clang -cc1 -cc1 -triple amd64-unknown-openbsd7.0 -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name SemaOverload.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model static -mframe-pointer=all -relaxed-aliasing -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/gnu/usr.bin/clang/libclangSema/obj -resource-dir /usr/local/lib/clang/13.0.0 -I /usr/src/gnu/usr.bin/clang/libclangSema/obj/../include/clang/Sema -I /usr/src/gnu/usr.bin/clang/libclangSema/../../../llvm/clang/include -I /usr/src/gnu/usr.bin/clang/libclangSema/../../../llvm/llvm/include -I /usr/src/gnu/usr.bin/clang/libclangSema/../include -I /usr/src/gnu/usr.bin/clang/libclangSema/obj -I /usr/src/gnu/usr.bin/clang/libclangSema/obj/../include -D NDEBUG -D __STDC_LIMIT_MACROS -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D LLVM_PREFIX="/usr" -internal-isystem /usr/include/c++/v1 -internal-isystem /usr/local/lib/clang/13.0.0/include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-comment -std=c++14 -fdeprecated-macro -fdebug-compilation-dir=/usr/src/gnu/usr.bin/clang/libclangSema/obj -ferror-limit 19 -fvisibility-inlines-hidden -fwrapv -stack-protector 2 -fno-rtti -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /home/ben/Projects/vmm/scan-build/2022-01-12-194120-40624-1 -x c++ /usr/src/gnu/usr.bin/clang/libclangSema/../../../llvm/clang/lib/Sema/SemaOverload.cpp
1 | |
2 | |
3 | |
4 | |
5 | |
6 | |
7 | |
8 | |
9 | |
10 | |
11 | |
12 | |
13 | #include "clang/AST/ASTContext.h" |
14 | #include "clang/AST/CXXInheritance.h" |
15 | #include "clang/AST/DeclObjC.h" |
16 | #include "clang/AST/DependenceFlags.h" |
17 | #include "clang/AST/Expr.h" |
18 | #include "clang/AST/ExprCXX.h" |
19 | #include "clang/AST/ExprObjC.h" |
20 | #include "clang/AST/TypeOrdering.h" |
21 | #include "clang/Basic/Diagnostic.h" |
22 | #include "clang/Basic/DiagnosticOptions.h" |
23 | #include "clang/Basic/PartialDiagnostic.h" |
24 | #include "clang/Basic/SourceManager.h" |
25 | #include "clang/Basic/TargetInfo.h" |
26 | #include "clang/Sema/Initialization.h" |
27 | #include "clang/Sema/Lookup.h" |
28 | #include "clang/Sema/Overload.h" |
29 | #include "clang/Sema/SemaInternal.h" |
30 | #include "clang/Sema/Template.h" |
31 | #include "clang/Sema/TemplateDeduction.h" |
32 | #include "llvm/ADT/DenseSet.h" |
33 | #include "llvm/ADT/Optional.h" |
34 | #include "llvm/ADT/STLExtras.h" |
35 | #include "llvm/ADT/SmallPtrSet.h" |
36 | #include "llvm/ADT/SmallString.h" |
37 | #include <algorithm> |
38 | #include <cstdlib> |
39 | |
40 | using namespace clang; |
41 | using namespace sema; |
42 | |
43 | using AllowedExplicit = Sema::AllowedExplicit; |
44 | |
45 | static bool functionHasPassObjectSizeParams(const FunctionDecl *FD) { |
46 | return llvm::any_of(FD->parameters(), [](const ParmVarDecl *P) { |
47 | return P->hasAttr<PassObjectSizeAttr>(); |
48 | }); |
49 | } |
50 | |
51 | |
52 | static ExprResult |
53 | CreateFunctionRefExpr(Sema &S, FunctionDecl *Fn, NamedDecl *FoundDecl, |
54 | const Expr *Base, bool HadMultipleCandidates, |
55 | SourceLocation Loc = SourceLocation(), |
56 | const DeclarationNameLoc &LocInfo = DeclarationNameLoc()){ |
57 | if (S.DiagnoseUseOfDecl(FoundDecl, Loc)) |
58 | return ExprError(); |
59 | |
60 | |
61 | |
62 | |
63 | |
64 | |
65 | if (FoundDecl != Fn && S.DiagnoseUseOfDecl(Fn, Loc)) |
66 | return ExprError(); |
67 | DeclRefExpr *DRE = new (S.Context) |
68 | DeclRefExpr(S.Context, Fn, false, Fn->getType(), VK_LValue, Loc, LocInfo); |
69 | if (HadMultipleCandidates) |
70 | DRE->setHadMultipleCandidates(true); |
71 | |
72 | S.MarkDeclRefReferenced(DRE, Base); |
73 | if (auto *FPT = DRE->getType()->getAs<FunctionProtoType>()) { |
74 | if (isUnresolvedExceptionSpec(FPT->getExceptionSpecType())) { |
75 | S.ResolveExceptionSpec(Loc, FPT); |
76 | DRE->setType(Fn->getType()); |
77 | } |
78 | } |
79 | return S.ImpCastExprToType(DRE, S.Context.getPointerType(DRE->getType()), |
80 | CK_FunctionToPointerDecay); |
81 | } |
82 | |
83 | static bool IsStandardConversion(Sema &S, Expr* From, QualType ToType, |
84 | bool InOverloadResolution, |
85 | StandardConversionSequence &SCS, |
86 | bool CStyle, |
87 | bool AllowObjCWritebackConversion); |
88 | |
89 | static bool IsTransparentUnionStandardConversion(Sema &S, Expr* From, |
90 | QualType &ToType, |
91 | bool InOverloadResolution, |
92 | StandardConversionSequence &SCS, |
93 | bool CStyle); |
94 | static OverloadingResult |
95 | IsUserDefinedConversion(Sema &S, Expr *From, QualType ToType, |
96 | UserDefinedConversionSequence& User, |
97 | OverloadCandidateSet& Conversions, |
98 | AllowedExplicit AllowExplicit, |
99 | bool AllowObjCConversionOnExplicit); |
100 | |
101 | static ImplicitConversionSequence::CompareKind |
102 | CompareStandardConversionSequences(Sema &S, SourceLocation Loc, |
103 | const StandardConversionSequence& SCS1, |
104 | const StandardConversionSequence& SCS2); |
105 | |
106 | static ImplicitConversionSequence::CompareKind |
107 | CompareQualificationConversions(Sema &S, |
108 | const StandardConversionSequence& SCS1, |
109 | const StandardConversionSequence& SCS2); |
110 | |
111 | static ImplicitConversionSequence::CompareKind |
112 | CompareDerivedToBaseConversions(Sema &S, SourceLocation Loc, |
113 | const StandardConversionSequence& SCS1, |
114 | const StandardConversionSequence& SCS2); |
115 | |
116 | |
117 | |
118 | ImplicitConversionRank clang::GetConversionRank(ImplicitConversionKind Kind) { |
119 | static const ImplicitConversionRank |
120 | Rank[(int)ICK_Num_Conversion_Kinds] = { |
121 | ICR_Exact_Match, |
122 | ICR_Exact_Match, |
123 | ICR_Exact_Match, |
124 | ICR_Exact_Match, |
125 | ICR_Exact_Match, |
126 | ICR_Exact_Match, |
127 | ICR_Promotion, |
128 | ICR_Promotion, |
129 | ICR_Promotion, |
130 | ICR_Conversion, |
131 | ICR_Conversion, |
132 | ICR_Conversion, |
133 | ICR_Conversion, |
134 | ICR_Conversion, |
135 | ICR_Conversion, |
136 | ICR_Conversion, |
137 | ICR_Conversion, |
138 | ICR_Conversion, |
139 | ICR_Conversion, |
140 | ICR_Conversion, |
141 | ICR_OCL_Scalar_Widening, |
142 | ICR_Complex_Real_Conversion, |
143 | ICR_Conversion, |
144 | ICR_Conversion, |
145 | ICR_Writeback_Conversion, |
146 | ICR_Exact_Match, |
147 | |
148 | |
149 | ICR_C_Conversion, |
150 | ICR_C_Conversion_Extension |
151 | }; |
152 | return Rank[(int)Kind]; |
153 | } |
154 | |
155 | |
156 | |
157 | static const char* GetImplicitConversionName(ImplicitConversionKind Kind) { |
158 | static const char* const Name[(int)ICK_Num_Conversion_Kinds] = { |
159 | "No conversion", |
160 | "Lvalue-to-rvalue", |
161 | "Array-to-pointer", |
162 | "Function-to-pointer", |
163 | "Function pointer conversion", |
164 | "Qualification", |
165 | "Integral promotion", |
166 | "Floating point promotion", |
167 | "Complex promotion", |
168 | "Integral conversion", |
169 | "Floating conversion", |
170 | "Complex conversion", |
171 | "Floating-integral conversion", |
172 | "Pointer conversion", |
173 | "Pointer-to-member conversion", |
174 | "Boolean conversion", |
175 | "Compatible-types conversion", |
176 | "Derived-to-base conversion", |
177 | "Vector conversion", |
178 | "SVE Vector conversion", |
179 | "Vector splat", |
180 | "Complex-real conversion", |
181 | "Block Pointer conversion", |
182 | "Transparent Union Conversion", |
183 | "Writeback conversion", |
184 | "OpenCL Zero Event Conversion", |
185 | "C specific type conversion", |
186 | "Incompatible pointer conversion" |
187 | }; |
188 | return Name[Kind]; |
189 | } |
190 | |
191 | |
192 | |
193 | void StandardConversionSequence::setAsIdentityConversion() { |
194 | First = ICK_Identity; |
195 | Second = ICK_Identity; |
196 | Third = ICK_Identity; |
197 | DeprecatedStringLiteralToCharPtr = false; |
198 | QualificationIncludesObjCLifetime = false; |
199 | ReferenceBinding = false; |
200 | DirectBinding = false; |
201 | IsLvalueReference = true; |
202 | BindsToFunctionLvalue = false; |
203 | BindsToRvalue = false; |
204 | BindsImplicitObjectArgumentWithoutRefQualifier = false; |
205 | ObjCLifetimeConversionBinding = false; |
206 | CopyConstructor = nullptr; |
207 | } |
208 | |
209 | |
210 | |
211 | |
212 | ImplicitConversionRank StandardConversionSequence::getRank() const { |
213 | ImplicitConversionRank Rank = ICR_Exact_Match; |
214 | if (GetConversionRank(First) > Rank) |
215 | Rank = GetConversionRank(First); |
216 | if (GetConversionRank(Second) > Rank) |
217 | Rank = GetConversionRank(Second); |
218 | if (GetConversionRank(Third) > Rank) |
219 | Rank = GetConversionRank(Third); |
220 | return Rank; |
221 | } |
222 | |
223 | |
224 | |
225 | |
226 | |
227 | bool StandardConversionSequence::isPointerConversionToBool() const { |
228 | |
229 | |
230 | |
231 | |
232 | if (getToType(1)->isBooleanType() && |
233 | (getFromType()->isPointerType() || |
234 | getFromType()->isMemberPointerType() || |
235 | getFromType()->isObjCObjectPointerType() || |
236 | getFromType()->isBlockPointerType() || |
237 | First == ICK_Array_To_Pointer || First == ICK_Function_To_Pointer)) |
238 | return true; |
239 | |
240 | return false; |
241 | } |
242 | |
243 | |
244 | |
245 | |
246 | |
247 | bool |
248 | StandardConversionSequence:: |
249 | isPointerConversionToVoidPointer(ASTContext& Context) const { |
250 | QualType FromType = getFromType(); |
251 | QualType ToType = getToType(1); |
252 | |
253 | |
254 | |
255 | |
256 | if (First == ICK_Array_To_Pointer) |
257 | FromType = Context.getArrayDecayedType(FromType); |
258 | |
259 | if (Second == ICK_Pointer_Conversion && FromType->isAnyPointerType()) |
260 | if (const PointerType* ToPtrType = ToType->getAs<PointerType>()) |
261 | return ToPtrType->getPointeeType()->isVoidType(); |
262 | |
263 | return false; |
264 | } |
265 | |
266 | |
267 | |
268 | static const Expr *IgnoreNarrowingConversion(ASTContext &Ctx, |
269 | const Expr *Converted) { |
270 | |
271 | |
272 | if (auto *EWC = dyn_cast<ExprWithCleanups>(Converted)) { |
273 | Expr *Inner = |
274 | const_cast<Expr *>(IgnoreNarrowingConversion(Ctx, EWC->getSubExpr())); |
275 | return ExprWithCleanups::Create(Ctx, Inner, EWC->cleanupsHaveSideEffects(), |
276 | EWC->getObjects()); |
277 | } |
278 | |
279 | while (auto *ICE = dyn_cast<ImplicitCastExpr>(Converted)) { |
280 | switch (ICE->getCastKind()) { |
281 | case CK_NoOp: |
282 | case CK_IntegralCast: |
283 | case CK_IntegralToBoolean: |
284 | case CK_IntegralToFloating: |
285 | case CK_BooleanToSignedIntegral: |
286 | case CK_FloatingToIntegral: |
287 | case CK_FloatingToBoolean: |
288 | case CK_FloatingCast: |
289 | Converted = ICE->getSubExpr(); |
290 | continue; |
291 | |
292 | default: |
293 | return Converted; |
294 | } |
295 | } |
296 | |
297 | return Converted; |
298 | } |
299 | |
300 | |
301 | |
302 | |
303 | |
304 | |
305 | |
306 | |
307 | |
308 | |
309 | |
310 | |
311 | NarrowingKind StandardConversionSequence::getNarrowingKind( |
312 | ASTContext &Ctx, const Expr *Converted, APValue &ConstantValue, |
313 | QualType &ConstantType, bool IgnoreFloatToIntegralConversion) const { |
314 | assert(Ctx.getLangOpts().CPlusPlus && "narrowing check outside C++"); |
315 | |
316 | |
317 | |
318 | QualType FromType = getToType(0); |
319 | QualType ToType = getToType(1); |
320 | |
321 | |
322 | |
323 | |
324 | if (auto *ET = ToType->getAs<EnumType>()) |
325 | ToType = ET->getDecl()->getIntegerType(); |
326 | |
327 | switch (Second) { |
328 | |
329 | case ICK_Boolean_Conversion: |
330 | if (FromType->isRealFloatingType()) |
331 | goto FloatingIntegralConversion; |
332 | if (FromType->isIntegralOrUnscopedEnumerationType()) |
333 | goto IntegralConversion; |
334 | |
335 | return NK_Type_Narrowing; |
336 | |
337 | |
338 | |
339 | |
340 | |
341 | |
342 | |
343 | case ICK_Floating_Integral: |
344 | FloatingIntegralConversion: |
345 | if (FromType->isRealFloatingType() && ToType->isIntegralType(Ctx)) { |
346 | return NK_Type_Narrowing; |
347 | } else if (FromType->isIntegralOrUnscopedEnumerationType() && |
348 | ToType->isRealFloatingType()) { |
349 | if (IgnoreFloatToIntegralConversion) |
350 | return NK_Not_Narrowing; |
351 | const Expr *Initializer = IgnoreNarrowingConversion(Ctx, Converted); |
352 | assert(Initializer && "Unknown conversion expression"); |
353 | |
354 | |
355 | if (Initializer->isValueDependent()) |
356 | return NK_Dependent_Narrowing; |
357 | |
358 | if (Optional<llvm::APSInt> IntConstantValue = |
359 | Initializer->getIntegerConstantExpr(Ctx)) { |
360 | |
361 | llvm::APFloat Result(Ctx.getFloatTypeSemantics(ToType)); |
362 | Result.convertFromAPInt(*IntConstantValue, IntConstantValue->isSigned(), |
363 | llvm::APFloat::rmNearestTiesToEven); |
364 | |
365 | llvm::APSInt ConvertedValue = *IntConstantValue; |
366 | bool ignored; |
367 | Result.convertToInteger(ConvertedValue, |
368 | llvm::APFloat::rmTowardZero, &ignored); |
369 | |
370 | if (*IntConstantValue != ConvertedValue) { |
371 | ConstantValue = APValue(*IntConstantValue); |
372 | ConstantType = Initializer->getType(); |
373 | return NK_Constant_Narrowing; |
374 | } |
375 | } else { |
376 | |
377 | return NK_Variable_Narrowing; |
378 | } |
379 | } |
380 | return NK_Not_Narrowing; |
381 | |
382 | |
383 | |
384 | |
385 | |
386 | case ICK_Floating_Conversion: |
387 | if (FromType->isRealFloatingType() && ToType->isRealFloatingType() && |
388 | Ctx.getFloatingTypeOrder(FromType, ToType) == 1) { |
389 | |
390 | const Expr *Initializer = IgnoreNarrowingConversion(Ctx, Converted); |
391 | |
392 | |
393 | if (Initializer->isValueDependent()) |
394 | return NK_Dependent_Narrowing; |
395 | |
396 | if (Initializer->isCXX11ConstantExpr(Ctx, &ConstantValue)) { |
397 | |
398 | assert(ConstantValue.isFloat()); |
399 | llvm::APFloat FloatVal = ConstantValue.getFloat(); |
400 | |
401 | bool ignored; |
402 | llvm::APFloat::opStatus ConvertStatus = FloatVal.convert( |
403 | Ctx.getFloatTypeSemantics(ToType), |
404 | llvm::APFloat::rmNearestTiesToEven, &ignored); |
405 | |
406 | |
407 | if (ConvertStatus & llvm::APFloat::opOverflow) { |
408 | ConstantType = Initializer->getType(); |
409 | return NK_Constant_Narrowing; |
410 | } |
411 | } else { |
412 | return NK_Variable_Narrowing; |
413 | } |
414 | } |
415 | return NK_Not_Narrowing; |
416 | |
417 | |
418 | |
419 | |
420 | |
421 | |
422 | case ICK_Integral_Conversion: |
423 | IntegralConversion: { |
424 | assert(FromType->isIntegralOrUnscopedEnumerationType()); |
425 | assert(ToType->isIntegralOrUnscopedEnumerationType()); |
426 | const bool FromSigned = FromType->isSignedIntegerOrEnumerationType(); |
427 | const unsigned FromWidth = Ctx.getIntWidth(FromType); |
428 | const bool ToSigned = ToType->isSignedIntegerOrEnumerationType(); |
429 | const unsigned ToWidth = Ctx.getIntWidth(ToType); |
430 | |
431 | if (FromWidth > ToWidth || |
432 | (FromWidth == ToWidth && FromSigned != ToSigned) || |
433 | (FromSigned && !ToSigned)) { |
434 | |
435 | const Expr *Initializer = IgnoreNarrowingConversion(Ctx, Converted); |
436 | |
437 | |
438 | if (Initializer->isValueDependent()) |
439 | return NK_Dependent_Narrowing; |
440 | |
441 | Optional<llvm::APSInt> OptInitializerValue; |
442 | if (!(OptInitializerValue = Initializer->getIntegerConstantExpr(Ctx))) { |
443 | |
444 | return NK_Variable_Narrowing; |
445 | } |
446 | llvm::APSInt &InitializerValue = *OptInitializerValue; |
447 | bool Narrowing = false; |
448 | if (FromWidth < ToWidth) { |
449 | |
450 | |
451 | if (InitializerValue.isSigned() && InitializerValue.isNegative()) |
452 | Narrowing = true; |
453 | } else { |
454 | |
455 | |
456 | InitializerValue = InitializerValue.extend( |
457 | InitializerValue.getBitWidth() + 1); |
458 | |
459 | llvm::APSInt ConvertedValue = InitializerValue; |
460 | ConvertedValue = ConvertedValue.trunc(ToWidth); |
461 | ConvertedValue.setIsSigned(ToSigned); |
462 | ConvertedValue = ConvertedValue.extend(InitializerValue.getBitWidth()); |
463 | ConvertedValue.setIsSigned(InitializerValue.isSigned()); |
464 | |
465 | if (ConvertedValue != InitializerValue) |
466 | Narrowing = true; |
467 | } |
468 | if (Narrowing) { |
469 | ConstantType = Initializer->getType(); |
470 | ConstantValue = APValue(InitializerValue); |
471 | return NK_Constant_Narrowing; |
472 | } |
473 | } |
474 | return NK_Not_Narrowing; |
475 | } |
476 | |
477 | default: |
478 | |
479 | return NK_Not_Narrowing; |
480 | } |
481 | } |
482 | |
483 | |
484 | |
485 | LLVM_DUMP_METHOD void StandardConversionSequence::dump() const { |
486 | raw_ostream &OS = llvm::errs(); |
487 | bool PrintedSomething = false; |
488 | if (First != ICK_Identity) { |
489 | OS << GetImplicitConversionName(First); |
490 | PrintedSomething = true; |
491 | } |
492 | |
493 | if (Second != ICK_Identity) { |
494 | if (PrintedSomething) { |
495 | OS << " -> "; |
496 | } |
497 | OS << GetImplicitConversionName(Second); |
498 | |
499 | if (CopyConstructor) { |
500 | OS << " (by copy constructor)"; |
501 | } else if (DirectBinding) { |
502 | OS << " (direct reference binding)"; |
503 | } else if (ReferenceBinding) { |
504 | OS << " (reference binding)"; |
505 | } |
506 | PrintedSomething = true; |
507 | } |
508 | |
509 | if (Third != ICK_Identity) { |
510 | if (PrintedSomething) { |
511 | OS << " -> "; |
512 | } |
513 | OS << GetImplicitConversionName(Third); |
514 | PrintedSomething = true; |
515 | } |
516 | |
517 | if (!PrintedSomething) { |
518 | OS << "No conversions required"; |
519 | } |
520 | } |
521 | |
522 | |
523 | |
524 | void UserDefinedConversionSequence::dump() const { |
525 | raw_ostream &OS = llvm::errs(); |
526 | if (Before.First || Before.Second || Before.Third) { |
527 | Before.dump(); |
528 | OS << " -> "; |
529 | } |
530 | if (ConversionFunction) |
531 | OS << '\'' << *ConversionFunction << '\''; |
532 | else |
533 | OS << "aggregate initialization"; |
534 | if (After.First || After.Second || After.Third) { |
535 | OS << " -> "; |
536 | After.dump(); |
537 | } |
538 | } |
539 | |
540 | |
541 | |
542 | void ImplicitConversionSequence::dump() const { |
543 | raw_ostream &OS = llvm::errs(); |
544 | if (isStdInitializerListElement()) |
545 | OS << "Worst std::initializer_list element conversion: "; |
546 | switch (ConversionKind) { |
547 | case StandardConversion: |
548 | OS << "Standard conversion: "; |
549 | Standard.dump(); |
550 | break; |
551 | case UserDefinedConversion: |
552 | OS << "User-defined conversion: "; |
553 | UserDefined.dump(); |
554 | break; |
555 | case EllipsisConversion: |
556 | OS << "Ellipsis conversion"; |
557 | break; |
558 | case AmbiguousConversion: |
559 | OS << "Ambiguous conversion"; |
560 | break; |
561 | case BadConversion: |
562 | OS << "Bad conversion"; |
563 | break; |
564 | } |
565 | |
566 | OS << "\n"; |
567 | } |
568 | |
569 | void AmbiguousConversionSequence::construct() { |
570 | new (&conversions()) ConversionSet(); |
571 | } |
572 | |
573 | void AmbiguousConversionSequence::destruct() { |
574 | conversions().~ConversionSet(); |
575 | } |
576 | |
577 | void |
578 | AmbiguousConversionSequence::copyFrom(const AmbiguousConversionSequence &O) { |
579 | FromTypePtr = O.FromTypePtr; |
580 | ToTypePtr = O.ToTypePtr; |
581 | new (&conversions()) ConversionSet(O.conversions()); |
582 | } |
583 | |
584 | namespace { |
585 | |
586 | |
587 | struct DFIArguments { |
588 | TemplateArgument FirstArg; |
589 | TemplateArgument SecondArg; |
590 | }; |
591 | |
592 | |
593 | struct DFIParamWithArguments : DFIArguments { |
594 | TemplateParameter Param; |
595 | }; |
596 | |
597 | |
598 | struct DFIDeducedMismatchArgs : DFIArguments { |
599 | TemplateArgumentList *TemplateArgs; |
600 | unsigned CallArgIndex; |
601 | }; |
602 | |
603 | |
604 | struct CNSInfo { |
605 | TemplateArgumentList *TemplateArgs; |
606 | ConstraintSatisfaction Satisfaction; |
607 | }; |
608 | } |
609 | |
610 | |
611 | |
612 | DeductionFailureInfo |
613 | clang::MakeDeductionFailureInfo(ASTContext &Context, |
614 | Sema::TemplateDeductionResult TDK, |
615 | TemplateDeductionInfo &Info) { |
616 | DeductionFailureInfo Result; |
617 | Result.Result = static_cast<unsigned>(TDK); |
618 | Result.HasDiagnostic = false; |
619 | switch (TDK) { |
620 | case Sema::TDK_Invalid: |
621 | case Sema::TDK_InstantiationDepth: |
622 | case Sema::TDK_TooManyArguments: |
623 | case Sema::TDK_TooFewArguments: |
624 | case Sema::TDK_MiscellaneousDeductionFailure: |
625 | case Sema::TDK_CUDATargetMismatch: |
626 | Result.Data = nullptr; |
627 | break; |
628 | |
629 | case Sema::TDK_Incomplete: |
630 | case Sema::TDK_InvalidExplicitArguments: |
631 | Result.Data = Info.Param.getOpaqueValue(); |
632 | break; |
633 | |
634 | case Sema::TDK_DeducedMismatch: |
635 | case Sema::TDK_DeducedMismatchNested: { |
636 | |
637 | auto *Saved = new (Context) DFIDeducedMismatchArgs; |
638 | Saved->FirstArg = Info.FirstArg; |
639 | Saved->SecondArg = Info.SecondArg; |
640 | Saved->TemplateArgs = Info.take(); |
641 | Saved->CallArgIndex = Info.CallArgIndex; |
642 | Result.Data = Saved; |
643 | break; |
644 | } |
645 | |
646 | case Sema::TDK_NonDeducedMismatch: { |
647 | |
648 | DFIArguments *Saved = new (Context) DFIArguments; |
649 | Saved->FirstArg = Info.FirstArg; |
650 | Saved->SecondArg = Info.SecondArg; |
651 | Result.Data = Saved; |
652 | break; |
653 | } |
654 | |
655 | case Sema::TDK_IncompletePack: |
656 | |
657 | case Sema::TDK_Inconsistent: |
658 | case Sema::TDK_Underqualified: { |
659 | |
660 | DFIParamWithArguments *Saved = new (Context) DFIParamWithArguments; |
661 | Saved->Param = Info.Param; |
662 | Saved->FirstArg = Info.FirstArg; |
663 | Saved->SecondArg = Info.SecondArg; |
664 | Result.Data = Saved; |
665 | break; |
666 | } |
667 | |
668 | case Sema::TDK_SubstitutionFailure: |
669 | Result.Data = Info.take(); |
670 | if (Info.hasSFINAEDiagnostic()) { |
671 | PartialDiagnosticAt *Diag = new (Result.Diagnostic) PartialDiagnosticAt( |
672 | SourceLocation(), PartialDiagnostic::NullDiagnostic()); |
673 | Info.takeSFINAEDiagnostic(*Diag); |
674 | Result.HasDiagnostic = true; |
675 | } |
676 | break; |
677 | |
678 | case Sema::TDK_ConstraintsNotSatisfied: { |
679 | CNSInfo *Saved = new (Context) CNSInfo; |
680 | Saved->TemplateArgs = Info.take(); |
681 | Saved->Satisfaction = Info.AssociatedConstraintsSatisfaction; |
682 | Result.Data = Saved; |
683 | break; |
684 | } |
685 | |
686 | case Sema::TDK_Success: |
687 | case Sema::TDK_NonDependentConversionFailure: |
688 | llvm_unreachable("not a deduction failure"); |
689 | } |
690 | |
691 | return Result; |
692 | } |
693 | |
694 | void DeductionFailureInfo::Destroy() { |
695 | switch (static_cast<Sema::TemplateDeductionResult>(Result)) { |
696 | case Sema::TDK_Success: |
697 | case Sema::TDK_Invalid: |
698 | case Sema::TDK_InstantiationDepth: |
699 | case Sema::TDK_Incomplete: |
700 | case Sema::TDK_TooManyArguments: |
701 | case Sema::TDK_TooFewArguments: |
702 | case Sema::TDK_InvalidExplicitArguments: |
703 | case Sema::TDK_CUDATargetMismatch: |
704 | case Sema::TDK_NonDependentConversionFailure: |
705 | break; |
706 | |
707 | case Sema::TDK_IncompletePack: |
708 | case Sema::TDK_Inconsistent: |
709 | case Sema::TDK_Underqualified: |
710 | case Sema::TDK_DeducedMismatch: |
711 | case Sema::TDK_DeducedMismatchNested: |
712 | case Sema::TDK_NonDeducedMismatch: |
713 | |
714 | Data = nullptr; |
715 | break; |
716 | |
717 | case Sema::TDK_SubstitutionFailure: |
718 | |
719 | Data = nullptr; |
720 | if (PartialDiagnosticAt *Diag = getSFINAEDiagnostic()) { |
721 | Diag->~PartialDiagnosticAt(); |
722 | HasDiagnostic = false; |
723 | } |
724 | break; |
725 | |
726 | case Sema::TDK_ConstraintsNotSatisfied: |
727 | |
728 | Data = nullptr; |
729 | if (PartialDiagnosticAt *Diag = getSFINAEDiagnostic()) { |
730 | Diag->~PartialDiagnosticAt(); |
731 | HasDiagnostic = false; |
732 | } |
733 | break; |
734 | |
735 | |
736 | case Sema::TDK_MiscellaneousDeductionFailure: |
737 | break; |
738 | } |
739 | } |
740 | |
741 | PartialDiagnosticAt *DeductionFailureInfo::getSFINAEDiagnostic() { |
742 | if (HasDiagnostic) |
743 | return static_cast<PartialDiagnosticAt*>(static_cast<void*>(Diagnostic)); |
744 | return nullptr; |
745 | } |
746 | |
747 | TemplateParameter DeductionFailureInfo::getTemplateParameter() { |
748 | switch (static_cast<Sema::TemplateDeductionResult>(Result)) { |
749 | case Sema::TDK_Success: |
750 | case Sema::TDK_Invalid: |
751 | case Sema::TDK_InstantiationDepth: |
752 | case Sema::TDK_TooManyArguments: |
753 | case Sema::TDK_TooFewArguments: |
754 | case Sema::TDK_SubstitutionFailure: |
755 | case Sema::TDK_DeducedMismatch: |
756 | case Sema::TDK_DeducedMismatchNested: |
757 | case Sema::TDK_NonDeducedMismatch: |
758 | case Sema::TDK_CUDATargetMismatch: |
759 | case Sema::TDK_NonDependentConversionFailure: |
760 | case Sema::TDK_ConstraintsNotSatisfied: |
761 | return TemplateParameter(); |
762 | |
763 | case Sema::TDK_Incomplete: |
764 | case Sema::TDK_InvalidExplicitArguments: |
765 | return TemplateParameter::getFromOpaqueValue(Data); |
766 | |
767 | case Sema::TDK_IncompletePack: |
768 | case Sema::TDK_Inconsistent: |
769 | case Sema::TDK_Underqualified: |
770 | return static_cast<DFIParamWithArguments*>(Data)->Param; |
771 | |
772 | |
773 | case Sema::TDK_MiscellaneousDeductionFailure: |
774 | break; |
775 | } |
776 | |
777 | return TemplateParameter(); |
778 | } |
779 | |
780 | TemplateArgumentList *DeductionFailureInfo::getTemplateArgumentList() { |
781 | switch (static_cast<Sema::TemplateDeductionResult>(Result)) { |
782 | case Sema::TDK_Success: |
783 | case Sema::TDK_Invalid: |
784 | case Sema::TDK_InstantiationDepth: |
785 | case Sema::TDK_TooManyArguments: |
786 | case Sema::TDK_TooFewArguments: |
787 | case Sema::TDK_Incomplete: |
788 | case Sema::TDK_IncompletePack: |
789 | case Sema::TDK_InvalidExplicitArguments: |
790 | case Sema::TDK_Inconsistent: |
791 | case Sema::TDK_Underqualified: |
792 | case Sema::TDK_NonDeducedMismatch: |
793 | case Sema::TDK_CUDATargetMismatch: |
794 | case Sema::TDK_NonDependentConversionFailure: |
795 | return nullptr; |
796 | |
797 | case Sema::TDK_DeducedMismatch: |
798 | case Sema::TDK_DeducedMismatchNested: |
799 | return static_cast<DFIDeducedMismatchArgs*>(Data)->TemplateArgs; |
800 | |
801 | case Sema::TDK_SubstitutionFailure: |
802 | return static_cast<TemplateArgumentList*>(Data); |
803 | |
804 | case Sema::TDK_ConstraintsNotSatisfied: |
805 | return static_cast<CNSInfo*>(Data)->TemplateArgs; |
806 | |
807 | |
808 | case Sema::TDK_MiscellaneousDeductionFailure: |
809 | break; |
810 | } |
811 | |
812 | return nullptr; |
813 | } |
814 | |
815 | const TemplateArgument *DeductionFailureInfo::getFirstArg() { |
816 | switch (static_cast<Sema::TemplateDeductionResult>(Result)) { |
817 | case Sema::TDK_Success: |
818 | case Sema::TDK_Invalid: |
819 | case Sema::TDK_InstantiationDepth: |
820 | case Sema::TDK_Incomplete: |
821 | case Sema::TDK_TooManyArguments: |
822 | case Sema::TDK_TooFewArguments: |
823 | case Sema::TDK_InvalidExplicitArguments: |
824 | case Sema::TDK_SubstitutionFailure: |
825 | case Sema::TDK_CUDATargetMismatch: |
826 | case Sema::TDK_NonDependentConversionFailure: |
827 | case Sema::TDK_ConstraintsNotSatisfied: |
828 | return nullptr; |
829 | |
830 | case Sema::TDK_IncompletePack: |
831 | case Sema::TDK_Inconsistent: |
832 | case Sema::TDK_Underqualified: |
833 | case Sema::TDK_DeducedMismatch: |
834 | case Sema::TDK_DeducedMismatchNested: |
835 | case Sema::TDK_NonDeducedMismatch: |
836 | return &static_cast<DFIArguments*>(Data)->FirstArg; |
837 | |
838 | |
839 | case Sema::TDK_MiscellaneousDeductionFailure: |
840 | break; |
841 | } |
842 | |
843 | return nullptr; |
844 | } |
845 | |
846 | const TemplateArgument *DeductionFailureInfo::getSecondArg() { |
847 | switch (static_cast<Sema::TemplateDeductionResult>(Result)) { |
848 | case Sema::TDK_Success: |
849 | case Sema::TDK_Invalid: |
850 | case Sema::TDK_InstantiationDepth: |
851 | case Sema::TDK_Incomplete: |
852 | case Sema::TDK_IncompletePack: |
853 | case Sema::TDK_TooManyArguments: |
854 | case Sema::TDK_TooFewArguments: |
855 | case Sema::TDK_InvalidExplicitArguments: |
856 | case Sema::TDK_SubstitutionFailure: |
857 | case Sema::TDK_CUDATargetMismatch: |
858 | case Sema::TDK_NonDependentConversionFailure: |
859 | case Sema::TDK_ConstraintsNotSatisfied: |
860 | return nullptr; |
861 | |
862 | case Sema::TDK_Inconsistent: |
863 | case Sema::TDK_Underqualified: |
864 | case Sema::TDK_DeducedMismatch: |
865 | case Sema::TDK_DeducedMismatchNested: |
866 | case Sema::TDK_NonDeducedMismatch: |
867 | return &static_cast<DFIArguments*>(Data)->SecondArg; |
868 | |
869 | |
870 | case Sema::TDK_MiscellaneousDeductionFailure: |
871 | break; |
872 | } |
873 | |
874 | return nullptr; |
875 | } |
876 | |
877 | llvm::Optional<unsigned> DeductionFailureInfo::getCallArgIndex() { |
878 | switch (static_cast<Sema::TemplateDeductionResult>(Result)) { |
879 | case Sema::TDK_DeducedMismatch: |
880 | case Sema::TDK_DeducedMismatchNested: |
881 | return static_cast<DFIDeducedMismatchArgs*>(Data)->CallArgIndex; |
882 | |
883 | default: |
884 | return llvm::None; |
885 | } |
886 | } |
887 | |
888 | bool OverloadCandidateSet::OperatorRewriteInfo::shouldAddReversed( |
889 | OverloadedOperatorKind Op) { |
890 | if (!AllowRewrittenCandidates) |
891 | return false; |
892 | return Op == OO_EqualEqual || Op == OO_Spaceship; |
893 | } |
894 | |
895 | bool OverloadCandidateSet::OperatorRewriteInfo::shouldAddReversed( |
896 | ASTContext &Ctx, const FunctionDecl *FD) { |
897 | if (!shouldAddReversed(FD->getDeclName().getCXXOverloadedOperator())) |
898 | return false; |
899 | |
900 | |
901 | return FD->getNumParams() != 2 || |
902 | !Ctx.hasSameUnqualifiedType(FD->getParamDecl(0)->getType(), |
903 | FD->getParamDecl(1)->getType()) || |
904 | FD->hasAttr<EnableIfAttr>(); |
905 | } |
906 | |
907 | void OverloadCandidateSet::destroyCandidates() { |
908 | for (iterator i = begin(), e = end(); i != e; ++i) { |
909 | for (auto &C : i->Conversions) |
910 | C.~ImplicitConversionSequence(); |
911 | if (!i->Viable && i->FailureKind == ovl_fail_bad_deduction) |
912 | i->DeductionFailure.Destroy(); |
913 | } |
914 | } |
915 | |
916 | void OverloadCandidateSet::clear(CandidateSetKind CSK) { |
917 | destroyCandidates(); |
918 | SlabAllocator.Reset(); |
919 | NumInlineBytesUsed = 0; |
920 | Candidates.clear(); |
921 | Functions.clear(); |
922 | Kind = CSK; |
923 | } |
924 | |
925 | namespace { |
926 | class UnbridgedCastsSet { |
927 | struct Entry { |
928 | Expr **Addr; |
929 | Expr *Saved; |
930 | }; |
931 | SmallVector<Entry, 2> Entries; |
932 | |
933 | public: |
934 | void save(Sema &S, Expr *&E) { |
935 | assert(E->hasPlaceholderType(BuiltinType::ARCUnbridgedCast)); |
936 | Entry entry = { &E, E }; |
937 | Entries.push_back(entry); |
938 | E = S.stripARCUnbridgedCast(E); |
939 | } |
940 | |
941 | void restore() { |
942 | for (SmallVectorImpl<Entry>::iterator |
943 | i = Entries.begin(), e = Entries.end(); i != e; ++i) |
944 | *i->Addr = i->Saved; |
945 | } |
946 | }; |
947 | } |
948 | |
949 | |
950 | |
951 | |
952 | |
953 | |
954 | |
955 | |
956 | static bool |
957 | checkPlaceholderForOverload(Sema &S, Expr *&E, |
958 | UnbridgedCastsSet *unbridgedCasts = nullptr) { |
959 | if (const BuiltinType *placeholder = E->getType()->getAsPlaceholderType()) { |
960 | |
961 | |
962 | if (placeholder->getKind() == BuiltinType::Overload) return false; |
963 | |
964 | |
965 | |
966 | if (placeholder->getKind() == BuiltinType::ARCUnbridgedCast && |
967 | unbridgedCasts) { |
968 | unbridgedCasts->save(S, E); |
969 | return false; |
970 | } |
971 | |
972 | |
973 | ExprResult result = S.CheckPlaceholderExpr(E); |
974 | if (result.isInvalid()) |
975 | return true; |
976 | |
977 | E = result.get(); |
978 | return false; |
979 | } |
980 | |
981 | |
982 | return false; |
983 | } |
984 | |
985 | |
986 | |
987 | static bool checkArgPlaceholdersForOverload(Sema &S, |
988 | MultiExprArg Args, |
989 | UnbridgedCastsSet &unbridged) { |
990 | for (unsigned i = 0, e = Args.size(); i != e; ++i) |
991 | if (checkPlaceholderForOverload(S, Args[i], &unbridged)) |
992 | return true; |
993 | |
994 | return false; |
995 | } |
996 | |
997 | |
998 | |
999 | |
1000 | |
1001 | |
1002 | |
1003 | |
1004 | |
1005 | |
1006 | |
1007 | |
1008 | |
1009 | |
1010 | |
1011 | |
1012 | |
1013 | |
1014 | |
1015 | |
1016 | |
1017 | |
1018 | |
1019 | |
1020 | |
1021 | |
1022 | |
1023 | |
1024 | |
1025 | |
1026 | |
1027 | |
1028 | |
1029 | |
1030 | Sema::OverloadKind |
1031 | Sema::CheckOverload(Scope *S, FunctionDecl *New, const LookupResult &Old, |
1032 | NamedDecl *&Match, bool NewIsUsingDecl) { |
1033 | for (LookupResult::iterator I = Old.begin(), E = Old.end(); |
1034 | I != E; ++I) { |
1035 | NamedDecl *OldD = *I; |
1036 | |
1037 | bool OldIsUsingDecl = false; |
1038 | if (isa<UsingShadowDecl>(OldD)) { |
1039 | OldIsUsingDecl = true; |
1040 | |
1041 | |
1042 | |
1043 | if (NewIsUsingDecl) continue; |
1044 | |
1045 | OldD = cast<UsingShadowDecl>(OldD)->getTargetDecl(); |
1046 | } |
1047 | |
1048 | |
1049 | |
1050 | if ((OldIsUsingDecl || NewIsUsingDecl) && !isVisible(*I)) |
1051 | continue; |
1052 | |
1053 | |
1054 | |
1055 | |
1056 | |
1057 | |
1058 | bool UseMemberUsingDeclRules = |
1059 | (OldIsUsingDecl || NewIsUsingDecl) && CurContext->isRecord() && |
1060 | !New->getFriendObjectKind(); |
1061 | |
1062 | if (FunctionDecl *OldF = OldD->getAsFunction()) { |
1063 | if (!IsOverload(New, OldF, UseMemberUsingDeclRules)) { |
1064 | if (UseMemberUsingDeclRules && OldIsUsingDecl) { |
1065 | HideUsingShadowDecl(S, cast<UsingShadowDecl>(*I)); |
1066 | continue; |
1067 | } |
1068 | |
1069 | if (!isa<FunctionTemplateDecl>(OldD) && |
1070 | !shouldLinkPossiblyHiddenDecl(*I, New)) |
1071 | continue; |
1072 | |
1073 | Match = *I; |
1074 | return Ovl_Match; |
1075 | } |
1076 | |
1077 | |
1078 | |
1079 | if (!getASTContext().canBuiltinBeRedeclared(OldF)) { |
1080 | Match = *I; |
1081 | return Ovl_NonFunction; |
1082 | } |
1083 | } else if (isa<UsingDecl>(OldD) || isa<UsingPackDecl>(OldD)) { |
1084 | |
1085 | |
1086 | assert(Old.getLookupKind() == LookupUsingDeclName); |
1087 | } else if (isa<TagDecl>(OldD)) { |
1088 | |
1089 | } else if (auto *UUD = dyn_cast<UnresolvedUsingValueDecl>(OldD)) { |
1090 | |
1091 | |
1092 | |
1093 | |
1094 | |
1095 | |
1096 | if (UUD->getQualifier()->isDependent() && !UUD->isCXXClassMember()) { |
1097 | Match = *I; |
1098 | return Ovl_NonFunction; |
1099 | } |
1100 | } else { |
1101 | |
1102 | |
1103 | |
1104 | Match = *I; |
1105 | return Ovl_NonFunction; |
1106 | } |
1107 | } |
1108 | |
1109 | |
1110 | |
1111 | |
1112 | |
1113 | |
1114 | |
1115 | |
1116 | |
1117 | |
1118 | |
1119 | |
1120 | |
1121 | |
1122 | |
1123 | |
1124 | if (New->getFriendObjectKind() && New->getQualifier() && |
1125 | !New->getDescribedFunctionTemplate() && |
1126 | !New->getDependentSpecializationInfo() && |
1127 | !New->getType()->isDependentType()) { |
1128 | LookupResult TemplateSpecResult(LookupResult::Temporary, Old); |
1129 | TemplateSpecResult.addAllDecls(Old); |
1130 | if (CheckFunctionTemplateSpecialization(New, nullptr, TemplateSpecResult, |
1131 | true)) { |
1132 | New->setInvalidDecl(); |
1133 | return Ovl_Overload; |
1134 | } |
1135 | |
1136 | Match = TemplateSpecResult.getAsSingle<FunctionDecl>(); |
1137 | return Ovl_Match; |
1138 | } |
1139 | |
1140 | return Ovl_Overload; |
1141 | } |
1142 | |
1143 | bool Sema::IsOverload(FunctionDecl *New, FunctionDecl *Old, |
1144 | bool UseMemberUsingDeclRules, bool ConsiderCudaAttrs, |
1145 | bool ConsiderRequiresClauses) { |
1146 | |
1147 | if (New->isMain()) |
1148 | return false; |
1149 | |
1150 | |
1151 | if (New->isMSVCRTEntryPoint()) |
1152 | return false; |
1153 | |
1154 | FunctionTemplateDecl *OldTemplate = Old->getDescribedFunctionTemplate(); |
1155 | FunctionTemplateDecl *NewTemplate = New->getDescribedFunctionTemplate(); |
1156 | |
1157 | |
1158 | |
1159 | |
1160 | if ((OldTemplate == nullptr) != (NewTemplate == nullptr)) |
1161 | return true; |
1162 | |
1163 | |
1164 | QualType OldQType = Context.getCanonicalType(Old->getType()); |
1165 | QualType NewQType = Context.getCanonicalType(New->getType()); |
1166 | |
1167 | |
1168 | |
1169 | |
1170 | |
1171 | |
1172 | |
1173 | if (isa<FunctionNoProtoType>(OldQType.getTypePtr()) || |
1174 | isa<FunctionNoProtoType>(NewQType.getTypePtr())) |
1175 | return false; |
1176 | |
1177 | const FunctionProtoType *OldType = cast<FunctionProtoType>(OldQType); |
1178 | const FunctionProtoType *NewType = cast<FunctionProtoType>(NewQType); |
1179 | |
1180 | |
1181 | |
1182 | |
1183 | if (OldQType != NewQType && |
1184 | (OldType->getNumParams() != NewType->getNumParams() || |
1185 | OldType->isVariadic() != NewType->isVariadic() || |
1186 | !FunctionParamTypesAreEqual(OldType, NewType))) |
1187 | return true; |
1188 | |
1189 | |
1190 | |
1191 | |
1192 | |
1193 | |
1194 | |
1195 | |
1196 | |
1197 | |
1198 | |
1199 | |
1200 | |
1201 | if (!UseMemberUsingDeclRules && NewTemplate && |
1202 | (!TemplateParameterListsAreEqual(NewTemplate->getTemplateParameters(), |
1203 | OldTemplate->getTemplateParameters(), |
1204 | false, TPL_TemplateMatch) || |
1205 | !Context.hasSameType(Old->getDeclaredReturnType(), |
1206 | New->getDeclaredReturnType()))) |
1207 | return true; |
1208 | |
1209 | |
1210 | |
1211 | |
1212 | |
1213 | |
1214 | |
1215 | |
1216 | |
1217 | CXXMethodDecl *OldMethod = dyn_cast<CXXMethodDecl>(Old); |
1218 | CXXMethodDecl *NewMethod = dyn_cast<CXXMethodDecl>(New); |
1219 | if (OldMethod && NewMethod && |
1220 | !OldMethod->isStatic() && !NewMethod->isStatic()) { |
1221 | if (OldMethod->getRefQualifier() != NewMethod->getRefQualifier()) { |
1222 | if (!UseMemberUsingDeclRules && |
1223 | (OldMethod->getRefQualifier() == RQ_None || |
1224 | NewMethod->getRefQualifier() == RQ_None)) { |
1225 | |
1226 | |
1227 | |
1228 | |
1229 | |
1230 | |
1231 | Diag(NewMethod->getLocation(), diag::err_ref_qualifier_overload) |
1232 | << NewMethod->getRefQualifier() << OldMethod->getRefQualifier(); |
1233 | Diag(OldMethod->getLocation(), diag::note_previous_declaration); |
1234 | } |
1235 | return true; |
1236 | } |
1237 | |
1238 | |
1239 | |
1240 | |
1241 | |
1242 | auto OldQuals = OldMethod->getMethodQualifiers(); |
1243 | auto NewQuals = NewMethod->getMethodQualifiers(); |
1244 | if (!getLangOpts().CPlusPlus14 && NewMethod->isConstexpr() && |
1245 | !isa<CXXConstructorDecl>(NewMethod)) |
1246 | NewQuals.addConst(); |
1247 | |
1248 | OldQuals.removeRestrict(); |
1249 | NewQuals.removeRestrict(); |
1250 | if (OldQuals != NewQuals) |
1251 | return true; |
1252 | } |
1253 | |
1254 | |
1255 | |
1256 | |
1257 | |
1258 | if (functionHasPassObjectSizeParams(New) != |
1259 | functionHasPassObjectSizeParams(Old)) |
1260 | return true; |
1261 | |
1262 | |
1263 | for (specific_attr_iterator<EnableIfAttr> |
1264 | NewI = New->specific_attr_begin<EnableIfAttr>(), |
1265 | NewE = New->specific_attr_end<EnableIfAttr>(), |
1266 | OldI = Old->specific_attr_begin<EnableIfAttr>(), |
1267 | OldE = Old->specific_attr_end<EnableIfAttr>(); |
1268 | NewI != NewE || OldI != OldE; ++NewI, ++OldI) { |
1269 | if (NewI == NewE || OldI == OldE) |
1270 | return true; |
1271 | llvm::FoldingSetNodeID NewID, OldID; |
1272 | NewI->getCond()->Profile(NewID, Context, true); |
1273 | OldI->getCond()->Profile(OldID, Context, true); |
1274 | if (NewID != OldID) |
1275 | return true; |
1276 | } |
1277 | |
1278 | if (getLangOpts().CUDA && ConsiderCudaAttrs) { |
1279 | |
1280 | |
1281 | if (!isa<CXXDestructorDecl>(New)) { |
1282 | CUDAFunctionTarget NewTarget = IdentifyCUDATarget(New), |
1283 | OldTarget = IdentifyCUDATarget(Old); |
1284 | if (NewTarget != CFT_InvalidTarget) { |
1285 | assert((OldTarget != CFT_InvalidTarget) && |
1286 | "Unexpected invalid target."); |
1287 | |
1288 | |
1289 | |
1290 | if (NewTarget != OldTarget) |
1291 | return true; |
1292 | } |
1293 | } |
1294 | } |
1295 | |
1296 | if (ConsiderRequiresClauses) { |
1297 | Expr *NewRC = New->getTrailingRequiresClause(), |
1298 | *OldRC = Old->getTrailingRequiresClause(); |
1299 | if ((NewRC != nullptr) != (OldRC != nullptr)) |
1300 | |
1301 | return true; |
1302 | |
1303 | if (NewRC) { |
1304 | llvm::FoldingSetNodeID NewID, OldID; |
1305 | NewRC->Profile(NewID, Context, true); |
1306 | OldRC->Profile(OldID, Context, true); |
1307 | if (NewID != OldID) |
1308 | |
1309 | return true; |
1310 | } |
1311 | } |
1312 | |
1313 | |
1314 | return false; |
1315 | } |
1316 | |
1317 | |
1318 | |
1319 | |
1320 | |
1321 | static ImplicitConversionSequence |
1322 | TryUserDefinedConversion(Sema &S, Expr *From, QualType ToType, |
1323 | bool SuppressUserConversions, |
1324 | AllowedExplicit AllowExplicit, |
1325 | bool InOverloadResolution, |
1326 | bool CStyle, |
1327 | bool AllowObjCWritebackConversion, |
1328 | bool AllowObjCConversionOnExplicit) { |
1329 | ImplicitConversionSequence ICS; |
1330 | |
1331 | if (SuppressUserConversions) { |
1332 | |
1333 | |
1334 | ICS.setBad(BadConversionSequence::no_conversion, From, ToType); |
1335 | return ICS; |
1336 | } |
1337 | |
1338 | |
1339 | OverloadCandidateSet Conversions(From->getExprLoc(), |
1340 | OverloadCandidateSet::CSK_Normal); |
1341 | switch (IsUserDefinedConversion(S, From, ToType, ICS.UserDefined, |
1342 | Conversions, AllowExplicit, |
1343 | AllowObjCConversionOnExplicit)) { |
1344 | case OR_Success: |
1345 | case OR_Deleted: |
1346 | ICS.setUserDefined(); |
1347 | |
1348 | |
1349 | |
1350 | |
1351 | |
1352 | |
1353 | |
1354 | if (CXXConstructorDecl *Constructor |
1355 | = dyn_cast<CXXConstructorDecl>(ICS.UserDefined.ConversionFunction)) { |
1356 | QualType FromCanon |
1357 | = S.Context.getCanonicalType(From->getType().getUnqualifiedType()); |
1358 | QualType ToCanon |
1359 | = S.Context.getCanonicalType(ToType).getUnqualifiedType(); |
1360 | if (Constructor->isCopyConstructor() && |
1361 | (FromCanon == ToCanon || |
1362 | S.IsDerivedFrom(From->getBeginLoc(), FromCanon, ToCanon))) { |
1363 | |
1364 | |
1365 | DeclAccessPair Found = ICS.UserDefined.FoundConversionFunction; |
1366 | ICS.setStandard(); |
1367 | ICS.Standard.setAsIdentityConversion(); |
1368 | ICS.Standard.setFromType(From->getType()); |
1369 | ICS.Standard.setAllToTypes(ToType); |
1370 | ICS.Standard.CopyConstructor = Constructor; |
1371 | ICS.Standard.FoundCopyConstructor = Found; |
1372 | if (ToCanon != FromCanon) |
1373 | ICS.Standard.Second = ICK_Derived_To_Base; |
1374 | } |
1375 | } |
1376 | break; |
1377 | |
1378 | case OR_Ambiguous: |
1379 | ICS.setAmbiguous(); |
1380 | ICS.Ambiguous.setFromType(From->getType()); |
1381 | ICS.Ambiguous.setToType(ToType); |
1382 | for (OverloadCandidateSet::iterator Cand = Conversions.begin(); |
1383 | Cand != Conversions.end(); ++Cand) |
1384 | if (Cand->Best) |
1385 | ICS.Ambiguous.addConversion(Cand->FoundDecl, Cand->Function); |
1386 | break; |
1387 | |
1388 | |
1389 | case OR_No_Viable_Function: |
1390 | ICS.setBad(BadConversionSequence::no_conversion, From, ToType); |
1391 | break; |
1392 | } |
1393 | |
1394 | return ICS; |
1395 | } |
1396 | |
1397 | |
1398 | |
1399 | |
1400 | |
1401 | |
1402 | |
1403 | |
1404 | |
1405 | |
1406 | |
1407 | |
1408 | |
1409 | |
1410 | |
1411 | |
1412 | |
1413 | |
1414 | |
1415 | |
1416 | |
1417 | |
1418 | |
1419 | |
1420 | |
1421 | |
1422 | |
1423 | |
1424 | static ImplicitConversionSequence |
1425 | TryImplicitConversion(Sema &S, Expr *From, QualType ToType, |
1426 | bool SuppressUserConversions, |
1427 | AllowedExplicit AllowExplicit, |
1428 | bool InOverloadResolution, |
1429 | bool CStyle, |
1430 | bool AllowObjCWritebackConversion, |
1431 | bool AllowObjCConversionOnExplicit) { |
1432 | ImplicitConversionSequence ICS; |
1433 | if (IsStandardConversion(S, From, ToType, InOverloadResolution, |
1434 | ICS.Standard, CStyle, AllowObjCWritebackConversion)){ |
1435 | ICS.setStandard(); |
1436 | return ICS; |
1437 | } |
1438 | |
1439 | if (!S.getLangOpts().CPlusPlus) { |
1440 | ICS.setBad(BadConversionSequence::no_conversion, From, ToType); |
1441 | return ICS; |
1442 | } |
1443 | |
1444 | |
1445 | |
1446 | |
1447 | |
1448 | |
1449 | |
1450 | |
1451 | QualType FromType = From->getType(); |
1452 | if (ToType->getAs<RecordType>() && FromType->getAs<RecordType>() && |
1453 | (S.Context.hasSameUnqualifiedType(FromType, ToType) || |
1454 | S.IsDerivedFrom(From->getBeginLoc(), FromType, ToType))) { |
1455 | ICS.setStandard(); |
1456 | ICS.Standard.setAsIdentityConversion(); |
1457 | ICS.Standard.setFromType(FromType); |
1458 | ICS.Standard.setAllToTypes(ToType); |
1459 | |
1460 | |
1461 | |
1462 | |
1463 | |
1464 | ICS.Standard.CopyConstructor = nullptr; |
1465 | |
1466 | |
1467 | if (!S.Context.hasSameUnqualifiedType(FromType, ToType)) |
1468 | ICS.Standard.Second = ICK_Derived_To_Base; |
1469 | |
1470 | return ICS; |
1471 | } |
1472 | |
1473 | return TryUserDefinedConversion(S, From, ToType, SuppressUserConversions, |
1474 | AllowExplicit, InOverloadResolution, CStyle, |
1475 | AllowObjCWritebackConversion, |
1476 | AllowObjCConversionOnExplicit); |
1477 | } |
1478 | |
1479 | ImplicitConversionSequence |
1480 | Sema::TryImplicitConversion(Expr *From, QualType ToType, |
1481 | bool SuppressUserConversions, |
1482 | AllowedExplicit AllowExplicit, |
1483 | bool InOverloadResolution, |
1484 | bool CStyle, |
1485 | bool AllowObjCWritebackConversion) { |
1486 | return ::TryImplicitConversion(*this, From, ToType, SuppressUserConversions, |
1487 | AllowExplicit, InOverloadResolution, CStyle, |
1488 | AllowObjCWritebackConversion, |
1489 | false); |
1490 | } |
1491 | |
1492 | |
1493 | |
1494 | |
1495 | |
1496 | |
1497 | ExprResult Sema::PerformImplicitConversion(Expr *From, QualType ToType, |
1498 | AssignmentAction Action, |
1499 | bool AllowExplicit) { |
1500 | if (checkPlaceholderForOverload(*this, From)) |
1501 | return ExprError(); |
1502 | |
1503 | |
1504 | bool AllowObjCWritebackConversion |
1505 | = getLangOpts().ObjCAutoRefCount && |
1506 | (Action == AA_Passing || Action == AA_Sending); |
1507 | if (getLangOpts().ObjC) |
1508 | CheckObjCBridgeRelatedConversions(From->getBeginLoc(), ToType, |
1509 | From->getType(), From); |
1510 | ImplicitConversionSequence ICS = ::TryImplicitConversion( |
1511 | *this, From, ToType, |
1512 | false, |
1513 | AllowExplicit ? AllowedExplicit::All : AllowedExplicit::None, |
1514 | false, |
1515 | false, AllowObjCWritebackConversion, |
1516 | false); |
1517 | return PerformImplicitConversion(From, ToType, ICS, Action); |
1518 | } |
1519 | |
1520 | |
1521 | |
1522 | |
1523 | bool Sema::IsFunctionConversion(QualType FromType, QualType ToType, |
1524 | QualType &ResultTy) { |
1525 | if (Context.hasSameUnqualifiedType(FromType, ToType)) |
1526 | return false; |
1527 | |
1528 | |
1529 | |
1530 | |
1531 | |
1532 | |
1533 | |
1534 | |
1535 | CanQualType CanTo = Context.getCanonicalType(ToType); |
1536 | CanQualType CanFrom = Context.getCanonicalType(FromType); |
1537 | Type::TypeClass TyClass = CanTo->getTypeClass(); |
1538 | if (TyClass != CanFrom->getTypeClass()) return false; |
1539 | if (TyClass != Type::FunctionProto && TyClass != Type::FunctionNoProto) { |
1540 | if (TyClass == Type::Pointer) { |
1541 | CanTo = CanTo.castAs<PointerType>()->getPointeeType(); |
1542 | CanFrom = CanFrom.castAs<PointerType>()->getPointeeType(); |
1543 | } else if (TyClass == Type::BlockPointer) { |
1544 | CanTo = CanTo.castAs<BlockPointerType>()->getPointeeType(); |
1545 | CanFrom = CanFrom.castAs<BlockPointerType>()->getPointeeType(); |
1546 | } else if (TyClass == Type::MemberPointer) { |
1547 | auto ToMPT = CanTo.castAs<MemberPointerType>(); |
1548 | auto FromMPT = CanFrom.castAs<MemberPointerType>(); |
1549 | |
1550 | if (ToMPT->getClass() != FromMPT->getClass()) |
1551 | return false; |
1552 | CanTo = ToMPT->getPointeeType(); |
1553 | CanFrom = FromMPT->getPointeeType(); |
1554 | } else { |
1555 | return false; |
1556 | } |
1557 | |
1558 | TyClass = CanTo->getTypeClass(); |
1559 | if (TyClass != CanFrom->getTypeClass()) return false; |
1560 | if (TyClass != Type::FunctionProto && TyClass != Type::FunctionNoProto) |
1561 | return false; |
1562 | } |
1563 | |
1564 | const auto *FromFn = cast<FunctionType>(CanFrom); |
1565 | FunctionType::ExtInfo FromEInfo = FromFn->getExtInfo(); |
1566 | |
1567 | const auto *ToFn = cast<FunctionType>(CanTo); |
1568 | FunctionType::ExtInfo ToEInfo = ToFn->getExtInfo(); |
1569 | |
1570 | bool Changed = false; |
1571 | |
1572 | |
1573 | if (FromEInfo.getNoReturn() && !ToEInfo.getNoReturn()) { |
1574 | FromFn = Context.adjustFunctionType(FromFn, FromEInfo.withNoReturn(false)); |
1575 | Changed = true; |
1576 | } |
1577 | |
1578 | |
1579 | if (const auto *FromFPT = dyn_cast<FunctionProtoType>(FromFn)) { |
1580 | const auto *ToFPT = cast<FunctionProtoType>(ToFn); |
1581 | if (FromFPT->isNothrow() && !ToFPT->isNothrow()) { |
1582 | FromFn = cast<FunctionType>( |
1583 | Context.getFunctionTypeWithExceptionSpec(QualType(FromFPT, 0), |
1584 | EST_None) |
1585 | .getTypePtr()); |
1586 | Changed = true; |
1587 | } |
1588 | |
1589 | |
1590 | |
1591 | |
1592 | SmallVector<FunctionProtoType::ExtParameterInfo, 4> NewParamInfos; |
1593 | bool CanUseToFPT, CanUseFromFPT; |
1594 | if (Context.mergeExtParameterInfo(ToFPT, FromFPT, CanUseToFPT, |
1595 | CanUseFromFPT, NewParamInfos) && |
1596 | CanUseToFPT && !CanUseFromFPT) { |
1597 | FunctionProtoType::ExtProtoInfo ExtInfo = FromFPT->getExtProtoInfo(); |
1598 | ExtInfo.ExtParameterInfos = |
1599 | NewParamInfos.empty() ? nullptr : NewParamInfos.data(); |
1600 | QualType QT = Context.getFunctionType(FromFPT->getReturnType(), |
1601 | FromFPT->getParamTypes(), ExtInfo); |
1602 | FromFn = QT->getAs<FunctionType>(); |
1603 | Changed = true; |
1604 | } |
1605 | } |
1606 | |
1607 | if (!Changed) |
1608 | return false; |
1609 | |
1610 | assert(QualType(FromFn, 0).isCanonical()); |
1611 | if (QualType(FromFn, 0) != CanTo) return false; |
1612 | |
1613 | ResultTy = ToType; |
1614 | return true; |
1615 | } |
1616 | |
1617 | |
1618 | |
1619 | |
1620 | |
1621 | |
1622 | static bool IsVectorConversion(Sema &S, QualType FromType, |
1623 | QualType ToType, ImplicitConversionKind &ICK) { |
1624 | |
1625 | |
1626 | if (!ToType->isVectorType() && !FromType->isVectorType()) |
1627 | return false; |
1628 | |
1629 | |
1630 | if (S.Context.hasSameUnqualifiedType(FromType, ToType)) |
1631 | return false; |
1632 | |
1633 | |
1634 | if (ToType->isExtVectorType()) { |
1635 | |
1636 | |
1637 | if (FromType->isExtVectorType()) |
1638 | return false; |
1639 | |
1640 | |
1641 | if (FromType->isArithmeticType()) { |
1642 | ICK = ICK_Vector_Splat; |
1643 | return true; |
1644 | } |
1645 | } |
1646 | |
1647 | if (ToType->isSizelessBuiltinType() || FromType->isSizelessBuiltinType()) |
1648 | if (S.Context.areCompatibleSveTypes(FromType, ToType) || |
1649 | S.Context.areLaxCompatibleSveTypes(FromType, ToType)) { |
1650 | ICK = ICK_SVE_Vector_Conversion; |
1651 | return true; |
1652 | } |
1653 | |
1654 | |
1655 | |
1656 | |
1657 | |
1658 | |
1659 | |
1660 | |
1661 | if (ToType->isVectorType() && FromType->isVectorType()) { |
1662 | if (S.Context.areCompatibleVectorTypes(FromType, ToType) || |
1663 | (S.isLaxVectorConversion(FromType, ToType) && |
1664 | !ToType->hasAttr(attr::ArmMveStrictPolymorphism))) { |
1665 | ICK = ICK_Vector_Conversion; |
1666 | return true; |
1667 | } |
1668 | } |
1669 | |
1670 | return false; |
1671 | } |
1672 | |
1673 | static bool tryAtomicConversion(Sema &S, Expr *From, QualType ToType, |
1674 | bool InOverloadResolution, |
1675 | StandardConversionSequence &SCS, |
1676 | bool CStyle); |
1677 | |
1678 | |
1679 | |
1680 | |
1681 | |
1682 | |
1683 | |
1684 | |
1685 | |
1686 | static bool IsStandardConversion(Sema &S, Expr* From, QualType ToType, |
1687 | bool InOverloadResolution, |
1688 | StandardConversionSequence &SCS, |
1689 | bool CStyle, |
1690 | bool AllowObjCWritebackConversion) { |
1691 | QualType FromType = From->getType(); |
1692 | |
1693 | |
1694 | SCS.setAsIdentityConversion(); |
1695 | SCS.IncompatibleObjC = false; |
1696 | SCS.setFromType(FromType); |
1697 | SCS.CopyConstructor = nullptr; |
1698 | |
1699 | |
1700 | |
1701 | if (S.getLangOpts().CPlusPlus && |
1702 | (FromType->isRecordType() || ToType->isRecordType())) |
1703 | return false; |
1704 | |
1705 | |
1706 | |
1707 | |
1708 | |
1709 | if (FromType == S.Context.OverloadTy) { |
1710 | DeclAccessPair AccessPair; |
1711 | if (FunctionDecl *Fn |
1712 | = S.ResolveAddressOfOverloadedFunction(From, ToType, false, |
1713 | AccessPair)) { |
1714 | |
1715 | |
1716 | FromType = Fn->getType(); |
1717 | SCS.setFromType(FromType); |
1718 | |
1719 | |
1720 | |
1721 | if (!S.Context.hasSameUnqualifiedType( |
1722 | S.ExtractUnqualifiedFunctionType(ToType), FromType)) { |
1723 | QualType resultTy; |
1724 | |
1725 | if (!S.IsFunctionConversion(FromType, |
1726 | S.ExtractUnqualifiedFunctionType(ToType), resultTy)) |
1727 | |
1728 | if (!ToType->isBooleanType()) |
1729 | return false; |
1730 | } |
1731 | |
1732 | |
1733 | |
1734 | |
1735 | |
1736 | CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(Fn); |
1737 | if (Method && !Method->isStatic()) { |
1738 | assert(isa<UnaryOperator>(From->IgnoreParens()) && |
1739 | "Non-unary operator on non-static member address"); |
1740 | assert(cast<UnaryOperator>(From->IgnoreParens())->getOpcode() |
1741 | == UO_AddrOf && |
1742 | "Non-address-of operator on non-static member address"); |
1743 | const Type *ClassType |
1744 | = S.Context.getTypeDeclType(Method->getParent()).getTypePtr(); |
1745 | FromType = S.Context.getMemberPointerType(FromType, ClassType); |
1746 | } else if (isa<UnaryOperator>(From->IgnoreParens())) { |
1747 | assert(cast<UnaryOperator>(From->IgnoreParens())->getOpcode() == |
1748 | UO_AddrOf && |
1749 | "Non-address-of operator for overloaded function expression"); |
1750 | FromType = S.Context.getPointerType(FromType); |
1751 | } |
1752 | |
1753 | |
1754 | |
1755 | |
1756 | assert(S.Context.hasSameType( |
1757 | FromType, |
1758 | S.FixOverloadedFunctionReference(From, AccessPair, Fn)->getType())); |
1759 | } else { |
1760 | return false; |
1761 | } |
1762 | } |
1763 | |
1764 | |
1765 | |
1766 | bool argIsLValue = From->isGLValue(); |
1767 | if (argIsLValue && |
1768 | !FromType->isFunctionType() && !FromType->isArrayType() && |
1769 | S.Context.getCanonicalType(FromType) != S.Context.OverloadTy) { |
1770 | SCS.First = ICK_Lvalue_To_Rvalue; |
1771 | |
1772 | |
1773 | |
1774 | |
1775 | if (const AtomicType *Atomic = FromType->getAs<AtomicType>()) |
1776 | FromType = Atomic->getValueType(); |
1777 | |
1778 | |
1779 | |
1780 | |
1781 | |
1782 | FromType = FromType.getUnqualifiedType(); |
1783 | } else if (FromType->isArrayType()) { |
1784 | |
1785 | SCS.First = ICK_Array_To_Pointer; |
1786 | |
1787 | |
1788 | |
1789 | |
1790 | FromType = S.Context.getArrayDecayedType(FromType); |
1791 | |
1792 | if (S.IsStringLiteralToNonConstPointerConversion(From, ToType)) { |
1793 | |
1794 | SCS.DeprecatedStringLiteralToCharPtr = true; |
1795 | |
1796 | |
1797 | |
1798 | |
1799 | |
1800 | SCS.Second = ICK_Identity; |
1801 | SCS.Third = ICK_Qualification; |
1802 | SCS.QualificationIncludesObjCLifetime = false; |
1803 | SCS.setAllToTypes(FromType); |
1804 | return true; |
1805 | } |
1806 | } else if (FromType->isFunctionType() && argIsLValue) { |
1807 | |
1808 | SCS.First = ICK_Function_To_Pointer; |
1809 | |
1810 | if (auto *DRE = dyn_cast<DeclRefExpr>(From->IgnoreParenCasts())) |
1811 | if (auto *FD = dyn_cast<FunctionDecl>(DRE->getDecl())) |
1812 | if (!S.checkAddressOfFunctionIsAvailable(FD)) |
1813 | return false; |
1814 | |
1815 | |
1816 | |
1817 | |
1818 | FromType = S.Context.getPointerType(FromType); |
1819 | } else { |
1820 | |
1821 | SCS.First = ICK_Identity; |
1822 | } |
1823 | SCS.setToType(0, FromType); |
1824 | |
1825 | |
1826 | |
1827 | |
1828 | |
1829 | |
1830 | |
1831 | bool IncompatibleObjC = false; |
1832 | ImplicitConversionKind SecondICK = ICK_Identity; |
1833 | if (S.Context.hasSameUnqualifiedType(FromType, ToType)) { |
1834 | |
1835 | |
1836 | SCS.Second = ICK_Identity; |
1837 | } else if (S.IsIntegralPromotion(From, FromType, ToType)) { |
1838 | |
1839 | SCS.Second = ICK_Integral_Promotion; |
1840 | FromType = ToType.getUnqualifiedType(); |
1841 | } else if (S.IsFloatingPointPromotion(FromType, ToType)) { |
1842 | |
1843 | SCS.Second = ICK_Floating_Promotion; |
1844 | FromType = ToType.getUnqualifiedType(); |
1845 | } else if (S.IsComplexPromotion(FromType, ToType)) { |
1846 | |
1847 | SCS.Second = ICK_Complex_Promotion; |
1848 | FromType = ToType.getUnqualifiedType(); |
1849 | } else if (ToType->isBooleanType() && |
1850 | (FromType->isArithmeticType() || |
1851 | FromType->isAnyPointerType() || |
1852 | FromType->isBlockPointerType() || |
1853 | FromType->isMemberPointerType())) { |
1854 | |
1855 | SCS.Second = ICK_Boolean_Conversion; |
1856 | FromType = S.Context.BoolTy; |
1857 | } else if (FromType->isIntegralOrUnscopedEnumerationType() && |
1858 | ToType->isIntegralType(S.Context)) { |
1859 | |
1860 | SCS.Second = ICK_Integral_Conversion; |
1861 | FromType = ToType.getUnqualifiedType(); |
1862 | } else if (FromType->isAnyComplexType() && ToType->isAnyComplexType()) { |
1863 | |
1864 | SCS.Second = ICK_Complex_Conversion; |
1865 | FromType = ToType.getUnqualifiedType(); |
1866 | } else if ((FromType->isAnyComplexType() && ToType->isArithmeticType()) || |
1867 | (ToType->isAnyComplexType() && FromType->isArithmeticType())) { |
1868 | |
1869 | SCS.Second = ICK_Complex_Real; |
1870 | FromType = ToType.getUnqualifiedType(); |
1871 | } else if (FromType->isRealFloatingType() && ToType->isRealFloatingType()) { |
1872 | |
1873 | |
1874 | |
1875 | |
1876 | |
1877 | if (FromType == S.Context.BFloat16Ty || ToType == S.Context.BFloat16Ty) |
1878 | return false; |
1879 | if (&S.Context.getFloatTypeSemantics(FromType) != |
1880 | &S.Context.getFloatTypeSemantics(ToType)) { |
1881 | bool Float128AndLongDouble = ((FromType == S.Context.Float128Ty && |
1882 | ToType == S.Context.LongDoubleTy) || |
1883 | (FromType == S.Context.LongDoubleTy && |
1884 | ToType == S.Context.Float128Ty)); |
1885 | if (Float128AndLongDouble && |
1886 | (&S.Context.getFloatTypeSemantics(S.Context.LongDoubleTy) == |
1887 | &llvm::APFloat::PPCDoubleDouble())) |
1888 | return false; |
1889 | } |
1890 | |
1891 | SCS.Second = ICK_Floating_Conversion; |
1892 | FromType = ToType.getUnqualifiedType(); |
1893 | } else if ((FromType->isRealFloatingType() && |
1894 | ToType->isIntegralType(S.Context)) || |
1895 | (FromType->isIntegralOrUnscopedEnumerationType() && |
1896 | ToType->isRealFloatingType())) { |
1897 | |
1898 | if (FromType->isBFloat16Type() || ToType->isBFloat16Type()) |
1899 | return false; |
1900 | |
1901 | |
1902 | SCS.Second = ICK_Floating_Integral; |
1903 | FromType = ToType.getUnqualifiedType(); |
1904 | } else if (S.IsBlockPointerConversion(FromType, ToType, FromType)) { |
1905 | SCS.Second = ICK_Block_Pointer_Conversion; |
1906 | } else if (AllowObjCWritebackConversion && |
1907 | S.isObjCWritebackConversion(FromType, ToType, FromType)) { |
1908 | SCS.Second = ICK_Writeback_Conversion; |
1909 | } else if (S.IsPointerConversion(From, FromType, ToType, InOverloadResolution, |
1910 | FromType, IncompatibleObjC)) { |
1911 | |
1912 | SCS.Second = ICK_Pointer_Conversion; |
1913 | SCS.IncompatibleObjC = IncompatibleObjC; |
1914 | FromType = FromType.getUnqualifiedType(); |
1915 | } else if (S.IsMemberPointerConversion(From, FromType, ToType, |
1916 | InOverloadResolution, FromType)) { |
1917 | |
1918 | SCS.Second = ICK_Pointer_Member; |
1919 | } else if (IsVectorConversion(S, FromType, ToType, SecondICK)) { |
1920 | SCS.Second = SecondICK; |
1921 | FromType = ToType.getUnqualifiedType(); |
1922 | } else if (!S.getLangOpts().CPlusPlus && |
1923 | S.Context.typesAreCompatible(ToType, FromType)) { |
1924 | |
1925 | SCS.Second = ICK_Compatible_Conversion; |
1926 | FromType = ToType.getUnqualifiedType(); |
1927 | } else if (IsTransparentUnionStandardConversion(S, From, ToType, |
1928 | InOverloadResolution, |
1929 | SCS, CStyle)) { |
1930 | SCS.Second = ICK_TransparentUnionConversion; |
1931 | FromType = ToType; |
1932 | } else if (tryAtomicConversion(S, From, ToType, InOverloadResolution, SCS, |
1933 | CStyle)) { |
1934 | |
1935 | |
1936 | return true; |
1937 | } else if (ToType->isEventT() && |
1938 | From->isIntegerConstantExpr(S.getASTContext()) && |
1939 | From->EvaluateKnownConstInt(S.getASTContext()) == 0) { |
1940 | SCS.Second = ICK_Zero_Event_Conversion; |
1941 | FromType = ToType; |
1942 | } else if (ToType->isQueueT() && |
1943 | From->isIntegerConstantExpr(S.getASTContext()) && |
1944 | (From->EvaluateKnownConstInt(S.getASTContext()) == 0)) { |
1945 | SCS.Second = ICK_Zero_Queue_Conversion; |
1946 | FromType = ToType; |
1947 | } else if (ToType->isSamplerT() && |
1948 | From->isIntegerConstantExpr(S.getASTContext())) { |
1949 | SCS.Second = ICK_Compatible_Conversion; |
1950 | FromType = ToType; |
1951 | } else { |
1952 | |
1953 | SCS.Second = ICK_Identity; |
1954 | } |
1955 | SCS.setToType(1, FromType); |
1956 | |
1957 | |
1958 | |
1959 | bool ObjCLifetimeConversion; |
1960 | if (S.IsFunctionConversion(FromType, ToType, FromType)) { |
1961 | |
1962 | |
1963 | SCS.Third = ICK_Function_Conversion; |
1964 | } else if (S.IsQualificationConversion(FromType, ToType, CStyle, |
1965 | ObjCLifetimeConversion)) { |
1966 | SCS.Third = ICK_Qualification; |
1967 | SCS.QualificationIncludesObjCLifetime = ObjCLifetimeConversion; |
1968 | FromType = ToType; |
1969 | } else { |
1970 | |
1971 | SCS.Third = ICK_Identity; |
1972 | } |
1973 | |
1974 | |
1975 | |
1976 | |
1977 | |
1978 | QualType CanonFrom = S.Context.getCanonicalType(FromType); |
1979 | QualType CanonTo = S.Context.getCanonicalType(ToType); |
1980 | if (CanonFrom.getLocalUnqualifiedType() |
1981 | == CanonTo.getLocalUnqualifiedType() && |
1982 | CanonFrom.getLocalQualifiers() != CanonTo.getLocalQualifiers()) { |
1983 | FromType = ToType; |
1984 | CanonFrom = CanonTo; |
1985 | } |
1986 | |
1987 | SCS.setToType(2, FromType); |
1988 | |
1989 | if (CanonFrom == CanonTo) |
1990 | return true; |
1991 | |
1992 | |
1993 | |
1994 | if (S.getLangOpts().CPlusPlus || !InOverloadResolution) |
1995 | return false; |
1996 | |
1997 | ExprResult ER = ExprResult{From}; |
1998 | Sema::AssignConvertType Conv = |
1999 | S.CheckSingleAssignmentConstraints(ToType, ER, |
2000 | false, |
2001 | false, |
2002 | false); |
2003 | ImplicitConversionKind SecondConv; |
2004 | switch (Conv) { |
2005 | case Sema::Compatible: |
2006 | SecondConv = ICK_C_Only_Conversion; |
2007 | break; |
2008 | |
2009 | |
2010 | |
2011 | case Sema::CompatiblePointerDiscardsQualifiers: |
2012 | case Sema::IncompatiblePointer: |
2013 | case Sema::IncompatiblePointerSign: |
2014 | SecondConv = ICK_Incompatible_Pointer_Conversion; |
2015 | break; |
2016 | default: |
2017 | return false; |
2018 | } |
2019 | |
2020 | |
2021 | |
2022 | |
2023 | SCS.Second = SecondConv; |
2024 | SCS.setToType(1, ToType); |
2025 | |
2026 | |
2027 | |
2028 | |
2029 | |
2030 | SCS.Third = ICK_Identity; |
2031 | SCS.setToType(2, ToType); |
2032 | return true; |
2033 | } |
2034 | |
2035 | static bool |
2036 | IsTransparentUnionStandardConversion(Sema &S, Expr* From, |
2037 | QualType &ToType, |
2038 | bool InOverloadResolution, |
2039 | StandardConversionSequence &SCS, |
2040 | bool CStyle) { |
2041 | |
2042 | const RecordType *UT = ToType->getAsUnionType(); |
2043 | if (!UT || !UT->getDecl()->hasAttr<TransparentUnionAttr>()) |
2044 | return false; |
2045 | |
2046 | RecordDecl *UD = UT->getDecl(); |
2047 | |
2048 | for (const auto *it : UD->fields()) { |
2049 | if (IsStandardConversion(S, From, it->getType(), InOverloadResolution, SCS, |
2050 | CStyle, false)) { |
2051 | ToType = it->getType(); |
2052 | return true; |
2053 | } |
2054 | } |
2055 | return false; |
2056 | } |
2057 | |
2058 | |
2059 | |
2060 | |
2061 | |
2062 | bool Sema::IsIntegralPromotion(Expr *From, QualType FromType, QualType ToType) { |
2063 | const BuiltinType *To = ToType->getAs<BuiltinType>(); |
2064 | |
2065 | if (!To) { |
2066 | return false; |
2067 | } |
2068 | |
2069 | |
2070 | |
2071 | |
2072 | |
2073 | |
2074 | if (FromType->isPromotableIntegerType() && !FromType->isBooleanType() && |
2075 | !FromType->isEnumeralType()) { |
2076 | if ( |
2077 | (FromType->isSignedIntegerType() || |
2078 | |
2079 | |
2080 | Context.getTypeSize(FromType) < Context.getTypeSize(ToType))) { |
2081 | return To->getKind() == BuiltinType::Int; |
2082 | } |
2083 | |
2084 | return To->getKind() == BuiltinType::UInt; |
2085 | } |
2086 | |
2087 | |
2088 | |
2089 | |
2090 | |
2091 | |
2092 | |
2093 | |
2094 | |
2095 | |
2096 | |
2097 | |
2098 | |
2099 | |
2100 | |
2101 | |
2102 | |
2103 | |
2104 | |
2105 | if (const EnumType *FromEnumType = FromType->getAs<EnumType>()) { |
2106 | |
2107 | |
2108 | if (FromEnumType->getDecl()->isScoped()) |
2109 | return false; |
2110 | |
2111 | |
2112 | |
2113 | |
2114 | |
2115 | if (FromEnumType->getDecl()->isFixed()) { |
2116 | QualType Underlying = FromEnumType->getDecl()->getIntegerType(); |
2117 | return Context.hasSameUnqualifiedType(Underlying, ToType) || |
2118 | IsIntegralPromotion(nullptr, Underlying, ToType); |
2119 | } |
2120 | |
2121 | |
2122 | if (ToType->isIntegerType() && |
2123 | isCompleteType(From->getBeginLoc(), FromType)) |
2124 | return Context.hasSameUnqualifiedType( |
2125 | ToType, FromEnumType->getDecl()->getPromotionType()); |
2126 | |
2127 | |
2128 | |
2129 | |
2130 | |
2131 | |
2132 | if (getLangOpts().CPlusPlus) |
2133 | return false; |
2134 | } |
2135 | |
2136 | |
2137 | |
2138 | |
2139 | |
2140 | |
2141 | |
2142 | |
2143 | |
2144 | |
2145 | if (FromType->isAnyCharacterType() && !FromType->isCharType() && |
2146 | ToType->isIntegerType()) { |
2147 | |
2148 | |
2149 | bool FromIsSigned = FromType->isSignedIntegerType(); |
2150 | uint64_t FromSize = Context.getTypeSize(FromType); |
2151 | |
2152 | |
2153 | |
2154 | QualType PromoteTypes[6] = { |
2155 | Context.IntTy, Context.UnsignedIntTy, |
2156 | Context.LongTy, Context.UnsignedLongTy , |
2157 | Context.LongLongTy, Context.UnsignedLongLongTy |
2158 | }; |
2159 | for (int Idx = 0; Idx < 6; ++Idx) { |
2160 | uint64_t ToSize = Context.getTypeSize(PromoteTypes[Idx]); |
2161 | if (FromSize < ToSize || |
2162 | (FromSize == ToSize && |
2163 | FromIsSigned == PromoteTypes[Idx]->isSignedIntegerType())) { |
2164 | |
2165 | |
2166 | |
2167 | return Context.hasSameUnqualifiedType(ToType, PromoteTypes[Idx]); |
2168 | } |
2169 | } |
2170 | } |
2171 | |
2172 | |
2173 | |
2174 | |
2175 | |
2176 | |
2177 | |
2178 | |
2179 | |
2180 | |
2181 | |
2182 | |
2183 | |
2184 | |
2185 | |
2186 | if (From) { |
2187 | if (FieldDecl *MemberDecl = From->getSourceBitField()) { |
2188 | Optional<llvm::APSInt> BitWidth; |
2189 | if (FromType->isIntegralType(Context) && |
2190 | (BitWidth = |
2191 | MemberDecl->getBitWidth()->getIntegerConstantExpr(Context))) { |
2192 | llvm::APSInt ToSize(BitWidth->getBitWidth(), BitWidth->isUnsigned()); |
2193 | ToSize = Context.getTypeSize(ToType); |
2194 | |
2195 | |
2196 | if (*BitWidth < ToSize || |
2197 | (FromType->isSignedIntegerType() && *BitWidth <= ToSize)) { |
2198 | return To->getKind() == BuiltinType::Int; |
2199 | } |
2200 | |
2201 | |
2202 | |
2203 | if (FromType->isUnsignedIntegerType() && *BitWidth <= ToSize) { |
2204 | return To->getKind() == BuiltinType::UInt; |
2205 | } |
2206 | |
2207 | return false; |
2208 | } |
2209 | } |
2210 | } |
2211 | |
2212 | |
2213 | |
2214 | if (FromType->isBooleanType() && To->getKind() == BuiltinType::Int) { |
2215 | return true; |
2216 | } |
2217 | |
2218 | return false; |
2219 | } |
2220 | |
2221 | |
2222 | |
2223 | |
2224 | bool Sema::IsFloatingPointPromotion(QualType FromType, QualType ToType) { |
2225 | if (const BuiltinType *FromBuiltin = FromType->getAs<BuiltinType>()) |
2226 | if (const BuiltinType *ToBuiltin = ToType->getAs<BuiltinType>()) { |
2227 | |
2228 | |
2229 | if (FromBuiltin->getKind() == BuiltinType::Float && |
2230 | ToBuiltin->getKind() == BuiltinType::Double) |
2231 | return true; |
2232 | |
2233 | |
2234 | |
2235 | |
2236 | if (!getLangOpts().CPlusPlus && |
2237 | (FromBuiltin->getKind() == BuiltinType::Float || |
2238 | FromBuiltin->getKind() == BuiltinType::Double) && |
2239 | (ToBuiltin->getKind() == BuiltinType::LongDouble || |
2240 | ToBuiltin->getKind() == BuiltinType::Float128)) |
2241 | return true; |
2242 | |
2243 | |
2244 | if (!getLangOpts().NativeHalfType && |
2245 | FromBuiltin->getKind() == BuiltinType::Half && |
2246 | ToBuiltin->getKind() == BuiltinType::Float) |
2247 | return true; |
2248 | } |
2249 | |
2250 | return false; |
2251 | } |
2252 | |
2253 | |
2254 | |
2255 | |
2256 | |
2257 | |
2258 | bool Sema::IsComplexPromotion(QualType FromType, QualType ToType) { |
2259 | const ComplexType *FromComplex = FromType->getAs<ComplexType>(); |
2260 | if (!FromComplex) |
2261 | return false; |
2262 | |
2263 | const ComplexType *ToComplex = ToType->getAs<ComplexType>(); |
2264 | if (!ToComplex) |
2265 | return false; |
2266 | |
2267 | return IsFloatingPointPromotion(FromComplex->getElementType(), |
2268 | ToComplex->getElementType()) || |
2269 | IsIntegralPromotion(nullptr, FromComplex->getElementType(), |
2270 | ToComplex->getElementType()); |
2271 | } |
2272 | |
2273 | |
2274 | |
2275 | |
2276 | |
2277 | |
2278 | |
2279 | static QualType |
2280 | BuildSimilarlyQualifiedPointerType(const Type *FromPtr, |
2281 | QualType ToPointee, QualType ToType, |
2282 | ASTContext &Context, |
2283 | bool StripObjCLifetime = false) { |
2284 | assert((FromPtr->getTypeClass() == Type::Pointer || |
2285 | FromPtr->getTypeClass() == Type::ObjCObjectPointer) && |
2286 | "Invalid similarly-qualified pointer type"); |
2287 | |
2288 | |
2289 | if (ToType->isObjCIdType() || ToType->isObjCQualifiedIdType()) |
2290 | return ToType.getUnqualifiedType(); |
2291 | |
2292 | QualType CanonFromPointee |
2293 | = Context.getCanonicalType(FromPtr->getPointeeType()); |
2294 | QualType CanonToPointee = Context.getCanonicalType(ToPointee); |
2295 | Qualifiers Quals = CanonFromPointee.getQualifiers(); |
2296 | |
2297 | if (StripObjCLifetime) |
2298 | Quals.removeObjCLifetime(); |
2299 | |
2300 | |
2301 | if (CanonToPointee.getLocalQualifiers() == Quals) { |
2302 | |
2303 | if (!ToType.isNull()) |
2304 | return ToType.getUnqualifiedType(); |
2305 | |
2306 | |
2307 | |
2308 | if (isa<ObjCObjectPointerType>(ToType)) |
2309 | return Context.getObjCObjectPointerType(ToPointee); |
2310 | return Context.getPointerType(ToPointee); |
2311 | } |
2312 | |
2313 | |
2314 | QualType QualifiedCanonToPointee |
2315 | = Context.getQualifiedType(CanonToPointee.getLocalUnqualifiedType(), Quals); |
2316 | |
2317 | if (isa<ObjCObjectPointerType>(ToType)) |
2318 | return Context.getObjCObjectPointerType(QualifiedCanonToPointee); |
2319 | return Context.getPointerType(QualifiedCanonToPointee); |
2320 | } |
2321 | |
2322 | static bool isNullPointerConstantForConversion(Expr *Expr, |
2323 | bool InOverloadResolution, |
2324 | ASTContext &Context) { |
2325 | |
2326 | |
2327 | if (Expr->isValueDependent() && !Expr->isTypeDependent() && |
2328 | Expr->getType()->isIntegerType() && !Expr->getType()->isEnumeralType()) |
2329 | return !InOverloadResolution; |
2330 | |
2331 | return Expr->isNullPointerConstant(Context, |
2332 | InOverloadResolution? Expr::NPC_ValueDependentIsNotNull |
2333 | : Expr::NPC_ValueDependentIsNull); |
2334 | } |
2335 | |
2336 | |
2337 | |
2338 | |
2339 | |
2340 | |
2341 | |
2342 | |
2343 | |
2344 | |
2345 | |
2346 | |
2347 | |
2348 | |
2349 | |
2350 | |
2351 | |
2352 | bool Sema::IsPointerConversion(Expr *From, QualType FromType, QualType ToType, |
2353 | bool InOverloadResolution, |
2354 | QualType& ConvertedType, |
2355 | bool &IncompatibleObjC) { |
2356 | IncompatibleObjC = false; |
2357 | if (isObjCPointerConversion(FromType, ToType, ConvertedType, |
2358 | IncompatibleObjC)) |
2359 | return true; |
2360 | |
2361 | |
2362 | if (ToType->isObjCObjectPointerType() && |
2363 | isNullPointerConstantForConversion(From, InOverloadResolution, Context)) { |
2364 | ConvertedType = ToType; |
2365 | return true; |
2366 | } |
2367 | |
2368 | |
2369 | if (FromType->isBlockPointerType() && ToType->isPointerType() && |
2370 | ToType->castAs<PointerType>()->getPointeeType()->isVoidType()) { |
2371 | ConvertedType = ToType; |
2372 | return true; |
2373 | } |
2374 | |
2375 | |
2376 | if (ToType->isBlockPointerType() && |
2377 | isNullPointerConstantForConversion(From, InOverloadResolution, Context)) { |
2378 | ConvertedType = ToType; |
2379 | return true; |
2380 | } |
2381 | |
2382 | |
2383 | |
2384 | if (ToType->isNullPtrType() && |
2385 | isNullPointerConstantForConversion(From, InOverloadResolution, Context)) { |
2386 | ConvertedType = ToType; |
2387 | return true; |
2388 | } |
2389 | |
2390 | const PointerType* ToTypePtr = ToType->getAs<PointerType>(); |
2391 | if (!ToTypePtr) |
2392 | return false; |
2393 | |
2394 | |
2395 | if (isNullPointerConstantForConversion(From, InOverloadResolution, Context)) { |
2396 | ConvertedType = ToType; |
2397 | return true; |
2398 | } |
2399 | |
2400 | |
2401 | |
2402 | QualType ToPointeeType = ToTypePtr->getPointeeType(); |
2403 | if (FromType->isObjCObjectPointerType() && ToPointeeType->isVoidType() && |
2404 | !getLangOpts().ObjCAutoRefCount) { |
2405 | ConvertedType = BuildSimilarlyQualifiedPointerType( |
2406 | FromType->getAs<ObjCObjectPointerType>(), |
2407 | ToPointeeType, |
2408 | ToType, Context); |
2409 | return true; |
2410 | } |
2411 | const PointerType *FromTypePtr = FromType->getAs<PointerType>(); |
2412 | if (!FromTypePtr) |
2413 | return false; |
2414 | |
2415 | QualType FromPointeeType = FromTypePtr->getPointeeType(); |
2416 | |
2417 | |
2418 | |
2419 | if (Context.hasSameUnqualifiedType(FromPointeeType, ToPointeeType)) |
2420 | return false; |
2421 | |
2422 | |
2423 | |
2424 | |
2425 | if (FromPointeeType->isIncompleteOrObjectType() && |
2426 | ToPointeeType->isVoidType()) { |
2427 | ConvertedType = BuildSimilarlyQualifiedPointerType(FromTypePtr, |
2428 | ToPointeeType, |
2429 | ToType, Context, |
2430 | true); |
2431 | return true; |
2432 | } |
2433 | |
2434 | |
2435 | if (getLangOpts().MSVCCompat && FromPointeeType->isFunctionType() && |
2436 | ToPointeeType->isVoidType()) { |
2437 | ConvertedType = BuildSimilarlyQualifiedPointerType(FromTypePtr, |
2438 | ToPointeeType, |
2439 | ToType, Context); |
2440 | return true; |
2441 | } |
2442 | |
2443 | |
2444 | |
2445 | if (!getLangOpts().CPlusPlus && |
2446 | Context.typesAreCompatible(FromPointeeType, ToPointeeType)) { |
2447 | ConvertedType = BuildSimilarlyQualifiedPointerType(FromTypePtr, |
2448 | ToPointeeType, |
2449 | ToType, Context); |
2450 | return true; |
2451 | } |
2452 | |
2453 | |
2454 | |
2455 | |
2456 | |
2457 | |
2458 | |
2459 | |
2460 | |
2461 | |
2462 | |
2463 | |
2464 | |
2465 | |
2466 | if (getLangOpts().CPlusPlus && FromPointeeType->isRecordType() && |
2467 | ToPointeeType->isRecordType() && |
2468 | !Context.hasSameUnqualifiedType(FromPointeeType, ToPointeeType) && |
2469 | IsDerivedFrom(From->getBeginLoc(), FromPointeeType, ToPointeeType)) { |
2470 | ConvertedType = BuildSimilarlyQualifiedPointerType(FromTypePtr, |
2471 | ToPointeeType, |
2472 | ToType, Context); |
2473 | return true; |
2474 | } |
2475 | |
2476 | if (FromPointeeType->isVectorType() && ToPointeeType->isVectorType() && |
2477 | Context.areCompatibleVectorTypes(FromPointeeType, ToPointeeType)) { |
2478 | ConvertedType = BuildSimilarlyQualifiedPointerType(FromTypePtr, |
2479 | ToPointeeType, |
2480 | ToType, Context); |
2481 | return true; |
2482 | } |
2483 | |
2484 | return false; |
2485 | } |
2486 | |
2487 | |
2488 | static QualType AdoptQualifiers(ASTContext &Context, QualType T, Qualifiers Qs){ |
2489 | Qualifiers TQs = T.getQualifiers(); |
2490 | |
2491 | |
2492 | if (TQs == Qs) |
2493 | return T; |
2494 | |
2495 | if (Qs.compatiblyIncludes(TQs)) |
2496 | return Context.getQualifiedType(T, Qs); |
2497 | |
2498 | return Context.getQualifiedType(T.getUnqualifiedType(), Qs); |
2499 | } |
2500 | |
2501 | |
2502 | |
2503 | |
2504 | bool Sema::isObjCPointerConversion(QualType FromType, QualType ToType, |
2505 | QualType& ConvertedType, |
2506 | bool &IncompatibleObjC) { |
2507 | if (!getLangOpts().ObjC) |
2508 | return false; |
2509 | |
2510 | |
2511 | Qualifiers FromQualifiers = FromType.getQualifiers(); |
2512 | |
2513 | |
2514 | const ObjCObjectPointerType* ToObjCPtr = |
2515 | ToType->getAs<ObjCObjectPointerType>(); |
2516 | const ObjCObjectPointerType *FromObjCPtr = |
2517 | FromType->getAs<ObjCObjectPointerType>(); |
2518 | |
2519 | if (ToObjCPtr && FromObjCPtr) { |
2520 | |
2521 | |
2522 | if (Context.hasSameUnqualifiedType(ToObjCPtr->getPointeeType(), |
2523 | FromObjCPtr->getPointeeType())) |
2524 | return false; |
2525 | |
2526 | |
2527 | if (Context.canAssignObjCInterfaces(ToObjCPtr, FromObjCPtr)) { |
2528 | const ObjCInterfaceType* LHS = ToObjCPtr->getInterfaceType(); |
2529 | const ObjCInterfaceType* RHS = FromObjCPtr->getInterfaceType(); |
2530 | if (getLangOpts().CPlusPlus && LHS && RHS && |
2531 | !ToObjCPtr->getPointeeType().isAtLeastAsQualifiedAs( |
2532 | FromObjCPtr->getPointeeType())) |
2533 | return false; |
2534 | ConvertedType = BuildSimilarlyQualifiedPointerType(FromObjCPtr, |
2535 | ToObjCPtr->getPointeeType(), |
2536 | ToType, Context); |
2537 | ConvertedType = AdoptQualifiers(Context, ConvertedType, FromQualifiers); |
2538 | return true; |
2539 | } |
2540 | |
2541 | if (Context.canAssignObjCInterfaces(FromObjCPtr, ToObjCPtr)) { |
2542 | |
2543 | |
2544 | |
2545 | IncompatibleObjC = true; |
2546 | ConvertedType = BuildSimilarlyQualifiedPointerType(FromObjCPtr, |
2547 | ToObjCPtr->getPointeeType(), |
2548 | ToType, Context); |
2549 | ConvertedType = AdoptQualifiers(Context, ConvertedType, FromQualifiers); |
2550 | return true; |
2551 | } |
2552 | } |
2553 | |
2554 | QualType ToPointeeType; |
2555 | if (const PointerType *ToCPtr = ToType->getAs<PointerType>()) |
2556 | ToPointeeType = ToCPtr->getPointeeType(); |
2557 | else if (const BlockPointerType *ToBlockPtr = |
2558 | ToType->getAs<BlockPointerType>()) { |
2559 | |
2560 | |
2561 | if (FromObjCPtr && FromObjCPtr->isObjCBuiltinType()) { |
2562 | ConvertedType = AdoptQualifiers(Context, ToType, FromQualifiers); |
2563 | return true; |
2564 | } |
2565 | ToPointeeType = ToBlockPtr->getPointeeType(); |
2566 | } |
2567 | else if (FromType->getAs<BlockPointerType>() && |
2568 | ToObjCPtr && ToObjCPtr->isObjCBuiltinType()) { |
2569 | |
2570 | |
2571 | ConvertedType = AdoptQualifiers(Context, ToType, FromQualifiers); |
2572 | return true; |
2573 | } |
2574 | else |
2575 | return false; |
2576 | |
2577 | QualType FromPointeeType; |
2578 | if (const PointerType *FromCPtr = FromType->getAs<PointerType>()) |
2579 | FromPointeeType = FromCPtr->getPointeeType(); |
2580 | else if (const BlockPointerType *FromBlockPtr = |
2581 | FromType->getAs<BlockPointerType>()) |
2582 | FromPointeeType = FromBlockPtr->getPointeeType(); |
2583 | else |
2584 | return false; |
2585 | |
2586 | |
2587 | |
2588 | if (FromPointeeType->isPointerType() && ToPointeeType->isPointerType() && |
2589 | isObjCPointerConversion(FromPointeeType, ToPointeeType, ConvertedType, |
2590 | IncompatibleObjC)) { |
2591 | |
2592 | IncompatibleObjC = true; |
2593 | ConvertedType = Context.getPointerType(ConvertedType); |
2594 | ConvertedType = AdoptQualifiers(Context, ConvertedType, FromQualifiers); |
2595 | return true; |
2596 | } |
2597 | |
2598 | |
2599 | if (FromPointeeType->getAs<ObjCObjectPointerType>() && |
2600 | ToPointeeType->getAs<ObjCObjectPointerType>() && |
2601 | isObjCPointerConversion(FromPointeeType, ToPointeeType, ConvertedType, |
2602 | IncompatibleObjC)) { |
2603 | |
2604 | ConvertedType = Context.getPointerType(ConvertedType); |
2605 | ConvertedType = AdoptQualifiers(Context, ConvertedType, FromQualifiers); |
2606 | return true; |
2607 | } |
2608 | |
2609 | |
2610 | |
2611 | |
2612 | |
2613 | const FunctionProtoType *FromFunctionType |
2614 | = FromPointeeType->getAs<FunctionProtoType>(); |
2615 | const FunctionProtoType *ToFunctionType |
2616 | = ToPointeeType->getAs<FunctionProtoType>(); |
2617 | if (FromFunctionType && ToFunctionType) { |
2618 | |
2619 | |
2620 | if (Context.getCanonicalType(FromPointeeType) |
2621 | == Context.getCanonicalType(ToPointeeType)) |
2622 | return false; |
2623 | |
2624 | |
2625 | |
2626 | if (FromFunctionType->getNumParams() != ToFunctionType->getNumParams() || |
2627 | FromFunctionType->isVariadic() != ToFunctionType->isVariadic() || |
2628 | FromFunctionType->getMethodQuals() != ToFunctionType->getMethodQuals()) |
2629 | return false; |
2630 | |
2631 | bool HasObjCConversion = false; |
2632 | if (Context.getCanonicalType(FromFunctionType->getReturnType()) == |
2633 | Context.getCanonicalType(ToFunctionType->getReturnType())) { |
2634 | |
2635 | } else if (isObjCPointerConversion(FromFunctionType->getReturnType(), |
2636 | ToFunctionType->getReturnType(), |
2637 | ConvertedType, IncompatibleObjC)) { |
2638 | |
2639 | HasObjCConversion = true; |
2640 | } else { |
2641 | |
2642 | return false; |
2643 | } |
2644 | |
2645 | |
2646 | for (unsigned ArgIdx = 0, NumArgs = FromFunctionType->getNumParams(); |
2647 | ArgIdx != NumArgs; ++ArgIdx) { |
2648 | QualType FromArgType = FromFunctionType->getParamType(ArgIdx); |
2649 | QualType ToArgType = ToFunctionType->getParamType(ArgIdx); |
2650 | if (Context.getCanonicalType(FromArgType) |
2651 | == Context.getCanonicalType(ToArgType)) { |
2652 | |
2653 | } else if (isObjCPointerConversion(FromArgType, ToArgType, |
2654 | ConvertedType, IncompatibleObjC)) { |
2655 | |
2656 | HasObjCConversion = true; |
2657 | } else { |
2658 | |
2659 | return false; |
2660 | } |
2661 | } |
2662 | |
2663 | if (HasObjCConversion) { |
2664 | |
2665 | |
2666 | ConvertedType = AdoptQualifiers(Context, ToType, FromQualifiers); |
2667 | IncompatibleObjC = true; |
2668 | return true; |
2669 | } |
2670 | } |
2671 | |
2672 | return false; |
2673 | } |
2674 | |
2675 | |
2676 | |
2677 | |
2678 | |
2679 | |
2680 | |
2681 | |
2682 | |
2683 | |
2684 | bool Sema::isObjCWritebackConversion(QualType FromType, QualType ToType, |
2685 | QualType &ConvertedType) { |
2686 | if (!getLangOpts().ObjCAutoRefCount || |
2687 | Context.hasSameUnqualifiedType(FromType, ToType)) |
2688 | return false; |
2689 | |
2690 | |
2691 | QualType ToPointee; |
2692 | if (const PointerType *ToPointer = ToType->getAs<PointerType>()) |
2693 | ToPointee = ToPointer->getPointeeType(); |
2694 | else |
2695 | return false; |
2696 | |
2697 | Qualifiers ToQuals = ToPointee.getQualifiers(); |
2698 | if (!ToPointee->isObjCLifetimeType() || |
2699 | ToQuals.getObjCLifetime() != Qualifiers::OCL_Autoreleasing || |
2700 | !ToQuals.withoutObjCLifetime().empty()) |
2701 | return false; |
2702 | |
2703 | |
2704 | QualType FromPointee; |
2705 | if (const PointerType *FromPointer = FromType->getAs<PointerType>()) |
2706 | FromPointee = FromPointer->getPointeeType(); |
2707 | else |
2708 | return false; |
2709 | |
2710 | Qualifiers FromQuals = FromPointee.getQualifiers(); |
2711 | if (!FromPointee->isObjCLifetimeType() || |
2712 | (FromQuals.getObjCLifetime() != Qualifiers::OCL_Strong && |
2713 | FromQuals.getObjCLifetime() != Qualifiers::OCL_Weak)) |
2714 | return false; |
2715 | |
2716 | |
2717 | FromQuals.setObjCLifetime(Qualifiers::OCL_Autoreleasing); |
2718 | if (!ToQuals.compatiblyIncludes(FromQuals)) |
2719 | return false; |
2720 | |
2721 | |
2722 | |
2723 | |
2724 | FromPointee = FromPointee.getUnqualifiedType(); |
2725 | |
2726 | |
2727 | ToPointee = ToPointee.getUnqualifiedType(); |
2728 | bool IncompatibleObjC; |
2729 | if (Context.typesAreCompatible(FromPointee, ToPointee)) |
2730 | FromPointee = ToPointee; |
2731 | else if (!isObjCPointerConversion(FromPointee, ToPointee, FromPointee, |
2732 | IncompatibleObjC)) |
2733 | return false; |
2734 | |
2735 | |
2736 | |
2737 | FromPointee = Context.getQualifiedType(FromPointee, FromQuals); |
2738 | ConvertedType = Context.getPointerType(FromPointee); |
2739 | return true; |
2740 | } |
2741 | |
2742 | bool Sema::IsBlockPointerConversion(QualType FromType, QualType ToType, |
2743 | QualType& ConvertedType) { |
2744 | QualType ToPointeeType; |
2745 | if (const BlockPointerType *ToBlockPtr = |
2746 | ToType->getAs<BlockPointerType>()) |
2747 | ToPointeeType = ToBlockPtr->getPointeeType(); |
2748 | else |
2749 | return false; |
2750 | |
2751 | QualType FromPointeeType; |
2752 | if (const BlockPointerType *FromBlockPtr = |
2753 | FromType->getAs<BlockPointerType>()) |
2754 | FromPointeeType = FromBlockPtr->getPointeeType(); |
2755 | else |
2756 | return false; |
2757 | |
2758 | |
2759 | |
2760 | |
2761 | const FunctionProtoType *FromFunctionType |
2762 | = FromPointeeType->getAs<FunctionProtoType>(); |
2763 | const FunctionProtoType *ToFunctionType |
2764 | = ToPointeeType->getAs<FunctionProtoType>(); |
2765 | |
2766 | if (!FromFunctionType || !ToFunctionType) |
2767 | return false; |
2768 | |
2769 | if (Context.hasSameType(FromPointeeType, ToPointeeType)) |
2770 | return true; |
2771 | |
2772 | |
2773 | |
2774 | if (FromFunctionType->getNumParams() != ToFunctionType->getNumParams() || |
2775 | FromFunctionType->isVariadic() != ToFunctionType->isVariadic()) |
2776 | return false; |
2777 | |
2778 | FunctionType::ExtInfo FromEInfo = FromFunctionType->getExtInfo(); |
2779 | FunctionType::ExtInfo ToEInfo = ToFunctionType->getExtInfo(); |
2780 | if (FromEInfo != ToEInfo) |
2781 | return false; |
2782 | |
2783 | bool IncompatibleObjC = false; |
2784 | if (Context.hasSameType(FromFunctionType->getReturnType(), |
2785 | ToFunctionType->getReturnType())) { |
2786 | |
2787 | } else { |
2788 | QualType RHS = FromFunctionType->getReturnType(); |
2789 | QualType LHS = ToFunctionType->getReturnType(); |
2790 | if ((!getLangOpts().CPlusPlus || !RHS->isRecordType()) && |
2791 | !RHS.hasQualifiers() && LHS.hasQualifiers()) |
2792 | LHS = LHS.getUnqualifiedType(); |
2793 | |
2794 | if (Context.hasSameType(RHS,LHS)) { |
2795 | |
2796 | } else if (isObjCPointerConversion(RHS, LHS, |
2797 | ConvertedType, IncompatibleObjC)) { |
2798 | if (IncompatibleObjC) |
2799 | return false; |
2800 | |
2801 | } |
2802 | else |
2803 | return false; |
2804 | } |
2805 | |
2806 | |
2807 | for (unsigned ArgIdx = 0, NumArgs = FromFunctionType->getNumParams(); |
2808 | ArgIdx != NumArgs; ++ArgIdx) { |
2809 | IncompatibleObjC = false; |
2810 | QualType FromArgType = FromFunctionType->getParamType(ArgIdx); |
2811 | QualType ToArgType = ToFunctionType->getParamType(ArgIdx); |
2812 | if (Context.hasSameType(FromArgType, ToArgType)) { |
2813 | |
2814 | } else if (isObjCPointerConversion(ToArgType, FromArgType, |
2815 | ConvertedType, IncompatibleObjC)) { |
2816 | if (IncompatibleObjC) |
2817 | return false; |
2818 | |
2819 | } else |
2820 | |
2821 | return false; |
2822 | } |
2823 | |
2824 | SmallVector<FunctionProtoType::ExtParameterInfo, 4> NewParamInfos; |
2825 | bool CanUseToFPT, CanUseFromFPT; |
2826 | if (!Context.mergeExtParameterInfo(ToFunctionType, FromFunctionType, |
2827 | CanUseToFPT, CanUseFromFPT, |
2828 | NewParamInfos)) |
2829 | return false; |
2830 | |
2831 | ConvertedType = ToType; |
2832 | return true; |
2833 | } |
2834 | |
2835 | enum { |
2836 | ft_default, |
2837 | ft_different_class, |
2838 | ft_parameter_arity, |
2839 | ft_parameter_mismatch, |
2840 | ft_return_type, |
2841 | ft_qualifer_mismatch, |
2842 | ft_noexcept |
2843 | }; |
2844 | |
2845 | |
2846 | |
2847 | static const FunctionProtoType *tryGetFunctionProtoType(QualType FromType) { |
2848 | if (auto *FPT = FromType->getAs<FunctionProtoType>()) |
2849 | return FPT; |
2850 | |
2851 | if (auto *MPT = FromType->getAs<MemberPointerType>()) |
2852 | return MPT->getPointeeType()->getAs<FunctionProtoType>(); |
2853 | |
2854 | return nullptr; |
2855 | } |
2856 | |
2857 | |
2858 | |
2859 | |
2860 | void Sema::HandleFunctionTypeMismatch(PartialDiagnostic &PDiag, |
2861 | QualType FromType, QualType ToType) { |
2862 | |
2863 | if (FromType.isNull() || ToType.isNull()) { |
2864 | PDiag << ft_default; |
2865 | return; |
2866 | } |
2867 | |
2868 | |
2869 | if (FromType->isMemberPointerType() && ToType->isMemberPointerType()) { |
2870 | const auto *FromMember = FromType->castAs<MemberPointerType>(), |
2871 | *ToMember = ToType->castAs<MemberPointerType>(); |
2872 | if (!Context.hasSameType(FromMember->getClass(), ToMember->getClass())) { |
2873 | PDiag << ft_different_class << QualType(ToMember->getClass(), 0) |
2874 | << QualType(FromMember->getClass(), 0); |
2875 | return; |
2876 | } |
2877 | FromType = FromMember->getPointeeType(); |
2878 | ToType = ToMember->getPointeeType(); |
2879 | } |
2880 | |
2881 | if (FromType->isPointerType()) |
2882 | FromType = FromType->getPointeeType(); |
2883 | if (ToType->isPointerType()) |
2884 | ToType = ToType->getPointeeType(); |
2885 | |
2886 | |
2887 | FromType = FromType.getNonReferenceType(); |
2888 | ToType = ToType.getNonReferenceType(); |
2889 | |
2890 | |
2891 | if (FromType->isInstantiationDependentType() && |
2892 | !FromType->getAs<TemplateSpecializationType>()) { |
2893 | PDiag << ft_default; |
2894 | return; |
2895 | } |
2896 | |
2897 | |
2898 | if (Context.hasSameType(FromType, ToType)) { |
2899 | PDiag << ft_default; |
2900 | return; |
2901 | } |
2902 | |
2903 | const FunctionProtoType *FromFunction = tryGetFunctionProtoType(FromType), |
2904 | *ToFunction = tryGetFunctionProtoType(ToType); |
2905 | |
2906 | |
2907 | if (!FromFunction || !ToFunction) { |
2908 | PDiag << ft_default; |
2909 | return; |
2910 | } |
2911 | |
2912 | if (FromFunction->getNumParams() != ToFunction->getNumParams()) { |
2913 | PDiag << ft_parameter_arity << ToFunction->getNumParams() |
2914 | << FromFunction->getNumParams(); |
2915 | return; |
2916 | } |
2917 | |
2918 | |
2919 | unsigned ArgPos; |
2920 | if (!FunctionParamTypesAreEqual(FromFunction, ToFunction, &ArgPos)) { |
2921 | PDiag << ft_parameter_mismatch << ArgPos + 1 |
2922 | << ToFunction->getParamType(ArgPos) |
2923 | << FromFunction->getParamType(ArgPos); |
2924 | return; |
2925 | } |
2926 | |
2927 | |
2928 | if (!Context.hasSameType(FromFunction->getReturnType(), |
2929 | ToFunction->getReturnType())) { |
2930 | PDiag << ft_return_type << ToFunction->getReturnType() |
2931 | << FromFunction->getReturnType(); |
2932 | return; |
2933 | } |
2934 | |
2935 | if (FromFunction->getMethodQuals() != ToFunction->getMethodQuals()) { |
2936 | PDiag << ft_qualifer_mismatch << ToFunction->getMethodQuals() |
2937 | << FromFunction->getMethodQuals(); |
2938 | return; |
2939 | } |
2940 | |
2941 | |
2942 | |
2943 | if (cast<FunctionProtoType>(FromFunction->getCanonicalTypeUnqualified()) |
2944 | ->isNothrow() != |
2945 | cast<FunctionProtoType>(ToFunction->getCanonicalTypeUnqualified()) |
2946 | ->isNothrow()) { |
2947 | PDiag << ft_noexcept; |
2948 | return; |
2949 | } |
2950 | |
2951 | |
2952 | PDiag << ft_default; |
2953 | } |
2954 | |
2955 | |
2956 | |
2957 | |
2958 | |
2959 | bool Sema::FunctionParamTypesAreEqual(const FunctionProtoType *OldType, |
2960 | const FunctionProtoType *NewType, |
2961 | unsigned *ArgPos) { |
2962 | for (FunctionProtoType::param_type_iterator O = OldType->param_type_begin(), |
2963 | N = NewType->param_type_begin(), |
2964 | E = OldType->param_type_end(); |
2965 | O && (O != E); ++O, ++N) { |
2966 | |
2967 | |
2968 | QualType Old = Context.removePtrSizeAddrSpace(O->getUnqualifiedType()); |
2969 | QualType New = Context.removePtrSizeAddrSpace(N->getUnqualifiedType()); |
2970 | |
2971 | if (!Context.hasSameType(Old, New)) { |
2972 | if (ArgPos) |
2973 | *ArgPos = O - OldType->param_type_begin(); |
2974 | return false; |
2975 | } |
2976 | } |
2977 | return true; |
2978 | } |
2979 | |
2980 | |
2981 | |
2982 | |
2983 | |
2984 | |
2985 | |
2986 | bool Sema::CheckPointerConversion(Expr *From, QualType ToType, |
2987 | CastKind &Kind, |
2988 | CXXCastPath& BasePath, |
2989 | bool IgnoreBaseAccess, |
2990 | bool Diagnose) { |
2991 | QualType FromType = From->getType(); |
2992 | bool IsCStyleOrFunctionalCast = IgnoreBaseAccess; |
2993 | |
2994 | Kind = CK_BitCast; |
2995 | |
2996 | if (Diagnose && !IsCStyleOrFunctionalCast && !FromType->isAnyPointerType() && |
2997 | From->isNullPointerConstant(Context, Expr::NPC_ValueDependentIsNotNull) == |
2998 | Expr::NPCK_ZeroExpression) { |
2999 | if (Context.hasSameUnqualifiedType(From->getType(), Context.BoolTy)) |
3000 | DiagRuntimeBehavior(From->getExprLoc(), From, |
3001 | PDiag(diag::warn_impcast_bool_to_null_pointer) |
3002 | << ToType << From->getSourceRange()); |
3003 | else if (!isUnevaluatedContext()) |
3004 | Diag(From->getExprLoc(), diag::warn_non_literal_null_pointer) |
3005 | << ToType << From->getSourceRange(); |
3006 | } |
3007 | if (const PointerType *ToPtrType = ToType->getAs<PointerType>()) { |
3008 | if (const PointerType *FromPtrType = FromType->getAs<PointerType>()) { |
3009 | QualType FromPointeeType = FromPtrType->getPointeeType(), |
3010 | ToPointeeType = ToPtrType->getPointeeType(); |
3011 | |
3012 | if (FromPointeeType->isRecordType() && ToPointeeType->isRecordType() && |
3013 | !Context.hasSameUnqualifiedType(FromPointeeType, ToPointeeType)) { |
3014 | |
3015 | |
3016 | unsigned InaccessibleID = 0; |
3017 | unsigned AmbiguousID = 0; |
3018 | if (Diagnose) { |
3019 | InaccessibleID = diag::err_upcast_to_inaccessible_base; |
3020 | AmbiguousID = diag::err_ambiguous_derived_to_base_conv; |
3021 | } |
3022 | if (CheckDerivedToBaseConversion( |
3023 | FromPointeeType, ToPointeeType, InaccessibleID, AmbiguousID, |
3024 | From->getExprLoc(), From->getSourceRange(), DeclarationName(), |
3025 | &BasePath, IgnoreBaseAccess)) |
3026 | return true; |
3027 | |
3028 | |
3029 | Kind = CK_DerivedToBase; |
3030 | } |
3031 | |
3032 | if (Diagnose && !IsCStyleOrFunctionalCast && |
3033 | FromPointeeType->isFunctionType() && ToPointeeType->isVoidType()) { |
3034 | assert(getLangOpts().MSVCCompat && |
3035 | "this should only be possible with MSVCCompat!"); |
3036 | Diag(From->getExprLoc(), diag::ext_ms_impcast_fn_obj) |
3037 | << From->getSourceRange(); |
3038 | } |
3039 | } |
3040 | } else if (const ObjCObjectPointerType *ToPtrType = |
3041 | ToType->getAs<ObjCObjectPointerType>()) { |
3042 | if (const ObjCObjectPointerType *FromPtrType = |
3043 | FromType->getAs<ObjCObjectPointerType>()) { |
3044 | |
3045 | |
3046 | |
3047 | if (FromPtrType->isObjCBuiltinType() || ToPtrType->isObjCBuiltinType()) |
3048 | return false; |
3049 | } else if (FromType->isBlockPointerType()) { |
3050 | Kind = CK_BlockPointerToObjCPointerCast; |
3051 | } else { |
3052 | Kind = CK_CPointerToObjCPointerCast; |
3053 | } |
3054 | } else if (ToType->isBlockPointerType()) { |
3055 | if (!FromType->isBlockPointerType()) |
3056 | Kind = CK_AnyPointerToBlockPointerCast; |
3057 | } |
3058 | |
3059 | |
3060 | |
3061 | if (From->isNullPointerConstant(Context, Expr::NPC_ValueDependentIsNull)) |
3062 | Kind = CK_NullToPointer; |
3063 | |
3064 | return false; |
3065 | } |
3066 | |
3067 | |
3068 | |
3069 | |
3070 | |
3071 | |
3072 | bool Sema::IsMemberPointerConversion(Expr *From, QualType FromType, |
3073 | QualType ToType, |
3074 | bool InOverloadResolution, |
3075 | QualType &ConvertedType) { |
3076 | const MemberPointerType *ToTypePtr = ToType->getAs<MemberPointerType>(); |
3077 | if (!ToTypePtr) |
3078 | return false; |
3079 | |
3080 | |
3081 | if (From->isNullPointerConstant(Context, |
3082 | InOverloadResolution? Expr::NPC_ValueDependentIsNotNull |
3083 | : Expr::NPC_ValueDependentIsNull)) { |
3084 | ConvertedType = ToType; |
3085 | return true; |
3086 | } |
3087 | |
3088 | |
3089 | const MemberPointerType *FromTypePtr = FromType->getAs<MemberPointerType>(); |
3090 | if (!FromTypePtr) |
3091 | return false; |
3092 | |
3093 | |
3094 | |
3095 | QualType FromClass(FromTypePtr->getClass(), 0); |
3096 | QualType ToClass(ToTypePtr->getClass(), 0); |
3097 | |
3098 | if (!Context.hasSameUnqualifiedType(FromClass, ToClass) && |
3099 | IsDerivedFrom(From->getBeginLoc(), ToClass, FromClass)) { |
3100 | ConvertedType = Context.getMemberPointerType(FromTypePtr->getPointeeType(), |
3101 | ToClass.getTypePtr()); |
3102 | return true; |
3103 | } |
3104 | |
3105 | return false; |
3106 | } |
3107 | |
3108 | |
3109 | |
3110 | |
3111 | |
3112 | |
3113 | |
3114 | bool Sema::CheckMemberPointerConversion(Expr *From, QualType ToType, |
3115 | CastKind &Kind, |
3116 | CXXCastPath &BasePath, |
3117 | bool IgnoreBaseAccess) { |
3118 | QualType FromType = From->getType(); |
3119 | const MemberPointerType *FromPtrType = FromType->getAs<MemberPointerType>(); |
3120 | if (!FromPtrType) { |
3121 | |
3122 | assert(From->isNullPointerConstant(Context, |
3123 | Expr::NPC_ValueDependentIsNull) && |
3124 | "Expr must be null pointer constant!"); |
3125 | Kind = CK_NullToMemberPointer; |
3126 | return false; |
3127 | } |
3128 | |
3129 | const MemberPointerType *ToPtrType = ToType->getAs<MemberPointerType>(); |
3130 | assert(ToPtrType && "No member pointer cast has a target type " |
3131 | "that is not a member pointer."); |
3132 | |
3133 | QualType FromClass = QualType(FromPtrType->getClass(), 0); |
3134 | QualType ToClass = QualType(ToPtrType->getClass(), 0); |
3135 | |
3136 | |
3137 | assert(FromClass->isRecordType() && "Pointer into non-class."); |
3138 | assert(ToClass->isRecordType() && "Pointer into non-class."); |
3139 | |
3140 | CXXBasePaths Paths(true, true, |
3141 | true); |
3142 | bool DerivationOkay = |
3143 | IsDerivedFrom(From->getBeginLoc(), ToClass, FromClass, Paths); |
3144 | assert(DerivationOkay && |
3145 | "Should not have been called if derivation isn't OK."); |
3146 | (void)DerivationOkay; |
3147 | |
3148 | if (Paths.isAmbiguous(Context.getCanonicalType(FromClass). |
3149 | getUnqualifiedType())) { |
3150 | std::string PathDisplayStr = getAmbiguousPathsDisplayString(Paths); |
3151 | Diag(From->getExprLoc(), diag::err_ambiguous_memptr_conv) |
3152 | << 0 << FromClass << ToClass << PathDisplayStr << From->getSourceRange(); |
3153 | return true; |
3154 | } |
3155 | |
3156 | if (const RecordType *VBase = Paths.getDetectedVirtual()) { |
3157 | Diag(From->getExprLoc(), diag::err_memptr_conv_via_virtual) |
3158 | << FromClass << ToClass << QualType(VBase, 0) |
3159 | << From->getSourceRange(); |
3160 | return true; |
3161 | } |
3162 | |
3163 | if (!IgnoreBaseAccess) |
3164 | CheckBaseClassAccess(From->getExprLoc(), FromClass, ToClass, |
3165 | Paths.front(), |
3166 | diag::err_downcast_from_inaccessible_base); |
3167 | |
3168 | |
3169 | BuildBasePathArray(Paths, BasePath); |
3170 | Kind = CK_BaseToDerivedMemberPointer; |
3171 | return false; |
3172 | } |
3173 | |
3174 | |
3175 | |
3176 | static bool isNonTrivialObjCLifetimeConversion(Qualifiers FromQuals, |
3177 | Qualifiers ToQuals) { |
3178 | |
3179 | if (ToQuals.hasConst() && |
3180 | ToQuals.getObjCLifetime() == Qualifiers::OCL_ExplicitNone) |
3181 | return false; |
3182 | |
3183 | return true; |
3184 | } |
3185 | |
3186 | |
3187 | |
3188 | |
3189 | |
3190 | |
3191 | |
3192 | static bool isQualificationConversionStep(QualType FromType, QualType ToType, |
3193 | bool CStyle, bool IsTopLevel, |
3194 | bool &PreviousToQualsIncludeConst, |
3195 | bool &ObjCLifetimeConversion) { |
3196 | Qualifiers FromQuals = FromType.getQualifiers(); |
3197 | Qualifiers ToQuals = ToType.getQualifiers(); |
3198 | |
3199 | |
3200 | if (ToType.getUnqualifiedType()->isVoidType()) |
3201 | FromQuals.removeUnaligned(); |
3202 | |
3203 | |
3204 | |
3205 | if (FromQuals.getObjCLifetime() != ToQuals.getObjCLifetime()) { |
3206 | if (ToQuals.compatiblyIncludesObjCLifetime(FromQuals)) { |
3207 | if (isNonTrivialObjCLifetimeConversion(FromQuals, ToQuals)) |
3208 | ObjCLifetimeConversion = true; |
3209 | FromQuals.removeObjCLifetime(); |
3210 | ToQuals.removeObjCLifetime(); |
3211 | } else { |
3212 | |
3213 | |
3214 | return false; |
3215 | } |
3216 | } |
3217 | |
3218 | |
3219 | if (FromQuals.getObjCGCAttr() != ToQuals.getObjCGCAttr() && |
3220 | (!FromQuals.hasObjCGCAttr() || !ToQuals.hasObjCGCAttr())) { |
3221 | FromQuals.removeObjCGCAttr(); |
3222 | ToQuals.removeObjCGCAttr(); |
3223 | } |
3224 | |
3225 | |
3226 | |
3227 | if (!CStyle && !ToQuals.compatiblyIncludes(FromQuals)) |
3228 | return false; |
3229 | |
3230 | |
3231 | |
3232 | |
3233 | |
3234 | |
3235 | if (ToQuals.getAddressSpace() != FromQuals.getAddressSpace() && |
3236 | (!IsTopLevel || |
3237 | !(ToQuals.isAddressSpaceSupersetOf(FromQuals) || |
3238 | (CStyle && FromQuals.isAddressSpaceSupersetOf(ToQuals))))) |
3239 | return false; |
3240 | |
3241 | |
3242 | |
3243 | if (!CStyle && FromQuals.getCVRQualifiers() != ToQuals.getCVRQualifiers() && |
3244 | !PreviousToQualsIncludeConst) |
3245 | return false; |
3246 | |
3247 | |
3248 | |
3249 | PreviousToQualsIncludeConst = |
3250 | PreviousToQualsIncludeConst && ToQuals.hasConst(); |
3251 | return true; |
3252 | } |
3253 | |
3254 | |
3255 | |
3256 | |
3257 | |
3258 | |
3259 | |
3260 | |
3261 | bool |
3262 | Sema::IsQualificationConversion(QualType FromType, QualType ToType, |
3263 | bool CStyle, bool &ObjCLifetimeConversion) { |
3264 | FromType = Context.getCanonicalType(FromType); |
3265 | ToType = Context.getCanonicalType(ToType); |
3266 | ObjCLifetimeConversion = false; |
3267 | |
3268 | |
3269 | |
3270 | if (FromType.getUnqualifiedType() == ToType.getUnqualifiedType()) |
3271 | return false; |
3272 | |
3273 | |
3274 | |
3275 | |
3276 | bool PreviousToQualsIncludeConst = true; |
3277 | bool UnwrappedAnyPointer = false; |
3278 | while (Context.UnwrapSimilarTypes(FromType, ToType)) { |
3279 | if (!isQualificationConversionStep( |
3280 | FromType, ToType, CStyle, !UnwrappedAnyPointer, |
3281 | PreviousToQualsIncludeConst, ObjCLifetimeConversion)) |
3282 | return false; |
3283 | UnwrappedAnyPointer = true; |
3284 | } |
3285 | |
3286 | |
3287 | |
3288 | |
3289 | |
3290 | |
3291 | return UnwrappedAnyPointer && Context.hasSameUnqualifiedType(FromType,ToType); |
3292 | } |
3293 | |
3294 | |
3295 | |
3296 | |
3297 | |
3298 | |
3299 | static bool tryAtomicConversion(Sema &S, Expr *From, QualType ToType, |
3300 | bool InOverloadResolution, |
3301 | StandardConversionSequence &SCS, |
3302 | bool CStyle) { |
3303 | const AtomicType *ToAtomic = ToType->getAs<AtomicType>(); |
3304 | if (!ToAtomic) |
3305 | return false; |
3306 | |
3307 | StandardConversionSequence InnerSCS; |
3308 | if (!IsStandardConversion(S, From, ToAtomic->getValueType(), |
3309 | InOverloadResolution, InnerSCS, |
3310 | CStyle, false)) |
3311 | return false; |
3312 | |
3313 | SCS.Second = InnerSCS.Second; |
3314 | SCS.setToType(1, InnerSCS.getToType(1)); |
3315 | SCS.Third = InnerSCS.Third; |
3316 | SCS.QualificationIncludesObjCLifetime |
3317 | = InnerSCS.QualificationIncludesObjCLifetime; |
3318 | SCS.setToType(2, InnerSCS.getToType(2)); |
3319 | return true; |
3320 | } |
3321 | |
3322 | static bool isFirstArgumentCompatibleWithType(ASTContext &Context, |
3323 | CXXConstructorDecl *Constructor, |
3324 | QualType Type) { |
3325 | const auto *CtorType = Constructor->getType()->castAs<FunctionProtoType>(); |
3326 | if (CtorType->getNumParams() > 0) { |
3327 | QualType FirstArg = CtorType->getParamType(0); |
3328 | if (Context.hasSameUnqualifiedType(Type, FirstArg.getNonReferenceType())) |
3329 | return true; |
3330 | } |
3331 | return false; |
3332 | } |
3333 | |
3334 | static OverloadingResult |
3335 | IsInitializerListConstructorConversion(Sema &S, Expr *From, QualType ToType, |
3336 | CXXRecordDecl *To, |
3337 | UserDefinedConversionSequence &User, |
3338 | OverloadCandidateSet &CandidateSet, |
3339 | bool AllowExplicit) { |
3340 | CandidateSet.clear(OverloadCandidateSet::CSK_InitByUserDefinedConversion); |
3341 | for (auto *D : S.LookupConstructors(To)) { |
3342 | auto Info = getConstructorInfo(D); |
3343 | if (!Info) |
3344 | continue; |
3345 | |
3346 | bool Usable = !Info.Constructor->isInvalidDecl() && |
3347 | S.isInitListConstructor(Info.Constructor); |
3348 | if (Usable) { |
3349 | bool SuppressUserConversions = false; |
3350 | if (Info.ConstructorTmpl) |
3351 | S.AddTemplateOverloadCandidate(Info.ConstructorTmpl, Info.FoundDecl, |
3352 | nullptr, From, |
3353 | CandidateSet, SuppressUserConversions, |
3354 | false, |
3355 | AllowExplicit); |
3356 | else |
3357 | S.AddOverloadCandidate(Info.Constructor, Info.FoundDecl, From, |
3358 | CandidateSet, SuppressUserConversions, |
3359 | false, AllowExplicit); |
3360 | } |
3361 | } |
3362 | |
3363 | bool HadMultipleCandidates = (CandidateSet.size() > 1); |
3364 | |
3365 | OverloadCandidateSet::iterator Best; |
3366 | switch (auto Result = |
3367 | CandidateSet.BestViableFunction(S, From->getBeginLoc(), Best)) { |
3368 | case OR_Deleted: |
3369 | case OR_Success: { |
3370 | |
3371 | CXXConstructorDecl *Constructor = cast<CXXConstructorDecl>(Best->Function); |
3372 | QualType ThisType = Constructor->getThisType(); |
3373 | |
3374 | User.Before.setAsIdentityConversion(); |
3375 | User.HadMultipleCandidates = HadMultipleCandidates; |
3376 | User.ConversionFunction = Constructor; |
3377 | User.FoundConversionFunction = Best->FoundDecl; |
3378 | User.After.setAsIdentityConversion(); |
3379 | User.After.setFromType(ThisType->castAs<PointerType>()->getPointeeType()); |
3380 | User.After.setAllToTypes(ToType); |
3381 | return Result; |
3382 | } |
3383 | |
3384 | case OR_No_Viable_Function: |
3385 | return OR_No_Viable_Function; |
3386 | case OR_Ambiguous: |
3387 | return OR_Ambiguous; |
3388 | } |
3389 | |
3390 | llvm_unreachable("Invalid OverloadResult!"); |
3391 | } |
3392 | |
3393 | |
3394 | |
3395 | |
3396 | |
3397 | |
3398 | |
3399 | |
3400 | |
3401 | |
3402 | |
3403 | |
3404 | |
3405 | |
3406 | |
3407 | static OverloadingResult |
3408 | IsUserDefinedConversion(Sema &S, Expr *From, QualType ToType, |
3409 | UserDefinedConversionSequence &User, |
3410 | OverloadCandidateSet &CandidateSet, |
3411 | AllowedExplicit AllowExplicit, |
3412 | bool AllowObjCConversionOnExplicit) { |
3413 | assert(AllowExplicit != AllowedExplicit::None || |
3414 | !AllowObjCConversionOnExplicit); |
3415 | CandidateSet.clear(OverloadCandidateSet::CSK_InitByUserDefinedConversion); |
3416 | |
3417 | |
3418 | bool ConstructorsOnly = false; |
3419 | |
3420 | |
3421 | |
3422 | if (const RecordType *ToRecordType = ToType->getAs<RecordType>()) { |
3423 | |
3424 | |
3425 | |
3426 | |
3427 | |
3428 | |
3429 | |
3430 | |
3431 | if (S.Context.hasSameUnqualifiedType(ToType, From->getType()) || |
3432 | (From->getType()->getAs<RecordType>() && |
3433 | S.IsDerivedFrom(From->getBeginLoc(), From->getType(), ToType))) |
3434 | ConstructorsOnly = true; |
3435 | |
3436 | if (!S.isCompleteType(From->getExprLoc(), ToType)) { |
3437 | |
3438 | } else if (CXXRecordDecl *ToRecordDecl |
3439 | = dyn_cast<CXXRecordDecl>(ToRecordType->getDecl())) { |
3440 | |
3441 | Expr **Args = &From; |
3442 | unsigned NumArgs = 1; |
3443 | bool ListInitializing = false; |
3444 | if (InitListExpr *InitList = dyn_cast<InitListExpr>(From)) { |
3445 | |
3446 | OverloadingResult Result = IsInitializerListConstructorConversion( |
3447 | S, From, ToType, ToRecordDecl, User, CandidateSet, |
3448 | AllowExplicit == AllowedExplicit::All); |
3449 | if (Result != OR_No_Viable_Function) |
3450 | return Result; |
3451 | |
3452 | CandidateSet.clear( |
3453 | OverloadCandidateSet::CSK_InitByUserDefinedConversion); |
3454 | |
3455 | |
3456 | |
3457 | Args = InitList->getInits(); |
3458 | NumArgs = InitList->getNumInits(); |
3459 | ListInitializing = true; |
3460 | } |
3461 | |
3462 | for (auto *D : S.LookupConstructors(ToRecordDecl)) { |
3463 | auto Info = getConstructorInfo(D); |
3464 | if (!Info) |
3465 | continue; |
3466 | |
3467 | bool Usable = !Info.Constructor->isInvalidDecl(); |
3468 | if (!ListInitializing) |
3469 | Usable = Usable && Info.Constructor->isConvertingConstructor( |
3470 | true); |
3471 | if (Usable) { |
3472 | bool SuppressUserConversions = !ConstructorsOnly; |
3473 | |
3474 | |
3475 | |
3476 | |
3477 | |
3478 | |
3479 | |
3480 | if (SuppressUserConversions && ListInitializing) { |
3481 | SuppressUserConversions = |
3482 | NumArgs == 1 && isa<InitListExpr>(Args[0]) && |
3483 | isFirstArgumentCompatibleWithType(S.Context, Info.Constructor, |
3484 | ToType); |
3485 | } |
3486 | if (Info.ConstructorTmpl) |
3487 | S.AddTemplateOverloadCandidate( |
3488 | Info.ConstructorTmpl, Info.FoundDecl, |
3489 | nullptr, llvm::makeArrayRef(Args, NumArgs), |
3490 | CandidateSet, SuppressUserConversions, |
3491 | false, |
3492 | AllowExplicit == AllowedExplicit::All); |
3493 | else |
3494 | |
3495 | |
3496 | S.AddOverloadCandidate(Info.Constructor, Info.FoundDecl, |
3497 | llvm::makeArrayRef(Args, NumArgs), |
3498 | CandidateSet, SuppressUserConversions, |
3499 | false, |
3500 | AllowExplicit == AllowedExplicit::All); |
3501 | } |
3502 | } |
3503 | } |
3504 | } |
3505 | |
3506 | |
3507 | if (ConstructorsOnly || isa<InitListExpr>(From)) { |
3508 | } else if (!S.isCompleteType(From->getBeginLoc(), From->getType())) { |
3509 | |
3510 | } else if (const RecordType *FromRecordType = |
3511 | From->getType()->getAs<RecordType>()) { |
3512 | if (CXXRecordDecl *FromRecordDecl |
3513 | = dyn_cast<CXXRecordDecl>(FromRecordType->getDecl())) { |
3514 | |
3515 | const auto &Conversions = FromRecordDecl->getVisibleConversionFunctions(); |
3516 | for (auto I = Conversions.begin(), E = Conversions.end(); I != E; ++I) { |
3517 | DeclAccessPair FoundDecl = I.getPair(); |
3518 | NamedDecl *D = FoundDecl.getDecl(); |
3519 | CXXRecordDecl *ActingContext = cast<CXXRecordDecl>(D->getDeclContext()); |
3520 | if (isa<UsingShadowDecl>(D)) |
3521 | D = cast<UsingShadowDecl>(D)->getTargetDecl(); |
3522 | |
3523 | CXXConversionDecl *Conv; |
3524 | FunctionTemplateDecl *ConvTemplate; |
3525 | if ((ConvTemplate = dyn_cast<FunctionTemplateDecl>(D))) |
3526 | Conv = cast<CXXConversionDecl>(ConvTemplate->getTemplatedDecl()); |
3527 | else |
3528 | Conv = cast<CXXConversionDecl>(D); |
3529 | |
3530 | if (ConvTemplate) |
3531 | S.AddTemplateConversionCandidate( |
3532 | ConvTemplate, FoundDecl, ActingContext, From, ToType, |
3533 | CandidateSet, AllowObjCConversionOnExplicit, |
3534 | AllowExplicit != AllowedExplicit::None); |
3535 | else |
3536 | S.AddConversionCandidate(Conv, FoundDecl, ActingContext, From, ToType, |
3537 | CandidateSet, AllowObjCConversionOnExplicit, |
3538 | AllowExplicit != AllowedExplicit::None); |
3539 | } |
3540 | } |
3541 | } |
3542 | |
3543 | bool HadMultipleCandidates = (CandidateSet.size() > 1); |
3544 | |
3545 | OverloadCandidateSet::iterator Best; |
3546 | switch (auto Result = |
3547 | CandidateSet.BestViableFunction(S, From->getBeginLoc(), Best)) { |
3548 | case OR_Success: |
3549 | case OR_Deleted: |
3550 | |
3551 | if (CXXConstructorDecl *Constructor |
3552 | = dyn_cast<CXXConstructorDecl>(Best->Function)) { |
3553 | |
3554 | |
3555 | |
3556 | |
3557 | |
3558 | |
3559 | QualType ThisType = Constructor->getThisType(); |
3560 | if (isa<InitListExpr>(From)) { |
3561 | |
3562 | User.Before.setAsIdentityConversion(); |
3563 | } else { |
3564 | if (Best->Conversions[0].isEllipsis()) |
3565 | User.EllipsisConversion = true; |
3566 | else { |
3567 | User.Before = Best->Conversions[0].Standard; |
3568 | User.EllipsisConversion = false; |
3569 | } |
3570 | } |
3571 | User.HadMultipleCandidates = HadMultipleCandidates; |
3572 | User.ConversionFunction = Constructor; |
3573 | User.FoundConversionFunction = Best->FoundDecl; |
3574 | User.After.setAsIdentityConversion(); |
3575 | User.After.setFromType(ThisType->castAs<PointerType>()->getPointeeType()); |
3576 | User.After.setAllToTypes(ToType); |
3577 | return Result; |
3578 | } |
3579 | if (CXXConversionDecl *Conversion |
3580 | = dyn_cast<CXXConversionDecl>(Best->Function)) { |
3581 | |
3582 | |
3583 | |
3584 | |
3585 | |
3586 | |
3587 | User.Before = Best->Conversions[0].Standard; |
3588 | User.HadMultipleCandidates = HadMultipleCandidates; |
3589 | User.ConversionFunction = Conversion; |
3590 | User.FoundConversionFunction = Best->FoundDecl; |
3591 | User.EllipsisConversion = false; |
3592 | |
3593 | |
3594 | |
3595 | |
3596 | |
3597 | |
3598 | |
3599 | |
3600 | |
3601 | |
3602 | User.After = Best->FinalConversion; |
3603 | return Result; |
3604 | } |
3605 | llvm_unreachable("Not a constructor or conversion function?"); |
3606 | |
3607 | case OR_No_Viable_Function: |
3608 | return OR_No_Viable_Function; |
3609 | |
3610 | case OR_Ambiguous: |
3611 | return OR_Ambiguous; |
3612 | } |
3613 | |
3614 | llvm_unreachable("Invalid OverloadResult!"); |
3615 | } |
3616 | |
3617 | bool |
3618 | Sema::DiagnoseMultipleUserDefinedConversion(Expr *From, QualType ToType) { |
3619 | ImplicitConversionSequence ICS; |
3620 | OverloadCandidateSet CandidateSet(From->getExprLoc(), |
3621 | OverloadCandidateSet::CSK_Normal); |
3622 | OverloadingResult OvResult = |
3623 | IsUserDefinedConversion(*this, From, ToType, ICS.UserDefined, |
3624 | CandidateSet, AllowedExplicit::None, false); |
3625 | |
3626 | if (!(OvResult == OR_Ambiguous || |
3627 | (OvResult == OR_No_Viable_Function && !CandidateSet.empty()))) |
3628 | return false; |
3629 | |
3630 | auto Cands = CandidateSet.CompleteCandidates( |
3631 | *this, |
3632 | OvResult == OR_Ambiguous ? OCD_AmbiguousCandidates : OCD_AllCandidates, |
3633 | From); |
3634 | if (OvResult == OR_Ambiguous) |
3635 | Diag(From->getBeginLoc(), diag::err_typecheck_ambiguous_condition) |
3636 | << From->getType() << ToType << From->getSourceRange(); |
3637 | else { |
3638 | if (!RequireCompleteType(From->getBeginLoc(), ToType, |
3639 | diag::err_typecheck_nonviable_condition_incomplete, |
3640 | From->getType(), From->getSourceRange())) |
3641 | Diag(From->getBeginLoc(), diag::err_typecheck_nonviable_condition) |
3642 | << false << From->getType() << From->getSourceRange() << ToType; |
3643 | } |
3644 | |
3645 | CandidateSet.NoteCandidates( |
3646 | *this, From, Cands); |
3647 | return true; |
3648 | } |
3649 | |
3650 | |
3651 | |
3652 | static const FunctionType * |
3653 | getConversionOpReturnTyAsFunction(CXXConversionDecl *Conv) { |
3654 | const FunctionType *ConvFuncTy = Conv->getType()->castAs<FunctionType>(); |
3655 | const PointerType *RetPtrTy = |
3656 | ConvFuncTy->getReturnType()->getAs<PointerType>(); |
3657 | |
3658 | if (!RetPtrTy) |
3659 | return nullptr; |
3660 | |
3661 | return RetPtrTy->getPointeeType()->getAs<FunctionType>(); |
3662 | } |
3663 | |
3664 | |
3665 | |
3666 | |
3667 | static ImplicitConversionSequence::CompareKind |
3668 | compareConversionFunctions(Sema &S, FunctionDecl *Function1, |
3669 | FunctionDecl *Function2) { |
3670 | CXXConversionDecl *Conv1 = dyn_cast_or_null<CXXConversionDecl>(Function1); |
3671 | CXXConversionDecl *Conv2 = dyn_cast_or_null<CXXConversionDecl>(Function2); |
3672 | if (!Conv1 || !Conv2) |
3673 | return ImplicitConversionSequence::Indistinguishable; |
3674 | |
3675 | if (!Conv1->getParent()->isLambda() || !Conv2->getParent()->isLambda()) |
3676 | return ImplicitConversionSequence::Indistinguishable; |
3677 | |
3678 | |
3679 | |
3680 | |
3681 | |
3682 | |
3683 | |
3684 | if (S.getLangOpts().ObjC && S.getLangOpts().CPlusPlus11) { |
3685 | bool Block1 = Conv1->getConversionType()->isBlockPointerType(); |
3686 | bool Block2 = Conv2->getConversionType()->isBlockPointerType(); |
3687 | if (Block1 != Block2) |
3688 | return Block1 ? ImplicitConversionSequence::Worse |
3689 | : ImplicitConversionSequence::Better; |
3690 | } |
3691 | |
3692 | |
3693 | |
3694 | |
3695 | |
3696 | |
3697 | const FunctionType *Conv1FuncRet = getConversionOpReturnTyAsFunction(Conv1); |
3698 | const FunctionType *Conv2FuncRet = getConversionOpReturnTyAsFunction(Conv2); |
3699 | |
3700 | if (Conv1FuncRet && Conv2FuncRet && |
3701 | Conv1FuncRet->getCallConv() != Conv2FuncRet->getCallConv()) { |
3702 | CallingConv Conv1CC = Conv1FuncRet->getCallConv(); |
3703 | CallingConv Conv2CC = Conv2FuncRet->getCallConv(); |
3704 | |
3705 | CXXMethodDecl *CallOp = Conv2->getParent()->getLambdaCallOperator(); |
3706 | const FunctionProtoType *CallOpProto = |
3707 | CallOp->getType()->getAs<FunctionProtoType>(); |
3708 | |
3709 | CallingConv CallOpCC = |
3710 | CallOp->getType()->castAs<FunctionType>()->getCallConv(); |
3711 | CallingConv DefaultFree = S.Context.getDefaultCallingConvention( |
3712 | CallOpProto->isVariadic(), false); |
3713 | CallingConv DefaultMember = S.Context.getDefaultCallingConvention( |
3714 | CallOpProto->isVariadic(), true); |
3715 | |
3716 | CallingConv PrefOrder[] = {DefaultFree, DefaultMember, CallOpCC}; |
3717 | for (CallingConv CC : PrefOrder) { |
3718 | if (Conv1CC == CC) |
3719 | return ImplicitConversionSequence::Better; |
3720 | if (Conv2CC == CC) |
3721 | return ImplicitConversionSequence::Worse; |
3722 | } |
3723 | } |
3724 | |
3725 | return ImplicitConversionSequence::Indistinguishable; |
3726 | } |
3727 | |
3728 | static bool hasDeprecatedStringLiteralToCharPtrConversion( |
3729 | const ImplicitConversionSequence &ICS) { |
3730 | return (ICS.isStandard() && ICS.Standard.DeprecatedStringLiteralToCharPtr) || |
3731 | (ICS.isUserDefined() && |
3732 | ICS.UserDefined.Before.DeprecatedStringLiteralToCharPtr); |
3733 | } |
3734 | |
3735 | |
3736 | |
3737 | |
3738 | static ImplicitConversionSequence::CompareKind |
3739 | CompareImplicitConversionSequences(Sema &S, SourceLocation Loc, |
3740 | const ImplicitConversionSequence& ICS1, |
3741 | const ImplicitConversionSequence& ICS2) |
3742 | { |
3743 | |
3744 | |
3745 | |
3746 | |
3747 | |
3748 | |
3749 | |
3750 | |
3751 | |
3752 | |
3753 | |
3754 | |
3755 | |
3756 | |
3757 | |
3758 | |
3759 | |
3760 | |
3761 | |
3762 | |
3763 | |
3764 | |
3765 | |
3766 | |
3767 | |
3768 | |
3769 | |
3770 | |
3771 | |
3772 | |
3773 | |
3774 | |
3775 | |
3776 | if (S.getLangOpts().CPlusPlus11 && !S.getLangOpts().WritableStrings && |
3777 | hasDeprecatedStringLiteralToCharPtrConversion(ICS1) != |
3778 | hasDeprecatedStringLiteralToCharPtrConversion(ICS2)) |
3779 | return hasDeprecatedStringLiteralToCharPtrConversion(ICS1) |
3780 | ? ImplicitConversionSequence::Worse |
3781 | : ImplicitConversionSequence::Better; |
3782 | |
3783 | if (ICS1.getKindRank() < ICS2.getKindRank()) |
3784 | return ImplicitConversionSequence::Better; |
3785 | if (ICS2.getKindRank() < ICS1.getKindRank()) |
3786 | return ImplicitConversionSequence::Worse; |
3787 | |
3788 | |
3789 | |
3790 | if (ICS1.getKind() != ICS2.getKind()) |
3791 | return ImplicitConversionSequence::Indistinguishable; |
3792 | |
3793 | ImplicitConversionSequence::CompareKind Result = |
3794 | ImplicitConversionSequence::Indistinguishable; |
3795 | |
3796 | |
3797 | |
3798 | |
3799 | |
3800 | |
3801 | |
3802 | |
3803 | |
3804 | |
3805 | |
3806 | |
3807 | if (!ICS1.isBad()) { |
3808 | if (ICS1.isStdInitializerListElement() && |
3809 | !ICS2.isStdInitializerListElement()) |
3810 | return ImplicitConversionSequence::Better; |
3811 | if (!ICS1.isStdInitializerListElement() && |
3812 | ICS2.isStdInitializerListElement()) |
3813 | return ImplicitConversionSequence::Worse; |
3814 | } |
3815 | |
3816 | if (ICS1.isStandard()) |
3817 | |
3818 | |
3819 | Result = CompareStandardConversionSequences(S, Loc, |
3820 | ICS1.Standard, ICS2.Standard); |
3821 | else if (ICS1.isUserDefined()) { |
3822 | |
3823 | |
3824 | |
3825 | |
3826 | |
3827 | |
3828 | if (ICS1.UserDefined.ConversionFunction == |
3829 | ICS2.UserDefined.ConversionFunction) |
3830 | Result = CompareStandardConversionSequences(S, Loc, |
3831 | ICS1.UserDefined.After, |
3832 | ICS2.UserDefined.After); |
3833 | else |
3834 | Result = compareConversionFunctions(S, |
3835 | ICS1.UserDefined.ConversionFunction, |
3836 | ICS2.UserDefined.ConversionFunction); |
3837 | } |
3838 | |
3839 | return Result; |
3840 | } |
3841 | |
3842 | |
3843 | |
3844 | static ImplicitConversionSequence::CompareKind |
3845 | compareStandardConversionSubsets(ASTContext &Context, |
3846 | const StandardConversionSequence& SCS1, |
3847 | const StandardConversionSequence& SCS2) { |
3848 | ImplicitConversionSequence::CompareKind Result |
3849 | = ImplicitConversionSequence::Indistinguishable; |
3850 | |
3851 | |
3852 | |
3853 | if (SCS1.isIdentityConversion() && !SCS2.isIdentityConversion()) |
3854 | return ImplicitConversionSequence::Better; |
3855 | else if (!SCS1.isIdentityConversion() && SCS2.isIdentityConversion()) |
3856 | return ImplicitConversionSequence::Worse; |
3857 | |
3858 | if (SCS1.Second != SCS2.Second) { |
3859 | if (SCS1.Second == ICK_Identity) |
3860 | Result = ImplicitConversionSequence::Better; |
3861 | else if (SCS2.Second == ICK_Identity) |
3862 | Result = ImplicitConversionSequence::Worse; |
3863 | else |
3864 | return ImplicitConversionSequence::Indistinguishable; |
3865 | } else if (!Context.hasSimilarType(SCS1.getToType(1), SCS2.getToType(1))) |
3866 | return ImplicitConversionSequence::Indistinguishable; |
3867 | |
3868 | if (SCS1.Third == SCS2.Third) { |
3869 | return Context.hasSameType(SCS1.getToType(2), SCS2.getToType(2))? Result |
3870 | : ImplicitConversionSequence::Indistinguishable; |
3871 | } |
3872 | |
3873 | if (SCS1.Third == ICK_Identity) |
3874 | return Result == ImplicitConversionSequence::Worse |
3875 | ? ImplicitConversionSequence::Indistinguishable |
3876 | : ImplicitConversionSequence::Better; |
3877 | |
3878 | if (SCS2.Third == ICK_Identity) |
3879 | return Result == ImplicitConversionSequence::Better |
3880 | ? ImplicitConversionSequence::Indistinguishable |
3881 | : ImplicitConversionSequence::Worse; |
3882 | |
3883 | return ImplicitConversionSequence::Indistinguishable; |
3884 | } |
3885 | |
3886 | |
3887 | |
3888 | static bool |
3889 | isBetterReferenceBindingKind(const StandardConversionSequence &SCS1, |
3890 | const StandardConversionSequence &SCS2) { |
3891 | |
3892 | |
3893 | |
3894 | |
3895 | |
3896 | |
3897 | |
3898 | |
3899 | |
3900 | |
3901 | |
3902 | |
3903 | |
3904 | if (SCS1.BindsImplicitObjectArgumentWithoutRefQualifier || |
3905 | SCS2.BindsImplicitObjectArgumentWithoutRefQualifier) |
3906 | return false; |
3907 | |
3908 | return (!SCS1.IsLvalueReference && SCS1.BindsToRvalue && |
3909 | SCS2.IsLvalueReference) || |
3910 | (SCS1.IsLvalueReference && SCS1.BindsToFunctionLvalue && |
3911 | !SCS2.IsLvalueReference && SCS2.BindsToFunctionLvalue); |
3912 | } |
3913 | |
3914 | enum class FixedEnumPromotion { |
3915 | None, |
3916 | ToUnderlyingType, |
3917 | ToPromotedUnderlyingType |
3918 | }; |
3919 | |
3920 | |
3921 | static FixedEnumPromotion |
3922 | getFixedEnumPromtion(Sema &S, const StandardConversionSequence &SCS) { |
3923 | |
3924 | if (SCS.Second != ICK_Integral_Promotion) |
3925 | return FixedEnumPromotion::None; |
3926 | |
3927 | QualType FromType = SCS.getFromType(); |
3928 | if (!FromType->isEnumeralType()) |
3929 | return FixedEnumPromotion::None; |
3930 | |
3931 | EnumDecl *Enum = FromType->castAs<EnumType>()->getDecl(); |
3932 | if (!Enum->isFixed()) |
3933 | return FixedEnumPromotion::None; |
3934 | |
3935 | QualType UnderlyingType = Enum->getIntegerType(); |
3936 | if (S.Context.hasSameType(SCS.getToType(1), UnderlyingType)) |
3937 | return FixedEnumPromotion::ToUnderlyingType; |
3938 | |
3939 | return FixedEnumPromotion::ToPromotedUnderlyingType; |
3940 | } |
3941 | |
3942 | |
3943 | |
3944 | |
3945 | static ImplicitConversionSequence::CompareKind |
3946 | CompareStandardConversionSequences(Sema &S, SourceLocation Loc, |
3947 | const StandardConversionSequence& SCS1, |
3948 | const StandardConversionSequence& SCS2) |
3949 | { |
3950 | |
3951 | |
3952 | |
3953 | |
3954 | |
3955 | |
3956 | |
3957 | |
3958 | if (ImplicitConversionSequence::CompareKind CK |
3959 | = compareStandardConversionSubsets(S.Context, SCS1, SCS2)) |
3960 | return CK; |
3961 | |
3962 | |
3963 | |
3964 | ImplicitConversionRank Rank1 = SCS1.getRank(); |
3965 | ImplicitConversionRank Rank2 = SCS2.getRank(); |
3966 | if (Rank1 < Rank2) |
3967 | return ImplicitConversionSequence::Better; |
3968 | else if (Rank2 < Rank1) |
3969 | return ImplicitConversionSequence::Worse; |
3970 | |
3971 | |
3972 | |
3973 | |
3974 | |
3975 | |
3976 | |
3977 | |
3978 | if (SCS1.isPointerConversionToBool() != SCS2.isPointerConversionToBool()) |
3979 | return SCS2.isPointerConversionToBool() |
3980 | ? ImplicitConversionSequence::Better |
3981 | : ImplicitConversionSequence::Worse; |
3982 | |
3983 | |
3984 | |
3985 | |
3986 | |
3987 | |
3988 | |
3989 | FixedEnumPromotion FEP1 = getFixedEnumPromtion(S, SCS1); |
3990 | FixedEnumPromotion FEP2 = getFixedEnumPromtion(S, SCS2); |
3991 | if (FEP1 != FixedEnumPromotion::None && FEP2 != FixedEnumPromotion::None && |
3992 | FEP1 != FEP2) |
3993 | return FEP1 == FixedEnumPromotion::ToUnderlyingType |
3994 | ? ImplicitConversionSequence::Better |
3995 | : ImplicitConversionSequence::Worse; |
3996 | |
3997 | |
3998 | |
3999 | |
4000 | |
4001 | |
4002 | |
4003 | bool SCS1ConvertsToVoid |
4004 | = SCS1.isPointerConversionToVoidPointer(S.Context); |
4005 | bool SCS2ConvertsToVoid |
4006 | = SCS2.isPointerConversionToVoidPointer(S.Context); |
4007 | if (SCS1ConvertsToVoid != SCS2ConvertsToVoid) { |
4008 | |
4009 | |
4010 | return SCS2ConvertsToVoid ? ImplicitConversionSequence::Better |
4011 | : ImplicitConversionSequence::Worse; |
4012 | } else if (!SCS1ConvertsToVoid && !SCS2ConvertsToVoid) { |
4013 | |
4014 | |
4015 | if (ImplicitConversionSequence::CompareKind DerivedCK |
4016 | = CompareDerivedToBaseConversions(S, Loc, SCS1, SCS2)) |
4017 | return DerivedCK; |
4018 | } else if (SCS1ConvertsToVoid && SCS2ConvertsToVoid && |
4019 | !S.Context.hasSameType(SCS1.getFromType(), SCS2.getFromType())) { |
4020 | |
4021 | |
4022 | |
4023 | QualType FromType1 = SCS1.getFromType(); |
4024 | QualType FromType2 = SCS2.getFromType(); |
4025 | |
4026 | |
4027 | |
4028 | if (SCS1.First == ICK_Array_To_Pointer) |
4029 | FromType1 = S.Context.getArrayDecayedType(FromType1); |
4030 | if (SCS2.First == ICK_Array_To_Pointer) |
4031 | FromType2 = S.Context.getArrayDecayedType(FromType2); |
4032 | |
4033 | QualType FromPointee1 = FromType1->getPointeeType().getUnqualifiedType(); |
4034 | QualType FromPointee2 = FromType2->getPointeeType().getUnqualifiedType(); |
4035 | |
4036 | if (S.IsDerivedFrom(Loc, FromPointee2, FromPointee1)) |
4037 | return ImplicitConversionSequence::Better; |
4038 | else if (S.IsDerivedFrom(Loc, FromPointee1, FromPointee2)) |
4039 | return ImplicitConversionSequence::Worse; |
4040 | |
4041 | |
4042 | |
4043 | const ObjCObjectPointerType* FromObjCPtr1 |
4044 | = FromType1->getAs<ObjCObjectPointerType>(); |
4045 | const ObjCObjectPointerType* FromObjCPtr2 |
4046 | = FromType2->getAs<ObjCObjectPointerType>(); |
4047 | if (FromObjCPtr1 && FromObjCPtr2) { |
4048 | bool AssignLeft = S.Context.canAssignObjCInterfaces(FromObjCPtr1, |
4049 | FromObjCPtr2); |
4050 | bool AssignRight = S.Context.canAssignObjCInterfaces(FromObjCPtr2, |
4051 | FromObjCPtr1); |
4052 | if (AssignLeft != AssignRight) { |
4053 | return AssignLeft? ImplicitConversionSequence::Better |
4054 | : ImplicitConversionSequence::Worse; |
4055 | } |
4056 | } |
4057 | } |
4058 | |
4059 | if (SCS1.ReferenceBinding && SCS2.ReferenceBinding) { |
4060 | |
4061 | if (isBetterReferenceBindingKind(SCS1, SCS2)) |
4062 | return ImplicitConversionSequence::Better; |
4063 | else if (isBetterReferenceBindingKind(SCS2, SCS1)) |
4064 | return ImplicitConversionSequence::Worse; |
4065 | } |
4066 | |
4067 | |
4068 | |
4069 | if (ImplicitConversionSequence::CompareKind QualCK |
4070 | = CompareQualificationConversions(S, SCS1, SCS2)) |
4071 | return QualCK; |
4072 | |
4073 | if (SCS1.ReferenceBinding && SCS2.ReferenceBinding) { |
4074 | |
4075 | |
4076 | |
4077 | |
4078 | |
4079 | |
4080 | QualType T1 = SCS1.getToType(2); |
4081 | QualType T2 = SCS2.getToType(2); |
4082 | T1 = S.Context.getCanonicalType(T1); |
4083 | T2 = S.Context.getCanonicalType(T2); |
4084 | Qualifiers T1Quals, T2Quals; |
4085 | QualType UnqualT1 = S.Context.getUnqualifiedArrayType(T1, T1Quals); |
4086 | QualType UnqualT2 = S.Context.getUnqualifiedArrayType(T2, T2Quals); |
4087 | if (UnqualT1 == UnqualT2) { |
4088 | |
4089 | |
4090 | if (SCS1.ObjCLifetimeConversionBinding != |
4091 | SCS2.ObjCLifetimeConversionBinding) { |
4092 | return SCS1.ObjCLifetimeConversionBinding |
4093 | ? ImplicitConversionSequence::Worse |
4094 | : ImplicitConversionSequence::Better; |
4095 | } |
4096 | |
4097 | |
4098 | |
4099 | if (isa<ArrayType>(T1) && T1Quals) |
4100 | T1 = S.Context.getQualifiedType(UnqualT1, T1Quals); |
4101 | if (isa<ArrayType>(T2) && T2Quals) |
4102 | T2 = S.Context.getQualifiedType(UnqualT2, T2Quals); |
4103 | if (T2.isMoreQualifiedThan(T1)) |
4104 | return ImplicitConversionSequence::Better; |
4105 | if (T1.isMoreQualifiedThan(T2)) |
4106 | return ImplicitConversionSequence::Worse; |
4107 | } |
4108 | } |
4109 | |
4110 | |
4111 | |
4112 | |
4113 | |
4114 | |
4115 | |
4116 | |
4117 | |
4118 | |
4119 | |
4120 | |
4121 | |
4122 | if (S.getLangOpts().MSVCCompat && |
4123 | !S.getLangOpts().isCompatibleWithMSVC(LangOptions::MSVC2019_8) && |
4124 | SCS1.Second == ICK_Integral_Conversion && |
4125 | SCS2.Second == ICK_Floating_Integral && |
4126 | S.Context.getTypeSize(SCS1.getFromType()) == |
4127 | S.Context.getTypeSize(SCS1.getToType(2))) |
4128 | return ImplicitConversionSequence::Better; |
4129 | |
4130 | |
4131 | |
4132 | |
4133 | |
4134 | |
4135 | |
4136 | |
4137 | |
4138 | |
4139 | |
4140 | |
4141 | |
4142 | if (SCS1.Second == ICK_Vector_Conversion && |
4143 | SCS2.Second == ICK_Vector_Conversion) { |
4144 | bool SCS1IsCompatibleVectorConversion = S.Context.areCompatibleVectorTypes( |
4145 | SCS1.getFromType(), SCS1.getToType(2)); |
4146 | bool SCS2IsCompatibleVectorConversion = S.Context.areCompatibleVectorTypes( |
4147 | SCS2.getFromType(), SCS2.getToType(2)); |
4148 | |
4149 | if (SCS1IsCompatibleVectorConversion != SCS2IsCompatibleVectorConversion) |
4150 | return SCS1IsCompatibleVectorConversion |
4151 | ? ImplicitConversionSequence::Better |
4152 | : ImplicitConversionSequence::Worse; |
4153 | } |
4154 | |
4155 | if (SCS1.Second == ICK_SVE_Vector_Conversion && |
4156 | SCS2.Second == ICK_SVE_Vector_Conversion) { |
4157 | bool SCS1IsCompatibleSVEVectorConversion = |
4158 | S.Context.areCompatibleSveTypes(SCS1.getFromType(), SCS1.getToType(2)); |
4159 | bool SCS2IsCompatibleSVEVectorConversion = |
4160 | S.Context.areCompatibleSveTypes(SCS2.getFromType(), SCS2.getToType(2)); |
4161 | |
4162 | if (SCS1IsCompatibleSVEVectorConversion != |
4163 | SCS2IsCompatibleSVEVectorConversion) |
4164 | return SCS1IsCompatibleSVEVectorConversion |
4165 | ? ImplicitConversionSequence::Better |
4166 | : ImplicitConversionSequence::Worse; |
4167 | } |
4168 | |
4169 | return ImplicitConversionSequence::Indistinguishable; |
4170 | } |
4171 | |
4172 | |
4173 | |
4174 | |
4175 | static ImplicitConversionSequence::CompareKind |
4176 | CompareQualificationConversions(Sema &S, |
4177 | const StandardConversionSequence& SCS1, |
4178 | const StandardConversionSequence& SCS2) { |
4179 | |
4180 | |
4181 | |
4182 | |
4183 | |
4184 | |
4185 | if (SCS1.First != SCS2.First || SCS1.Second != SCS2.Second || |
4186 | SCS1.Third != SCS2.Third || SCS1.Third != ICK_Qualification) |
4187 | return ImplicitConversionSequence::Indistinguishable; |
4188 | |
4189 | |
4190 | |
4191 | QualType T1 = SCS1.getToType(2); |
4192 | QualType T2 = SCS2.getToType(2); |
4193 | T1 = S.Context.getCanonicalType(T1); |
4194 | T2 = S.Context.getCanonicalType(T2); |
4195 | assert(!T1->isReferenceType() && !T2->isReferenceType()); |
4196 | Qualifiers T1Quals, T2Quals; |
4197 | QualType UnqualT1 = S.Context.getUnqualifiedArrayType(T1, T1Quals); |
4198 | QualType UnqualT2 = S.Context.getUnqualifiedArrayType(T2, T2Quals); |
4199 | |
4200 | |
4201 | |
4202 | if (UnqualT1 == UnqualT2) |
4203 | return ImplicitConversionSequence::Indistinguishable; |
4204 | |
4205 | ImplicitConversionSequence::CompareKind Result |
4206 | = ImplicitConversionSequence::Indistinguishable; |
4207 | |
4208 | |
4209 | |
4210 | |
4211 | if (SCS1.QualificationIncludesObjCLifetime != |
4212 | SCS2.QualificationIncludesObjCLifetime) { |
4213 | Result = SCS1.QualificationIncludesObjCLifetime |
4214 | ? ImplicitConversionSequence::Worse |
4215 | : ImplicitConversionSequence::Better; |
4216 | } |
4217 | |
4218 | while (S.Context.UnwrapSimilarTypes(T1, T2)) { |
4219 | |
4220 | |
4221 | |
4222 | |
4223 | |
4224 | |
4225 | |
4226 | |
4227 | if (T1.getQualifiers().withoutObjCLifetime() == |
4228 | T2.getQualifiers().withoutObjCLifetime()) |
4229 | |
4230 | |
4231 | |
4232 | |
4233 | ; |
4234 | else if (T2.isMoreQualifiedThan(T1)) { |
4235 | |
4236 | if (Result == ImplicitConversionSequence::Worse) |
4237 | |
4238 | |
4239 | return ImplicitConversionSequence::Indistinguishable; |
4240 | |
4241 | Result = ImplicitConversionSequence::Better; |
4242 | } else if (T1.isMoreQualifiedThan(T2)) { |
4243 | |
4244 | if (Result == ImplicitConversionSequence::Better) |
4245 | |
4246 | |
4247 | return ImplicitConversionSequence::Indistinguishable; |
4248 | |
4249 | Result = ImplicitConversionSequence::Worse; |
4250 | } else { |
4251 | |
4252 | return ImplicitConversionSequence::Indistinguishable; |
4253 | } |
4254 | |
4255 | |
4256 | if (S.Context.hasSameUnqualifiedType(T1, T2)) |
4257 | break; |
4258 | } |
4259 | |
4260 | |
4261 | |
4262 | switch (Result) { |
4263 | case ImplicitConversionSequence::Better: |
4264 | if (SCS1.DeprecatedStringLiteralToCharPtr) |
4265 | Result = ImplicitConversionSequence::Indistinguishable; |
4266 | break; |
4267 | |
4268 | case ImplicitConversionSequence::Indistinguishable: |
4269 | break; |
4270 | |
4271 | case ImplicitConversionSequence::Worse: |
4272 | if (SCS2.DeprecatedStringLiteralToCharPtr) |
4273 | Result = ImplicitConversionSequence::Indistinguishable; |
4274 | break; |
4275 | } |
4276 | |
4277 | return Result; |
4278 | } |
4279 | |
4280 | |
4281 | |
4282 | |
4283 | |
4284 | |
4285 | static ImplicitConversionSequence::CompareKind |
4286 | CompareDerivedToBaseConversions(Sema &S, SourceLocation Loc, |
4287 | const StandardConversionSequence& SCS1, |
4288 | const StandardConversionSequence& SCS2) { |
4289 | QualType FromType1 = SCS1.getFromType(); |
4290 | QualType ToType1 = SCS1.getToType(1); |
4291 | QualType FromType2 = SCS2.getFromType(); |
4292 | QualType ToType2 = SCS2.getToType(1); |
4293 | |
4294 | |
4295 | |
4296 | if (SCS1.First == ICK_Array_To_Pointer) |
4297 | FromType1 = S.Context.getArrayDecayedType(FromType1); |
4298 | if (SCS2.First == ICK_Array_To_Pointer) |
4299 | FromType2 = S.Context.getArrayDecayedType(FromType2); |
4300 | |
4301 | |
4302 | FromType1 = S.Context.getCanonicalType(FromType1); |
4303 | ToType1 = S.Context.getCanonicalType(ToType1); |
4304 | FromType2 = S.Context.getCanonicalType(FromType2); |
4305 | ToType2 = S.Context.getCanonicalType(ToType2); |
4306 | |
4307 | |
4308 | |
4309 | |
4310 | |
4311 | |
4312 | |
4313 | if (SCS1.Second == ICK_Pointer_Conversion && |
4314 | SCS2.Second == ICK_Pointer_Conversion && |
4315 | |
4316 | FromType1->isPointerType() && FromType2->isPointerType() && |
4317 | ToType1->isPointerType() && ToType2->isPointerType()) { |
4318 | QualType FromPointee1 = |
4319 | FromType1->castAs<PointerType>()->getPointeeType().getUnqualifiedType(); |
4320 | QualType ToPointee1 = |
4321 | ToType1->castAs<PointerType>()->getPointeeType().getUnqualifiedType(); |
4322 | QualType FromPointee2 = |
4323 | FromType2->castAs<PointerType>()->getPointeeType().getUnqualifiedType(); |
4324 | QualType ToPointee2 = |
4325 | ToType2->castAs<PointerType>()->getPointeeType().getUnqualifiedType(); |
4326 | |
4327 | |
4328 | if (FromPointee1 == FromPointee2 && ToPointee1 != ToPointee2) { |
4329 | if (S.IsDerivedFrom(Loc, ToPointee1, ToPointee2)) |
4330 | return ImplicitConversionSequence::Better; |
4331 | else if (S.IsDerivedFrom(Loc, ToPointee2, ToPointee1)) |
4332 | return ImplicitConversionSequence::Worse; |
4333 | } |
4334 | |
4335 | |
4336 | if (FromPointee1 != FromPointee2 && ToPointee1 == ToPointee2) { |
4337 | if (S.IsDerivedFrom(Loc, FromPointee2, FromPointee1)) |
4338 | return ImplicitConversionSequence::Better; |
4339 | else if (S.IsDerivedFrom(Loc, FromPointee1, FromPointee2)) |
4340 | return ImplicitConversionSequence::Worse; |
4341 | } |
4342 | } else if (SCS1.Second == ICK_Pointer_Conversion && |
4343 | SCS2.Second == ICK_Pointer_Conversion) { |
4344 | const ObjCObjectPointerType *FromPtr1 |
4345 | = FromType1->getAs<ObjCObjectPointerType>(); |
4346 | const ObjCObjectPointerType *FromPtr2 |
4347 | = FromType2->getAs<ObjCObjectPointerType>(); |
4348 | const ObjCObjectPointerType *ToPtr1 |
4349 | = ToType1->getAs<ObjCObjectPointerType>(); |
4350 | const ObjCObjectPointerType *ToPtr2 |
4351 | = ToType2->getAs<ObjCObjectPointerType>(); |
4352 | |
4353 | if (FromPtr1 && FromPtr2 && ToPtr1 && ToPtr2) { |
4354 | |
4355 | |
4356 | |
4357 | |
4358 | bool FromAssignLeft |
4359 | = S.Context.canAssignObjCInterfaces(FromPtr1, FromPtr2); |
4360 | bool FromAssignRight |
4361 | = S.Context.canAssignObjCInterfaces(FromPtr2, FromPtr1); |
4362 | bool ToAssignLeft |
4363 | = S.Context.canAssignObjCInterfaces(ToPtr1, ToPtr2); |
4364 | bool ToAssignRight |
4365 | = S.Context.canAssignObjCInterfaces(ToPtr2, ToPtr1); |
4366 | |
4367 | |
4368 | |
4369 | if (ToPtr1->isObjCIdType() && |
4370 | (ToPtr2->isObjCQualifiedIdType() || ToPtr2->getInterfaceDecl())) |
4371 | return ImplicitConversionSequence::Worse; |
4372 | if (ToPtr2->isObjCIdType() && |
4373 | (ToPtr1->isObjCQualifiedIdType() || ToPtr1->getInterfaceDecl())) |
4374 | return ImplicitConversionSequence::Better; |
4375 | |
4376 | |
4377 | |
4378 | if (ToPtr1->isObjCQualifiedIdType() && ToPtr2->getInterfaceDecl()) |
4379 | return ImplicitConversionSequence::Worse; |
4380 | if (ToPtr2->isObjCQualifiedIdType() && ToPtr1->getInterfaceDecl()) |
4381 | return ImplicitConversionSequence::Better; |
4382 | |
4383 | |
4384 | |
4385 | if (ToPtr1->isObjCClassType() && |
4386 | (ToPtr2->isObjCQualifiedClassType() || ToPtr2->getInterfaceDecl())) |
4387 | return ImplicitConversionSequence::Worse; |
4388 | if (ToPtr2->isObjCClassType() && |
4389 | (ToPtr1->isObjCQualifiedClassType() || ToPtr1->getInterfaceDecl())) |
4390 | return ImplicitConversionSequence::Better; |
4391 | |
4392 | |
4393 | |
4394 | if (ToPtr1->isObjCQualifiedClassType() && ToPtr2->getInterfaceDecl()) |
4395 | return ImplicitConversionSequence::Worse; |
4396 | if (ToPtr2->isObjCQualifiedClassType() && ToPtr1->getInterfaceDecl()) |
4397 | return ImplicitConversionSequence::Better; |
4398 | |
4399 | |
4400 | if (S.Context.hasSameType(FromType1, FromType2) && |
4401 | !FromPtr1->isObjCIdType() && !FromPtr1->isObjCClassType() && |
4402 | (ToAssignLeft != ToAssignRight)) { |
4403 | if (FromPtr1->isSpecialized()) { |
4404 | |
4405 | |
4406 | bool IsFirstSame = |
4407 | FromPtr1->getInterfaceDecl() == ToPtr1->getInterfaceDecl(); |
4408 | bool IsSecondSame = |
4409 | FromPtr1->getInterfaceDecl() == ToPtr2->getInterfaceDecl(); |
4410 | if (IsFirstSame) { |
4411 | if (!IsSecondSame) |
4412 | return ImplicitConversionSequence::Better; |
4413 | } else if (IsSecondSame) |
4414 | return ImplicitConversionSequence::Worse; |
4415 | } |
4416 | return ToAssignLeft? ImplicitConversionSequence::Worse |
4417 | : ImplicitConversionSequence::Better; |
4418 | } |
4419 | |
4420 | |
4421 | if (S.Context.hasSameUnqualifiedType(ToType1, ToType2) && |
4422 | (FromAssignLeft != FromAssignRight)) |
4423 | return FromAssignLeft? ImplicitConversionSequence::Better |
4424 | : ImplicitConversionSequence::Worse; |
4425 | } |
4426 | } |
4427 | |
4428 | |
4429 | if (SCS1.Second == ICK_Pointer_Member && SCS2.Second == ICK_Pointer_Member && |
4430 | FromType1->isMemberPointerType() && FromType2->isMemberPointerType() && |
4431 | ToType1->isMemberPointerType() && ToType2->isMemberPointerType()) { |
4432 | const auto *FromMemPointer1 = FromType1->castAs<MemberPointerType>(); |
4433 | const auto *ToMemPointer1 = ToType1->castAs<MemberPointerType>(); |
4434 | const auto *FromMemPointer2 = FromType2->castAs<MemberPointerType>(); |
4435 | const auto *ToMemPointer2 = ToType2->castAs<MemberPointerType>(); |
4436 | const Type *FromPointeeType1 = FromMemPointer1->getClass(); |
4437 | const Type *ToPointeeType1 = ToMemPointer1->getClass(); |
4438 | const Type *FromPointeeType2 = FromMemPointer2->getClass(); |
4439 | const Type *ToPointeeType2 = ToMemPointer2->getClass(); |
4440 | QualType FromPointee1 = QualType(FromPointeeType1, 0).getUnqualifiedType(); |
4441 | QualType ToPointee1 = QualType(ToPointeeType1, 0).getUnqualifiedType(); |
4442 | QualType FromPointee2 = QualType(FromPointeeType2, 0).getUnqualifiedType(); |
4443 | QualType ToPointee2 = QualType(ToPointeeType2, 0).getUnqualifiedType(); |
4444 | |
4445 | if (FromPointee1 == FromPointee2 && ToPointee1 != ToPointee2) { |
4446 | if (S.IsDerivedFrom(Loc, ToPointee1, ToPointee2)) |
4447 | return ImplicitConversionSequence::Worse; |
4448 | else if (S.IsDerivedFrom(Loc, ToPointee2, ToPointee1)) |
4449 | return ImplicitConversionSequence::Better; |
4450 | } |
4451 | |
4452 | if (ToPointee1 == ToPointee2 && FromPointee1 != FromPointee2) { |
4453 | if (S.IsDerivedFrom(Loc, FromPointee1, FromPointee2)) |
4454 | return ImplicitConversionSequence::Better; |
4455 | else if (S.IsDerivedFrom(Loc, FromPointee2, FromPointee1)) |
4456 | return ImplicitConversionSequence::Worse; |
4457 | } |
4458 | } |
4459 | |
4460 | if (SCS1.Second == ICK_Derived_To_Base) { |
4461 | |
4462 | |
4463 | |
4464 | |
4465 | if (S.Context.hasSameUnqualifiedType(FromType1, FromType2) && |
4466 | !S.Context.hasSameUnqualifiedType(ToType1, ToType2)) { |
4467 | if (S.IsDerivedFrom(Loc, ToType1, ToType2)) |
4468 | return ImplicitConversionSequence::Better; |
4469 | else if (S.IsDerivedFrom(Loc, ToType2, ToType1)) |
4470 | return ImplicitConversionSequence::Worse; |
4471 | } |
4472 | |
4473 | |
4474 | |
4475 | |
4476 | |
4477 | if (!S.Context.hasSameUnqualifiedType(FromType1, FromType2) && |
4478 | S.Context.hasSameUnqualifiedType(ToType1, ToType2)) { |
4479 | if (S.IsDerivedFrom(Loc, FromType2, FromType1)) |
4480 | return ImplicitConversionSequence::Better; |
4481 | else if (S.IsDerivedFrom(Loc, FromType1, FromType2)) |
4482 | return ImplicitConversionSequence::Worse; |
4483 | } |
4484 | } |
4485 | |
4486 | return ImplicitConversionSequence::Indistinguishable; |
4487 | } |
4488 | |
4489 | |
4490 | |
4491 | static bool isTypeValid(QualType T) { |
4492 | if (CXXRecordDecl *Record = T->getAsCXXRecordDecl()) |
4493 | return !Record->isInvalidDecl(); |
4494 | |
4495 | return true; |
4496 | } |
4497 | |
4498 | static QualType withoutUnaligned(ASTContext &Ctx, QualType T) { |
4499 | if (!T.getQualifiers().hasUnaligned()) |
4500 | return T; |
4501 | |
4502 | Qualifiers Q; |
4503 | T = Ctx.getUnqualifiedArrayType(T, Q); |
4504 | Q.removeUnaligned(); |
4505 | return Ctx.getQualifiedType(T, Q); |
4506 | } |
4507 | |
4508 | |
4509 | |
4510 | |
4511 | |
4512 | |
4513 | |
4514 | Sema::ReferenceCompareResult |
4515 | Sema::CompareReferenceRelationship(SourceLocation Loc, |
4516 | QualType OrigT1, QualType OrigT2, |
4517 | ReferenceConversions *ConvOut) { |
4518 | assert(!OrigT1->isReferenceType() && |
4519 | "T1 must be the pointee type of the reference type"); |
4520 | assert(!OrigT2->isReferenceType() && "T2 cannot be a reference type"); |
4521 | |
4522 | QualType T1 = Context.getCanonicalType(OrigT1); |
4523 | QualType T2 = Context.getCanonicalType(OrigT2); |
4524 | Qualifiers T1Quals, T2Quals; |
4525 | QualType UnqualT1 = Context.getUnqualifiedArrayType(T1, T1Quals); |
4526 | QualType UnqualT2 = Context.getUnqualifiedArrayType(T2, T2Quals); |
4527 | |
4528 | ReferenceConversions ConvTmp; |
4529 | ReferenceConversions &Conv = ConvOut ? *ConvOut : ConvTmp; |
4530 | Conv = ReferenceConversions(); |
4531 | |
4532 | |
4533 | |
4534 | |
4535 | |
4536 | |
4537 | |
4538 | |
4539 | |
4540 | |
4541 | |
4542 | |
4543 | QualType ConvertedT2; |
4544 | if (UnqualT1 == UnqualT2) { |
4545 | |
4546 | } else if (isCompleteType(Loc, OrigT2) && |
4547 | isTypeValid(UnqualT1) && isTypeValid(UnqualT2) && |
4548 | IsDerivedFrom(Loc, UnqualT2, UnqualT1)) |
4549 | Conv |= ReferenceConversions::DerivedToBase; |
4550 | else if (UnqualT1->isObjCObjectOrInterfaceType() && |
4551 | UnqualT2->isObjCObjectOrInterfaceType() && |
4552 | Context.canBindObjCObjectType(UnqualT1, UnqualT2)) |
4553 | Conv |= ReferenceConversions::ObjC; |
4554 | else if (UnqualT2->isFunctionType() && |
4555 | IsFunctionConversion(UnqualT2, UnqualT1, ConvertedT2)) { |
4556 | Conv |= ReferenceConversions::Function; |
4557 | |
4558 | return Ref_Compatible; |
4559 | } |
4560 | bool ConvertedReferent = Conv != 0; |
4561 | |
4562 | |
4563 | |
4564 | bool PreviousToQualsIncludeConst = true; |
4565 | bool TopLevel = true; |
4566 | do { |
4567 | if (T1 == T2) |
4568 | break; |
4569 | |
4570 | |
4571 | Conv |= ReferenceConversions::Qualification; |
4572 | |
4573 | |
4574 | |
4575 | |
4576 | if (!TopLevel) |
4577 | Conv |= ReferenceConversions::NestedQualification; |
4578 | |
4579 | |
4580 | T1 = withoutUnaligned(Context, T1); |
4581 | T2 = withoutUnaligned(Context, T2); |
4582 | |
4583 | |
4584 | |
4585 | bool ObjCLifetimeConversion = false; |
4586 | if (!isQualificationConversionStep(T2, T1, false, TopLevel, |
4587 | PreviousToQualsIncludeConst, |
4588 | ObjCLifetimeConversion)) |
4589 | return (ConvertedReferent || Context.hasSimilarType(T1, T2)) |
4590 | ? Ref_Related |
4591 | : Ref_Incompatible; |
4592 | |
4593 | |
4594 | if (ObjCLifetimeConversion) |
4595 | Conv |= ReferenceConversions::ObjCLifetime; |
4596 | |
4597 | TopLevel = false; |
4598 | } while (Context.UnwrapSimilarTypes(T1, T2)); |
4599 | |
4600 | |
4601 | |
4602 | |
4603 | return (ConvertedReferent || Context.hasSameUnqualifiedType(T1, T2)) |
4604 | ? Ref_Compatible |
4605 | : Ref_Incompatible; |
4606 | } |
4607 | |
4608 | |
4609 | |
4610 | static bool |
4611 | FindConversionForRefInit(Sema &S, ImplicitConversionSequence &ICS, |
4612 | QualType DeclType, SourceLocation DeclLoc, |
4613 | Expr *Init, QualType T2, bool AllowRvalues, |
4614 | bool AllowExplicit) { |
4615 | assert(T2->isRecordType() && "Can only find conversions of record types."); |
4616 | auto *T2RecordDecl = cast<CXXRecordDecl>(T2->castAs<RecordType>()->getDecl()); |
4617 | |
4618 | OverloadCandidateSet CandidateSet( |
4619 | DeclLoc, OverloadCandidateSet::CSK_InitByUserDefinedConversion); |
4620 | const auto &Conversions = T2RecordDecl->getVisibleConversionFunctions(); |
4621 | for (auto I = Conversions.begin(), E = Conversions.end(); I != E; ++I) { |
4622 | NamedDecl *D = *I; |
4623 | CXXRecordDecl *ActingDC = cast<CXXRecordDecl>(D->getDeclContext()); |
4624 | if (isa<UsingShadowDecl>(D)) |
4625 | D = cast<UsingShadowDecl>(D)->getTargetDecl(); |
4626 | |
4627 | FunctionTemplateDecl *ConvTemplate |
4628 | = dyn_cast<FunctionTemplateDecl>(D); |
4629 | CXXConversionDecl *Conv; |
4630 | if (ConvTemplate) |
4631 | Conv = cast<CXXConversionDecl>(ConvTemplate->getTemplatedDecl()); |
4632 | else |
4633 | Conv = cast<CXXConversionDecl>(D); |
4634 | |
4635 | if (AllowRvalues) { |
4636 | |
4637 | |
4638 | if (!ConvTemplate && DeclType->isRValueReferenceType()) { |
4639 | const ReferenceType *RefType |
4640 | = Conv->getConversionType()->getAs<LValueReferenceType>(); |
4641 | if (RefType && !RefType->getPointeeType()->isFunctionType()) |
4642 | continue; |
4643 | } |
4644 | |
4645 | if (!ConvTemplate && |
4646 | S.CompareReferenceRelationship( |
4647 | DeclLoc, |
4648 | Conv->getConversionType() |
4649 | .getNonReferenceType() |
4650 | .getUnqualifiedType(), |
4651 | DeclType.getNonReferenceType().getUnqualifiedType()) == |
4652 | Sema::Ref_Incompatible) |
4653 | continue; |
4654 | } else { |
4655 | |
4656 | |
4657 | |
4658 | |
4659 | const ReferenceType *RefType = |
4660 | Conv->getConversionType()->getAs<ReferenceType>(); |
4661 | if (!RefType || |
4662 | (!RefType->isLValueReferenceType() && |
4663 | !RefType->getPointeeType()->isFunctionType())) |
4664 | continue; |
4665 | } |
4666 | |
4667 | if (ConvTemplate) |
4668 | S.AddTemplateConversionCandidate( |
4669 | ConvTemplate, I.getPair(), ActingDC, Init, DeclType, CandidateSet, |
4670 | false, AllowExplicit); |
4671 | else |
4672 | S.AddConversionCandidate( |
4673 | Conv, I.getPair(), ActingDC, Init, DeclType, CandidateSet, |
4674 | false, AllowExplicit); |
4675 | } |
4676 | |
4677 | bool HadMultipleCandidates = (CandidateSet.size() > 1); |
4678 | |
4679 | OverloadCandidateSet::iterator Best; |
4680 | switch (CandidateSet.BestViableFunction(S, DeclLoc, Best)) { |
4681 | case OR_Success: |
4682 | |
4683 | |
4684 | |
4685 | |
4686 | |
4687 | |
4688 | |
4689 | |
4690 | |
4691 | |
4692 | if (!Best->FinalConversion.DirectBinding) |
4693 | return false; |
4694 | |
4695 | ICS.setUserDefined(); |
4696 | ICS.UserDefined.Before = Best->Conversions[0].Standard; |
4697 | ICS.UserDefined.After = Best->FinalConversion; |
4698 | ICS.UserDefined.HadMultipleCandidates = HadMultipleCandidates; |
4699 | ICS.UserDefined.ConversionFunction = Best->Function; |
4700 | ICS.UserDefined.FoundConversionFunction = Best->FoundDecl; |
4701 | ICS.UserDefined.EllipsisConversion = false; |
4702 | assert(ICS.UserDefined.After.ReferenceBinding && |
4703 | ICS.UserDefined.After.DirectBinding && |
4704 | "Expected a direct reference binding!"); |
4705 | return true; |
4706 | |
4707 | case OR_Ambiguous: |
4708 | ICS.setAmbiguous(); |
4709 | for (OverloadCandidateSet::iterator Cand = CandidateSet.begin(); |
4710 | Cand != CandidateSet.end(); ++Cand) |
4711 | if (Cand->Best) |
4712 | ICS.Ambiguous.addConversion(Cand->FoundDecl, Cand->Function); |
4713 | return true; |
4714 | |
4715 | case OR_No_Viable_Function: |
4716 | case OR_Deleted: |
4717 | |
4718 | |
4719 | return false; |
4720 | } |
4721 | |
4722 | llvm_unreachable("Invalid OverloadResult!"); |
4723 | } |
4724 | |
4725 | |
4726 | |
4727 | static ImplicitConversionSequence |
4728 | TryReferenceInit(Sema &S, Expr *Init, QualType DeclType, |
4729 | SourceLocation DeclLoc, |
4730 | bool SuppressUserConversions, |
4731 | bool AllowExplicit) { |
4732 | assert(DeclType->isReferenceType() && "Reference init needs a reference"); |
4733 | |
4734 | |
4735 | ImplicitConversionSequence ICS; |
4736 | ICS.setBad(BadConversionSequence::no_conversion, Init, DeclType); |
4737 | |
4738 | QualType T1 = DeclType->castAs<ReferenceType>()->getPointeeType(); |
4739 | QualType T2 = Init->getType(); |
4740 | |
4741 | |
4742 | |
4743 | |
4744 | if (S.Context.getCanonicalType(T2) == S.Context.OverloadTy) { |
4745 | DeclAccessPair Found; |
4746 | if (FunctionDecl *Fn = S.ResolveAddressOfOverloadedFunction(Init, DeclType, |
4747 | false, Found)) |
4748 | T2 = Fn->getType(); |
4749 | } |
4750 | |
4751 | |
4752 | bool isRValRef = DeclType->isRValueReferenceType(); |
4753 | Expr::Classification InitCategory = Init->Classify(S.Context); |
4754 | |
4755 | Sema::ReferenceConversions RefConv; |
4756 | Sema::ReferenceCompareResult RefRelationship = |
4757 | S.CompareReferenceRelationship(DeclLoc, T1, T2, &RefConv); |
4758 | |
4759 | auto SetAsReferenceBinding = [&](bool BindsDirectly) { |
4760 | ICS.setStandard(); |
4761 | ICS.Standard.First = ICK_Identity; |
4762 | |
4763 | |
4764 | ICS.Standard.Second = (RefConv & Sema::ReferenceConversions::DerivedToBase) |
4765 | ? ICK_Derived_To_Base |
4766 | : (RefConv & Sema::ReferenceConversions::ObjC) |
4767 | ? ICK_Compatible_Conversion |
4768 | : ICK_Identity; |
4769 | |
4770 | |
4771 | |
4772 | ICS.Standard.Third = (RefConv & |
4773 | Sema::ReferenceConversions::NestedQualification) |
4774 | ? ICK_Qualification |
4775 | : ICK_Identity; |
4776 | ICS.Standard.setFromType(T2); |
4777 | ICS.Standard.setToType(0, T2); |
4778 | ICS.Standard.setToType(1, T1); |
4779 | ICS.Standard.setToType(2, T1); |
4780 | ICS.Standard.ReferenceBinding = true; |
4781 | ICS.Standard.DirectBinding = BindsDirectly; |
4782 | ICS.Standard.IsLvalueReference = !isRValRef; |
4783 | ICS.Standard.BindsToFunctionLvalue = T2->isFunctionType(); |
4784 | ICS.Standard.BindsToRvalue = InitCategory.isRValue(); |
4785 | ICS.Standard.BindsImplicitObjectArgumentWithoutRefQualifier = false; |
4786 | ICS.Standard.ObjCLifetimeConversionBinding = |
4787 | (RefConv & Sema::ReferenceConversions::ObjCLifetime) != 0; |
4788 | ICS.Standard.CopyConstructor = nullptr; |
4789 | ICS.Standard.DeprecatedStringLiteralToCharPtr = false; |
4790 | }; |
4791 | |
4792 | |
4793 | |
4794 | |
4795 | |
4796 | |
4797 | if (!isRValRef) { |
4798 | |
4799 | |
4800 | |
4801 | |
4802 | if (InitCategory.isLValue() && RefRelationship == Sema::Ref_Compatible) { |
4803 | |
4804 | |
4805 | |
4806 | |
4807 | |
4808 | |
4809 | |
4810 | SetAsReferenceBinding(true); |
4811 | |
4812 | |
4813 | |
4814 | |
4815 | |
4816 | return ICS; |
4817 | } |
4818 | |
4819 | |
4820 | |
4821 | |
4822 | |
4823 | |
4824 | |
4825 | |
4826 | if (!SuppressUserConversions && T2->isRecordType() && |
4827 | S.isCompleteType(DeclLoc, T2) && |
4828 | RefRelationship == Sema::Ref_Incompatible) { |
4829 | if (FindConversionForRefInit(S, ICS, DeclType, DeclLoc, |
4830 | Init, T2, false, |
4831 | AllowExplicit)) |
4832 | return ICS; |
4833 | } |
4834 | } |
4835 | |
4836 | |
4837 | |
4838 | |
4839 | if (!isRValRef && (!T1.isConstQualified() || T1.isVolatileQualified())) { |
4840 | if (InitCategory.isRValue() && RefRelationship != Sema::Ref_Incompatible) |
4841 | ICS.setBad(BadConversionSequence::lvalue_ref_to_rvalue, Init, DeclType); |
4842 | return ICS; |
4843 | } |
4844 | |
4845 | |
4846 | |
4847 | |
4848 | |
4849 | if (RefRelationship == Sema::Ref_Compatible && |
4850 | (InitCategory.isXValue() || |
4851 | (InitCategory.isPRValue() && |
4852 | (T2->isRecordType() || T2->isArrayType())) || |
4853 | (InitCategory.isLValue() && T2->isFunctionType()))) { |
4854 | |
4855 | |
4856 | |
4857 | |
4858 | |
4859 | SetAsReferenceBinding(S.getLangOpts().CPlusPlus11 || |
4860 | !(InitCategory.isPRValue() || T2->isRecordType())); |
4861 | return ICS; |
4862 | } |
4863 | |
4864 | |
4865 | |
4866 | |
4867 | |
4868 | |
4869 | |
4870 | |
4871 | |
4872 | |
4873 | |
4874 | if (!SuppressUserConversions && RefRelationship == Sema::Ref_Incompatible && |
4875 | T2->isRecordType() && S.isCompleteType(DeclLoc, T2) && |
4876 | FindConversionForRefInit(S, ICS, DeclType, DeclLoc, |
4877 | Init, T2, true, |
4878 | AllowExplicit)) { |
4879 | |
4880 | |
4881 | |
4882 | |
4883 | if (ICS.isUserDefined() && isRValRef && |
4884 | ICS.UserDefined.After.First == ICK_Lvalue_To_Rvalue) |
4885 | ICS.setBad(BadConversionSequence::no_conversion, Init, DeclType); |
4886 | |
4887 | return ICS; |
4888 | } |
4889 | |
4890 | |
4891 | if (T1->isFunctionType()) |
4892 | return ICS; |
4893 | |
4894 | |
4895 | |
4896 | |
4897 | |
4898 | |
4899 | |
4900 | |
4901 | if (RefRelationship == Sema::Ref_Related) { |
4902 | |
4903 | |
4904 | |
4905 | |
4906 | |
4907 | |
4908 | |
4909 | Qualifiers T1Quals = T1.getQualifiers(); |
4910 | Qualifiers T2Quals = T2.getQualifiers(); |
4911 | T1Quals.removeObjCGCAttr(); |
4912 | T1Quals.removeObjCLifetime(); |
4913 | T2Quals.removeObjCGCAttr(); |
4914 | T2Quals.removeObjCLifetime(); |
4915 | |
4916 | T1Quals.removeUnaligned(); |
4917 | T2Quals.removeUnaligned(); |
4918 | if (!T1Quals.compatiblyIncludes(T2Quals)) |
4919 | return ICS; |
4920 | } |
4921 | |
4922 | |
4923 | |
4924 | |
4925 | |
4926 | |
4927 | if (SuppressUserConversions && RefRelationship == Sema::Ref_Incompatible && |
4928 | (T1->isRecordType() || T2->isRecordType())) |
4929 | return ICS; |
4930 | |
4931 | |
4932 | |
4933 | if (RefRelationship >= Sema::Ref_Related && isRValRef && |
4934 | Init->Classify(S.Context).isLValue()) { |
4935 | ICS.setBad(BadConversionSequence::rvalue_ref_to_lvalue, Init, DeclType); |
4936 | return ICS; |
4937 | } |
4938 | |
4939 | |
4940 | |
4941 | |
4942 | |
4943 | |
4944 | |
4945 | |
4946 | |
4947 | |
4948 | |
4949 | ICS = TryImplicitConversion(S, Init, T1, SuppressUserConversions, |
4950 | AllowedExplicit::None, |
4951 | false, |
4952 | false, |
4953 | false, |
4954 | false); |
4955 | |
4956 | |
4957 | if (ICS.isStandard()) { |
4958 | ICS.Standard.ReferenceBinding = true; |
4959 | ICS.Standard.IsLvalueReference = !isRValRef; |
4960 | ICS.Standard.BindsToFunctionLvalue = false; |
4961 | ICS.Standard.BindsToRvalue = true; |
4962 | ICS.Standard.BindsImplicitObjectArgumentWithoutRefQualifier = false; |
4963 | ICS.Standard.ObjCLifetimeConversionBinding = false; |
4964 | } else if (ICS.isUserDefined()) { |
4965 | const ReferenceType *LValRefType = |
4966 | ICS.UserDefined.ConversionFunction->getReturnType() |
4967 | ->getAs<LValueReferenceType>(); |
4968 | |
4969 | |
4970 | |
4971 | |
4972 | |
4973 | |
4974 | |
4975 | if (isRValRef && LValRefType) { |
4976 | ICS.setBad(BadConversionSequence::no_conversion, Init, DeclType); |
4977 | return ICS; |
4978 | } |
4979 | |
4980 | ICS.UserDefined.After.ReferenceBinding = true; |
4981 | ICS.UserDefined.After.IsLvalueReference = !isRValRef; |
4982 | ICS.UserDefined.After.BindsToFunctionLvalue = false; |
4983 | ICS.UserDefined.After.BindsToRvalue = !LValRefType; |
4984 | ICS.UserDefined.After.BindsImplicitObjectArgumentWithoutRefQualifier = false; |
4985 | ICS.UserDefined.After.ObjCLifetimeConversionBinding = false; |
4986 | } |
4987 | |
4988 | return ICS; |
4989 | } |
4990 | |
4991 | static ImplicitConversionSequence |
4992 | TryCopyInitialization(Sema &S, Expr *From, QualType ToType, |
4993 | bool SuppressUserConversions, |
4994 | bool InOverloadResolution, |
4995 | bool AllowObjCWritebackConversion, |
4996 | bool AllowExplicit = false); |
4997 | |
4998 | |
4999 | |
5000 | static ImplicitConversionSequence |
5001 | TryListConversion(Sema &S, InitListExpr *From, QualType ToType, |
5002 | bool SuppressUserConversions, |
5003 | bool InOverloadResolution, |
5004 | bool AllowObjCWritebackConversion) { |
5005 | |
5006 | |
5007 | |
5008 | |
5009 | ImplicitConversionSequence Result; |
5010 | Result.setBad(BadConversionSequence::no_conversion, From, ToType); |
5011 | |
5012 | |
5013 | |
5014 | if (!S.isCompleteType(From->getBeginLoc(), ToType)) |
5015 | return Result; |
5016 | |
5017 | |
5018 | |
5019 | |
5020 | |
5021 | |
5022 | |
5023 | |
5024 | |
5025 | |
5026 | |
5027 | if (From->getNumInits() == 1) { |
5028 | if (ToType->isRecordType()) { |
5029 | QualType InitType = From->getInit(0)->getType(); |
5030 | if (S.Context.hasSameUnqualifiedType(InitType, ToType) || |
5031 | S.IsDerivedFrom(From->getBeginLoc(), InitType, ToType)) |
5032 | return TryCopyInitialization(S, From->getInit(0), ToType, |
5033 | SuppressUserConversions, |
5034 | InOverloadResolution, |
5035 | AllowObjCWritebackConversion); |
5036 | } |
5037 | |
5038 | if (const auto *AT = S.Context.getAsArrayType(ToType)) { |
5039 | if (S.IsStringInit(From->getInit(0), AT)) { |
5040 | InitializedEntity Entity = |
5041 | InitializedEntity::InitializeParameter(S.Context, ToType, |
5042 | false); |
5043 | if (S.CanPerformCopyInitialization(Entity, From)) { |
5044 | Result.setStandard(); |
5045 | Result.Standard.setAsIdentityConversion(); |
5046 | Result.Standard.setFromType(ToType); |
5047 | Result.Standard.setAllToTypes(ToType); |
5048 | return Result; |
5049 | } |
5050 | } |
5051 | } |
5052 | } |
5053 | |
5054 | |
5055 | |
5056 | |
5057 | |
5058 | |
5059 | |
5060 | |
5061 | |
5062 | |
5063 | |
5064 | |
5065 | |
5066 | |
5067 | |
5068 | |
5069 | bool toStdInitializerList = false; |
5070 | QualType X; |
5071 | if (ToType->isArrayType()) |
5072 | X = S.Context.getAsArrayType(ToType)->getElementType(); |
5073 | else |
5074 | toStdInitializerList = S.isStdInitializerList(ToType, &X); |
5075 | if (!X.isNull()) { |
5076 | for (unsigned i = 0, e = From->getNumInits(); i < e; ++i) { |
5077 | Expr *Init = From->getInit(i); |
5078 | ImplicitConversionSequence ICS = |
5079 | TryCopyInitialization(S, Init, X, SuppressUserConversions, |
5080 | InOverloadResolution, |
5081 | AllowObjCWritebackConversion); |
5082 | |
5083 | if (ICS.isBad()) { |
5084 | Result = ICS; |
5085 | break; |
5086 | } |
5087 | |
5088 | if (Result.isBad() || CompareImplicitConversionSequences( |
5089 | S, From->getBeginLoc(), ICS, Result) == |
5090 | ImplicitConversionSequence::Worse) |
5091 | Result = ICS; |
5092 | } |
5093 | |
5094 | |
5095 | |
5096 | if (From->getNumInits() == 0) { |
5097 | Result.setStandard(); |
5098 | Result.Standard.setAsIdentityConversion(); |
5099 | Result.Standard.setFromType(ToType); |
5100 | Result.Standard.setAllToTypes(ToType); |
5101 | } |
5102 | |
5103 | Result.setStdInitializerListElement(toStdInitializerList); |
5104 | return Result; |
5105 | } |
5106 | |
5107 | |
5108 | |
5109 | |
5110 | |
5111 | |
5112 | |
5113 | |
5114 | if (ToType->isRecordType() && !ToType->isAggregateType()) { |
5115 | |
5116 | return TryUserDefinedConversion(S, From, ToType, SuppressUserConversions, |
5117 | AllowedExplicit::None, |
5118 | InOverloadResolution, false, |
5119 | AllowObjCWritebackConversion, |
5120 | false); |
5121 | } |
5122 | |
5123 | |
5124 | |
5125 | |
5126 | |
5127 | |
5128 | if (ToType->isAggregateType()) { |
5129 | |
5130 | |
5131 | |
5132 | InitializedEntity Entity = |
5133 | InitializedEntity::InitializeParameter(S.Context, ToType, |
5134 | false); |
5135 | if (S.CanPerformAggregateInitializationForOverloadResolution(Entity, |
5136 | From)) { |
5137 | Result.setUserDefined(); |
5138 | Result.UserDefined.Before.setAsIdentityConversion(); |
5139 | |
5140 | Result.UserDefined.Before.setFromType(QualType()); |
5141 | Result.UserDefined.Before.setAllToTypes(QualType()); |
5142 | |
5143 | Result.UserDefined.After.setAsIdentityConversion(); |
5144 | Result.UserDefined.After.setFromType(ToType); |
5145 | Result.UserDefined.After.setAllToTypes(ToType); |
5146 | Result.UserDefined.ConversionFunction = nullptr; |
5147 | } |
5148 | return Result; |
5149 | } |
5150 | |
5151 | |
5152 | |
5153 | |
5154 | if (ToType->isReferenceType()) { |
5155 | |
5156 | |
5157 | |
5158 | |
5159 | QualType T1 = ToType->castAs<ReferenceType>()->getPointeeType(); |
5160 | |
5161 | |
5162 | |
5163 | if (From->getNumInits() == 1) { |
5164 | Expr *Init = From->getInit(0); |
5165 | |
5166 | QualType T2 = Init->getType(); |
5167 | |
5168 | |
5169 | |
5170 | |
5171 | if (S.Context.getCanonicalType(T2) == S.Context.OverloadTy) { |
5172 | DeclAccessPair Found; |
5173 | if (FunctionDecl *Fn = S.ResolveAddressOfOverloadedFunction( |
5174 | Init, ToType, false, Found)) |
5175 | T2 = Fn->getType(); |
5176 | } |
5177 | |
5178 | |
5179 | Sema::ReferenceCompareResult RefRelationship = |
5180 | S.CompareReferenceRelationship(From->getBeginLoc(), T1, T2); |
5181 | |
5182 | if (RefRelationship >= Sema::Ref_Related) { |
5183 | return TryReferenceInit(S, Init, ToType, From->getBeginLoc(), |
5184 | SuppressUserConversions, |
5185 | false); |
5186 | } |
5187 | } |
5188 | |
5189 | |
5190 | |
5191 | Result = TryListConversion(S, From, T1, SuppressUserConversions, |
5192 | InOverloadResolution, |
5193 | AllowObjCWritebackConversion); |
5194 | if (Result.isFailure()) |
5195 | return Result; |
5196 | assert(!Result.isEllipsis() && |
5197 | "Sub-initialization cannot result in ellipsis conversion."); |
5198 | |
5199 | |
5200 | if (ToType->isRValueReferenceType() || |
5201 | (T1.isConstQualified() && !T1.isVolatileQualified())) { |
5202 | StandardConversionSequence &SCS = Result.isStandard() ? Result.Standard : |
5203 | Result.UserDefined.After; |
5204 | SCS.ReferenceBinding = true; |
5205 | SCS.IsLvalueReference = ToType->isLValueReferenceType(); |
5206 | SCS.BindsToRvalue = true; |
5207 | SCS.BindsToFunctionLvalue = false; |
5208 | SCS.BindsImplicitObjectArgumentWithoutRefQualifier = false; |
5209 | SCS.ObjCLifetimeConversionBinding = false; |
5210 | } else |
5211 | Result.setBad(BadConversionSequence::lvalue_ref_to_rvalue, |
5212 | From, ToType); |
5213 | return Result; |
5214 | } |
5215 | |
5216 | |
5217 | |
5218 | |
5219 | if (!ToType->isRecordType()) { |
5220 | |
5221 | |
5222 | |
5223 | unsigned NumInits = From->getNumInits(); |
5224 | if (NumInits == 1 && !isa<InitListExpr>(From->getInit(0))) |
5225 | Result = TryCopyInitialization(S, From->getInit(0), ToType, |
5226 | SuppressUserConversions, |
5227 | InOverloadResolution, |
5228 | AllowObjCWritebackConversion); |
5229 | |
5230 | |
5231 | else if (NumInits == 0) { |
5232 | Result.setStandard(); |
5233 | Result.Standard.setAsIdentityConversion(); |
5234 | Result.Standard.setFromType(ToType); |
5235 | Result.Standard.setAllToTypes(ToType); |
5236 | } |
5237 | return Result; |
5238 | } |
5239 | |
5240 | |
5241 | |
5242 | |
5243 | return Result; |
5244 | } |
5245 | |
5246 | |
5247 | |
5248 | |
5249 | |
5250 | |
5251 | |
5252 | static ImplicitConversionSequence |
5253 | TryCopyInitialization(Sema &S, Expr *From, QualType ToType, |
5254 | bool SuppressUserConversions, |
5255 | bool InOverloadResolution, |
5256 | bool AllowObjCWritebackConversion, |
5257 | bool AllowExplicit) { |
5258 | if (InitListExpr *FromInitList = dyn_cast<InitListExpr>(From)) |
5259 | return TryListConversion(S, FromInitList, ToType, SuppressUserConversions, |
5260 | InOverloadResolution,AllowObjCWritebackConversion); |
5261 | |
5262 | if (ToType->isReferenceType()) |
5263 | return TryReferenceInit(S, From, ToType, |
5264 | From->getBeginLoc(), |
5265 | SuppressUserConversions, AllowExplicit); |
5266 | |
5267 | return TryImplicitConversion(S, From, ToType, |
5268 | SuppressUserConversions, |
5269 | AllowedExplicit::None, |
5270 | InOverloadResolution, |
5271 | false, |
5272 | AllowObjCWritebackConversion, |
5273 | false); |
5274 | } |
5275 | |
5276 | static bool TryCopyInitialization(const CanQualType FromQTy, |
5277 | const CanQualType ToQTy, |
5278 | Sema &S, |
5279 | SourceLocation Loc, |
5280 | ExprValueKind FromVK) { |
5281 | OpaqueValueExpr TmpExpr(Loc, FromQTy, FromVK); |
5282 | ImplicitConversionSequence ICS = |
5283 | TryCopyInitialization(S, &TmpExpr, ToQTy, true, true, false); |
5284 | |
5285 | return !ICS.isBad(); |
5286 | } |
5287 | |
5288 | |
5289 | |
5290 | |
5291 | static ImplicitConversionSequence |
5292 | TryObjectArgumentInitialization(Sema &S, SourceLocation Loc, QualType FromType, |
5293 | Expr::Classification FromClassification, |
5294 | CXXMethodDecl *Method, |
5295 | CXXRecordDecl *ActingContext) { |
5296 | QualType ClassType = S.Context.getTypeDeclType(ActingContext); |
5297 | |
5298 | |
5299 | Qualifiers Quals = Method->getMethodQualifiers(); |
5300 | if (isa<CXXDestructorDecl>(Method)) { |
5301 | Quals.addConst(); |
5302 | Quals.addVolatile(); |
5303 | } |
5304 | |
5305 | QualType ImplicitParamType = S.Context.getQualifiedType(ClassType, Quals); |
5306 | |
5307 | |
5308 | |
5309 | ImplicitConversionSequence ICS; |
5310 | |
5311 | |
5312 | if (const PointerType *PT = FromType->getAs<PointerType>()) { |
5313 | FromType = PT->getPointeeType(); |
5314 | |
5315 | |
5316 | |
5317 | assert(FromClassification.isLValue()); |
5318 | } |
5319 | |
5320 | assert(FromType->isRecordType()); |
5321 | |
5322 | |
5323 | |
5324 | |
5325 | |
5326 | |
5327 | |
5328 | |
5329 | |
5330 | |
5331 | |
5332 | |
5333 | |
5334 | |
5335 | |
5336 | |
5337 | |
5338 | |
5339 | |
5340 | |
5341 | QualType FromTypeCanon = S.Context.getCanonicalType(FromType); |
5342 | if (ImplicitParamType.getCVRQualifiers() |
5343 | != FromTypeCanon.getLocalCVRQualifiers() && |
5344 | !ImplicitParamType.isAtLeastAsQualifiedAs(FromTypeCanon)) { |
5345 | ICS.setBad(BadConversionSequence::bad_qualifiers, |
5346 | FromType, ImplicitParamType); |
5347 | return ICS; |
5348 | } |
5349 | |
5350 | if (FromTypeCanon.hasAddressSpace()) { |
5351 | Qualifiers QualsImplicitParamType = ImplicitParamType.getQualifiers(); |
5352 | Qualifiers QualsFromType = FromTypeCanon.getQualifiers(); |
5353 | if (!QualsImplicitParamType.isAddressSpaceSupersetOf(QualsFromType)) { |
5354 | ICS.setBad(BadConversionSequence::bad_qualifiers, |
5355 | FromType, ImplicitParamType); |
5356 | return ICS; |
5357 | } |
5358 | } |
5359 | |
5360 | |
5361 | |
5362 | QualType ClassTypeCanon = S.Context.getCanonicalType(ClassType); |
5363 | ImplicitConversionKind SecondKind; |
5364 | if (ClassTypeCanon == FromTypeCanon.getLocalUnqualifiedType()) { |
5365 | SecondKind = ICK_Identity; |
5366 | } else if (S.IsDerivedFrom(Loc, FromType, ClassType)) |
5367 | SecondKind = ICK_Derived_To_Base; |
5368 | else { |
5369 | ICS.setBad(BadConversionSequence::unrelated_class, |
5370 | FromType, ImplicitParamType); |
5371 | return ICS; |
5372 | } |
5373 | |
5374 | |
5375 | switch (Method->getRefQualifier()) { |
5376 | case RQ_None: |
5377 | |
5378 | break; |
5379 | |
5380 | case RQ_LValue: |
5381 | if (!FromClassification.isLValue() && !Quals.hasOnlyConst()) { |
5382 | |
5383 | ICS.setBad(BadConversionSequence::lvalue_ref_to_rvalue, FromType, |
5384 | ImplicitParamType); |
5385 | return ICS; |
5386 | } |
5387 | break; |
5388 | |
5389 | case RQ_RValue: |
5390 | if (!FromClassification.isRValue()) { |
5391 | |
5392 | ICS.setBad(BadConversionSequence::rvalue_ref_to_lvalue, FromType, |
5393 | ImplicitParamType); |
5394 | return ICS; |
5395 | } |
5396 | break; |
5397 | } |
5398 | |
5399 | |
5400 | ICS.setStandard(); |
5401 | ICS.Standard.setAsIdentityConversion(); |
5402 | ICS.Standard.Second = SecondKind; |
5403 | ICS.Standard.setFromType(FromType); |
5404 | ICS.Standard.setAllToTypes(ImplicitParamType); |
5405 | ICS.Standard.ReferenceBinding = true; |
5406 | ICS.Standard.DirectBinding = true; |
5407 | ICS.Standard.IsLvalueReference = Method->getRefQualifier() != RQ_RValue; |
5408 | ICS.Standard.BindsToFunctionLvalue = false; |
5409 | ICS.Standard.BindsToRvalue = FromClassification.isRValue(); |
5410 | ICS.Standard.BindsImplicitObjectArgumentWithoutRefQualifier |
5411 | = (Method->getRefQualifier() == RQ_None); |
5412 | return ICS; |
5413 | } |
5414 | |
5415 | |
5416 | |
5417 | |
5418 | ExprResult |
5419 | Sema::PerformObjectArgumentInitialization(Expr *From, |
5420 | NestedNameSpecifier *Qualifier, |
5421 | NamedDecl *FoundDecl, |
5422 | CXXMethodDecl *Method) { |
5423 | QualType FromRecordType, DestType; |
5424 | QualType ImplicitParamRecordType = |
5425 | Method->getThisType()->castAs<PointerType>()->getPointeeType(); |
5426 | |
5427 | Expr::Classification FromClassification; |
5428 | if (const PointerType *PT = From->getType()->getAs<PointerType>()) { |
5429 | FromRecordType = PT->getPointeeType(); |
5430 | DestType = Method->getThisType(); |
5431 | FromClassification = Expr::Classification::makeSimpleLValue(); |
5432 | } else { |
5433 | FromRecordType = From->getType(); |
5434 | DestType = ImplicitParamRecordType; |
5435 | FromClassification = From->Classify(Context); |
5436 | |
5437 | |
5438 | if (From->isPRValue()) { |
5439 | From = CreateMaterializeTemporaryExpr(FromRecordType, From, |
5440 | Method->getRefQualifier() != |
5441 | RefQualifierKind::RQ_RValue); |
5442 | } |
5443 | } |
5444 | |
5445 | |
5446 | |
5447 | ImplicitConversionSequence ICS = TryObjectArgumentInitialization( |
5448 | *this, From->getBeginLoc(), From->getType(), FromClassification, Method, |
5449 | Method->getParent()); |
5450 | if (ICS.isBad()) { |
5451 | switch (ICS.Bad.Kind) { |
5452 | case BadConversionSequence::bad_qualifiers: { |
5453 | Qualifiers FromQs = FromRecordType.getQualifiers(); |
5454 | Qualifiers ToQs = DestType.getQualifiers(); |
5455 | unsigned CVR = FromQs.getCVRQualifiers() & ~ToQs.getCVRQualifiers(); |
5456 | if (CVR) { |
5457 | Diag(From->getBeginLoc(), diag::err_member_function_call_bad_cvr) |
5458 | << Method->getDeclName() << FromRecordType << (CVR - 1) |
5459 | << From->getSourceRange(); |
5460 | Diag(Method->getLocation(), diag::note_previous_decl) |
5461 | << Method->getDeclName(); |
5462 | return ExprError(); |
5463 | } |
5464 | break; |
5465 | } |
5466 | |
5467 | case BadConversionSequence::lvalue_ref_to_rvalue: |
5468 | case BadConversionSequence::rvalue_ref_to_lvalue: { |
5469 | bool IsRValueQualified = |
5470 | Method->getRefQualifier() == RefQualifierKind::RQ_RValue; |
5471 | Diag(From->getBeginLoc(), diag::err_member_function_call_bad_ref) |
5472 | << Method->getDeclName() << FromClassification.isRValue() |
5473 | << IsRValueQualified; |
5474 | Diag(Method->getLocation(), diag::note_previous_decl) |
5475 | << Method->getDeclName(); |
5476 | return ExprError(); |
5477 | } |
5478 | |
5479 | case BadConversionSequence::no_conversion: |
5480 | case BadConversionSequence::unrelated_class: |
5481 | break; |
5482 | } |
5483 | |
5484 | return Diag(From->getBeginLoc(), diag::err_member_function_call_bad_type) |
5485 | << ImplicitParamRecordType << FromRecordType |
5486 | << From->getSourceRange(); |
5487 | } |
5488 | |
5489 | if (ICS.Standard.Second == ICK_Derived_To_Base) { |
5490 | ExprResult FromRes = |
5491 | PerformObjectMemberConversion(From, Qualifier, FoundDecl, Method); |
5492 | if (FromRes.isInvalid()) |
5493 | return ExprError(); |
5494 | From = FromRes.get(); |
5495 | } |
5496 | |
5497 | if (!Context.hasSameType(From->getType(), DestType)) { |
5498 | CastKind CK; |
5499 | QualType PteeTy = DestType->getPointeeType(); |
5500 | LangAS DestAS = |
5501 | PteeTy.isNull() ? DestType.getAddressSpace() : PteeTy.getAddressSpace(); |
5502 | if (FromRecordType.getAddressSpace() != DestAS) |
5503 | CK = CK_AddressSpaceConversion; |
5504 | else |
5505 | CK = CK_NoOp; |
5506 | From = ImpCastExprToType(From, DestType, CK, From->getValueKind()).get(); |
5507 | } |
5508 | return From; |
5509 | } |
5510 | |
5511 | |
5512 | |
5513 | static ImplicitConversionSequence |
5514 | TryContextuallyConvertToBool(Sema &S, Expr *From) { |
5515 | |
5516 | |
5517 | |
5518 | |
5519 | if (From->getType()->isNullPtrType()) |
5520 | return ImplicitConversionSequence::getNullptrToBool(From->getType(), |
5521 | S.Context.BoolTy, |
5522 | From->isGLValue()); |
5523 | |
5524 | |
5525 | |
5526 | return TryImplicitConversion(S, From, S.Context.BoolTy, |
5527 | false, |
5528 | AllowedExplicit::Conversions, |
5529 | false, |
5530 | false, |
5531 | false, |
5532 | false); |
5533 | } |
5534 | |
5535 | |
5536 | |
5537 | ExprResult Sema::PerformContextuallyConvertToBool(Expr *From) { |
5538 | if (checkPlaceholderForOverload(*this, From)) |
5539 | return ExprError(); |
5540 | |
5541 | ImplicitConversionSequence ICS = TryContextuallyConvertToBool(*this, From); |
5542 | if (!ICS.isBad()) |
5543 | return PerformImplicitConversion(From, Context.BoolTy, ICS, AA_Converting); |
5544 | |
5545 | if (!DiagnoseMultipleUserDefinedConversion(From, Context.BoolTy)) |
5546 | return Diag(From->getBeginLoc(), diag::err_typecheck_bool_condition) |
5547 | << From->getType() << From->getSourceRange(); |
5548 | return ExprError(); |
5549 | } |
5550 | |
5551 | |
5552 | |
5553 | |
5554 | static bool CheckConvertedConstantConversions(Sema &S, |
5555 | StandardConversionSequence &SCS) { |
5556 | |
5557 | |
5558 | |
5559 | switch (SCS.Second) { |
5560 | case ICK_Identity: |
5561 | case ICK_Integral_Promotion: |
5562 | case ICK_Integral_Conversion: |
5563 | case ICK_Zero_Queue_Conversion: |
5564 | return true; |
5565 | |
5566 | case ICK_Boolean_Conversion: |
5567 | |
5568 | |
5569 | |
5570 | |
5571 | |
5572 | |
5573 | |
5574 | return SCS.getFromType()->isIntegralOrUnscopedEnumerationType() && |
5575 | SCS.getToType(2)->isBooleanType(); |
5576 | |
5577 | case ICK_Pointer_Conversion: |
5578 | case ICK_Pointer_Member: |
5579 | |
5580 | |
5581 | return SCS.getFromType()->isNullPtrType(); |
5582 | |
5583 | case ICK_Floating_Promotion: |
5584 | case ICK_Complex_Promotion: |
5585 | case ICK_Floating_Conversion: |
5586 | case ICK_Complex_Conversion: |
5587 | case ICK_Floating_Integral: |
5588 | case ICK_Compatible_Conversion: |
5589 | case ICK_Derived_To_Base: |
5590 | case ICK_Vector_Conversion: |
5591 | case ICK_SVE_Vector_Conversion: |
5592 | case ICK_Vector_Splat: |
5593 | case ICK_Complex_Real: |
5594 | case ICK_Block_Pointer_Conversion: |
5595 | case ICK_TransparentUnionConversion: |
5596 | case ICK_Writeback_Conversion: |
5597 | case ICK_Zero_Event_Conversion: |
5598 | case ICK_C_Only_Conversion: |
5599 | case ICK_Incompatible_Pointer_Conversion: |
5600 | return false; |
5601 | |
5602 | case ICK_Lvalue_To_Rvalue: |
5603 | case ICK_Array_To_Pointer: |
5604 | case ICK_Function_To_Pointer: |
5605 | llvm_unreachable("found a first conversion kind in Second"); |
5606 | |
5607 | case ICK_Function_Conversion: |
5608 | case ICK_Qualification: |
5609 | llvm_unreachable("found a third conversion kind in Second"); |
5610 | |
5611 | case ICK_Num_Conversion_Kinds: |
5612 | break; |
5613 | } |
5614 | |
5615 | llvm_unreachable("unknown conversion kind"); |
5616 | } |
5617 | |
5618 | |
5619 | |
5620 | |
5621 | static ExprResult CheckConvertedConstantExpression(Sema &S, Expr *From, |
5622 | QualType T, APValue &Value, |
5623 | Sema::CCEKind CCE, |
5624 | bool RequireInt, |
5625 | NamedDecl *Dest) { |
5626 | assert(S.getLangOpts().CPlusPlus11 && |
5627 | "converted constant expression outside C++11"); |
5628 | |
5629 | if (checkPlaceholderForOverload(S, From)) |
5630 | return ExprError(); |
5631 | |
5632 | |
5633 | |
5634 | |
5635 | |
5636 | |
5637 | ImplicitConversionSequence ICS = |
5638 | CCE == Sema::CCEK_ExplicitBool |
5639 | ? TryContextuallyConvertToBool(S, From) |
5640 | : TryCopyInitialization(S, From, T, |
5641 | false, |
5642 | false, |
5643 | false, |
5644 | false); |
5645 | StandardConversionSequence *SCS = nullptr; |
5646 | switch (ICS.getKind()) { |
5647 | case ImplicitConversionSequence::StandardConversion: |
5648 | SCS = &ICS.Standard; |
5649 | break; |
5650 | case ImplicitConversionSequence::UserDefinedConversion: |
5651 | if (T->isRecordType()) |
5652 | SCS = &ICS.UserDefined.Before; |
5653 | else |
5654 | SCS = &ICS.UserDefined.After; |
5655 | break; |
5656 | case ImplicitConversionSequence::AmbiguousConversion: |
5657 | case ImplicitConversionSequence::BadConversion: |
5658 | if (!S.DiagnoseMultipleUserDefinedConversion(From, T)) |
5659 | return S.Diag(From->getBeginLoc(), |
5660 | diag::err_typecheck_converted_constant_expression) |
5661 | << From->getType() << From->getSourceRange() << T; |
5662 | return ExprError(); |
5663 | |
5664 | case ImplicitConversionSequence::EllipsisConversion: |
5665 | llvm_unreachable("ellipsis conversion in converted constant expression"); |
5666 | } |
5667 | |
5668 | |
5669 | if (!CheckConvertedConstantConversions(S, *SCS)) { |
5670 | return S.Diag(From->getBeginLoc(), |
5671 | diag::err_typecheck_converted_constant_expression_disallowed) |
5672 | << From->getType() << From->getSourceRange() << T; |
5673 | } |
5674 | |
5675 | if (SCS->ReferenceBinding && !SCS->DirectBinding) { |
5676 | return S.Diag(From->getBeginLoc(), |
5677 | diag::err_typecheck_converted_constant_expression_indirect) |
5678 | << From->getType() << From->getSourceRange() << T; |
5679 | } |
5680 | |
5681 | |
5682 | |
5683 | |
5684 | ExprResult Result; |
5685 | if (T->isRecordType()) { |
5686 | assert(CCE == Sema::CCEK_TemplateArg && |
5687 | "unexpected class type converted constant expr"); |
5688 | Result = S.PerformCopyInitialization( |
5689 | InitializedEntity::InitializeTemplateParameter( |
5690 | T, cast<NonTypeTemplateParmDecl>(Dest)), |
5691 | SourceLocation(), From); |
5692 | } else { |
5693 | Result = S.PerformImplicitConversion(From, T, ICS, Sema::AA_Converting); |
5694 | } |
5695 | if (Result.isInvalid()) |
5696 | return Result; |
5697 | |
5698 | |
5699 | |
5700 | Result = |
5701 | S.ActOnFinishFullExpr(Result.get(), From->getExprLoc(), |
5702 | false, true); |
5703 | if (Result.isInvalid()) |
5704 | return Result; |
5705 | |
5706 | |
5707 | bool ReturnPreNarrowingValue = false; |
5708 | APValue PreNarrowingValue; |
5709 | QualType PreNarrowingType; |
5710 | switch (SCS->getNarrowingKind(S.Context, Result.get(), PreNarrowingValue, |
5711 | PreNarrowingType)) { |
5712 | case NK_Dependent_Narrowing: |
5713 | |
5714 | |
5715 | case NK_Variable_Narrowing: |
5716 | |
5717 | |
5718 | case NK_Not_Narrowing: |
5719 | break; |
5720 | |
5721 | case NK_Constant_Narrowing: |
5722 | if (CCE == Sema::CCEK_ArrayBound && |
5723 | PreNarrowingType->isIntegralOrEnumerationType() && |
5724 | PreNarrowingValue.isInt()) { |
5725 | |
5726 | |
5727 | ReturnPreNarrowingValue = true; |
5728 | break; |
5729 | } |
5730 | S.Diag(From->getBeginLoc(), diag::ext_cce_narrowing) |
5731 | << CCE << 1 |
5732 | << PreNarrowingValue.getAsString(S.Context, PreNarrowingType) << T; |
5733 | break; |
5734 | |
5735 | case NK_Type_Narrowing: |
5736 | |
5737 | |
5738 | S.Diag(From->getBeginLoc(), diag::ext_cce_narrowing) |
5739 | << CCE << 0 << From->getType() << T; |
5740 | break; |
5741 | } |
5742 | |
5743 | if (Result.get()->isValueDependent()) { |
5744 | Value = APValue(); |
5745 | return Result; |
5746 | } |
5747 | |
5748 | |
5749 | SmallVector<PartialDiagnosticAt, 8> Notes; |
5750 | Expr::EvalResult Eval; |
5751 | Eval.Diag = &Notes; |
5752 | |
5753 | ConstantExprKind Kind; |
5754 | if (CCE == Sema::CCEK_TemplateArg && T->isRecordType()) |
5755 | Kind = ConstantExprKind::ClassTemplateArgument; |
5756 | else if (CCE == Sema::CCEK_TemplateArg) |
5757 | Kind = ConstantExprKind::NonClassTemplateArgument; |
5758 | else |
5759 | Kind = ConstantExprKind::Normal; |
5760 | |
5761 | if (!Result.get()->EvaluateAsConstantExpr(Eval, S.Context, Kind) || |
5762 | (RequireInt && !Eval.Val.isInt())) { |
5763 | |
5764 | |
5765 | Result = ExprError(); |
5766 | } else { |
5767 | Value = Eval.Val; |
5768 | |
5769 | if (Notes.empty()) { |
5770 | |
5771 | Expr *E = ConstantExpr::Create(S.Context, Result.get(), Value); |
5772 | if (ReturnPreNarrowingValue) |
5773 | Value = std::move(PreNarrowingValue); |
5774 | return E; |
5775 | } |
5776 | } |
5777 | |
5778 | |
5779 | if (Notes.size() == 1 && |
5780 | Notes[0].second.getDiagID() == diag::note_invalid_subexpr_in_const_expr) { |
5781 | S.Diag(Notes[0].first, diag::err_expr_not_cce) << CCE; |
5782 | } else if (!Notes.empty() && Notes[0].second.getDiagID() == |
5783 | diag::note_constexpr_invalid_template_arg) { |
5784 | Notes[0].second.setDiagID(diag::err_constexpr_invalid_template_arg); |
5785 | for (unsigned I = 0; I < Notes.size(); ++I) |
5786 | S.Diag(Notes[I].first, Notes[I].second); |
5787 | } else { |
5788 | S.Diag(From->getBeginLoc(), diag::err_expr_not_cce) |
5789 | << CCE << From->getSourceRange(); |
5790 | for (unsigned I = 0; I < Notes.size(); ++I) |
5791 | S.Diag(Notes[I].first, Notes[I].second); |
5792 | } |
5793 | return ExprError(); |
5794 | } |
5795 | |
5796 | ExprResult Sema::CheckConvertedConstantExpression(Expr *From, QualType T, |
5797 | APValue &Value, CCEKind CCE, |
5798 | NamedDecl *Dest) { |
5799 | return ::CheckConvertedConstantExpression(*this, From, T, Value, CCE, false, |
5800 | Dest); |
5801 | } |
5802 | |
5803 | ExprResult Sema::CheckConvertedConstantExpression(Expr *From, QualType T, |
5804 | llvm::APSInt &Value, |
5805 | CCEKind CCE) { |
5806 | assert(T->isIntegralOrEnumerationType() && "unexpected converted const type"); |
5807 | |
5808 | APValue V; |
5809 | auto R = ::CheckConvertedConstantExpression(*this, From, T, V, CCE, true, |
5810 | nullptr); |
5811 | if (!R.isInvalid() && !R.get()->isValueDependent()) |
5812 | Value = V.getInt(); |
5813 | return R; |
5814 | } |
5815 | |
5816 | |
5817 | |
5818 | |
5819 | |
5820 | static void dropPointerConversion(StandardConversionSequence &SCS) { |
5821 | if (SCS.Second == ICK_Pointer_Conversion) { |
5822 | SCS.Second = ICK_Identity; |
5823 | SCS.Third = ICK_Identity; |
5824 | SCS.ToTypePtrs[2] = SCS.ToTypePtrs[1] = SCS.ToTypePtrs[0]; |
5825 | } |
5826 | } |
5827 | |
5828 | |
5829 | |
5830 | static ImplicitConversionSequence |
5831 | TryContextuallyConvertToObjCPointer(Sema &S, Expr *From) { |
5832 | |
5833 | QualType Ty = S.Context.getObjCIdType(); |
5834 | ImplicitConversionSequence ICS |
5835 | = TryImplicitConversion(S, From, Ty, |
5836 | |
5837 | false, |
5838 | AllowedExplicit::Conversions, |
5839 | false, |
5840 | false, |
5841 | false, |
5842 | true); |
5843 | |
5844 | |
5845 | switch (ICS.getKind()) { |
5846 | case ImplicitConversionSequence::BadConversion: |
5847 | case ImplicitConversionSequence::AmbiguousConversion: |
5848 | case ImplicitConversionSequence::EllipsisConversion: |
5849 | break; |
5850 | |
5851 | case ImplicitConversionSequence::UserDefinedConversion: |
5852 | dropPointerConversion(ICS.UserDefined.After); |
5853 | break; |
5854 | |
5855 | case ImplicitConversionSequence::StandardConversion: |
5856 | dropPointerConversion(ICS.Standard); |
5857 | break; |
5858 | } |
5859 | |
5860 | return ICS; |
5861 | } |
5862 | |
5863 | |
5864 | |
5865 | |
5866 | ExprResult Sema::PerformContextuallyConvertToObjCPointer(Expr *From) { |
5867 | if (checkPlaceholderForOverload(*this, From)) |
5868 | return ExprError(); |
5869 | |
5870 | QualType Ty = Context.getObjCIdType(); |
5871 | ImplicitConversionSequence ICS = |
5872 | TryContextuallyConvertToObjCPointer(*this, From); |
5873 | if (!ICS.isBad()) |
5874 | return PerformImplicitConversion(From, Ty, ICS, AA_Converting); |
5875 | return ExprResult(); |
5876 | } |
5877 | |
5878 | |
5879 | |
5880 | bool Sema::ICEConvertDiagnoser::match(QualType T) { |
5881 | return AllowScopedEnumerations ? T->isIntegralOrEnumerationType() |
5882 | : T->isIntegralOrUnscopedEnumerationType(); |
5883 | } |
5884 | |
5885 | static ExprResult |
5886 | diagnoseAmbiguousConversion(Sema &SemaRef, SourceLocation Loc, Expr *From, |
5887 | Sema::ContextualImplicitConverter &Converter, |
5888 | QualType T, UnresolvedSetImpl &ViableConversions) { |
5889 | |
5890 | if (Converter.Suppress) |
5891 | return ExprError(); |
5892 | |
5893 | Converter.diagnoseAmbiguous(SemaRef, Loc, T) << From->getSourceRange(); |
5894 | for (unsigned I = 0, N = ViableConversions.size(); I != N; ++I) { |
5895 | CXXConversionDecl *Conv = |
5896 | cast<CXXConversionDecl>(ViableConversions[I]->getUnderlyingDecl()); |
5897 | QualType ConvTy = Conv->getConversionType().getNonReferenceType(); |
5898 | Converter.noteAmbiguous(SemaRef, Conv, ConvTy); |
5899 | } |
5900 | return From; |
5901 | } |
5902 | |
5903 | static bool |
5904 | diagnoseNoViableConversion(Sema &SemaRef, SourceLocation Loc, Expr *&From, |
5905 | Sema::ContextualImplicitConverter &Converter, |
5906 | QualType T, bool HadMultipleCandidates, |
5907 | UnresolvedSetImpl &ExplicitConversions) { |
5908 | if (ExplicitConversions.size() == 1 && !Converter.Suppress) { |
5909 | DeclAccessPair Found = ExplicitConversions[0]; |
5910 | CXXConversionDecl *Conversion = |
5911 | cast<CXXConversionDecl>(Found->getUnderlyingDecl()); |
5912 | |
5913 | |
5914 | |
5915 | QualType ConvTy = Conversion->getConversionType().getNonReferenceType(); |
5916 | std::string TypeStr; |
5917 | ConvTy.getAsStringInternal(TypeStr, SemaRef.getPrintingPolicy()); |
5918 | |
5919 | Converter.diagnoseExplicitConv(SemaRef, Loc, T, ConvTy) |
5920 | << FixItHint::CreateInsertion(From->getBeginLoc(), |
5921 | "static_cast<" + TypeStr + ">(") |
5922 | << FixItHint::CreateInsertion( |
5923 | SemaRef.getLocForEndOfToken(From->getEndLoc()), ")"); |
5924 | Converter.noteExplicitConv(SemaRef, Conversion, ConvTy); |
5925 | |
5926 | |
5927 | |
5928 | if (SemaRef.isSFINAEContext()) |
5929 | return true; |
5930 | |
5931 | SemaRef.CheckMemberOperatorAccess(From->getExprLoc(), From, nullptr, Found); |
5932 | ExprResult Result = SemaRef.BuildCXXMemberCallExpr(From, Found, Conversion, |
5933 | HadMultipleCandidates); |
5934 | if (Result.isInvalid()) |
5935 | return true; |
5936 | |
5937 | From = ImplicitCastExpr::Create(SemaRef.Context, Result.get()->getType(), |
5938 | CK_UserDefinedConversion, Result.get(), |
5939 | nullptr, Result.get()->getValueKind(), |
5940 | SemaRef.CurFPFeatureOverrides()); |
5941 | } |
5942 | return false; |
5943 | } |
5944 | |
5945 | static bool recordConversion(Sema &SemaRef, SourceLocation Loc, Expr *&From, |
5946 | Sema::ContextualImplicitConverter &Converter, |
5947 | QualType T, bool HadMultipleCandidates, |
5948 | DeclAccessPair &Found) { |
5949 | CXXConversionDecl *Conversion = |
5950 | cast<CXXConversionDecl>(Found->getUnderlyingDecl()); |
5951 | SemaRef.CheckMemberOperatorAccess(From->getExprLoc(), From, nullptr, Found); |
5952 | |
5953 | QualType ToType = Conversion->getConversionType().getNonReferenceType(); |
5954 | if (!Converter.SuppressConversion) { |
5955 | if (SemaRef.isSFINAEContext()) |
5956 | return true; |
5957 | |
5958 | Converter.diagnoseConversion(SemaRef, Loc, T, ToType) |
5959 | << From->getSourceRange(); |
5960 | } |
5961 | |
5962 | ExprResult Result = SemaRef.BuildCXXMemberCallExpr(From, Found, Conversion, |
5963 | HadMultipleCandidates); |
5964 | if (Result.isInvalid()) |
5965 | return true; |
5966 | |
5967 | From = ImplicitCastExpr::Create(SemaRef.Context, Result.get()->getType(), |
5968 | CK_UserDefinedConversion, Result.get(), |
5969 | nullptr, Result.get()->getValueKind(), |
5970 | SemaRef.CurFPFeatureOverrides()); |
5971 | return false; |
5972 | } |
5973 | |
5974 | static ExprResult finishContextualImplicitConversion( |
5975 | Sema &SemaRef, SourceLocation Loc, Expr *From, |
5976 | Sema::ContextualImplicitConverter &Converter) { |
5977 | if (!Converter.match(From->getType()) && !Converter.Suppress) |
5978 | Converter.diagnoseNoMatch(SemaRef, Loc, From->getType()) |
5979 | << From->getSourceRange(); |
5980 | |
5981 | return SemaRef.DefaultLvalueConversion(From); |
5982 | } |
5983 | |
5984 | static void |
5985 | collectViableConversionCandidates(Sema &SemaRef, Expr *From, QualType ToType, |
5986 | UnresolvedSetImpl &ViableConversions, |
5987 | OverloadCandidateSet &CandidateSet) { |
5988 | for (unsigned I = 0, N = ViableConversions.size(); I != N; ++I) { |
5989 | DeclAccessPair FoundDecl = ViableConversions[I]; |
5990 | NamedDecl *D = FoundDecl.getDecl(); |
5991 | CXXRecordDecl *ActingContext = cast<CXXRecordDecl>(D->getDeclContext()); |
5992 | if (isa<UsingShadowDecl>(D)) |
5993 | D = cast<UsingShadowDecl>(D)->getTargetDecl(); |
5994 | |
5995 | CXXConversionDecl *Conv; |
5996 | FunctionTemplateDecl *ConvTemplate; |
5997 | if ((ConvTemplate = dyn_cast<FunctionTemplateDecl>(D))) |
5998 | Conv = cast<CXXConversionDecl>(ConvTemplate->getTemplatedDecl()); |
5999 | else |
6000 | Conv = cast<CXXConversionDecl>(D); |
6001 | |
6002 | if (ConvTemplate) |
6003 | SemaRef.AddTemplateConversionCandidate( |
6004 | ConvTemplate, FoundDecl, ActingContext, From, ToType, CandidateSet, |
6005 | false, true); |
6006 | else |
6007 | SemaRef.AddConversionCandidate(Conv, FoundDecl, ActingContext, From, |
6008 | ToType, CandidateSet, |
6009 | false, |
6010 | true); |
6011 | } |
6012 | } |
6013 | |
6014 | |
6015 | |
6016 | |
6017 | |
6018 | |
6019 | |
6020 | |
6021 | |
6022 | |
6023 | |
6024 | |
6025 | |
6026 | |
6027 | |
6028 | |
6029 | |
6030 | |
6031 | |
6032 | ExprResult Sema::PerformContextualImplicitConversion( |
6033 | SourceLocation Loc, Expr *From, ContextualImplicitConverter &Converter) { |
6034 | |
6035 | if (From->isTypeDependent()) |
6036 | return From; |
6037 | |
6038 | |
6039 | if (From->hasPlaceholderType()) { |
6040 | ExprResult result = CheckPlaceholderExpr(From); |
6041 | if (result.isInvalid()) |
6042 | return result; |
6043 | From = result.get(); |
6044 | } |
6045 | |
6046 | |
6047 | QualType T = From->getType(); |
6048 | if (Converter.match(T)) |
6049 | return DefaultLvalueConversion(From); |
6050 | |
6051 | |
6052 | |
6053 | |
6054 | |
6055 | const RecordType *RecordTy = T->getAs<RecordType>(); |
6056 | if (!RecordTy || !getLangOpts().CPlusPlus) { |
6057 | if (!Converter.Suppress) |
6058 | Converter.diagnoseNoMatch(*this, Loc, T) << From->getSourceRange(); |
6059 | return From; |
6060 | } |
6061 | |
6062 | |
6063 | struct TypeDiagnoserPartialDiag : TypeDiagnoser { |
6064 | ContextualImplicitConverter &Converter; |
6065 | Expr *From; |
6066 | |
6067 | TypeDiagnoserPartialDiag(ContextualImplicitConverter &Converter, Expr *From) |
6068 | : Converter(Converter), From(From) {} |
6069 | |
6070 | void diagnose(Sema &S, SourceLocation Loc, QualType T) override { |
6071 | Converter.diagnoseIncomplete(S, Loc, T) << From->getSourceRange(); |
6072 | } |
6073 | } IncompleteDiagnoser(Converter, From); |
6074 | |
6075 | if (Converter.Suppress ? !isCompleteType(Loc, T) |
6076 | : RequireCompleteType(Loc, T, IncompleteDiagnoser)) |
6077 | return From; |
6078 | |
6079 | |
6080 | UnresolvedSet<4> |
6081 | ViableConversions; |
6082 | UnresolvedSet<4> ExplicitConversions; |
6083 | const auto &Conversions = |
6084 | cast<CXXRecordDecl>(RecordTy->getDecl())->getVisibleConversionFunctions(); |
6085 | |
6086 | bool HadMultipleCandidates = |
6087 | (std::distance(Conversions.begin(), Conversions.end()) > 1); |
6088 | |
6089 | |
6090 | QualType ToType; |
6091 | bool HasUniqueTargetType = true; |
6092 | |
6093 | |
6094 | for (auto I = Conversions.begin(), E = Conversions.end(); I != E; ++I) { |
6095 | NamedDecl *D = (*I)->getUnderlyingDecl(); |
6096 | CXXConversionDecl *Conversion; |
6097 | FunctionTemplateDecl *ConvTemplate = dyn_cast<FunctionTemplateDecl>(D); |
6098 | if (ConvTemplate) { |
6099 | if (getLangOpts().CPlusPlus14) |
6100 | Conversion = cast<CXXConversionDecl>(ConvTemplate->getTemplatedDecl()); |
6101 | else |
6102 | continue; |
6103 | } else |
6104 | Conversion = cast<CXXConversionDecl>(D); |
6105 | |
6106 | assert((!ConvTemplate || getLangOpts().CPlusPlus14) && |
6107 | "Conversion operator templates are considered potentially " |
6108 | "viable in C++1y"); |
6109 | |
6110 | QualType CurToType = Conversion->getConversionType().getNonReferenceType(); |
6111 | if (Converter.match(CurToType) || ConvTemplate) { |
6112 | |
6113 | if (Conversion->isExplicit()) { |
6114 | |
6115 | |
6116 | if (!ConvTemplate) |
6117 | ExplicitConversions.addDecl(I.getDecl(), I.getAccess()); |
6118 | } else { |
6119 | if (!ConvTemplate && getLangOpts().CPlusPlus14) { |
6120 | if (ToType.isNull()) |
6121 | ToType = CurToType.getUnqualifiedType(); |
6122 | else if (HasUniqueTargetType && |
6123 | (CurToType.getUnqualifiedType() != ToType)) |
6124 | HasUniqueTargetType = false; |
6125 | } |
6126 | ViableConversions.addDecl(I.getDecl(), I.getAccess()); |
6127 | } |
6128 | } |
6129 | } |
6130 | |
6131 | if (getLangOpts().CPlusPlus14) { |
6132 | |
6133 | |
6134 | |
6135 | |
6136 | |
6137 | |
6138 | |
6139 | |
6140 | |
6141 | |
6142 | if (ToType.isNull()) { |
6143 | if (diagnoseNoViableConversion(*this, Loc, From, Converter, T, |
6144 | HadMultipleCandidates, |
6145 | ExplicitConversions)) |
6146 | return ExprError(); |
6147 | return finishContextualImplicitConversion(*this, Loc, From, Converter); |
6148 | } |
6149 | |
6150 | |
6151 | if (!HasUniqueTargetType) |
6152 | return diagnoseAmbiguousConversion(*this, Loc, From, Converter, T, |
6153 | ViableConversions); |
6154 | |
6155 | |
6156 | |
6157 | |
6158 | OverloadCandidateSet CandidateSet(Loc, OverloadCandidateSet::CSK_Normal); |
6159 | collectViableConversionCandidates(*this, From, ToType, ViableConversions, |
6160 | CandidateSet); |
6161 | |
6162 | |
6163 | OverloadCandidateSet::iterator Best; |
6164 | switch (CandidateSet.BestViableFunction(*this, Loc, Best)) { |
6165 | case OR_Success: { |
6166 | |
6167 | DeclAccessPair Found = |
6168 | DeclAccessPair::make(Best->Function, Best->FoundDecl.getAccess()); |
6169 | if (recordConversion(*this, Loc, From, Converter, T, |
6170 | HadMultipleCandidates, Found)) |
6171 | return ExprError(); |
6172 | break; |
6173 | } |
6174 | case OR_Ambiguous: |
6175 | return diagnoseAmbiguousConversion(*this, Loc, From, Converter, T, |
6176 | ViableConversions); |
6177 | case OR_No_Viable_Function: |
6178 | if (diagnoseNoViableConversion(*this, Loc, From, Converter, T, |
6179 | HadMultipleCandidates, |
6180 | ExplicitConversions)) |
6181 | return ExprError(); |
6182 | LLVM_FALLTHROUGH; |
6183 | case OR_Deleted: |
6184 | |
6185 | break; |
6186 | } |
6187 | } else { |
6188 | switch (ViableConversions.size()) { |
6189 | case 0: { |
6190 | if (diagnoseNoViableConversion(*this, Loc, From, Converter, T, |
6191 | HadMultipleCandidates, |
6192 | ExplicitConversions)) |
6193 | return ExprError(); |
6194 | |
6195 | |
6196 | break; |
6197 | } |
6198 | case 1: { |
6199 | |
6200 | DeclAccessPair Found = ViableConversions[0]; |
6201 | if (recordConversion(*this, Loc, From, Converter, T, |
6202 | HadMultipleCandidates, Found)) |
6203 | return ExprError(); |
6204 | break; |
6205 | } |
6206 | default: |
6207 | return diagnoseAmbiguousConversion(*this, Loc, From, Converter, T, |
6208 | ViableConversions); |
6209 | } |
6210 | } |
6211 | |
6212 | return finishContextualImplicitConversion(*this, Loc, From, Converter); |
6213 | } |
6214 | |
6215 | |
6216 | |
6217 | |
6218 | |
6219 | |
6220 | static bool IsAcceptableNonMemberOperatorCandidate(ASTContext &Context, |
6221 | FunctionDecl *Fn, |
6222 | ArrayRef<Expr *> Args) { |
6223 | QualType T1 = Args[0]->getType(); |
6224 | QualType T2 = Args.size() > 1 ? Args[1]->getType() : QualType(); |
6225 | |
6226 | if (T1->isDependentType() || (!T2.isNull() && T2->isDependentType())) |
6227 | return true; |
6228 | |
6229 | if (T1->isRecordType() || (!T2.isNull() && T2->isRecordType())) |
6230 | return true; |
6231 | |
6232 | const auto *Proto = Fn->getType()->castAs<FunctionProtoType>(); |
6233 | if (Proto->getNumParams() < 1) |
6234 | return false; |
6235 | |
6236 | if (T1->isEnumeralType()) { |
6237 | QualType ArgType = Proto->getParamType(0).getNonReferenceType(); |
6238 | if (Context.hasSameUnqualifiedType(T1, ArgType)) |
6239 | return true; |
6240 | } |
6241 | |
6242 | if (Proto->getNumParams() < 2) |
6243 | return false; |
6244 | |
6245 | if (!T2.isNull() && T2->isEnumeralType()) { |
6246 | QualType ArgType = Proto->getParamType(1).getNonReferenceType(); |
6247 | if (Context.hasSameUnqualifiedType(T2, ArgType)) |
6248 | return true; |
6249 | } |
6250 | |
6251 | return false; |
6252 | } |
6253 | |
6254 | |
6255 | |
6256 | |
6257 | |
6258 | |
6259 | |
6260 | |
6261 | |
6262 | void Sema::AddOverloadCandidate( |
6263 | FunctionDecl *Function, DeclAccessPair FoundDecl, ArrayRef<Expr *> Args, |
6264 | OverloadCandidateSet &CandidateSet, bool SuppressUserConversions, |
6265 | bool PartialOverloading, bool AllowExplicit, bool AllowExplicitConversions, |
6266 | ADLCallKind IsADLCandidate, ConversionSequenceList EarlyConversions, |
6267 | OverloadCandidateParamOrder PO) { |
6268 | const FunctionProtoType *Proto |
6269 | = dyn_cast<FunctionProtoType>(Function->getType()->getAs<FunctionType>()); |
6270 | assert(Proto && "Functions without a prototype cannot be overloaded"); |
6271 | assert(!Function->getDescribedFunctionTemplate() && |
6272 | "Use AddTemplateOverloadCandidate for function templates"); |
6273 | |
6274 | if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(Function)) { |
6275 | if (!isa<CXXConstructorDecl>(Method)) { |
6276 | |
6277 | |
6278 | |
6279 | |
6280 | |
6281 | |
6282 | |
6283 | AddMethodCandidate(Method, FoundDecl, Method->getParent(), QualType(), |
6284 | Expr::Classification::makeSimpleLValue(), Args, |
6285 | CandidateSet, SuppressUserConversions, |
6286 | PartialOverloading, EarlyConversions, PO); |
6287 | return; |
6288 | } |
6289 | |
6290 | |
6291 | } |
6292 | |
6293 | if (!CandidateSet.isNewCandidate(Function, PO)) |
6294 | return; |
6295 | |
6296 | |
6297 | |
6298 | |
6299 | CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(Function); |
6300 | if (Constructor && Constructor->isDefaulted() && Constructor->isDeleted() && |
6301 | Constructor->isMoveConstructor()) |
6302 | return; |
6303 | |
6304 | |
6305 | EnterExpressionEvaluationContext Unevaluated( |
6306 | *this, Sema::ExpressionEvaluationContext::Unevaluated); |
6307 | |
6308 | |
6309 | |
6310 | |
6311 | |
6312 | |
6313 | |
6314 | |
6315 | if (CandidateSet.getKind() == OverloadCandidateSet::CSK_Operator && |
6316 | !IsAcceptableNonMemberOperatorCandidate(Context, Function, Args)) |
6317 | return; |
6318 | |
6319 | |
6320 | OverloadCandidate &Candidate = |
6321 | CandidateSet.addCandidate(Args.size(), EarlyConversions); |
6322 | Candidate.FoundDecl = FoundDecl; |
6323 | Candidate.Function = Function; |
6324 | Candidate.Viable = true; |
6325 | Candidate.RewriteKind = |
6326 | CandidateSet.getRewriteInfo().getRewriteKind(Function, PO); |
6327 | Candidate.IsSurrogate = false; |
6328 | Candidate.IsADLCandidate = IsADLCandidate; |
6329 | Candidate.IgnoreObjectArgument = false; |
6330 | Candidate.ExplicitCallArguments = Args.size(); |
6331 | |
6332 | |
6333 | |
6334 | |
6335 | if (!AllowExplicit && ExplicitSpecifier::getFromDecl(Function).isExplicit()) { |
6336 | Candidate.Viable = false; |
6337 | Candidate.FailureKind = ovl_fail_explicit; |
6338 | return; |
6339 | } |
6340 | |
6341 | if (Function->isMultiVersion() && Function->hasAttr<TargetAttr>() && |
6342 | !Function->getAttr<TargetAttr>()->isDefaultVersion()) { |
6343 | Candidate.Viable = false; |
6344 | Candidate.FailureKind = ovl_non_default_multiversion_function; |
6345 | return; |
6346 | } |
6347 | |
6348 | if (Constructor) { |
6349 | |
6350 | |
6351 | |
6352 | QualType ClassType = Context.getTypeDeclType(Constructor->getParent()); |
6353 | if (Args.size() == 1 && Constructor->isSpecializationCopyingObject() && |
6354 | (Context.hasSameUnqualifiedType(ClassType, Args[0]->getType()) || |
6355 | IsDerivedFrom(Args[0]->getBeginLoc(), Args[0]->getType(), |
6356 | ClassType))) { |
6357 | Candidate.Viable = false; |
6358 | Candidate.FailureKind = ovl_fail_illegal_constructor; |
6359 | return; |
6360 | } |
6361 | |
6362 | |
6363 | |
6364 | |
6365 | |
6366 | |
6367 | |
6368 | |
6369 | auto *Shadow = dyn_cast<ConstructorUsingShadowDecl>(FoundDecl.getDecl()); |
6370 | if (Shadow && Args.size() == 1 && Constructor->getNumParams() >= 1 && |
6371 | Constructor->getParamDecl(0)->getType()->isReferenceType()) { |
6372 | QualType P = Constructor->getParamDecl(0)->getType()->getPointeeType(); |
6373 | QualType C = Context.getRecordType(Constructor->getParent()); |
6374 | QualType D = Context.getRecordType(Shadow->getParent()); |
6375 | SourceLocation Loc = Args.front()->getExprLoc(); |
6376 | if ((Context.hasSameUnqualifiedType(P, C) || IsDerivedFrom(Loc, P, C)) && |
6377 | (Context.hasSameUnqualifiedType(D, P) || IsDerivedFrom(Loc, D, P))) { |
6378 | Candidate.Viable = false; |
6379 | Candidate.FailureKind = ovl_fail_inhctor_slice; |
6380 | return; |
6381 | } |
6382 | } |
6383 | |
6384 | |
6385 | |
6386 | if (!Qualifiers::isAddressSpaceSupersetOf( |
6387 | Constructor->getMethodQualifiers().getAddressSpace(), |
6388 | CandidateSet.getDestAS())) { |
6389 | Candidate.Viable = false; |
6390 | Candidate.FailureKind = ovl_fail_object_addrspace_mismatch; |
6391 | } |
6392 | } |
6393 | |
6394 | unsigned NumParams = Proto->getNumParams(); |
6395 | |
6396 | |
6397 | |
6398 | |
6399 | if (TooManyArguments(NumParams, Args.size(), PartialOverloading) && |
6400 | !Proto->isVariadic()) { |
6401 | Candidate.Viable = false; |
6402 | Candidate.FailureKind = ovl_fail_too_many_arguments; |
6403 | return; |
6404 | } |
6405 | |
6406 | |
6407 | |
6408 | |
6409 | |
6410 | |
6411 | unsigned MinRequiredArgs = Function->getMinRequiredArguments(); |
6412 | if (Args.size() < MinRequiredArgs && !PartialOverloading) { |
6413 | |
6414 | Candidate.Viable = false; |
6415 | Candidate.FailureKind = ovl_fail_too_few_arguments; |
6416 | return; |
6417 | } |
6418 | |
6419 | |
6420 | if (getLangOpts().CUDA) |
6421 | if (const FunctionDecl *Caller = dyn_cast<FunctionDecl>(CurContext)) |
6422 | |
6423 | |
6424 | |
6425 | |
6426 | if (!Caller->isImplicit() && !IsAllowedCUDACall(Caller, Function)) { |
6427 | Candidate.Viable = false; |
6428 | Candidate.FailureKind = ovl_fail_bad_target; |
6429 | return; |
6430 | } |
6431 | |
6432 | if (Function->getTrailingRequiresClause()) { |
6433 | ConstraintSatisfaction Satisfaction; |
6434 | if (CheckFunctionConstraints(Function, Satisfaction) || |
6435 | !Satisfaction.IsSatisfied) { |
6436 | Candidate.Viable = false; |
6437 | Candidate.FailureKind = ovl_fail_constraints_not_satisfied; |
6438 | return; |
6439 | } |
6440 | } |
6441 | |
6442 | |
6443 | |
6444 | for (unsigned ArgIdx = 0; ArgIdx < Args.size(); ++ArgIdx) { |
6445 | unsigned ConvIdx = |
6446 | PO == OverloadCandidateParamOrder::Reversed ? 1 - ArgIdx : ArgIdx; |
6447 | if (Candidate.Conversions[ConvIdx].isInitialized()) { |
6448 | |
6449 | |
6450 | } else if (ArgIdx < NumParams) { |
6451 | |
6452 | |
6453 | |
6454 | |
6455 | QualType ParamType = Proto->getParamType(ArgIdx); |
6456 | Candidate.Conversions[ConvIdx] = TryCopyInitialization( |
6457 | *this, Args[ArgIdx], ParamType, SuppressUserConversions, |
6458 | true, |
6459 | |
6460 | getLangOpts().ObjCAutoRefCount, AllowExplicitConversions); |
6461 | if (Candidate.Conversions[ConvIdx].isBad()) { |
6462 | Candidate.Viable = false; |
6463 | Candidate.FailureKind = ovl_fail_bad_conversion; |
6464 | return; |
6465 | } |
6466 | } else { |
6467 | |
6468 | |
6469 | |
6470 | Candidate.Conversions[ConvIdx].setEllipsis(); |
6471 | } |
6472 | } |
6473 | |
6474 | if (EnableIfAttr *FailedAttr = |
6475 | CheckEnableIf(Function, CandidateSet.getLocation(), Args)) { |
6476 | Candidate.Viable = false; |
6477 | Candidate.FailureKind = ovl_fail_enable_if; |
6478 | Candidate.DeductionFailure.Data = FailedAttr; |
6479 | return; |
6480 | } |
6481 | } |
6482 | |
6483 | ObjCMethodDecl * |
6484 | Sema::SelectBestMethod(Selector Sel, MultiExprArg Args, bool IsInstance, |
6485 | SmallVectorImpl<ObjCMethodDecl *> &Methods) { |
6486 | if (Methods.size() <= 1) |
6487 | return nullptr; |
6488 | |
6489 | for (unsigned b = 0, e = Methods.size(); b < e; b++) { |
6490 | bool Match = true; |
6491 | ObjCMethodDecl *Method = Methods[b]; |
6492 | unsigned NumNamedArgs = Sel.getNumArgs(); |
6493 | |
6494 | |
6495 | if (Method->param_size() > NumNamedArgs) |
6496 | NumNamedArgs = Method->param_size(); |
6497 | if (Args.size() < NumNamedArgs) |
6498 | continue; |
6499 | |
6500 | for (unsigned i = 0; i < NumNamedArgs; i++) { |
6501 | |
6502 | if (Args[i]->isTypeDependent()) { |
6503 | Match = false; |
6504 | break; |
6505 | } |
6506 | |
6507 | ParmVarDecl *param = Method->parameters()[i]; |
6508 | Expr *argExpr = Args[i]; |
6509 | assert(argExpr && "SelectBestMethod(): missing expression"); |
6510 | |
6511 | |
6512 | |
6513 | if (argExpr->hasPlaceholderType(BuiltinType::ARCUnbridgedCast) && |
6514 | !param->hasAttr<CFConsumedAttr>()) |
6515 | argExpr = stripARCUnbridgedCast(argExpr); |
6516 | |
6517 | |
6518 | if (param->getType() == Context.UnknownAnyTy) { |
6519 | Match = false; |
6520 | break; |
6521 | } |
6522 | |
6523 | ImplicitConversionSequence ConversionState |
6524 | = TryCopyInitialization(*this, argExpr, param->getType(), |
6525 | false, |
6526 | true, |
6527 | |
6528 | getLangOpts().ObjCAutoRefCount, |
6529 | false); |
6530 | |
6531 | |
6532 | if (ConversionState.isBad() || |
6533 | (ConversionState.isStandard() && |
6534 | ConversionState.Standard.Second == |
6535 | ICK_Incompatible_Pointer_Conversion)) { |
6536 | Match = false; |
6537 | break; |
6538 | } |
6539 | } |
6540 | |
6541 | if (Match && Method->isVariadic()) { |
6542 | for (unsigned i = NumNamedArgs, e = Args.size(); i < e; ++i) { |
6543 | if (Args[i]->isTypeDependent()) { |
6544 | Match = false; |
6545 | break; |
6546 | } |
6547 | ExprResult Arg = DefaultVariadicArgumentPromotion(Args[i], VariadicMethod, |
6548 | nullptr); |
6549 | if (Arg.isInvalid()) { |
6550 | Match = false; |
6551 | break; |
6552 | } |
6553 | } |
6554 | } else { |
6555 | |
6556 | if (Args.size() != NumNamedArgs) |
6557 | Match = false; |
6558 | else if (Match && NumNamedArgs == 0 && Methods.size() > 1) { |
6559 | |
6560 | |
6561 | for (unsigned b = 0, e = Methods.size(); b < e; b++) { |
6562 | QualType ReturnT = Methods[b]->getReturnType(); |
6563 | if (ReturnT->isObjCIdType()) |
6564 | return Methods[b]; |
6565 | } |
6566 | } |
6567 | } |
6568 | |
6569 | if (Match) |
6570 | return Method; |
6571 | } |
6572 | return nullptr; |
6573 | } |
6574 | |
6575 | static bool convertArgsForAvailabilityChecks( |
6576 | Sema &S, FunctionDecl *Function, Expr *ThisArg, SourceLocation CallLoc, |
6577 | ArrayRef<Expr *> Args, Sema::SFINAETrap &Trap, bool MissingImplicitThis, |
6578 | Expr *&ConvertedThis, SmallVectorImpl<Expr *> &ConvertedArgs) { |
6579 | if (ThisArg) { |
6580 | CXXMethodDecl *Method = cast<CXXMethodDecl>(Function); |
6581 | assert(!isa<CXXConstructorDecl>(Method) && |
6582 | "Shouldn't have `this` for ctors!"); |
6583 | assert(!Method->isStatic() && "Shouldn't have `this` for static methods!"); |
6584 | ExprResult R = S.PerformObjectArgumentInitialization( |
6585 | ThisArg, nullptr, Method, Method); |
6586 | if (R.isInvalid()) |
6587 | return false; |
6588 | ConvertedThis = R.get(); |
6589 | } else { |
6590 | if (auto *MD = dyn_cast<CXXMethodDecl>(Function)) { |
6591 | (void)MD; |
6592 | assert((MissingImplicitThis || MD->isStatic() || |
6593 | isa<CXXConstructorDecl>(MD)) && |
6594 | "Expected `this` for non-ctor instance methods"); |
6595 | } |
6596 | ConvertedThis = nullptr; |
6597 | } |
6598 | |
6599 | |
6600 | |
6601 | unsigned ArgSizeNoVarargs = std::min(Function->param_size(), Args.size()); |
6602 | |
6603 | |
6604 | for (unsigned I = 0; I != ArgSizeNoVarargs; ++I) { |
6605 | ExprResult R; |
6606 | R = S.PerformCopyInitialization(InitializedEntity::InitializeParameter( |
6607 | S.Context, Function->getParamDecl(I)), |
6608 | SourceLocation(), Args[I]); |
6609 | |
6610 | if (R.isInvalid()) |
6611 | return false; |
6612 | |
6613 | ConvertedArgs.push_back(R.get()); |
6614 | } |
6615 | |
6616 | if (Trap.hasErrorOccurred()) |
6617 | return false; |
6618 | |
6619 | |
6620 | if (!Function->isVariadic() && Args.size() < Function->getNumParams()) { |
6621 | for (unsigned i = Args.size(), e = Function->getNumParams(); i != e; ++i) { |
6622 | ParmVarDecl *P = Function->getParamDecl(i); |
6623 | if (!P->hasDefaultArg()) |
6624 | return false; |
6625 | ExprResult R = S.BuildCXXDefaultArgExpr(CallLoc, Function, P); |
6626 | if (R.isInvalid()) |
6627 | return false; |
6628 | ConvertedArgs.push_back(R.get()); |
6629 | } |
6630 | |
6631 | if (Trap.hasErrorOccurred()) |
6632 | return false; |
6633 | } |
6634 | return true; |
6635 | } |
6636 | |
6637 | EnableIfAttr *Sema::CheckEnableIf(FunctionDecl *Function, |
6638 | SourceLocation CallLoc, |
6639 | ArrayRef<Expr *> Args, |
6640 | bool MissingImplicitThis) { |
6641 | auto EnableIfAttrs = Function->specific_attrs<EnableIfAttr>(); |
6642 | if (EnableIfAttrs.begin() == EnableIfAttrs.end()) |
6643 | return nullptr; |
6644 | |
6645 | SFINAETrap Trap(*this); |
6646 | SmallVector<Expr *, 16> ConvertedArgs; |
6647 | |
6648 | Expr *DiscardedThis; |
6649 | if (!convertArgsForAvailabilityChecks( |
6650 | *this, Function, nullptr, CallLoc, Args, Trap, |
6651 | true, DiscardedThis, ConvertedArgs)) |
6652 | return *EnableIfAttrs.begin(); |
6653 | |
6654 | for (auto *EIA : EnableIfAttrs) { |
6655 | APValue Result; |
6656 | |
6657 | |
6658 | if (EIA->getCond()->isValueDependent() || |
6659 | !EIA->getCond()->EvaluateWithSubstitution( |
6660 | Result, Context, Function, llvm::makeArrayRef(ConvertedArgs))) |
6661 | return EIA; |
6662 | |
6663 | if (!Result.isInt() || !Result.getInt().getBoolValue()) |
6664 | return EIA; |
6665 | } |
6666 | return nullptr; |
6667 | } |
6668 | |
6669 | template <typename CheckFn> |
6670 | static bool diagnoseDiagnoseIfAttrsWith(Sema &S, const NamedDecl *ND, |
6671 | bool ArgDependent, SourceLocation Loc, |
6672 | CheckFn &&IsSuccessful) { |
6673 | SmallVector<const DiagnoseIfAttr *, 8> Attrs; |
6674 | for (const auto *DIA : ND->specific_attrs<DiagnoseIfAttr>()) { |
6675 | if (ArgDependent == DIA->getArgDependent()) |
6676 | Attrs.push_back(DIA); |
6677 | } |
6678 | |
6679 | |
6680 | if (Attrs.empty()) |
6681 | return false; |
6682 | |
6683 | auto WarningBegin = std::stable_partition( |
6684 | Attrs.begin(), Attrs.end(), |
6685 | [](const DiagnoseIfAttr *DIA) { return DIA->isError(); }); |
6686 | |
6687 | |
6688 | |
6689 | auto ErrAttr = llvm::find_if(llvm::make_range(Attrs.begin(), WarningBegin), |
6690 | IsSuccessful); |
6691 | if (ErrAttr != WarningBegin) { |
6692 | const DiagnoseIfAttr *DIA = *ErrAttr; |
6693 | S.Diag(Loc, diag::err_diagnose_if_succeeded) << DIA->getMessage(); |
6694 | S.Diag(DIA->getLocation(), diag::note_from_diagnose_if) |
6695 | << DIA->getParent() << DIA->getCond()->getSourceRange(); |
6696 | return true; |
6697 | } |
6698 | |
6699 | for (const auto *DIA : llvm::make_range(WarningBegin, Attrs.end())) |
6700 | if (IsSuccessful(DIA)) { |
6701 | S.Diag(Loc, diag::warn_diagnose_if_succeeded) << DIA->getMessage(); |
6702 | S.Diag(DIA->getLocation(), diag::note_from_diagnose_if) |
6703 | << DIA->getParent() << DIA->getCond()->getSourceRange(); |
6704 | } |
6705 | |
6706 | return false; |
6707 | } |
6708 | |
6709 | bool Sema::diagnoseArgDependentDiagnoseIfAttrs(const FunctionDecl *Function, |
6710 | const Expr *ThisArg, |
6711 | ArrayRef<const Expr *> Args, |
6712 | SourceLocation Loc) { |
6713 | return diagnoseDiagnoseIfAttrsWith( |
6714 | *this, Function, true, Loc, |
6715 | [&](const DiagnoseIfAttr *DIA) { |
6716 | APValue Result; |
6717 | |
6718 | |
6719 | |
6720 | if (!DIA->getCond()->EvaluateWithSubstitution( |
6721 | Result, Context, cast<FunctionDecl>(DIA->getParent()), Args, ThisArg)) |
6722 | return false; |
6723 | return Result.isInt() && Result.getInt().getBoolValue(); |
6724 | }); |
6725 | } |
6726 | |
6727 | bool Sema::diagnoseArgIndependentDiagnoseIfAttrs(const NamedDecl *ND, |
6728 | SourceLocation Loc) { |
6729 | return diagnoseDiagnoseIfAttrsWith( |
6730 | *this, ND, false, Loc, |
6731 | [&](const DiagnoseIfAttr *DIA) { |
6732 | bool Result; |
6733 | return DIA->getCond()->EvaluateAsBooleanCondition(Result, Context) && |
6734 | Result; |
6735 | }); |
6736 | } |
6737 | |
6738 | |
6739 | |
6740 | void Sema::AddFunctionCandidates(const UnresolvedSetImpl &Fns, |
6741 | ArrayRef<Expr *> Args, |
6742 | OverloadCandidateSet &CandidateSet, |
6743 | TemplateArgumentListInfo *ExplicitTemplateArgs, |
6744 | bool SuppressUserConversions, |
6745 | bool PartialOverloading, |
6746 | bool FirstArgumentIsBase) { |
6747 | for (UnresolvedSetIterator F = Fns.begin(), E = Fns.end(); F != E; ++F) { |
6748 | NamedDecl *D = F.getDecl()->getUnderlyingDecl(); |
6749 | ArrayRef<Expr *> FunctionArgs = Args; |
6750 | |
6751 | FunctionTemplateDecl *FunTmpl = dyn_cast<FunctionTemplateDecl>(D); |
6752 | FunctionDecl *FD = |
6753 | FunTmpl ? FunTmpl->getTemplatedDecl() : cast<FunctionDecl>(D); |
6754 | |
6755 | if (isa<CXXMethodDecl>(FD) && !cast<CXXMethodDecl>(FD)->isStatic()) { |
6756 | QualType ObjectType; |
6757 | Expr::Classification ObjectClassification; |
6758 | if (Args.size() > 0) { |
6759 | if (Expr *E = Args[0]) { |
6760 | |
6761 | ObjectType = E->getType(); |
6762 | |
6763 | |
6764 | if (!ObjectType.isNull() && ObjectType->isPointerType()) |
6765 | ObjectClassification = Expr::Classification::makeSimpleLValue(); |
6766 | else |
6767 | ObjectClassification = E->Classify(Context); |
6768 | } |
6769 | FunctionArgs = Args.slice(1); |
6770 | } |
6771 | if (FunTmpl) { |
6772 | AddMethodTemplateCandidate( |
6773 | FunTmpl, F.getPair(), |
6774 | cast<CXXRecordDecl>(FunTmpl->getDeclContext()), |
6775 | ExplicitTemplateArgs, ObjectType, ObjectClassification, |
6776 | FunctionArgs, CandidateSet, SuppressUserConversions, |
6777 | PartialOverloading); |
6778 | } else { |
6779 | AddMethodCandidate(cast<CXXMethodDecl>(FD), F.getPair(), |
6780 | cast<CXXMethodDecl>(FD)->getParent(), ObjectType, |
6781 | ObjectClassification, FunctionArgs, CandidateSet, |
6782 | SuppressUserConversions, PartialOverloading); |
6783 | } |
6784 | } else { |
6785 | |
6786 | |
6787 | |
6788 | |
6789 | if (Args.size() > 0 && |
6790 | (!Args[0] || (FirstArgumentIsBase && isa<CXXMethodDecl>(FD) && |
6791 | !isa<CXXConstructorDecl>(FD)))) { |
6792 | assert(cast<CXXMethodDecl>(FD)->isStatic()); |
6793 | FunctionArgs = Args.slice(1); |
6794 | } |
6795 | if (FunTmpl) { |
6796 | AddTemplateOverloadCandidate(FunTmpl, F.getPair(), |
6797 | ExplicitTemplateArgs, FunctionArgs, |
6798 | CandidateSet, SuppressUserConversions, |
6799 | PartialOverloading); |
6800 | } else { |
6801 | AddOverloadCandidate(FD, F.getPair(), FunctionArgs, CandidateSet, |
6802 | SuppressUserConversions, PartialOverloading); |
6803 | } |
6804 | } |
6805 | } |
6806 | } |
6807 | |
6808 | |
6809 | |
6810 | void Sema::AddMethodCandidate(DeclAccessPair FoundDecl, QualType ObjectType, |
6811 | Expr::Classification ObjectClassification, |
6812 | ArrayRef<Expr *> Args, |
6813 | OverloadCandidateSet &CandidateSet, |
6814 | bool SuppressUserConversions, |
6815 | OverloadCandidateParamOrder PO) { |
6816 | NamedDecl *Decl = FoundDecl.getDecl(); |
6817 | CXXRecordDecl *ActingContext = cast<CXXRecordDecl>(Decl->getDeclContext()); |
6818 | |
6819 | if (isa<UsingShadowDecl>(Decl)) |
6820 | Decl = cast<UsingShadowDecl>(Decl)->getTargetDecl(); |
6821 | |
6822 | if (FunctionTemplateDecl *TD = dyn_cast<FunctionTemplateDecl>(Decl)) { |
6823 | assert(isa<CXXMethodDecl>(TD->getTemplatedDecl()) && |
6824 | "Expected a member function template"); |
6825 | AddMethodTemplateCandidate(TD, FoundDecl, ActingContext, |
6826 | nullptr, ObjectType, |
6827 | ObjectClassification, Args, CandidateSet, |
6828 | SuppressUserConversions, false, PO); |
6829 | } else { |
6830 | AddMethodCandidate(cast<CXXMethodDecl>(Decl), FoundDecl, ActingContext, |
6831 | ObjectType, ObjectClassification, Args, CandidateSet, |
6832 | SuppressUserConversions, false, None, PO); |
6833 | } |
6834 | } |
6835 | |
6836 | |
6837 | |
6838 | |
6839 | |
6840 | |
6841 | |
6842 | |
6843 | void |
6844 | Sema::AddMethodCandidate(CXXMethodDecl *Method, DeclAccessPair FoundDecl, |
6845 | CXXRecordDecl *ActingContext, QualType ObjectType, |
6846 | Expr::Classification ObjectClassification, |
6847 | ArrayRef<Expr *> Args, |
6848 | OverloadCandidateSet &CandidateSet, |
6849 | bool SuppressUserConversions, |
6850 | bool PartialOverloading, |
6851 | ConversionSequenceList EarlyConversions, |
6852 | OverloadCandidateParamOrder PO) { |
6853 | const FunctionProtoType *Proto |
6854 | = dyn_cast<FunctionProtoType>(Method->getType()->getAs<FunctionType>()); |
6855 | assert(Proto && "Methods without a prototype cannot be overloaded"); |
6856 | assert(!isa<CXXConstructorDecl>(Method) && |
6857 | "Use AddOverloadCandidate for constructors"); |
6858 | |
6859 | if (!CandidateSet.isNewCandidate(Method, PO)) |
6860 | return; |
6861 | |
6862 | |
6863 | |
6864 | |
6865 | if (Method->isDefaulted() && Method->isDeleted() && |
6866 | Method->isMoveAssignmentOperator()) |
6867 | return; |
6868 | |
6869 | |
6870 | EnterExpressionEvaluationContext Unevaluated( |
6871 | *this, Sema::ExpressionEvaluationContext::Unevaluated); |
6872 | |
6873 | |
6874 | OverloadCandidate &Candidate = |
6875 | CandidateSet.addCandidate(Args.size() + 1, EarlyConversions); |
6876 | Candidate.FoundDecl = FoundDecl; |
6877 | Candidate.Function = Method; |
6878 | Candidate.RewriteKind = |
6879 | CandidateSet.getRewriteInfo().getRewriteKind(Method, PO); |
6880 | Candidate.IsSurrogate = false; |
6881 | Candidate.IgnoreObjectArgument = false; |
6882 | Candidate.ExplicitCallArguments = Args.size(); |
6883 | |
6884 | unsigned NumParams = Proto->getNumParams(); |
6885 | |
6886 | |
6887 | |
6888 | |
6889 | if (TooManyArguments(NumParams, Args.size(), PartialOverloading) && |
6890 | !Proto->isVariadic()) { |
6891 | Candidate.Viable = false; |
6892 | Candidate.FailureKind = ovl_fail_too_many_arguments; |
6893 | return; |
6894 | } |
6895 | |
6896 | |
6897 | |
6898 | |
6899 | |
6900 | |
6901 | unsigned MinRequiredArgs = Method->getMinRequiredArguments(); |
6902 | if (Args.size() < MinRequiredArgs && !PartialOverloading) { |
6903 | |
6904 | Candidate.Viable = false; |
6905 | Candidate.FailureKind = ovl_fail_too_few_arguments; |
6906 | return; |
6907 | } |
6908 | |
6909 | Candidate.Viable = true; |
6910 | |
6911 | if (Method->isStatic() || ObjectType.isNull()) |
6912 | |
6913 | Candidate.IgnoreObjectArgument = true; |
6914 | else { |
6915 | unsigned ConvIdx = PO == OverloadCandidateParamOrder::Reversed ? 1 : 0; |
6916 | |
6917 | |
6918 | Candidate.Conversions[ConvIdx] = TryObjectArgumentInitialization( |
6919 | *this, CandidateSet.getLocation(), ObjectType, ObjectClassification, |
6920 | Method, ActingContext); |
6921 | if (Candidate.Conversions[ConvIdx].isBad()) { |
6922 | Candidate.Viable = false; |
6923 | Candidate.FailureKind = ovl_fail_bad_conversion; |
6924 | return; |
6925 | } |
6926 | } |
6927 | |
6928 | |
6929 | if (getLangOpts().CUDA) |
6930 | if (const FunctionDecl *Caller = dyn_cast<FunctionDecl>(CurContext)) |
6931 | if (!IsAllowedCUDACall(Caller, Method)) { |
6932 | Candidate.Viable = false; |
6933 | Candidate.FailureKind = ovl_fail_bad_target; |
6934 | return; |
6935 | } |
6936 | |
6937 | if (Method->getTrailingRequiresClause()) { |
6938 | ConstraintSatisfaction Satisfaction; |
6939 | if (CheckFunctionConstraints(Method, Satisfaction) || |
6940 | !Satisfaction.IsSatisfied) { |
6941 | Candidate.Viable = false; |
6942 | Candidate.FailureKind = ovl_fail_constraints_not_satisfied; |
6943 | return; |
6944 | } |
6945 | } |
6946 | |
6947 | |
6948 | |
6949 | for (unsigned ArgIdx = 0; ArgIdx < Args.size(); ++ArgIdx) { |
6950 | unsigned ConvIdx = |
6951 | PO == OverloadCandidateParamOrder::Reversed ? 0 : (ArgIdx + 1); |
6952 | if (Candidate.Conversions[ConvIdx].isInitialized()) { |
6953 | |
6954 | |
6955 | } else if (ArgIdx < NumParams) { |
6956 | |
6957 | |
6958 | |
6959 | |
6960 | QualType ParamType = Proto->getParamType(ArgIdx); |
6961 | Candidate.Conversions[ConvIdx] |
6962 | = TryCopyInitialization(*this, Args[ArgIdx], ParamType, |
6963 | SuppressUserConversions, |
6964 | true, |
6965 | |
6966 | getLangOpts().ObjCAutoRefCount); |
6967 | if (Candidate.Conversions[ConvIdx].isBad()) { |
6968 | Candidate.Viable = false; |
6969 | Candidate.FailureKind = ovl_fail_bad_conversion; |
6970 | return; |
6971 | } |
6972 | } else { |
6973 | |
6974 | |
6975 | |
6976 | Candidate.Conversions[ConvIdx].setEllipsis(); |
6977 | } |
6978 | } |
6979 | |
6980 | if (EnableIfAttr *FailedAttr = |
6981 | CheckEnableIf(Method, CandidateSet.getLocation(), Args, true)) { |
6982 | Candidate.Viable = false; |
6983 | Candidate.FailureKind = ovl_fail_enable_if; |
6984 | Candidate.DeductionFailure.Data = FailedAttr; |
6985 | return; |
6986 | } |
6987 | |
6988 | if (Method->isMultiVersion() && Method->hasAttr<TargetAttr>() && |
6989 | !Method->getAttr<TargetAttr>()->isDefaultVersion()) { |
6990 | Candidate.Viable = false; |
6991 | Candidate.FailureKind = ovl_non_default_multiversion_function; |
6992 | } |
6993 | } |
6994 | |
6995 | |
6996 | |
6997 | |
6998 | void Sema::AddMethodTemplateCandidate( |
6999 | FunctionTemplateDecl *MethodTmpl, DeclAccessPair FoundDecl, |
7000 | CXXRecordDecl *ActingContext, |
7001 | TemplateArgumentListInfo *ExplicitTemplateArgs, QualType ObjectType, |
7002 | Expr::Classification ObjectClassification, ArrayRef<Expr *> Args, |
7003 | OverloadCandidateSet &CandidateSet, bool SuppressUserConversions, |
7004 | bool PartialOverloading, OverloadCandidateParamOrder PO) { |
7005 | if (!CandidateSet.isNewCandidate(MethodTmpl, PO)) |
7006 | return; |
7007 | |
7008 | |
7009 | |
7010 | |
7011 | |
7012 | |
7013 | |
7014 | |
7015 | |
7016 | |
7017 | TemplateDeductionInfo Info(CandidateSet.getLocation()); |
7018 | FunctionDecl *Specialization = nullptr; |
7019 | ConversionSequenceList Conversions; |
7020 | if (TemplateDeductionResult Result = DeduceTemplateArguments( |
7021 | MethodTmpl, ExplicitTemplateArgs, Args, Specialization, Info, |
7022 | PartialOverloading, [&](ArrayRef<QualType> ParamTypes) { |
7023 | return CheckNonDependentConversions( |
7024 | MethodTmpl, ParamTypes, Args, CandidateSet, Conversions, |
7025 | SuppressUserConversions, ActingContext, ObjectType, |
7026 | ObjectClassification, PO); |
7027 | })) { |
7028 | OverloadCandidate &Candidate = |
7029 | CandidateSet.addCandidate(Conversions.size(), Conversions); |
7030 | Candidate.FoundDecl = FoundDecl; |
7031 | Candidate.Function = MethodTmpl->getTemplatedDecl(); |
7032 | Candidate.Viable = false; |
7033 | Candidate.RewriteKind = |
7034 | CandidateSet.getRewriteInfo().getRewriteKind(Candidate.Function, PO); |
7035 | Candidate.IsSurrogate = false; |
7036 | Candidate.IgnoreObjectArgument = |
7037 | cast<CXXMethodDecl>(Candidate.Function)->isStatic() || |
7038 | ObjectType.isNull(); |
7039 | Candidate.ExplicitCallArguments = Args.size(); |
7040 | if (Result == TDK_NonDependentConversionFailure) |
7041 | Candidate.FailureKind = ovl_fail_bad_conversion; |
7042 | else { |
7043 | Candidate.FailureKind = ovl_fail_bad_deduction; |
7044 | Candidate.DeductionFailure = MakeDeductionFailureInfo(Context, Result, |
7045 | Info); |
7046 | } |
7047 | return; |
7048 | } |
7049 | |
7050 | |
7051 | |
7052 | assert(Specialization && "Missing member function template specialization?"); |
7053 | assert(isa<CXXMethodDecl>(Specialization) && |
7054 | "Specialization is not a member function?"); |
7055 | AddMethodCandidate(cast<CXXMethodDecl>(Specialization), FoundDecl, |
7056 | ActingContext, ObjectType, ObjectClassification, Args, |
7057 | CandidateSet, SuppressUserConversions, PartialOverloading, |
7058 | Conversions, PO); |
7059 | } |
7060 | |
7061 | |
7062 | |
7063 | static bool isNonDependentlyExplicit(FunctionTemplateDecl *FTD) { |
7064 | return ExplicitSpecifier::getFromDecl(FTD->getTemplatedDecl()).isExplicit(); |
7065 | } |
7066 | |
7067 | |
7068 | |
7069 | |
7070 | void Sema::AddTemplateOverloadCandidate( |
7071 | FunctionTemplateDecl *FunctionTemplate, DeclAccessPair FoundDecl, |
7072 | TemplateArgumentListInfo *ExplicitTemplateArgs, ArrayRef<Expr *> Args, |
7073 | OverloadCandidateSet &CandidateSet, bool SuppressUserConversions, |
7074 | bool PartialOverloading, bool AllowExplicit, ADLCallKind IsADLCandidate, |
7075 | OverloadCandidateParamOrder PO) { |
7076 | if (!CandidateSet.isNewCandidate(FunctionTemplate, PO)) |
7077 | return; |
7078 | |
7079 | |
7080 | |
7081 | |
7082 | if (!AllowExplicit && isNonDependentlyExplicit(FunctionTemplate)) { |
7083 | OverloadCandidate &Candidate = CandidateSet.addCandidate(); |
7084 | Candidate.FoundDecl = FoundDecl; |
7085 | Candidate.Function = FunctionTemplate->getTemplatedDecl(); |
7086 | Candidate.Viable = false; |
7087 | Candidate.FailureKind = ovl_fail_explicit; |
7088 | return; |
7089 | } |
7090 | |
7091 | |
7092 | |
7093 | |
7094 | |
7095 | |
7096 | |
7097 | |
7098 | |
7099 | |
7100 | TemplateDeductionInfo Info(CandidateSet.getLocation()); |
7101 | FunctionDecl *Specialization = nullptr; |
7102 | ConversionSequenceList Conversions; |
7103 | if (TemplateDeductionResult Result = DeduceTemplateArguments( |
7104 | FunctionTemplate, ExplicitTemplateArgs, Args, Specialization, Info, |
7105 | PartialOverloading, [&](ArrayRef<QualType> ParamTypes) { |
7106 | return CheckNonDependentConversions( |
7107 | FunctionTemplate, ParamTypes, Args, CandidateSet, Conversions, |
7108 | SuppressUserConversions, nullptr, QualType(), {}, PO); |
7109 | })) { |
7110 | OverloadCandidate &Candidate = |
7111 | CandidateSet.addCandidate(Conversions.size(), Conversions); |
7112 | Candidate.FoundDecl = FoundDecl; |
7113 | Candidate.Function = FunctionTemplate->getTemplatedDecl(); |
7114 | Candidate.Viable = false; |
7115 | Candidate.RewriteKind = |
7116 | CandidateSet.getRewriteInfo().getRewriteKind(Candidate.Function, PO); |
7117 | Candidate.IsSurrogate = false; |
7118 | Candidate.IsADLCandidate = IsADLCandidate; |
7119 | |
7120 | |
7121 | Candidate.IgnoreObjectArgument = |
7122 | isa<CXXMethodDecl>(Candidate.Function) && |
7123 | !isa<CXXConstructorDecl>(Candidate.Function); |
7124 | Candidate.ExplicitCallArguments = Args.size(); |
7125 | if (Result == TDK_NonDependentConversionFailure) |
7126 | Candidate.FailureKind = ovl_fail_bad_conversion; |
7127 | else { |
7128 | Candidate.FailureKind = ovl_fail_bad_deduction; |
7129 | Candidate.DeductionFailure = MakeDeductionFailureInfo(Context, Result, |
7130 | Info); |
7131 | } |
7132 | return; |
7133 | } |
7134 | |
7135 | |
7136 | |
7137 | assert(Specialization && "Missing function template specialization?"); |
7138 | AddOverloadCandidate( |
7139 | Specialization, FoundDecl, Args, CandidateSet, SuppressUserConversions, |
7140 | PartialOverloading, AllowExplicit, |
7141 | false, IsADLCandidate, Conversions, PO); |
7142 | } |
7143 | |
7144 | |
7145 | |
7146 | |
7147 | bool Sema::CheckNonDependentConversions( |
7148 | FunctionTemplateDecl *FunctionTemplate, ArrayRef<QualType> ParamTypes, |
7149 | ArrayRef<Expr *> Args, OverloadCandidateSet &CandidateSet, |
7150 | ConversionSequenceList &Conversions, bool SuppressUserConversions, |
7151 | CXXRecordDecl *ActingContext, QualType ObjectType, |
7152 | Expr::Classification ObjectClassification, OverloadCandidateParamOrder PO) { |
7153 | |
7154 | |
7155 | |
7156 | const bool AllowExplicit = false; |
7157 | |
7158 | auto *FD = FunctionTemplate->getTemplatedDecl(); |
7159 | auto *Method = dyn_cast<CXXMethodDecl>(FD); |
7160 | bool HasThisConversion = Method && !isa<CXXConstructorDecl>(Method); |
7161 | unsigned ThisConversions = HasThisConversion ? 1 : 0; |
7162 | |
7163 | Conversions = |
7164 | CandidateSet.allocateConversionSequences(ThisConversions + Args.size()); |
7165 | |
7166 | |
7167 | EnterExpressionEvaluationContext Unevaluated( |
7168 | *this, Sema::ExpressionEvaluationContext::Unevaluated); |
7169 | |
7170 | |
7171 | |
7172 | |
7173 | if (HasThisConversion && !cast<CXXMethodDecl>(FD)->isStatic() && |
7174 | !ObjectType.isNull()) { |
7175 | unsigned ConvIdx = PO == OverloadCandidateParamOrder::Reversed ? 1 : 0; |
7176 | Conversions[ConvIdx] = TryObjectArgumentInitialization( |
7177 | *this, CandidateSet.getLocation(), ObjectType, ObjectClassification, |
7178 | Method, ActingContext); |
7179 | if (Conversions[ConvIdx].isBad()) |
7180 | return true; |
7181 | } |
7182 | |
7183 | for (unsigned I = 0, N = std::min(ParamTypes.size(), Args.size()); I != N; |
7184 | ++I) { |
7185 | QualType ParamType = ParamTypes[I]; |
7186 | if (!ParamType->isDependentType()) { |
7187 | unsigned ConvIdx = PO == OverloadCandidateParamOrder::Reversed |
7188 | ? 0 |
7189 | : (ThisConversions + I); |
7190 | Conversions[ConvIdx] |
7191 | = TryCopyInitialization(*this, Args[I], ParamType, |
7192 | SuppressUserConversions, |
7193 | true, |
7194 | |
7195 | getLangOpts().ObjCAutoRefCount, |
7196 | AllowExplicit); |
7197 | if (Conversions[ConvIdx].isBad()) |
7198 | return true; |
7199 | } |
7200 | } |
7201 | |
7202 | return false; |
7203 | } |
7204 | |
7205 | |
7206 | |
7207 | |
7208 | |
7209 | |
7210 | |
7211 | |
7212 | |
7213 | |
7214 | |
7215 | |
7216 | |
7217 | static bool isAllowableExplicitConversion(Sema &S, |
7218 | QualType ConvType, QualType ToType, |
7219 | bool AllowObjCPointerConversion) { |
7220 | QualType ToNonRefType = ToType.getNonReferenceType(); |
7221 | |
7222 | |
7223 | if (S.Context.hasSameUnqualifiedType(ConvType, ToNonRefType)) |
7224 | return true; |
7225 | |
7226 | |
7227 | bool ObjCLifetimeConversion; |
7228 | if (S.IsQualificationConversion(ConvType, ToNonRefType, false, |
7229 | ObjCLifetimeConversion)) |
7230 | return true; |
7231 | |
7232 | |
7233 | |
7234 | if (!AllowObjCPointerConversion) |
7235 | return false; |
7236 | |
7237 | |
7238 | bool IncompatibleObjC = false; |
7239 | QualType ConvertedType; |
7240 | return S.isObjCPointerConversion(ConvType, ToNonRefType, ConvertedType, |
7241 | IncompatibleObjC); |
7242 | } |
7243 | |
7244 | |
7245 | |
7246 | |
7247 | |
7248 | |
7249 | |
7250 | void Sema::AddConversionCandidate( |
7251 | CXXConversionDecl *Conversion, DeclAccessPair FoundDecl, |
7252 | CXXRecordDecl *ActingContext, Expr *From, QualType ToType, |
7253 | OverloadCandidateSet &CandidateSet, bool AllowObjCConversionOnExplicit, |
7254 | bool AllowExplicit, bool AllowResultConversion) { |
7255 | assert(!Conversion->getDescribedFunctionTemplate() && |
7256 | "Conversion function templates use AddTemplateConversionCandidate"); |
7257 | QualType ConvType = Conversion->getConversionType().getNonReferenceType(); |
7258 | if (!CandidateSet.isNewCandidate(Conversion)) |
7259 | return; |
7260 | |
7261 | |
7262 | |
7263 | if (getLangOpts().CPlusPlus14 && ConvType->isUndeducedType()) { |
7264 | if (DeduceReturnType(Conversion, From->getExprLoc())) |
7265 | return; |
7266 | ConvType = Conversion->getConversionType().getNonReferenceType(); |
7267 | } |
7268 | |
7269 | |
7270 | |
7271 | if (!AllowResultConversion && |
7272 | !Context.hasSameUnqualifiedType(Conversion->getConversionType(), ToType)) |
7273 | return; |
7274 | |
7275 | |
7276 | |
7277 | |
7278 | |
7279 | |
7280 | |
7281 | if (Conversion->isExplicit() && |
7282 | !isAllowableExplicitConversion(*this, ConvType, ToType, |
7283 | AllowObjCConversionOnExplicit)) |
7284 | return; |
7285 | |
7286 | |
7287 | EnterExpressionEvaluationContext Unevaluated( |
7288 | *this, Sema::ExpressionEvaluationContext::Unevaluated); |
7289 | |
7290 | |
7291 | OverloadCandidate &Candidate = CandidateSet.addCandidate(1); |
7292 | Candidate.FoundDecl = FoundDecl; |
7293 | Candidate.Function = Conversion; |
7294 | Candidate.IsSurrogate = false; |
7295 | Candidate.IgnoreObjectArgument = false; |
7296 | Candidate.FinalConversion.setAsIdentityConversion(); |
7297 | Candidate.FinalConversion.setFromType(ConvType); |
7298 | Candidate.FinalConversion.setAllToTypes(ToType); |
7299 | Candidate.Viable = true; |
7300 | Candidate.ExplicitCallArguments = 1; |
7301 | |
7302 | |
7303 | |
7304 | |
7305 | if (!AllowExplicit && Conversion->isExplicit()) { |
7306 | Candidate.Viable = false; |
7307 | Candidate.FailureKind = ovl_fail_explicit; |
7308 | return; |
7309 | } |
7310 | |
7311 | |
7312 | |
7313 | |
7314 | |
7315 | |
7316 | |
7317 | |
7318 | QualType ImplicitParamType = From->getType(); |
7319 | if (const PointerType *FromPtrType = ImplicitParamType->getAs<PointerType>()) |
7320 | ImplicitParamType = FromPtrType->getPointeeType(); |
7321 | CXXRecordDecl *ConversionContext |
7322 | = cast<CXXRecordDecl>(ImplicitParamType->castAs<RecordType>()->getDecl()); |
7323 | |
7324 | Candidate.Conversions[0] = TryObjectArgumentInitialization( |
7325 | *this, CandidateSet.getLocation(), From->getType(), |
7326 | From->Classify(Context), Conversion, ConversionContext); |
7327 | |
7328 | if (Candidate.Conversions[0].isBad()) { |
7329 | Candidate.Viable = false; |
7330 | Candidate.FailureKind = ovl_fail_bad_conversion; |
7331 | return; |
7332 | } |
7333 | |
7334 | if (Conversion->getTrailingRequiresClause()) { |
7335 | ConstraintSatisfaction Satisfaction; |
7336 | if (CheckFunctionConstraints(Conversion, Satisfaction) || |
7337 | !Satisfaction.IsSatisfied) { |
7338 | Candidate.Viable = false; |
7339 | Candidate.FailureKind = ovl_fail_constraints_not_satisfied; |
7340 | return; |
7341 | } |
7342 | } |
7343 | |
7344 | |
7345 | |
7346 | |
7347 | QualType FromCanon |
7348 | = Context.getCanonicalType(From->getType().getUnqualifiedType()); |
7349 | QualType ToCanon = Context.getCanonicalType(ToType).getUnqualifiedType(); |
7350 | if (FromCanon == ToCanon || |
7351 | IsDerivedFrom(CandidateSet.getLocation(), FromCanon, ToCanon)) { |
7352 | Candidate.Viable = false; |
7353 | Candidate.FailureKind = ovl_fail_trivial_conversion; |
7354 | return; |
7355 | } |
7356 | |
7357 | |
7358 | |
7359 | |
7360 | |
7361 | |
7362 | |
7363 | |
7364 | |
7365 | DeclRefExpr ConversionRef(Context, Conversion, false, Conversion->getType(), |
7366 | VK_LValue, From->getBeginLoc()); |
7367 | ImplicitCastExpr ConversionFn(ImplicitCastExpr::OnStack, |
7368 | Context.getPointerType(Conversion->getType()), |
7369 | CK_FunctionToPointerDecay, &ConversionRef, |
7370 | VK_PRValue, FPOptionsOverride()); |
7371 | |
7372 | QualType ConversionType = Conversion->getConversionType(); |
7373 | if (!isCompleteType(From->getBeginLoc(), ConversionType)) { |
7374 | Candidate.Viable = false; |
7375 | Candidate.FailureKind = ovl_fail_bad_final_conversion; |
7376 | return; |
7377 | } |
7378 | |
7379 | ExprValueKind VK = Expr::getValueKindForType(ConversionType); |
7380 | |
7381 | |
7382 | |
7383 | |
7384 | QualType CallResultType = ConversionType.getNonLValueExprType(Context); |
7385 | |
7386 | alignas(CallExpr) char Buffer[sizeof(CallExpr) + sizeof(Stmt *)]; |
7387 | CallExpr *TheTemporaryCall = CallExpr::CreateTemporary( |
7388 | Buffer, &ConversionFn, CallResultType, VK, From->getBeginLoc()); |
7389 | |
7390 | ImplicitConversionSequence ICS = |
7391 | TryCopyInitialization(*this, TheTemporaryCall, ToType, |
7392 | true, |
7393 | false, |
7394 | false); |
7395 | |
7396 | switch (ICS.getKind()) { |
7397 | case ImplicitConversionSequence::StandardConversion: |
7398 | Candidate.FinalConversion = ICS.Standard; |
7399 | |
7400 | |
7401 | |
7402 | |
7403 | |
7404 | if (Conversion->getPrimaryTemplate() && |
7405 | GetConversionRank(ICS.Standard.Second) != ICR_Exact_Match) { |
7406 | Candidate.Viable = false; |
7407 | Candidate.FailureKind = ovl_fail_final_conversion_not_exact; |
7408 | return; |
7409 | } |
7410 | |
7411 | |
7412 | |
7413 | |
7414 | |
7415 | |
7416 | if (ToType->isRValueReferenceType() && |
7417 | ICS.Standard.First == ICK_Lvalue_To_Rvalue) { |
7418 | Candidate.Viable = false; |
7419 | Candidate.FailureKind = ovl_fail_bad_final_conversion; |
7420 | return; |
7421 | } |
7422 | break; |
7423 | |
7424 | case ImplicitConversionSequence::BadConversion: |
7425 | Candidate.Viable = false; |
7426 | Candidate.FailureKind = ovl_fail_bad_final_conversion; |
7427 | return; |
7428 | |
7429 | default: |
7430 | llvm_unreachable( |
7431 | "Can only end up with a standard conversion sequence or failure"); |
7432 | } |
7433 | |
7434 | if (EnableIfAttr *FailedAttr = |
7435 | CheckEnableIf(Conversion, CandidateSet.getLocation(), None)) { |
7436 | Candidate.Viable = false; |
7437 | Candidate.FailureKind = ovl_fail_enable_if; |
7438 | Candidate.DeductionFailure.Data = FailedAttr; |
7439 | return; |
7440 | } |
7441 | |
7442 | if (Conversion->isMultiVersion() && Conversion->hasAttr<TargetAttr>() && |
7443 | !Conversion->getAttr<TargetAttr>()->isDefaultVersion()) { |
7444 | Candidate.Viable = false; |
7445 | Candidate.FailureKind = ovl_non_default_multiversion_function; |
7446 | } |
7447 | } |
7448 | |
7449 | |
7450 | |
7451 | |
7452 | |
7453 | |
7454 | void Sema::AddTemplateConversionCandidate( |
7455 | FunctionTemplateDecl *FunctionTemplate, DeclAccessPair FoundDecl, |
7456 | CXXRecordDecl *ActingDC, Expr *From, QualType ToType, |
7457 | OverloadCandidateSet &CandidateSet, bool AllowObjCConversionOnExplicit, |
7458 | bool AllowExplicit, bool AllowResultConversion) { |
7459 | assert(isa<CXXConversionDecl>(FunctionTemplate->getTemplatedDecl()) && |
7460 | "Only conversion function templates permitted here"); |
7461 | |
7462 | if (!CandidateSet.isNewCandidate(FunctionTemplate)) |
7463 | return; |
7464 | |
7465 | |
7466 | |
7467 | |
7468 | if (!AllowExplicit && isNonDependentlyExplicit(FunctionTemplate)) { |
7469 | OverloadCandidate &Candidate = CandidateSet.addCandidate(); |
7470 | Candidate.FoundDecl = FoundDecl; |
7471 | Candidate.Function = FunctionTemplate->getTemplatedDecl(); |
7472 | Candidate.Viable = false; |
7473 | Candidate.FailureKind = ovl_fail_explicit; |
7474 | return; |
7475 | } |
7476 | |
7477 | TemplateDeductionInfo Info(CandidateSet.getLocation()); |
7478 | CXXConversionDecl *Specialization = nullptr; |
7479 | if (TemplateDeductionResult Result |
7480 | = DeduceTemplateArguments(FunctionTemplate, ToType, |
7481 | Specialization, Info)) { |
7482 | OverloadCandidate &Candidate = CandidateSet.addCandidate(); |
7483 | Candidate.FoundDecl = FoundDecl; |
7484 | Candidate.Function = FunctionTemplate->getTemplatedDecl(); |
7485 | Candidate.Viable = false; |
7486 | Candidate.FailureKind = ovl_fail_bad_deduction; |
7487 | Candidate.IsSurrogate = false; |
7488 | Candidate.IgnoreObjectArgument = false; |
7489 | Candidate.ExplicitCallArguments = 1; |
7490 | Candidate.DeductionFailure = MakeDeductionFailureInfo(Context, Result, |
7491 | Info); |
7492 | return; |
7493 | } |
7494 | |
7495 | |
7496 | |
7497 | assert(Specialization && "Missing function template specialization?"); |
7498 | AddConversionCandidate(Specialization, FoundDecl, ActingDC, From, ToType, |
7499 | CandidateSet, AllowObjCConversionOnExplicit, |
7500 | AllowExplicit, AllowResultConversion); |
7501 | } |
7502 | |
7503 | |
7504 | |
7505 | |
7506 | |
7507 | |
7508 | void Sema::AddSurrogateCandidate(CXXConversionDecl *Conversion, |
7509 | DeclAccessPair FoundDecl, |
7510 | CXXRecordDecl *ActingContext, |
7511 | const FunctionProtoType *Proto, |
7512 | Expr *Object, |
7513 | ArrayRef<Expr *> Args, |
7514 | OverloadCandidateSet& CandidateSet) { |
7515 | if (!CandidateSet.isNewCandidate(Conversion)) |
7516 | return; |
7517 | |
7518 | |
7519 | EnterExpressionEvaluationContext Unevaluated( |
7520 | *this, Sema::ExpressionEvaluationContext::Unevaluated); |
7521 | |
7522 | OverloadCandidate &Candidate = CandidateSet.addCandidate(Args.size() + 1); |
7523 | Candidate.FoundDecl = FoundDecl; |
7524 | Candidate.Function = nullptr; |
7525 | Candidate.Surrogate = Conversion; |
7526 | Candidate.Viable = true; |
7527 | Candidate.IsSurrogate = true; |
7528 | Candidate.IgnoreObjectArgument = false; |
7529 | Candidate.ExplicitCallArguments = Args.size(); |
7530 | |
7531 | |
7532 | |
7533 | ImplicitConversionSequence ObjectInit = TryObjectArgumentInitialization( |
7534 | *this, CandidateSet.getLocation(), Object->getType(), |
7535 | Object->Classify(Context), Conversion, ActingContext); |
7536 | if (ObjectInit.isBad()) { |
7537 | Candidate.Viable = false; |
7538 | Candidate.FailureKind = ovl_fail_bad_conversion; |
7539 | Candidate.Conversions[0] = ObjectInit; |
7540 | return; |
7541 | } |
7542 | |
7543 | |
7544 | |
7545 | |
7546 | Candidate.Conversions[0].setUserDefined(); |
7547 | Candidate.Conversions[0].UserDefined.Before = ObjectInit.Standard; |
7548 | Candidate.Conversions[0].UserDefined.EllipsisConversion = false; |
7549 | Candidate.Conversions[0].UserDefined.HadMultipleCandidates = false; |
7550 | Candidate.Conversions[0].UserDefined.ConversionFunction = Conversion; |
7551 | Candidate.Conversions[0].UserDefined.FoundConversionFunction = FoundDecl; |
7552 | Candidate.Conversions[0].UserDefined.After |
7553 | = Candidate.Conversions[0].UserDefined.Before; |
7554 | Candidate.Conversions[0].UserDefined.After.setAsIdentityConversion(); |
7555 | |
7556 | |
7557 | unsigned NumParams = Proto->getNumParams(); |
7558 | |
7559 | |
7560 | |
7561 | |
7562 | if (Args.size() > NumParams && !Proto->isVariadic()) { |
7563 | Candidate.Viable = false; |
7564 | Candidate.FailureKind = ovl_fail_too_many_arguments; |
7565 | return; |
7566 | } |
7567 | |
7568 | |
7569 | |
7570 | if (Args.size() < NumParams) { |
7571 | |
7572 | Candidate.Viable = false; |
7573 | Candidate.FailureKind = ovl_fail_too_few_arguments; |
7574 | return; |
7575 | } |
7576 | |
7577 | |
7578 | |
7579 | for (unsigned ArgIdx = 0, N = Args.size(); ArgIdx != N; ++ArgIdx) { |
7580 | if (ArgIdx < NumParams) { |
7581 | |
7582 | |
7583 | |
7584 | |
7585 | QualType ParamType = Proto->getParamType(ArgIdx); |
7586 | Candidate.Conversions[ArgIdx + 1] |
7587 | = TryCopyInitialization(*this, Args[ArgIdx], ParamType, |
7588 | false, |
7589 | false, |
7590 | |
7591 | getLangOpts().ObjCAutoRefCount); |
7592 | if (Candidate.Conversions[ArgIdx + 1].isBad()) { |
7593 | Candidate.Viable = false; |
7594 | Candidate.FailureKind = ovl_fail_bad_conversion; |
7595 | return; |
7596 | } |
7597 | } else { |
7598 | |
7599 | |
7600 | |
7601 | Candidate.Conversions[ArgIdx + 1].setEllipsis(); |
7602 | } |
7603 | } |
7604 | |
7605 | if (EnableIfAttr *FailedAttr = |
7606 | CheckEnableIf(Conversion, CandidateSet.getLocation(), None)) { |
7607 | Candidate.Viable = false; |
7608 | Candidate.FailureKind = ovl_fail_enable_if; |
7609 | Candidate.DeductionFailure.Data = FailedAttr; |
7610 | return; |
7611 | } |
7612 | } |
7613 | |
7614 | |
7615 | |
7616 | void Sema::AddNonMemberOperatorCandidates( |
7617 | const UnresolvedSetImpl &Fns, ArrayRef<Expr *> Args, |
7618 | OverloadCandidateSet &CandidateSet, |
7619 | TemplateArgumentListInfo *ExplicitTemplateArgs) { |
7620 | for (UnresolvedSetIterator F = Fns.begin(), E = Fns.end(); F != E; ++F) { |
7621 | NamedDecl *D = F.getDecl()->getUnderlyingDecl(); |
7622 | ArrayRef<Expr *> FunctionArgs = Args; |
7623 | |
7624 | FunctionTemplateDecl *FunTmpl = dyn_cast<FunctionTemplateDecl>(D); |
7625 | FunctionDecl *FD = |
7626 | FunTmpl ? FunTmpl->getTemplatedDecl() : cast<FunctionDecl>(D); |
7627 | |
7628 | |
7629 | if (!CandidateSet.getRewriteInfo().isAcceptableCandidate(FD)) |
7630 | continue; |
7631 | |
7632 | assert(!isa<CXXMethodDecl>(FD) && |
7633 | "unqualified operator lookup found a member function"); |
7634 | |
7635 | if (FunTmpl) { |
7636 | AddTemplateOverloadCandidate(FunTmpl, F.getPair(), ExplicitTemplateArgs, |
7637 | FunctionArgs, CandidateSet); |
7638 | if (CandidateSet.getRewriteInfo().shouldAddReversed(Context, FD)) |
7639 | AddTemplateOverloadCandidate( |
7640 | FunTmpl, F.getPair(), ExplicitTemplateArgs, |
7641 | {FunctionArgs[1], FunctionArgs[0]}, CandidateSet, false, false, |
7642 | true, ADLCallKind::NotADL, OverloadCandidateParamOrder::Reversed); |
7643 | } else { |
7644 | if (ExplicitTemplateArgs) |
7645 | continue; |
7646 | AddOverloadCandidate(FD, F.getPair(), FunctionArgs, CandidateSet); |
7647 | if (CandidateSet.getRewriteInfo().shouldAddReversed(Context, FD)) |
7648 | AddOverloadCandidate(FD, F.getPair(), |
7649 | {FunctionArgs[1], FunctionArgs[0]}, CandidateSet, |
7650 | false, false, true, false, ADLCallKind::NotADL, |
7651 | None, OverloadCandidateParamOrder::Reversed); |
7652 | } |
7653 | } |
7654 | } |
7655 | |
7656 | |
7657 | |
7658 | |
7659 | |
7660 | |
7661 | |
7662 | |
7663 | |
7664 | void Sema::AddMemberOperatorCandidates(OverloadedOperatorKind Op, |
7665 | SourceLocation OpLoc, |
7666 | ArrayRef<Expr *> Args, |
7667 | OverloadCandidateSet &CandidateSet, |
7668 | OverloadCandidateParamOrder PO) { |
7669 | DeclarationName OpName = Context.DeclarationNames.getCXXOperatorName(Op); |
7670 | |
7671 | |
7672 | |
7673 | |
7674 | |
7675 | |
7676 | |
7677 | |
7678 | |
7679 | QualType T1 = Args[0]->getType(); |
7680 | |
7681 | |
7682 | |
7683 | |
7684 | |
7685 | if (const RecordType *T1Rec = T1->getAs<RecordType>()) { |
7686 | |
7687 | if (!isCompleteType(OpLoc, T1) && !T1Rec->isBeingDefined()) |
7688 | return; |
7689 | |
7690 | if (!T1Rec->getDecl()->getDefinition()) |
7691 | return; |
7692 | |
7693 | LookupResult Operators(*this, OpName, OpLoc, LookupOrdinaryName); |
7694 | LookupQualifiedName(Operators, T1Rec->getDecl()); |
7695 | Operators.suppressDiagnostics(); |
7696 | |
7697 | for (LookupResult::iterator Oper = Operators.begin(), |
7698 | OperEnd = Operators.end(); |
7699 | Oper != OperEnd; |
7700 | ++Oper) |
7701 | AddMethodCandidate(Oper.getPair(), Args[0]->getType(), |
7702 | Args[0]->Classify(Context), Args.slice(1), |
7703 | CandidateSet, false, PO); |
7704 | } |
7705 | } |
7706 | |
7707 | |
7708 | |
7709 | |
7710 | |
7711 | |
7712 | |
7713 | |
7714 | |
7715 | void Sema::AddBuiltinCandidate(QualType *ParamTys, ArrayRef<Expr *> Args, |
7716 | OverloadCandidateSet& CandidateSet, |
7717 | bool IsAssignmentOperator, |
7718 | unsigned NumContextualBoolArguments) { |
7719 | |
7720 | EnterExpressionEvaluationContext Unevaluated( |
7721 | *this, Sema::ExpressionEvaluationContext::Unevaluated); |
7722 | |
7723 | |
7724 | OverloadCandidate &Candidate = CandidateSet.addCandidate(Args.size()); |
7725 | Candidate.FoundDecl = DeclAccessPair::make(nullptr, AS_none); |
7726 | Candidate.Function = nullptr; |
7727 | Candidate.IsSurrogate = false; |
7728 | Candidate.IgnoreObjectArgument = false; |
7729 | std::copy(ParamTys, ParamTys + Args.size(), Candidate.BuiltinParamTypes); |
7730 | |
7731 | |
7732 | |
7733 | Candidate.Viable = true; |
7734 | Candidate.ExplicitCallArguments = Args.size(); |
7735 | for (unsigned ArgIdx = 0, N = Args.size(); ArgIdx != N; ++ArgIdx) { |
7736 | |
7737 | |
7738 | |
7739 | |
7740 | |
7741 | |
7742 | |
7743 | |
7744 | |
7745 | |
7746 | |
7747 | |
7748 | if (ArgIdx < NumContextualBoolArguments) { |
7749 | assert(ParamTys[ArgIdx] == Context.BoolTy && |
7750 | "Contextual conversion to bool requires bool type"); |
7751 | Candidate.Conversions[ArgIdx] |
7752 | = TryContextuallyConvertToBool(*this, Args[ArgIdx]); |
7753 | } else { |
7754 | Candidate.Conversions[ArgIdx] |
7755 | = TryCopyInitialization(*this, Args[ArgIdx], ParamTys[ArgIdx], |
7756 | ArgIdx == 0 && IsAssignmentOperator, |
7757 | false, |
7758 | |
7759 | getLangOpts().ObjCAutoRefCount); |
7760 | } |
7761 | if (Candidate.Conversions[ArgIdx].isBad()) { |
7762 | Candidate.Viable = false; |
7763 | Candidate.FailureKind = ovl_fail_bad_conversion; |
7764 | break; |
7765 | } |
7766 | } |
7767 | } |
7768 | |
7769 | namespace { |
7770 | |
7771 | |
7772 | |
7773 | |
7774 | |
7775 | class BuiltinCandidateTypeSet { |
7776 | |
7777 | typedef llvm::SetVector<QualType, SmallVector<QualType, 8>, |
7778 | llvm::SmallPtrSet<QualType, 8>> TypeSet; |
7779 | |
7780 | |
7781 | |
7782 | TypeSet PointerTypes; |
7783 | |
7784 | |
7785 | |
7786 | TypeSet MemberPointerTypes; |
7787 | |
7788 | |
7789 | |
7790 | TypeSet EnumerationTypes; |
7791 | |
7792 | |
7793 | |
7794 | TypeSet VectorTypes; |
7795 | |
7796 | |
7797 | |
7798 | TypeSet MatrixTypes; |
7799 | |
7800 | |
7801 | bool HasNonRecordTypes; |
7802 | |
7803 | |
7804 | |
7805 | bool HasArithmeticOrEnumeralTypes; |
7806 | |
7807 | |
7808 | |
7809 | bool HasNullPtrType; |
7810 | |
7811 | |
7812 | |
7813 | Sema &SemaRef; |
7814 | |
7815 | |
7816 | ASTContext &Context; |
7817 | |
7818 | bool AddPointerWithMoreQualifiedTypeVariants(QualType Ty, |
7819 | const Qualifiers &VisibleQuals); |
7820 | bool AddMemberPointerWithMoreQualifiedTypeVariants(QualType Ty); |
7821 | |
7822 | public: |
7823 | |
7824 | typedef TypeSet::iterator iterator; |
7825 | |
7826 | BuiltinCandidateTypeSet(Sema &SemaRef) |
7827 | : HasNonRecordTypes(false), |
7828 | HasArithmeticOrEnumeralTypes(false), |
7829 | HasNullPtrType(false), |
7830 | SemaRef(SemaRef), |
7831 | Context(SemaRef.Context) { } |
7832 | |
7833 | void AddTypesConvertedFrom(QualType Ty, |
7834 | SourceLocation Loc, |
7835 | bool AllowUserConversions, |
7836 | bool AllowExplicitConversions, |
7837 | const Qualifiers &VisibleTypeConversionsQuals); |
7838 | |
7839 | llvm::iterator_range<iterator> pointer_types() { return PointerTypes; } |
7840 | llvm::iterator_range<iterator> member_pointer_types() { |
7841 | return MemberPointerTypes; |
7842 | } |
7843 | llvm::iterator_range<iterator> enumeration_types() { |
7844 | return EnumerationTypes; |
7845 | } |
7846 | llvm::iterator_range<iterator> vector_types() { return VectorTypes; } |
7847 | llvm::iterator_range<iterator> matrix_types() { return MatrixTypes; } |
7848 | |
7849 | bool containsMatrixType(QualType Ty) const { return MatrixTypes.count(Ty); } |
7850 | bool hasNonRecordTypes() { return HasNonRecordTypes; } |
7851 | bool hasArithmeticOrEnumeralTypes() { return HasArithmeticOrEnumeralTypes; } |
7852 | bool hasNullPtrType() const { return HasNullPtrType; } |
7853 | }; |
7854 | |
7855 | } |
7856 | |
7857 | |
7858 | |
7859 | |
7860 | |
7861 | |
7862 | |
7863 | |
7864 | |
7865 | |
7866 | bool |
7867 | BuiltinCandidateTypeSet::AddPointerWithMoreQualifiedTypeVariants(QualType Ty, |
7868 | const Qualifiers &VisibleQuals) { |
7869 | |
7870 | |
7871 | if (!PointerTypes.insert(Ty)) |
7872 | return false; |
7873 | |
7874 | QualType PointeeTy; |
7875 | const PointerType *PointerTy = Ty->getAs<PointerType>(); |
7876 | bool buildObjCPtr = false; |
7877 | if (!PointerTy) { |
7878 | const ObjCObjectPointerType *PTy = Ty->castAs<ObjCObjectPointerType>(); |
7879 | PointeeTy = PTy->getPointeeType(); |
7880 | buildObjCPtr = true; |
7881 | } else { |
7882 | PointeeTy = PointerTy->getPointeeType(); |
7883 | } |
7884 | |
7885 | |
7886 | |
7887 | |
7888 | |
7889 | if (PointeeTy->isArrayType()) |
7890 | return true; |
7891 | |
7892 | unsigned BaseCVR = PointeeTy.getCVRQualifiers(); |
7893 | bool hasVolatile = VisibleQuals.hasVolatile(); |
7894 | bool hasRestrict = VisibleQuals.hasRestrict(); |
7895 | |
7896 | |
7897 | for (unsigned CVR = BaseCVR+1; CVR <= Qualifiers::CVRMask; ++CVR) { |
7898 | if ((CVR | BaseCVR) != CVR) continue; |
7899 | |
7900 | if ((CVR & Qualifiers::Volatile) && !hasVolatile) continue; |
7901 | |
7902 | |
7903 | |
7904 | if ((CVR & Qualifiers::Restrict) && |
7905 | (!hasRestrict || |
7906 | (!(PointeeTy->isAnyPointerType() || PointeeTy->isReferenceType())))) |
7907 | continue; |
7908 | |
7909 | |
7910 | QualType QPointeeTy = Context.getCVRQualifiedType(PointeeTy, CVR); |
7911 | |
7912 | |
7913 | QualType QPointerTy; |
7914 | if (!buildObjCPtr) |
7915 | QPointerTy = Context.getPointerType(QPointeeTy); |
7916 | else |
7917 | QPointerTy = Context.getObjCObjectPointerType(QPointeeTy); |
7918 | |
7919 | |
7920 | PointerTypes.insert(QPointerTy); |
7921 | } |
7922 | |
7923 | return true; |
7924 | } |
7925 | |
7926 | |
7927 | |
7928 | |
7929 | |
7930 | |
7931 | |
7932 | |
7933 | |
7934 | |
7935 | bool |
7936 | BuiltinCandidateTypeSet::AddMemberPointerWithMoreQualifiedTypeVariants( |
7937 | QualType Ty) { |
7938 | |
7939 | if (!MemberPointerTypes.insert(Ty)) |
7940 | return false; |
7941 | |
7942 | const MemberPointerType *PointerTy = Ty->getAs<MemberPointerType>(); |
7943 | assert(PointerTy && "type was not a member pointer type!"); |
7944 | |
7945 | QualType PointeeTy = PointerTy->getPointeeType(); |
7946 | |
7947 | |
7948 | |
7949 | |
7950 | if (PointeeTy->isArrayType()) |
7951 | return true; |
7952 | const Type *ClassTy = PointerTy->getClass(); |
7953 | |
7954 | |
7955 | |
7956 | unsigned BaseCVR = PointeeTy.getCVRQualifiers(); |
7957 | for (unsigned CVR = BaseCVR+1; CVR <= Qualifiers::CVRMask; ++CVR) { |
7958 | if ((CVR | BaseCVR) != CVR) continue; |
7959 | |
7960 | QualType QPointeeTy = Context.getCVRQualifiedType(PointeeTy, CVR); |
7961 | MemberPointerTypes.insert( |
7962 | Context.getMemberPointerType(QPointeeTy, ClassTy)); |
7963 | } |
7964 | |
7965 | return true; |
7966 | } |
7967 | |
7968 | |
7969 | |
7970 | |
7971 | |
7972 | |
7973 | |
7974 | |
7975 | |
7976 | void |
7977 | BuiltinCandidateTypeSet::AddTypesConvertedFrom(QualType Ty, |
7978 | SourceLocation Loc, |
7979 | bool AllowUserConversions, |
7980 | bool AllowExplicitConversions, |
7981 | const Qualifiers &VisibleQuals) { |
7982 | |
7983 | Ty = Context.getCanonicalType(Ty); |
7984 | |
7985 | |
7986 | |
7987 | if (const ReferenceType *RefTy = Ty->getAs<ReferenceType>()) |
7988 | Ty = RefTy->getPointeeType(); |
7989 | |
7990 | |
7991 | if (Ty->isArrayType()) |
7992 | Ty = SemaRef.Context.getArrayDecayedType(Ty); |
7993 | |
7994 | |
7995 | Ty = Ty.getLocalUnqualifiedType(); |
7996 | |
7997 | |
7998 | const RecordType *TyRec = Ty->getAs<RecordType>(); |
7999 | HasNonRecordTypes = HasNonRecordTypes || !TyRec; |
8000 | |
8001 | |
8002 | HasArithmeticOrEnumeralTypes = |
8003 | HasArithmeticOrEnumeralTypes || Ty->isArithmeticType(); |
8004 | |
8005 | if (Ty->isObjCIdType() || Ty->isObjCClassType()) |
8006 | PointerTypes.insert(Ty); |
8007 | else if (Ty->getAs<PointerType>() || Ty->getAs<ObjCObjectPointerType>()) { |
8008 | |
8009 | |
8010 | if (!AddPointerWithMoreQualifiedTypeVariants(Ty, VisibleQuals)) |
8011 | return; |
8012 | } else if (Ty->isMemberPointerType()) { |
8013 | |
8014 | if (!AddMemberPointerWithMoreQualifiedTypeVariants(Ty)) |
8015 | return; |
8016 | } else if (Ty->isEnumeralType()) { |
8017 | HasArithmeticOrEnumeralTypes = true; |
8018 | EnumerationTypes.insert(Ty); |
8019 | } else if (Ty->isVectorType()) { |
8020 | |
8021 | |
8022 | HasArithmeticOrEnumeralTypes = true; |
8023 | VectorTypes.insert(Ty); |
8024 | } else if (Ty->isMatrixType()) { |
8025 | |
8026 | |
8027 | HasArithmeticOrEnumeralTypes = true; |
8028 | MatrixTypes.insert(Ty); |
8029 | } else if (Ty->isNullPtrType()) { |
8030 | HasNullPtrType = true; |
8031 | } else if (AllowUserConversions && TyRec) { |
8032 | |
8033 | if (!SemaRef.isCompleteType(Loc, Ty)) |
8034 | return; |
8035 | |
8036 | CXXRecordDecl *ClassDecl = cast<CXXRecordDecl>(TyRec->getDecl()); |
8037 | for (NamedDecl *D : ClassDecl->getVisibleConversionFunctions()) { |
8038 | if (isa<UsingShadowDecl>(D)) |
8039 | D = cast<UsingShadowDecl>(D)->getTargetDecl(); |
8040 | |
8041 | |
8042 | |
8043 | if (isa<FunctionTemplateDecl>(D)) |
8044 | continue; |
8045 | |
8046 | CXXConversionDecl *Conv = cast<CXXConversionDecl>(D); |
8047 | if (AllowExplicitConversions || !Conv->isExplicit()) { |
8048 | AddTypesConvertedFrom(Conv->getConversionType(), Loc, false, false, |
8049 | VisibleQuals); |
8050 | } |
8051 | } |
8052 | } |
8053 | } |
8054 | |
8055 | |
8056 | static QualType AdjustAddressSpaceForBuiltinOperandType(Sema &S, QualType T, |
8057 | Expr *Arg) { |
8058 | return S.Context.getAddrSpaceQualType(T, Arg->getType().getAddressSpace()); |
8059 | } |
8060 | |
8061 | |
8062 | |
8063 | |
8064 | static void AddBuiltinAssignmentOperatorCandidates(Sema &S, |
8065 | QualType T, |
8066 | ArrayRef<Expr *> Args, |
8067 | OverloadCandidateSet &CandidateSet) { |
8068 | QualType ParamTypes[2]; |
8069 | |
8070 | |
8071 | ParamTypes[0] = S.Context.getLValueReferenceType( |
8072 | AdjustAddressSpaceForBuiltinOperandType(S, T, Args[0])); |
8073 | ParamTypes[1] = T; |
8074 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet, |
8075 | true); |
8076 | |
8077 | if (!S.Context.getCanonicalType(T).isVolatileQualified()) { |
8078 | |
8079 | ParamTypes[0] = S.Context.getLValueReferenceType( |
8080 | AdjustAddressSpaceForBuiltinOperandType(S, S.Context.getVolatileType(T), |
8081 | Args[0])); |
8082 | ParamTypes[1] = T; |
8083 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet, |
8084 | true); |
8085 | } |
8086 | } |
8087 | |
8088 | |
8089 | |
8090 | static Qualifiers CollectVRQualifiers(ASTContext &Context, Expr* ArgExpr) { |
8091 | Qualifiers VRQuals; |
8092 | const RecordType *TyRec; |
8093 | if (const MemberPointerType *RHSMPType = |
8094 | ArgExpr->getType()->getAs<MemberPointerType>()) |
8095 | TyRec = RHSMPType->getClass()->getAs<RecordType>(); |
8096 | else |
8097 | TyRec = ArgExpr->getType()->getAs<RecordType>(); |
8098 | if (!TyRec) { |
8099 | |
8100 | VRQuals.addVolatile(); |
8101 | VRQuals.addRestrict(); |
8102 | return VRQuals; |
8103 | } |
8104 | |
8105 | CXXRecordDecl *ClassDecl = cast<CXXRecordDecl>(TyRec->getDecl()); |
8106 | if (!ClassDecl->hasDefinition()) |
8107 | return VRQuals; |
8108 | |
8109 | for (NamedDecl *D : ClassDecl->getVisibleConversionFunctions()) { |
8110 | if (isa<UsingShadowDecl>(D)) |
8111 | D = cast<UsingShadowDecl>(D)->getTargetDecl(); |
8112 | if (CXXConversionDecl *Conv = dyn_cast<CXXConversionDecl>(D)) { |
8113 | QualType CanTy = Context.getCanonicalType(Conv->getConversionType()); |
8114 | if (const ReferenceType *ResTypeRef = CanTy->getAs<ReferenceType>()) |
8115 | CanTy = ResTypeRef->getPointeeType(); |
8116 | |
8117 | |
8118 | bool done = false; |
8119 | while (!done) { |
8120 | if (CanTy.isRestrictQualified()) |
8121 | VRQuals.addRestrict(); |
8122 | if (const PointerType *ResTypePtr = CanTy->getAs<PointerType>()) |
8123 | CanTy = ResTypePtr->getPointeeType(); |
8124 | else if (const MemberPointerType *ResTypeMPtr = |
8125 | CanTy->getAs<MemberPointerType>()) |
8126 | CanTy = ResTypeMPtr->getPointeeType(); |
8127 | else |
8128 | done = true; |
8129 | if (CanTy.isVolatileQualified()) |
8130 | VRQuals.addVolatile(); |
8131 | if (VRQuals.hasRestrict() && VRQuals.hasVolatile()) |
8132 | return VRQuals; |
8133 | } |
8134 | } |
8135 | } |
8136 | return VRQuals; |
8137 | } |
8138 | |
8139 | namespace { |
8140 | |
8141 | |
8142 | |
8143 | |
8144 | |
8145 | class BuiltinOperatorOverloadBuilder { |
8146 | |
8147 | Sema &S; |
8148 | ArrayRef<Expr *> Args; |
8149 | Qualifiers VisibleTypeConversionsQuals; |
8150 | bool HasArithmeticOrEnumeralCandidateType; |
8151 | SmallVectorImpl<BuiltinCandidateTypeSet> &CandidateTypes; |
8152 | OverloadCandidateSet &CandidateSet; |
8153 | |
8154 | static constexpr int ArithmeticTypesCap = 24; |
8155 | SmallVector<CanQualType, ArithmeticTypesCap> ArithmeticTypes; |
8156 | |
8157 | |
8158 | |
8159 | |
8160 | unsigned FirstIntegralType, |
8161 | LastIntegralType; |
8162 | unsigned FirstPromotedIntegralType, |
8163 | LastPromotedIntegralType; |
8164 | unsigned FirstPromotedArithmeticType, |
8165 | LastPromotedArithmeticType; |
8166 | unsigned NumArithmeticTypes; |
8167 | |
8168 | void InitArithmeticTypes() { |
8169 | |
8170 | FirstPromotedArithmeticType = 0; |
8171 | ArithmeticTypes.push_back(S.Context.FloatTy); |
8172 | ArithmeticTypes.push_back(S.Context.DoubleTy); |
8173 | ArithmeticTypes.push_back(S.Context.LongDoubleTy); |
8174 | if (S.Context.getTargetInfo().hasFloat128Type()) |
8175 | ArithmeticTypes.push_back(S.Context.Float128Ty); |
8176 | |
8177 | |
8178 | FirstIntegralType = ArithmeticTypes.size(); |
8179 | FirstPromotedIntegralType = ArithmeticTypes.size(); |
8180 | ArithmeticTypes.push_back(S.Context.IntTy); |
8181 | ArithmeticTypes.push_back(S.Context.LongTy); |
8182 | ArithmeticTypes.push_back(S.Context.LongLongTy); |
8183 | if (S.Context.getTargetInfo().hasInt128Type() || |
8184 | (S.Context.getAuxTargetInfo() && |
8185 | S.Context.getAuxTargetInfo()->hasInt128Type())) |
8186 | ArithmeticTypes.push_back(S.Context.Int128Ty); |
8187 | ArithmeticTypes.push_back(S.Context.UnsignedIntTy); |
8188 | ArithmeticTypes.push_back(S.Context.UnsignedLongTy); |
8189 | ArithmeticTypes.push_back(S.Context.UnsignedLongLongTy); |
8190 | if (S.Context.getTargetInfo().hasInt128Type() || |
8191 | (S.Context.getAuxTargetInfo() && |
8192 | S.Context.getAuxTargetInfo()->hasInt128Type())) |
8193 | ArithmeticTypes.push_back(S.Context.UnsignedInt128Ty); |
8194 | LastPromotedIntegralType = ArithmeticTypes.size(); |
8195 | LastPromotedArithmeticType = ArithmeticTypes.size(); |
8196 | |
8197 | |
8198 | ArithmeticTypes.push_back(S.Context.BoolTy); |
8199 | ArithmeticTypes.push_back(S.Context.CharTy); |
8200 | ArithmeticTypes.push_back(S.Context.WCharTy); |
8201 | if (S.Context.getLangOpts().Char8) |
8202 | ArithmeticTypes.push_back(S.Context.Char8Ty); |
8203 | ArithmeticTypes.push_back(S.Context.Char16Ty); |
8204 | ArithmeticTypes.push_back(S.Context.Char32Ty); |
8205 | ArithmeticTypes.push_back(S.Context.SignedCharTy); |
8206 | ArithmeticTypes.push_back(S.Context.ShortTy); |
8207 | ArithmeticTypes.push_back(S.Context.UnsignedCharTy); |
8208 | ArithmeticTypes.push_back(S.Context.UnsignedShortTy); |
8209 | LastIntegralType = ArithmeticTypes.size(); |
8210 | NumArithmeticTypes = ArithmeticTypes.size(); |
8211 | |
8212 | |
8213 | |
8214 | assert(ArithmeticTypes.size() <= ArithmeticTypesCap && |
8215 | "Enough inline storage for all arithmetic types."); |
8216 | } |
8217 | |
8218 | |
8219 | |
8220 | void addPlusPlusMinusMinusStyleOverloads(QualType CandidateTy, |
8221 | bool HasVolatile, |
8222 | bool HasRestrict) { |
8223 | QualType ParamTypes[2] = { |
8224 | S.Context.getLValueReferenceType(CandidateTy), |
8225 | S.Context.IntTy |
8226 | }; |
8227 | |
8228 | |
8229 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet); |
8230 | |
8231 | |
8232 | |
8233 | if (HasVolatile) { |
8234 | ParamTypes[0] = |
8235 | S.Context.getLValueReferenceType( |
8236 | S.Context.getVolatileType(CandidateTy)); |
8237 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet); |
8238 | } |
8239 | |
8240 | |
8241 | |
8242 | if (HasRestrict && CandidateTy->isAnyPointerType() && |
8243 | !CandidateTy.isRestrictQualified()) { |
8244 | ParamTypes[0] |
8245 | = S.Context.getLValueReferenceType( |
8246 | S.Context.getCVRQualifiedType(CandidateTy, Qualifiers::Restrict)); |
8247 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet); |
8248 | |
8249 | if (HasVolatile) { |
8250 | ParamTypes[0] |
8251 | = S.Context.getLValueReferenceType( |
8252 | S.Context.getCVRQualifiedType(CandidateTy, |
8253 | (Qualifiers::Volatile | |
8254 | Qualifiers::Restrict))); |
8255 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet); |
8256 | } |
8257 | } |
8258 | |
8259 | } |
8260 | |
8261 | |
8262 | |
8263 | void AddCandidate(QualType L, QualType R) { |
8264 | QualType LandR[2] = {L, R}; |
8265 | S.AddBuiltinCandidate(LandR, Args, CandidateSet); |
8266 | } |
8267 | |
8268 | public: |
8269 | BuiltinOperatorOverloadBuilder( |
8270 | Sema &S, ArrayRef<Expr *> Args, |
8271 | Qualifiers VisibleTypeConversionsQuals, |
8272 | bool HasArithmeticOrEnumeralCandidateType, |
8273 | SmallVectorImpl<BuiltinCandidateTypeSet> &CandidateTypes, |
8274 | OverloadCandidateSet &CandidateSet) |
8275 | : S(S), Args(Args), |
8276 | VisibleTypeConversionsQuals(VisibleTypeConversionsQuals), |
8277 | HasArithmeticOrEnumeralCandidateType( |
8278 | HasArithmeticOrEnumeralCandidateType), |
8279 | CandidateTypes(CandidateTypes), |
8280 | CandidateSet(CandidateSet) { |
8281 | |
8282 | InitArithmeticTypes(); |
8283 | } |
8284 | |
8285 | |
8286 | |
8287 | |
8288 | |
8289 | |
8290 | |
8291 | |
8292 | |
8293 | |
8294 | |
8295 | |
8296 | |
8297 | |
8298 | |
8299 | |
8300 | |
8301 | |
8302 | |
8303 | |
8304 | void addPlusPlusMinusMinusArithmeticOverloads(OverloadedOperatorKind Op) { |
8305 | if (!HasArithmeticOrEnumeralCandidateType) |
8306 | return; |
8307 | |
8308 | for (unsigned Arith = 0; Arith < NumArithmeticTypes; ++Arith) { |
8309 | const auto TypeOfT = ArithmeticTypes[Arith]; |
8310 | if (TypeOfT == S.Context.BoolTy) { |
8311 | if (Op == OO_MinusMinus) |
8312 | continue; |
8313 | if (Op == OO_PlusPlus && S.getLangOpts().CPlusPlus17) |
8314 | continue; |
8315 | } |
8316 | addPlusPlusMinusMinusStyleOverloads( |
8317 | TypeOfT, |
8318 | VisibleTypeConversionsQuals.hasVolatile(), |
8319 | VisibleTypeConversionsQuals.hasRestrict()); |
8320 | } |
8321 | } |
8322 | |
8323 | |
8324 | |
8325 | |
8326 | |
8327 | |
8328 | |
8329 | |
8330 | |
8331 | |
8332 | |
8333 | void addPlusPlusMinusMinusPointerOverloads() { |
8334 | for (QualType PtrTy : CandidateTypes[0].pointer_types()) { |
8335 | |
8336 | if (!PtrTy->getPointeeType()->isObjectType()) |
8337 | continue; |
8338 | |
8339 | addPlusPlusMinusMinusStyleOverloads( |
8340 | PtrTy, |
8341 | (!PtrTy.isVolatileQualified() && |
8342 | VisibleTypeConversionsQuals.hasVolatile()), |
8343 | (!PtrTy.isRestrictQualified() && |
8344 | VisibleTypeConversionsQuals.hasRestrict())); |
8345 | } |
8346 | } |
8347 | |
8348 | |
8349 | |
8350 | |
8351 | |
8352 | |
8353 | |
8354 | |
8355 | |
8356 | |
8357 | |
8358 | void addUnaryStarPointerOverloads() { |
8359 | for (QualType ParamTy : CandidateTypes[0].pointer_types()) { |
8360 | QualType PointeeTy = ParamTy->getPointeeType(); |
8361 | if (!PointeeTy->isObjectType() && !PointeeTy->isFunctionType()) |
8362 | continue; |
8363 | |
8364 | if (const FunctionProtoType *Proto =PointeeTy->getAs<FunctionProtoType>()) |
8365 | if (Proto->getMethodQuals() || Proto->getRefQualifier()) |
8366 | continue; |
8367 | |
8368 | S.AddBuiltinCandidate(&ParamTy, Args, CandidateSet); |
8369 | } |
8370 | } |
8371 | |
8372 | |
8373 | |
8374 | |
8375 | |
8376 | |
8377 | |
8378 | void addUnaryPlusOrMinusArithmeticOverloads() { |
8379 | if (!HasArithmeticOrEnumeralCandidateType) |
8380 | return; |
8381 | |
8382 | for (unsigned Arith = FirstPromotedArithmeticType; |
8383 | Arith < LastPromotedArithmeticType; ++Arith) { |
8384 | QualType ArithTy = ArithmeticTypes[Arith]; |
8385 | S.AddBuiltinCandidate(&ArithTy, Args, CandidateSet); |
8386 | } |
8387 | |
8388 | |
8389 | for (QualType VecTy : CandidateTypes[0].vector_types()) |
8390 | S.AddBuiltinCandidate(&VecTy, Args, CandidateSet); |
8391 | } |
8392 | |
8393 | |
8394 | |
8395 | |
8396 | |
8397 | |
8398 | void addUnaryPlusPointerOverloads() { |
8399 | for (QualType ParamTy : CandidateTypes[0].pointer_types()) |
8400 | S.AddBuiltinCandidate(&ParamTy, Args, CandidateSet); |
8401 | } |
8402 | |
8403 | |
8404 | |
8405 | |
8406 | |
8407 | |
8408 | void addUnaryTildePromotedIntegralOverloads() { |
8409 | if (!HasArithmeticOrEnumeralCandidateType) |
8410 | return; |
8411 | |
8412 | for (unsigned Int = FirstPromotedIntegralType; |
8413 | Int < LastPromotedIntegralType; ++Int) { |
8414 | QualType IntTy = ArithmeticTypes[Int]; |
8415 | S.AddBuiltinCandidate(&IntTy, Args, CandidateSet); |
8416 | } |
8417 | |
8418 | |
8419 | for (QualType VecTy : CandidateTypes[0].vector_types()) |
8420 | S.AddBuiltinCandidate(&VecTy, Args, CandidateSet); |
8421 | } |
8422 | |
8423 | |
8424 | |
8425 | |
8426 | |
8427 | |
8428 | |
8429 | void addEqualEqualOrNotEqualMemberPointerOrNullptrOverloads() { |
8430 | |
8431 | llvm::SmallPtrSet<QualType, 8> AddedTypes; |
8432 | |
8433 | for (unsigned ArgIdx = 0, N = Args.size(); ArgIdx != N; ++ArgIdx) { |
8434 | for (QualType MemPtrTy : CandidateTypes[ArgIdx].member_pointer_types()) { |
8435 | |
8436 | if (!AddedTypes.insert(S.Context.getCanonicalType(MemPtrTy)).second) |
8437 | continue; |
8438 | |
8439 | QualType ParamTypes[2] = {MemPtrTy, MemPtrTy}; |
8440 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet); |
8441 | } |
8442 | |
8443 | if (CandidateTypes[ArgIdx].hasNullPtrType()) { |
8444 | CanQualType NullPtrTy = S.Context.getCanonicalType(S.Context.NullPtrTy); |
8445 | if (AddedTypes.insert(NullPtrTy).second) { |
8446 | QualType ParamTypes[2] = { NullPtrTy, NullPtrTy }; |
8447 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet); |
8448 | } |
8449 | } |
8450 | } |
8451 | } |
8452 | |
8453 | |
8454 | |
8455 | |
8456 | |
8457 | |
8458 | |
8459 | |
8460 | |
8461 | |
8462 | |
8463 | |
8464 | |
8465 | void addGenericBinaryPointerOrEnumeralOverloads(bool IsSpaceship) { |
8466 | |
8467 | |
8468 | |
8469 | |
8470 | |
8471 | |
8472 | |
8473 | |
8474 | |
8475 | |
8476 | |
8477 | |
8478 | llvm::DenseSet<std::pair<CanQualType, CanQualType> > |
8479 | UserDefinedBinaryOperators; |
8480 | |
8481 | for (unsigned ArgIdx = 0, N = Args.size(); ArgIdx != N; ++ArgIdx) { |
8482 | if (!CandidateTypes[ArgIdx].enumeration_types().empty()) { |
8483 | for (OverloadCandidateSet::iterator C = CandidateSet.begin(), |
8484 | CEnd = CandidateSet.end(); |
8485 | C != CEnd; ++C) { |
8486 | if (!C->Viable || !C->Function || C->Function->getNumParams() != 2) |
8487 | continue; |
8488 | |
8489 | if (C->Function->isFunctionTemplateSpecialization()) |
8490 | continue; |
8491 | |
8492 | |
8493 | |
8494 | |
8495 | bool Reversed = C->isReversed(); |
8496 | QualType FirstParamType = C->Function->getParamDecl(Reversed ? 1 : 0) |
8497 | ->getType() |
8498 | .getUnqualifiedType(); |
8499 | QualType SecondParamType = C->Function->getParamDecl(Reversed ? 0 : 1) |
8500 | ->getType() |
8501 | .getUnqualifiedType(); |
8502 | |
8503 | |
8504 | if (!FirstParamType->isEnumeralType() || |
8505 | !SecondParamType->isEnumeralType()) |
8506 | continue; |
8507 | |
8508 | |
8509 | UserDefinedBinaryOperators.insert( |
8510 | std::make_pair(S.Context.getCanonicalType(FirstParamType), |
8511 | S.Context.getCanonicalType(SecondParamType))); |
8512 | } |
8513 | } |
8514 | } |
8515 | |
8516 | |
8517 | llvm::SmallPtrSet<QualType, 8> AddedTypes; |
8518 | |
8519 | for (unsigned ArgIdx = 0, N = Args.size(); ArgIdx != N; ++ArgIdx) { |
8520 | for (QualType PtrTy : CandidateTypes[ArgIdx].pointer_types()) { |
8521 | |
8522 | if (!AddedTypes.insert(S.Context.getCanonicalType(PtrTy)).second) |
8523 | continue; |
8524 | if (IsSpaceship && PtrTy->isFunctionPointerType()) |
8525 | continue; |
8526 | |
8527 | QualType ParamTypes[2] = {PtrTy, PtrTy}; |
8528 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet); |
8529 | } |
8530 | for (QualType EnumTy : CandidateTypes[ArgIdx].enumeration_types()) { |
8531 | CanQualType CanonType = S.Context.getCanonicalType(EnumTy); |
8532 | |
8533 | |
8534 | |
8535 | if (!AddedTypes.insert(CanonType).second || |
8536 | UserDefinedBinaryOperators.count(std::make_pair(CanonType, |
8537 | CanonType))) |
8538 | continue; |
8539 | QualType ParamTypes[2] = {EnumTy, EnumTy}; |
8540 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet); |
8541 | } |
8542 | } |
8543 | } |
8544 | |
8545 | |
8546 | |
8547 | |
8548 | |
8549 | |
8550 | |
8551 | |
8552 | |
8553 | |
8554 | |
8555 | |
8556 | |
8557 | |
8558 | |
8559 | |
8560 | |
8561 | |
8562 | void addBinaryPlusOrMinusPointerOverloads(OverloadedOperatorKind Op) { |
8563 | |
8564 | llvm::SmallPtrSet<QualType, 8> AddedTypes; |
8565 | |
8566 | for (int Arg = 0; Arg < 2; ++Arg) { |
8567 | QualType AsymmetricParamTypes[2] = { |
8568 | S.Context.getPointerDiffType(), |
8569 | S.Context.getPointerDiffType(), |
8570 | }; |
8571 | for (QualType PtrTy : CandidateTypes[Arg].pointer_types()) { |
8572 | QualType PointeeTy = PtrTy->getPointeeType(); |
8573 | if (!PointeeTy->isObjectType()) |
8574 | continue; |
8575 | |
8576 | AsymmetricParamTypes[Arg] = PtrTy; |
8577 | if (Arg == 0 || Op == OO_Plus) { |
8578 | |
8579 | |
8580 | S.AddBuiltinCandidate(AsymmetricParamTypes, Args, CandidateSet); |
8581 | } |
8582 | if (Op == OO_Minus) { |
8583 | |
8584 | if (!AddedTypes.insert(S.Context.getCanonicalType(PtrTy)).second) |
8585 | continue; |
8586 | |
8587 | QualType ParamTypes[2] = {PtrTy, PtrTy}; |
8588 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet); |
8589 | } |
8590 | } |
8591 | } |
8592 | } |
8593 | |
8594 | |
8595 | |
8596 | |
8597 | |
8598 | |
8599 | |
8600 | |
8601 | |
8602 | |
8603 | |
8604 | |
8605 | |
8606 | |
8607 | |
8608 | |
8609 | |
8610 | |
8611 | |
8612 | |
8613 | |
8614 | |
8615 | |
8616 | |
8617 | |
8618 | |
8619 | |
8620 | |
8621 | |
8622 | |
8623 | void addGenericBinaryArithmeticOverloads() { |
8624 | if (!HasArithmeticOrEnumeralCandidateType) |
8625 | return; |
8626 | |
8627 | for (unsigned Left = FirstPromotedArithmeticType; |
8628 | Left < LastPromotedArithmeticType; ++Left) { |
8629 | for (unsigned Right = FirstPromotedArithmeticType; |
8630 | Right < LastPromotedArithmeticType; ++Right) { |
8631 | QualType LandR[2] = { ArithmeticTypes[Left], |
8632 | ArithmeticTypes[Right] }; |
8633 | S.AddBuiltinCandidate(LandR, Args, CandidateSet); |
8634 | } |
8635 | } |
8636 | |
8637 | |
8638 | |
8639 | for (QualType Vec1Ty : CandidateTypes[0].vector_types()) |
8640 | for (QualType Vec2Ty : CandidateTypes[1].vector_types()) { |
8641 | QualType LandR[2] = {Vec1Ty, Vec2Ty}; |
8642 | S.AddBuiltinCandidate(LandR, Args, CandidateSet); |
8643 | } |
8644 | } |
8645 | |
8646 | |
8647 | |
8648 | |
8649 | |
8650 | |
8651 | void addMatrixBinaryArithmeticOverloads() { |
8652 | if (!HasArithmeticOrEnumeralCandidateType) |
8653 | return; |
8654 | |
8655 | for (QualType M1 : CandidateTypes[0].matrix_types()) { |
8656 | AddCandidate(M1, cast<MatrixType>(M1)->getElementType()); |
8657 | AddCandidate(M1, M1); |
8658 | } |
8659 | |
8660 | for (QualType M2 : CandidateTypes[1].matrix_types()) { |
8661 | AddCandidate(cast<MatrixType>(M2)->getElementType(), M2); |
8662 | if (!CandidateTypes[0].containsMatrixType(M2)) |
8663 | AddCandidate(M2, M2); |
8664 | } |
8665 | } |
8666 | |
8667 | |
8668 | |
8669 | |
8670 | |
8671 | |
8672 | |
8673 | |
8674 | |
8675 | |
8676 | |
8677 | |
8678 | |
8679 | |
8680 | |
8681 | |
8682 | |
8683 | |
8684 | |
8685 | |
8686 | |
8687 | |
8688 | |
8689 | |
8690 | |
8691 | |
8692 | |
8693 | |
8694 | |
8695 | |
8696 | |
8697 | |
8698 | void addThreeWayArithmeticOverloads() { |
8699 | addGenericBinaryArithmeticOverloads(); |
8700 | } |
8701 | |
8702 | |
8703 | |
8704 | |
8705 | |
8706 | |
8707 | |
8708 | |
8709 | |
8710 | |
8711 | |
8712 | |
8713 | |
8714 | |
8715 | |
8716 | void addBinaryBitwiseArithmeticOverloads() { |
8717 | if (!HasArithmeticOrEnumeralCandidateType) |
8718 | return; |
8719 | |
8720 | for (unsigned Left = FirstPromotedIntegralType; |
8721 | Left < LastPromotedIntegralType; ++Left) { |
8722 | for (unsigned Right = FirstPromotedIntegralType; |
8723 | Right < LastPromotedIntegralType; ++Right) { |
8724 | QualType LandR[2] = { ArithmeticTypes[Left], |
8725 | ArithmeticTypes[Right] }; |
8726 | S.AddBuiltinCandidate(LandR, Args, CandidateSet); |
8727 | } |
8728 | } |
8729 | } |
8730 | |
8731 | |
8732 | |
8733 | |
8734 | |
8735 | |
8736 | |
8737 | |
8738 | void addAssignmentMemberPointerOrEnumeralOverloads() { |
8739 | |
8740 | llvm::SmallPtrSet<QualType, 8> AddedTypes; |
8741 | |
8742 | for (unsigned ArgIdx = 0; ArgIdx < 2; ++ArgIdx) { |
8743 | for (QualType EnumTy : CandidateTypes[ArgIdx].enumeration_types()) { |
8744 | if (!AddedTypes.insert(S.Context.getCanonicalType(EnumTy)).second) |
8745 | continue; |
8746 | |
8747 | AddBuiltinAssignmentOperatorCandidates(S, EnumTy, Args, CandidateSet); |
8748 | } |
8749 | |
8750 | for (QualType MemPtrTy : CandidateTypes[ArgIdx].member_pointer_types()) { |
8751 | if (!AddedTypes.insert(S.Context.getCanonicalType(MemPtrTy)).second) |
8752 | continue; |
8753 | |
8754 | AddBuiltinAssignmentOperatorCandidates(S, MemPtrTy, Args, CandidateSet); |
8755 | } |
8756 | } |
8757 | } |
8758 | |
8759 | |
8760 | |
8761 | |
8762 | |
8763 | |
8764 | |
8765 | |
8766 | |
8767 | |
8768 | |
8769 | |
8770 | |
8771 | |
8772 | |
8773 | |
8774 | |
8775 | void addAssignmentPointerOverloads(bool isEqualOp) { |
8776 | |
8777 | llvm::SmallPtrSet<QualType, 8> AddedTypes; |
8778 | |
8779 | for (QualType PtrTy : CandidateTypes[0].pointer_types()) { |
8780 | |
8781 | if (isEqualOp) |
8782 | AddedTypes.insert(S.Context.getCanonicalType(PtrTy)); |
8783 | else if (!PtrTy->getPointeeType()->isObjectType()) |
8784 | continue; |
8785 | |
8786 | |
8787 | QualType ParamTypes[2] = { |
8788 | S.Context.getLValueReferenceType(PtrTy), |
8789 | isEqualOp ? PtrTy : S.Context.getPointerDiffType(), |
8790 | }; |
8791 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet, |
8792 | isEqualOp); |
8793 | |
8794 | bool NeedVolatile = !PtrTy.isVolatileQualified() && |
8795 | VisibleTypeConversionsQuals.hasVolatile(); |
8796 | if (NeedVolatile) { |
8797 | |
8798 | ParamTypes[0] = |
8799 | S.Context.getLValueReferenceType(S.Context.getVolatileType(PtrTy)); |
8800 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet, |
8801 | isEqualOp); |
8802 | } |
8803 | |
8804 | if (!PtrTy.isRestrictQualified() && |
8805 | VisibleTypeConversionsQuals.hasRestrict()) { |
8806 | |
8807 | ParamTypes[0] = |
8808 | S.Context.getLValueReferenceType(S.Context.getRestrictType(PtrTy)); |
8809 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet, |
8810 | isEqualOp); |
8811 | |
8812 | if (NeedVolatile) { |
8813 | |
8814 | ParamTypes[0] = |
8815 | S.Context.getLValueReferenceType(S.Context.getCVRQualifiedType( |
8816 | PtrTy, (Qualifiers::Volatile | Qualifiers::Restrict))); |
8817 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet, |
8818 | isEqualOp); |
8819 | } |
8820 | } |
8821 | } |
8822 | |
8823 | if (isEqualOp) { |
8824 | for (QualType PtrTy : CandidateTypes[1].pointer_types()) { |
8825 | |
8826 | if (!AddedTypes.insert(S.Context.getCanonicalType(PtrTy)).second) |
8827 | continue; |
8828 | |
8829 | QualType ParamTypes[2] = { |
8830 | S.Context.getLValueReferenceType(PtrTy), |
8831 | PtrTy, |
8832 | }; |
8833 | |
8834 | |
8835 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet, |
8836 | true); |
8837 | |
8838 | bool NeedVolatile = !PtrTy.isVolatileQualified() && |
8839 | VisibleTypeConversionsQuals.hasVolatile(); |
8840 | if (NeedVolatile) { |
8841 | |
8842 | ParamTypes[0] = S.Context.getLValueReferenceType( |
8843 | S.Context.getVolatileType(PtrTy)); |
8844 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet, |
8845 | true); |
8846 | } |
8847 | |
8848 | if (!PtrTy.isRestrictQualified() && |
8849 | VisibleTypeConversionsQuals.hasRestrict()) { |
8850 | |
8851 | ParamTypes[0] = S.Context.getLValueReferenceType( |
8852 | S.Context.getRestrictType(PtrTy)); |
8853 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet, |
8854 | true); |
8855 | |
8856 | if (NeedVolatile) { |
8857 | |
8858 | ParamTypes[0] = |
8859 | S.Context.getLValueReferenceType(S.Context.getCVRQualifiedType( |
8860 | PtrTy, (Qualifiers::Volatile | Qualifiers::Restrict))); |
8861 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet, |
8862 | true); |
8863 | } |
8864 | } |
8865 | } |
8866 | } |
8867 | } |
8868 | |
8869 | |
8870 | |
8871 | |
8872 | |
8873 | |
8874 | |
8875 | |
8876 | |
8877 | |
8878 | |
8879 | |
8880 | |
8881 | void addAssignmentArithmeticOverloads(bool isEqualOp) { |
8882 | if (!HasArithmeticOrEnumeralCandidateType) |
8883 | return; |
8884 | |
8885 | for (unsigned Left = 0; Left < NumArithmeticTypes; ++Left) { |
8886 | for (unsigned Right = FirstPromotedArithmeticType; |
8887 | Right < LastPromotedArithmeticType; ++Right) { |
8888 | QualType ParamTypes[2]; |
8889 | ParamTypes[1] = ArithmeticTypes[Right]; |
8890 | auto LeftBaseTy = AdjustAddressSpaceForBuiltinOperandType( |
8891 | S, ArithmeticTypes[Left], Args[0]); |
8892 | |
8893 | ParamTypes[0] = S.Context.getLValueReferenceType(LeftBaseTy); |
8894 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet, |
8895 | isEqualOp); |
8896 | |
8897 | |
8898 | if (VisibleTypeConversionsQuals.hasVolatile()) { |
8899 | ParamTypes[0] = S.Context.getVolatileType(LeftBaseTy); |
8900 | ParamTypes[0] = S.Context.getLValueReferenceType(ParamTypes[0]); |
8901 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet, |
8902 | isEqualOp); |
8903 | } |
8904 | } |
8905 | } |
8906 | |
8907 | |
8908 | for (QualType Vec1Ty : CandidateTypes[0].vector_types()) |
8909 | for (QualType Vec2Ty : CandidateTypes[0].vector_types()) { |
8910 | QualType ParamTypes[2]; |
8911 | ParamTypes[1] = Vec2Ty; |
8912 | |
8913 | ParamTypes[0] = S.Context.getLValueReferenceType(Vec1Ty); |
8914 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet, |
8915 | isEqualOp); |
8916 | |
8917 | |
8918 | if (VisibleTypeConversionsQuals.hasVolatile()) { |
8919 | ParamTypes[0] = S.Context.getVolatileType(Vec1Ty); |
8920 | ParamTypes[0] = S.Context.getLValueReferenceType(ParamTypes[0]); |
8921 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet, |
8922 | isEqualOp); |
8923 | } |
8924 | } |
8925 | } |
8926 | |
8927 | |
8928 | |
8929 | |
8930 | |
8931 | |
8932 | |
8933 | |
8934 | |
8935 | |
8936 | |
8937 | |
8938 | |
8939 | void addAssignmentIntegralOverloads() { |
8940 | if (!HasArithmeticOrEnumeralCandidateType) |
8941 | return; |
8942 | |
8943 | for (unsigned Left = FirstIntegralType; Left < LastIntegralType; ++Left) { |
8944 | for (unsigned Right = FirstPromotedIntegralType; |
8945 | Right < LastPromotedIntegralType; ++Right) { |
8946 | QualType ParamTypes[2]; |
8947 | ParamTypes[1] = ArithmeticTypes[Right]; |
8948 | auto LeftBaseTy = AdjustAddressSpaceForBuiltinOperandType( |
8949 | S, ArithmeticTypes[Left], Args[0]); |
8950 | |
8951 | ParamTypes[0] = S.Context.getLValueReferenceType(LeftBaseTy); |
8952 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet); |
8953 | if (VisibleTypeConversionsQuals.hasVolatile()) { |
8954 | |
8955 | ParamTypes[0] = LeftBaseTy; |
8956 | ParamTypes[0] = S.Context.getVolatileType(ParamTypes[0]); |
8957 | ParamTypes[0] = S.Context.getLValueReferenceType(ParamTypes[0]); |
8958 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet); |
8959 | } |
8960 | } |
8961 | } |
8962 | } |
8963 | |
8964 | |
8965 | |
8966 | |
8967 | |
8968 | |
8969 | |
8970 | |
8971 | void addExclaimOverload() { |
8972 | QualType ParamTy = S.Context.BoolTy; |
8973 | S.AddBuiltinCandidate(&ParamTy, Args, CandidateSet, |
8974 | false, |
8975 | 1); |
8976 | } |
8977 | void addAmpAmpOrPipePipeOverload() { |
8978 | QualType ParamTypes[2] = { S.Context.BoolTy, S.Context.BoolTy }; |
8979 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet, |
8980 | false, |
8981 | 2); |
8982 | } |
8983 | |
8984 | |
8985 | |
8986 | |
8987 | |
8988 | |
8989 | |
8990 | |
8991 | |
8992 | |
8993 | |
8994 | void addSubscriptOverloads() { |
8995 | for (QualType PtrTy : CandidateTypes[0].pointer_types()) { |
8996 | QualType ParamTypes[2] = {PtrTy, S.Context.getPointerDiffType()}; |
8997 | QualType PointeeType = PtrTy->getPointeeType(); |
8998 | if (!PointeeType->isObjectType()) |
8999 | continue; |
9000 | |
9001 | |
9002 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet); |
9003 | } |
9004 | |
9005 | for (QualType PtrTy : CandidateTypes[1].pointer_types()) { |
9006 | QualType ParamTypes[2] = {S.Context.getPointerDiffType(), PtrTy}; |
9007 | QualType PointeeType = PtrTy->getPointeeType(); |
9008 | if (!PointeeType->isObjectType()) |
9009 | continue; |
9010 | |
9011 | |
9012 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet); |
9013 | } |
9014 | } |
9015 | |
9016 | |
9017 | |
9018 | |
9019 | |
9020 | |
9021 | |
9022 | |
9023 | |
9024 | |
9025 | void addArrowStarOverloads() { |
9026 | for (QualType PtrTy : CandidateTypes[0].pointer_types()) { |
9027 | QualType C1Ty = PtrTy; |
9028 | QualType C1; |
9029 | QualifierCollector Q1; |
9030 | C1 = QualType(Q1.strip(C1Ty->getPointeeType()), 0); |
9031 | if (!isa<RecordType>(C1)) |
9032 | continue; |
9033 | |
9034 | |
9035 | |
9036 | if (!VisibleTypeConversionsQuals.hasVolatile() && Q1.hasVolatile()) |
9037 | continue; |
9038 | if (!VisibleTypeConversionsQuals.hasRestrict() && Q1.hasRestrict()) |
9039 | continue; |
9040 | for (QualType MemPtrTy : CandidateTypes[1].member_pointer_types()) { |
9041 | const MemberPointerType *mptr = cast<MemberPointerType>(MemPtrTy); |
9042 | QualType C2 = QualType(mptr->getClass(), 0); |
9043 | C2 = C2.getUnqualifiedType(); |
9044 | if (C1 != C2 && !S.IsDerivedFrom(CandidateSet.getLocation(), C1, C2)) |
9045 | break; |
9046 | QualType ParamTypes[2] = {PtrTy, MemPtrTy}; |
9047 | |
9048 | QualType T = mptr->getPointeeType(); |
9049 | if (!VisibleTypeConversionsQuals.hasVolatile() && |
9050 | T.isVolatileQualified()) |
9051 | continue; |
9052 | if (!VisibleTypeConversionsQuals.hasRestrict() && |
9053 | T.isRestrictQualified()) |
9054 | continue; |
9055 | T = Q1.apply(S.Context, T); |
9056 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet); |
9057 | } |
9058 | } |
9059 | } |
9060 | |
9061 | |
9062 | |
9063 | |
9064 | |
9065 | |
9066 | |
9067 | |
9068 | |
9069 | |
9070 | |
9071 | void addConditionalOperatorOverloads() { |
9072 | |
9073 | llvm::SmallPtrSet<QualType, 8> AddedTypes; |
9074 | |
9075 | for (unsigned ArgIdx = 0; ArgIdx < 2; ++ArgIdx) { |
9076 | for (QualType PtrTy : CandidateTypes[ArgIdx].pointer_types()) { |
9077 | if (!AddedTypes.insert(S.Context.getCanonicalType(PtrTy)).second) |
9078 | continue; |
9079 | |
9080 | QualType ParamTypes[2] = {PtrTy, PtrTy}; |
9081 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet); |
9082 | } |
9083 | |
9084 | for (QualType MemPtrTy : CandidateTypes[ArgIdx].member_pointer_types()) { |
9085 | if (!AddedTypes.insert(S.Context.getCanonicalType(MemPtrTy)).second) |
9086 | continue; |
9087 | |
9088 | QualType ParamTypes[2] = {MemPtrTy, MemPtrTy}; |
9089 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet); |
9090 | } |
9091 | |
9092 | if (S.getLangOpts().CPlusPlus11) { |
9093 | for (QualType EnumTy : CandidateTypes[ArgIdx].enumeration_types()) { |
9094 | if (!EnumTy->castAs<EnumType>()->getDecl()->isScoped()) |
9095 | continue; |
9096 | |
9097 | if (!AddedTypes.insert(S.Context.getCanonicalType(EnumTy)).second) |
9098 | continue; |
9099 | |
9100 | QualType ParamTypes[2] = {EnumTy, EnumTy}; |
9101 | S.AddBuiltinCandidate(ParamTypes, Args, CandidateSet); |
9102 | } |
9103 | } |
9104 | } |
9105 | } |
9106 | }; |
9107 | |
9108 | } |
9109 | |
9110 | |
9111 | |
9112 | |
9113 | |
9114 | |
9115 | void Sema::AddBuiltinOperatorCandidates(OverloadedOperatorKind Op, |
9116 | SourceLocation OpLoc, |
9117 | ArrayRef<Expr *> Args, |
9118 | OverloadCandidateSet &CandidateSet) { |
9119 | |
9120 | |
9121 | |
9122 | |
9123 | Qualifiers VisibleTypeConversionsQuals; |
9124 | VisibleTypeConversionsQuals.addConst(); |
9125 | for (unsigned ArgIdx = 0, N = Args.size(); ArgIdx != N; ++ArgIdx) |
9126 | VisibleTypeConversionsQuals += CollectVRQualifiers(Context, Args[ArgIdx]); |
9127 | |
9128 | bool HasNonRecordCandidateType = false; |
9129 | bool HasArithmeticOrEnumeralCandidateType = false; |
9130 | SmallVector<BuiltinCandidateTypeSet, 2> CandidateTypes; |
9131 | for (unsigned ArgIdx = 0, N = Args.size(); ArgIdx != N; ++ArgIdx) { |
9132 | CandidateTypes.emplace_back(*this); |
9133 | CandidateTypes[ArgIdx].AddTypesConvertedFrom(Args[ArgIdx]->getType(), |
9134 | OpLoc, |
9135 | true, |
9136 | (Op == OO_Exclaim || |
9137 | Op == OO_AmpAmp || |
9138 | Op == OO_PipePipe), |
9139 | VisibleTypeConversionsQuals); |
9140 | HasNonRecordCandidateType = HasNonRecordCandidateType || |
9141 | CandidateTypes[ArgIdx].hasNonRecordTypes(); |
9142 | HasArithmeticOrEnumeralCandidateType = |
9143 | HasArithmeticOrEnumeralCandidateType || |
9144 | CandidateTypes[ArgIdx].hasArithmeticOrEnumeralTypes(); |
9145 | } |
9146 | |
9147 | |
9148 | |
9149 | |
9150 | |
9151 | |
9152 | if (!HasNonRecordCandidateType && |
9153 | !(Op == OO_Exclaim || Op == OO_AmpAmp || Op == OO_PipePipe)) |
9154 | return; |
9155 | |
9156 | |
9157 | BuiltinOperatorOverloadBuilder OpBuilder(*this, Args, |
9158 | VisibleTypeConversionsQuals, |
9159 | HasArithmeticOrEnumeralCandidateType, |
9160 | CandidateTypes, CandidateSet); |
9161 | |
9162 | |
9163 | switch (Op) { |
9164 | case OO_None: |
9165 | case NUM_OVERLOADED_OPERATORS: |
9166 | llvm_unreachable("Expected an overloaded operator"); |
9167 | |
9168 | case OO_New: |
9169 | case OO_Delete: |
9170 | case OO_Array_New: |
9171 | case OO_Array_Delete: |
9172 | case OO_Call: |
9173 | llvm_unreachable( |
9174 | "Special operators don't use AddBuiltinOperatorCandidates"); |
9175 | |
9176 | case OO_Comma: |
9177 | case OO_Arrow: |
9178 | case OO_Coawait: |
9179 | |
9180 | |
9181 | |
9182 | |
9183 | break; |
9184 | |
9185 | case OO_Plus: |
9186 | if (Args.size() == 1) |
9187 | OpBuilder.addUnaryPlusPointerOverloads(); |
9188 | LLVM_FALLTHROUGH; |
9189 | |
9190 | case OO_Minus: |
9191 | if (Args.size() == 1) { |
9192 | OpBuilder.addUnaryPlusOrMinusArithmeticOverloads(); |
9193 | } else { |
9194 | OpBuilder.addBinaryPlusOrMinusPointerOverloads(Op); |
9195 | OpBuilder.addGenericBinaryArithmeticOverloads(); |
9196 | OpBuilder.addMatrixBinaryArithmeticOverloads(); |
9197 | } |
9198 | break; |
9199 | |
9200 | case OO_Star: |
9201 | if (Args.size() == 1) |
9202 | OpBuilder.addUnaryStarPointerOverloads(); |
9203 | else { |
9204 | OpBuilder.addGenericBinaryArithmeticOverloads(); |
9205 | OpBuilder.addMatrixBinaryArithmeticOverloads(); |
9206 | } |
9207 | break; |
9208 | |
9209 | case OO_Slash: |
9210 | OpBuilder.addGenericBinaryArithmeticOverloads(); |
9211 | break; |
9212 | |
9213 | case OO_PlusPlus: |
9214 | case OO_MinusMinus: |
9215 | OpBuilder.addPlusPlusMinusMinusArithmeticOverloads(Op); |
9216 | OpBuilder.addPlusPlusMinusMinusPointerOverloads(); |
9217 | break; |
9218 | |
9219 | case OO_EqualEqual: |
9220 | case OO_ExclaimEqual: |
9221 | OpBuilder.addEqualEqualOrNotEqualMemberPointerOrNullptrOverloads(); |
9222 | OpBuilder.addGenericBinaryPointerOrEnumeralOverloads(false); |
9223 | OpBuilder.addGenericBinaryArithmeticOverloads(); |
9224 | break; |
9225 | |
9226 | case OO_Less: |
9227 | case OO_Greater: |
9228 | case OO_LessEqual: |
9229 | case OO_GreaterEqual: |
9230 | OpBuilder.addGenericBinaryPointerOrEnumeralOverloads(false); |
9231 | OpBuilder.addGenericBinaryArithmeticOverloads(); |
9232 | break; |
9233 | |
9234 | case OO_Spaceship: |
9235 | OpBuilder.addGenericBinaryPointerOrEnumeralOverloads(true); |
9236 | OpBuilder.addThreeWayArithmeticOverloads(); |
9237 | break; |
9238 | |
9239 | case OO_Percent: |
9240 | case OO_Caret: |
9241 | case OO_Pipe: |
9242 | case OO_LessLess: |
9243 | case OO_GreaterGreater: |
9244 | OpBuilder.addBinaryBitwiseArithmeticOverloads(); |
9245 | break; |
9246 | |
9247 | case OO_Amp: |
9248 | if (Args.size() == 1) |
9249 | |
9250 | |
9251 | |
9252 | break; |
9253 | |
9254 | OpBuilder.addBinaryBitwiseArithmeticOverloads(); |
9255 | break; |
9256 | |
9257 | case OO_Tilde: |
9258 | OpBuilder.addUnaryTildePromotedIntegralOverloads(); |
9259 | break; |
9260 | |
9261 | case OO_Equal: |
9262 | OpBuilder.addAssignmentMemberPointerOrEnumeralOverloads(); |
9263 | LLVM_FALLTHROUGH; |
9264 | |
9265 | case OO_PlusEqual: |
9266 | case OO_MinusEqual: |
9267 | OpBuilder.addAssignmentPointerOverloads(Op == OO_Equal); |
9268 | LLVM_FALLTHROUGH; |
9269 | |
9270 | case OO_StarEqual: |
9271 | case OO_SlashEqual: |
9272 | OpBuilder.addAssignmentArithmeticOverloads(Op == OO_Equal); |
9273 | break; |
9274 | |
9275 | case OO_PercentEqual: |
9276 | case OO_LessLessEqual: |
9277 | case OO_GreaterGreaterEqual: |
9278 | case OO_AmpEqual: |
9279 | case OO_CaretEqual: |
9280 | case OO_PipeEqual: |
9281 | OpBuilder.addAssignmentIntegralOverloads(); |
9282 | break; |
9283 | |
9284 | case OO_Exclaim: |
9285 | OpBuilder.addExclaimOverload(); |
9286 | break; |
9287 | |
9288 | case OO_AmpAmp: |
9289 | case OO_PipePipe: |
9290 | OpBuilder.addAmpAmpOrPipePipeOverload(); |
9291 | break; |
9292 | |
9293 | case OO_Subscript: |
9294 | OpBuilder.addSubscriptOverloads(); |
9295 | break; |
9296 | |
9297 | case OO_ArrowStar: |
9298 | OpBuilder.addArrowStarOverloads(); |
9299 | break; |
9300 | |
9301 | case OO_Conditional: |
9302 | OpBuilder.addConditionalOperatorOverloads(); |
9303 | OpBuilder.addGenericBinaryArithmeticOverloads(); |
9304 | break; |
9305 | } |
9306 | } |
9307 | |
9308 | |
9309 | |
9310 | |
9311 | |
9312 | |
9313 | |
9314 | |
9315 | void |
9316 | Sema::AddArgumentDependentLookupCandidates(DeclarationName Name, |
9317 | SourceLocation Loc, |
9318 | ArrayRef<Expr *> Args, |
9319 | TemplateArgumentListInfo *ExplicitTemplateArgs, |
9320 | OverloadCandidateSet& CandidateSet, |
9321 | bool PartialOverloading) { |
9322 | ADLResult Fns; |
9323 | |
9324 | |
9325 | |
9326 | |
9327 | |
9328 | |
9329 | |
9330 | |
9331 | |
9332 | ArgumentDependentLookup(Name, Loc, Args, Fns); |
9333 | |
9334 | |
9335 | for (OverloadCandidateSet::iterator Cand = CandidateSet.begin(), |
9336 | CandEnd = CandidateSet.end(); |
9337 | Cand != CandEnd; ++Cand) |
9338 | if (Cand->Function) { |
9339 | Fns.erase(Cand->Function); |
9340 | if (FunctionTemplateDecl *FunTmpl = Cand->Function->getPrimaryTemplate()) |
9341 | Fns.erase(FunTmpl); |
9342 | } |
9343 | |
9344 | |
9345 | |
9346 | for (ADLResult::iterator I = Fns.begin(), E = Fns.end(); I != E; ++I) { |
9347 | DeclAccessPair FoundDecl = DeclAccessPair::make(*I, AS_none); |
9348 | |
9349 | if (FunctionDecl *FD = dyn_cast<FunctionDecl>(*I)) { |
9350 | if (ExplicitTemplateArgs) |
9351 | continue; |
9352 | |
9353 | AddOverloadCandidate( |
9354 | FD, FoundDecl, Args, CandidateSet, false, |
9355 | PartialOverloading, true, |
9356 | false, ADLCallKind::UsesADL); |
9357 | if (CandidateSet.getRewriteInfo().shouldAddReversed(Context, FD)) { |
9358 | AddOverloadCandidate( |
9359 | FD, FoundDecl, {Args[1], Args[0]}, CandidateSet, |
9360 | false, PartialOverloading, |
9361 | true, false, |
9362 | ADLCallKind::UsesADL, None, OverloadCandidateParamOrder::Reversed); |
9363 | } |
9364 | } else { |
9365 | auto *FTD = cast<FunctionTemplateDecl>(*I); |
9366 | AddTemplateOverloadCandidate( |
9367 | FTD, FoundDecl, ExplicitTemplateArgs, Args, CandidateSet, |
9368 | false, PartialOverloading, |
9369 | true, ADLCallKind::UsesADL); |
9370 | if (CandidateSet.getRewriteInfo().shouldAddReversed( |
9371 | Context, FTD->getTemplatedDecl())) { |
9372 | AddTemplateOverloadCandidate( |
9373 | FTD, FoundDecl, ExplicitTemplateArgs, {Args[1], Args[0]}, |
9374 | CandidateSet, false, PartialOverloading, |
9375 | true, ADLCallKind::UsesADL, |
9376 | OverloadCandidateParamOrder::Reversed); |
9377 | } |
9378 | } |
9379 | } |
9380 | } |
9381 | |
9382 | namespace { |
9383 | enum class Comparison { Equal, Better, Worse }; |
9384 | } |
9385 | |
9386 | |
9387 | |
9388 | |
9389 | |
9390 | |
9391 | |
9392 | |
9393 | |
9394 | |
9395 | |
9396 | |
9397 | static Comparison compareEnableIfAttrs(const Sema &S, const FunctionDecl *Cand1, |
9398 | const FunctionDecl *Cand2) { |
9399 | |
9400 | bool Cand1Attr = Cand1->hasAttr<EnableIfAttr>(); |
9401 | bool Cand2Attr = Cand2->hasAttr<EnableIfAttr>(); |
9402 | if (!Cand1Attr || !Cand2Attr) { |
9403 | if (Cand1Attr == Cand2Attr) |
9404 | return Comparison::Equal; |
9405 | return Cand1Attr ? Comparison::Better : Comparison::Worse; |
9406 | } |
9407 | |
9408 | auto Cand1Attrs = Cand1->specific_attrs<EnableIfAttr>(); |
9409 | auto Cand2Attrs = Cand2->specific_attrs<EnableIfAttr>(); |
9410 | |
9411 | llvm::FoldingSetNodeID Cand1ID, Cand2ID; |
9412 | for (auto Pair : zip_longest(Cand1Attrs, Cand2Attrs)) { |
9413 | Optional<EnableIfAttr *> Cand1A = std::get<0>(Pair); |
9414 | Optional<EnableIfAttr *> Cand2A = std::get<1>(Pair); |
9415 | |
9416 | |
9417 | |
9418 | if (!Cand1A) |
9419 | return Comparison::Worse; |
9420 | if (!Cand2A) |
9421 | return Comparison::Better; |
9422 | |
9423 | Cand1ID.clear(); |
9424 | Cand2ID.clear(); |
9425 | |
9426 | (*Cand1A)->getCond()->Profile(Cand1ID, S.getASTContext(), true); |
9427 | (*Cand2A)->getCond()->Profile(Cand2ID, S.getASTContext(), true); |
9428 | if (Cand1ID != Cand2ID) |
9429 | return Comparison::Worse; |
9430 | } |
9431 | |
9432 | return Comparison::Equal; |
9433 | } |
9434 | |
9435 | static Comparison |
9436 | isBetterMultiversionCandidate(const OverloadCandidate &Cand1, |
9437 | const OverloadCandidate &Cand2) { |
9438 | if (!Cand1.Function || !Cand1.Function->isMultiVersion() || !Cand2.Function || |
9439 | !Cand2.Function->isMultiVersion()) |
9440 | return Comparison::Equal; |
9441 | |
9442 | |
9443 | |
9444 | if (Cand1.Function->isInvalidDecl()) { |
9445 | if (Cand2.Function->isInvalidDecl()) |
9446 | return Comparison::Equal; |
9447 | return Comparison::Worse; |
9448 | } |
9449 | if (Cand2.Function->isInvalidDecl()) |
9450 | return Comparison::Better; |
9451 | |
9452 | |
9453 | |
9454 | bool Cand1CPUDisp = Cand1.Function->hasAttr<CPUDispatchAttr>(); |
9455 | bool Cand2CPUDisp = Cand2.Function->hasAttr<CPUDispatchAttr>(); |
9456 | const auto *Cand1CPUSpec = Cand1.Function->getAttr<CPUSpecificAttr>(); |
9457 | const auto *Cand2CPUSpec = Cand2.Function->getAttr<CPUSpecificAttr>(); |
9458 | |
9459 | if (!Cand1CPUDisp && !Cand2CPUDisp && !Cand1CPUSpec && !Cand2CPUSpec) |
9460 | return Comparison::Equal; |
9461 | |
9462 | if (Cand1CPUDisp && !Cand2CPUDisp) |
9463 | return Comparison::Better; |
9464 | if (Cand2CPUDisp && !Cand1CPUDisp) |
9465 | return Comparison::Worse; |
9466 | |
9467 | if (Cand1CPUSpec && Cand2CPUSpec) { |
9468 | if (Cand1CPUSpec->cpus_size() != Cand2CPUSpec->cpus_size()) |
9469 | return Cand1CPUSpec->cpus_size() < Cand2CPUSpec->cpus_size() |
9470 | ? Comparison::Better |
9471 | : Comparison::Worse; |
9472 | |
9473 | std::pair<CPUSpecificAttr::cpus_iterator, CPUSpecificAttr::cpus_iterator> |
9474 | FirstDiff = std::mismatch( |
9475 | Cand1CPUSpec->cpus_begin(), Cand1CPUSpec->cpus_end(), |
9476 | Cand2CPUSpec->cpus_begin(), |
9477 | [](const IdentifierInfo *LHS, const IdentifierInfo *RHS) { |
9478 | return LHS->getName() == RHS->getName(); |
9479 | }); |
9480 | |
9481 | assert(FirstDiff.first != Cand1CPUSpec->cpus_end() && |
9482 | "Two different cpu-specific versions should not have the same " |
9483 | "identifier list, otherwise they'd be the same decl!"); |
9484 | return (*FirstDiff.first)->getName() < (*FirstDiff.second)->getName() |
9485 | ? Comparison::Better |
9486 | : Comparison::Worse; |
9487 | } |
9488 | llvm_unreachable("No way to get here unless both had cpu_dispatch"); |
9489 | } |
9490 | |
9491 | |
9492 | |
9493 | |
9494 | static Optional<QualType> getImplicitObjectParamType(ASTContext &Context, |
9495 | const FunctionDecl *F) { |
9496 | if (!isa<CXXMethodDecl>(F) || isa<CXXConstructorDecl>(F)) |
9497 | return llvm::None; |
9498 | |
9499 | auto *M = cast<CXXMethodDecl>(F); |
9500 | |
9501 | if (M->isStatic()) |
9502 | return QualType(); |
9503 | |
9504 | QualType T = M->getThisObjectType(); |
9505 | if (M->getRefQualifier() == RQ_RValue) |
9506 | return Context.getRValueReferenceType(T); |
9507 | return Context.getLValueReferenceType(T); |
9508 | } |
9509 | |
9510 | static bool haveSameParameterTypes(ASTContext &Context, const FunctionDecl *F1, |
9511 | const FunctionDecl *F2, unsigned NumParams) { |
9512 | if (declaresSameEntity(F1, F2)) |
9513 | return true; |
9514 | |
9515 | auto NextParam = [&](const FunctionDecl *F, unsigned &I, bool First) { |
9516 | if (First) { |
9517 | if (Optional<QualType> T = getImplicitObjectParamType(Context, F)) |
9518 | return *T; |
9519 | } |
9520 | assert(I < F->getNumParams()); |
9521 | return F->getParamDecl(I++)->getType(); |
9522 | }; |
9523 | |
9524 | unsigned I1 = 0, I2 = 0; |
9525 | for (unsigned I = 0; I != NumParams; ++I) { |
9526 | QualType T1 = NextParam(F1, I1, I == 0); |
9527 | QualType T2 = NextParam(F2, I2, I == 0); |
9528 | if (!T1.isNull() && !T1.isNull() && !Context.hasSameUnqualifiedType(T1, T2)) |
9529 | return false; |
9530 | } |
9531 | return true; |
9532 | } |
9533 | |
9534 | |
9535 | |
9536 | bool clang::isBetterOverloadCandidate( |
9537 | Sema &S, const OverloadCandidate &Cand1, const OverloadCandidate &Cand2, |
9538 | SourceLocation Loc, OverloadCandidateSet::CandidateSetKind Kind) { |
9539 | |
9540 | |
9541 | if (!Cand2.Viable) |
| 1 | Assuming field 'Viable' is true | |
|
| |
9542 | return Cand1.Viable; |
9543 | else if (!Cand1.Viable) |
| 3 | | Assuming field 'Viable' is true | |
|
| |
9544 | return false; |
9545 | |
9546 | |
9547 | |
9548 | |
9549 | |
9550 | |
9551 | |
9552 | |
9553 | |
9554 | |
9555 | |
9556 | |
9557 | |
9558 | |
9559 | |
9560 | |
9561 | |
9562 | |
9563 | |
9564 | |
9565 | |
9566 | |
9567 | |
9568 | |
9569 | |
9570 | |
9571 | |
9572 | |
9573 | |
9574 | |
9575 | |
9576 | |
9577 | |
9578 | |
9579 | |
9580 | if (S.getLangOpts().CUDA && Cand1.Function && Cand2.Function && |
| 5 | | Assuming field 'CUDA' is 0 | |
|
9581 | S.getLangOpts().GPUExcludeWrongSideOverloads) { |
9582 | if (FunctionDecl *Caller = dyn_cast<FunctionDecl>(S.CurContext)) { |
9583 | bool IsCallerImplicitHD = Sema::isCUDAImplicitHostDeviceFunction(Caller); |
9584 | bool IsCand1ImplicitHD = |
9585 | Sema::isCUDAImplicitHostDeviceFunction(Cand1.Function); |
9586 | bool IsCand2ImplicitHD = |
9587 | Sema::isCUDAImplicitHostDeviceFunction(Cand2.Function); |
9588 | auto P1 = S.IdentifyCUDAPreference(Caller, Cand1.Function); |
9589 | auto P2 = S.IdentifyCUDAPreference(Caller, Cand2.Function); |
9590 | assert(P1 != Sema::CFP_Never && P2 != Sema::CFP_Never); |
9591 | |
9592 | |
9593 | |
9594 | |
9595 | |
9596 | |
9597 | |
9598 | |
9599 | |
9600 | |
9601 | auto EmitThreshold = |
9602 | (S.getLangOpts().CUDAIsDevice && IsCallerImplicitHD && |
9603 | (IsCand1ImplicitHD || IsCand2ImplicitHD)) |
9604 | ? Sema::CFP_Never |
9605 | : Sema::CFP_WrongSide; |
9606 | auto Cand1Emittable = P1 > EmitThreshold; |
9607 | auto Cand2Emittable = P2 > EmitThreshold; |
9608 | if (Cand1Emittable && !Cand2Emittable) |
9609 | return true; |
9610 | if (!Cand1Emittable && Cand2Emittable) |
9611 | return false; |
9612 | } |
9613 | } |
9614 | |
9615 | |
9616 | |
9617 | |
9618 | |
9619 | |
9620 | |
9621 | unsigned StartArg = 0; |
9622 | if (Cand1.IgnoreObjectArgument || Cand2.IgnoreObjectArgument) |
| 6 | | Assuming field 'IgnoreObjectArgument' is false | |
|
| 7 | | Assuming field 'IgnoreObjectArgument' is false | |
|
| |
9623 | StartArg = 1; |
9624 | |
9625 | auto IsIllFormedConversion = [&](const ImplicitConversionSequence &ICS) { |
9626 | |
9627 | if (!S.getLangOpts().CPlusPlus) |
9628 | return ICS.isStandard() && |
9629 | ICS.Standard.Second == ICK_Incompatible_Pointer_Conversion; |
9630 | |
9631 | |
9632 | |
9633 | return S.getLangOpts().CPlusPlus11 && !S.getLangOpts().WritableStrings && |
9634 | hasDeprecatedStringLiteralToCharPtrConversion(ICS); |
9635 | }; |
9636 | |
9637 | |
9638 | |
9639 | unsigned NumArgs = Cand1.Conversions.size(); |
9640 | assert(Cand2.Conversions.size() == NumArgs && "Overload candidate mismatch"); |
9641 | bool HasBetterConversion = false; |
9642 | for (unsigned ArgIdx = StartArg; ArgIdx < NumArgs; ++ArgIdx) { |
| 9 | | Assuming 'ArgIdx' is >= 'NumArgs' | |
|
| 10 | | Loop condition is false. Execution continues on line 9652 | |
|
9643 | bool Cand1Bad = IsIllFormedConversion(Cand1.Conversions[ArgIdx]); |
9644 | bool Cand2Bad = IsIllFormedConversion(Cand2.Conversions[ArgIdx]); |
9645 | if (Cand1Bad != Cand2Bad) { |
9646 | if (Cand1Bad) |
9647 | return false; |
9648 | HasBetterConversion = true; |
9649 | } |
9650 | } |
9651 | |
9652 | if (HasBetterConversion) |
| |
9653 | return true; |
9654 | |
9655 | |
9656 | |
9657 | |
9658 | |
9659 | bool HasWorseConversion = false; |
9660 | for (unsigned ArgIdx = StartArg; ArgIdx < NumArgs; ++ArgIdx) { |
| 12 | | Loop condition is false. Execution continues on line 9701 | |
|
9661 | switch (CompareImplicitConversionSequences(S, Loc, |
9662 | Cand1.Conversions[ArgIdx], |
9663 | Cand2.Conversions[ArgIdx])) { |
9664 | case ImplicitConversionSequence::Better: |
9665 | |
9666 | HasBetterConversion = true; |
9667 | break; |
9668 | |
9669 | case ImplicitConversionSequence::Worse: |
9670 | if (Cand1.Function && Cand2.Function && |
9671 | Cand1.isReversed() != Cand2.isReversed() && |
9672 | haveSameParameterTypes(S.Context, Cand1.Function, Cand2.Function, |
9673 | NumArgs)) { |
9674 | |
9675 | |
9676 | |
9677 | |
9678 | |
9679 | |
9680 | |
9681 | |
9682 | |
9683 | |
9684 | |
9685 | |
9686 | HasWorseConversion = true; |
9687 | break; |
9688 | } |
9689 | |
9690 | |
9691 | return false; |
9692 | |
9693 | case ImplicitConversionSequence::Indistinguishable: |
9694 | |
9695 | break; |
9696 | } |
9697 | } |
9698 | |
9699 | |
9700 | |
9701 | if (HasBetterConversion && !HasWorseConversion) |
9702 | return true; |
9703 | |
9704 | |
9705 | |
9706 | |
9707 | |
9708 | |
9709 | |
9710 | if (Kind == OverloadCandidateSet::CSK_InitByUserDefinedConversion && |
| 13 | | Assuming 'Kind' is not equal to CSK_InitByUserDefinedConversion | |
|
9711 | Cand1.Function && Cand2.Function && |
9712 | isa<CXXConversionDecl>(Cand1.Function) && |
9713 | isa<CXXConversionDecl>(Cand2.Function)) { |
9714 | |
9715 | |
9716 | |
9717 | |
9718 | ImplicitConversionSequence::CompareKind Result = |
9719 | compareConversionFunctions(S, Cand1.Function, Cand2.Function); |
9720 | if (Result == ImplicitConversionSequence::Indistinguishable) |
9721 | Result = CompareStandardConversionSequences(S, Loc, |
9722 | Cand1.FinalConversion, |
9723 | Cand2.FinalConversion); |
9724 | |
9725 | if (Result != ImplicitConversionSequence::Indistinguishable) |
9726 | return Result == ImplicitConversionSequence::Better; |
9727 | |
9728 | |
9729 | |
9730 | |
9731 | } |
9732 | |
9733 | |
9734 | |
9735 | |
9736 | |
9737 | |
9738 | |
9739 | if (Kind == OverloadCandidateSet::CSK_InitByConstructor && NumArgs == 1 && |
| 14 | | Assuming 'Kind' is not equal to CSK_InitByConstructor | |
|
9740 | Cand1.Function && Cand2.Function && |
9741 | isa<CXXConstructorDecl>(Cand1.Function) != |
9742 | isa<CXXConstructorDecl>(Cand2.Function)) |
9743 | return isa<CXXConstructorDecl>(Cand1.Function); |
9744 | |
9745 | |
9746 | |
9747 | bool Cand1IsSpecialization = Cand1.Function && |
| 15 | | Assuming field 'Function' is null | |
|
9748 | Cand1.Function->getPrimaryTemplate(); |
9749 | bool Cand2IsSpecialization = Cand2.Function && |
| 16 | | Assuming field 'Function' is null | |
|
9750 | Cand2.Function->getPrimaryTemplate(); |
9751 | if (Cand1IsSpecialization != Cand2IsSpecialization) |
| |
9752 | return Cand2IsSpecialization; |
9753 | |
9754 | |
9755 | |
9756 | |
9757 | |
9758 | if (Cand1IsSpecialization && Cand2IsSpecialization) { |
9759 | if (FunctionTemplateDecl *BetterTemplate = S.getMoreSpecializedTemplate( |
9760 | Cand1.Function->getPrimaryTemplate(), |
9761 | Cand2.Function->getPrimaryTemplate(), Loc, |
9762 | isa<CXXConversionDecl>(Cand1.Function) ? TPOC_Conversion |
9763 | : TPOC_Call, |
9764 | Cand1.ExplicitCallArguments, Cand2.ExplicitCallArguments, |
9765 | Cand1.isReversed() ^ Cand2.isReversed())) |
9766 | return BetterTemplate == Cand1.Function->getPrimaryTemplate(); |
9767 | } |
9768 | |
9769 | |
9770 | |
9771 | if (Cand1.Function && Cand2.Function && !Cand1IsSpecialization && |
9772 | !Cand2IsSpecialization && Cand1.Function->hasPrototype() && |
9773 | Cand2.Function->hasPrototype()) { |
9774 | auto *PT1 = cast<FunctionProtoType>(Cand1.Function->getFunctionType()); |
9775 | auto *PT2 = cast<FunctionProtoType>(Cand2.Function->getFunctionType()); |
9776 | if (PT1->getNumParams() == PT2->getNumParams() && |
9777 | PT1->isVariadic() == PT2->isVariadic() && |
9778 | S.FunctionParamTypesAreEqual(PT1, PT2)) { |
9779 | Expr *RC1 = Cand1.Function->getTrailingRequiresClause(); |
9780 | Expr *RC2 = Cand2.Function->getTrailingRequiresClause(); |
9781 | if (RC1 && RC2) { |
9782 | bool AtLeastAsConstrained1, AtLeastAsConstrained2; |
9783 | if (S.IsAtLeastAsConstrained(Cand1.Function, {RC1}, Cand2.Function, |
9784 | {RC2}, AtLeastAsConstrained1) || |
9785 | S.IsAtLeastAsConstrained(Cand2.Function, {RC2}, Cand1.Function, |
9786 | {RC1}, AtLeastAsConstrained2)) |
9787 | return false; |
9788 | if (AtLeastAsConstrained1 != AtLeastAsConstrained2) |
9789 | return AtLeastAsConstrained1; |
9790 | } else if (RC1 || RC2) { |
9791 | return RC1 != nullptr; |
9792 | } |
9793 | } |
9794 | } |
9795 | |
9796 | |
9797 | |
9798 | |
9799 | |
9800 | bool Cand1IsInherited = |
9801 | dyn_cast_or_null<ConstructorUsingShadowDecl>(Cand1.FoundDecl.getDecl()); |
| 18 | | Assuming the object is a 'ConstructorUsingShadowDecl' | |
|
9802 | bool Cand2IsInherited = |
9803 | dyn_cast_or_null<ConstructorUsingShadowDecl>(Cand2.FoundDecl.getDecl()); |
| 19 | | Assuming the object is a 'ConstructorUsingShadowDecl' | |
|
9804 | if (Cand1IsInherited != Cand2IsInherited) |
| 20 | | Assuming 'Cand1IsInherited' is equal to 'Cand2IsInherited' | |
|
| |
9805 | return Cand2IsInherited; |
9806 | else if (Cand1IsInherited) { |
| 22 | | Assuming 'Cand1IsInherited' is true | |
|
| |
9807 | assert(Cand2IsInherited); |
9808 | auto *Cand1Class = cast<CXXRecordDecl>(Cand1.Function->getDeclContext()); |
| 24 | | Called C++ object pointer is null |
|
9809 | auto *Cand2Class = cast<CXXRecordDecl>(Cand2.Function->getDeclContext()); |
9810 | if (Cand1Class->isDerivedFrom(Cand2Class)) |
9811 | return true; |
9812 | if (Cand2Class->isDerivedFrom(Cand1Class)) |
9813 | return false; |
9814 | |
9815 | } |
9816 | |
9817 | |
9818 | |
9819 | |
9820 | |
9821 | |
9822 | |
9823 | |
9824 | if (Cand1.RewriteKind != Cand2.RewriteKind) |
9825 | return Cand1.RewriteKind < Cand2.RewriteKind; |
9826 | |
9827 | |
9828 | { |
9829 | auto *Guide1 = dyn_cast_or_null<CXXDeductionGuideDecl>(Cand1.Function); |
9830 | auto *Guide2 = dyn_cast_or_null<CXXDeductionGuideDecl>(Cand2.Function); |
9831 | if (Guide1 && Guide2) { |
9832 | |
9833 | if (Guide1->isImplicit() != Guide2->isImplicit()) |
9834 | return Guide2->isImplicit(); |
9835 | |
9836 | |
9837 | if (Guide1->isCopyDeductionCandidate()) |
9838 | return true; |
9839 | } |
9840 | } |
9841 | |
9842 | |
9843 | if (Cand1.Function && Cand2.Function) { |
9844 | Comparison Cmp = compareEnableIfAttrs(S, Cand1.Function, Cand2.Function); |
9845 | if (Cmp != Comparison::Equal) |
9846 | return Cmp == Comparison::Better; |
9847 | } |
9848 | |
9849 | bool HasPS1 = Cand1.Function != nullptr && |
9850 | functionHasPassObjectSizeParams(Cand1.Function); |
9851 | bool HasPS2 = Cand2.Function != nullptr && |
9852 | functionHasPassObjectSizeParams(Cand2.Function); |
9853 | if (HasPS1 != HasPS2 && HasPS1) |
9854 | return true; |
9855 | |
9856 | auto MV = isBetterMultiversionCandidate(Cand1, Cand2); |
9857 | if (MV == Comparison::Better) |
9858 | return true; |
9859 | if (MV == Comparison::Worse) |
9860 | return false; |
9861 | |
9862 | |
9863 | |
9864 | if (S.getLangOpts().CUDA && Cand1.Function && Cand2.Function) { |
9865 | FunctionDecl *Caller = dyn_cast<FunctionDecl>(S.CurContext); |
9866 | return S.IdentifyCUDAPreference(Caller, Cand1.Function) > |
9867 | S.IdentifyCUDAPreference(Caller, Cand2.Function); |
9868 | } |
9869 | |
9870 | |
9871 | |
9872 | |
9873 | |
9874 | const auto *CD1 = dyn_cast_or_null<CXXConstructorDecl>(Cand1.Function); |
9875 | const auto *CD2 = dyn_cast_or_null<CXXConstructorDecl>(Cand2.Function); |
9876 | if (CD1 && CD2) { |
9877 | LangAS AS1 = CD1->getMethodQualifiers().getAddressSpace(); |
9878 | LangAS AS2 = CD2->getMethodQualifiers().getAddressSpace(); |
9879 | if (AS1 != AS2) { |
9880 | if (Qualifiers::isAddressSpaceSupersetOf(AS2, AS1)) |
9881 | return true; |
9882 | if (Qualifiers::isAddressSpaceSupersetOf(AS2, AS1)) |
9883 | return false; |
9884 | } |
9885 | } |
9886 | |
9887 | return false; |
9888 | } |
9889 | |
9890 | |
9891 | |
9892 | |
9893 | |
9894 | |
9895 | |
9896 | |
9897 | bool Sema::isEquivalentInternalLinkageDeclaration(const NamedDecl *A, |
9898 | const NamedDecl *B) { |
9899 | auto *VA = dyn_cast_or_null<ValueDecl>(A); |
9900 | auto *VB = dyn_cast_or_null<ValueDecl>(B); |
9901 | if (!VA || !VB) |
9902 | return false; |
9903 | |
9904 | |
9905 | |
9906 | if (!VA->getDeclContext()->getRedeclContext()->Equals( |
9907 | VB->getDeclContext()->getRedeclContext()) || |
9908 | getOwningModule(VA) == getOwningModule(VB) || |
9909 | VA->isExternallyVisible() || VB->isExternallyVisible()) |
9910 | return false; |
9911 | |
9912 | |
9913 | |
9914 | |
9915 | |
9916 | |
9917 | if (Context.hasSameType(VA->getType(), VB->getType())) |
9918 | return true; |
9919 | |
9920 | |
9921 | |
9922 | if (auto *EA = dyn_cast<EnumConstantDecl>(VA)) { |
9923 | if (auto *EB = dyn_cast<EnumConstantDecl>(VB)) { |
9924 | |
9925 | |
9926 | auto *EnumA = cast<EnumDecl>(EA->getDeclContext()); |
9927 | auto *EnumB = cast<EnumDecl>(EB->getDeclContext()); |
9928 | if (EnumA->hasNameForLinkage() || EnumB->hasNameForLinkage() || |
9929 | !Context.hasSameType(EnumA->getIntegerType(), |
9930 | EnumB->getIntegerType())) |
9931 | return false; |
9932 | |
9933 | return llvm::APSInt::isSameValue(EA->getInitVal(), EB->getInitVal()); |
9934 | } |
9935 | } |
9936 | |
9937 | |
9938 | return false; |
9939 | } |
9940 | |
9941 | void Sema::diagnoseEquivalentInternalLinkageDeclarations( |
9942 | SourceLocation Loc, const NamedDecl *D, ArrayRef<const NamedDecl *> Equiv) { |
9943 | assert(D && "Unknown declaration"); |
9944 | Diag(Loc, diag::ext_equivalent_internal_linkage_decl_in_modules) << D; |
9945 | |
9946 | Module *M = getOwningModule(D); |
9947 | Diag(D->getLocation(), diag::note_equivalent_internal_linkage_decl) |
9948 | << !M << (M ? M->getFullModuleName() : ""); |
9949 | |
9950 | for (auto *E : Equiv) { |
9951 | Module *M = getOwningModule(E); |
9952 | Diag(E->getLocation(), diag::note_equivalent_internal_linkage_decl) |
9953 | << !M << (M ? M->getFullModuleName() : ""); |
9954 | } |
9955 | } |
9956 | |
9957 | |
9958 | |
9959 | |
9960 | |
9961 | |
9962 | |
9963 | |
9964 | |
9965 | |
9966 | |
9967 | OverloadingResult |
9968 | OverloadCandidateSet::BestViableFunction(Sema &S, SourceLocation Loc, |
9969 | iterator &Best) { |
9970 | llvm::SmallVector<OverloadCandidate *, 16> Candidates; |
9971 | std::transform(begin(), end(), std::back_inserter(Candidates), |
9972 | [](OverloadCandidate &Cand) { return &Cand; }); |
9973 | |
9974 | |
9975 | |
9976 | |
9977 | |
9978 | |
9979 | |
9980 | |
9981 | |
9982 | |
9983 | |
9984 | |
9985 | if (S.getLangOpts().CUDA && !S.getLangOpts().GPUExcludeWrongSideOverloads) { |
9986 | const FunctionDecl *Caller = dyn_cast<FunctionDecl>(S.CurContext); |
9987 | bool ContainsSameSideCandidate = |
9988 | llvm::any_of(Candidates, [&](OverloadCandidate *Cand) { |
9989 | |
9990 | return Cand->Viable && Cand->Function && |
9991 | S.IdentifyCUDAPreference(Caller, Cand->Function) == |
9992 | Sema::CFP_SameSide; |
9993 | }); |
9994 | if (ContainsSameSideCandidate) { |
9995 | auto IsWrongSideCandidate = [&](OverloadCandidate *Cand) { |
9996 | |
9997 | return Cand->Viable && Cand->Function && |
9998 | S.IdentifyCUDAPreference(Caller, Cand->Function) == |
9999 | Sema::CFP_WrongSide; |
10000 | }; |
10001 | llvm::erase_if(Candidates, IsWrongSideCandidate); |
10002 | } |
10003 | } |
10004 | |
10005 | |
10006 | Best = end(); |
10007 | for (auto *Cand : Candidates) { |
10008 | Cand->Best = false; |
10009 | if (Cand->Viable) |
10010 | if (Best == end() || |
10011 | isBetterOverloadCandidate(S, *Cand, *Best, Loc, Kind)) |
10012 | Best = Cand; |
10013 | } |
10014 | |
10015 | |
10016 | if (Best == end()) |
10017 | return OR_No_Viable_Function; |
10018 | |
10019 | llvm::SmallVector<const NamedDecl *, 4> EquivalentCands; |
10020 | |
10021 | llvm::SmallVector<OverloadCandidate*, 4> PendingBest; |
10022 | PendingBest.push_back(&*Best); |
10023 | Best->Best = true; |
10024 | |
10025 | |
10026 | |
10027 | while (!PendingBest.empty()) { |
10028 | auto *Curr = PendingBest.pop_back_val(); |
10029 | for (auto *Cand : Candidates) { |
10030 | if (Cand->Viable && !Cand->Best && |
10031 | !isBetterOverloadCandidate(S, *Curr, *Cand, Loc, Kind)) { |
10032 | PendingBest.push_back(Cand); |
10033 | Cand->Best = true; |
10034 | |
10035 | if (S.isEquivalentInternalLinkageDeclaration(Cand->Function, |
10036 | Curr->Function)) |
10037 | EquivalentCands.push_back(Cand->Function); |
10038 | else |
10039 | Best = end(); |
10040 | } |
10041 | } |
10042 | } |
10043 | |
10044 | |
10045 | if (Best == end()) |
10046 | return OR_Ambiguous; |
10047 | |
10048 | |
10049 | if (Best->Function && Best->Function->isDeleted()) |
10050 | return OR_Deleted; |
10051 | |
10052 | if (!EquivalentCands.empty()) |
10053 | S.diagnoseEquivalentInternalLinkageDeclarations(Loc, Best->Function, |
10054 | EquivalentCands); |
10055 | |
10056 | return OR_Success; |
10057 | } |
10058 | |
10059 | namespace { |
10060 | |
10061 | enum OverloadCandidateKind { |
10062 | oc_function, |
10063 | oc_method, |
10064 | oc_reversed_binary_operator, |
10065 | oc_constructor, |
10066 | oc_implicit_default_constructor, |
10067 | oc_implicit_copy_constructor, |
10068 | oc_implicit_move_constructor, |
10069 | oc_implicit_copy_assignment, |
10070 | oc_implicit_move_assignment, |
10071 | oc_implicit_equality_comparison, |
10072 | oc_inherited_constructor |
10073 | }; |
10074 | |
10075 | enum OverloadCandidateSelect { |
10076 | ocs_non_template, |
10077 | ocs_template, |
10078 | ocs_described_template, |
10079 | }; |
10080 | |
10081 | static std::pair<OverloadCandidateKind, OverloadCandidateSelect> |
10082 | ClassifyOverloadCandidate(Sema &S, NamedDecl *Found, FunctionDecl *Fn, |
10083 | OverloadCandidateRewriteKind CRK, |
10084 | std::string &Description) { |
10085 | |
10086 | bool isTemplate = Fn->isTemplateDecl() || Found->isTemplateDecl(); |
10087 | if (FunctionTemplateDecl *FunTmpl = Fn->getPrimaryTemplate()) { |
10088 | isTemplate = true; |
10089 | Description = S.getTemplateArgumentBindingsText( |
10090 | FunTmpl->getTemplateParameters(), *Fn->getTemplateSpecializationArgs()); |
10091 | } |
10092 | |
10093 | OverloadCandidateSelect Select = [&]() { |
10094 | if (!Description.empty()) |
10095 | return ocs_described_template; |
10096 | return isTemplate ? ocs_template : ocs_non_template; |
10097 | }(); |
10098 | |
10099 | OverloadCandidateKind Kind = [&]() { |
10100 | if (Fn->isImplicit() && Fn->getOverloadedOperator() == OO_EqualEqual) |
10101 | return oc_implicit_equality_comparison; |
10102 | |
10103 | if (CRK & CRK_Reversed) |
10104 | return oc_reversed_binary_operator; |
10105 | |
10106 | if (CXXConstructorDecl *Ctor = dyn_cast<CXXConstructorDecl>(Fn)) { |
10107 | if (!Ctor->isImplicit()) { |
10108 | if (isa<ConstructorUsingShadowDecl>(Found)) |
10109 | return oc_inherited_constructor; |
10110 | else |
10111 | return oc_constructor; |
10112 | } |
10113 | |
10114 | if (Ctor->isDefaultConstructor()) |
10115 | return oc_implicit_default_constructor; |
10116 | |
10117 | if (Ctor->isMoveConstructor()) |
10118 | return oc_implicit_move_constructor; |
10119 | |
10120 | assert(Ctor->isCopyConstructor() && |
10121 | "unexpected sort of implicit constructor"); |
10122 | return oc_implicit_copy_constructor; |
10123 | } |
10124 | |
10125 | if (CXXMethodDecl *Meth = dyn_cast<CXXMethodDecl>(Fn)) { |
10126 | |
10127 | |
10128 | if (!Meth->isImplicit()) |
10129 | return oc_method; |
10130 | |
10131 | if (Meth->isMoveAssignmentOperator()) |
10132 | return oc_implicit_move_assignment; |
10133 | |
10134 | if (Meth->isCopyAssignmentOperator()) |
10135 | return oc_implicit_copy_assignment; |
10136 | |
10137 | assert(isa<CXXConversionDecl>(Meth) && "expected conversion"); |
10138 | return oc_method; |
10139 | } |
10140 | |
10141 | return oc_function; |
10142 | }(); |
10143 | |
10144 | return std::make_pair(Kind, Select); |
10145 | } |
10146 | |
10147 | void MaybeEmitInheritedConstructorNote(Sema &S, Decl *FoundDecl) { |
10148 | |
10149 | |
10150 | if (auto *Shadow = dyn_cast<ConstructorUsingShadowDecl>(FoundDecl)) |
10151 | S.Diag(FoundDecl->getLocation(), |
10152 | diag::note_ovl_candidate_inherited_constructor) |
10153 | << Shadow->getNominatedBaseClass(); |
10154 | } |
10155 | |
10156 | } |
10157 | |
10158 | static bool isFunctionAlwaysEnabled(const ASTContext &Ctx, |
10159 | const FunctionDecl *FD) { |
10160 | for (auto *EnableIf : FD->specific_attrs<EnableIfAttr>()) { |
10161 | bool AlwaysTrue; |
10162 | if (EnableIf->getCond()->isValueDependent() || |
10163 | !EnableIf->getCond()->EvaluateAsBooleanCondition(AlwaysTrue, Ctx)) |
10164 | return false; |
10165 | if (!AlwaysTrue) |
10166 | return false; |
10167 | } |
10168 | return true; |
10169 | } |
10170 | |
10171 | |
10172 | |
10173 | |
10174 | |
10175 | |
10176 | |
10177 | |
10178 | static bool checkAddressOfFunctionIsAvailable(Sema &S, const FunctionDecl *FD, |
10179 | bool Complain, |
10180 | bool InOverloadResolution, |
10181 | SourceLocation Loc) { |
10182 | if (!isFunctionAlwaysEnabled(S.Context, FD)) { |
10183 | if (Complain) { |
10184 | if (InOverloadResolution) |
10185 | S.Diag(FD->getBeginLoc(), |
10186 | diag::note_addrof_ovl_candidate_disabled_by_enable_if_attr); |
10187 | else |
10188 | S.Diag(Loc, diag::err_addrof_function_disabled_by_enable_if_attr) << FD; |
10189 | } |
10190 | return false; |
10191 | } |
10192 | |
10193 | if (FD->getTrailingRequiresClause()) { |
10194 | ConstraintSatisfaction Satisfaction; |
10195 | if (S.CheckFunctionConstraints(FD, Satisfaction, Loc)) |
10196 | return false; |
10197 | if (!Satisfaction.IsSatisfied) { |
10198 | if (Complain) { |
10199 | if (InOverloadResolution) |
10200 | S.Diag(FD->getBeginLoc(), |
10201 | diag::note_ovl_candidate_unsatisfied_constraints); |
10202 | else |
10203 | S.Diag(Loc, diag::err_addrof_function_constraints_not_satisfied) |
10204 | << FD; |
10205 | S.DiagnoseUnsatisfiedConstraint(Satisfaction); |
10206 | } |
10207 | return false; |
10208 | } |
10209 | } |
10210 | |
10211 | auto I = llvm::find_if(FD->parameters(), [](const ParmVarDecl *P) { |
10212 | return P->hasAttr<PassObjectSizeAttr>(); |
10213 | }); |
10214 | if (I == FD->param_end()) |
10215 | return true; |
10216 | |
10217 | if (Complain) { |
10218 | |
10219 | unsigned ParamNo = std::distance(FD->param_begin(), I) + 1; |
10220 | if (InOverloadResolution) |
10221 | S.Diag(FD->getLocation(), |
10222 | diag::note_ovl_candidate_has_pass_object_size_params) |
10223 | << ParamNo; |
10224 | else |
10225 | S.Diag(Loc, diag::err_address_of_function_with_pass_object_size_params) |
10226 | << FD << ParamNo; |
10227 | } |
10228 | return false; |
10229 | } |
10230 | |
10231 | static bool checkAddressOfCandidateIsAvailable(Sema &S, |
10232 | const FunctionDecl *FD) { |
10233 | return checkAddressOfFunctionIsAvailable(S, FD, true, |
10234 | true, |
10235 | SourceLocation()); |
10236 | } |
10237 | |
10238 | bool Sema::checkAddressOfFunctionIsAvailable(const FunctionDecl *Function, |
10239 | bool Complain, |
10240 | SourceLocation Loc) { |
10241 | return ::checkAddressOfFunctionIsAvailable(*this, Function, Complain, |
10242 | false, |
10243 | Loc); |
10244 | } |
10245 | |
10246 | |
10247 | |
10248 | static bool shouldSkipNotingLambdaConversionDecl(FunctionDecl *Fn) { |
10249 | const auto *ConvD = dyn_cast<CXXConversionDecl>(Fn); |
10250 | |
10251 | if (!ConvD) |
10252 | return false; |
10253 | const auto *RD = cast<CXXRecordDecl>(Fn->getParent()); |
10254 | if (!RD->isLambda()) |
10255 | return false; |
10256 | |
10257 | CXXMethodDecl *CallOp = RD->getLambdaCallOperator(); |
10258 | CallingConv CallOpCC = |
10259 | CallOp->getType()->castAs<FunctionType>()->getCallConv(); |
10260 | QualType ConvRTy = ConvD->getType()->castAs<FunctionType>()->getReturnType(); |
10261 | CallingConv ConvToCC = |
10262 | ConvRTy->getPointeeType()->castAs<FunctionType>()->getCallConv(); |
10263 | |
10264 | return ConvToCC != CallOpCC; |
10265 | } |
10266 | |
10267 | |
10268 | void Sema::NoteOverloadCandidate(NamedDecl *Found, FunctionDecl *Fn, |
10269 | OverloadCandidateRewriteKind RewriteKind, |
10270 | QualType DestType, bool TakingAddress) { |
10271 | if (TakingAddress && !checkAddressOfCandidateIsAvailable(*this, Fn)) |
10272 | return; |
10273 | if (Fn->isMultiVersion() && Fn->hasAttr<TargetAttr>() && |
10274 | !Fn->getAttr<TargetAttr>()->isDefaultVersion()) |
10275 | return; |
10276 | if (shouldSkipNotingLambdaConversionDecl(Fn)) |
10277 | return; |
10278 | |
10279 | std::string FnDesc; |
10280 | std::pair<OverloadCandidateKind, OverloadCandidateSelect> KSPair = |
10281 | ClassifyOverloadCandidate(*this, Found, Fn, RewriteKind, FnDesc); |
10282 | PartialDiagnostic PD = PDiag(diag::note_ovl_candidate) |
10283 | << (unsigned)KSPair.first << (unsigned)KSPair.second |
10284 | << Fn << FnDesc; |
10285 | |
10286 | HandleFunctionTypeMismatch(PD, Fn->getType(), DestType); |
10287 | Diag(Fn->getLocation(), PD); |
10288 | MaybeEmitInheritedConstructorNote(*this, Found); |
10289 | } |
10290 | |
10291 | static void |
10292 | MaybeDiagnoseAmbiguousConstraints(Sema &S, ArrayRef<OverloadCandidate> Cands) { |
10293 | |
10294 | |
10295 | |
10296 | |
10297 | |
10298 | |
10299 | |
10300 | |
10301 | |
10302 | |
10303 | |
10304 | |
10305 | SmallVector<const Expr *, 3> FirstAC, SecondAC; |
10306 | FunctionDecl *FirstCand = nullptr, *SecondCand = nullptr; |
10307 | for (auto I = Cands.begin(), E = Cands.end(); I != E; ++I) { |
10308 | if (!I->Function) |
10309 | continue; |
10310 | SmallVector<const Expr *, 3> AC; |
10311 | if (auto *Template = I->Function->getPrimaryTemplate()) |
10312 | Template->getAssociatedConstraints(AC); |
10313 | else |
10314 | I->Function->getAssociatedConstraints(AC); |
10315 | if (AC.empty()) |
10316 | continue; |
10317 | if (FirstCand == nullptr) { |
10318 | FirstCand = I->Function; |
10319 | FirstAC = AC; |
10320 | } else if (SecondCand == nullptr) { |
10321 | SecondCand = I->Function; |
10322 | SecondAC = AC; |
10323 | } else { |
10324 | |
10325 | |
10326 | return; |
10327 | } |
10328 | } |
10329 | if (!SecondCand) |
10330 | return; |
10331 | |
10332 | |
10333 | if (S.MaybeEmitAmbiguousAtomicConstraintsDiagnostic(FirstCand, FirstAC, |
10334 | SecondCand, SecondAC)) |
10335 | |
10336 | |
10337 | return; |
10338 | } |
10339 | |
10340 | |
10341 | |
10342 | void Sema::NoteAllOverloadCandidates(Expr *OverloadedExpr, QualType DestType, |
10343 | bool TakingAddress) { |
10344 | assert(OverloadedExpr->getType() == Context.OverloadTy); |
10345 | |
10346 | OverloadExpr::FindResult Ovl = OverloadExpr::find(OverloadedExpr); |
10347 | OverloadExpr *OvlExpr = Ovl.Expression; |
10348 | |
10349 | for (UnresolvedSetIterator I = OvlExpr->decls_begin(), |
10350 | IEnd = OvlExpr->decls_end(); |
10351 | I != IEnd; ++I) { |
10352 | if (FunctionTemplateDecl *FunTmpl = |
10353 | dyn_cast<FunctionTemplateDecl>((*I)->getUnderlyingDecl()) ) { |
10354 | NoteOverloadCandidate(*I, FunTmpl->getTemplatedDecl(), CRK_None, DestType, |
10355 | TakingAddress); |
10356 | } else if (FunctionDecl *Fun |
10357 | = dyn_cast<FunctionDecl>((*I)->getUnderlyingDecl()) ) { |
10358 | NoteOverloadCandidate(*I, Fun, CRK_None, DestType, TakingAddress); |
10359 | } |
10360 | } |
10361 | } |
10362 | |
10363 | |
10364 | |
10365 | |
10366 | void ImplicitConversionSequence::DiagnoseAmbiguousConversion( |
10367 | Sema &S, |
10368 | SourceLocation CaretLoc, |
10369 | const PartialDiagnostic &PDiag) const { |
10370 | S.Diag(CaretLoc, PDiag) |
10371 | << Ambiguous.getFromType() << Ambiguous.getToType(); |
10372 | unsigned CandsShown = 0; |
10373 | AmbiguousConversionSequence::const_iterator I, E; |
10374 | for (I = Ambiguous.begin(), E = Ambiguous.end(); I != E; ++I) { |
10375 | if (CandsShown >= S.Diags.getNumOverloadCandidatesToShow()) |
10376 | break; |
10377 | ++CandsShown; |
10378 | S.NoteOverloadCandidate(I->first, I->second); |
10379 | } |
10380 | S.Diags.overloadCandidatesShown(CandsShown); |
10381 | if (I != E) |
10382 | S.Diag(SourceLocation(), diag::note_ovl_too_many_candidates) << int(E - I); |
10383 | } |
10384 | |
10385 | static void DiagnoseBadConversion(Sema &S, OverloadCandidate *Cand, |
10386 | unsigned I, bool TakingCandidateAddress) { |
10387 | const ImplicitConversionSequence &Conv = Cand->Conversions[I]; |
10388 | assert(Conv.isBad()); |
10389 | assert(Cand->Function && "for now, candidate must be a function"); |
10390 | FunctionDecl *Fn = Cand->Function; |
10391 | |
10392 | |
10393 | |
10394 | |
10395 | bool isObjectArgument = false; |
10396 | if (isa<CXXMethodDecl>(Fn) && !isa<CXXConstructorDecl>(Fn)) { |
10397 | if (I == 0) |
10398 | isObjectArgument = true; |
10399 | else |
10400 | I--; |
10401 | } |
10402 | |
10403 | std::string FnDesc; |
10404 | std::pair<OverloadCandidateKind, OverloadCandidateSelect> FnKindPair = |
10405 | ClassifyOverloadCandidate(S, Cand->FoundDecl, Fn, Cand->getRewriteKind(), |
10406 | FnDesc); |
10407 | |
10408 | Expr *FromExpr = Conv.Bad.FromExpr; |
10409 | QualType FromTy = Conv.Bad.getFromType(); |
10410 | QualType ToTy = Conv.Bad.getToType(); |
10411 | |
10412 | if (FromTy == S.Context.OverloadTy) { |
10413 | assert(FromExpr && "overload set argument came from implicit argument?"); |
10414 | Expr *E = FromExpr->IgnoreParens(); |
10415 | if (isa<UnaryOperator>(E)) |
10416 | E = cast<UnaryOperator>(E)->getSubExpr()->IgnoreParens(); |
10417 | DeclarationName Name = cast<OverloadExpr>(E)->getName(); |
10418 | |
10419 | S.Diag(Fn->getLocation(), diag::note_ovl_candidate_bad_overload) |
10420 | << (unsigned)FnKindPair.first << (unsigned)FnKindPair.second << FnDesc |
10421 | << (FromExpr ? FromExpr->getSourceRange() : SourceRange()) << ToTy |
10422 | << Name << I + 1; |
10423 | MaybeEmitInheritedConstructorNote(S, Cand->FoundDecl); |
10424 | return; |
10425 | } |
10426 | |
10427 | |
10428 | |
10429 | CanQualType CFromTy = S.Context.getCanonicalType(FromTy); |
10430 | CanQualType CToTy = S.Context.getCanonicalType(ToTy); |
10431 | if (CanQual<ReferenceType> RT = CToTy->getAs<ReferenceType>()) |
10432 | CToTy = RT->getPointeeType(); |
10433 | else { |
10434 | |
10435 | if (CanQual<PointerType> FromPT = CFromTy->getAs<PointerType>()) |
10436 | if (CanQual<PointerType> ToPT = CToTy->getAs<PointerType>()) { |
10437 | CFromTy = FromPT->getPointeeType(); |
10438 | CToTy = ToPT->getPointeeType(); |
10439 | } |
10440 | } |
10441 | |
10442 | if (CToTy.getUnqualifiedType() == CFromTy.getUnqualifiedType() && |
10443 | !CToTy.isAtLeastAsQualifiedAs(CFromTy)) { |
10444 | Qualifiers FromQs = CFromTy.getQualifiers(); |
10445 | Qualifiers ToQs = CToTy.getQualifiers(); |
10446 | |
10447 | if (FromQs.getAddressSpace() != ToQs.getAddressSpace()) { |
10448 | if (isObjectArgument) |
10449 | S.Diag(Fn->getLocation(), diag::note_ovl_candidate_bad_addrspace_this) |
10450 | << (unsigned)FnKindPair.first << (unsigned)FnKindPair.second |
10451 | << FnDesc << (FromExpr ? FromExpr->getSourceRange() : SourceRange()) |
10452 | << FromQs.getAddressSpace() << ToQs.getAddressSpace(); |
10453 | else |
10454 | S.Diag(Fn->getLocation(), diag::note_ovl_candidate_bad_addrspace) |
10455 | << (unsigned)FnKindPair.first << (unsigned)FnKindPair.second |
10456 | << FnDesc << (FromExpr ? FromExpr->getSourceRange() : SourceRange()) |
10457 | << FromQs.getAddressSpace() << ToQs.getAddressSpace() |
10458 | << ToTy->isReferenceType() << I + 1; |
10459 | MaybeEmitInheritedConstructorNote(S, Cand->FoundDecl); |
10460 | return; |
10461 | } |
10462 | |
10463 | if (FromQs.getObjCLifetime() != ToQs.getObjCLifetime()) { |
10464 | S.Diag(Fn->getLocation(), diag::note_ovl_candidate_bad_ownership) |
10465 | << (unsigned)FnKindPair.first << (unsigned)FnKindPair.second << FnDesc |
10466 | << (FromExpr ? FromExpr->getSourceRange() : SourceRange()) << FromTy |
10467 | << FromQs.getObjCLifetime() << ToQs.getObjCLifetime() |
10468 | << (unsigned)isObjectArgument << I + 1; |
10469 | MaybeEmitInheritedConstructorNote(S, Cand->FoundDecl); |
10470 | return; |
10471 | } |
10472 | |
10473 | if (FromQs.getObjCGCAttr() != ToQs.getObjCGCAttr()) { |
10474 | S.Diag(Fn->getLocation(), diag::note_ovl_candidate_bad_gc) |
10475 | << (unsigned)FnKindPair.first << (unsigned)FnKindPair.second << FnDesc |
10476 | << (FromExpr ? FromExpr->getSourceRange() : SourceRange()) << FromTy |
10477 | << FromQs.getObjCGCAttr() << ToQs.getObjCGCAttr() |
10478 | << (unsigned)isObjectArgument << I + 1; |
10479 | MaybeEmitInheritedConstructorNote(S, Cand->FoundDecl); |
10480 | return; |
10481 | } |
10482 | |
10483 | if (FromQs.hasUnaligned() != ToQs.hasUnaligned()) { |
10484 | S.Diag(Fn->getLocation(), diag::note_ovl_candidate_bad_unaligned) |
10485 | << (unsigned)FnKindPair.first << (unsigned)FnKindPair.second << FnDesc |
10486 | << (FromExpr ? FromExpr->getSourceRange() : SourceRange()) << FromTy |
10487 | << FromQs.hasUnaligned() << I + 1; |
10488 | MaybeEmitInheritedConstructorNote(S, Cand->FoundDecl); |
10489 | return; |
10490 | } |
10491 | |
10492 | unsigned CVR = FromQs.getCVRQualifiers() & ~ToQs.getCVRQualifiers(); |
10493 | assert(CVR && "expected qualifiers mismatch"); |
10494 | |
10495 | if (isObjectArgument) { |
10496 | S.Diag(Fn->getLocation(), diag::note_ovl_candidate_bad_cvr_this) |
10497 | << (unsigned)FnKindPair.first << (unsigned)FnKindPair.second << FnDesc |
10498 | << (FromExpr ? FromExpr->getSourceRange() : SourceRange()) << FromTy |
10499 | << (CVR - 1); |
10500 | } else { |
10501 | S.Diag(Fn->getLocation(), diag::note_ovl_candidate_bad_cvr) |
10502 | << (unsigned)FnKindPair.first << (unsigned)FnKindPair.second << FnDesc |
10503 | << (FromExpr ? FromExpr->getSourceRange() : SourceRange()) << FromTy |
10504 | << (CVR - 1) << I + 1; |
10505 | } |
10506 | MaybeEmitInheritedConstructorNote(S, Cand->FoundDecl); |
10507 | return; |
10508 | } |
10509 | |
10510 | if (Conv.Bad.Kind == BadConversionSequence::lvalue_ref_to_rvalue || |
10511 | Conv.Bad.Kind == BadConversionSequence::rvalue_ref_to_lvalue) { |
10512 | S.Diag(Fn->getLocation(), diag::note_ovl_candidate_bad_value_category) |
10513 | << (unsigned)FnKindPair.first << (unsigned)FnKindPair.second << FnDesc |
10514 | << (unsigned)isObjectArgument << I + 1 |
10515 | << (Conv.Bad.Kind == BadConversionSequence::rvalue_ref_to_lvalue) |
10516 | << (FromExpr ? FromExpr->getSourceRange() : SourceRange()); |
10517 | MaybeEmitInheritedConstructorNote(S, Cand->FoundDecl); |
10518 | return; |
10519 | } |
10520 | |
10521 | |
10522 | |
10523 | if (FromExpr && isa<InitListExpr>(FromExpr)) { |
10524 | S.Diag(Fn->getLocation(), diag::note_ovl_candidate_bad_list_argument) |
10525 | << (unsigned)FnKindPair.first << (unsigned)FnKindPair.second << FnDesc |
10526 | << (FromExpr ? FromExpr->getSourceRange() : SourceRange()) << FromTy |
10527 | << ToTy << (unsigned)isObjectArgument << I + 1; |
10528 | MaybeEmitInheritedConstructorNote(S, Cand->FoundDecl); |
10529 | return; |
10530 | } |
10531 | |
10532 | |
10533 | |
10534 | |
10535 | QualType TempFromTy = FromTy.getNonReferenceType(); |
10536 | if (const PointerType *PTy = TempFromTy->getAs<PointerType>()) |
10537 | TempFromTy = PTy->getPointeeType(); |
10538 | if (TempFromTy->isIncompleteType()) { |
10539 | |
10540 | S.Diag(Fn->getLocation(), diag::note_ovl_candidate_bad_conv_incomplete) |
10541 | << (unsigned)FnKindPair.first << (unsigned)FnKindPair.second << FnDesc |
10542 | << (FromExpr ? FromExpr->getSourceRange() : SourceRange()) << FromTy |
10543 | << ToTy << (unsigned)isObjectArgument << I + 1 |
10544 | << (unsigned)(Cand->Fix.Kind); |
10545 | |
10546 | MaybeEmitInheritedConstructorNote(S, Cand->FoundDecl); |
10547 | return; |
10548 | } |
10549 | |
10550 | |
10551 | unsigned BaseToDerivedConversion = 0; |
10552 | if (const PointerType *FromPtrTy = FromTy->getAs<PointerType>()) { |
10553 | if (const PointerType *ToPtrTy = ToTy->getAs<PointerType>()) { |
10554 | if (ToPtrTy->getPointeeType().isAtLeastAsQualifiedAs( |
10555 | FromPtrTy->getPointeeType()) && |
10556 | !FromPtrTy->getPointeeType()->isIncompleteType() && |
10557 | !ToPtrTy->getPointeeType()->isIncompleteType() && |
10558 | S.IsDerivedFrom(SourceLocation(), ToPtrTy->getPointeeType(), |
10559 | FromPtrTy->getPointeeType())) |
10560 | BaseToDerivedConversion = 1; |
10561 | } |
10562 | } else if (const ObjCObjectPointerType *FromPtrTy |
10563 | = FromTy->getAs<ObjCObjectPointerType>()) { |
10564 | if (const ObjCObjectPointerType *ToPtrTy |
10565 | = ToTy->getAs<ObjCObjectPointerType>()) |
10566 | if (const ObjCInterfaceDecl *FromIface = FromPtrTy->getInterfaceDecl()) |
10567 | if (const ObjCInterfaceDecl *ToIface = ToPtrTy->getInterfaceDecl()) |
10568 | if (ToPtrTy->getPointeeType().isAtLeastAsQualifiedAs( |
10569 | FromPtrTy->getPointeeType()) && |
10570 | FromIface->isSuperClassOf(ToIface)) |
10571 | BaseToDerivedConversion = 2; |
10572 | } else if (const ReferenceType *ToRefTy = ToTy->getAs<ReferenceType>()) { |
10573 | if (ToRefTy->getPointeeType().isAtLeastAsQualifiedAs(FromTy) && |
10574 | !FromTy->isIncompleteType() && |
10575 | !ToRefTy->getPointeeType()->isIncompleteType() && |
10576 | S.IsDerivedFrom(SourceLocation(), ToRefTy->getPointeeType(), FromTy)) { |
10577 | BaseToDerivedConversion = 3; |
10578 | } |
10579 | } |
10580 | |
10581 | if (BaseToDerivedConversion) { |
10582 | S.Diag(Fn->getLocation(), diag::note_ovl_candidate_bad_base_to_derived_conv) |
10583 | << (unsigned)FnKindPair.first << (unsigned)FnKindPair.second << FnDesc |
10584 | << (FromExpr ? FromExpr->getSourceRange() : SourceRange()) |
10585 | << (BaseToDerivedConversion - 1) << FromTy << ToTy << I + 1; |
10586 | MaybeEmitInheritedConstructorNote(S, Cand->FoundDecl); |
10587 | return; |
10588 | } |
10589 | |
10590 | if (isa<ObjCObjectPointerType>(CFromTy) && |
10591 | isa<PointerType>(CToTy)) { |
10592 | Qualifiers FromQs = CFromTy.getQualifiers(); |
10593 | Qualifiers ToQs = CToTy.getQualifiers(); |
10594 | if (FromQs.getObjCLifetime() != ToQs.getObjCLifetime()) { |
10595 | S.Diag(Fn->getLocation(), diag::note_ovl_candidate_bad_arc_conv) |
10596 | << (unsigned)FnKindPair.first << (unsigned)FnKindPair.second |
10597 | << FnDesc << (FromExpr ? FromExpr->getSourceRange() : SourceRange()) |
10598 | << FromTy << ToTy << (unsigned)isObjectArgument << I + 1; |
10599 | MaybeEmitInheritedConstructorNote(S, Cand->FoundDecl); |
10600 | return; |
10601 | } |
10602 | } |
10603 | |
10604 | if (TakingCandidateAddress && |
10605 | !checkAddressOfCandidateIsAvailable(S, Cand->Function)) |
10606 | return; |
10607 | |
10608 | |
10609 | PartialDiagnostic FDiag = S.PDiag(diag::note_ovl_candidate_bad_conv); |
10610 | FDiag << (unsigned)FnKindPair.first << (unsigned)FnKindPair.second << FnDesc |
10611 | << (FromExpr ? FromExpr->getSourceRange() : SourceRange()) << FromTy |
10612 | << ToTy << (unsigned)isObjectArgument << I + 1 |
10613 | << (unsigned)(Cand->Fix.Kind); |
10614 | |
10615 | |
10616 | for (std::vector<FixItHint>::iterator HI = Cand->Fix.Hints.begin(), |
10617 | HE = Cand->Fix.Hints.end(); HI != HE; ++HI) |
10618 | FDiag << *HI; |
10619 | S.Diag(Fn->getLocation(), FDiag); |
10620 | |
10621 | MaybeEmitInheritedConstructorNote(S, Cand->FoundDecl); |
10622 | } |
10623 | |
10624 | |
10625 | |
10626 | |
10627 | static bool CheckArityMismatch(Sema &S, OverloadCandidate *Cand, |
10628 | unsigned NumArgs) { |
10629 | FunctionDecl *Fn = Cand->Function; |
10630 | unsigned MinParams = Fn->getMinRequiredArguments(); |
10631 | |
10632 | |
10633 | |
10634 | |
10635 | |
10636 | |
10637 | if (Fn->isInvalidDecl() && |
10638 | Fn->getDeclName().getNameKind() == DeclarationName::CXXOperatorName) |
10639 | return true; |
10640 | |
10641 | if (NumArgs < MinParams) { |
10642 | assert((Cand->FailureKind == ovl_fail_too_few_arguments) || |
10643 | (Cand->FailureKind == ovl_fail_bad_deduction && |
10644 | Cand->DeductionFailure.Result == Sema::TDK_TooFewArguments)); |
10645 | } else { |
10646 | assert((Cand->FailureKind == ovl_fail_too_many_arguments) || |
10647 | (Cand->FailureKind == ovl_fail_bad_deduction && |
10648 | Cand->DeductionFailure.Result == Sema::TDK_TooManyArguments)); |
10649 | } |
10650 | |
10651 | return false; |
10652 | } |
10653 | |
10654 | |
10655 | static void DiagnoseArityMismatch(Sema &S, NamedDecl *Found, Decl *D, |
10656 | unsigned NumFormalArgs) { |
10657 | assert(isa<FunctionDecl>(D) && |
10658 | "The templated declaration should at least be a function" |
10659 | " when diagnosing bad template argument deduction due to too many" |
10660 | " or too few arguments"); |
10661 | |
10662 | FunctionDecl *Fn = cast<FunctionDecl>(D); |
10663 | |
10664 | |
10665 | const auto *FnTy = Fn->getType()->castAs<FunctionProtoType>(); |
10666 | unsigned MinParams = Fn->getMinRequiredArguments(); |
10667 | |
10668 | |
10669 | unsigned mode, modeCount; |
10670 | if (NumFormalArgs < MinParams) { |
10671 | if (MinParams != FnTy->getNumParams() || FnTy->isVariadic() || |
10672 | FnTy->isTemplateVariadic()) |
10673 | mode = 0; |
10674 | else |
10675 | mode = 2; |
10676 | modeCount = MinParams; |
10677 | } else { |
10678 | if (MinParams != FnTy->getNumParams()) |
10679 | mode = 1; |
10680 | else |
10681 | mode = 2; |
10682 | modeCount = FnTy->getNumParams(); |
10683 | } |
10684 | |
10685 | std::string Description; |
10686 | std::pair<OverloadCandidateKind, OverloadCandidateSelect> FnKindPair = |
10687 | ClassifyOverloadCandidate(S, Found, Fn, CRK_None, Description); |
10688 | |
10689 | if (modeCount == 1 && Fn->getParamDecl(0)->getDeclName()) |
10690 | S.Diag(Fn->getLocation(), diag::note_ovl_candidate_arity_one) |
10691 | << (unsigned)FnKindPair.first << (unsigned)FnKindPair.second |
10692 | << Description << mode << Fn->getParamDecl(0) << NumFormalArgs; |
10693 | else |
10694 | S.Diag(Fn->getLocation(), diag::note_ovl_candidate_arity) |
10695 | << (unsigned)FnKindPair.first << (unsigned)FnKindPair.second |
10696 | << Description << mode << modeCount << NumFormalArgs; |
10697 | |
10698 | MaybeEmitInheritedConstructorNote(S, Found); |
10699 | } |
10700 | |
10701 | |
10702 | static void DiagnoseArityMismatch(Sema &S, OverloadCandidate *Cand, |
10703 | unsigned NumFormalArgs) { |
10704 | if (!CheckArityMismatch(S, Cand, NumFormalArgs)) |
10705 | DiagnoseArityMismatch(S, Cand->FoundDecl, Cand->Function, NumFormalArgs); |
10706 | } |
10707 | |
10708 | static TemplateDecl *getDescribedTemplate(Decl *Templated) { |
10709 | if (TemplateDecl *TD = Templated->getDescribedTemplate()) |
10710 | return TD; |
10711 | llvm_unreachable("Unsupported: Getting the described template declaration" |
10712 | " for bad deduction diagnosis"); |
10713 | } |
10714 | |
10715 | |
10716 | static void DiagnoseBadDeduction(Sema &S, NamedDecl *Found, Decl *Templated, |
10717 | DeductionFailureInfo &DeductionFailure, |
10718 | unsigned NumArgs, |
10719 | bool TakingCandidateAddress) { |
10720 | TemplateParameter Param = DeductionFailure.getTemplateParameter(); |
10721 | NamedDecl *ParamD; |
10722 | (ParamD = Param.dyn_cast<TemplateTypeParmDecl*>()) || |
10723 | (ParamD = Param.dyn_cast<NonTypeTemplateParmDecl*>()) || |
10724 | (ParamD = Param.dyn_cast<TemplateTemplateParmDecl*>()); |
10725 | switch (DeductionFailure.Result) { |
10726 | case Sema::TDK_Success: |
10727 | llvm_unreachable("TDK_success while diagnosing bad deduction"); |
10728 | |
10729 | case Sema::TDK_Incomplete: { |
10730 | assert(ParamD && "no parameter found for incomplete deduction result"); |
10731 | S.Diag(Templated->getLocation(), |
10732 | diag::note_ovl_candidate_incomplete_deduction) |
10733 | << ParamD->getDeclName(); |
10734 | MaybeEmitInheritedConstructorNote(S, Found); |
10735 | return; |
10736 | } |
10737 | |
10738 | case Sema::TDK_IncompletePack: { |
10739 | assert(ParamD && "no parameter found for incomplete deduction result"); |
10740 | S.Diag(Templated->getLocation(), |
10741 | diag::note_ovl_candidate_incomplete_deduction_pack) |
10742 | << ParamD->getDeclName() |
10743 | << (DeductionFailure.getFirstArg()->pack_size() + 1) |
10744 | << *DeductionFailure.getFirstArg(); |
10745 | MaybeEmitInheritedConstructorNote(S, Found); |
10746 | return; |
10747 | } |
10748 | |
10749 | case Sema::TDK_Underqualified: { |
10750 | assert(ParamD && "no parameter found for bad qualifiers deduction result"); |
10751 | TemplateTypeParmDecl *TParam = cast<TemplateTypeParmDecl>(ParamD); |
10752 | |
10753 | QualType Param = DeductionFailure.getFirstArg()->getAsType(); |
10754 | |
10755 | |
10756 | |
10757 | QualifierCollector Qs; |
10758 | Qs.strip(Param); |
10759 | QualType NonCanonParam = Qs.apply(S.Context, TParam->getTypeForDecl()); |
10760 | assert(S.Context.hasSameType(Param, NonCanonParam)); |
10761 | |
10762 | |
10763 | |
10764 | |
10765 | |
10766 | QualType Arg = DeductionFailure.getSecondArg()->getAsType(); |
10767 | |
10768 | S.Diag(Templated->getLocation(), diag::note_ovl_candidate_underqualified) |
10769 | << ParamD->getDeclName() << Arg << NonCanonParam; |
10770 | MaybeEmitInheritedConstructorNote(S, Found); |
10771 | return; |
10772 | } |
10773 | |
10774 | case Sema::TDK_Inconsistent: { |
10775 | assert(ParamD && "no parameter found for inconsistent deduction result"); |
10776 | int which = 0; |
10777 | if (isa<TemplateTypeParmDecl>(ParamD)) |
10778 | which = 0; |
10779 | else if (isa<NonTypeTemplateParmDecl>(ParamD)) { |
10780 | |
10781 | |
10782 | |
10783 | QualType T1 = |
10784 | DeductionFailure.getFirstArg()->getNonTypeTemplateArgumentType(); |
10785 | QualType T2 = |
10786 | DeductionFailure.getSecondArg()->getNonTypeTemplateArgumentType(); |
10787 | if (!T1.isNull() && !T2.isNull() && !S.Context.hasSameType(T1, T2)) { |
10788 | S.Diag(Templated->getLocation(), |
10789 | diag::note_ovl_candidate_inconsistent_deduction_types) |
10790 | << ParamD->getDeclName() << *DeductionFailure.getFirstArg() << T1 |
10791 | << *DeductionFailure.getSecondArg() << T2; |
10792 | MaybeEmitInheritedConstructorNote(S, Found); |
10793 | return; |
10794 | } |
10795 | |
10796 | which = 1; |
10797 | } else { |
10798 | which = 2; |
10799 | } |
10800 | |
10801 | |
10802 | |
10803 | |
10804 | if (DeductionFailure.getFirstArg()->getKind() == TemplateArgument::Pack && |
10805 | DeductionFailure.getSecondArg()->getKind() == TemplateArgument::Pack && |
10806 | DeductionFailure.getFirstArg()->pack_size() != |
10807 | DeductionFailure.getSecondArg()->pack_size()) { |
10808 | which = 3; |
10809 | } |
10810 | |
10811 | S.Diag(Templated->getLocation(), |
10812 | diag::note_ovl_candidate_inconsistent_deduction) |
10813 | << which << ParamD->getDeclName() << *DeductionFailure.getFirstArg() |
10814 | << *DeductionFailure.getSecondArg(); |
10815 | MaybeEmitInheritedConstructorNote(S, Found); |
10816 | return; |
10817 | } |
10818 | |
10819 | case Sema::TDK_InvalidExplicitArguments: |
10820 | assert(ParamD && "no parameter found for invalid explicit arguments"); |
10821 | if (ParamD->getDeclName()) |
10822 | S.Diag(Templated->getLocation(), |
10823 | diag::note_ovl_candidate_explicit_arg_mismatch_named) |
10824 | << ParamD->getDeclName(); |
10825 | else { |
10826 | int index = 0; |
10827 | if (TemplateTypeParmDecl *TTP = dyn_cast<TemplateTypeParmDecl>(ParamD)) |
10828 | index = TTP->getIndex(); |
10829 | else if (NonTypeTemplateParmDecl *NTTP |
10830 | = dyn_cast<NonTypeTemplateParmDecl>(ParamD)) |
10831 | index = NTTP->getIndex(); |
10832 | else |
10833 | index = cast<TemplateTemplateParmDecl>(ParamD)->getIndex(); |
10834 | S.Diag(Templated->getLocation(), |
10835 | diag::note_ovl_candidate_explicit_arg_mismatch_unnamed) |
10836 | << (index + 1); |
10837 | } |
10838 | MaybeEmitInheritedConstructorNote(S, Found); |
10839 | return; |
10840 | |
10841 | case Sema::TDK_ConstraintsNotSatisfied: { |
10842 | |
10843 | SmallString<128> TemplateArgString; |
10844 | TemplateArgumentList *Args = DeductionFailure.getTemplateArgumentList(); |
10845 | TemplateArgString = " "; |
10846 | TemplateArgString += S.getTemplateArgumentBindingsText( |
10847 | getDescribedTemplate(Templated)->getTemplateParameters(), *Args); |
10848 | if (TemplateArgString.size() == 1) |
10849 | TemplateArgString.clear(); |
10850 | S.Diag(Templated->getLocation(), |
10851 | diag::note_ovl_candidate_unsatisfied_constraints) |
10852 | << TemplateArgString; |
10853 | |
10854 | S.DiagnoseUnsatisfiedConstraint( |
10855 | static_cast<CNSInfo*>(DeductionFailure.Data)->Satisfaction); |
10856 | return; |
10857 | } |
10858 | case Sema::TDK_TooManyArguments: |
10859 | case Sema::TDK_TooFewArguments: |
10860 | DiagnoseArityMismatch(S, Found, Templated, NumArgs); |
10861 | return; |
10862 | |
10863 | case Sema::TDK_InstantiationDepth: |
10864 | S.Diag(Templated->getLocation(), |
10865 | diag::note_ovl_candidate_instantiation_depth); |
10866 | MaybeEmitInheritedConstructorNote(S, Found); |
10867 | return; |
10868 | |
10869 | case Sema::TDK_SubstitutionFailure: { |
10870 | |
10871 | SmallString<128> TemplateArgString; |
10872 | if (TemplateArgumentList *Args = |
10873 | DeductionFailure.getTemplateArgumentList()) { |
10874 | TemplateArgString = " "; |
10875 | TemplateArgString += S.getTemplateArgumentBindingsText( |
10876 | getDescribedTemplate(Templated)->getTemplateParameters(), *Args); |
10877 | if (TemplateArgString.size() == 1) |
10878 | TemplateArgString.clear(); |
10879 | } |
10880 | |
10881 | |
10882 | PartialDiagnosticAt *PDiag = DeductionFailure.getSFINAEDiagnostic(); |
10883 | if (PDiag && PDiag->second.getDiagID() == |
10884 | diag::err_typename_nested_not_found_enable_if) { |
10885 | |
10886 | |
10887 | S.Diag(PDiag->first, diag::note_ovl_candidate_disabled_by_enable_if) |
10888 | << "'enable_if'" << TemplateArgString; |
10889 | return; |
10890 | } |
10891 | |
10892 | |
10893 | if (PDiag && PDiag->second.getDiagID() == |
10894 | diag::err_typename_nested_not_found_requirement) { |
10895 | S.Diag(Templated->getLocation(), |
10896 | diag::note_ovl_candidate_disabled_by_requirement) |
10897 | << PDiag->second.getStringArg(0) << TemplateArgString; |
10898 | return; |
10899 | } |
10900 | |
10901 | |
10902 | |
10903 | |
10904 | SmallString<128> SFINAEArgString; |
10905 | SourceRange R; |
10906 | if (PDiag) { |
10907 | SFINAEArgString = ": "; |
10908 | R = SourceRange(PDiag->first, PDiag->first); |
10909 | PDiag->second.EmitToString(S.getDiagnostics(), SFINAEArgString); |
10910 | } |
10911 | |
10912 | S.Diag(Templated->getLocation(), |
10913 | diag::note_ovl_candidate_substitution_failure) |
10914 | << TemplateArgString << SFINAEArgString << R; |
10915 | MaybeEmitInheritedConstructorNote(S, Found); |
10916 | return; |
10917 | } |
10918 | |
10919 | case Sema::TDK_DeducedMismatch: |
10920 | case Sema::TDK_DeducedMismatchNested: { |
10921 | |
10922 | SmallString<128> TemplateArgString; |
10923 | if (TemplateArgumentList *Args = |
10924 | DeductionFailure.getTemplateArgumentList()) { |
10925 | TemplateArgString = " "; |
10926 | TemplateArgString += S.getTemplateArgumentBindingsText( |
10927 | getDescribedTemplate(Templated)->getTemplateParameters(), *Args); |
10928 | if (TemplateArgString.size() == 1) |
10929 | TemplateArgString.clear(); |
10930 | } |
10931 | |
10932 | S.Diag(Templated->getLocation(), diag::note_ovl_candidate_deduced_mismatch) |
10933 | << (*DeductionFailure.getCallArgIndex() + 1) |
10934 | << *DeductionFailure.getFirstArg() << *DeductionFailure.getSecondArg() |
10935 | << TemplateArgString |
10936 | << (DeductionFailure.Result == Sema::TDK_DeducedMismatchNested); |
10937 | break; |
10938 | } |
10939 | |
10940 | case Sema::TDK_NonDeducedMismatch: { |
10941 | |
10942 | TemplateArgument FirstTA = *DeductionFailure.getFirstArg(); |
10943 | TemplateArgument SecondTA = *DeductionFailure.getSecondArg(); |
10944 | if (FirstTA.getKind() == TemplateArgument::Template && |
10945 | SecondTA.getKind() == TemplateArgument::Template) { |
10946 | TemplateName FirstTN = FirstTA.getAsTemplate(); |
10947 | TemplateName SecondTN = SecondTA.getAsTemplate(); |
10948 | if (FirstTN.getKind() == TemplateName::Template && |
10949 | SecondTN.getKind() == TemplateName::Template) { |
10950 | if (FirstTN.getAsTemplateDecl()->getName() == |
10951 | SecondTN.getAsTemplateDecl()->getName()) { |
10952 | |
10953 | |
10954 | |
10955 | |
10956 | |
10957 | |
10958 | S.Diag(Templated->getLocation(), |
10959 | diag::note_ovl_candidate_non_deduced_mismatch_qualified) |
10960 | << FirstTN.getAsTemplateDecl() << SecondTN.getAsTemplateDecl(); |
10961 | return; |
10962 | } |
10963 | } |
10964 | } |
10965 | |
10966 | if (TakingCandidateAddress && isa<FunctionDecl>(Templated) && |
10967 | !checkAddressOfCandidateIsAvailable(S, cast<FunctionDecl>(Templated))) |
10968 | return; |
10969 | |
10970 | |
10971 | |
10972 | |
10973 | |
10974 | S.Diag(Templated->getLocation(), |
10975 | diag::note_ovl_candidate_non_deduced_mismatch) |
10976 | << FirstTA << SecondTA; |
10977 | return; |
10978 | } |
10979 | |
10980 | |
10981 | case Sema::TDK_MiscellaneousDeductionFailure: |
10982 | S.Diag(Templated->getLocation(), diag::note_ovl_candidate_bad_deduction); |
10983 | MaybeEmitInheritedConstructorNote(S, Found); |
10984 | return; |
10985 | case Sema::TDK_CUDATargetMismatch: |
10986 | S.Diag(Templated->getLocation(), |
10987 | diag::note_cuda_ovl_candidate_target_mismatch); |
10988 | return; |
10989 | } |
10990 | } |
10991 | |
10992 | |
10993 | static void DiagnoseBadDeduction(Sema &S, OverloadCandidate *Cand, |
10994 | unsigned NumArgs, |
10995 | bool TakingCandidateAddress) { |
10996 | unsigned TDK = Cand->DeductionFailure.Result; |
10997 | if (TDK == Sema::TDK_TooFewArguments || TDK == Sema::TDK_TooManyArguments) { |
10998 | if (CheckArityMismatch(S, Cand, NumArgs)) |
10999 | return; |
11000 | } |
11001 | DiagnoseBadDeduction(S, Cand->FoundDecl, Cand->Function, |
11002 | Cand->DeductionFailure, NumArgs, TakingCandidateAddress); |
11003 | } |
11004 | |
11005 | |
11006 | static void DiagnoseBadTarget(Sema &S, OverloadCandidate *Cand) { |
11007 | FunctionDecl *Caller = cast<FunctionDecl>(S.CurContext); |
11008 | FunctionDecl *Callee = Cand->Function; |
11009 | |
11010 | Sema::CUDAFunctionTarget CallerTarget = S.IdentifyCUDATarget(Caller), |
11011 | CalleeTarget = S.IdentifyCUDATarget(Callee); |
11012 | |
11013 | std::string FnDesc; |
11014 | std::pair<OverloadCandidateKind, OverloadCandidateSelect> FnKindPair = |
11015 | ClassifyOverloadCandidate(S, Cand->FoundDecl, Callee, |
11016 | Cand->getRewriteKind(), FnDesc); |
11017 | |
11018 | S.Diag(Callee->getLocation(), diag::note_ovl_candidate_bad_target) |
11019 | << (unsigned)FnKindPair.first << (unsigned)ocs_non_template |
11020 | << FnDesc |
11021 | << CalleeTarget << CallerTarget; |
11022 | |
11023 | |
11024 | |
11025 | CXXMethodDecl *Meth = dyn_cast<CXXMethodDecl>(Callee); |
11026 | if (Meth != nullptr && Meth->isImplicit()) { |
11027 | CXXRecordDecl *ParentClass = Meth->getParent(); |
11028 | Sema::CXXSpecialMember CSM; |
11029 | |
11030 | switch (FnKindPair.first) { |
11031 | default: |
11032 | return; |
11033 | case oc_implicit_default_constructor: |
11034 | CSM = Sema::CXXDefaultConstructor; |
11035 | break; |
11036 | case oc_implicit_copy_constructor: |
11037 | CSM = Sema::CXXCopyConstructor; |
11038 | break; |
11039 | case oc_implicit_move_constructor: |
11040 | CSM = Sema::CXXMoveConstructor; |
11041 | break; |
11042 | case oc_implicit_copy_assignment: |
11043 | CSM = Sema::CXXCopyAssignment; |
11044 | break; |
11045 | case oc_implicit_move_assignment: |
11046 | CSM = Sema::CXXMoveAssignment; |
11047 | break; |
11048 | }; |
11049 | |
11050 | bool ConstRHS = false; |
11051 | if (Meth->getNumParams()) { |
11052 | if (const ReferenceType *RT = |
11053 | Meth->getParamDecl(0)->getType()->getAs<ReferenceType>()) { |
11054 | ConstRHS = RT->getPointeeType().isConstQualified(); |
11055 | } |
11056 | } |
11057 | |
11058 | S.inferCUDATargetForImplicitSpecialMember(ParentClass, CSM, Meth, |
11059 | ConstRHS, |
11060 | true); |
11061 | } |
11062 | } |
11063 | |
11064 | static void DiagnoseFailedEnableIfAttr(Sema &S, OverloadCandidate *Cand) { |
11065 | FunctionDecl *Callee = Cand->Function; |
11066 | EnableIfAttr *Attr = static_cast<EnableIfAttr*>(Cand->DeductionFailure.Data); |
11067 | |
11068 | S.Diag(Callee->getLocation(), |
11069 | diag::note_ovl_candidate_disabled_by_function_cond_attr) |
11070 | << Attr->getCond()->getSourceRange() << Attr->getMessage(); |
11071 | } |
11072 | |
11073 | static void DiagnoseFailedExplicitSpec(Sema &S, OverloadCandidate *Cand) { |
11074 | ExplicitSpecifier ES = ExplicitSpecifier::getFromDecl(Cand->Function); |
11075 | assert(ES.isExplicit() && "not an explicit candidate"); |
11076 | |
11077 | unsigned Kind; |
11078 | switch (Cand->Function->getDeclKind()) { |
11079 | case Decl::Kind::CXXConstructor: |
11080 | Kind = 0; |
11081 | break; |
11082 | case Decl::Kind::CXXConversion: |
11083 | Kind = 1; |
11084 | break; |
11085 | case Decl::Kind::CXXDeductionGuide: |
11086 | Kind = Cand->Function->isImplicit() ? 0 : 2; |
11087 | break; |
11088 | default: |
11089 | llvm_unreachable("invalid Decl"); |
11090 | } |
11091 | |
11092 | |
11093 | |
11094 | |
11095 | |
11096 | FunctionDecl *First = Cand->Function->getFirstDecl(); |
11097 | if (FunctionDecl *Pattern = First->getTemplateInstantiationPattern()) |
11098 | First = Pattern->getFirstDecl(); |
11099 | |
11100 | S.Diag(First->getLocation(), |
11101 | diag::note_ovl_candidate_explicit) |
11102 | << Kind << (ES.getExpr() ? 1 : 0) |
11103 | << (ES.getExpr() ? ES.getExpr()->getSourceRange() : SourceRange()); |
11104 | } |
11105 | |
11106 | |
11107 | |
11108 | |
11109 | |
11110 | |
11111 | |
11112 | |
11113 | |
11114 | |
11115 | |
11116 | |
11117 | |
11118 | |
11119 | |
11120 | |
11121 | static void NoteFunctionCandidate(Sema &S, OverloadCandidate *Cand, |
11122 | unsigned NumArgs, |
11123 | bool TakingCandidateAddress, |
11124 | LangAS CtorDestAS = LangAS::Default) { |
11125 | FunctionDecl *Fn = Cand->Function; |
11126 | if (shouldSkipNotingLambdaConversionDecl(Fn)) |
11127 | return; |
11128 | |
11129 | |
11130 | if (Cand->Viable) { |
11131 | if (Fn->isDeleted()) { |
11132 | std::string FnDesc; |
11133 | std::pair<OverloadCandidateKind, OverloadCandidateSelect> FnKindPair = |
11134 | ClassifyOverloadCandidate(S, Cand->FoundDecl, Fn, |
11135 | Cand->getRewriteKind(), FnDesc); |
11136 | |
11137 | S.Diag(Fn->getLocation(), diag::note_ovl_candidate_deleted) |
11138 | << (unsigned)FnKindPair.first << (unsigned)FnKindPair.second << FnDesc |
11139 | << (Fn->isDeleted() ? (Fn->isDeletedAsWritten() ? 1 : 2) : 0); |
11140 | MaybeEmitInheritedConstructorNote(S, Cand->FoundDecl); |
11141 | return; |
11142 | } |
11143 | |
11144 | |
11145 | S.NoteOverloadCandidate(Cand->FoundDecl, Fn, Cand->getRewriteKind()); |
11146 | return; |
11147 | } |
11148 | |
11149 | switch (Cand->FailureKind) { |
11150 | case ovl_fail_too_many_arguments: |
11151 | case ovl_fail_too_few_arguments: |
11152 | return DiagnoseArityMismatch(S, Cand, NumArgs); |
11153 | |
11154 | case ovl_fail_bad_deduction: |
11155 | return DiagnoseBadDeduction(S, Cand, NumArgs, |
11156 | TakingCandidateAddress); |
11157 | |
11158 | case ovl_fail_illegal_constructor: { |
11159 | S.Diag(Fn->getLocation(), diag::note_ovl_candidate_illegal_constructor) |
11160 | << (Fn->getPrimaryTemplate() ? 1 : 0); |
11161 | MaybeEmitInheritedConstructorNote(S, Cand->FoundDecl); |
11162 | return; |
11163 | } |
11164 | |
11165 | case ovl_fail_object_addrspace_mismatch: { |
11166 | Qualifiers QualsForPrinting; |
11167 | QualsForPrinting.setAddressSpace(CtorDestAS); |
11168 | S.Diag(Fn->getLocation(), |
11169 | diag::note_ovl_candidate_illegal_constructor_adrspace_mismatch) |
11170 | << QualsForPrinting; |
11171 | MaybeEmitInheritedConstructorNote(S, Cand->FoundDecl); |
11172 | return; |
11173 | } |
11174 | |
11175 | case ovl_fail_trivial_conversion: |
11176 | case ovl_fail_bad_final_conversion: |
11177 | case ovl_fail_final_conversion_not_exact: |
11178 | return S.NoteOverloadCandidate(Cand->FoundDecl, Fn, Cand->getRewriteKind()); |
11179 | |
11180 | case ovl_fail_bad_conversion: { |
11181 | unsigned I = (Cand->IgnoreObjectArgument ? 1 : 0); |
11182 | for (unsigned N = Cand->Conversions.size(); I != N; ++I) |
11183 | if (Cand->Conversions[I].isBad()) |
11184 | return DiagnoseBadConversion(S, Cand, I, TakingCandidateAddress); |
11185 | |
11186 | |
11187 | |
11188 | |
11189 | return S.NoteOverloadCandidate(Cand->FoundDecl, Fn, Cand->getRewriteKind()); |
11190 | } |
11191 | |
11192 | case ovl_fail_bad_target: |
11193 | return DiagnoseBadTarget(S, Cand); |
11194 | |
11195 | case ovl_fail_enable_if: |
11196 | return DiagnoseFailedEnableIfAttr(S, Cand); |
11197 | |
11198 | case ovl_fail_explicit: |
11199 | return DiagnoseFailedExplicitSpec(S, Cand); |
11200 | |
11201 | case ovl_fail_inhctor_slice: |
11202 | |
11203 | if (cast<CXXConstructorDecl>(Fn)->isCopyOrMoveConstructor()) |
11204 | return; |
11205 | S.Diag(Fn->getLocation(), |
11206 | diag::note_ovl_candidate_inherited_constructor_slice) |
11207 | << (Fn->getPrimaryTemplate() ? 1 : 0) |
11208 | << Fn->getParamDecl(0)->getType()->isRValueReferenceType(); |
11209 | MaybeEmitInheritedConstructorNote(S, Cand->FoundDecl); |
11210 | return; |
11211 | |
11212 | case ovl_fail_addr_not_available: { |
11213 | bool Available = checkAddressOfCandidateIsAvailable(S, Cand->Function); |
11214 | (void)Available; |
11215 | assert(!Available); |
11216 | break; |
11217 | } |
11218 | case ovl_non_default_multiversion_function: |
11219 | |
11220 | break; |
11221 | |
11222 | case ovl_fail_constraints_not_satisfied: { |
11223 | std::string FnDesc; |
11224 | std::pair<OverloadCandidateKind, OverloadCandidateSelect> FnKindPair = |
11225 | ClassifyOverloadCandidate(S, Cand->FoundDecl, Fn, |
11226 | Cand->getRewriteKind(), FnDesc); |
11227 | |
11228 | S.Diag(Fn->getLocation(), |
11229 | diag::note_ovl_candidate_constraints_not_satisfied) |
11230 | << (unsigned)FnKindPair.first << (unsigned)ocs_non_template |
11231 | << FnDesc ; |
11232 | ConstraintSatisfaction Satisfaction; |
11233 | if (S.CheckFunctionConstraints(Fn, Satisfaction)) |
11234 | break; |
11235 | S.DiagnoseUnsatisfiedConstraint(Satisfaction); |
11236 | } |
11237 | } |
11238 | } |
11239 | |
11240 | static void NoteSurrogateCandidate(Sema &S, OverloadCandidate *Cand) { |
11241 | if (shouldSkipNotingLambdaConversionDecl(Cand->Surrogate)) |
11242 | return; |
11243 | |
11244 | |
11245 | |
11246 | |
11247 | QualType FnType = Cand->Surrogate->getConversionType(); |
11248 | bool isLValueReference = false; |
11249 | bool isRValueReference = false; |
11250 | bool isPointer = false; |
11251 | if (const LValueReferenceType *FnTypeRef = |
11252 | FnType->getAs<LValueReferenceType>()) { |
11253 | FnType = FnTypeRef->getPointeeType(); |
11254 | isLValueReference = true; |
11255 | } else if (const RValueReferenceType *FnTypeRef = |
11256 | FnType->getAs<RValueReferenceType>()) { |
11257 | FnType = FnTypeRef->getPointeeType(); |
11258 | isRValueReference = true; |
11259 | } |
11260 | if (const PointerType *FnTypePtr = FnType->getAs<PointerType>()) { |
11261 | FnType = FnTypePtr->getPointeeType(); |
11262 | isPointer = true; |
11263 | } |
11264 | |
11265 | FnType = QualType(FnType->getAs<FunctionType>(), 0); |
11266 | |
11267 | if (isPointer) FnType = S.Context.getPointerType(FnType); |
11268 | if (isRValueReference) FnType = S.Context.getRValueReferenceType(FnType); |
11269 | if (isLValueReference) FnType = S.Context.getLValueReferenceType(FnType); |
11270 | |
11271 | S.Diag(Cand->Surrogate->getLocation(), diag::note_ovl_surrogate_cand) |
11272 | << FnType; |
11273 | } |
11274 | |
11275 | static void NoteBuiltinOperatorCandidate(Sema &S, StringRef Opc, |
11276 | SourceLocation OpLoc, |
11277 | OverloadCandidate *Cand) { |
11278 | assert(Cand->Conversions.size() <= 2 && "builtin operator is not binary"); |
11279 | std::string TypeStr("operator"); |
11280 | TypeStr += Opc; |
11281 | TypeStr += "("; |
11282 | TypeStr += Cand->BuiltinParamTypes[0].getAsString(); |
11283 | if (Cand->Conversions.size() == 1) { |
11284 | TypeStr += ")"; |
11285 | S.Diag(OpLoc, diag::note_ovl_builtin_candidate) << TypeStr; |
11286 | } else { |
11287 | TypeStr += ", "; |
11288 | TypeStr += Cand->BuiltinParamTypes[1].getAsString(); |
11289 | TypeStr += ")"; |
11290 | S.Diag(OpLoc, diag::note_ovl_builtin_candidate) << TypeStr; |
11291 | } |
11292 | } |
11293 | |
11294 | static void NoteAmbiguousUserConversions(Sema &S, SourceLocation OpLoc, |
11295 | OverloadCandidate *Cand) { |
11296 | for (const ImplicitConversionSequence &ICS : Cand->Conversions) { |
11297 | if (ICS.isBad()) break; |
11298 | if (!ICS.isAmbiguous()) continue; |
11299 | |
11300 | ICS.DiagnoseAmbiguousConversion( |
11301 | S, OpLoc, S.PDiag(diag::note_ambiguous_type_conversion)); |
11302 | } |
11303 | } |
11304 | |
11305 | static SourceLocation GetLocationForCandidate(const OverloadCandidate *Cand) { |
11306 | if (Cand->Function) |
11307 | return Cand->Function->getLocation(); |
11308 | if (Cand->IsSurrogate) |
11309 | return Cand->Surrogate->getLocation(); |
11310 | return SourceLocation(); |
11311 | } |
11312 | |
11313 | static unsigned RankDeductionFailure(const DeductionFailureInfo &DFI) { |
11314 | switch ((Sema::TemplateDeductionResult)DFI.Result) { |
11315 | case Sema::TDK_Success: |
11316 | case Sema::TDK_NonDependentConversionFailure: |
11317 | llvm_unreachable("non-deduction failure while diagnosing bad deduction"); |
11318 | |
11319 | case Sema::TDK_Invalid: |
11320 | case Sema::TDK_Incomplete: |
11321 | case Sema::TDK_IncompletePack: |
11322 | return 1; |
11323 | |
11324 | case Sema::TDK_Underqualified: |
11325 | case Sema::TDK_Inconsistent: |
11326 | return 2; |
11327 | |
11328 | case Sema::TDK_SubstitutionFailure: |
11329 | case Sema::TDK_DeducedMismatch: |
11330 | case Sema::TDK_ConstraintsNotSatisfied: |
11331 | case Sema::TDK_DeducedMismatchNested: |
11332 | case Sema::TDK_NonDeducedMismatch: |
11333 | case Sema::TDK_MiscellaneousDeductionFailure: |
11334 | case Sema::TDK_CUDATargetMismatch: |
11335 | return 3; |
11336 | |
11337 | case Sema::TDK_InstantiationDepth: |
11338 | return 4; |
11339 | |
11340 | case Sema::TDK_InvalidExplicitArguments: |
11341 | return 5; |
11342 | |
11343 | case Sema::TDK_TooManyArguments: |
11344 | case Sema::TDK_TooFewArguments: |
11345 | return 6; |
11346 | } |
11347 | llvm_unreachable("Unhandled deduction result"); |
11348 | } |
11349 | |
11350 | namespace { |
11351 | struct CompareOverloadCandidatesForDisplay { |
11352 | Sema &S; |
11353 | SourceLocation Loc; |
11354 | size_t NumArgs; |
11355 | OverloadCandidateSet::CandidateSetKind CSK; |
11356 | |
11357 | CompareOverloadCandidatesForDisplay( |
11358 | Sema &S, SourceLocation Loc, size_t NArgs, |
11359 | OverloadCandidateSet::CandidateSetKind CSK) |
11360 | : S(S), NumArgs(NArgs), CSK(CSK) {} |
11361 | |
11362 | OverloadFailureKind EffectiveFailureKind(const OverloadCandidate *C) const { |
11363 | |
11364 | |
11365 | if (C->FailureKind == ovl_fail_too_many_arguments || |
11366 | C->FailureKind == ovl_fail_too_few_arguments) |
11367 | return static_cast<OverloadFailureKind>(C->FailureKind); |
11368 | |
11369 | if (C->Function) { |
11370 | if (NumArgs > C->Function->getNumParams() && !C->Function->isVariadic()) |
11371 | return ovl_fail_too_many_arguments; |
11372 | if (NumArgs < C->Function->getMinRequiredArguments()) |
11373 | return ovl_fail_too_few_arguments; |
11374 | } |
11375 | |
11376 | return static_cast<OverloadFailureKind>(C->FailureKind); |
11377 | } |
11378 | |
11379 | bool operator()(const OverloadCandidate *L, |
11380 | const OverloadCandidate *R) { |
11381 | |
11382 | if (L == R) return false; |
11383 | |
11384 | |
11385 | if (L->Viable) { |
11386 | if (!R->Viable) return true; |
11387 | |
11388 | |
11389 | |
11390 | |
11391 | if (isBetterOverloadCandidate(S, *L, *R, SourceLocation(), CSK)) |
11392 | return true; |
11393 | if (isBetterOverloadCandidate(S, *R, *L, SourceLocation(), CSK)) |
11394 | return false; |
11395 | } else if (R->Viable) |
11396 | return false; |
11397 | |
11398 | assert(L->Viable == R->Viable); |
11399 | |
11400 | |
11401 | if (!L->Viable) { |
11402 | OverloadFailureKind LFailureKind = EffectiveFailureKind(L); |
11403 | OverloadFailureKind RFailureKind = EffectiveFailureKind(R); |
11404 | |
11405 | |
11406 | if (LFailureKind == ovl_fail_too_many_arguments || |
11407 | LFailureKind == ovl_fail_too_few_arguments) { |
11408 | if (RFailureKind == ovl_fail_too_many_arguments || |
11409 | RFailureKind == ovl_fail_too_few_arguments) { |
11410 | int LDist = std::abs((int)L->getNumParams() - (int)NumArgs); |
11411 | int RDist = std::abs((int)R->getNumParams() - (int)NumArgs); |
11412 | if (LDist == RDist) { |
11413 | if (LFailureKind == RFailureKind) |
11414 | |
11415 | return !L->IsSurrogate && R->IsSurrogate; |
11416 | |
11417 | |
11418 | |
11419 | return LFailureKind == ovl_fail_too_many_arguments; |
11420 | } |
11421 | return LDist < RDist; |
11422 | } |
11423 | return false; |
11424 | } |
11425 | if (RFailureKind == ovl_fail_too_many_arguments || |
11426 | RFailureKind == ovl_fail_too_few_arguments) |
11427 | return true; |
11428 | |
11429 | |
11430 | |
11431 | if (LFailureKind == ovl_fail_bad_conversion) { |
11432 | if (RFailureKind != ovl_fail_bad_conversion) |
11433 | return true; |
11434 | |
11435 | |
11436 | |
11437 | unsigned numLFixes = L->Fix.NumConversionsFixed; |
11438 | unsigned numRFixes = R->Fix.NumConversionsFixed; |
11439 | numLFixes = (numLFixes == 0) ? UINT_MAX : numLFixes; |
11440 | numRFixes = (numRFixes == 0) ? UINT_MAX : numRFixes; |
11441 | if (numLFixes != numRFixes) { |
11442 | return numLFixes < numRFixes; |
11443 | } |
11444 | |
11445 | |
11446 | |
11447 | assert(L->Conversions.size() == R->Conversions.size()); |
11448 | |
11449 | int leftBetter = 0; |
11450 | unsigned I = (L->IgnoreObjectArgument || R->IgnoreObjectArgument); |
11451 | for (unsigned E = L->Conversions.size(); I != E; ++I) { |
11452 | switch (CompareImplicitConversionSequences(S, Loc, |
11453 | L->Conversions[I], |
11454 | R->Conversions[I])) { |
11455 | case ImplicitConversionSequence::Better: |
11456 | leftBetter++; |
11457 | break; |
11458 | |
11459 | case ImplicitConversionSequence::Worse: |
11460 | leftBetter--; |
11461 | break; |
11462 | |
11463 | case ImplicitConversionSequence::Indistinguishable: |
11464 | break; |
11465 | } |
11466 | } |
11467 | if (leftBetter > 0) return true; |
11468 | if (leftBetter < 0) return false; |
11469 | |
11470 | } else if (RFailureKind == ovl_fail_bad_conversion) |
11471 | return false; |
11472 | |
11473 | if (LFailureKind == ovl_fail_bad_deduction) { |
11474 | if (RFailureKind != ovl_fail_bad_deduction) |
11475 | return true; |
11476 | |
11477 | if (L->DeductionFailure.Result != R->DeductionFailure.Result) |
11478 | return RankDeductionFailure(L->DeductionFailure) |
11479 | < RankDeductionFailure(R->DeductionFailure); |
11480 | } else if (RFailureKind == ovl_fail_bad_deduction) |
11481 | return false; |
11482 | |
11483 | |
11484 | } |
11485 | |
11486 | |
11487 | SourceLocation LLoc = GetLocationForCandidate(L); |
11488 | SourceLocation RLoc = GetLocationForCandidate(R); |
11489 | |
11490 | |
11491 | if (LLoc.isInvalid()) return false; |
11492 | if (RLoc.isInvalid()) return true; |
11493 | |
11494 | return S.SourceMgr.isBeforeInTranslationUnit(LLoc, RLoc); |
11495 | } |
11496 | }; |
11497 | } |
11498 | |
11499 | |
11500 | |
11501 | |
11502 | static void |
11503 | CompleteNonViableCandidate(Sema &S, OverloadCandidate *Cand, |
11504 | ArrayRef<Expr *> Args, |
11505 | OverloadCandidateSet::CandidateSetKind CSK) { |
11506 | assert(!Cand->Viable); |
11507 | |
11508 | |
11509 | if (Cand->FailureKind != ovl_fail_bad_conversion) |
11510 | return; |
11511 | |
11512 | |
11513 | bool Unfixable = false; |
11514 | |
11515 | Cand->Fix.setConversionChecker(TryCopyInitialization); |
11516 | |
11517 | |
11518 | unsigned ConvCount = Cand->Conversions.size(); |
11519 | for (unsigned ConvIdx = (Cand->IgnoreObjectArgument ? 1 : 0); ; |
11520 | ++ConvIdx) { |
11521 | assert(ConvIdx != ConvCount && "no bad conversion in candidate"); |
11522 | if (Cand->Conversions[ConvIdx].isInitialized() && |
11523 | Cand->Conversions[ConvIdx].isBad()) { |
11524 | Unfixable = !Cand->TryToFixBadConversion(ConvIdx, S); |
11525 | break; |
11526 | } |
11527 | } |
11528 | |
11529 | |
11530 | |
11531 | bool SuppressUserConversions = false; |
11532 | |
11533 | unsigned ConvIdx = 0; |
11534 | unsigned ArgIdx = 0; |
11535 | ArrayRef<QualType> ParamTypes; |
11536 | bool Reversed = Cand->isReversed(); |
11537 | |
11538 | if (Cand->IsSurrogate) { |
11539 | QualType ConvType |
11540 | = Cand->Surrogate->getConversionType().getNonReferenceType(); |
11541 | if (const PointerType *ConvPtrType = ConvType->getAs<PointerType>()) |
11542 | ConvType = ConvPtrType->getPointeeType(); |
11543 | ParamTypes = ConvType->castAs<FunctionProtoType>()->getParamTypes(); |
11544 | |
11545 | ConvIdx = 1; |
11546 | } else if (Cand->Function) { |
11547 | ParamTypes = |
11548 | Cand->Function->getType()->castAs<FunctionProtoType>()->getParamTypes(); |
11549 | if (isa<CXXMethodDecl>(Cand->Function) && |
11550 | !isa<CXXConstructorDecl>(Cand->Function) && !Reversed) { |
11551 | |
11552 | ConvIdx = 1; |
11553 | if (CSK == OverloadCandidateSet::CSK_Operator && |
11554 | Cand->Function->getDeclName().getCXXOverloadedOperator() != OO_Call) |
11555 | |
11556 | ArgIdx = 1; |
11557 | } |
11558 | } else { |
11559 | |
11560 | assert(ConvCount <= 3); |
11561 | ParamTypes = Cand->BuiltinParamTypes; |
11562 | } |
11563 | |
11564 | |
11565 | for (unsigned ParamIdx = Reversed ? ParamTypes.size() - 1 : 0; |
11566 | ConvIdx != ConvCount; |
11567 | ++ConvIdx, ++ArgIdx, ParamIdx += (Reversed ? -1 : 1)) { |
11568 | assert(ArgIdx < Args.size() && "no argument for this arg conversion"); |
11569 | if (Cand->Conversions[ConvIdx].isInitialized()) { |
11570 | |
11571 | } else if (ParamIdx < ParamTypes.size()) { |
11572 | if (ParamTypes[ParamIdx]->isDependentType()) |
11573 | Cand->Conversions[ConvIdx].setAsIdentityConversion( |
11574 | Args[ArgIdx]->getType()); |
11575 | else { |
11576 | Cand->Conversions[ConvIdx] = |
11577 | TryCopyInitialization(S, Args[ArgIdx], ParamTypes[ParamIdx], |
11578 | SuppressUserConversions, |
11579 | true, |
11580 | |
11581 | S.getLangOpts().ObjCAutoRefCount); |
11582 | |
11583 | if (!Unfixable && Cand->Conversions[ConvIdx].isBad()) |
11584 | Unfixable = !Cand->TryToFixBadConversion(ConvIdx, S); |
11585 | } |
11586 | } else |
11587 | Cand->Conversions[ConvIdx].setEllipsis(); |
11588 | } |
11589 | } |
11590 | |
11591 | SmallVector<OverloadCandidate *, 32> OverloadCandidateSet::CompleteCandidates( |
11592 | Sema &S, OverloadCandidateDisplayKind OCD, ArrayRef<Expr *> Args, |
11593 | SourceLocation OpLoc, |
11594 | llvm::function_ref<bool(OverloadCandidate &)> Filter) { |
11595 | |
11596 | |
11597 | SmallVector<OverloadCandidate*, 32> Cands; |
11598 | if (OCD == OCD_AllCandidates) Cands.reserve(size()); |
11599 | for (iterator Cand = begin(), LastCand = end(); Cand != LastCand; ++Cand) { |
11600 | if (!Filter(*Cand)) |
11601 | continue; |
11602 | switch (OCD) { |
11603 | case OCD_AllCandidates: |
11604 | if (!Cand->Viable) { |
11605 | if (!Cand->Function && !Cand->IsSurrogate) { |
11606 | |
11607 | |
11608 | continue; |
11609 | } |
11610 | CompleteNonViableCandidate(S, Cand, Args, Kind); |
11611 | } |
11612 | break; |
11613 | |
11614 | case OCD_ViableCandidates: |
11615 | if (!Cand->Viable) |
11616 | continue; |
11617 | break; |
11618 | |
11619 | case OCD_AmbiguousCandidates: |
11620 | if (!Cand->Best) |
11621 | continue; |
11622 | break; |
11623 | } |
11624 | |
11625 | Cands.push_back(Cand); |
11626 | } |
11627 | |
11628 | llvm::stable_sort( |
11629 | Cands, CompareOverloadCandidatesForDisplay(S, OpLoc, Args.size(), Kind)); |
11630 | |
11631 | return Cands; |
11632 | } |
11633 | |
11634 | bool OverloadCandidateSet::shouldDeferDiags(Sema &S, ArrayRef<Expr *> Args, |
11635 | SourceLocation OpLoc) { |
11636 | bool DeferHint = false; |
11637 | if (S.getLangOpts().CUDA && S.getLangOpts().GPUDeferDiag) { |
11638 | |
11639 | |
11640 | auto WrongSidedCands = |
11641 | CompleteCandidates(S, OCD_AllCandidates, Args, OpLoc, [](auto &Cand) { |
11642 | return (Cand.Viable == false && |
11643 | Cand.FailureKind == ovl_fail_bad_target) || |
11644 | (Cand.Function && |
11645 | Cand.Function->template hasAttr<CUDAHostAttr>() && |
11646 | Cand.Function->template hasAttr<CUDADeviceAttr>()); |
11647 | }); |
11648 | DeferHint = !WrongSidedCands.empty(); |
11649 | } |
11650 | return DeferHint; |
11651 | } |
11652 | |
11653 | |
11654 | |
11655 | void OverloadCandidateSet::NoteCandidates( |
11656 | PartialDiagnosticAt PD, Sema &S, OverloadCandidateDisplayKind OCD, |
11657 | ArrayRef<Expr *> Args, StringRef Opc, SourceLocation OpLoc, |
11658 | llvm::function_ref<bool(OverloadCandidate &)> Filter) { |
11659 | |
11660 | auto Cands = CompleteCandidates(S, OCD, Args, OpLoc, Filter); |
11661 | |
11662 | S.Diag(PD.first, PD.second, shouldDeferDiags(S, Args, OpLoc)); |
11663 | |
11664 | NoteCandidates(S, Args, Cands, Opc, OpLoc); |
11665 | |
11666 | if (OCD == OCD_AmbiguousCandidates) |
11667 | MaybeDiagnoseAmbiguousConstraints(S, {begin(), end()}); |
11668 | } |
11669 | |
11670 | void OverloadCandidateSet::NoteCandidates(Sema &S, ArrayRef<Expr *> Args, |
11671 | ArrayRef<OverloadCandidate *> Cands, |
11672 | StringRef Opc, SourceLocation OpLoc) { |
11673 | bool ReportedAmbiguousConversions = false; |
11674 | |
11675 | const OverloadsShown ShowOverloads = S.Diags.getShowOverloads(); |
11676 | unsigned CandsShown = 0; |
11677 | auto I = Cands.begin(), E = Cands.end(); |
11678 | for (; I != E; ++I) { |
11679 | OverloadCandidate *Cand = *I; |
11680 | |
11681 | if (CandsShown >= S.Diags.getNumOverloadCandidatesToShow() && |
11682 | ShowOverloads == Ovl_Best) { |
11683 | break; |
11684 | } |
11685 | ++CandsShown; |
11686 | |
11687 | if (Cand->Function) |
11688 | NoteFunctionCandidate(S, Cand, Args.size(), |
11689 | false, DestAS); |
11690 | else if (Cand->IsSurrogate) |
11691 | NoteSurrogateCandidate(S, Cand); |
11692 | else { |
11693 | assert(Cand->Viable && |
11694 | "Non-viable built-in candidates are not added to Cands."); |
11695 | |
11696 | |
11697 | |
11698 | |
11699 | |
11700 | |
11701 | if (!ReportedAmbiguousConversions) { |
11702 | NoteAmbiguousUserConversions(S, OpLoc, Cand); |
11703 | ReportedAmbiguousConversions = true; |
11704 | } |
11705 | |
11706 | |
11707 | NoteBuiltinOperatorCandidate(S, Opc, OpLoc, Cand); |
11708 | } |
11709 | } |
11710 | |
11711 | |
11712 | |
11713 | S.Diags.overloadCandidatesShown(CandsShown); |
11714 | |
11715 | if (I != E) |
11716 | S.Diag(OpLoc, diag::note_ovl_too_many_candidates, |
11717 | shouldDeferDiags(S, Args, OpLoc)) |
11718 | << int(E - I); |
11719 | } |
11720 | |
11721 | static SourceLocation |
11722 | GetLocationForCandidate(const TemplateSpecCandidate *Cand) { |
11723 | return Cand->Specialization ? Cand->Specialization->getLocation() |
11724 | : SourceLocation(); |
11725 | } |
11726 | |
11727 | namespace { |
11728 | struct CompareTemplateSpecCandidatesForDisplay { |
11729 | Sema &S; |
11730 | CompareTemplateSpecCandidatesForDisplay(Sema &S) : S(S) {} |
11731 | |
11732 | bool operator()(const TemplateSpecCandidate *L, |
11733 | const TemplateSpecCandidate *R) { |
11734 | |
11735 | if (L == R) |
11736 | return false; |
11737 | |
11738 | |
11739 | |
11740 | |
11741 | if (L->DeductionFailure.Result != R->DeductionFailure.Result) |
11742 | return RankDeductionFailure(L->DeductionFailure) < |
11743 | RankDeductionFailure(R->DeductionFailure); |
11744 | |
11745 | |
11746 | SourceLocation LLoc = GetLocationForCandidate(L); |
11747 | SourceLocation RLoc = GetLocationForCandidate(R); |
11748 | |
11749 | |
11750 | if (LLoc.isInvalid()) |
11751 | return false; |
11752 | if (RLoc.isInvalid()) |
11753 | return true; |
11754 | |
11755 | return S.SourceMgr.isBeforeInTranslationUnit(LLoc, RLoc); |
11756 | } |
11757 | }; |
11758 | } |
11759 | |
11760 | |
11761 | |
11762 | |
11763 | void TemplateSpecCandidate::NoteDeductionFailure(Sema &S, |
11764 | bool ForTakingAddress) { |
11765 | DiagnoseBadDeduction(S, FoundDecl, Specialization, |
11766 | DeductionFailure, 0, ForTakingAddress); |
11767 | } |
11768 | |
11769 | void TemplateSpecCandidateSet::destroyCandidates() { |
11770 | for (iterator i = begin(), e = end(); i != e; ++i) { |
11771 | i->DeductionFailure.Destroy(); |
11772 | } |
11773 | } |
11774 | |
11775 | void TemplateSpecCandidateSet::clear() { |
11776 | destroyCandidates(); |
11777 | Candidates.clear(); |
11778 | } |
11779 | |
11780 | |
11781 | |
11782 | |
11783 | |
11784 | |
11785 | void TemplateSpecCandidateSet::NoteCandidates(Sema &S, SourceLocation Loc) { |
11786 | |
11787 | |
11788 | |
11789 | SmallVector<TemplateSpecCandidate *, 32> Cands; |
11790 | Cands.reserve(size()); |
11791 | for (iterator Cand = begin(), LastCand = end(); Cand != LastCand; ++Cand) { |
11792 | if (Cand->Specialization) |
11793 | Cands.push_back(Cand); |
11794 | |
11795 | |
11796 | } |
11797 | |
11798 | llvm::sort(Cands, CompareTemplateSpecCandidatesForDisplay(S)); |
11799 | |
11800 | |
11801 | |
11802 | const OverloadsShown ShowOverloads = S.Diags.getShowOverloads(); |
11803 | |
11804 | SmallVectorImpl<TemplateSpecCandidate *>::iterator I, E; |
11805 | unsigned CandsShown = 0; |
11806 | for (I = Cands.begin(), E = Cands.end(); I != E; ++I) { |
11807 | TemplateSpecCandidate *Cand = *I; |
11808 | |
11809 | |
11810 | |
11811 | |
11812 | if (CandsShown >= 4 && ShowOverloads == Ovl_Best) |
11813 | break; |
11814 | ++CandsShown; |
11815 | |
11816 | assert(Cand->Specialization && |
11817 | "Non-matching built-in candidates are not added to Cands."); |
11818 | Cand->NoteDeductionFailure(S, ForTakingAddress); |
11819 | } |
11820 | |
11821 | if (I != E) |
11822 | S.Diag(Loc, diag::note_ovl_too_many_candidates) << int(E - I); |
11823 | } |
11824 | |
11825 | |
11826 | |
11827 | |
11828 | |
11829 | |
11830 | |
11831 | QualType Sema::ExtractUnqualifiedFunctionType(QualType PossiblyAFunctionType) { |
11832 | QualType Ret = PossiblyAFunctionType; |
11833 | if (const PointerType *ToTypePtr = |
11834 | PossiblyAFunctionType->getAs<PointerType>()) |
11835 | Ret = ToTypePtr->getPointeeType(); |
11836 | else if (const ReferenceType *ToTypeRef = |
11837 | PossiblyAFunctionType->getAs<ReferenceType>()) |
11838 | Ret = ToTypeRef->getPointeeType(); |
11839 | else if (const MemberPointerType *MemTypePtr = |
11840 | PossiblyAFunctionType->getAs<MemberPointerType>()) |
11841 | Ret = MemTypePtr->getPointeeType(); |
11842 | Ret = |
11843 | Context.getCanonicalType(Ret).getUnqualifiedType(); |
11844 | return Ret; |
11845 | } |
11846 | |
11847 | static bool completeFunctionType(Sema &S, FunctionDecl *FD, SourceLocation Loc, |
11848 | bool Complain = true) { |
11849 | if (S.getLangOpts().CPlusPlus14 && FD->getReturnType()->isUndeducedType() && |
11850 | S.DeduceReturnType(FD, Loc, Complain)) |
11851 | return true; |
11852 | |
11853 | auto *FPT = FD->getType()->castAs<FunctionProtoType>(); |
11854 | if (S.getLangOpts().CPlusPlus17 && |
11855 | isUnresolvedExceptionSpec(FPT->getExceptionSpecType()) && |
11856 | !S.ResolveExceptionSpec(Loc, FPT)) |
11857 | return true; |
11858 | |
11859 | return false; |
11860 | } |
11861 | |
11862 | namespace { |
11863 | |
11864 | |
11865 | class AddressOfFunctionResolver { |
11866 | Sema& S; |
11867 | Expr* SourceExpr; |
11868 | const QualType& TargetType; |
11869 | QualType TargetFunctionType; |
11870 | |
11871 | bool Complain; |
11872 | |
11873 | ASTContext& Context; |
11874 | |
11875 | bool TargetTypeIsNonStaticMemberFunction; |
11876 | bool FoundNonTemplateFunction; |
11877 | bool StaticMemberFunctionFromBoundPointer; |
11878 | bool HasComplained; |
11879 | |
11880 | OverloadExpr::FindResult OvlExprInfo; |
11881 | OverloadExpr *OvlExpr; |
11882 | TemplateArgumentListInfo OvlExplicitTemplateArgs; |
11883 | SmallVector<std::pair<DeclAccessPair, FunctionDecl*>, 4> Matches; |
11884 | TemplateSpecCandidateSet FailedCandidates; |
11885 | |
11886 | public: |
11887 | AddressOfFunctionResolver(Sema &S, Expr *SourceExpr, |
11888 | const QualType &TargetType, bool Complain) |
11889 | : S(S), SourceExpr(SourceExpr), TargetType(TargetType), |
11890 | Complain(Complain), Context(S.getASTContext()), |
11891 | TargetTypeIsNonStaticMemberFunction( |
11892 | !!TargetType->getAs<MemberPointerType>()), |
11893 | FoundNonTemplateFunction(false), |
11894 | StaticMemberFunctionFromBoundPointer(false), |
11895 | HasComplained(false), |
11896 | OvlExprInfo(OverloadExpr::find(SourceExpr)), |
11897 | OvlExpr(OvlExprInfo.Expression), |
11898 | FailedCandidates(OvlExpr->getNameLoc(), true) { |
11899 | ExtractUnqualifiedFunctionTypeFromTargetType(); |
11900 | |
11901 | if (TargetFunctionType->isFunctionType()) { |
11902 | if (UnresolvedMemberExpr *UME = dyn_cast<UnresolvedMemberExpr>(OvlExpr)) |
11903 | if (!UME->isImplicitAccess() && |
11904 | !S.ResolveSingleFunctionTemplateSpecialization(UME)) |
11905 | StaticMemberFunctionFromBoundPointer = true; |
11906 | } else if (OvlExpr->hasExplicitTemplateArgs()) { |
11907 | DeclAccessPair dap; |
11908 | if (FunctionDecl *Fn = S.ResolveSingleFunctionTemplateSpecialization( |
11909 | OvlExpr, false, &dap)) { |
11910 | if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(Fn)) |
11911 | if (!Method->isStatic()) { |
11912 | |
11913 | |
11914 | |
11915 | TargetTypeIsNonStaticMemberFunction = true; |
11916 | |
11917 | |
11918 | |
11919 | if (!OvlExprInfo.HasFormOfMemberPointer) |
11920 | return; |
11921 | } |
11922 | |
11923 | Matches.push_back(std::make_pair(dap, Fn)); |
11924 | } |
11925 | return; |
11926 | } |
11927 | |
11928 | if (OvlExpr->hasExplicitTemplateArgs()) |
11929 | OvlExpr->copyTemplateArgumentsInto(OvlExplicitTemplateArgs); |
11930 | |
11931 | if (FindAllFunctionsThatMatchTargetTypeExactly()) { |
11932 | |
11933 | |
11934 | if (Matches.size() > 1 && !eliminiateSuboptimalOverloadCandidates()) { |
11935 | if (FoundNonTemplateFunction) |
11936 | EliminateAllTemplateMatches(); |
11937 | else |
11938 | EliminateAllExceptMostSpecializedTemplate(); |
11939 | } |
11940 | } |
11941 | |
11942 | if (S.getLangOpts().CUDA && Matches.size() > 1) |
11943 | EliminateSuboptimalCudaMatches(); |
11944 | } |
11945 | |
11946 | bool hasComplained() const { return HasComplained; } |
11947 | |
11948 | private: |
11949 | bool candidateHasExactlyCorrectType(const FunctionDecl *FD) { |
11950 | QualType Discard; |
11951 | return Context.hasSameUnqualifiedType(TargetFunctionType, FD->getType()) || |
11952 | S.IsFunctionConversion(FD->getType(), TargetFunctionType, Discard); |
11953 | } |
11954 | |
11955 | |
11956 | |
11957 | bool isBetterCandidate(const FunctionDecl *A, const FunctionDecl *B) { |
11958 | |
11959 | |
11960 | |
11961 | return candidateHasExactlyCorrectType(A) && |
11962 | (!candidateHasExactlyCorrectType(B) || |
11963 | compareEnableIfAttrs(S, A, B) == Comparison::Better); |
11964 | } |
11965 | |
11966 | |
11967 | |
11968 | bool eliminiateSuboptimalOverloadCandidates() { |
11969 | |
11970 | |
11971 | auto Best = Matches.begin(); |
11972 | for (auto I = Matches.begin()+1, E = Matches.end(); I != E; ++I) |
11973 | if (isBetterCandidate(I->second, Best->second)) |
11974 | Best = I; |
11975 | |
11976 | const FunctionDecl *BestFn = Best->second; |
11977 | auto IsBestOrInferiorToBest = [this, BestFn]( |
11978 | const std::pair<DeclAccessPair, FunctionDecl *> &Pair) { |
11979 | return BestFn == Pair.second || isBetterCandidate(BestFn, Pair.second); |
11980 | }; |
11981 | |
11982 | |
11983 | |
11984 | if (!llvm::all_of(Matches, IsBestOrInferiorToBest)) |
11985 | return false; |
11986 | Matches[0] = *Best; |
11987 | Matches.resize(1); |
11988 | return true; |
11989 | } |
11990 | |
11991 | bool isTargetTypeAFunction() const { |
11992 | return TargetFunctionType->isFunctionType(); |
11993 | } |
11994 | |
11995 | |
11996 | |
11997 | |
11998 | |
11999 | |
12000 | void inline ExtractUnqualifiedFunctionTypeFromTargetType() { |
12001 | TargetFunctionType = S.ExtractUnqualifiedFunctionType(TargetType); |
12002 | } |
12003 | |
12004 | |
12005 | bool AddMatchingTemplateFunction(FunctionTemplateDecl* FunctionTemplate, |
12006 | const DeclAccessPair& CurAccessFunPair) { |
12007 | if (CXXMethodDecl *Method |
12008 | = dyn_cast<CXXMethodDecl>(FunctionTemplate->getTemplatedDecl())) { |
12009 | |
12010 | |
12011 | if (Method->isStatic() == TargetTypeIsNonStaticMemberFunction) |
12012 | return false; |
12013 | } |
12014 | else if (TargetTypeIsNonStaticMemberFunction) |
12015 | return false; |
12016 | |
12017 | |
12018 | |
12019 | |
12020 | |
12021 | |
12022 | |
12023 | FunctionDecl *Specialization = nullptr; |
12024 | TemplateDeductionInfo Info(FailedCandidates.getLocation()); |
12025 | if (Sema::TemplateDeductionResult Result |
12026 | = S.DeduceTemplateArguments(FunctionTemplate, |
12027 | &OvlExplicitTemplateArgs, |
12028 | TargetFunctionType, Specialization, |
12029 | Info, true)) { |
12030 | |
12031 | FailedCandidates.addCandidate() |
12032 | .set(CurAccessFunPair, FunctionTemplate->getTemplatedDecl(), |
12033 | MakeDeductionFailureInfo(Context, Result, Info)); |
12034 | return false; |
12035 | } |
12036 | |
12037 | |
12038 | |
12039 | |
12040 | assert(S.isSameOrCompatibleFunctionType( |
12041 | Context.getCanonicalType(Specialization->getType()), |
12042 | Context.getCanonicalType(TargetFunctionType))); |
12043 | |
12044 | if (!S.checkAddressOfFunctionIsAvailable(Specialization)) |
12045 | return false; |
12046 | |
12047 | Matches.push_back(std::make_pair(CurAccessFunPair, Specialization)); |
12048 | return true; |
12049 | } |
12050 | |
12051 | bool AddMatchingNonTemplateFunction(NamedDecl* Fn, |
12052 | const DeclAccessPair& CurAccessFunPair) { |
12053 | if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(Fn)) { |
12054 | |
12055 | |
12056 | if (Method->isStatic() == TargetTypeIsNonStaticMemberFunction) |
12057 | return false; |
12058 | } |
12059 | else if (TargetTypeIsNonStaticMemberFunction) |
12060 | return false; |
12061 | |
12062 | if (FunctionDecl *FunDecl = dyn_cast<FunctionDecl>(Fn)) { |
12063 | if (S.getLangOpts().CUDA) |
12064 | if (FunctionDecl *Caller = dyn_cast<FunctionDecl>(S.CurContext)) |
12065 | if (!Caller->isImplicit() && !S.IsAllowedCUDACall(Caller, FunDecl)) |
12066 | return false; |
12067 | if (FunDecl->isMultiVersion()) { |
12068 | const auto *TA = FunDecl->getAttr<TargetAttr>(); |
12069 | if (TA && !TA->isDefaultVersion()) |
12070 | return false; |
12071 | } |
12072 | |
12073 | |
12074 | |
12075 | if (completeFunctionType(S, FunDecl, SourceExpr->getBeginLoc(), |
12076 | Complain)) { |
12077 | HasComplained |= Complain; |
12078 | return false; |
12079 | } |
12080 | |
12081 | if (!S.checkAddressOfFunctionIsAvailable(FunDecl)) |
12082 | return false; |
12083 | |
12084 | |
12085 | if (!S.getLangOpts().CPlusPlus || |
12086 | candidateHasExactlyCorrectType(FunDecl)) { |
12087 | Matches.push_back(std::make_pair( |
12088 | CurAccessFunPair, cast<FunctionDecl>(FunDecl->getCanonicalDecl()))); |
12089 | FoundNonTemplateFunction = true; |
12090 | return true; |
12091 | } |
12092 | } |
12093 | |
12094 | return false; |
12095 | } |
12096 | |
12097 | bool FindAllFunctionsThatMatchTargetTypeExactly() { |
12098 | bool Ret = false; |
12099 | |
12100 | |
12101 | |
12102 | if (IsInvalidFormOfPointerToMemberFunction()) |
12103 | return false; |
12104 | |
12105 | for (UnresolvedSetIterator I = OvlExpr->decls_begin(), |
12106 | E = OvlExpr->decls_end(); |
12107 | I != E; ++I) { |
12108 | |
12109 | NamedDecl *Fn = (*I)->getUnderlyingDecl(); |
12110 | |
12111 | |
12112 | |
12113 | |
12114 | |
12115 | |
12116 | |
12117 | if (FunctionTemplateDecl *FunctionTemplate |
12118 | = dyn_cast<FunctionTemplateDecl>(Fn)) { |
12119 | if (AddMatchingTemplateFunction(FunctionTemplate, I.getPair())) |
12120 | Ret = true; |
12121 | } |
12122 | |
12123 | else if (!OvlExpr->hasExplicitTemplateArgs() && |
12124 | AddMatchingNonTemplateFunction(Fn, I.getPair())) |
12125 | Ret = true; |
12126 | } |
12127 | assert(Ret || Matches.empty()); |
12128 | return Ret; |
12129 | } |
12130 | |
12131 | void EliminateAllExceptMostSpecializedTemplate() { |
12132 | |
12133 | |
12134 | |
12135 | |
12136 | |
12137 | |
12138 | |
12139 | |
12140 | |
12141 | |
12142 | |
12143 | UnresolvedSet<4> MatchesCopy; |
12144 | for (unsigned I = 0, E = Matches.size(); I != E; ++I) |
12145 | MatchesCopy.addDecl(Matches[I].second, Matches[I].first.getAccess()); |
12146 | |
12147 | |
12148 | |
12149 | UnresolvedSetIterator Result = S.getMostSpecialized( |
12150 | MatchesCopy.begin(), MatchesCopy.end(), FailedCandidates, |
12151 | SourceExpr->getBeginLoc(), S.PDiag(), |
12152 | S.PDiag(diag::err_addr_ovl_ambiguous) |
12153 | << Matches[0].second->getDeclName(), |
12154 | S.PDiag(diag::note_ovl_candidate) |
12155 | << (unsigned)oc_function << (unsigned)ocs_described_template, |
12156 | Complain, TargetFunctionType); |
12157 | |
12158 | if (Result != MatchesCopy.end()) { |
12159 | |
12160 | Matches[0].first = Matches[Result - MatchesCopy.begin()].first; |
12161 | Matches[0].second = cast<FunctionDecl>(*Result); |
12162 | Matches.resize(1); |
12163 | } else |
12164 | HasComplained |= Complain; |
12165 | } |
12166 | |
12167 | void EliminateAllTemplateMatches() { |
12168 | |
12169 | |
12170 | for (unsigned I = 0, N = Matches.size(); I != N; ) { |
12171 | if (Matches[I].second->getPrimaryTemplate() == nullptr) |
12172 | ++I; |
12173 | else { |
12174 | Matches[I] = Matches[--N]; |
12175 | Matches.resize(N); |
12176 | } |
12177 | } |
12178 | } |
12179 | |
12180 | void EliminateSuboptimalCudaMatches() { |
12181 | S.EraseUnwantedCUDAMatches(dyn_cast<FunctionDecl>(S.CurContext), Matches); |
12182 | } |
12183 | |
12184 | public: |
12185 | void ComplainNoMatchesFound() const { |
12186 | assert(Matches.empty()); |
12187 | S.Diag(OvlExpr->getBeginLoc(), diag::err_addr_ovl_no_viable) |
12188 | << OvlExpr->getName() << TargetFunctionType |
12189 | << OvlExpr->getSourceRange(); |
12190 | if (FailedCandidates.empty()) |
12191 | S.NoteAllOverloadCandidates(OvlExpr, TargetFunctionType, |
12192 | true); |
12193 | else { |
12194 | |
12195 | |
12196 | |
12197 | for (UnresolvedSetIterator I = OvlExpr->decls_begin(), |
12198 | IEnd = OvlExpr->decls_end(); |
12199 | I != IEnd; ++I) |
12200 | if (FunctionDecl *Fun = |
12201 | dyn_cast<FunctionDecl>((*I)->getUnderlyingDecl())) |
12202 | if (!functionHasPassObjectSizeParams(Fun)) |
12203 | S.NoteOverloadCandidate(*I, Fun, CRK_None, TargetFunctionType, |
12204 | true); |
12205 | FailedCandidates.NoteCandidates(S, OvlExpr->getBeginLoc()); |
12206 | } |
12207 | } |
12208 | |
12209 | bool IsInvalidFormOfPointerToMemberFunction() const { |
12210 | return TargetTypeIsNonStaticMemberFunction && |
12211 | !OvlExprInfo.HasFormOfMemberPointer; |
12212 | } |
12213 | |
12214 | void ComplainIsInvalidFormOfPointerToMemberFunction() const { |
12215 | |
12216 | |
12217 | |
12218 | S.Diag(OvlExpr->getNameLoc(), diag::err_addr_ovl_no_qualifier) |
12219 | << TargetType << OvlExpr->getSourceRange(); |
12220 | } |
12221 | |
12222 | bool IsStaticMemberFunctionFromBoundPointer() const { |
12223 | return StaticMemberFunctionFromBoundPointer; |
12224 | } |
12225 | |
12226 | void ComplainIsStaticMemberFunctionFromBoundPointer() const { |
12227 | S.Diag(OvlExpr->getBeginLoc(), |
12228 | diag::err_invalid_form_pointer_member_function) |
12229 | << OvlExpr->getSourceRange(); |
12230 | } |
12231 | |
12232 | void ComplainOfInvalidConversion() const { |
12233 | S.Diag(OvlExpr->getBeginLoc(), diag::err_addr_ovl_not_func_ptrref) |
12234 | << OvlExpr->getName() << TargetType; |
12235 | } |
12236 | |
12237 | void ComplainMultipleMatchesFound() const { |
12238 | assert(Matches.size() > 1); |
12239 | S.Diag(OvlExpr->getBeginLoc(), diag::err_addr_ovl_ambiguous) |
12240 | << OvlExpr->getName() << OvlExpr->getSourceRange(); |
12241 | S.NoteAllOverloadCandidates(OvlExpr, TargetFunctionType, |
12242 | true); |
12243 | } |
12244 | |
12245 | bool hadMultipleCandidates() const { return (OvlExpr->getNumDecls() > 1); } |
12246 | |
12247 | int getNumMatches() const { return Matches.size(); } |
12248 | |
12249 | FunctionDecl* getMatchingFunctionDecl() const { |
12250 | if (Matches.size() != 1) return nullptr; |
12251 | return Matches[0].second; |
12252 | } |
12253 | |
12254 | const DeclAccessPair* getMatchingFunctionAccessPair() const { |
12255 | if (Matches.size() != 1) return nullptr; |
12256 | return &Matches[0].first; |
12257 | } |
12258 | }; |
12259 | } |
12260 | |
12261 | |
12262 | |
12263 | |
12264 | |
12265 | |
12266 | |
12267 | |
12268 | |
12269 | |
12270 | |
12271 | |
12272 | |
12273 | |
12274 | |
12275 | |
12276 | FunctionDecl * |
12277 | Sema::ResolveAddressOfOverloadedFunction(Expr *AddressOfExpr, |
12278 | QualType TargetType, |
12279 | bool Complain, |
12280 | DeclAccessPair &FoundResult, |
12281 | bool *pHadMultipleCandidates) { |
12282 | assert(AddressOfExpr->getType() == Context.OverloadTy); |
12283 | |
12284 | AddressOfFunctionResolver Resolver(*this, AddressOfExpr, TargetType, |
12285 | Complain); |
12286 | int NumMatches = Resolver.getNumMatches(); |
12287 | FunctionDecl *Fn = nullptr; |
12288 | bool ShouldComplain = Complain && !Resolver.hasComplained(); |
12289 | if (NumMatches == 0 && ShouldComplain) { |
12290 | if (Resolver.IsInvalidFormOfPointerToMemberFunction()) |
12291 | Resolver.ComplainIsInvalidFormOfPointerToMemberFunction(); |
12292 | else |
12293 | Resolver.ComplainNoMatchesFound(); |
12294 | } |
12295 | else if (NumMatches > 1 && ShouldComplain) |
12296 | Resolver.ComplainMultipleMatchesFound(); |
12297 | else if (NumMatches == 1) { |
12298 | Fn = Resolver.getMatchingFunctionDecl(); |
12299 | assert(Fn); |
12300 | if (auto *FPT = Fn->getType()->getAs<FunctionProtoType>()) |
12301 | ResolveExceptionSpec(AddressOfExpr->getExprLoc(), FPT); |
12302 | FoundResult = *Resolver.getMatchingFunctionAccessPair(); |
12303 | if (Complain) { |
12304 | if (Resolver.IsStaticMemberFunctionFromBoundPointer()) |
12305 | Resolver.ComplainIsStaticMemberFunctionFromBoundPointer(); |
12306 | else |
12307 | CheckAddressOfMemberAccess(AddressOfExpr, FoundResult); |
12308 | } |
12309 | } |
12310 | |
12311 | if (pHadMultipleCandidates) |
12312 | *pHadMultipleCandidates = Resolver.hadMultipleCandidates(); |
12313 | return Fn; |
12314 | } |
12315 | |
12316 | |
12317 | |
12318 | |
12319 | |
12320 | |
12321 | |
12322 | |
12323 | FunctionDecl * |
12324 | Sema::resolveAddressOfSingleOverloadCandidate(Expr *E, DeclAccessPair &Pair) { |
12325 | OverloadExpr::FindResult R = OverloadExpr::find(E); |
12326 | OverloadExpr *Ovl = R.Expression; |
12327 | bool IsResultAmbiguous = false; |
12328 | FunctionDecl *Result = nullptr; |
12329 | DeclAccessPair DAP; |
12330 | SmallVector<FunctionDecl *, 2> AmbiguousDecls; |
12331 | |
12332 | auto CheckMoreConstrained = |
12333 | [&] (FunctionDecl *FD1, FunctionDecl *FD2) -> Optional<bool> { |
12334 | SmallVector<const Expr *, 1> AC1, AC2; |
12335 | FD1->getAssociatedConstraints(AC1); |
12336 | FD2->getAssociatedConstraints(AC2); |
12337 | bool AtLeastAsConstrained1, AtLeastAsConstrained2; |
12338 | if (IsAtLeastAsConstrained(FD1, AC1, FD2, AC2, AtLeastAsConstrained1)) |
12339 | return None; |
12340 | if (IsAtLeastAsConstrained(FD2, AC2, FD1, AC1, AtLeastAsConstrained2)) |
12341 | return None; |
12342 | if (AtLeastAsConstrained1 == AtLeastAsConstrained2) |
12343 | return None; |
12344 | return AtLeastAsConstrained1; |
12345 | }; |
12346 | |
12347 | |
12348 | |
12349 | |
12350 | for (auto I = Ovl->decls_begin(), E = Ovl->decls_end(); I != E; ++I) { |
12351 | auto *FD = dyn_cast<FunctionDecl>(I->getUnderlyingDecl()); |
12352 | if (!FD) |
12353 | return nullptr; |
12354 | |
12355 | if (!checkAddressOfFunctionIsAvailable(FD)) |
12356 | continue; |
12357 | |
12358 | |
12359 | |
12360 | if (Result) { |
12361 | Optional<bool> MoreConstrainedThanPrevious = CheckMoreConstrained(FD, |
12362 | Result); |
12363 | if (!MoreConstrainedThanPrevious) { |
12364 | IsResultAmbiguous = true; |
12365 | AmbiguousDecls.push_back(FD); |
12366 | continue; |
12367 | } |
12368 | if (!*MoreConstrainedThanPrevious) |
12369 | continue; |
12370 | |
12371 | } |
12372 | IsResultAmbiguous = false; |
12373 | DAP = I.getPair(); |
12374 | Result = FD; |
12375 | } |
12376 | |
12377 | if (IsResultAmbiguous) |
12378 | return nullptr; |
12379 | |
12380 | if (Result) { |
12381 | SmallVector<const Expr *, 1> ResultAC; |
12382 | |
12383 | |
12384 | for (FunctionDecl *Skipped : AmbiguousDecls) |
12385 | if (!CheckMoreConstrained(Skipped, Result).hasValue()) |
12386 | return nullptr; |
12387 | Pair = DAP; |
12388 | } |
12389 | return Result; |
12390 | } |
12391 | |
12392 | |
12393 | |
12394 | |
12395 | |
12396 | |
12397 | |
12398 | |
12399 | bool Sema::resolveAndFixAddressOfSingleOverloadCandidate( |
12400 | ExprResult &SrcExpr, bool DoFunctionPointerConverion) { |
12401 | Expr *E = SrcExpr.get(); |
12402 | assert(E->getType() == Context.OverloadTy && "SrcExpr must be an overload"); |
12403 | |
12404 | DeclAccessPair DAP; |
12405 | FunctionDecl *Found = resolveAddressOfSingleOverloadCandidate(E, DAP); |
12406 | if (!Found || Found->isCPUDispatchMultiVersion() || |
12407 | Found->isCPUSpecificMultiVersion()) |
12408 | return false; |
12409 | |
12410 | |
12411 | |
12412 | |
12413 | DiagnoseUseOfDecl(Found, E->getExprLoc()); |
12414 | CheckAddressOfMemberAccess(E, DAP); |
12415 | Expr *Fixed = FixOverloadedFunctionReference(E, DAP, Found); |
12416 | if (DoFunctionPointerConverion && Fixed->getType()->isFunctionType()) |
12417 | SrcExpr = DefaultFunctionArrayConversion(Fixed, false); |
12418 | else |
12419 | SrcExpr = Fixed; |
12420 | return true; |
12421 | } |
12422 | |
12423 | |
12424 | |
12425 | |
12426 | |
12427 | |
12428 | |
12429 | |
12430 | |
12431 | |
12432 | |
12433 | FunctionDecl * |
12434 | Sema::ResolveSingleFunctionTemplateSpecialization(OverloadExpr *ovl, |
12435 | bool Complain, |
12436 | DeclAccessPair *FoundResult) { |
12437 | |
12438 | |
12439 | |
12440 | |
12441 | |
12442 | |
12443 | |
12444 | |
12445 | if (!ovl->hasExplicitTemplateArgs()) |
12446 | return nullptr; |
12447 | |
12448 | TemplateArgumentListInfo ExplicitTemplateArgs; |
12449 | ovl->copyTemplateArgumentsInto(ExplicitTemplateArgs); |
12450 | TemplateSpecCandidateSet FailedCandidates(ovl->getNameLoc()); |
12451 | |
12452 | |
12453 | |
12454 | FunctionDecl *Matched = nullptr; |
12455 | for (UnresolvedSetIterator I = ovl->decls_begin(), |
12456 | E = ovl->decls_end(); I != E; ++I) { |
12457 | |
12458 | |
12459 | |
12460 | |
12461 | |
12462 | |
12463 | FunctionTemplateDecl *FunctionTemplate |
12464 | = cast<FunctionTemplateDecl>((*I)->getUnderlyingDecl()); |
12465 | |
12466 | |
12467 | |
12468 | |
12469 | |
12470 | |
12471 | |
12472 | FunctionDecl *Specialization = nullptr; |
12473 | TemplateDeductionInfo Info(FailedCandidates.getLocation()); |
12474 | if (TemplateDeductionResult Result |
12475 | = DeduceTemplateArguments(FunctionTemplate, &ExplicitTemplateArgs, |
12476 | Specialization, Info, |
12477 | true)) { |
12478 | |
12479 | |
12480 | FailedCandidates.addCandidate() |
12481 | .set(I.getPair(), FunctionTemplate->getTemplatedDecl(), |
12482 | MakeDeductionFailureInfo(Context, Result, Info)); |
12483 | continue; |
12484 | } |
12485 | |
12486 | assert(Specialization && "no specialization and no error?"); |
12487 | |
12488 | |
12489 | if (Matched) { |
12490 | if (Complain) { |
12491 | Diag(ovl->getExprLoc(), diag::err_addr_ovl_ambiguous) |
12492 | << ovl->getName(); |
12493 | NoteAllOverloadCandidates(ovl); |
12494 | } |
12495 | return nullptr; |
12496 | } |
12497 | |
12498 | Matched = Specialization; |
12499 | if (FoundResult) *FoundResult = I.getPair(); |
12500 | } |
12501 | |
12502 | if (Matched && |
12503 | completeFunctionType(*this, Matched, ovl->getExprLoc(), Complain)) |
12504 | return nullptr; |
12505 | |
12506 | return Matched; |
12507 | } |
12508 | |
12509 | |
12510 | |
12511 | |
12512 | |
12513 | |
12514 | |
12515 | |
12516 | |
12517 | bool Sema::ResolveAndFixSingleFunctionTemplateSpecialization( |
12518 | ExprResult &SrcExpr, bool doFunctionPointerConverion, |
12519 | bool complain, SourceRange OpRangeForComplaining, |
12520 | QualType DestTypeForComplaining, |
12521 | unsigned DiagIDForComplaining) { |
12522 | assert(SrcExpr.get()->getType() == Context.OverloadTy); |
12523 | |
12524 | OverloadExpr::FindResult ovl = OverloadExpr::find(SrcExpr.get()); |
12525 | |
12526 | DeclAccessPair found; |
12527 | ExprResult SingleFunctionExpression; |
12528 | if (FunctionDecl *fn = ResolveSingleFunctionTemplateSpecialization( |
12529 | ovl.Expression, false, &found)) { |
12530 | if (DiagnoseUseOfDecl(fn, SrcExpr.get()->getBeginLoc())) { |
12531 | SrcExpr = ExprError(); |
12532 | return true; |
12533 | } |
12534 | |
12535 | |
12536 | |
12537 | |
12538 | |
12539 | if (!ovl.HasFormOfMemberPointer && |
12540 | isa<CXXMethodDecl>(fn) && |
12541 | cast<CXXMethodDecl>(fn)->isInstance()) { |
12542 | if (!complain) return false; |
12543 | |
12544 | Diag(ovl.Expression->getExprLoc(), |
12545 | diag::err_bound_member_function) |
12546 | << 0 << ovl.Expression->getSourceRange(); |
12547 | |
12548 | |
12549 | |
12550 | |
12551 | |
12552 | |
12553 | SrcExpr = ExprError(); |
12554 | return true; |
12555 | } |
12556 | |
12557 | |
12558 | SingleFunctionExpression = |
12559 | FixOverloadedFunctionReference(SrcExpr.get(), found, fn); |
12560 | |
12561 | |
12562 | if (doFunctionPointerConverion) { |
12563 | SingleFunctionExpression = |
12564 | DefaultFunctionArrayLvalueConversion(SingleFunctionExpression.get()); |
12565 | if (SingleFunctionExpression.isInvalid()) { |
12566 | SrcExpr = ExprError(); |
12567 | return true; |
12568 | } |
12569 | } |
12570 | } |
12571 | |
12572 | if (!SingleFunctionExpression.isUsable()) { |
12573 | if (complain) { |
12574 | Diag(OpRangeForComplaining.getBegin(), DiagIDForComplaining) |
12575 | << ovl.Expression->getName() |
12576 | << DestTypeForComplaining |
12577 | << OpRangeForComplaining |
12578 | << ovl.Expression->getQualifierLoc().getSourceRange(); |
12579 | NoteAllOverloadCandidates(SrcExpr.get()); |
12580 | |
12581 | SrcExpr = ExprError(); |
12582 | return true; |
12583 | } |
12584 | |
12585 | return false; |
12586 | } |
12587 | |
12588 | SrcExpr = SingleFunctionExpression; |
12589 | return true; |
12590 | } |
12591 | |
12592 | |
12593 | static void AddOverloadedCallCandidate(Sema &S, |
12594 | DeclAccessPair FoundDecl, |
12595 | TemplateArgumentListInfo *ExplicitTemplateArgs, |
12596 | ArrayRef<Expr *> Args, |
12597 | OverloadCandidateSet &CandidateSet, |
12598 | bool PartialOverloading, |
12599 | bool KnownValid) { |
12600 | NamedDecl *Callee = FoundDecl.getDecl(); |
12601 | if (isa<UsingShadowDecl>(Callee)) |
12602 | Callee = cast<UsingShadowDecl>(Callee)->getTargetDecl(); |
12603 | |
12604 | if (FunctionDecl *Func = dyn_cast<FunctionDecl>(Callee)) { |
12605 | if (ExplicitTemplateArgs) { |
12606 | assert(!KnownValid && "Explicit template arguments?"); |
12607 | return; |
12608 | } |
12609 | |
12610 | if (!dyn_cast<FunctionProtoType>(Func->getType()->getAs<FunctionType>())) |
12611 | return; |
12612 | |
12613 | S.AddOverloadCandidate(Func, FoundDecl, Args, CandidateSet, |
12614 | false, |
12615 | PartialOverloading); |
12616 | return; |
12617 | } |
12618 | |
12619 | if (FunctionTemplateDecl *FuncTemplate |
12620 | = dyn_cast<FunctionTemplateDecl>(Callee)) { |
12621 | S.AddTemplateOverloadCandidate(FuncTemplate, FoundDecl, |
12622 | ExplicitTemplateArgs, Args, CandidateSet, |
12623 | false, |
12624 | PartialOverloading); |
12625 | return; |
12626 | } |
12627 | |
12628 | assert(!KnownValid && "unhandled case in overloaded call candidate"); |
12629 | } |
12630 | |
12631 | |
12632 | |
12633 | void Sema::AddOverloadedCallCandidates(UnresolvedLookupExpr *ULE, |
12634 | ArrayRef<Expr *> Args, |
12635 | OverloadCandidateSet &CandidateSet, |
12636 | bool PartialOverloading) { |
12637 | |
12638 | #ifndef NDEBUG |
12639 | |
12640 | |
12641 | |
12642 | |
12643 | |
12644 | |
12645 | |
12646 | |
12647 | |
12648 | |
12649 | |
12650 | |
12651 | |
12652 | |
12653 | |
12654 | |
12655 | |
12656 | if (ULE->requiresADL()) { |
12657 | for (UnresolvedLookupExpr::decls_iterator I = ULE->decls_begin(), |
12658 | E = ULE->decls_end(); I != E; ++I) { |
12659 | assert(!(*I)->getDeclContext()->isRecord()); |
12660 | assert(isa<UsingShadowDecl>(*I) || |
12661 | !(*I)->getDeclContext()->isFunctionOrMethod()); |
12662 | assert((*I)->getUnderlyingDecl()->isFunctionOrFunctionTemplate()); |
12663 | } |
12664 | } |
12665 | #endif |
12666 | |
12667 | |
12668 | TemplateArgumentListInfo TABuffer; |
12669 | TemplateArgumentListInfo *ExplicitTemplateArgs = nullptr; |
12670 | if (ULE->hasExplicitTemplateArgs()) { |
12671 | ULE->copyTemplateArgumentsInto(TABuffer); |
12672 | ExplicitTemplateArgs = &TABuffer; |
12673 | } |
12674 | |
12675 | for (UnresolvedLookupExpr::decls_iterator I = ULE->decls_begin(), |
12676 | E = ULE->decls_end(); I != E; ++I) |
12677 | AddOverloadedCallCandidate(*this, I.getPair(), ExplicitTemplateArgs, Args, |
12678 | CandidateSet, PartialOverloading, |
12679 | true); |
12680 | |
12681 | if (ULE->requiresADL()) |
12682 | AddArgumentDependentLookupCandidates(ULE->getName(), ULE->getExprLoc(), |
12683 | Args, ExplicitTemplateArgs, |
12684 | CandidateSet, PartialOverloading); |
12685 | } |
12686 | |
12687 | |
12688 | |
12689 | void Sema::AddOverloadedCallCandidates( |
12690 | LookupResult &R, TemplateArgumentListInfo *ExplicitTemplateArgs, |
12691 | ArrayRef<Expr *> Args, OverloadCandidateSet &CandidateSet) { |
12692 | for (LookupResult::iterator I = R.begin(), E = R.end(); I != E; ++I) |
12693 | AddOverloadedCallCandidate(*this, I.getPair(), ExplicitTemplateArgs, Args, |
12694 | CandidateSet, false, false); |
12695 | } |
12696 | |
12697 | |
12698 | |
12699 | static bool canBeDeclaredInNamespace(const DeclarationName &Name) { |
12700 | switch (Name.getCXXOverloadedOperator()) { |
12701 | case OO_New: case OO_Array_New: |
12702 | case OO_Delete: case OO_Array_Delete: |
12703 | return false; |
12704 | |
12705 | default: |
12706 | return true; |
12707 | } |
12708 | } |
12709 | |
12710 | |
12711 | |
12712 | |
12713 | |
12714 | |
12715 | |
12716 | static bool DiagnoseTwoPhaseLookup( |
12717 | Sema &SemaRef, SourceLocation FnLoc, const CXXScopeSpec &SS, |
12718 | LookupResult &R, OverloadCandidateSet::CandidateSetKind CSK, |
12719 | TemplateArgumentListInfo *ExplicitTemplateArgs, ArrayRef<Expr *> Args, |
12720 | CXXRecordDecl **FoundInClass = nullptr) { |
12721 | if (!SemaRef.inTemplateInstantiation() || !SS.isEmpty()) |
12722 | return false; |
12723 | |
12724 | for (DeclContext *DC = SemaRef.CurContext; DC; DC = DC->getParent()) { |
12725 | if (DC->isTransparentContext()) |
12726 | continue; |
12727 | |
12728 | SemaRef.LookupQualifiedName(R, DC); |
12729 | |
12730 | if (!R.empty()) { |
12731 | R.suppressDiagnostics(); |
12732 | |
12733 | OverloadCandidateSet Candidates(FnLoc, CSK); |
12734 | SemaRef.AddOverloadedCallCandidates(R, ExplicitTemplateArgs, Args, |
12735 | Candidates); |
12736 | |
12737 | OverloadCandidateSet::iterator Best; |
12738 | OverloadingResult OR = |
12739 | Candidates.BestViableFunction(SemaRef, FnLoc, Best); |
12740 | |
12741 | if (auto *RD = dyn_cast<CXXRecordDecl>(DC)) { |
12742 | |
12743 | |
12744 | |
12745 | |
12746 | if (FoundInClass) { |
12747 | *FoundInClass = RD; |
12748 | if (OR == OR_Success) { |
12749 | R.clear(); |
12750 | R.addDecl(Best->FoundDecl.getDecl(), Best->FoundDecl.getAccess()); |
12751 | R.resolveKind(); |
12752 | } |
12753 | } |
12754 | return false; |
12755 | } |
12756 | |
12757 | if (OR != OR_Success) { |
12758 | |
12759 | return false; |
12760 | } |
12761 | |
12762 | |
12763 | |
12764 | Sema::AssociatedNamespaceSet AssociatedNamespaces; |
12765 | Sema::AssociatedClassSet AssociatedClasses; |
12766 | SemaRef.FindAssociatedClassesAndNamespaces(FnLoc, Args, |
12767 | AssociatedNamespaces, |
12768 | AssociatedClasses); |
12769 | Sema::AssociatedNamespaceSet SuggestedNamespaces; |
12770 | if (canBeDeclaredInNamespace(R.getLookupName())) { |
12771 | DeclContext *Std = SemaRef.getStdNamespace(); |
12772 | for (Sema::AssociatedNamespaceSet::iterator |
12773 | it = AssociatedNamespaces.begin(), |
12774 | end = AssociatedNamespaces.end(); it != end; ++it) { |
12775 | |
12776 | if (Std && Std->Encloses(*it)) |
12777 | continue; |
12778 | |
12779 | |
12780 | |
12781 | NamespaceDecl *NS = dyn_cast<NamespaceDecl>(*it); |
12782 | if (NS && |
12783 | NS->getQualifiedNameAsString().find("__") != std::string::npos) |
12784 | continue; |
12785 | |
12786 | SuggestedNamespaces.insert(*it); |
12787 | } |
12788 | } |
12789 | |
12790 | SemaRef.Diag(R.getNameLoc(), diag::err_not_found_by_two_phase_lookup) |
12791 | << R.getLookupName(); |
12792 | if (SuggestedNamespaces.empty()) { |
12793 | SemaRef.Diag(Best->Function->getLocation(), |
12794 | diag::note_not_found_by_two_phase_lookup) |
12795 | << R.getLookupName() << 0; |
12796 | } else if (SuggestedNamespaces.size() == 1) { |
12797 | SemaRef.Diag(Best->Function->getLocation(), |
12798 | diag::note_not_found_by_two_phase_lookup) |
12799 | << R.getLookupName() << 1 << *SuggestedNamespaces.begin(); |
12800 | } else { |
12801 | |
12802 | |
12803 | |
12804 | SemaRef.Diag(Best->Function->getLocation(), |
12805 | diag::note_not_found_by_two_phase_lookup) |
12806 | << R.getLookupName() << 2; |
12807 | } |
12808 | |
12809 | |
12810 | return true; |
12811 | } |
12812 | |
12813 | R.clear(); |
12814 | } |
12815 | |
12816 | return false; |
12817 | } |
12818 | |
12819 | |
12820 | |
12821 | |
12822 | |
12823 | |
12824 | static bool |
12825 | DiagnoseTwoPhaseOperatorLookup(Sema &SemaRef, OverloadedOperatorKind Op, |
12826 | SourceLocation OpLoc, |
12827 | ArrayRef<Expr *> Args) { |
12828 | DeclarationName OpName = |
12829 | SemaRef.Context.DeclarationNames.getCXXOperatorName(Op); |
12830 | LookupResult R(SemaRef, OpName, OpLoc, Sema::LookupOperatorName); |
12831 | return DiagnoseTwoPhaseLookup(SemaRef, OpLoc, CXXScopeSpec(), R, |
12832 | OverloadCandidateSet::CSK_Operator, |
12833 | nullptr, Args); |
12834 | } |
12835 | |
12836 | namespace { |
12837 | class BuildRecoveryCallExprRAII { |
12838 | Sema &SemaRef; |
12839 | public: |
12840 | BuildRecoveryCallExprRAII(Sema &S) : SemaRef(S) { |
12841 | assert(SemaRef.IsBuildingRecoveryCallExpr == false); |
12842 | SemaRef.IsBuildingRecoveryCallExpr = true; |
12843 | } |
12844 | |
12845 | ~BuildRecoveryCallExprRAII() { |
12846 | SemaRef.IsBuildingRecoveryCallExpr = false; |
12847 | } |
12848 | }; |
12849 | |
12850 | } |
12851 | |
12852 | |
12853 | |
12854 | |
12855 | |
12856 | |
12857 | |
12858 | |
12859 | static ExprResult |
12860 | BuildRecoveryCallExpr(Sema &SemaRef, Scope *S, Expr *Fn, |
12861 | UnresolvedLookupExpr *ULE, |
12862 | SourceLocation LParenLoc, |
12863 | MutableArrayRef<Expr *> Args, |
12864 | SourceLocation RParenLoc, |
12865 | bool EmptyLookup, bool AllowTypoCorrection) { |
12866 | |
12867 | |
12868 | |
12869 | |
12870 | |
12871 | if (SemaRef.IsBuildingRecoveryCallExpr) |
12872 | return ExprResult(); |
12873 | BuildRecoveryCallExprRAII RCE(SemaRef); |
12874 | |
12875 | CXXScopeSpec SS; |
12876 | SS.Adopt(ULE->getQualifierLoc()); |
12877 | SourceLocation TemplateKWLoc = ULE->getTemplateKeywordLoc(); |
12878 | |
12879 | TemplateArgumentListInfo TABuffer; |
12880 | TemplateArgumentListInfo *ExplicitTemplateArgs = nullptr; |
12881 | if (ULE->hasExplicitTemplateArgs()) { |
12882 | ULE->copyTemplateArgumentsInto(TABuffer); |
12883 | ExplicitTemplateArgs = &TABuffer; |
12884 | } |
12885 | |
12886 | LookupResult R(SemaRef, ULE->getName(), ULE->getNameLoc(), |
12887 | Sema::LookupOrdinaryName); |
12888 | CXXRecordDecl *FoundInClass = nullptr; |
12889 | if (DiagnoseTwoPhaseLookup(SemaRef, Fn->getExprLoc(), SS, R, |
12890 | OverloadCandidateSet::CSK_Normal, |
12891 | ExplicitTemplateArgs, Args, &FoundInClass)) { |
12892 | |
12893 | } else if (EmptyLookup) { |
12894 | |
12895 | R.clear(); |
12896 | NoTypoCorrectionCCC NoTypoValidator{}; |
12897 | FunctionCallFilterCCC FunctionCallValidator(SemaRef, Args.size(), |
12898 | ExplicitTemplateArgs != nullptr, |
12899 | dyn_cast<MemberExpr>(Fn)); |
12900 | CorrectionCandidateCallback &Validator = |
12901 | AllowTypoCorrection |
12902 | ? static_cast<CorrectionCandidateCallback &>(FunctionCallValidator) |
12903 | : static_cast<CorrectionCandidateCallback &>(NoTypoValidator); |
12904 | if (SemaRef.DiagnoseEmptyLookup(S, SS, R, Validator, ExplicitTemplateArgs, |
12905 | Args)) |
12906 | return ExprError(); |
12907 | } else if (FoundInClass && SemaRef.getLangOpts().MSVCCompat) { |
12908 | |
12909 | |
12910 | |
12911 | |
12912 | if (SemaRef.DiagnoseDependentMemberLookup(R)) |
12913 | return ExprError(); |
12914 | } else { |
12915 | |
12916 | |
12917 | return ExprResult(); |
12918 | } |
12919 | |
12920 | |
12921 | |
12922 | assert(!R.empty() && "lookup results empty despite recovery"); |
12923 | |
12924 | |
12925 | if (R.isAmbiguous()) { |
12926 | R.suppressDiagnostics(); |
12927 | return ExprError(); |
12928 | } |
12929 | |
12930 | |
12931 | |
12932 | ExprResult NewFn = ExprError(); |
12933 | if ((*R.begin())->isCXXClassMember()) |
12934 | NewFn = SemaRef.BuildPossibleImplicitMemberExpr(SS, TemplateKWLoc, R, |
12935 | ExplicitTemplateArgs, S); |
12936 | else if (ExplicitTemplateArgs || TemplateKWLoc.isValid()) |
12937 | NewFn = SemaRef.BuildTemplateIdExpr(SS, TemplateKWLoc, R, false, |
12938 | ExplicitTemplateArgs); |
12939 | else |
12940 | NewFn = SemaRef.BuildDeclarationNameExpr(SS, R, false); |
12941 | |
12942 | if (NewFn.isInvalid()) |
12943 | return ExprError(); |
12944 | |
12945 | |
12946 | |
12947 | |
12948 | return SemaRef.BuildCallExpr( nullptr, NewFn.get(), LParenLoc, |
12949 | MultiExprArg(Args.data(), Args.size()), |
12950 | RParenLoc); |
12951 | } |
12952 | |
12953 | |
12954 | |
12955 | |
12956 | bool Sema::buildOverloadedCallSet(Scope *S, Expr *Fn, |
12957 | UnresolvedLookupExpr *ULE, |
12958 | MultiExprArg Args, |
12959 | SourceLocation RParenLoc, |
12960 | OverloadCandidateSet *CandidateSet, |
12961 | ExprResult *Result) { |
12962 | #ifndef NDEBUG |
12963 | if (ULE->requiresADL()) { |
12964 | |
12965 | assert(!ULE->getQualifier() && "qualified name with ADL"); |
12966 | |
12967 | |
12968 | |
12969 | FunctionDecl *F; |
12970 | if (ULE->decls_begin() != ULE->decls_end() && |
12971 | ULE->decls_begin() + 1 == ULE->decls_end() && |
12972 | (F = dyn_cast<FunctionDecl>(*ULE->decls_begin())) && |
12973 | F->getBuiltinID() && F->isImplicit()) |
12974 | llvm_unreachable("performing ADL for builtin"); |
12975 | |
12976 | |
12977 | assert(getLangOpts().CPlusPlus && "ADL enabled in C"); |
12978 | } |
12979 | #endif |
12980 | |
12981 | UnbridgedCastsSet UnbridgedCasts; |
12982 | if (checkArgPlaceholdersForOverload(*this, Args, UnbridgedCasts)) { |
12983 | *Result = ExprError(); |
12984 | return true; |
12985 | } |
12986 | |
12987 | |
12988 | |
12989 | AddOverloadedCallCandidates(ULE, Args, *CandidateSet); |
12990 | |
12991 | if (getLangOpts().MSVCCompat && |
12992 | CurContext->isDependentContext() && !isSFINAEContext() && |
12993 | (isa<FunctionDecl>(CurContext) || isa<CXXRecordDecl>(CurContext))) { |
12994 | |
12995 | OverloadCandidateSet::iterator Best; |
12996 | if (CandidateSet->empty() || |
12997 | CandidateSet->BestViableFunction(*this, Fn->getBeginLoc(), Best) == |
12998 | OR_No_Viable_Function) { |
12999 | |
13000 | |
13001 | |
13002 | |
13003 | CallExpr *CE = |
13004 | CallExpr::Create(Context, Fn, Args, Context.DependentTy, VK_PRValue, |
13005 | RParenLoc, CurFPFeatureOverrides()); |
13006 | CE->markDependentForPostponedNameLookup(); |
13007 | *Result = CE; |
13008 | return true; |
13009 | } |
13010 | } |
13011 | |
13012 | if (CandidateSet->empty()) |
13013 | return false; |
13014 | |
13015 | UnbridgedCasts.restore(); |
13016 | return false; |
13017 | } |
13018 | |
13019 | |
13020 | static QualType chooseRecoveryType(OverloadCandidateSet &CS, |
13021 | OverloadCandidateSet::iterator *Best) { |
13022 | llvm::Optional<QualType> Result; |
13023 | |
13024 | auto ConsiderCandidate = [&](const OverloadCandidate &Candidate) { |
13025 | if (!Candidate.Function) |
13026 | return; |
13027 | if (Candidate.Function->isInvalidDecl()) |
13028 | return; |
13029 | QualType T = Candidate.Function->getReturnType(); |
13030 | if (T.isNull()) |
13031 | return; |
13032 | if (!Result) |
13033 | Result = T; |
13034 | else if (Result != T) |
13035 | Result = QualType(); |
13036 | }; |
13037 | |
13038 | |
13039 | |
13040 | |
13041 | |
13042 | if (Best && *Best != CS.end()) |
13043 | ConsiderCandidate(**Best); |
13044 | |
13045 | if (!Result) |
13046 | for (const auto &C : CS) |
13047 | if (C.Viable) |
13048 | ConsiderCandidate(C); |
13049 | |
13050 | if (!Result) |
13051 | for (const auto &C : CS) |
13052 | ConsiderCandidate(C); |
13053 | |
13054 | if (!Result) |
13055 | return QualType(); |
13056 | auto Value = Result.getValue(); |
13057 | if (Value.isNull() || Value->isUndeducedType()) |
13058 | return QualType(); |
13059 | return Value; |
13060 | } |
13061 | |
13062 | |
13063 | |
13064 | |
13065 | static ExprResult FinishOverloadedCallExpr(Sema &SemaRef, Scope *S, Expr *Fn, |
13066 | UnresolvedLookupExpr *ULE, |
13067 | SourceLocation LParenLoc, |
13068 | MultiExprArg Args, |
13069 | SourceLocation RParenLoc, |
13070 | Expr *ExecConfig, |
13071 | OverloadCandidateSet *CandidateSet, |
13072 | OverloadCandidateSet::iterator *Best, |
13073 | OverloadingResult OverloadResult, |
13074 | bool AllowTypoCorrection) { |
13075 | switch (OverloadResult) { |
13076 | case OR_Success: { |
13077 | FunctionDecl *FDecl = (*Best)->Function; |
13078 | SemaRef.CheckUnresolvedLookupAccess(ULE, (*Best)->FoundDecl); |
13079 | if (SemaRef.DiagnoseUseOfDecl(FDecl, ULE->getNameLoc())) |
13080 | return ExprError(); |
13081 | Fn = SemaRef.FixOverloadedFunctionReference(Fn, (*Best)->FoundDecl, FDecl); |
13082 | return SemaRef.BuildResolvedCallExpr(Fn, FDecl, LParenLoc, Args, RParenLoc, |
13083 | ExecConfig, false, |
13084 | (*Best)->IsADLCandidate); |
13085 | } |
13086 | |
13087 | case OR_No_Viable_Function: { |
13088 | |
13089 | |
13090 | ExprResult Recovery = BuildRecoveryCallExpr(SemaRef, S, Fn, ULE, LParenLoc, |
13091 | Args, RParenLoc, |
13092 | CandidateSet->empty(), |
13093 | AllowTypoCorrection); |
13094 | if (Recovery.isInvalid() || Recovery.isUsable()) |
13095 | return Recovery; |
13096 | |
13097 | |
13098 | |
13099 | |
13100 | for (const Expr *Arg : Args) { |
13101 | if (!Arg->getType()->isFunctionType()) |
13102 | continue; |
13103 | if (auto *DRE = dyn_cast<DeclRefExpr>(Arg->IgnoreParenImpCasts())) { |
13104 | auto *FD = dyn_cast<FunctionDecl>(DRE->getDecl()); |
13105 | if (FD && |
13106 | !SemaRef.checkAddressOfFunctionIsAvailable(FD, true, |
13107 | Arg->getExprLoc())) |
13108 | return ExprError(); |
13109 | } |
13110 | } |
13111 | |
13112 | CandidateSet->NoteCandidates( |
13113 | PartialDiagnosticAt( |
13114 | Fn->getBeginLoc(), |
13115 | SemaRef.PDiag(diag::err_ovl_no_viable_function_in_call) |
13116 | << ULE->getName() << Fn->getSourceRange()), |
13117 | SemaRef, OCD_AllCandidates, Args); |
13118 | break; |
13119 | } |
13120 | |
13121 | case OR_Ambiguous: |
13122 | CandidateSet->NoteCandidates( |
13123 | PartialDiagnosticAt(Fn->getBeginLoc(), |
13124 | SemaRef.PDiag(diag::err_ovl_ambiguous_call) |
13125 | << ULE->getName() << Fn->getSourceRange()), |
13126 | SemaRef, OCD_AmbiguousCandidates, Args); |
13127 | break; |
13128 | |
13129 | case OR_Deleted: { |
13130 | CandidateSet->NoteCandidates( |
13131 | PartialDiagnosticAt(Fn->getBeginLoc(), |
13132 | SemaRef.PDiag(diag::err_ovl_deleted_call) |
13133 | << ULE->getName() << Fn->getSourceRange()), |
13134 | SemaRef, OCD_AllCandidates, Args); |
13135 | |
13136 | |
13137 | |
13138 | FunctionDecl *FDecl = (*Best)->Function; |
13139 | Fn = SemaRef.FixOverloadedFunctionReference(Fn, (*Best)->FoundDecl, FDecl); |
13140 | return SemaRef.BuildResolvedCallExpr(Fn, FDecl, LParenLoc, Args, RParenLoc, |
13141 | ExecConfig, false, |
13142 | (*Best)->IsADLCandidate); |
13143 | } |
13144 | } |
13145 | |
13146 | |
13147 | SmallVector<Expr *, 8> SubExprs = {Fn}; |
13148 | SubExprs.append(Args.begin(), Args.end()); |
13149 | return SemaRef.CreateRecoveryExpr(Fn->getBeginLoc(), RParenLoc, SubExprs, |
13150 | chooseRecoveryType(*CandidateSet, Best)); |
13151 | } |
13152 | |
13153 | static void markUnaddressableCandidatesUnviable(Sema &S, |
13154 | OverloadCandidateSet &CS) { |
13155 | for (auto I = CS.begin(), E = CS.end(); I != E; ++I) { |
13156 | if (I->Viable && |
13157 | !S.checkAddressOfFunctionIsAvailable(I->Function, false)) { |
13158 | I->Viable = false; |
13159 | I->FailureKind = ovl_fail_addr_not_available; |
13160 | } |
13161 | } |
13162 | } |
13163 | |
13164 | |
13165 | |
13166 | |
13167 | |
13168 | |
13169 | |
13170 | ExprResult Sema::BuildOverloadedCallExpr(Scope *S, Expr *Fn, |
13171 | UnresolvedLookupExpr *ULE, |
13172 | SourceLocation LParenLoc, |
13173 | MultiExprArg Args, |
13174 | SourceLocation RParenLoc, |
13175 | Expr *ExecConfig, |
13176 | bool AllowTypoCorrection, |
13177 | bool CalleesAddressIsTaken) { |
13178 | OverloadCandidateSet CandidateSet(Fn->getExprLoc(), |
13179 | OverloadCandidateSet::CSK_Normal); |
13180 | ExprResult result; |
13181 | |
13182 | if (buildOverloadedCallSet(S, Fn, ULE, Args, LParenLoc, &CandidateSet, |
13183 | &result)) |
13184 | return result; |
13185 | |
13186 | |
13187 | |
13188 | if (CalleesAddressIsTaken) |
13189 | markUnaddressableCandidatesUnviable(*this, CandidateSet); |
13190 | |
13191 | OverloadCandidateSet::iterator Best; |
13192 | OverloadingResult OverloadResult = |
13193 | CandidateSet.BestViableFunction(*this, Fn->getBeginLoc(), Best); |
13194 | |
13195 | return FinishOverloadedCallExpr(*this, S, Fn, ULE, LParenLoc, Args, RParenLoc, |
13196 | ExecConfig, &CandidateSet, &Best, |
13197 | OverloadResult, AllowTypoCorrection); |
13198 | } |
13199 | |
13200 | static bool IsOverloaded(const UnresolvedSetImpl &Functions) { |
13201 | return Functions.size() > 1 || |
13202 | (Functions.size() == 1 && |
13203 | isa<FunctionTemplateDecl>((*Functions.begin())->getUnderlyingDecl())); |
13204 | } |
13205 | |
13206 | ExprResult Sema::CreateUnresolvedLookupExpr(CXXRecordDecl *NamingClass, |
13207 | NestedNameSpecifierLoc NNSLoc, |
13208 | DeclarationNameInfo DNI, |
13209 | const UnresolvedSetImpl &Fns, |
13210 | bool PerformADL) { |
13211 | return UnresolvedLookupExpr::Create(Context, NamingClass, NNSLoc, DNI, |
13212 | PerformADL, IsOverloaded(Fns), |
13213 | Fns.begin(), Fns.end()); |
13214 | } |
13215 | |
13216 | |
13217 | |
13218 | |
13219 | |
13220 | |
13221 | |
13222 | |
13223 | |
13224 | |
13225 | |
13226 | |
13227 | |
13228 | |
13229 | |
13230 | |
13231 | ExprResult |
13232 | Sema::CreateOverloadedUnaryOp(SourceLocation OpLoc, UnaryOperatorKind Opc, |
13233 | const UnresolvedSetImpl &Fns, |
13234 | Expr *Input, bool PerformADL) { |
13235 | OverloadedOperatorKind Op = UnaryOperator::getOverloadedOperator(Opc); |
13236 | assert(Op != OO_None && "Invalid opcode for overloaded unary operator"); |
13237 | DeclarationName OpName = Context.DeclarationNames.getCXXOperatorName(Op); |
13238 | |
13239 | DeclarationNameInfo OpNameInfo(OpName, OpLoc); |
13240 | |
13241 | if (checkPlaceholderForOverload(*this, Input)) |
13242 | return ExprError(); |
13243 | |
13244 | Expr *Args[2] = { Input, nullptr }; |
13245 | unsigned NumArgs = 1; |
13246 | |
13247 | |
13248 | |
13249 | |
13250 | if (Opc == UO_PostInc || Opc == UO_PostDec) { |
13251 | llvm::APSInt Zero(Context.getTypeSize(Context.IntTy), false); |
13252 | Args[1] = IntegerLiteral::Create(Context, Zero, Context.IntTy, |
13253 | SourceLocation()); |
13254 | NumArgs = 2; |
13255 | } |
13256 | |
13257 | ArrayRef<Expr *> ArgsArray(Args, NumArgs); |
13258 | |
13259 | if (Input->isTypeDependent()) { |
13260 | if (Fns.empty()) |
13261 | return UnaryOperator::Create(Context, Input, Opc, Context.DependentTy, |
13262 | VK_PRValue, OK_Ordinary, OpLoc, false, |
13263 | CurFPFeatureOverrides()); |
13264 | |
13265 | CXXRecordDecl *NamingClass = nullptr; |
13266 | ExprResult Fn = CreateUnresolvedLookupExpr( |
13267 | NamingClass, NestedNameSpecifierLoc(), OpNameInfo, Fns); |
13268 | if (Fn.isInvalid()) |
13269 | return ExprError(); |
13270 | return CXXOperatorCallExpr::Create(Context, Op, Fn.get(), ArgsArray, |
13271 | Context.DependentTy, VK_PRValue, OpLoc, |
13272 | CurFPFeatureOverrides()); |
13273 | } |
13274 | |
13275 | |
13276 | OverloadCandidateSet CandidateSet(OpLoc, OverloadCandidateSet::CSK_Operator); |
13277 | |
13278 | |
13279 | AddNonMemberOperatorCandidates(Fns, ArgsArray, CandidateSet); |
13280 | |
13281 | |
13282 | AddMemberOperatorCandidates(Op, OpLoc, ArgsArray, CandidateSet); |
13283 | |
13284 | |
13285 | if (PerformADL) { |
13286 | AddArgumentDependentLookupCandidates(OpName, OpLoc, ArgsArray, |
13287 | nullptr, |
13288 | CandidateSet); |
13289 | } |
13290 | |
13291 | |
13292 | AddBuiltinOperatorCandidates(Op, OpLoc, ArgsArray, CandidateSet); |
13293 | |
13294 | bool HadMultipleCandidates = (CandidateSet.size() > 1); |
13295 | |
13296 | |
13297 | OverloadCandidateSet::iterator Best; |
13298 | switch (CandidateSet.BestViableFunction(*this, OpLoc, Best)) { |
13299 | case OR_Success: { |
13300 | |
13301 | FunctionDecl *FnDecl = Best->Function; |
13302 | |
13303 | if (FnDecl) { |
13304 | Expr *Base = nullptr; |
13305 | |
13306 | |
13307 | |
13308 | |
13309 | if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(FnDecl)) { |
13310 | CheckMemberOperatorAccess(OpLoc, Args[0], nullptr, Best->FoundDecl); |
13311 | |
13312 | ExprResult InputRes = |
13313 | PerformObjectArgumentInitialization(Input, nullptr, |
13314 | Best->FoundDecl, Method); |
13315 | if (InputRes.isInvalid()) |
13316 | return ExprError(); |
13317 | Base = Input = InputRes.get(); |
13318 | } else { |
13319 | |
13320 | ExprResult InputInit |
13321 | = PerformCopyInitialization(InitializedEntity::InitializeParameter( |
13322 | Context, |
13323 | FnDecl->getParamDecl(0)), |
13324 | SourceLocation(), |
13325 | Input); |
13326 | if (InputInit.isInvalid()) |
13327 | return ExprError(); |
13328 | Input = InputInit.get(); |
13329 | } |
13330 | |
13331 | |
13332 | ExprResult FnExpr = CreateFunctionRefExpr(*this, FnDecl, Best->FoundDecl, |
13333 | Base, HadMultipleCandidates, |
13334 | OpLoc); |
13335 | if (FnExpr.isInvalid()) |
13336 | return ExprError(); |
13337 | |
13338 | |
13339 | QualType ResultTy = FnDecl->getReturnType(); |
13340 | ExprValueKind VK = Expr::getValueKindForType(ResultTy); |
13341 | ResultTy = ResultTy.getNonLValueExprType(Context); |
13342 | |
13343 | Args[0] = Input; |
13344 | CallExpr *TheCall = CXXOperatorCallExpr::Create( |
13345 | Context, Op, FnExpr.get(), ArgsArray, ResultTy, VK, OpLoc, |
13346 | CurFPFeatureOverrides(), Best->IsADLCandidate); |
13347 | |
13348 | if (CheckCallReturnType(FnDecl->getReturnType(), OpLoc, TheCall, FnDecl)) |
13349 | return ExprError(); |
13350 | |
13351 | if (CheckFunctionCall(FnDecl, TheCall, |
13352 | FnDecl->getType()->castAs<FunctionProtoType>())) |
13353 | return ExprError(); |
13354 | return CheckForImmediateInvocation(MaybeBindToTemporary(TheCall), FnDecl); |
13355 | } else { |
13356 | |
13357 | |
13358 | |
13359 | ExprResult InputRes = PerformImplicitConversion( |
13360 | Input, Best->BuiltinParamTypes[0], Best->Conversions[0], AA_Passing, |
13361 | CCK_ForBuiltinOverloadedOp); |
13362 | if (InputRes.isInvalid()) |
13363 | return ExprError(); |
13364 | Input = InputRes.get(); |
13365 | break; |
13366 | } |
13367 | } |
13368 | |
13369 | case OR_No_Viable_Function: |
13370 | |
13371 | |
13372 | |
13373 | if (DiagnoseTwoPhaseOperatorLookup(*this, Op, OpLoc, ArgsArray)) |
13374 | |
13375 | return ExprError(); |
13376 | |
13377 | |
13378 | |
13379 | break; |
13380 | |
13381 | case OR_Ambiguous: |
13382 | CandidateSet.NoteCandidates( |
13383 | PartialDiagnosticAt(OpLoc, |
13384 | PDiag(diag::err_ovl_ambiguous_oper_unary) |
13385 | << UnaryOperator::getOpcodeStr(Opc) |
13386 | << Input->getType() << Input->getSourceRange()), |
13387 | *this, OCD_AmbiguousCandidates, ArgsArray, |
13388 | UnaryOperator::getOpcodeStr(Opc), OpLoc); |
13389 | return ExprError(); |
13390 | |
13391 | case OR_Deleted: |
13392 | CandidateSet.NoteCandidates( |
13393 | PartialDiagnosticAt(OpLoc, PDiag(diag::err_ovl_deleted_oper) |
13394 | << UnaryOperator::getOpcodeStr(Opc) |
13395 | << Input->getSourceRange()), |
13396 | *this, OCD_AllCandidates, ArgsArray, UnaryOperator::getOpcodeStr(Opc), |
13397 | OpLoc); |
13398 | return ExprError(); |
13399 | } |
13400 | |
13401 | |
13402 | |
13403 | |
13404 | return CreateBuiltinUnaryOp(OpLoc, Opc, Input); |
13405 | } |
13406 | |
13407 | |
13408 | void Sema::LookupOverloadedBinOp(OverloadCandidateSet &CandidateSet, |
13409 | OverloadedOperatorKind Op, |
13410 | const UnresolvedSetImpl &Fns, |
13411 | ArrayRef<Expr *> Args, bool PerformADL) { |
13412 | SourceLocation OpLoc = CandidateSet.getLocation(); |
13413 | |
13414 | OverloadedOperatorKind ExtraOp = |
13415 | CandidateSet.getRewriteInfo().AllowRewrittenCandidates |
13416 | ? getRewrittenOverloadedOperator(Op) |
13417 | : OO_None; |
13418 | |
13419 | |
13420 | |
13421 | AddNonMemberOperatorCandidates(Fns, Args, CandidateSet); |
13422 | |
13423 | |
13424 | AddMemberOperatorCandidates(Op, OpLoc, Args, CandidateSet); |
13425 | if (CandidateSet.getRewriteInfo().shouldAddReversed(Op)) |
13426 | AddMemberOperatorCandidates(Op, OpLoc, {Args[1], Args[0]}, CandidateSet, |
13427 | OverloadCandidateParamOrder::Reversed); |
13428 | |
13429 | |
13430 | if (ExtraOp) { |
13431 | AddMemberOperatorCandidates(ExtraOp, OpLoc, Args, CandidateSet); |
13432 | if (CandidateSet.getRewriteInfo().shouldAddReversed(ExtraOp)) |
13433 | AddMemberOperatorCandidates(ExtraOp, OpLoc, {Args[1], Args[0]}, |
13434 | CandidateSet, |
13435 | OverloadCandidateParamOrder::Reversed); |
13436 | } |
13437 | |
13438 | |
13439 | |
13440 | |
13441 | if (Op != OO_Equal && PerformADL) { |
13442 | DeclarationName OpName = Context.DeclarationNames.getCXXOperatorName(Op); |
13443 | AddArgumentDependentLookupCandidates(OpName, OpLoc, Args, |
13444 | nullptr, |
13445 | CandidateSet); |
13446 | if (ExtraOp) { |
13447 | DeclarationName ExtraOpName = |
13448 | Context.DeclarationNames.getCXXOperatorName(ExtraOp); |
13449 | AddArgumentDependentLookupCandidates(ExtraOpName, OpLoc, Args, |
13450 | nullptr, |
13451 | CandidateSet); |
13452 | } |
13453 | } |
13454 | |
13455 | |
13456 | |
13457 | |
13458 | |
13459 | |
13460 | |
13461 | |
13462 | |
13463 | |
13464 | |
13465 | |
13466 | |
13467 | |
13468 | AddBuiltinOperatorCandidates(Op, OpLoc, Args, CandidateSet); |
13469 | } |
13470 | |
13471 | |
13472 | |
13473 | |
13474 | |
13475 | |
13476 | |
13477 | |
13478 | |
13479 | |
13480 | |
13481 | |
13482 | |
13483 | |
13484 | |
13485 | |
13486 | |
13487 | |
13488 | |
13489 | |
13490 | |
13491 | |
13492 | |
13493 | |
13494 | ExprResult Sema::CreateOverloadedBinOp(SourceLocation OpLoc, |
13495 | BinaryOperatorKind Opc, |
13496 | const UnresolvedSetImpl &Fns, Expr *LHS, |
13497 | Expr *RHS, bool PerformADL, |
13498 | bool AllowRewrittenCandidates, |
13499 | FunctionDecl *DefaultedFn) { |
13500 | Expr *Args[2] = { LHS, RHS }; |
13501 | LHS=RHS=nullptr; |
13502 | |
13503 | if (!getLangOpts().CPlusPlus20) |
13504 | AllowRewrittenCandidates = false; |
13505 | |
13506 | OverloadedOperatorKind Op = BinaryOperator::getOverloadedOperator(Opc); |
13507 | |
13508 | |
13509 | |
13510 | if (Args[0]->isTypeDependent() || Args[1]->isTypeDependent()) { |
13511 | if (Fns.empty()) { |
13512 | |
13513 | |
13514 | if (BinaryOperator::isCompoundAssignmentOp(Opc)) |
13515 | return CompoundAssignOperator::Create( |
13516 | Context, Args[0], Args[1], Opc, Context.DependentTy, VK_LValue, |
13517 | OK_Ordinary, OpLoc, CurFPFeatureOverrides(), Context.DependentTy, |
13518 | Context.DependentTy); |
13519 | return BinaryOperator::Create( |
13520 | Context, Args[0], Args[1], Opc, Context.DependentTy, VK_PRValue, |
13521 | OK_Ordinary, OpLoc, CurFPFeatureOverrides()); |
13522 | } |
13523 | |
13524 | |
13525 | CXXRecordDecl *NamingClass = nullptr; |
13526 | |
13527 | DeclarationName OpName = Context.DeclarationNames.getCXXOperatorName(Op); |
13528 | DeclarationNameInfo OpNameInfo(OpName, OpLoc); |
13529 | ExprResult Fn = CreateUnresolvedLookupExpr( |
13530 | NamingClass, NestedNameSpecifierLoc(), OpNameInfo, Fns, PerformADL); |
13531 | if (Fn.isInvalid()) |
13532 | return ExprError(); |
13533 | return CXXOperatorCallExpr::Create(Context, Op, Fn.get(), Args, |
13534 | Context.DependentTy, VK_PRValue, OpLoc, |
13535 | CurFPFeatureOverrides()); |
13536 | } |
13537 | |
13538 | |
13539 | if (checkPlaceholderForOverload(*this, Args[1])) |
13540 | return ExprError(); |
13541 | |
13542 | |
13543 | |
13544 | assert(Args[0]->getObjectKind() != OK_ObjCProperty); |
13545 | if (checkPlaceholderForOverload(*this, Args[0])) |
13546 | return ExprError(); |
13547 | |
13548 | |
13549 | |
13550 | |
13551 | |
13552 | |
13553 | |
13554 | if (Opc == BO_Assign && !Args[0]->getType()->isOverloadableType()) |
13555 | return CreateBuiltinBinOp(OpLoc, Opc, Args[0], Args[1]); |
13556 | |
13557 | |
13558 | |
13559 | if (Opc == BO_PtrMemD) |
13560 | return CreateBuiltinBinOp(OpLoc, Opc, Args[0], Args[1]); |
13561 | |
13562 | |
13563 | OverloadCandidateSet CandidateSet( |
13564 | OpLoc, OverloadCandidateSet::CSK_Operator, |
13565 | OverloadCandidateSet::OperatorRewriteInfo(Op, AllowRewrittenCandidates)); |
13566 | if (DefaultedFn) |
13567 | CandidateSet.exclude(DefaultedFn); |
13568 | LookupOverloadedBinOp(CandidateSet, Op, Fns, Args, PerformADL); |
13569 | |
13570 | bool HadMultipleCandidates = (CandidateSet.size() > 1); |
13571 | |
13572 | |
13573 | OverloadCandidateSet::iterator Best; |
13574 | switch (CandidateSet.BestViableFunction(*this, OpLoc, Best)) { |
13575 | case OR_Success: { |
13576 | |
13577 | FunctionDecl *FnDecl = Best->Function; |
13578 | |
13579 | bool IsReversed = Best->isReversed(); |
13580 | if (IsReversed) |
13581 | std::swap(Args[0], Args[1]); |
13582 | |
13583 | if (FnDecl) { |
13584 | Expr *Base = nullptr; |
13585 | |
13586 | |
13587 | |
13588 | OverloadedOperatorKind ChosenOp = |
13589 | FnDecl->getDeclName().getCXXOverloadedOperator(); |
13590 | |
13591 | |
13592 | |
13593 | |
13594 | if (Best->RewriteKind && ChosenOp == OO_EqualEqual && |
13595 | !FnDecl->getReturnType()->isBooleanType()) { |
13596 | bool IsExtension = |
13597 | FnDecl->getReturnType()->isIntegralOrUnscopedEnumerationType(); |
13598 | Diag(OpLoc, IsExtension ? diag::ext_ovl_rewrite_equalequal_not_bool |
13599 | : diag::err_ovl_rewrite_equalequal_not_bool) |
13600 | << FnDecl->getReturnType() << BinaryOperator::getOpcodeStr(Opc) |
13601 | << Args[0]->getSourceRange() << Args[1]->getSourceRange(); |
13602 | Diag(FnDecl->getLocation(), diag::note_declared_at); |
13603 | if (!IsExtension) |
13604 | return ExprError(); |
13605 | } |
13606 | |
13607 | if (AllowRewrittenCandidates && !IsReversed && |
13608 | CandidateSet.getRewriteInfo().isReversible()) { |
13609 | |
13610 | |
13611 | |
13612 | |
13613 | llvm::SmallVector<FunctionDecl*, 4> AmbiguousWith; |
13614 | for (OverloadCandidate &Cand : CandidateSet) { |
13615 | if (Cand.Viable && Cand.Function && Cand.isReversed() && |
13616 | haveSameParameterTypes(Context, Cand.Function, FnDecl, 2)) { |
13617 | for (unsigned ArgIdx = 0; ArgIdx < 2; ++ArgIdx) { |
13618 | if (CompareImplicitConversionSequences( |
13619 | *this, OpLoc, Cand.Conversions[ArgIdx], |
13620 | Best->Conversions[ArgIdx]) == |
13621 | ImplicitConversionSequence::Better) { |
13622 | AmbiguousWith.push_back(Cand.Function); |
13623 | break; |
13624 | } |
13625 | } |
13626 | } |
13627 | } |
13628 | |
13629 | if (!AmbiguousWith.empty()) { |
13630 | bool AmbiguousWithSelf = |
13631 | AmbiguousWith.size() == 1 && |
13632 | declaresSameEntity(AmbiguousWith.front(), FnDecl); |
13633 | Diag(OpLoc, diag::ext_ovl_ambiguous_oper_binary_reversed) |
13634 | << BinaryOperator::getOpcodeStr(Opc) |
13635 | << Args[0]->getType() << Args[1]->getType() << AmbiguousWithSelf |
13636 | << Args[0]->getSourceRange() << Args[1]->getSourceRange(); |
13637 | if (AmbiguousWithSelf) { |
13638 | Diag(FnDecl->getLocation(), |
13639 | diag::note_ovl_ambiguous_oper_binary_reversed_self); |
13640 | } else { |
13641 | Diag(FnDecl->getLocation(), |
13642 | diag::note_ovl_ambiguous_oper_binary_selected_candidate); |
13643 | for (auto *F : AmbiguousWith) |
13644 | Diag(F->getLocation(), |
13645 | diag::note_ovl_ambiguous_oper_binary_reversed_candidate); |
13646 | } |
13647 | } |
13648 | } |
13649 | |
13650 | |
13651 | if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(FnDecl)) { |
13652 | |
13653 | CheckMemberOperatorAccess(OpLoc, Args[0], Args[1], Best->FoundDecl); |
13654 | |
13655 | ExprResult Arg1 = |
13656 | PerformCopyInitialization( |
13657 | InitializedEntity::InitializeParameter(Context, |
13658 | FnDecl->getParamDecl(0)), |
13659 | SourceLocation(), Args[1]); |
13660 | if (Arg1.isInvalid()) |
13661 | return ExprError(); |
13662 | |
13663 | ExprResult Arg0 = |
13664 | PerformObjectArgumentInitialization(Args[0], nullptr, |
13665 | Best->FoundDecl, Method); |
13666 | if (Arg0.isInvalid()) |
13667 | return ExprError(); |
13668 | Base = Args[0] = Arg0.getAs<Expr>(); |
13669 | Args[1] = RHS = Arg1.getAs<Expr>(); |
13670 | } else { |
13671 | |
13672 | ExprResult Arg0 = PerformCopyInitialization( |
13673 | InitializedEntity::InitializeParameter(Context, |
13674 | FnDecl->getParamDecl(0)), |
13675 | SourceLocation(), Args[0]); |
13676 | if (Arg0.isInvalid()) |
13677 | return ExprError(); |
13678 | |
13679 | ExprResult Arg1 = |
13680 | PerformCopyInitialization( |
13681 | InitializedEntity::InitializeParameter(Context, |
13682 | FnDecl->getParamDecl(1)), |
13683 | SourceLocation(), Args[1]); |
13684 | if (Arg1.isInvalid()) |
13685 | return ExprError(); |
13686 | Args[0] = LHS = Arg0.getAs<Expr>(); |
13687 | Args[1] = RHS = Arg1.getAs<Expr>(); |
13688 | } |
13689 | |
13690 | |
13691 | ExprResult FnExpr = CreateFunctionRefExpr(*this, FnDecl, |
13692 | Best->FoundDecl, Base, |
13693 | HadMultipleCandidates, OpLoc); |
13694 | if (FnExpr.isInvalid()) |
13695 | return ExprError(); |
13696 | |
13697 | |
13698 | QualType ResultTy = FnDecl->getReturnType(); |
13699 | ExprValueKind VK = Expr::getValueKindForType(ResultTy); |
13700 | ResultTy = ResultTy.getNonLValueExprType(Context); |
13701 | |
13702 | CXXOperatorCallExpr *TheCall = CXXOperatorCallExpr::Create( |
13703 | Context, ChosenOp, FnExpr.get(), Args, ResultTy, VK, OpLoc, |
13704 | CurFPFeatureOverrides(), Best->IsADLCandidate); |
13705 | |
13706 | if (CheckCallReturnType(FnDecl->getReturnType(), OpLoc, TheCall, |
13707 | FnDecl)) |
13708 | return ExprError(); |
13709 | |
13710 | ArrayRef<const Expr *> ArgsArray(Args, 2); |
13711 | const Expr *ImplicitThis = nullptr; |
13712 | |
13713 | if (isa<CXXMethodDecl>(FnDecl)) { |
13714 | ImplicitThis = ArgsArray[0]; |
13715 | ArgsArray = ArgsArray.slice(1); |
13716 | } |
13717 | |
13718 | |
13719 | if (Op == OO_Equal) |
13720 | DiagnoseSelfMove(Args[0], Args[1], OpLoc); |
13721 | |
13722 | if (ImplicitThis) { |
13723 | QualType ThisType = Context.getPointerType(ImplicitThis->getType()); |
13724 | QualType ThisTypeFromDecl = Context.getPointerType( |
13725 | cast<CXXMethodDecl>(FnDecl)->getThisObjectType()); |
13726 | |
13727 | CheckArgAlignment(OpLoc, FnDecl, "'this'", ThisType, |
13728 | ThisTypeFromDecl); |
13729 | } |
13730 | |
13731 | checkCall(FnDecl, nullptr, ImplicitThis, ArgsArray, |
13732 | isa<CXXMethodDecl>(FnDecl), OpLoc, TheCall->getSourceRange(), |
13733 | VariadicDoesNotApply); |
13734 | |
13735 | ExprResult R = MaybeBindToTemporary(TheCall); |
13736 | if (R.isInvalid()) |
13737 | return ExprError(); |
13738 | |
13739 | R = CheckForImmediateInvocation(R, FnDecl); |
13740 | if (R.isInvalid()) |
13741 | return ExprError(); |
13742 | |
13743 | |
13744 | |
13745 | if ((Best->RewriteKind & CRK_DifferentOperator) || |
13746 | (Op == OO_Spaceship && IsReversed)) { |
13747 | if (Op == OO_ExclaimEqual) { |
13748 | assert(ChosenOp == OO_EqualEqual && "unexpected operator name"); |
13749 | R = CreateBuiltinUnaryOp(OpLoc, UO_LNot, R.get()); |
13750 | } else { |
13751 | assert(ChosenOp == OO_Spaceship && "unexpected operator name"); |
13752 | llvm::APSInt Zero(Context.getTypeSize(Context.IntTy), false); |
13753 | Expr *ZeroLiteral = |
13754 | IntegerLiteral::Create(Context, Zero, Context.IntTy, OpLoc); |
13755 | |
13756 | Sema::CodeSynthesisContext Ctx; |
13757 | Ctx.Kind = Sema::CodeSynthesisContext::RewritingOperatorAsSpaceship; |
13758 | Ctx.Entity = FnDecl; |
13759 | pushCodeSynthesisContext(Ctx); |
13760 | |
13761 | R = CreateOverloadedBinOp( |
13762 | OpLoc, Opc, Fns, IsReversed ? ZeroLiteral : R.get(), |
13763 | IsReversed ? R.get() : ZeroLiteral, PerformADL, |
13764 | false); |
13765 | |
13766 | popCodeSynthesisContext(); |
13767 | } |
13768 | if (R.isInvalid()) |
13769 | return ExprError(); |
13770 | } else { |
13771 | assert(ChosenOp == Op && "unexpected operator name"); |
13772 | } |
13773 | |
13774 | |
13775 | if (Best->RewriteKind != CRK_None) |
13776 | R = new (Context) CXXRewrittenBinaryOperator(R.get(), IsReversed); |
13777 | |
13778 | return R; |
13779 | } else { |
13780 | |
13781 | |
13782 | |
13783 | ExprResult ArgsRes0 = PerformImplicitConversion( |
13784 | Args[0], Best->BuiltinParamTypes[0], Best->Conversions[0], |
13785 | AA_Passing, CCK_ForBuiltinOverloadedOp); |
13786 | if (ArgsRes0.isInvalid()) |
13787 | return ExprError(); |
13788 | Args[0] = ArgsRes0.get(); |
13789 | |
13790 | ExprResult ArgsRes1 = PerformImplicitConversion( |
13791 | Args[1], Best->BuiltinParamTypes[1], Best->Conversions[1], |
13792 | AA_Passing, CCK_ForBuiltinOverloadedOp); |
13793 | if (ArgsRes1.isInvalid()) |
13794 | return ExprError(); |
13795 | Args[1] = ArgsRes1.get(); |
13796 | break; |
13797 | } |
13798 | } |
13799 | |
13800 | case OR_No_Viable_Function: { |
13801 | |
13802 | |
13803 | |
13804 | |
13805 | if (Opc == BO_Comma) |
13806 | break; |
13807 | |
13808 | |
13809 | |
13810 | if (DefaultedFn && Opc == BO_Cmp) { |
13811 | ExprResult E = BuildSynthesizedThreeWayComparison(OpLoc, Fns, Args[0], |
13812 | Args[1], DefaultedFn); |
13813 | if (E.isInvalid() || E.isUsable()) |
13814 | return E; |
13815 | } |
13816 | |
13817 | |
13818 | |
13819 | |
13820 | ExprResult Result = ExprError(); |
13821 | StringRef OpcStr = BinaryOperator::getOpcodeStr(Opc); |
13822 | auto Cands = CandidateSet.CompleteCandidates(*this, OCD_AllCandidates, |
13823 | Args, OpLoc); |
13824 | DeferDiagsRAII DDR(*this, |
13825 | CandidateSet.shouldDeferDiags(*this, Args, OpLoc)); |
13826 | if (Args[0]->getType()->isRecordType() && |
13827 | Opc >= BO_Assign && Opc <= BO_OrAssign) { |
13828 | Diag(OpLoc, diag::err_ovl_no_viable_oper) |
13829 | << BinaryOperator::getOpcodeStr(Opc) |
13830 | << Args[0]->getSourceRange() << Args[1]->getSourceRange(); |
13831 | if (Args[0]->getType()->isIncompleteType()) { |
13832 | Diag(OpLoc, diag::note_assign_lhs_incomplete) |
13833 | << Args[0]->getType() |
13834 | << Args[0]->getSourceRange() << Args[1]->getSourceRange(); |
13835 | } |
13836 | } else { |
13837 | |
13838 | |
13839 | |
13840 | if (DiagnoseTwoPhaseOperatorLookup(*this, Op, OpLoc, Args)) |
13841 | |
13842 | return ExprError(); |
13843 | |
13844 | |
13845 | |
13846 | Result = CreateBuiltinBinOp(OpLoc, Opc, Args[0], Args[1]); |
13847 | } |
13848 | assert(Result.isInvalid() && |
13849 | "C++ binary operator overloading is missing candidates!"); |
13850 | CandidateSet.NoteCandidates(*this, Args, Cands, OpcStr, OpLoc); |
13851 | return Result; |
13852 | } |
13853 | |
13854 | case OR_Ambiguous: |
13855 | CandidateSet.NoteCandidates( |
13856 | PartialDiagnosticAt(OpLoc, PDiag(diag::err_ovl_ambiguous_oper_binary) |
13857 | << BinaryOperator::getOpcodeStr(Opc) |
13858 | << Args[0]->getType() |
13859 | << Args[1]->getType() |
13860 | << Args[0]->getSourceRange() |
13861 | << Args[1]->getSourceRange()), |
13862 | *this, OCD_AmbiguousCandidates, Args, BinaryOperator::getOpcodeStr(Opc), |
13863 | OpLoc); |
13864 | return ExprError(); |
13865 | |
13866 | case OR_Deleted: |
13867 | if (isImplicitlyDeleted(Best->Function)) { |
13868 | FunctionDecl *DeletedFD = Best->Function; |
13869 | DefaultedFunctionKind DFK = getDefaultedFunctionKind(DeletedFD); |
13870 | if (DFK.isSpecialMember()) { |
13871 | Diag(OpLoc, diag::err_ovl_deleted_special_oper) |
13872 | << Args[0]->getType() << DFK.asSpecialMember(); |
13873 | } else { |
13874 | assert(DFK.isComparison()); |
13875 | Diag(OpLoc, diag::err_ovl_deleted_comparison) |
13876 | << Args[0]->getType() << DeletedFD; |
13877 | } |
13878 | |
13879 | |
13880 | |
13881 | NoteDeletedFunction(DeletedFD); |
13882 | return ExprError(); |
13883 | } |
13884 | CandidateSet.NoteCandidates( |
13885 | PartialDiagnosticAt( |
13886 | OpLoc, PDiag(diag::err_ovl_deleted_oper) |
13887 | << getOperatorSpelling(Best->Function->getDeclName() |
13888 | .getCXXOverloadedOperator()) |
13889 | << Args[0]->getSourceRange() |
13890 | << Args[1]->getSourceRange()), |
13891 | *this, OCD_AllCandidates, Args, BinaryOperator::getOpcodeStr(Opc), |
13892 | OpLoc); |
13893 | return ExprError(); |
13894 | } |
13895 | |
13896 | |
13897 | return CreateBuiltinBinOp(OpLoc, Opc, Args[0], Args[1]); |
13898 | } |
13899 | |
13900 | ExprResult Sema::BuildSynthesizedThreeWayComparison( |
13901 | SourceLocation OpLoc, const UnresolvedSetImpl &Fns, Expr *LHS, Expr *RHS, |
13902 | FunctionDecl *DefaultedFn) { |
13903 | const ComparisonCategoryInfo *Info = |
13904 | Context.CompCategories.lookupInfoForType(DefaultedFn->getReturnType()); |
13905 | |
13906 | |
13907 | if (!Info) |
13908 | return ExprResult((Expr*)nullptr); |
13909 | |
13910 | |
13911 | |
13912 | assert(LHS->isGLValue() && RHS->isGLValue() && |
13913 | "cannot use prvalue expressions more than once"); |
13914 | Expr *OrigLHS = LHS; |
13915 | Expr *OrigRHS = RHS; |
13916 | |
13917 | |
13918 | |
13919 | LHS = new (Context) |
13920 | OpaqueValueExpr(LHS->getExprLoc(), LHS->getType(), LHS->getValueKind(), |
13921 | LHS->getObjectKind(), LHS); |
13922 | RHS = new (Context) |
13923 | OpaqueValueExpr(RHS->getExprLoc(), RHS->getType(), RHS->getValueKind(), |
13924 | RHS->getObjectKind(), RHS); |
13925 | |
13926 | ExprResult Eq = CreateOverloadedBinOp(OpLoc, BO_EQ, Fns, LHS, RHS, true, true, |
13927 | DefaultedFn); |
13928 | if (Eq.isInvalid()) |
13929 | return ExprError(); |
13930 | |
13931 | ExprResult Less = CreateOverloadedBinOp(OpLoc, BO_LT, Fns, LHS, RHS, true, |
13932 | true, DefaultedFn); |
13933 | if (Less.isInvalid()) |
13934 | return ExprError(); |
13935 | |
13936 | ExprResult Greater; |
13937 | if (Info->isPartial()) { |
13938 | Greater = CreateOverloadedBinOp(OpLoc, BO_LT, Fns, RHS, LHS, true, true, |
13939 | DefaultedFn); |
13940 | if (Greater.isInvalid()) |
13941 | return ExprError(); |
13942 | } |
13943 | |
13944 | |
13945 | struct Comparison { |
13946 | ExprResult Cmp; |
13947 | ComparisonCategoryResult Result; |
13948 | } Comparisons[4] = |
13949 | { {Eq, Info->isStrong() ? ComparisonCategoryResult::Equal |
13950 | : ComparisonCategoryResult::Equivalent}, |
13951 | {Less, ComparisonCategoryResult::Less}, |
13952 | {Greater, ComparisonCategoryResult::Greater}, |
13953 | {ExprResult(), ComparisonCategoryResult::Unordered}, |
13954 | }; |
13955 | |
13956 | int I = Info->isPartial() ? 3 : 2; |
13957 | |
13958 | |
13959 | ExprResult Result; |
13960 | for (; I >= 0; --I) { |
13961 | |
13962 | auto *VI = Info->lookupValueInfo(Comparisons[I].Result); |
13963 | |
13964 | if (!VI) |
13965 | return ExprResult((Expr*)nullptr); |
13966 | ExprResult ThisResult = |
13967 | BuildDeclarationNameExpr(CXXScopeSpec(), DeclarationNameInfo(), VI->VD); |
13968 | if (ThisResult.isInvalid()) |
13969 | return ExprError(); |
13970 | |
13971 | |
13972 | if (Result.get()) { |
13973 | Result = ActOnConditionalOp(OpLoc, OpLoc, Comparisons[I].Cmp.get(), |
13974 | ThisResult.get(), Result.get()); |
13975 | if (Result.isInvalid()) |
13976 | return ExprError(); |
13977 | } else { |
13978 | Result = ThisResult; |
13979 | } |
13980 | } |
13981 | |
13982 | |
13983 | |
13984 | Expr *SyntacticForm = BinaryOperator::Create( |
13985 | Context, OrigLHS, OrigRHS, BO_Cmp, Result.get()->getType(), |
13986 | Result.get()->getValueKind(), Result.get()->getObjectKind(), OpLoc, |
13987 | CurFPFeatureOverrides()); |
13988 | Expr *SemanticForm[] = {LHS, RHS, Result.get()}; |
13989 | return PseudoObjectExpr::Create(Context, SyntacticForm, SemanticForm, 2); |
13990 | } |
13991 | |
13992 | ExprResult |
13993 | Sema::CreateOverloadedArraySubscriptExpr(SourceLocation LLoc, |
13994 | SourceLocation RLoc, |
13995 | Expr *Base, Expr *Idx) { |
13996 | Expr *Args[2] = { Base, Idx }; |
13997 | DeclarationName OpName = |
13998 | Context.DeclarationNames.getCXXOperatorName(OO_Subscript); |
13999 | |
14000 | |
14001 | |
14002 | if (Args[0]->isTypeDependent() || Args[1]->isTypeDependent()) { |
14003 | |
14004 | CXXRecordDecl *NamingClass = nullptr; |
14005 | |
14006 | DeclarationNameInfo OpNameInfo(OpName, LLoc); |
14007 | OpNameInfo.setCXXOperatorNameRange(SourceRange(LLoc, RLoc)); |
14008 | ExprResult Fn = CreateUnresolvedLookupExpr( |
14009 | NamingClass, NestedNameSpecifierLoc(), OpNameInfo, UnresolvedSet<0>()); |
14010 | if (Fn.isInvalid()) |
14011 | return ExprError(); |
14012 | |
14013 | |
14014 | return CXXOperatorCallExpr::Create(Context, OO_Subscript, Fn.get(), Args, |
14015 | Context.DependentTy, VK_PRValue, RLoc, |
14016 | CurFPFeatureOverrides()); |
14017 | } |
14018 | |
14019 | |
14020 | if (checkPlaceholderForOverload(*this, Args[0])) |
14021 | return ExprError(); |
14022 | if (checkPlaceholderForOverload(*this, Args[1])) |
14023 | return ExprError(); |
14024 | |
14025 | |
14026 | OverloadCandidateSet CandidateSet(LLoc, OverloadCandidateSet::CSK_Operator); |
14027 | |
14028 | |
14029 | |
14030 | |
14031 | AddMemberOperatorCandidates(OO_Subscript, LLoc, Args, CandidateSet); |
14032 | |
14033 | |
14034 | AddBuiltinOperatorCandidates(OO_Subscript, LLoc, Args, CandidateSet); |
14035 | |
14036 | bool HadMultipleCandidates = (CandidateSet.size() > 1); |
14037 | |
14038 | |
14039 | OverloadCandidateSet::iterator Best; |
14040 | switch (CandidateSet.BestViableFunction(*this, LLoc, Best)) { |
14041 | case OR_Success: { |
14042 | |
14043 | FunctionDecl *FnDecl = Best->Function; |
14044 | |
14045 | if (FnDecl) { |
14046 | |
14047 | |
14048 | |
14049 | CheckMemberOperatorAccess(LLoc, Args[0], Args[1], Best->FoundDecl); |
14050 | |
14051 | |
14052 | CXXMethodDecl *Method = cast<CXXMethodDecl>(FnDecl); |
14053 | ExprResult Arg0 = |
14054 | PerformObjectArgumentInitialization(Args[0], nullptr, |
14055 | Best->FoundDecl, Method); |
14056 | if (Arg0.isInvalid()) |
14057 | return ExprError(); |
14058 | Args[0] = Arg0.get(); |
14059 | |
14060 | |
14061 | ExprResult InputInit |
14062 | = PerformCopyInitialization(InitializedEntity::InitializeParameter( |
14063 | Context, |
14064 | FnDecl->getParamDecl(0)), |
14065 | SourceLocation(), |
14066 | Args[1]); |
14067 | if (InputInit.isInvalid()) |
14068 | return ExprError(); |
14069 | |
14070 | Args[1] = InputInit.getAs<Expr>(); |
14071 | |
14072 | |
14073 | DeclarationNameInfo OpLocInfo(OpName, LLoc); |
14074 | OpLocInfo.setCXXOperatorNameRange(SourceRange(LLoc, RLoc)); |
14075 | ExprResult FnExpr = CreateFunctionRefExpr(*this, FnDecl, |
14076 | Best->FoundDecl, |
14077 | Base, |
14078 | HadMultipleCandidates, |
14079 | OpLocInfo.getLoc(), |
14080 | OpLocInfo.getInfo()); |
14081 | if (FnExpr.isInvalid()) |
14082 | return ExprError(); |
14083 | |
14084 | |
14085 | QualType ResultTy = FnDecl->getReturnType(); |
14086 | ExprValueKind VK = Expr::getValueKindForType(ResultTy); |
14087 | ResultTy = ResultTy.getNonLValueExprType(Context); |
14088 | |
14089 | CXXOperatorCallExpr *TheCall = CXXOperatorCallExpr::Create( |
14090 | Context, OO_Subscript, FnExpr.get(), Args, ResultTy, VK, RLoc, |
14091 | CurFPFeatureOverrides()); |
14092 | if (CheckCallReturnType(FnDecl->getReturnType(), LLoc, TheCall, FnDecl)) |
14093 | return ExprError(); |
14094 | |
14095 | if (CheckFunctionCall(Method, TheCall, |
14096 | Method->getType()->castAs<FunctionProtoType>())) |
14097 | return ExprError(); |
14098 | |
14099 | return MaybeBindToTemporary(TheCall); |
14100 | } else { |
14101 | |
14102 | |
14103 | |
14104 | ExprResult ArgsRes0 = PerformImplicitConversion( |
14105 | Args[0], Best->BuiltinParamTypes[0], Best->Conversions[0], |
14106 | AA_Passing, CCK_ForBuiltinOverloadedOp); |
14107 | if (ArgsRes0.isInvalid()) |
14108 | return ExprError(); |
14109 | Args[0] = ArgsRes0.get(); |
14110 | |
14111 | ExprResult ArgsRes1 = PerformImplicitConversion( |
14112 | Args[1], Best->BuiltinParamTypes[1], Best->Conversions[1], |
14113 | AA_Passing, CCK_ForBuiltinOverloadedOp); |
14114 | if (ArgsRes1.isInvalid()) |
14115 | return ExprError(); |
14116 | Args[1] = ArgsRes1.get(); |
14117 | |
14118 | break; |
14119 | } |
14120 | } |
14121 | |
14122 | case OR_No_Viable_Function: { |
14123 | PartialDiagnostic PD = CandidateSet.empty() |
14124 | ? (PDiag(diag::err_ovl_no_oper) |
14125 | << Args[0]->getType() << 0 |
14126 | << Args[0]->getSourceRange() << Args[1]->getSourceRange()) |
14127 | : (PDiag(diag::err_ovl_no_viable_subscript) |
14128 | << Args[0]->getType() << Args[0]->getSourceRange() |
14129 | << Args[1]->getSourceRange()); |
14130 | CandidateSet.NoteCandidates(PartialDiagnosticAt(LLoc, PD), *this, |
14131 | OCD_AllCandidates, Args, "[]", LLoc); |
14132 | return ExprError(); |
14133 | } |
14134 | |
14135 | case OR_Ambiguous: |
14136 | CandidateSet.NoteCandidates( |
14137 | PartialDiagnosticAt(LLoc, PDiag(diag::err_ovl_ambiguous_oper_binary) |
14138 | << "[]" << Args[0]->getType() |
14139 | << Args[1]->getType() |
14140 | << Args[0]->getSourceRange() |
14141 | << Args[1]->getSourceRange()), |
14142 | *this, OCD_AmbiguousCandidates, Args, "[]", LLoc); |
14143 | return ExprError(); |
14144 | |
14145 | case OR_Deleted: |
14146 | CandidateSet.NoteCandidates( |
14147 | PartialDiagnosticAt(LLoc, PDiag(diag::err_ovl_deleted_oper) |
14148 | << "[]" << Args[0]->getSourceRange() |
14149 | << Args[1]->getSourceRange()), |
14150 | *this, OCD_AllCandidates, Args, "[]", LLoc); |
14151 | return ExprError(); |
14152 | } |
14153 | |
14154 | |
14155 | return CreateBuiltinArraySubscriptExpr(Args[0], LLoc, Args[1], RLoc); |
14156 | } |
14157 | |
14158 | |
14159 | |
14160 | |
14161 | |
14162 | |
14163 | |
14164 | |
14165 | ExprResult Sema::BuildCallToMemberFunction(Scope *S, Expr *MemExprE, |
14166 | SourceLocation LParenLoc, |
14167 | MultiExprArg Args, |
14168 | SourceLocation RParenLoc, |
14169 | bool AllowRecovery) { |
14170 | assert(MemExprE->getType() == Context.BoundMemberTy || |
14171 | MemExprE->getType() == Context.OverloadTy); |
14172 | |
14173 | |
14174 | |
14175 | Expr *NakedMemExpr = MemExprE->IgnoreParens(); |
14176 | |
14177 | |
14178 | if (BinaryOperator *op = dyn_cast<BinaryOperator>(NakedMemExpr)) { |
14179 | assert(op->getType() == Context.BoundMemberTy); |
14180 | assert(op->getOpcode() == BO_PtrMemD || op->getOpcode() == BO_PtrMemI); |
14181 | |
14182 | QualType fnType = |
14183 | op->getRHS()->getType()->castAs<MemberPointerType>()->getPointeeType(); |
14184 | |
14185 | const FunctionProtoType *proto = fnType->castAs<FunctionProtoType>(); |
14186 | QualType resultType = proto->getCallResultType(Context); |
14187 | ExprValueKind valueKind = Expr::getValueKindForType(proto->getReturnType()); |
14188 | |
14189 | |
14190 | |
14191 | Qualifiers funcQuals = proto->getMethodQuals(); |
14192 | |
14193 | QualType objectType = op->getLHS()->getType(); |
14194 | if (op->getOpcode() == BO_PtrMemI) |
14195 | objectType = objectType->castAs<PointerType>()->getPointeeType(); |
14196 | Qualifiers objectQuals = objectType.getQualifiers(); |
14197 | |
14198 | Qualifiers difference = objectQuals - funcQuals; |
14199 | difference.removeObjCGCAttr(); |
14200 | difference.removeAddressSpace(); |
14201 | if (difference) { |
14202 | std::string qualsString = difference.getAsString(); |
14203 | Diag(LParenLoc, diag::err_pointer_to_member_call_drops_quals) |
14204 | << fnType.getUnqualifiedType() |
14205 | << qualsString |
14206 | << (qualsString.find(' ') == std::string::npos ? 1 : 2); |
14207 | } |
14208 | |
14209 | CXXMemberCallExpr *call = CXXMemberCallExpr::Create( |
14210 | Context, MemExprE, Args, resultType, valueKind, RParenLoc, |
14211 | CurFPFeatureOverrides(), proto->getNumParams()); |
14212 | |
14213 | if (CheckCallReturnType(proto->getReturnType(), op->getRHS()->getBeginLoc(), |
14214 | call, nullptr)) |
14215 | return ExprError(); |
14216 | |
14217 | if (ConvertArgumentsForCall(call, op, nullptr, proto, Args, RParenLoc)) |
14218 | return ExprError(); |
14219 | |
14220 | if (CheckOtherCall(call, proto)) |
14221 | return ExprError(); |
14222 | |
14223 | return MaybeBindToTemporary(call); |
14224 | } |
14225 | |
14226 | |
14227 | |
14228 | |
14229 | auto BuildRecoveryExpr = [&](QualType Type) { |
14230 | if (!AllowRecovery) |
14231 | return ExprError(); |
14232 | std::vector<Expr *> SubExprs = {MemExprE}; |
14233 | llvm::for_each(Args, [&SubExprs](Expr *E) { SubExprs.push_back(E); }); |
14234 | return CreateRecoveryExpr(MemExprE->getBeginLoc(), RParenLoc, SubExprs, |
14235 | Type); |
14236 | }; |
14237 | if (isa<CXXPseudoDestructorExpr>(NakedMemExpr)) |
14238 | return CallExpr::Create(Context, MemExprE, Args, Context.VoidTy, VK_PRValue, |
14239 | RParenLoc, CurFPFeatureOverrides()); |
14240 | |
14241 | UnbridgedCastsSet UnbridgedCasts; |
14242 | if (checkArgPlaceholdersForOverload(*this, Args, UnbridgedCasts)) |
14243 | return ExprError(); |
14244 | |
14245 | MemberExpr *MemExpr; |
14246 | CXXMethodDecl *Method = nullptr; |
14247 | DeclAccessPair FoundDecl = DeclAccessPair::make(nullptr, AS_public); |
14248 | NestedNameSpecifier *Qualifier = nullptr; |
14249 | if (isa<MemberExpr>(NakedMemExpr)) { |
14250 | MemExpr = cast<MemberExpr>(NakedMemExpr); |
14251 | Method = cast<CXXMethodDecl>(MemExpr->getMemberDecl()); |
14252 | FoundDecl = MemExpr->getFoundDecl(); |
14253 | Qualifier = MemExpr->getQualifier(); |
14254 | UnbridgedCasts.restore(); |
14255 | } else { |
14256 | UnresolvedMemberExpr *UnresExpr = cast<UnresolvedMemberExpr>(NakedMemExpr); |
14257 | Qualifier = UnresExpr->getQualifier(); |
14258 | |
14259 | QualType ObjectType = UnresExpr->getBaseType(); |
14260 | Expr::Classification ObjectClassification |
14261 | = UnresExpr->isArrow()? Expr::Classification::makeSimpleLValue() |
14262 | : UnresExpr->getBase()->Classify(Context); |
14263 | |
14264 | |
14265 | OverloadCandidateSet CandidateSet(UnresExpr->getMemberLoc(), |
14266 | OverloadCandidateSet::CSK_Normal); |
14267 | |
14268 | |
14269 | TemplateArgumentListInfo TemplateArgsBuffer, *TemplateArgs = nullptr; |
14270 | if (UnresExpr->hasExplicitTemplateArgs()) { |
14271 | UnresExpr->copyTemplateArgumentsInto(TemplateArgsBuffer); |
14272 | TemplateArgs = &TemplateArgsBuffer; |
14273 | } |
14274 | |
14275 | for (UnresolvedMemberExpr::decls_iterator I = UnresExpr->decls_begin(), |
14276 | E = UnresExpr->decls_end(); I != E; ++I) { |
14277 | |
14278 | NamedDecl *Func = *I; |
14279 | CXXRecordDecl *ActingDC = cast<CXXRecordDecl>(Func->getDeclContext()); |
14280 | if (isa<UsingShadowDecl>(Func)) |
14281 | Func = cast<UsingShadowDecl>(Func)->getTargetDecl(); |
14282 | |
14283 | |
14284 | |
14285 | if (getLangOpts().MicrosoftExt && isa<CXXConstructorDecl>(Func)) { |
14286 | AddOverloadCandidate(cast<CXXConstructorDecl>(Func), I.getPair(), Args, |
14287 | CandidateSet, |
14288 | false); |
14289 | } else if ((Method = dyn_cast<CXXMethodDecl>(Func))) { |
14290 | |
14291 | |
14292 | if (TemplateArgs) |
14293 | continue; |
14294 | |
14295 | AddMethodCandidate(Method, I.getPair(), ActingDC, ObjectType, |
14296 | ObjectClassification, Args, CandidateSet, |
14297 | false); |
14298 | } else { |
14299 | AddMethodTemplateCandidate( |
14300 | cast<FunctionTemplateDecl>(Func), I.getPair(), ActingDC, |
14301 | TemplateArgs, ObjectType, ObjectClassification, Args, CandidateSet, |
14302 | false); |
14303 | } |
14304 | } |
14305 | |
14306 | DeclarationName DeclName = UnresExpr->getMemberName(); |
14307 | |
14308 | UnbridgedCasts.restore(); |
14309 | |
14310 | OverloadCandidateSet::iterator Best; |
14311 | bool Succeeded = false; |
14312 | switch (CandidateSet.BestViableFunction(*this, UnresExpr->getBeginLoc(), |
14313 | Best)) { |
14314 | case OR_Success: |
14315 | Method = cast<CXXMethodDecl>(Best->Function); |
14316 | FoundDecl = Best->FoundDecl; |
14317 | CheckUnresolvedMemberAccess(UnresExpr, Best->FoundDecl); |
14318 | if (DiagnoseUseOfDecl(Best->FoundDecl, UnresExpr->getNameLoc())) |
14319 | break; |
14320 | |
14321 | |
14322 | |
14323 | |
14324 | |
14325 | |
14326 | if (Method != FoundDecl.getDecl() && |
14327 | DiagnoseUseOfDecl(Method, UnresExpr->getNameLoc())) |
14328 | break; |
14329 | Succeeded = true; |
14330 | break; |
14331 | |
14332 | case OR_No_Viable_Function: |
14333 | CandidateSet.NoteCandidates( |
14334 | PartialDiagnosticAt( |
14335 | UnresExpr->getMemberLoc(), |
14336 | PDiag(diag::err_ovl_no_viable_member_function_in_call) |
14337 | << DeclName << MemExprE->getSourceRange()), |
14338 | *this, OCD_AllCandidates, Args); |
14339 | break; |
14340 | case OR_Ambiguous: |
14341 | CandidateSet.NoteCandidates( |
14342 | PartialDiagnosticAt(UnresExpr->getMemberLoc(), |
14343 | PDiag(diag::err_ovl_ambiguous_member_call) |
14344 | << DeclName << MemExprE->getSourceRange()), |
14345 | *this, OCD_AmbiguousCandidates, Args); |
14346 | break; |
14347 | case OR_Deleted: |
14348 | CandidateSet.NoteCandidates( |
14349 | PartialDiagnosticAt(UnresExpr->getMemberLoc(), |
14350 | PDiag(diag::err_ovl_deleted_member_call) |
14351 | << DeclName << MemExprE->getSourceRange()), |
14352 | *this, OCD_AllCandidates, Args); |
14353 | break; |
14354 | } |
14355 | |
14356 | if (!Succeeded) |
14357 | return BuildRecoveryExpr(chooseRecoveryType(CandidateSet, &Best)); |
14358 | |
14359 | MemExprE = FixOverloadedFunctionReference(MemExprE, FoundDecl, Method); |
14360 | |
14361 | |
14362 | |
14363 | if (Method->isStatic()) { |
14364 | return BuildResolvedCallExpr(MemExprE, Method, LParenLoc, Args, |
14365 | RParenLoc); |
14366 | } |
14367 | |
14368 | MemExpr = cast<MemberExpr>(MemExprE->IgnoreParens()); |
14369 | } |
14370 | |
14371 | QualType ResultType = Method->getReturnType(); |
14372 | ExprValueKind VK = Expr::getValueKindForType(ResultType); |
14373 | ResultType = ResultType.getNonLValueExprType(Context); |
14374 | |
14375 | assert(Method && "Member call to something that isn't a method?"); |
14376 | const auto *Proto = Method->getType()->castAs<FunctionProtoType>(); |
14377 | CXXMemberCallExpr *TheCall = CXXMemberCallExpr::Create( |
14378 | Context, MemExprE, Args, ResultType, VK, RParenLoc, |
14379 | CurFPFeatureOverrides(), Proto->getNumParams()); |
14380 | |
14381 | |
14382 | if (CheckCallReturnType(Method->getReturnType(), MemExpr->getMemberLoc(), |
14383 | TheCall, Method)) |
14384 | return BuildRecoveryExpr(ResultType); |
14385 | |
14386 | |
14387 | |
14388 | |
14389 | if (!Method->isStatic()) { |
14390 | ExprResult ObjectArg = |
14391 | PerformObjectArgumentInitialization(MemExpr->getBase(), Qualifier, |
14392 | FoundDecl, Method); |
14393 | if (ObjectArg.isInvalid()) |
14394 | return ExprError(); |
14395 | MemExpr->setBase(ObjectArg.get()); |
14396 | } |
14397 | |
14398 | |
14399 | if (ConvertArgumentsForCall(TheCall, MemExpr, Method, Proto, Args, |
14400 | RParenLoc)) |
14401 | return BuildRecoveryExpr(ResultType); |
14402 | |
14403 | DiagnoseSentinelCalls(Method, LParenLoc, Args); |
14404 | |
14405 | if (CheckFunctionCall(Method, TheCall, Proto)) |
14406 | return ExprError(); |
14407 | |
14408 | |
14409 | |
14410 | |
14411 | if (auto *MemE = dyn_cast<MemberExpr>(NakedMemExpr)) { |
14412 | if (const EnableIfAttr *Attr = |
14413 | CheckEnableIf(Method, LParenLoc, Args, true)) { |
14414 | Diag(MemE->getMemberLoc(), |
14415 | diag::err_ovl_no_viable_member_function_in_call) |
14416 | << Method << Method->getSourceRange(); |
14417 | Diag(Method->getLocation(), |
14418 | diag::note_ovl_candidate_disabled_by_function_cond_attr) |
14419 | << Attr->getCond()->getSourceRange() << Attr->getMessage(); |
14420 | return ExprError(); |
14421 | } |
14422 | } |
14423 | |
14424 | if ((isa<CXXConstructorDecl>(CurContext) || |
14425 | isa<CXXDestructorDecl>(CurContext)) && |
14426 | TheCall->getMethodDecl()->isPure()) { |
14427 | const CXXMethodDecl *MD = TheCall->getMethodDecl(); |
14428 | |
14429 | if (isa<CXXThisExpr>(MemExpr->getBase()->IgnoreParenCasts()) && |
14430 | MemExpr->performsVirtualDispatch(getLangOpts())) { |
14431 | Diag(MemExpr->getBeginLoc(), |
14432 | diag::warn_call_to_pure_virtual_member_function_from_ctor_dtor) |
14433 | << MD->getDeclName() << isa<CXXDestructorDecl>(CurContext) |
14434 | << MD->getParent(); |
14435 | |
14436 | Diag(MD->getBeginLoc(), diag::note_previous_decl) << MD->getDeclName(); |
14437 | if (getLangOpts().AppleKext) |
14438 | Diag(MemExpr->getBeginLoc(), diag::note_pure_qualified_call_kext) |
14439 | << MD->getParent() << MD->getDeclName(); |
14440 | } |
14441 | } |
14442 | |
14443 | if (CXXDestructorDecl *DD = |
14444 | dyn_cast<CXXDestructorDecl>(TheCall->getMethodDecl())) { |
14445 | |
14446 | bool CallCanBeVirtual = !MemExpr->hasQualifier() || getLangOpts().AppleKext; |
14447 | CheckVirtualDtorCall(DD, MemExpr->getBeginLoc(), false, |
14448 | CallCanBeVirtual, true, |
14449 | MemExpr->getMemberLoc()); |
14450 | } |
14451 | |
14452 | return CheckForImmediateInvocation(MaybeBindToTemporary(TheCall), |
14453 | TheCall->getMethodDecl()); |
14454 | } |
14455 | |
14456 | |
14457 | |
14458 | |
14459 | |
14460 | ExprResult |
14461 | Sema::BuildCallToObjectOfClassType(Scope *S, Expr *Obj, |
14462 | SourceLocation LParenLoc, |
14463 | MultiExprArg Args, |
14464 | SourceLocation RParenLoc) { |
14465 | if (checkPlaceholderForOverload(*this, Obj)) |
14466 | return ExprError(); |
14467 | ExprResult Object = Obj; |
14468 | |
14469 | UnbridgedCastsSet UnbridgedCasts; |
14470 | if (checkArgPlaceholdersForOverload(*this, Args, UnbridgedCasts)) |
14471 | return ExprError(); |
14472 | |
14473 | assert(Object.get()->getType()->isRecordType() && |
14474 | "Requires object type argument"); |
14475 | |
14476 | |
14477 | |
14478 | |
14479 | |
14480 | |
14481 | |
14482 | |
14483 | OverloadCandidateSet CandidateSet(LParenLoc, |
14484 | OverloadCandidateSet::CSK_Operator); |
14485 | DeclarationName OpName = Context.DeclarationNames.getCXXOperatorName(OO_Call); |
14486 | |
14487 | if (RequireCompleteType(LParenLoc, Object.get()->getType(), |
14488 | diag::err_incomplete_object_call, Object.get())) |
14489 | return true; |
14490 | |
14491 | const auto *Record = Object.get()->getType()->castAs<RecordType>(); |
14492 | LookupResult R(*this, OpName, LParenLoc, LookupOrdinaryName); |
14493 | LookupQualifiedName(R, Record->getDecl()); |
14494 | R.suppressDiagnostics(); |
14495 | |
14496 | for (LookupResult::iterator Oper = R.begin(), OperEnd = R.end(); |
14497 | Oper != OperEnd; ++Oper) { |
14498 | AddMethodCandidate(Oper.getPair(), Object.get()->getType(), |
14499 | Object.get()->Classify(Context), Args, CandidateSet, |
14500 | false); |
14501 | } |
14502 | |
14503 | |
14504 | |
14505 | |
14506 | |
14507 | |
14508 | |
14509 | |
14510 | |
14511 | |
14512 | |
14513 | |
14514 | |
14515 | |
14516 | |
14517 | |
14518 | |
14519 | |
14520 | const auto &Conversions = |
14521 | cast<CXXRecordDecl>(Record->getDecl())->getVisibleConversionFunctions(); |
14522 | for (auto I = Conversions.begin(), E = Conversions.end(); I != E; ++I) { |
14523 | NamedDecl *D = *I; |
14524 | CXXRecordDecl *ActingContext = cast<CXXRecordDecl>(D->getDeclContext()); |
14525 | if (isa<UsingShadowDecl>(D)) |
14526 | D = cast<UsingShadowDecl>(D)->getTargetDecl(); |
14527 | |
14528 | |
14529 | |
14530 | if (isa<FunctionTemplateDecl>(D)) |
14531 | continue; |
14532 | |
14533 | CXXConversionDecl *Conv = cast<CXXConversionDecl>(D); |
14534 | if (!Conv->isExplicit()) { |
14535 | |
14536 | |
14537 | QualType ConvType = Conv->getConversionType().getNonReferenceType(); |
14538 | if (const PointerType *ConvPtrType = ConvType->getAs<PointerType>()) |
14539 | ConvType = ConvPtrType->getPointeeType(); |
14540 | |
14541 | if (const FunctionProtoType *Proto = ConvType->getAs<FunctionProtoType>()) |
14542 | { |
14543 | AddSurrogateCandidate(Conv, I.getPair(), ActingContext, Proto, |
14544 | Object.get(), Args, CandidateSet); |
14545 | } |
14546 | } |
14547 | } |
14548 | |
14549 | bool HadMultipleCandidates = (CandidateSet.size() > 1); |
14550 | |
14551 | |
14552 | OverloadCandidateSet::iterator Best; |
14553 | switch (CandidateSet.BestViableFunction(*this, Object.get()->getBeginLoc(), |
14554 | Best)) { |
14555 | case OR_Success: |
14556 | |
14557 | |
14558 | break; |
14559 | |
14560 | case OR_No_Viable_Function: { |
14561 | PartialDiagnostic PD = |
14562 | CandidateSet.empty() |
14563 | ? (PDiag(diag::err_ovl_no_oper) |
14564 | << Object.get()->getType() << 1 |
14565 | << Object.get()->getSourceRange()) |
14566 | : (PDiag(diag::err_ovl_no_viable_object_call) |
14567 | << Object.get()->getType() << Object.get()->getSourceRange()); |
14568 | CandidateSet.NoteCandidates( |
14569 | PartialDiagnosticAt(Object.get()->getBeginLoc(), PD), *this, |
14570 | OCD_AllCandidates, Args); |
14571 | break; |
14572 | } |
14573 | case OR_Ambiguous: |
14574 | CandidateSet.NoteCandidates( |
14575 | PartialDiagnosticAt(Object.get()->getBeginLoc(), |
14576 | PDiag(diag::err_ovl_ambiguous_object_call) |
14577 | << Object.get()->getType() |
14578 | << Object.get()->getSourceRange()), |
14579 | *this, OCD_AmbiguousCandidates, Args); |
14580 | break; |
14581 | |
14582 | case OR_Deleted: |
14583 | CandidateSet.NoteCandidates( |
14584 | PartialDiagnosticAt(Object.get()->getBeginLoc(), |
14585 | PDiag(diag::err_ovl_deleted_object_call) |
14586 | << Object.get()->getType() |
14587 | << Object.get()->getSourceRange()), |
14588 | *this, OCD_AllCandidates, Args); |
14589 | break; |
14590 | } |
14591 | |
14592 | if (Best == CandidateSet.end()) |
14593 | return true; |
14594 | |
14595 | UnbridgedCasts.restore(); |
14596 | |
14597 | if (Best->Function == nullptr) { |
14598 | |
14599 | |
14600 | CXXConversionDecl *Conv |
14601 | = cast<CXXConversionDecl>( |
14602 | Best->Conversions[0].UserDefined.ConversionFunction); |
14603 | |
14604 | CheckMemberOperatorAccess(LParenLoc, Object.get(), nullptr, |
14605 | Best->FoundDecl); |
14606 | if (DiagnoseUseOfDecl(Best->FoundDecl, LParenLoc)) |
14607 | return ExprError(); |
14608 | assert(Conv == Best->FoundDecl.getDecl() && |
14609 | "Found Decl & conversion-to-functionptr should be same, right?!"); |
14610 | |
14611 | |
14612 | |
14613 | |
14614 | |
14615 | |
14616 | ExprResult Call = BuildCXXMemberCallExpr(Object.get(), Best->FoundDecl, |
14617 | Conv, HadMultipleCandidates); |
14618 | if (Call.isInvalid()) |
14619 | return ExprError(); |
14620 | |
14621 | Call = ImplicitCastExpr::Create( |
14622 | Context, Call.get()->getType(), CK_UserDefinedConversion, Call.get(), |
14623 | nullptr, VK_PRValue, CurFPFeatureOverrides()); |
14624 | |
14625 | return BuildCallExpr(S, Call.get(), LParenLoc, Args, RParenLoc); |
14626 | } |
14627 | |
14628 | CheckMemberOperatorAccess(LParenLoc, Object.get(), nullptr, Best->FoundDecl); |
14629 | |
14630 | |
14631 | |
14632 | |
14633 | CXXMethodDecl *Method = cast<CXXMethodDecl>(Best->Function); |
14634 | |
14635 | |
14636 | if (Method->isInvalidDecl()) |
14637 | return ExprError(); |
14638 | |
14639 | const auto *Proto = Method->getType()->castAs<FunctionProtoType>(); |
14640 | unsigned NumParams = Proto->getNumParams(); |
14641 | |
14642 | DeclarationNameInfo OpLocInfo( |
14643 | Context.DeclarationNames.getCXXOperatorName(OO_Call), LParenLoc); |
14644 | OpLocInfo.setCXXOperatorNameRange(SourceRange(LParenLoc, RParenLoc)); |
14645 | ExprResult NewFn = CreateFunctionRefExpr(*this, Method, Best->FoundDecl, |
14646 | Obj, HadMultipleCandidates, |
14647 | OpLocInfo.getLoc(), |
14648 | OpLocInfo.getInfo()); |
14649 | if (NewFn.isInvalid()) |
14650 | return true; |
14651 | |
14652 | |
14653 | |
14654 | |
14655 | unsigned NumArgsSlots = 1 + std::max<unsigned>(Args.size(), NumParams); |
14656 | |
14657 | |
14658 | |
14659 | SmallVector<Expr *, 8> MethodArgs(NumArgsSlots); |
14660 | |
14661 | bool IsError = false; |
14662 | |
14663 | |
14664 | ExprResult ObjRes = |
14665 | PerformObjectArgumentInitialization(Object.get(), nullptr, |
14666 | Best->FoundDecl, Method); |
14667 | if (ObjRes.isInvalid()) |
14668 | IsError = true; |
14669 | else |
14670 | Object = ObjRes; |
14671 | MethodArgs[0] = Object.get(); |
14672 | |
14673 | |
14674 | for (unsigned i = 0; i != NumParams; i++) { |
14675 | Expr *Arg; |
14676 | if (i < Args.size()) { |
14677 | Arg = Args[i]; |
14678 | |
14679 | |
14680 | |
14681 | ExprResult InputInit |
14682 | = PerformCopyInitialization(InitializedEntity::InitializeParameter( |
14683 | Context, |
14684 | Method->getParamDecl(i)), |
14685 | SourceLocation(), Arg); |
14686 | |
14687 | IsError |= InputInit.isInvalid(); |
14688 | Arg = InputInit.getAs<Expr>(); |
14689 | } else { |
14690 | ExprResult DefArg |
14691 | = BuildCXXDefaultArgExpr(LParenLoc, Method, Method->getParamDecl(i)); |
14692 | if (DefArg.isInvalid()) { |
14693 | IsError = true; |
14694 | break; |
14695 | } |
14696 | |
14697 | Arg = DefArg.getAs<Expr>(); |
14698 | } |
14699 | |
14700 | MethodArgs[i + 1] = Arg; |
14701 | } |
14702 | |
14703 | |
14704 | if (Proto->isVariadic()) { |
14705 | |
14706 | for (unsigned i = NumParams, e = Args.size(); i < e; i++) { |
14707 | ExprResult Arg = DefaultVariadicArgumentPromotion(Args[i], VariadicMethod, |
14708 | nullptr); |
14709 | IsError |= Arg.isInvalid(); |
14710 | MethodArgs[i + 1] = Arg.get(); |
14711 | } |
14712 | } |
14713 | |
14714 | if (IsError) |
14715 | return true; |
14716 | |
14717 | DiagnoseSentinelCalls(Method, LParenLoc, Args); |
14718 | |
14719 | |
14720 | QualType ResultTy = Method->getReturnType(); |
14721 | ExprValueKind VK = Expr::getValueKindForType(ResultTy); |
14722 | ResultTy = ResultTy.getNonLValueExprType(Context); |
14723 | |
14724 | CXXOperatorCallExpr *TheCall = CXXOperatorCallExpr::Create( |
14725 | Context, OO_Call, NewFn.get(), MethodArgs, ResultTy, VK, RParenLoc, |
14726 | CurFPFeatureOverrides()); |
14727 | |
14728 | if (CheckCallReturnType(Method->getReturnType(), LParenLoc, TheCall, Method)) |
14729 | return true; |
14730 | |
14731 | if (CheckFunctionCall(Method, TheCall, Proto)) |
14732 | return true; |
14733 | |
14734 | return CheckForImmediateInvocation(MaybeBindToTemporary(TheCall), Method); |
14735 | } |
14736 | |
14737 | |
14738 | |
14739 | |
14740 | ExprResult |
14741 | Sema::BuildOverloadedArrowExpr(Scope *S, Expr *Base, SourceLocation OpLoc, |
14742 | bool *NoArrowOperatorFound) { |
14743 | assert(Base->getType()->isRecordType() && |
14744 | "left-hand side must have class type"); |
14745 | |
14746 | if (checkPlaceholderForOverload(*this, Base)) |
14747 | return ExprError(); |
14748 | |
14749 | SourceLocation Loc = Base->getExprLoc(); |
14750 | |
14751 | |
14752 | |
14753 | |
14754 | |
14755 | |
14756 | |
14757 | DeclarationName OpName = |
14758 | Context.DeclarationNames.getCXXOperatorName(OO_Arrow); |
14759 | OverloadCandidateSet CandidateSet(Loc, OverloadCandidateSet::CSK_Operator); |
14760 | |
14761 | if (RequireCompleteType(Loc, Base->getType(), |
14762 | diag::err_typecheck_incomplete_tag, Base)) |
14763 | return ExprError(); |
14764 | |
14765 | LookupResult R(*this, OpName, OpLoc, LookupOrdinaryName); |
14766 | LookupQualifiedName(R, Base->getType()->castAs<RecordType>()->getDecl()); |
14767 | R.suppressDiagnostics(); |
14768 | |
14769 | for (LookupResult::iterator Oper = R.begin(), OperEnd = R.end(); |
14770 | Oper != OperEnd; ++Oper) { |
14771 | AddMethodCandidate(Oper.getPair(), Base->getType(), Base->Classify(Context), |
14772 | None, CandidateSet, false); |
14773 | } |
14774 | |
14775 | bool HadMultipleCandidates = (CandidateSet.size() > 1); |
14776 | |
14777 | |
14778 | OverloadCandidateSet::iterator Best; |
14779 | switch (CandidateSet.BestViableFunction(*this, OpLoc, Best)) { |
14780 | case OR_Success: |
14781 | |
14782 | break; |
14783 | |
14784 | case OR_No_Viable_Function: { |
14785 | auto Cands = CandidateSet.CompleteCandidates(*this, OCD_AllCandidates, Base); |
14786 | if (CandidateSet.empty()) { |
14787 | QualType BaseType = Base->getType(); |
14788 | if (NoArrowOperatorFound) { |
14789 | |
14790 | |
14791 | *NoArrowOperatorFound = true; |
14792 | return ExprError(); |
14793 | } |
14794 | Diag(OpLoc, diag::err_typecheck_member_reference_arrow) |
14795 | << BaseType << Base->getSourceRange(); |
14796 | if (BaseType->isRecordType() && !BaseType->isPointerType()) { |
14797 | Diag(OpLoc, diag::note_typecheck_member_reference_suggestion) |
14798 | << FixItHint::CreateReplacement(OpLoc, "."); |
14799 | } |
14800 | } else |
14801 | Diag(OpLoc, diag::err_ovl_no_viable_oper) |
14802 | << "operator->" << Base->getSourceRange(); |
14803 | CandidateSet.NoteCandidates(*this, Base, Cands); |
14804 | return ExprError(); |
14805 | } |
14806 | case OR_Ambiguous: |
14807 | CandidateSet.NoteCandidates( |
14808 | PartialDiagnosticAt(OpLoc, PDiag(diag::err_ovl_ambiguous_oper_unary) |
14809 | << "->" << Base->getType() |
14810 | << Base->getSourceRange()), |
14811 | *this, OCD_AmbiguousCandidates, Base); |
14812 | return ExprError(); |
14813 | |
14814 | case OR_Deleted: |
14815 | CandidateSet.NoteCandidates( |
14816 | PartialDiagnosticAt(OpLoc, PDiag(diag::err_ovl_deleted_oper) |
14817 | << "->" << Base->getSourceRange()), |
14818 | *this, OCD_AllCandidates, Base); |
14819 | return ExprError(); |
14820 | } |
14821 | |
14822 | CheckMemberOperatorAccess(OpLoc, Base, nullptr, Best->FoundDecl); |
14823 | |
14824 | |
14825 | CXXMethodDecl *Method = cast<CXXMethodDecl>(Best->Function); |
14826 | ExprResult BaseResult = |
14827 | PerformObjectArgumentInitialization(Base, nullptr, |
14828 | Best->FoundDecl, Method); |
14829 | if (BaseResult.isInvalid()) |
14830 | return ExprError(); |
14831 | Base = BaseResult.get(); |
14832 | |
14833 | |
14834 | ExprResult FnExpr = CreateFunctionRefExpr(*this, Method, Best->FoundDecl, |
14835 | Base, HadMultipleCandidates, OpLoc); |
14836 | if (FnExpr.isInvalid()) |
14837 | return ExprError(); |
14838 | |
14839 | QualType ResultTy = Method->getReturnType(); |
14840 | ExprValueKind VK = Expr::getValueKindForType(ResultTy); |
14841 | ResultTy = ResultTy.getNonLValueExprType(Context); |
14842 | CXXOperatorCallExpr *TheCall = |
14843 | CXXOperatorCallExpr::Create(Context, OO_Arrow, FnExpr.get(), Base, |
14844 | ResultTy, VK, OpLoc, CurFPFeatureOverrides()); |
14845 | |
14846 | if (CheckCallReturnType(Method->getReturnType(), OpLoc, TheCall, Method)) |
14847 | return ExprError(); |
14848 | |
14849 | if (CheckFunctionCall(Method, TheCall, |
14850 | Method->getType()->castAs<FunctionProtoType>())) |
14851 | return ExprError(); |
14852 | |
14853 | return MaybeBindToTemporary(TheCall); |
14854 | } |
14855 | |
14856 | |
14857 | |
14858 | ExprResult Sema::BuildLiteralOperatorCall(LookupResult &R, |
14859 | DeclarationNameInfo &SuffixInfo, |
14860 | ArrayRef<Expr*> Args, |
14861 | SourceLocation LitEndLoc, |
14862 | TemplateArgumentListInfo *TemplateArgs) { |
14863 | SourceLocation UDSuffixLoc = SuffixInfo.getCXXLiteralOperatorNameLoc(); |
14864 | |
14865 | OverloadCandidateSet CandidateSet(UDSuffixLoc, |
14866 | OverloadCandidateSet::CSK_Normal); |
14867 | AddNonMemberOperatorCandidates(R.asUnresolvedSet(), Args, CandidateSet, |
14868 | TemplateArgs); |
14869 | |
14870 | bool HadMultipleCandidates = (CandidateSet.size() > 1); |
14871 | |
14872 | |
14873 | |
14874 | OverloadCandidateSet::iterator Best; |
14875 | switch (CandidateSet.BestViableFunction(*this, UDSuffixLoc, Best)) { |
14876 | case OR_Success: |
14877 | case OR_Deleted: |
14878 | break; |
14879 | |
14880 | case OR_No_Viable_Function: |
14881 | CandidateSet.NoteCandidates( |
14882 | PartialDiagnosticAt(UDSuffixLoc, |
14883 | PDiag(diag::err_ovl_no_viable_function_in_call) |
14884 | << R.getLookupName()), |
14885 | *this, OCD_AllCandidates, Args); |
14886 | return ExprError(); |
14887 | |
14888 | case OR_Ambiguous: |
14889 | CandidateSet.NoteCandidates( |
14890 | PartialDiagnosticAt(R.getNameLoc(), PDiag(diag::err_ovl_ambiguous_call) |
14891 | << R.getLookupName()), |
14892 | *this, OCD_AmbiguousCandidates, Args); |
14893 | return ExprError(); |
14894 | } |
14895 | |
14896 | FunctionDecl *FD = Best->Function; |
14897 | ExprResult Fn = CreateFunctionRefExpr(*this, FD, Best->FoundDecl, |
14898 | nullptr, HadMultipleCandidates, |
14899 | SuffixInfo.getLoc(), |
14900 | SuffixInfo.getInfo()); |
14901 | if (Fn.isInvalid()) |
14902 | return true; |
14903 | |
14904 | |
14905 | |
14906 | Expr *ConvArgs[2]; |
14907 | for (unsigned ArgIdx = 0, N = Args.size(); ArgIdx != N; ++ArgIdx) { |
14908 | ExprResult InputInit = PerformCopyInitialization( |
14909 | InitializedEntity::InitializeParameter(Context, FD->getParamDecl(ArgIdx)), |
14910 | SourceLocation(), Args[ArgIdx]); |
14911 | if (InputInit.isInvalid()) |
14912 | return true; |
14913 | ConvArgs[ArgIdx] = InputInit.get(); |
14914 | } |
14915 | |
14916 | QualType ResultTy = FD->getReturnType(); |
14917 | ExprValueKind VK = Expr::getValueKindForType(ResultTy); |
14918 | ResultTy = ResultTy.getNonLValueExprType(Context); |
14919 | |
14920 | UserDefinedLiteral *UDL = UserDefinedLiteral::Create( |
14921 | Context, Fn.get(), llvm::makeArrayRef(ConvArgs, Args.size()), ResultTy, |
14922 | VK, LitEndLoc, UDSuffixLoc, CurFPFeatureOverrides()); |
14923 | |
14924 | if (CheckCallReturnType(FD->getReturnType(), UDSuffixLoc, UDL, FD)) |
14925 | return ExprError(); |
14926 | |
14927 | if (CheckFunctionCall(FD, UDL, nullptr)) |
14928 | return ExprError(); |
14929 | |
14930 | return CheckForImmediateInvocation(MaybeBindToTemporary(UDL), FD); |
14931 | } |
14932 | |
14933 | |
14934 | |
14935 | |
14936 | |
14937 | |
14938 | |
14939 | |
14940 | Sema::ForRangeStatus |
14941 | Sema::BuildForRangeBeginEndCall(SourceLocation Loc, |
14942 | SourceLocation RangeLoc, |
14943 | const DeclarationNameInfo &NameInfo, |
14944 | LookupResult &MemberLookup, |
14945 | OverloadCandidateSet *CandidateSet, |
14946 | Expr *Range, ExprResult *CallExpr) { |
14947 | Scope *S = nullptr; |
14948 | |
14949 | CandidateSet->clear(OverloadCandidateSet::CSK_Normal); |
14950 | if (!MemberLookup.empty()) { |
14951 | ExprResult MemberRef = |
14952 | BuildMemberReferenceExpr(Range, Range->getType(), Loc, |
14953 | false, CXXScopeSpec(), |
14954 | SourceLocation(), |
14955 | nullptr, |
14956 | MemberLookup, |
14957 | nullptr, S); |
14958 | if (MemberRef.isInvalid()) { |
14959 | *CallExpr = ExprError(); |
14960 | return FRS_DiagnosticIssued; |
14961 | } |
14962 | *CallExpr = BuildCallExpr(S, MemberRef.get(), Loc, None, Loc, nullptr); |
14963 | if (CallExpr->isInvalid()) { |
14964 | *CallExpr = ExprError(); |
14965 | return FRS_DiagnosticIssued; |
14966 | } |
14967 | } else { |
14968 | ExprResult FnR = CreateUnresolvedLookupExpr(nullptr, |
14969 | NestedNameSpecifierLoc(), |
14970 | NameInfo, UnresolvedSet<0>()); |
14971 | if (FnR.isInvalid()) |
14972 | return FRS_DiagnosticIssued; |
14973 | UnresolvedLookupExpr *Fn = cast<UnresolvedLookupExpr>(FnR.get()); |
14974 | |
14975 | bool CandidateSetError = buildOverloadedCallSet(S, Fn, Fn, Range, Loc, |
14976 | CandidateSet, CallExpr); |
14977 | if (CandidateSet->empty() || CandidateSetError) { |
14978 | *CallExpr = ExprError(); |
14979 | return FRS_NoViableFunction; |
14980 | } |
14981 | OverloadCandidateSet::iterator Best; |
14982 | OverloadingResult OverloadResult = |
14983 | CandidateSet->BestViableFunction(*this, Fn->getBeginLoc(), Best); |
14984 | |
14985 | if (OverloadResult == OR_No_Viable_Function) { |
14986 | *CallExpr = ExprError(); |
14987 | return FRS_NoViableFunction; |
14988 | } |
14989 | *CallExpr = FinishOverloadedCallExpr(*this, S, Fn, Fn, Loc, Range, |
14990 | Loc, nullptr, CandidateSet, &Best, |
14991 | OverloadResult, |
14992 | false); |
14993 | if (CallExpr->isInvalid() || OverloadResult != OR_Success) { |
14994 | *CallExpr = ExprError(); |
14995 | return FRS_DiagnosticIssued; |
14996 | } |
14997 | } |
14998 | return FRS_Success; |
14999 | } |
15000 | |
15001 | |
15002 | |
15003 | |
15004 | |
15005 | |
15006 | |
15007 | Expr *Sema::FixOverloadedFunctionReference(Expr *E, DeclAccessPair Found, |
15008 | FunctionDecl *Fn) { |
15009 | if (ParenExpr *PE = dyn_cast<ParenExpr>(E)) { |
15010 | Expr *SubExpr = FixOverloadedFunctionReference(PE->getSubExpr(), |
15011 | Found, Fn); |
15012 | if (SubExpr == PE->getSubExpr()) |
15013 | return PE; |
15014 | |
15015 | return new (Context) ParenExpr(PE->getLParen(), PE->getRParen(), SubExpr); |
15016 | } |
15017 | |
15018 | if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E)) { |
15019 | Expr *SubExpr = FixOverloadedFunctionReference(ICE->getSubExpr(), |
15020 | Found, Fn); |
15021 | assert(Context.hasSameType(ICE->getSubExpr()->getType(), |
15022 | SubExpr->getType()) && |
15023 | "Implicit cast type cannot be determined from overload"); |
15024 | assert(ICE->path_empty() && "fixing up hierarchy conversion?"); |
15025 | if (SubExpr == ICE->getSubExpr()) |
15026 | return ICE; |
15027 | |
15028 | return ImplicitCastExpr::Create(Context, ICE->getType(), ICE->getCastKind(), |
15029 | SubExpr, nullptr, ICE->getValueKind(), |
15030 | CurFPFeatureOverrides()); |
15031 | } |
15032 | |
15033 | if (auto *GSE = dyn_cast<GenericSelectionExpr>(E)) { |
15034 | if (!GSE->isResultDependent()) { |
15035 | Expr *SubExpr = |
15036 | FixOverloadedFunctionReference(GSE->getResultExpr(), Found, Fn); |
15037 | if (SubExpr == GSE->getResultExpr()) |
15038 | return GSE; |
15039 | |
15040 | |
15041 | |
15042 | ArrayRef<Expr *> A = GSE->getAssocExprs(); |
15043 | SmallVector<Expr *, 4> AssocExprs(A.begin(), A.end()); |
15044 | unsigned ResultIdx = GSE->getResultIndex(); |
15045 | AssocExprs[ResultIdx] = SubExpr; |
15046 | |
15047 | return GenericSelectionExpr::Create( |
15048 | Context, GSE->getGenericLoc(), GSE->getControllingExpr(), |
15049 | GSE->getAssocTypeSourceInfos(), AssocExprs, GSE->getDefaultLoc(), |
15050 | GSE->getRParenLoc(), GSE->containsUnexpandedParameterPack(), |
15051 | ResultIdx); |
15052 | } |
15053 | |
15054 | |
15055 | return GSE; |
15056 | } |
15057 | |
15058 | if (UnaryOperator *UnOp = dyn_cast<UnaryOperator>(E)) { |
15059 | assert(UnOp->getOpcode() == UO_AddrOf && |
15060 | "Can only take the address of an overloaded function"); |
15061 | if (CXXMethodDecl *Method = dyn_cast<CXXMethodDecl>(Fn)) { |
15062 | if (Method->isStatic()) { |
15063 | |
15064 | |
15065 | } else { |
15066 | |
15067 | |
15068 | |
15069 | Expr *SubExpr = FixOverloadedFunctionReference(UnOp->getSubExpr(), |
15070 | Found, Fn); |
15071 | if (SubExpr == UnOp->getSubExpr()) |
15072 | return UnOp; |
15073 | |
15074 | assert(isa<DeclRefExpr>(SubExpr) |
15075 | && "fixed to something other than a decl ref"); |
15076 | assert(cast<DeclRefExpr>(SubExpr)->getQualifier() |
15077 | && "fixed to a member ref with no nested name qualifier"); |
15078 | |
15079 | |
15080 | |
15081 | |
15082 | QualType ClassType |
15083 | = Context.getTypeDeclType(cast<RecordDecl>(Method->getDeclContext())); |
15084 | QualType MemPtrType |
15085 | = Context.getMemberPointerType(Fn->getType(), ClassType.getTypePtr()); |
15086 | |
15087 | if (Context.getTargetInfo().getCXXABI().isMicrosoft()) |
15088 | (void)isCompleteType(UnOp->getOperatorLoc(), MemPtrType); |
15089 | |
15090 | return UnaryOperator::Create( |
15091 | Context, SubExpr, UO_AddrOf, MemPtrType, VK_PRValue, OK_Ordinary, |
15092 | UnOp->getOperatorLoc(), false, CurFPFeatureOverrides()); |
15093 | } |
15094 | } |
15095 | Expr *SubExpr = FixOverloadedFunctionReference(UnOp->getSubExpr(), |
15096 | Found, Fn); |
15097 | if (SubExpr == UnOp->getSubExpr()) |
15098 | return UnOp; |
15099 | |
15100 | return UnaryOperator::Create( |
15101 | Context, SubExpr, UO_AddrOf, Context.getPointerType(SubExpr->getType()), |
15102 | VK_PRValue, OK_Ordinary, UnOp->getOperatorLoc(), false, |
15103 | CurFPFeatureOverrides()); |
15104 | } |
15105 | |
15106 | if (UnresolvedLookupExpr *ULE = dyn_cast<UnresolvedLookupExpr>(E)) { |
15107 | |
15108 | TemplateArgumentListInfo TemplateArgsBuffer, *TemplateArgs = nullptr; |
15109 | if (ULE->hasExplicitTemplateArgs()) { |
15110 | ULE->copyTemplateArgumentsInto(TemplateArgsBuffer); |
15111 | TemplateArgs = &TemplateArgsBuffer; |
15112 | } |
15113 | |
15114 | DeclRefExpr *DRE = |
15115 | BuildDeclRefExpr(Fn, Fn->getType(), VK_LValue, ULE->getNameInfo(), |
15116 | ULE->getQualifierLoc(), Found.getDecl(), |
15117 | ULE->getTemplateKeywordLoc(), TemplateArgs); |
15118 | DRE->setHadMultipleCandidates(ULE->getNumDecls() > 1); |
15119 | return DRE; |
15120 | } |
15121 | |
15122 | if (UnresolvedMemberExpr *MemExpr = dyn_cast<UnresolvedMemberExpr>(E)) { |
15123 | |
15124 | TemplateArgumentListInfo TemplateArgsBuffer, *TemplateArgs = nullptr; |
15125 | if (MemExpr->hasExplicitTemplateArgs()) { |
15126 | MemExpr->copyTemplateArgumentsInto(TemplateArgsBuffer); |
15127 | TemplateArgs = &TemplateArgsBuffer; |
15128 | } |
15129 | |
15130 | Expr *Base; |
15131 | |
15132 | |
15133 | |
15134 | if (MemExpr->isImplicitAccess()) { |
15135 | if (cast<CXXMethodDecl>(Fn)->isStatic()) { |
15136 | DeclRefExpr *DRE = BuildDeclRefExpr( |
15137 | Fn, Fn->getType(), VK_LValue, MemExpr->getNameInfo(), |
15138 | MemExpr->getQualifierLoc(), Found.getDecl(), |
15139 | MemExpr->getTemplateKeywordLoc(), TemplateArgs); |
15140 | DRE->setHadMultipleCandidates(MemExpr->getNumDecls() > 1); |
15141 | return DRE; |
15142 | } else { |
15143 | SourceLocation Loc = MemExpr->getMemberLoc(); |
15144 | if (MemExpr->getQualifier()) |
15145 | Loc = MemExpr->getQualifierLoc().getBeginLoc(); |
15146 | Base = |
15147 | BuildCXXThisExpr(Loc, MemExpr->getBaseType(), true); |
15148 | } |
15149 | } else |
15150 | Base = MemExpr->getBase(); |
15151 | |
15152 | ExprValueKind valueKind; |
15153 | QualType type; |
15154 | if (cast<CXXMethodDecl>(Fn)->isStatic()) { |
15155 | valueKind = VK_LValue; |
15156 | type = Fn->getType(); |
15157 | } else { |
15158 | valueKind = VK_PRValue; |
15159 | type = Context.BoundMemberTy; |
15160 | } |
15161 | |
15162 | return BuildMemberExpr( |
15163 | Base, MemExpr->isArrow(), MemExpr->getOperatorLoc(), |
15164 | MemExpr->getQualifierLoc(), MemExpr->getTemplateKeywordLoc(), Fn, Found, |
15165 | true, MemExpr->getMemberNameInfo(), |
15166 | type, valueKind, OK_Ordinary, TemplateArgs); |
15167 | } |
15168 | |
15169 | llvm_unreachable("Invalid reference to overloaded function"); |
15170 | } |
15171 | |
15172 | ExprResult Sema::FixOverloadedFunctionReference(ExprResult E, |
15173 | DeclAccessPair Found, |
15174 | FunctionDecl *Fn) { |
15175 | return FixOverloadedFunctionReference(E.get(), Found, Fn); |
15176 | } |