clang -cc1 -cc1 -triple amd64-unknown-openbsd7.0 -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name SemaInit.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/SemaInit.cpp
1 | |
2 | |
3 | |
4 | |
5 | |
6 | |
7 | |
8 | |
9 | |
10 | |
11 | |
12 | |
13 | #include "clang/AST/ASTContext.h" |
14 | #include "clang/AST/DeclObjC.h" |
15 | #include "clang/AST/ExprCXX.h" |
16 | #include "clang/AST/ExprObjC.h" |
17 | #include "clang/AST/ExprOpenMP.h" |
18 | #include "clang/AST/TypeLoc.h" |
19 | #include "clang/Basic/CharInfo.h" |
20 | #include "clang/Basic/SourceManager.h" |
21 | #include "clang/Basic/TargetInfo.h" |
22 | #include "clang/Sema/Designator.h" |
23 | #include "clang/Sema/Initialization.h" |
24 | #include "clang/Sema/Lookup.h" |
25 | #include "clang/Sema/SemaInternal.h" |
26 | #include "llvm/ADT/APInt.h" |
27 | #include "llvm/ADT/PointerIntPair.h" |
28 | #include "llvm/ADT/SmallString.h" |
29 | #include "llvm/Support/ErrorHandling.h" |
30 | #include "llvm/Support/raw_ostream.h" |
31 | |
32 | using namespace clang; |
33 | |
34 | |
35 | |
36 | |
37 | |
38 | |
39 | |
40 | static bool IsWideCharCompatible(QualType T, ASTContext &Context) { |
41 | if (Context.typesAreCompatible(Context.getWideCharType(), T)) |
42 | return true; |
43 | if (Context.getLangOpts().CPlusPlus || Context.getLangOpts().C11) { |
44 | return Context.typesAreCompatible(Context.Char16Ty, T) || |
45 | Context.typesAreCompatible(Context.Char32Ty, T); |
46 | } |
47 | return false; |
48 | } |
49 | |
50 | enum StringInitFailureKind { |
51 | SIF_None, |
52 | SIF_NarrowStringIntoWideChar, |
53 | SIF_WideStringIntoChar, |
54 | SIF_IncompatWideStringIntoWideChar, |
55 | SIF_UTF8StringIntoPlainChar, |
56 | SIF_PlainStringIntoUTF8Char, |
57 | SIF_Other |
58 | }; |
59 | |
60 | |
61 | |
62 | |
63 | |
64 | static StringInitFailureKind IsStringInit(Expr *Init, const ArrayType *AT, |
65 | ASTContext &Context) { |
66 | if (!isa<ConstantArrayType>(AT) && !isa<IncompleteArrayType>(AT)) |
67 | return SIF_Other; |
68 | |
69 | |
70 | Init = Init->IgnoreParens(); |
71 | |
72 | |
73 | if (isa<ObjCEncodeExpr>(Init) && AT->getElementType()->isCharType()) |
74 | return SIF_None; |
75 | |
76 | |
77 | StringLiteral *SL = dyn_cast<StringLiteral>(Init); |
78 | if (!SL) |
79 | return SIF_Other; |
80 | |
81 | const QualType ElemTy = |
82 | Context.getCanonicalType(AT->getElementType()).getUnqualifiedType(); |
83 | |
84 | switch (SL->getKind()) { |
85 | case StringLiteral::UTF8: |
86 | |
87 | if (ElemTy->isChar8Type()) |
88 | return SIF_None; |
89 | LLVM_FALLTHROUGH; |
90 | case StringLiteral::Ascii: |
91 | |
92 | |
93 | if (ElemTy->isCharType()) |
94 | return (SL->getKind() == StringLiteral::UTF8 && |
95 | Context.getLangOpts().Char8) |
96 | ? SIF_UTF8StringIntoPlainChar |
97 | : SIF_None; |
98 | if (ElemTy->isChar8Type()) |
99 | return SIF_PlainStringIntoUTF8Char; |
100 | if (IsWideCharCompatible(ElemTy, Context)) |
101 | return SIF_NarrowStringIntoWideChar; |
102 | return SIF_Other; |
103 | |
104 | |
105 | |
106 | |
107 | |
108 | case StringLiteral::UTF16: |
109 | if (Context.typesAreCompatible(Context.Char16Ty, ElemTy)) |
110 | return SIF_None; |
111 | if (ElemTy->isCharType() || ElemTy->isChar8Type()) |
112 | return SIF_WideStringIntoChar; |
113 | if (IsWideCharCompatible(ElemTy, Context)) |
114 | return SIF_IncompatWideStringIntoWideChar; |
115 | return SIF_Other; |
116 | case StringLiteral::UTF32: |
117 | if (Context.typesAreCompatible(Context.Char32Ty, ElemTy)) |
118 | return SIF_None; |
119 | if (ElemTy->isCharType() || ElemTy->isChar8Type()) |
120 | return SIF_WideStringIntoChar; |
121 | if (IsWideCharCompatible(ElemTy, Context)) |
122 | return SIF_IncompatWideStringIntoWideChar; |
123 | return SIF_Other; |
124 | case StringLiteral::Wide: |
125 | if (Context.typesAreCompatible(Context.getWideCharType(), ElemTy)) |
126 | return SIF_None; |
127 | if (ElemTy->isCharType() || ElemTy->isChar8Type()) |
128 | return SIF_WideStringIntoChar; |
129 | if (IsWideCharCompatible(ElemTy, Context)) |
130 | return SIF_IncompatWideStringIntoWideChar; |
131 | return SIF_Other; |
132 | } |
133 | |
134 | llvm_unreachable("missed a StringLiteral kind?"); |
135 | } |
136 | |
137 | static StringInitFailureKind IsStringInit(Expr *init, QualType declType, |
138 | ASTContext &Context) { |
139 | const ArrayType *arrayType = Context.getAsArrayType(declType); |
140 | if (!arrayType) |
141 | return SIF_Other; |
142 | return IsStringInit(init, arrayType, Context); |
143 | } |
144 | |
145 | bool Sema::IsStringInit(Expr *Init, const ArrayType *AT) { |
146 | return ::IsStringInit(Init, AT, Context) == SIF_None; |
147 | } |
148 | |
149 | |
150 | |
151 | static void updateStringLiteralType(Expr *E, QualType Ty) { |
152 | while (true) { |
153 | E->setType(Ty); |
154 | E->setValueKind(VK_PRValue); |
155 | if (isa<StringLiteral>(E) || isa<ObjCEncodeExpr>(E)) { |
156 | break; |
157 | } else if (ParenExpr *PE = dyn_cast<ParenExpr>(E)) { |
158 | E = PE->getSubExpr(); |
159 | } else if (UnaryOperator *UO = dyn_cast<UnaryOperator>(E)) { |
160 | assert(UO->getOpcode() == UO_Extension); |
161 | E = UO->getSubExpr(); |
162 | } else if (GenericSelectionExpr *GSE = dyn_cast<GenericSelectionExpr>(E)) { |
163 | E = GSE->getResultExpr(); |
164 | } else if (ChooseExpr *CE = dyn_cast<ChooseExpr>(E)) { |
165 | E = CE->getChosenSubExpr(); |
166 | } else { |
167 | llvm_unreachable("unexpected expr in string literal init"); |
168 | } |
169 | } |
170 | } |
171 | |
172 | |
173 | |
174 | static void updateGNUCompoundLiteralRValue(Expr *E) { |
175 | while (true) { |
176 | E->setValueKind(VK_PRValue); |
177 | if (isa<CompoundLiteralExpr>(E)) { |
178 | break; |
179 | } else if (ParenExpr *PE = dyn_cast<ParenExpr>(E)) { |
180 | E = PE->getSubExpr(); |
181 | } else if (UnaryOperator *UO = dyn_cast<UnaryOperator>(E)) { |
182 | assert(UO->getOpcode() == UO_Extension); |
183 | E = UO->getSubExpr(); |
184 | } else if (GenericSelectionExpr *GSE = dyn_cast<GenericSelectionExpr>(E)) { |
185 | E = GSE->getResultExpr(); |
186 | } else if (ChooseExpr *CE = dyn_cast<ChooseExpr>(E)) { |
187 | E = CE->getChosenSubExpr(); |
188 | } else { |
189 | llvm_unreachable("unexpected expr in array compound literal init"); |
190 | } |
191 | } |
192 | } |
193 | |
194 | static void CheckStringInit(Expr *Str, QualType &DeclT, const ArrayType *AT, |
195 | Sema &S) { |
196 | |
197 | auto *ConstantArrayTy = |
198 | cast<ConstantArrayType>(Str->getType()->getAsArrayTypeUnsafe()); |
199 | uint64_t StrLength = ConstantArrayTy->getSize().getZExtValue(); |
200 | |
201 | if (const IncompleteArrayType *IAT = dyn_cast<IncompleteArrayType>(AT)) { |
202 | |
203 | |
204 | llvm::APInt ConstVal(32, StrLength); |
205 | |
206 | DeclT = S.Context.getConstantArrayType(IAT->getElementType(), |
207 | ConstVal, nullptr, |
208 | ArrayType::Normal, 0); |
209 | updateStringLiteralType(Str, DeclT); |
210 | return; |
211 | } |
212 | |
213 | const ConstantArrayType *CAT = cast<ConstantArrayType>(AT); |
214 | |
215 | |
216 | |
217 | |
218 | if (S.getLangOpts().CPlusPlus) { |
219 | if (StringLiteral *SL = dyn_cast<StringLiteral>(Str->IgnoreParens())) { |
220 | |
221 | |
222 | |
223 | |
224 | if (SL->isPascal()) |
225 | StrLength--; |
226 | } |
227 | |
228 | |
229 | if (StrLength > CAT->getSize().getZExtValue()) |
230 | S.Diag(Str->getBeginLoc(), |
231 | diag::err_initializer_string_for_char_array_too_long) |
232 | << Str->getSourceRange(); |
233 | } else { |
234 | |
235 | if (StrLength-1 > CAT->getSize().getZExtValue()) |
236 | S.Diag(Str->getBeginLoc(), |
237 | diag::ext_initializer_string_for_char_array_too_long) |
238 | << Str->getSourceRange(); |
239 | } |
240 | |
241 | |
242 | |
243 | |
244 | |
245 | updateStringLiteralType(Str, DeclT); |
246 | } |
247 | |
248 | |
249 | |
250 | |
251 | |
252 | namespace { |
253 | |
254 | |
255 | |
256 | |
257 | |
258 | |
259 | |
260 | |
261 | |
262 | |
263 | |
264 | |
265 | |
266 | |
267 | |
268 | |
269 | |
270 | |
271 | |
272 | |
273 | |
274 | |
275 | |
276 | |
277 | |
278 | |
279 | |
280 | |
281 | |
282 | |
283 | |
284 | |
285 | class InitListChecker { |
286 | Sema &SemaRef; |
287 | bool hadError = false; |
288 | bool VerifyOnly; |
289 | bool TreatUnavailableAsInvalid; |
290 | bool InOverloadResolution; |
291 | InitListExpr *FullyStructuredList = nullptr; |
292 | NoInitExpr *DummyExpr = nullptr; |
293 | |
294 | NoInitExpr *getDummyInit() { |
295 | if (!DummyExpr) |
296 | DummyExpr = new (SemaRef.Context) NoInitExpr(SemaRef.Context.VoidTy); |
297 | return DummyExpr; |
298 | } |
299 | |
300 | void CheckImplicitInitList(const InitializedEntity &Entity, |
301 | InitListExpr *ParentIList, QualType T, |
302 | unsigned &Index, InitListExpr *StructuredList, |
303 | unsigned &StructuredIndex); |
304 | void CheckExplicitInitList(const InitializedEntity &Entity, |
305 | InitListExpr *IList, QualType &T, |
306 | InitListExpr *StructuredList, |
307 | bool TopLevelObject = false); |
308 | void CheckListElementTypes(const InitializedEntity &Entity, |
309 | InitListExpr *IList, QualType &DeclType, |
310 | bool SubobjectIsDesignatorContext, |
311 | unsigned &Index, |
312 | InitListExpr *StructuredList, |
313 | unsigned &StructuredIndex, |
314 | bool TopLevelObject = false); |
315 | void CheckSubElementType(const InitializedEntity &Entity, |
316 | InitListExpr *IList, QualType ElemType, |
317 | unsigned &Index, |
318 | InitListExpr *StructuredList, |
319 | unsigned &StructuredIndex, |
320 | bool DirectlyDesignated = false); |
321 | void CheckComplexType(const InitializedEntity &Entity, |
322 | InitListExpr *IList, QualType DeclType, |
323 | unsigned &Index, |
324 | InitListExpr *StructuredList, |
325 | unsigned &StructuredIndex); |
326 | void CheckScalarType(const InitializedEntity &Entity, |
327 | InitListExpr *IList, QualType DeclType, |
328 | unsigned &Index, |
329 | InitListExpr *StructuredList, |
330 | unsigned &StructuredIndex); |
331 | void CheckReferenceType(const InitializedEntity &Entity, |
332 | InitListExpr *IList, QualType DeclType, |
333 | unsigned &Index, |
334 | InitListExpr *StructuredList, |
335 | unsigned &StructuredIndex); |
336 | void CheckVectorType(const InitializedEntity &Entity, |
337 | InitListExpr *IList, QualType DeclType, unsigned &Index, |
338 | InitListExpr *StructuredList, |
339 | unsigned &StructuredIndex); |
340 | void CheckStructUnionTypes(const InitializedEntity &Entity, |
341 | InitListExpr *IList, QualType DeclType, |
342 | CXXRecordDecl::base_class_range Bases, |
343 | RecordDecl::field_iterator Field, |
344 | bool SubobjectIsDesignatorContext, unsigned &Index, |
345 | InitListExpr *StructuredList, |
346 | unsigned &StructuredIndex, |
347 | bool TopLevelObject = false); |
348 | void CheckArrayType(const InitializedEntity &Entity, |
349 | InitListExpr *IList, QualType &DeclType, |
350 | llvm::APSInt elementIndex, |
351 | bool SubobjectIsDesignatorContext, unsigned &Index, |
352 | InitListExpr *StructuredList, |
353 | unsigned &StructuredIndex); |
354 | bool CheckDesignatedInitializer(const InitializedEntity &Entity, |
355 | InitListExpr *IList, DesignatedInitExpr *DIE, |
356 | unsigned DesigIdx, |
357 | QualType &CurrentObjectType, |
358 | RecordDecl::field_iterator *NextField, |
359 | llvm::APSInt *NextElementIndex, |
360 | unsigned &Index, |
361 | InitListExpr *StructuredList, |
362 | unsigned &StructuredIndex, |
363 | bool FinishSubobjectInit, |
364 | bool TopLevelObject); |
365 | InitListExpr *getStructuredSubobjectInit(InitListExpr *IList, unsigned Index, |
366 | QualType CurrentObjectType, |
367 | InitListExpr *StructuredList, |
368 | unsigned StructuredIndex, |
369 | SourceRange InitRange, |
370 | bool IsFullyOverwritten = false); |
371 | void UpdateStructuredListElement(InitListExpr *StructuredList, |
372 | unsigned &StructuredIndex, |
373 | Expr *expr); |
374 | InitListExpr *createInitListExpr(QualType CurrentObjectType, |
375 | SourceRange InitRange, |
376 | unsigned ExpectedNumInits); |
377 | int numArrayElements(QualType DeclType); |
378 | int numStructUnionElements(QualType DeclType); |
379 | |
380 | ExprResult PerformEmptyInit(SourceLocation Loc, |
381 | const InitializedEntity &Entity); |
382 | |
383 | |
384 | void diagnoseInitOverride(Expr *OldInit, SourceRange NewInitRange, |
385 | bool FullyOverwritten = true) { |
386 | |
387 | |
388 | unsigned DiagID = SemaRef.getLangOpts().CPlusPlus |
389 | ? diag::ext_initializer_overrides |
390 | : diag::warn_initializer_overrides; |
391 | |
392 | if (InOverloadResolution && SemaRef.getLangOpts().CPlusPlus) { |
393 | |
394 | |
395 | |
396 | |
397 | |
398 | |
399 | |
400 | |
401 | |
402 | |
403 | |
404 | hadError = true; |
405 | } else if (OldInit->getType().isDestructedType() && !FullyOverwritten) { |
406 | |
407 | |
408 | |
409 | |
410 | |
411 | |
412 | |
413 | DiagID = diag::err_initializer_overrides_destructed; |
414 | } else if (!OldInit->getSourceRange().isValid()) { |
415 | |
416 | |
417 | |
418 | |
419 | |
420 | |
421 | |
422 | |
423 | |
424 | |
425 | |
426 | |
427 | |
428 | return; |
429 | } |
430 | |
431 | if (!VerifyOnly) { |
432 | SemaRef.Diag(NewInitRange.getBegin(), DiagID) |
433 | << NewInitRange << FullyOverwritten << OldInit->getType(); |
434 | SemaRef.Diag(OldInit->getBeginLoc(), diag::note_previous_initializer) |
435 | << (OldInit->HasSideEffects(SemaRef.Context) && FullyOverwritten) |
436 | << OldInit->getSourceRange(); |
437 | } |
438 | } |
439 | |
440 | |
441 | |
442 | |
443 | |
444 | |
445 | |
446 | |
447 | |
448 | |
449 | |
450 | |
451 | |
452 | |
453 | |
454 | |
455 | |
456 | |
457 | |
458 | |
459 | void FillInEmptyInitForBase(unsigned Init, const CXXBaseSpecifier &Base, |
460 | const InitializedEntity &ParentEntity, |
461 | InitListExpr *ILE, bool &RequiresSecondPass, |
462 | bool FillWithNoInit); |
463 | void FillInEmptyInitForField(unsigned Init, FieldDecl *Field, |
464 | const InitializedEntity &ParentEntity, |
465 | InitListExpr *ILE, bool &RequiresSecondPass, |
466 | bool FillWithNoInit = false); |
467 | void FillInEmptyInitializations(const InitializedEntity &Entity, |
468 | InitListExpr *ILE, bool &RequiresSecondPass, |
469 | InitListExpr *OuterILE, unsigned OuterIndex, |
470 | bool FillWithNoInit = false); |
471 | bool CheckFlexibleArrayInit(const InitializedEntity &Entity, |
472 | Expr *InitExpr, FieldDecl *Field, |
473 | bool TopLevelObject); |
474 | void CheckEmptyInitializable(const InitializedEntity &Entity, |
475 | SourceLocation Loc); |
476 | |
477 | public: |
478 | InitListChecker(Sema &S, const InitializedEntity &Entity, InitListExpr *IL, |
479 | QualType &T, bool VerifyOnly, bool TreatUnavailableAsInvalid, |
480 | bool InOverloadResolution = false); |
481 | bool HadError() { return hadError; } |
482 | |
483 | |
484 | |
485 | InitListExpr *getFullyStructuredList() const { return FullyStructuredList; } |
486 | }; |
487 | |
488 | } |
489 | |
490 | ExprResult InitListChecker::PerformEmptyInit(SourceLocation Loc, |
491 | const InitializedEntity &Entity) { |
492 | InitializationKind Kind = InitializationKind::CreateValue(Loc, Loc, Loc, |
493 | true); |
494 | MultiExprArg SubInit; |
495 | Expr *InitExpr; |
496 | InitListExpr DummyInitList(SemaRef.Context, Loc, None, Loc); |
497 | |
498 | |
499 | |
500 | |
501 | |
502 | bool EmptyInitList = SemaRef.getLangOpts().CPlusPlus11 && |
503 | Entity.getType()->getBaseElementTypeUnsafe()->isRecordType(); |
504 | if (EmptyInitList) { |
505 | |
506 | |
507 | |
508 | |
509 | |
510 | |
511 | |
512 | |
513 | |
514 | |
515 | InitExpr = VerifyOnly ? &DummyInitList : new (SemaRef.Context) |
516 | InitListExpr(SemaRef.Context, Loc, None, Loc); |
517 | InitExpr->setType(SemaRef.Context.VoidTy); |
518 | SubInit = InitExpr; |
519 | Kind = InitializationKind::CreateCopy(Loc, Loc); |
520 | } else { |
521 | |
522 | |
523 | } |
524 | |
525 | InitializationSequence InitSeq(SemaRef, Entity, Kind, SubInit); |
526 | |
527 | |
528 | |
529 | |
530 | |
531 | if (!InitSeq && EmptyInitList && InitSeq.getFailureKind() == |
532 | InitializationSequence::FK_ExplicitConstructor) { |
533 | OverloadCandidateSet::iterator Best; |
534 | OverloadingResult O = |
535 | InitSeq.getFailedCandidateSet() |
536 | .BestViableFunction(SemaRef, Kind.getLocation(), Best); |
537 | (void)O; |
538 | assert(O == OR_Success && "Inconsistent overload resolution"); |
539 | CXXConstructorDecl *CtorDecl = cast<CXXConstructorDecl>(Best->Function); |
540 | CXXRecordDecl *R = CtorDecl->getParent(); |
541 | |
542 | if (CtorDecl->getMinRequiredArguments() == 0 && |
543 | CtorDecl->isExplicit() && R->getDeclName() && |
544 | SemaRef.SourceMgr.isInSystemHeader(CtorDecl->getLocation())) { |
545 | bool IsInStd = false; |
546 | for (NamespaceDecl *ND = dyn_cast<NamespaceDecl>(R->getDeclContext()); |
547 | ND && !IsInStd; ND = dyn_cast<NamespaceDecl>(ND->getParent())) { |
548 | if (SemaRef.getStdNamespace()->InEnclosingNamespaceSetOf(ND)) |
549 | IsInStd = true; |
550 | } |
551 | |
552 | if (IsInStd && llvm::StringSwitch<bool>(R->getName()) |
553 | .Cases("basic_string", "deque", "forward_list", true) |
554 | .Cases("list", "map", "multimap", "multiset", true) |
555 | .Cases("priority_queue", "queue", "set", "stack", true) |
556 | .Cases("unordered_map", "unordered_set", "vector", true) |
557 | .Default(false)) { |
558 | InitSeq.InitializeFrom( |
559 | SemaRef, Entity, |
560 | InitializationKind::CreateValue(Loc, Loc, Loc, true), |
561 | MultiExprArg(), false, |
562 | TreatUnavailableAsInvalid); |
563 | |
564 | |
565 | if (!VerifyOnly) { |
566 | SemaRef.Diag(CtorDecl->getLocation(), |
567 | diag::warn_invalid_initializer_from_system_header); |
568 | if (Entity.getKind() == InitializedEntity::EK_Member) |
569 | SemaRef.Diag(Entity.getDecl()->getLocation(), |
570 | diag::note_used_in_initialization_here); |
571 | else if (Entity.getKind() == InitializedEntity::EK_ArrayElement) |
572 | SemaRef.Diag(Loc, diag::note_used_in_initialization_here); |
573 | } |
574 | } |
575 | } |
576 | } |
577 | if (!InitSeq) { |
578 | if (!VerifyOnly) { |
579 | InitSeq.Diagnose(SemaRef, Entity, Kind, SubInit); |
580 | if (Entity.getKind() == InitializedEntity::EK_Member) |
581 | SemaRef.Diag(Entity.getDecl()->getLocation(), |
582 | diag::note_in_omitted_aggregate_initializer) |
583 | << 1 << Entity.getDecl(); |
584 | else if (Entity.getKind() == InitializedEntity::EK_ArrayElement) { |
585 | bool IsTrailingArrayNewMember = |
586 | Entity.getParent() && |
587 | Entity.getParent()->isVariableLengthArrayNew(); |
588 | SemaRef.Diag(Loc, diag::note_in_omitted_aggregate_initializer) |
589 | << (IsTrailingArrayNewMember ? 2 : 0) |
590 | << Entity.getElementIndex(); |
591 | } |
592 | } |
593 | hadError = true; |
594 | return ExprError(); |
595 | } |
596 | |
597 | return VerifyOnly ? ExprResult() |
598 | : InitSeq.Perform(SemaRef, Entity, Kind, SubInit); |
599 | } |
600 | |
601 | void InitListChecker::CheckEmptyInitializable(const InitializedEntity &Entity, |
602 | SourceLocation Loc) { |
603 | |
604 | |
605 | |
606 | if (FullyStructuredList) |
607 | return; |
608 | PerformEmptyInit(Loc, Entity); |
609 | } |
610 | |
611 | void InitListChecker::FillInEmptyInitForBase( |
612 | unsigned Init, const CXXBaseSpecifier &Base, |
613 | const InitializedEntity &ParentEntity, InitListExpr *ILE, |
614 | bool &RequiresSecondPass, bool FillWithNoInit) { |
615 | InitializedEntity BaseEntity = InitializedEntity::InitializeBase( |
616 | SemaRef.Context, &Base, false, &ParentEntity); |
617 | |
618 | if (Init >= ILE->getNumInits() || !ILE->getInit(Init)) { |
619 | ExprResult BaseInit = FillWithNoInit |
620 | ? new (SemaRef.Context) NoInitExpr(Base.getType()) |
621 | : PerformEmptyInit(ILE->getEndLoc(), BaseEntity); |
622 | if (BaseInit.isInvalid()) { |
623 | hadError = true; |
624 | return; |
625 | } |
626 | |
627 | if (!VerifyOnly) { |
628 | assert(Init < ILE->getNumInits() && "should have been expanded"); |
629 | ILE->setInit(Init, BaseInit.getAs<Expr>()); |
630 | } |
631 | } else if (InitListExpr *InnerILE = |
632 | dyn_cast<InitListExpr>(ILE->getInit(Init))) { |
633 | FillInEmptyInitializations(BaseEntity, InnerILE, RequiresSecondPass, |
634 | ILE, Init, FillWithNoInit); |
635 | } else if (DesignatedInitUpdateExpr *InnerDIUE = |
636 | dyn_cast<DesignatedInitUpdateExpr>(ILE->getInit(Init))) { |
637 | FillInEmptyInitializations(BaseEntity, InnerDIUE->getUpdater(), |
638 | RequiresSecondPass, ILE, Init, |
639 | true); |
640 | } |
641 | } |
642 | |
643 | void InitListChecker::FillInEmptyInitForField(unsigned Init, FieldDecl *Field, |
644 | const InitializedEntity &ParentEntity, |
645 | InitListExpr *ILE, |
646 | bool &RequiresSecondPass, |
647 | bool FillWithNoInit) { |
648 | SourceLocation Loc = ILE->getEndLoc(); |
649 | unsigned NumInits = ILE->getNumInits(); |
650 | InitializedEntity MemberEntity |
651 | = InitializedEntity::InitializeMember(Field, &ParentEntity); |
652 | |
653 | if (Init >= NumInits || !ILE->getInit(Init)) { |
654 | if (const RecordType *RType = ILE->getType()->getAs<RecordType>()) |
655 | if (!RType->getDecl()->isUnion()) |
656 | assert((Init < NumInits || VerifyOnly) && |
657 | "This ILE should have been expanded"); |
658 | |
659 | if (FillWithNoInit) { |
660 | assert(!VerifyOnly && "should not fill with no-init in verify-only mode"); |
661 | Expr *Filler = new (SemaRef.Context) NoInitExpr(Field->getType()); |
662 | if (Init < NumInits) |
663 | ILE->setInit(Init, Filler); |
664 | else |
665 | ILE->updateInit(SemaRef.Context, Init, Filler); |
666 | return; |
667 | } |
668 | |
669 | |
670 | |
671 | |
672 | if (Field->hasInClassInitializer()) { |
673 | if (VerifyOnly) |
674 | return; |
675 | |
676 | ExprResult DIE = SemaRef.BuildCXXDefaultInitExpr(Loc, Field); |
677 | if (DIE.isInvalid()) { |
678 | hadError = true; |
679 | return; |
680 | } |
681 | SemaRef.checkInitializerLifetime(MemberEntity, DIE.get()); |
682 | if (Init < NumInits) |
683 | ILE->setInit(Init, DIE.get()); |
684 | else { |
685 | ILE->updateInit(SemaRef.Context, Init, DIE.get()); |
686 | RequiresSecondPass = true; |
687 | } |
688 | return; |
689 | } |
690 | |
691 | if (Field->getType()->isReferenceType()) { |
692 | if (!VerifyOnly) { |
693 | |
694 | |
695 | |
696 | |
697 | SemaRef.Diag(Loc, diag::err_init_reference_member_uninitialized) |
698 | << Field->getType() |
699 | << ILE->getSyntacticForm()->getSourceRange(); |
700 | SemaRef.Diag(Field->getLocation(), |
701 | diag::note_uninit_reference_member); |
702 | } |
703 | hadError = true; |
704 | return; |
705 | } |
706 | |
707 | ExprResult MemberInit = PerformEmptyInit(Loc, MemberEntity); |
708 | if (MemberInit.isInvalid()) { |
709 | hadError = true; |
710 | return; |
711 | } |
712 | |
713 | if (hadError || VerifyOnly) { |
714 | |
715 | } else if (Init < NumInits) { |
716 | ILE->setInit(Init, MemberInit.getAs<Expr>()); |
717 | } else if (!isa<ImplicitValueInitExpr>(MemberInit.get())) { |
718 | |
719 | |
720 | |
721 | |
722 | ILE->updateInit(SemaRef.Context, Init, MemberInit.getAs<Expr>()); |
723 | RequiresSecondPass = true; |
724 | } |
725 | } else if (InitListExpr *InnerILE |
726 | = dyn_cast<InitListExpr>(ILE->getInit(Init))) { |
727 | FillInEmptyInitializations(MemberEntity, InnerILE, |
728 | RequiresSecondPass, ILE, Init, FillWithNoInit); |
729 | } else if (DesignatedInitUpdateExpr *InnerDIUE = |
730 | dyn_cast<DesignatedInitUpdateExpr>(ILE->getInit(Init))) { |
731 | FillInEmptyInitializations(MemberEntity, InnerDIUE->getUpdater(), |
732 | RequiresSecondPass, ILE, Init, |
733 | true); |
734 | } |
735 | } |
736 | |
737 | |
738 | |
739 | |
740 | void |
741 | InitListChecker::FillInEmptyInitializations(const InitializedEntity &Entity, |
742 | InitListExpr *ILE, |
743 | bool &RequiresSecondPass, |
744 | InitListExpr *OuterILE, |
745 | unsigned OuterIndex, |
746 | bool FillWithNoInit) { |
747 | assert((ILE->getType() != SemaRef.Context.VoidTy) && |
748 | "Should not have void type"); |
749 | |
750 | |
751 | |
752 | if (FillWithNoInit && VerifyOnly) |
753 | return; |
754 | |
755 | |
756 | |
757 | |
758 | |
759 | |
760 | |
761 | |
762 | struct UpdateOuterILEWithUpdatedInit { |
763 | InitListExpr *Outer; |
764 | unsigned OuterIndex; |
765 | ~UpdateOuterILEWithUpdatedInit() { |
766 | if (Outer) |
767 | Outer->setInit(OuterIndex, Outer->getInit(OuterIndex)); |
768 | } |
769 | } UpdateOuterRAII = {OuterILE, OuterIndex}; |
770 | |
771 | |
772 | |
773 | if (ILE->isTransparent()) |
774 | return; |
775 | |
776 | if (const RecordType *RType = ILE->getType()->getAs<RecordType>()) { |
777 | const RecordDecl *RDecl = RType->getDecl(); |
778 | if (RDecl->isUnion() && ILE->getInitializedFieldInUnion()) |
779 | FillInEmptyInitForField(0, ILE->getInitializedFieldInUnion(), |
780 | Entity, ILE, RequiresSecondPass, FillWithNoInit); |
781 | else if (RDecl->isUnion() && isa<CXXRecordDecl>(RDecl) && |
782 | cast<CXXRecordDecl>(RDecl)->hasInClassInitializer()) { |
783 | for (auto *Field : RDecl->fields()) { |
784 | if (Field->hasInClassInitializer()) { |
785 | FillInEmptyInitForField(0, Field, Entity, ILE, RequiresSecondPass, |
786 | FillWithNoInit); |
787 | break; |
788 | } |
789 | } |
790 | } else { |
791 | |
792 | |
793 | |
794 | unsigned NumElems = numStructUnionElements(ILE->getType()); |
795 | if (RDecl->hasFlexibleArrayMember()) |
796 | ++NumElems; |
797 | if (!VerifyOnly && ILE->getNumInits() < NumElems) |
798 | ILE->resizeInits(SemaRef.Context, NumElems); |
799 | |
800 | unsigned Init = 0; |
801 | |
802 | if (auto *CXXRD = dyn_cast<CXXRecordDecl>(RDecl)) { |
803 | for (auto &Base : CXXRD->bases()) { |
804 | if (hadError) |
805 | return; |
806 | |
807 | FillInEmptyInitForBase(Init, Base, Entity, ILE, RequiresSecondPass, |
808 | FillWithNoInit); |
809 | ++Init; |
810 | } |
811 | } |
812 | |
813 | for (auto *Field : RDecl->fields()) { |
814 | if (Field->isUnnamedBitfield()) |
815 | continue; |
816 | |
817 | if (hadError) |
818 | return; |
819 | |
820 | FillInEmptyInitForField(Init, Field, Entity, ILE, RequiresSecondPass, |
821 | FillWithNoInit); |
822 | if (hadError) |
823 | return; |
824 | |
825 | ++Init; |
826 | |
827 | |
828 | if (RDecl->isUnion()) |
829 | break; |
830 | } |
831 | } |
832 | |
833 | return; |
834 | } |
835 | |
836 | QualType ElementType; |
837 | |
838 | InitializedEntity ElementEntity = Entity; |
839 | unsigned NumInits = ILE->getNumInits(); |
840 | unsigned NumElements = NumInits; |
841 | if (const ArrayType *AType = SemaRef.Context.getAsArrayType(ILE->getType())) { |
842 | ElementType = AType->getElementType(); |
843 | if (const auto *CAType = dyn_cast<ConstantArrayType>(AType)) |
844 | NumElements = CAType->getSize().getZExtValue(); |
845 | |
846 | |
847 | if (Entity.isVariableLengthArrayNew()) |
848 | ++NumElements; |
849 | ElementEntity = InitializedEntity::InitializeElement(SemaRef.Context, |
850 | 0, Entity); |
851 | } else if (const VectorType *VType = ILE->getType()->getAs<VectorType>()) { |
852 | ElementType = VType->getElementType(); |
853 | NumElements = VType->getNumElements(); |
854 | ElementEntity = InitializedEntity::InitializeElement(SemaRef.Context, |
855 | 0, Entity); |
856 | } else |
857 | ElementType = ILE->getType(); |
858 | |
859 | bool SkipEmptyInitChecks = false; |
860 | for (unsigned Init = 0; Init != NumElements; ++Init) { |
861 | if (hadError) |
862 | return; |
863 | |
864 | if (ElementEntity.getKind() == InitializedEntity::EK_ArrayElement || |
865 | ElementEntity.getKind() == InitializedEntity::EK_VectorElement) |
866 | ElementEntity.setElementIndex(Init); |
867 | |
868 | if (Init >= NumInits && (ILE->hasArrayFiller() || SkipEmptyInitChecks)) |
869 | return; |
870 | |
871 | Expr *InitExpr = (Init < NumInits ? ILE->getInit(Init) : nullptr); |
872 | if (!InitExpr && Init < NumInits && ILE->hasArrayFiller()) |
873 | ILE->setInit(Init, ILE->getArrayFiller()); |
874 | else if (!InitExpr && !ILE->hasArrayFiller()) { |
875 | |
876 | |
877 | if (SkipEmptyInitChecks) |
878 | continue; |
879 | |
880 | Expr *Filler = nullptr; |
881 | |
882 | if (FillWithNoInit) |
883 | Filler = new (SemaRef.Context) NoInitExpr(ElementType); |
884 | else { |
885 | ExprResult ElementInit = |
886 | PerformEmptyInit(ILE->getEndLoc(), ElementEntity); |
887 | if (ElementInit.isInvalid()) { |
888 | hadError = true; |
889 | return; |
890 | } |
891 | |
892 | Filler = ElementInit.getAs<Expr>(); |
893 | } |
894 | |
895 | if (hadError) { |
896 | |
897 | } else if (VerifyOnly) { |
898 | SkipEmptyInitChecks = true; |
899 | } else if (Init < NumInits) { |
900 | |
901 | |
902 | if (ElementEntity.getKind() == InitializedEntity::EK_ArrayElement) |
903 | ILE->setArrayFiller(Filler); |
904 | else |
905 | ILE->setInit(Init, Filler); |
906 | } else { |
907 | |
908 | |
909 | if (ElementEntity.getKind() == InitializedEntity::EK_ArrayElement) { |
910 | ILE->setArrayFiller(Filler); |
911 | return; |
912 | } |
913 | |
914 | if (!isa<ImplicitValueInitExpr>(Filler) && !isa<NoInitExpr>(Filler)) { |
915 | |
916 | |
917 | |
918 | |
919 | ILE->updateInit(SemaRef.Context, Init, Filler); |
920 | RequiresSecondPass = true; |
921 | } |
922 | } |
923 | } else if (InitListExpr *InnerILE |
924 | = dyn_cast_or_null<InitListExpr>(InitExpr)) { |
925 | FillInEmptyInitializations(ElementEntity, InnerILE, RequiresSecondPass, |
926 | ILE, Init, FillWithNoInit); |
927 | } else if (DesignatedInitUpdateExpr *InnerDIUE = |
928 | dyn_cast_or_null<DesignatedInitUpdateExpr>(InitExpr)) { |
929 | FillInEmptyInitializations(ElementEntity, InnerDIUE->getUpdater(), |
930 | RequiresSecondPass, ILE, Init, |
931 | true); |
932 | } |
933 | } |
934 | } |
935 | |
936 | static bool hasAnyDesignatedInits(const InitListExpr *IL) { |
937 | for (const Stmt *Init : *IL) |
938 | if (Init && isa<DesignatedInitExpr>(Init)) |
939 | return true; |
940 | return false; |
941 | } |
942 | |
943 | InitListChecker::InitListChecker(Sema &S, const InitializedEntity &Entity, |
944 | InitListExpr *IL, QualType &T, bool VerifyOnly, |
945 | bool TreatUnavailableAsInvalid, |
946 | bool InOverloadResolution) |
947 | : SemaRef(S), VerifyOnly(VerifyOnly), |
948 | TreatUnavailableAsInvalid(TreatUnavailableAsInvalid), |
949 | InOverloadResolution(InOverloadResolution) { |
950 | if (!VerifyOnly || hasAnyDesignatedInits(IL)) { |
951 | FullyStructuredList = |
952 | createInitListExpr(T, IL->getSourceRange(), IL->getNumInits()); |
953 | |
954 | |
955 | |
956 | if (!VerifyOnly) |
957 | FullyStructuredList->setSyntacticForm(IL); |
958 | } |
959 | |
960 | CheckExplicitInitList(Entity, IL, T, FullyStructuredList, |
961 | true); |
962 | |
963 | if (!hadError && FullyStructuredList) { |
964 | bool RequiresSecondPass = false; |
965 | FillInEmptyInitializations(Entity, FullyStructuredList, RequiresSecondPass, |
966 | nullptr, 0); |
967 | if (RequiresSecondPass && !hadError) |
968 | FillInEmptyInitializations(Entity, FullyStructuredList, |
969 | RequiresSecondPass, nullptr, 0); |
970 | } |
971 | if (hadError && FullyStructuredList) |
972 | FullyStructuredList->markError(); |
973 | } |
974 | |
975 | int InitListChecker::numArrayElements(QualType DeclType) { |
976 | |
977 | int maxElements = 0x7FFFFFFF; |
978 | if (const ConstantArrayType *CAT = |
979 | SemaRef.Context.getAsConstantArrayType(DeclType)) { |
980 | maxElements = static_cast<int>(CAT->getSize().getZExtValue()); |
981 | } |
982 | return maxElements; |
983 | } |
984 | |
985 | int InitListChecker::numStructUnionElements(QualType DeclType) { |
986 | RecordDecl *structDecl = DeclType->castAs<RecordType>()->getDecl(); |
987 | int InitializableMembers = 0; |
988 | if (auto *CXXRD = dyn_cast<CXXRecordDecl>(structDecl)) |
989 | InitializableMembers += CXXRD->getNumBases(); |
990 | for (const auto *Field : structDecl->fields()) |
991 | if (!Field->isUnnamedBitfield()) |
992 | ++InitializableMembers; |
993 | |
994 | if (structDecl->isUnion()) |
995 | return std::min(InitializableMembers, 1); |
996 | return InitializableMembers - structDecl->hasFlexibleArrayMember(); |
997 | } |
998 | |
999 | |
1000 | |
1001 | static bool isIdiomaticBraceElisionEntity(const InitializedEntity &Entity) { |
1002 | |
1003 | |
1004 | |
1005 | |
1006 | |
1007 | |
1008 | |
1009 | |
1010 | if (!Entity.getParent()) |
1011 | return false; |
1012 | |
1013 | |
1014 | if (Entity.getKind() == InitializedEntity::EK_Base) { |
1015 | auto *ParentRD = |
1016 | Entity.getParent()->getType()->castAs<RecordType>()->getDecl(); |
1017 | CXXRecordDecl *CXXRD = cast<CXXRecordDecl>(ParentRD); |
1018 | return CXXRD->getNumBases() == 1 && CXXRD->field_empty(); |
1019 | } |
1020 | |
1021 | |
1022 | if (Entity.getKind() == InitializedEntity::EK_Member) { |
1023 | auto *ParentRD = |
1024 | Entity.getParent()->getType()->castAs<RecordType>()->getDecl(); |
1025 | if (CXXRecordDecl *CXXRD = dyn_cast<CXXRecordDecl>(ParentRD)) { |
1026 | if (CXXRD->getNumBases()) { |
1027 | return false; |
1028 | } |
1029 | } |
1030 | auto FieldIt = ParentRD->field_begin(); |
1031 | assert(FieldIt != ParentRD->field_end() && |
1032 | "no fields but have initializer for member?"); |
1033 | return ++FieldIt == ParentRD->field_end(); |
1034 | } |
1035 | |
1036 | return false; |
1037 | } |
1038 | |
1039 | |
1040 | |
1041 | |
1042 | |
1043 | |
1044 | |
1045 | void InitListChecker::CheckImplicitInitList(const InitializedEntity &Entity, |
1046 | InitListExpr *ParentIList, |
1047 | QualType T, unsigned &Index, |
1048 | InitListExpr *StructuredList, |
1049 | unsigned &StructuredIndex) { |
1050 | int maxElements = 0; |
1051 | |
1052 | if (T->isArrayType()) |
1053 | maxElements = numArrayElements(T); |
1054 | else if (T->isRecordType()) |
1055 | maxElements = numStructUnionElements(T); |
1056 | else if (T->isVectorType()) |
1057 | maxElements = T->castAs<VectorType>()->getNumElements(); |
1058 | else |
1059 | llvm_unreachable("CheckImplicitInitList(): Illegal type"); |
1060 | |
1061 | if (maxElements == 0) { |
1062 | if (!VerifyOnly) |
1063 | SemaRef.Diag(ParentIList->getInit(Index)->getBeginLoc(), |
1064 | diag::err_implicit_empty_initializer); |
1065 | ++Index; |
1066 | hadError = true; |
1067 | return; |
1068 | } |
1069 | |
1070 | |
1071 | InitListExpr *StructuredSubobjectInitList = getStructuredSubobjectInit( |
1072 | ParentIList, Index, T, StructuredList, StructuredIndex, |
1073 | SourceRange(ParentIList->getInit(Index)->getBeginLoc(), |
1074 | ParentIList->getSourceRange().getEnd())); |
1075 | unsigned StructuredSubobjectInitIndex = 0; |
1076 | |
1077 | |
1078 | unsigned StartIndex = Index; |
1079 | CheckListElementTypes(Entity, ParentIList, T, |
1080 | false, Index, |
1081 | StructuredSubobjectInitList, |
1082 | StructuredSubobjectInitIndex); |
1083 | |
1084 | if (StructuredSubobjectInitList) { |
1085 | StructuredSubobjectInitList->setType(T); |
1086 | |
1087 | unsigned EndIndex = (Index == StartIndex? StartIndex : Index - 1); |
1088 | |
1089 | |
1090 | if (EndIndex < ParentIList->getNumInits() && |
1091 | ParentIList->getInit(EndIndex)) { |
1092 | SourceLocation EndLoc |
1093 | = ParentIList->getInit(EndIndex)->getSourceRange().getEnd(); |
1094 | StructuredSubobjectInitList->setRBraceLoc(EndLoc); |
1095 | } |
1096 | |
1097 | |
1098 | if (!VerifyOnly && (T->isArrayType() || T->isRecordType()) && |
1099 | !ParentIList->isIdiomaticZeroInitializer(SemaRef.getLangOpts()) && |
1100 | !isIdiomaticBraceElisionEntity(Entity)) { |
1101 | SemaRef.Diag(StructuredSubobjectInitList->getBeginLoc(), |
1102 | diag::warn_missing_braces) |
1103 | << StructuredSubobjectInitList->getSourceRange() |
1104 | << FixItHint::CreateInsertion( |
1105 | StructuredSubobjectInitList->getBeginLoc(), "{") |
1106 | << FixItHint::CreateInsertion( |
1107 | SemaRef.getLocForEndOfToken( |
1108 | StructuredSubobjectInitList->getEndLoc()), |
1109 | "}"); |
1110 | } |
1111 | |
1112 | |
1113 | auto *CXXRD = T->getAsCXXRecordDecl(); |
1114 | if (!VerifyOnly && CXXRD && CXXRD->hasUserDeclaredConstructor()) { |
1115 | SemaRef.Diag(StructuredSubobjectInitList->getBeginLoc(), |
1116 | diag::warn_cxx20_compat_aggregate_init_with_ctors) |
1117 | << StructuredSubobjectInitList->getSourceRange() << T; |
1118 | } |
1119 | } |
1120 | } |
1121 | |
1122 | |
1123 | |
1124 | static void warnBracedScalarInit(Sema &S, const InitializedEntity &Entity, |
1125 | SourceRange Braces) { |
1126 | |
1127 | |
1128 | |
1129 | if (S.inTemplateInstantiation()) |
1130 | return; |
1131 | |
1132 | unsigned DiagID = 0; |
1133 | |
1134 | switch (Entity.getKind()) { |
1135 | case InitializedEntity::EK_VectorElement: |
1136 | case InitializedEntity::EK_ComplexElement: |
1137 | case InitializedEntity::EK_ArrayElement: |
1138 | case InitializedEntity::EK_Parameter: |
1139 | case InitializedEntity::EK_Parameter_CF_Audited: |
1140 | case InitializedEntity::EK_TemplateParameter: |
1141 | case InitializedEntity::EK_Result: |
1142 | |
1143 | DiagID = diag::warn_braces_around_init; |
1144 | break; |
1145 | |
1146 | case InitializedEntity::EK_Member: |
1147 | |
1148 | |
1149 | if (Entity.getParent()) |
1150 | DiagID = diag::warn_braces_around_init; |
1151 | break; |
1152 | |
1153 | case InitializedEntity::EK_Variable: |
1154 | case InitializedEntity::EK_LambdaCapture: |
1155 | |
1156 | |
1157 | break; |
1158 | |
1159 | case InitializedEntity::EK_New: |
1160 | case InitializedEntity::EK_Temporary: |
1161 | case InitializedEntity::EK_CompoundLiteralInit: |
1162 | |
1163 | break; |
1164 | |
1165 | case InitializedEntity::EK_RelatedResult: |
1166 | |
1167 | break; |
1168 | |
1169 | case InitializedEntity::EK_Exception: |
1170 | case InitializedEntity::EK_Base: |
1171 | case InitializedEntity::EK_Delegating: |
1172 | case InitializedEntity::EK_BlockElement: |
1173 | case InitializedEntity::EK_LambdaToBlockConversionBlockElement: |
1174 | case InitializedEntity::EK_Binding: |
1175 | case InitializedEntity::EK_StmtExprResult: |
1176 | llvm_unreachable("unexpected braced scalar init"); |
1177 | } |
1178 | |
1179 | if (DiagID) { |
1180 | S.Diag(Braces.getBegin(), DiagID) |
1181 | << Entity.getType()->isSizelessBuiltinType() << Braces |
1182 | << FixItHint::CreateRemoval(Braces.getBegin()) |
1183 | << FixItHint::CreateRemoval(Braces.getEnd()); |
1184 | } |
1185 | } |
1186 | |
1187 | |
1188 | |
1189 | |
1190 | |
1191 | |
1192 | void InitListChecker::CheckExplicitInitList(const InitializedEntity &Entity, |
1193 | InitListExpr *IList, QualType &T, |
1194 | InitListExpr *StructuredList, |
1195 | bool TopLevelObject) { |
1196 | unsigned Index = 0, StructuredIndex = 0; |
1197 | CheckListElementTypes(Entity, IList, T, true, |
1198 | Index, StructuredList, StructuredIndex, TopLevelObject); |
1199 | if (StructuredList) { |
1200 | QualType ExprTy = T; |
1201 | if (!ExprTy->isArrayType()) |
1202 | ExprTy = ExprTy.getNonLValueExprType(SemaRef.Context); |
1203 | if (!VerifyOnly) |
1204 | IList->setType(ExprTy); |
1205 | StructuredList->setType(ExprTy); |
1206 | } |
1207 | if (hadError) |
1208 | return; |
1209 | |
1210 | |
1211 | if (Index < IList->getNumInits() && !T->isIncompleteType()) { |
1212 | |
1213 | bool ExtraInitsIsError = SemaRef.getLangOpts().CPlusPlus || |
1214 | (SemaRef.getLangOpts().OpenCL && T->isVectorType()); |
1215 | hadError = ExtraInitsIsError; |
1216 | if (VerifyOnly) { |
1217 | return; |
1218 | } else if (StructuredIndex == 1 && |
1219 | IsStringInit(StructuredList->getInit(0), T, SemaRef.Context) == |
1220 | SIF_None) { |
1221 | unsigned DK = |
1222 | ExtraInitsIsError |
1223 | ? diag::err_excess_initializers_in_char_array_initializer |
1224 | : diag::ext_excess_initializers_in_char_array_initializer; |
1225 | SemaRef.Diag(IList->getInit(Index)->getBeginLoc(), DK) |
1226 | << IList->getInit(Index)->getSourceRange(); |
1227 | } else if (T->isSizelessBuiltinType()) { |
1228 | unsigned DK = ExtraInitsIsError |
1229 | ? diag::err_excess_initializers_for_sizeless_type |
1230 | : diag::ext_excess_initializers_for_sizeless_type; |
1231 | SemaRef.Diag(IList->getInit(Index)->getBeginLoc(), DK) |
1232 | << T << IList->getInit(Index)->getSourceRange(); |
1233 | } else { |
1234 | int initKind = T->isArrayType() ? 0 : |
1235 | T->isVectorType() ? 1 : |
1236 | T->isScalarType() ? 2 : |
1237 | T->isUnionType() ? 3 : |
1238 | 4; |
1239 | |
1240 | unsigned DK = ExtraInitsIsError ? diag::err_excess_initializers |
1241 | : diag::ext_excess_initializers; |
1242 | SemaRef.Diag(IList->getInit(Index)->getBeginLoc(), DK) |
1243 | << initKind << IList->getInit(Index)->getSourceRange(); |
1244 | } |
1245 | } |
1246 | |
1247 | if (!VerifyOnly) { |
1248 | if (T->isScalarType() && IList->getNumInits() == 1 && |
1249 | !isa<InitListExpr>(IList->getInit(0))) |
1250 | warnBracedScalarInit(SemaRef, Entity, IList->getSourceRange()); |
1251 | |
1252 | |
1253 | |
1254 | auto *CXXRD = T->getAsCXXRecordDecl(); |
1255 | if (CXXRD && CXXRD->hasUserDeclaredConstructor()) { |
1256 | |
1257 | |
1258 | bool HasEquivCtor = false; |
1259 | if (IList->getNumInits() == 0) { |
1260 | auto *CD = SemaRef.LookupDefaultConstructor(CXXRD); |
1261 | HasEquivCtor = CD && !CD->isDeleted(); |
1262 | } |
1263 | |
1264 | if (!HasEquivCtor) { |
1265 | SemaRef.Diag(IList->getBeginLoc(), |
1266 | diag::warn_cxx20_compat_aggregate_init_with_ctors) |
1267 | << IList->getSourceRange() << T; |
1268 | } |
1269 | } |
1270 | } |
1271 | } |
1272 | |
1273 | void InitListChecker::CheckListElementTypes(const InitializedEntity &Entity, |
1274 | InitListExpr *IList, |
1275 | QualType &DeclType, |
1276 | bool SubobjectIsDesignatorContext, |
1277 | unsigned &Index, |
1278 | InitListExpr *StructuredList, |
1279 | unsigned &StructuredIndex, |
1280 | bool TopLevelObject) { |
1281 | if (DeclType->isAnyComplexType() && SubobjectIsDesignatorContext) { |
1282 | |
1283 | |
1284 | CheckComplexType(Entity, IList, DeclType, Index, |
1285 | StructuredList, StructuredIndex); |
1286 | } else if (DeclType->isScalarType()) { |
1287 | CheckScalarType(Entity, IList, DeclType, Index, |
1288 | StructuredList, StructuredIndex); |
1289 | } else if (DeclType->isVectorType()) { |
1290 | CheckVectorType(Entity, IList, DeclType, Index, |
1291 | StructuredList, StructuredIndex); |
1292 | } else if (DeclType->isRecordType()) { |
1293 | assert(DeclType->isAggregateType() && |
1294 | "non-aggregate records should be handed in CheckSubElementType"); |
1295 | RecordDecl *RD = DeclType->castAs<RecordType>()->getDecl(); |
1296 | auto Bases = |
1297 | CXXRecordDecl::base_class_range(CXXRecordDecl::base_class_iterator(), |
1298 | CXXRecordDecl::base_class_iterator()); |
1299 | if (auto *CXXRD = dyn_cast<CXXRecordDecl>(RD)) |
1300 | Bases = CXXRD->bases(); |
1301 | CheckStructUnionTypes(Entity, IList, DeclType, Bases, RD->field_begin(), |
1302 | SubobjectIsDesignatorContext, Index, StructuredList, |
1303 | StructuredIndex, TopLevelObject); |
1304 | } else if (DeclType->isArrayType()) { |
1305 | llvm::APSInt Zero( |
1306 | SemaRef.Context.getTypeSize(SemaRef.Context.getSizeType()), |
1307 | false); |
1308 | CheckArrayType(Entity, IList, DeclType, Zero, |
1309 | SubobjectIsDesignatorContext, Index, |
1310 | StructuredList, StructuredIndex); |
1311 | } else if (DeclType->isVoidType() || DeclType->isFunctionType()) { |
1312 | |
1313 | ++Index; |
1314 | if (!VerifyOnly) |
1315 | SemaRef.Diag(IList->getBeginLoc(), diag::err_illegal_initializer_type) |
1316 | << DeclType; |
1317 | hadError = true; |
1318 | } else if (DeclType->isReferenceType()) { |
1319 | CheckReferenceType(Entity, IList, DeclType, Index, |
1320 | StructuredList, StructuredIndex); |
1321 | } else if (DeclType->isObjCObjectType()) { |
1322 | if (!VerifyOnly) |
1323 | SemaRef.Diag(IList->getBeginLoc(), diag::err_init_objc_class) << DeclType; |
1324 | hadError = true; |
1325 | } else if (DeclType->isOCLIntelSubgroupAVCType() || |
1326 | DeclType->isSizelessBuiltinType()) { |
1327 | |
1328 | CheckScalarType(Entity, IList, DeclType, Index, StructuredList, |
1329 | StructuredIndex); |
1330 | } else { |
1331 | if (!VerifyOnly) |
1332 | SemaRef.Diag(IList->getBeginLoc(), diag::err_illegal_initializer_type) |
1333 | << DeclType; |
1334 | hadError = true; |
1335 | } |
1336 | } |
1337 | |
1338 | void InitListChecker::CheckSubElementType(const InitializedEntity &Entity, |
1339 | InitListExpr *IList, |
1340 | QualType ElemType, |
1341 | unsigned &Index, |
1342 | InitListExpr *StructuredList, |
1343 | unsigned &StructuredIndex, |
1344 | bool DirectlyDesignated) { |
1345 | Expr *expr = IList->getInit(Index); |
1346 | |
1347 | if (ElemType->isReferenceType()) |
1348 | return CheckReferenceType(Entity, IList, ElemType, Index, |
1349 | StructuredList, StructuredIndex); |
1350 | |
1351 | if (InitListExpr *SubInitList = dyn_cast<InitListExpr>(expr)) { |
1352 | if (SubInitList->getNumInits() == 1 && |
1353 | IsStringInit(SubInitList->getInit(0), ElemType, SemaRef.Context) == |
1354 | SIF_None) { |
1355 | |
1356 | |
1357 | expr = SubInitList->getInit(0); |
1358 | } |
1359 | |
1360 | } else if (isa<ImplicitValueInitExpr>(expr)) { |
1361 | |
1362 | |
1363 | assert(SemaRef.Context.hasSameType(expr->getType(), ElemType) && |
1364 | "found implicit initialization for the wrong type"); |
1365 | UpdateStructuredListElement(StructuredList, StructuredIndex, expr); |
1366 | ++Index; |
1367 | return; |
1368 | } |
1369 | |
1370 | if (SemaRef.getLangOpts().CPlusPlus || isa<InitListExpr>(expr)) { |
1371 | |
1372 | |
1373 | |
1374 | |
1375 | |
1376 | InitializationKind Kind = |
1377 | InitializationKind::CreateCopy(expr->getBeginLoc(), SourceLocation()); |
1378 | |
1379 | |
1380 | |
1381 | |
1382 | auto TmpEntity = |
1383 | (ElemType->isExtVectorType() && !Entity.getType()->isExtVectorType()) |
1384 | ? InitializedEntity::InitializeTemporary(ElemType) |
1385 | : Entity; |
1386 | |
1387 | InitializationSequence Seq(SemaRef, TmpEntity, Kind, expr, |
1388 | true); |
1389 | |
1390 | |
1391 | |
1392 | |
1393 | |
1394 | |
1395 | |
1396 | if (Seq || isa<InitListExpr>(expr)) { |
1397 | if (!VerifyOnly) { |
1398 | ExprResult Result = Seq.Perform(SemaRef, TmpEntity, Kind, expr); |
1399 | if (Result.isInvalid()) |
1400 | hadError = true; |
1401 | |
1402 | UpdateStructuredListElement(StructuredList, StructuredIndex, |
1403 | Result.getAs<Expr>()); |
1404 | } else if (!Seq) { |
1405 | hadError = true; |
1406 | } else if (StructuredList) { |
1407 | UpdateStructuredListElement(StructuredList, StructuredIndex, |
1408 | getDummyInit()); |
1409 | } |
1410 | ++Index; |
1411 | return; |
1412 | } |
1413 | |
1414 | |
1415 | } else if (ElemType->isScalarType() || ElemType->isAtomicType()) { |
1416 | |
1417 | return CheckScalarType(Entity, IList, ElemType, Index, |
1418 | StructuredList, StructuredIndex); |
1419 | } else if (const ArrayType *arrayType = |
1420 | SemaRef.Context.getAsArrayType(ElemType)) { |
1421 | |
1422 | |
1423 | |
1424 | |
1425 | if (IsStringInit(expr, arrayType, SemaRef.Context) == SIF_None) { |
1426 | |
1427 | if (!VerifyOnly) |
1428 | CheckStringInit(expr, ElemType, arrayType, SemaRef); |
1429 | if (StructuredList) |
1430 | UpdateStructuredListElement(StructuredList, StructuredIndex, expr); |
1431 | ++Index; |
1432 | return; |
1433 | } |
1434 | |
1435 | |
1436 | |
1437 | } else { |
1438 | assert((ElemType->isRecordType() || ElemType->isVectorType() || |
1439 | ElemType->isOpenCLSpecificType()) && "Unexpected type"); |
1440 | |
1441 | |
1442 | |
1443 | |
1444 | |
1445 | |
1446 | |
1447 | |
1448 | |
1449 | ExprResult ExprRes = expr; |
1450 | if (SemaRef.CheckSingleAssignmentConstraints( |
1451 | ElemType, ExprRes, !VerifyOnly) != Sema::Incompatible) { |
1452 | if (ExprRes.isInvalid()) |
1453 | hadError = true; |
1454 | else { |
1455 | ExprRes = SemaRef.DefaultFunctionArrayLvalueConversion(ExprRes.get()); |
1456 | if (ExprRes.isInvalid()) |
1457 | hadError = true; |
1458 | } |
1459 | UpdateStructuredListElement(StructuredList, StructuredIndex, |
1460 | ExprRes.getAs<Expr>()); |
1461 | ++Index; |
1462 | return; |
1463 | } |
1464 | ExprRes.get(); |
1465 | |
1466 | } |
1467 | |
1468 | |
1469 | |
1470 | |
1471 | |
1472 | |
1473 | |
1474 | |
1475 | if ((!SemaRef.getLangOpts().OpenCL && ElemType->isVectorType()) || |
1476 | ElemType->isAggregateType()) { |
1477 | CheckImplicitInitList(Entity, IList, ElemType, Index, StructuredList, |
1478 | StructuredIndex); |
1479 | ++StructuredIndex; |
1480 | |
1481 | |
1482 | if (DirectlyDesignated && SemaRef.getLangOpts().CPlusPlus && !hadError) { |
1483 | if (InOverloadResolution) |
1484 | hadError = true; |
1485 | if (!VerifyOnly) { |
1486 | SemaRef.Diag(expr->getBeginLoc(), |
1487 | diag::ext_designated_init_brace_elision) |
1488 | << expr->getSourceRange() |
1489 | << FixItHint::CreateInsertion(expr->getBeginLoc(), "{") |
1490 | << FixItHint::CreateInsertion( |
1491 | SemaRef.getLocForEndOfToken(expr->getEndLoc()), "}"); |
1492 | } |
1493 | } |
1494 | } else { |
1495 | if (!VerifyOnly) { |
1496 | |
1497 | |
1498 | |
1499 | ExprResult Copy = |
1500 | SemaRef.PerformCopyInitialization(Entity, SourceLocation(), expr, |
1501 | true); |
1502 | (void)Copy; |
1503 | assert(Copy.isInvalid() && |
1504 | "expected non-aggregate initialization to fail"); |
1505 | } |
1506 | hadError = true; |
1507 | ++Index; |
1508 | ++StructuredIndex; |
1509 | } |
1510 | } |
1511 | |
1512 | void InitListChecker::CheckComplexType(const InitializedEntity &Entity, |
1513 | InitListExpr *IList, QualType DeclType, |
1514 | unsigned &Index, |
1515 | InitListExpr *StructuredList, |
1516 | unsigned &StructuredIndex) { |
1517 | assert(Index == 0 && "Index in explicit init list must be zero"); |
1518 | |
1519 | |
1520 | |
1521 | |
1522 | |
1523 | |
1524 | |
1525 | |
1526 | if (IList->getNumInits() != 2) |
1527 | return CheckScalarType(Entity, IList, DeclType, Index, StructuredList, |
1528 | StructuredIndex); |
1529 | |
1530 | |
1531 | |
1532 | if (!SemaRef.getLangOpts().CPlusPlus && !VerifyOnly) |
1533 | SemaRef.Diag(IList->getBeginLoc(), diag::ext_complex_component_init) |
1534 | << IList->getSourceRange(); |
1535 | |
1536 | |
1537 | QualType elementType = DeclType->castAs<ComplexType>()->getElementType(); |
1538 | InitializedEntity ElementEntity = |
1539 | InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); |
1540 | |
1541 | for (unsigned i = 0; i < 2; ++i) { |
1542 | ElementEntity.setElementIndex(Index); |
1543 | CheckSubElementType(ElementEntity, IList, elementType, Index, |
1544 | StructuredList, StructuredIndex); |
1545 | } |
1546 | } |
1547 | |
1548 | void InitListChecker::CheckScalarType(const InitializedEntity &Entity, |
1549 | InitListExpr *IList, QualType DeclType, |
1550 | unsigned &Index, |
1551 | InitListExpr *StructuredList, |
1552 | unsigned &StructuredIndex) { |
1553 | if (Index >= IList->getNumInits()) { |
1554 | if (!VerifyOnly) { |
1555 | if (DeclType->isSizelessBuiltinType()) |
1556 | SemaRef.Diag(IList->getBeginLoc(), |
1557 | SemaRef.getLangOpts().CPlusPlus11 |
1558 | ? diag::warn_cxx98_compat_empty_sizeless_initializer |
1559 | : diag::err_empty_sizeless_initializer) |
1560 | << DeclType << IList->getSourceRange(); |
1561 | else |
1562 | SemaRef.Diag(IList->getBeginLoc(), |
1563 | SemaRef.getLangOpts().CPlusPlus11 |
1564 | ? diag::warn_cxx98_compat_empty_scalar_initializer |
1565 | : diag::err_empty_scalar_initializer) |
1566 | << IList->getSourceRange(); |
1567 | } |
1568 | hadError = !SemaRef.getLangOpts().CPlusPlus11; |
1569 | ++Index; |
1570 | ++StructuredIndex; |
1571 | return; |
1572 | } |
1573 | |
1574 | Expr *expr = IList->getInit(Index); |
1575 | if (InitListExpr *SubIList = dyn_cast<InitListExpr>(expr)) { |
1576 | |
1577 | |
1578 | if (!VerifyOnly) |
1579 | SemaRef.Diag(SubIList->getBeginLoc(), diag::ext_many_braces_around_init) |
1580 | << DeclType->isSizelessBuiltinType() << SubIList->getSourceRange(); |
1581 | |
1582 | CheckScalarType(Entity, SubIList, DeclType, Index, StructuredList, |
1583 | StructuredIndex); |
1584 | return; |
1585 | } else if (isa<DesignatedInitExpr>(expr)) { |
1586 | if (!VerifyOnly) |
1587 | SemaRef.Diag(expr->getBeginLoc(), |
1588 | diag::err_designator_for_scalar_or_sizeless_init) |
1589 | << DeclType->isSizelessBuiltinType() << DeclType |
1590 | << expr->getSourceRange(); |
1591 | hadError = true; |
1592 | ++Index; |
1593 | ++StructuredIndex; |
1594 | return; |
1595 | } |
1596 | |
1597 | ExprResult Result; |
1598 | if (VerifyOnly) { |
1599 | if (SemaRef.CanPerformCopyInitialization(Entity, expr)) |
1600 | Result = getDummyInit(); |
1601 | else |
1602 | Result = ExprError(); |
1603 | } else { |
1604 | Result = |
1605 | SemaRef.PerformCopyInitialization(Entity, expr->getBeginLoc(), expr, |
1606 | true); |
1607 | } |
1608 | |
1609 | Expr *ResultExpr = nullptr; |
1610 | |
1611 | if (Result.isInvalid()) |
1612 | hadError = true; |
1613 | else { |
1614 | ResultExpr = Result.getAs<Expr>(); |
1615 | |
1616 | if (ResultExpr != expr && !VerifyOnly) { |
1617 | |
1618 | |
1619 | IList->setInit(Index, ResultExpr); |
1620 | } |
1621 | } |
1622 | UpdateStructuredListElement(StructuredList, StructuredIndex, ResultExpr); |
1623 | ++Index; |
1624 | } |
1625 | |
1626 | void InitListChecker::CheckReferenceType(const InitializedEntity &Entity, |
1627 | InitListExpr *IList, QualType DeclType, |
1628 | unsigned &Index, |
1629 | InitListExpr *StructuredList, |
1630 | unsigned &StructuredIndex) { |
1631 | if (Index >= IList->getNumInits()) { |
1632 | |
1633 | |
1634 | |
1635 | |
1636 | if (!VerifyOnly) |
1637 | SemaRef.Diag(IList->getBeginLoc(), |
1638 | diag::err_init_reference_member_uninitialized) |
1639 | << DeclType << IList->getSourceRange(); |
1640 | hadError = true; |
1641 | ++Index; |
1642 | ++StructuredIndex; |
1643 | return; |
1644 | } |
1645 | |
1646 | Expr *expr = IList->getInit(Index); |
1647 | if (isa<InitListExpr>(expr) && !SemaRef.getLangOpts().CPlusPlus11) { |
1648 | if (!VerifyOnly) |
1649 | SemaRef.Diag(IList->getBeginLoc(), diag::err_init_non_aggr_init_list) |
1650 | << DeclType << IList->getSourceRange(); |
1651 | hadError = true; |
1652 | ++Index; |
1653 | ++StructuredIndex; |
1654 | return; |
1655 | } |
1656 | |
1657 | ExprResult Result; |
1658 | if (VerifyOnly) { |
1659 | if (SemaRef.CanPerformCopyInitialization(Entity,expr)) |
1660 | Result = getDummyInit(); |
1661 | else |
1662 | Result = ExprError(); |
1663 | } else { |
1664 | Result = |
1665 | SemaRef.PerformCopyInitialization(Entity, expr->getBeginLoc(), expr, |
1666 | true); |
1667 | } |
1668 | |
1669 | if (Result.isInvalid()) |
1670 | hadError = true; |
1671 | |
1672 | expr = Result.getAs<Expr>(); |
1673 | |
1674 | if (!VerifyOnly && expr) |
1675 | IList->setInit(Index, expr); |
1676 | |
1677 | UpdateStructuredListElement(StructuredList, StructuredIndex, expr); |
1678 | ++Index; |
1679 | } |
1680 | |
1681 | void InitListChecker::CheckVectorType(const InitializedEntity &Entity, |
1682 | InitListExpr *IList, QualType DeclType, |
1683 | unsigned &Index, |
1684 | InitListExpr *StructuredList, |
1685 | unsigned &StructuredIndex) { |
1686 | const VectorType *VT = DeclType->castAs<VectorType>(); |
1687 | unsigned maxElements = VT->getNumElements(); |
1688 | unsigned numEltsInit = 0; |
1689 | QualType elementType = VT->getElementType(); |
1690 | |
1691 | if (Index >= IList->getNumInits()) { |
1692 | |
1693 | CheckEmptyInitializable( |
1694 | InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity), |
1695 | IList->getEndLoc()); |
1696 | return; |
1697 | } |
1698 | |
1699 | if (!SemaRef.getLangOpts().OpenCL) { |
1700 | |
1701 | |
1702 | Expr *Init = IList->getInit(Index); |
1703 | if (!isa<InitListExpr>(Init) && Init->getType()->isVectorType()) { |
1704 | ExprResult Result; |
1705 | if (VerifyOnly) { |
1706 | if (SemaRef.CanPerformCopyInitialization(Entity, Init)) |
1707 | Result = getDummyInit(); |
1708 | else |
1709 | Result = ExprError(); |
1710 | } else { |
1711 | Result = |
1712 | SemaRef.PerformCopyInitialization(Entity, Init->getBeginLoc(), Init, |
1713 | true); |
1714 | } |
1715 | |
1716 | Expr *ResultExpr = nullptr; |
1717 | if (Result.isInvalid()) |
1718 | hadError = true; |
1719 | else { |
1720 | ResultExpr = Result.getAs<Expr>(); |
1721 | |
1722 | if (ResultExpr != Init && !VerifyOnly) { |
1723 | |
1724 | |
1725 | IList->setInit(Index, ResultExpr); |
1726 | } |
1727 | } |
1728 | UpdateStructuredListElement(StructuredList, StructuredIndex, ResultExpr); |
1729 | ++Index; |
1730 | return; |
1731 | } |
1732 | |
1733 | InitializedEntity ElementEntity = |
1734 | InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); |
1735 | |
1736 | for (unsigned i = 0; i < maxElements; ++i, ++numEltsInit) { |
1737 | |
1738 | if (Index >= IList->getNumInits()) { |
1739 | CheckEmptyInitializable(ElementEntity, IList->getEndLoc()); |
1740 | break; |
1741 | } |
1742 | |
1743 | ElementEntity.setElementIndex(Index); |
1744 | CheckSubElementType(ElementEntity, IList, elementType, Index, |
1745 | StructuredList, StructuredIndex); |
1746 | } |
1747 | |
1748 | if (VerifyOnly) |
1749 | return; |
1750 | |
1751 | bool isBigEndian = SemaRef.Context.getTargetInfo().isBigEndian(); |
1752 | const VectorType *T = Entity.getType()->castAs<VectorType>(); |
1753 | if (isBigEndian && (T->getVectorKind() == VectorType::NeonVector || |
1754 | T->getVectorKind() == VectorType::NeonPolyVector)) { |
1755 | |
1756 | |
1757 | |
1758 | |
1759 | |
1760 | |
1761 | |
1762 | |
1763 | |
1764 | |
1765 | SemaRef.Diag(IList->getBeginLoc(), |
1766 | diag::warn_neon_vector_initializer_non_portable); |
1767 | |
1768 | const char *typeCode; |
1769 | unsigned typeSize = SemaRef.Context.getTypeSize(elementType); |
1770 | |
1771 | if (elementType->isFloatingType()) |
1772 | typeCode = "f"; |
1773 | else if (elementType->isSignedIntegerType()) |
1774 | typeCode = "s"; |
1775 | else if (elementType->isUnsignedIntegerType()) |
1776 | typeCode = "u"; |
1777 | else |
1778 | llvm_unreachable("Invalid element type!"); |
1779 | |
1780 | SemaRef.Diag(IList->getBeginLoc(), |
1781 | SemaRef.Context.getTypeSize(VT) > 64 |
1782 | ? diag::note_neon_vector_initializer_non_portable_q |
1783 | : diag::note_neon_vector_initializer_non_portable) |
1784 | << typeCode << typeSize; |
1785 | } |
1786 | |
1787 | return; |
1788 | } |
1789 | |
1790 | InitializedEntity ElementEntity = |
1791 | InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); |
1792 | |
1793 | |
1794 | for (unsigned i = 0; i < maxElements; ++i) { |
1795 | |
1796 | if (Index >= IList->getNumInits()) |
1797 | break; |
1798 | |
1799 | ElementEntity.setElementIndex(Index); |
1800 | |
1801 | QualType IType = IList->getInit(Index)->getType(); |
1802 | if (!IType->isVectorType()) { |
1803 | CheckSubElementType(ElementEntity, IList, elementType, Index, |
1804 | StructuredList, StructuredIndex); |
1805 | ++numEltsInit; |
1806 | } else { |
1807 | QualType VecType; |
1808 | const VectorType *IVT = IType->castAs<VectorType>(); |
1809 | unsigned numIElts = IVT->getNumElements(); |
1810 | |
1811 | if (IType->isExtVectorType()) |
1812 | VecType = SemaRef.Context.getExtVectorType(elementType, numIElts); |
1813 | else |
1814 | VecType = SemaRef.Context.getVectorType(elementType, numIElts, |
1815 | IVT->getVectorKind()); |
1816 | CheckSubElementType(ElementEntity, IList, VecType, Index, |
1817 | StructuredList, StructuredIndex); |
1818 | numEltsInit += numIElts; |
1819 | } |
1820 | } |
1821 | |
1822 | |
1823 | if (numEltsInit != maxElements) { |
1824 | if (!VerifyOnly) |
1825 | SemaRef.Diag(IList->getBeginLoc(), |
1826 | diag::err_vector_incorrect_num_initializers) |
1827 | << (numEltsInit < maxElements) << maxElements << numEltsInit; |
1828 | hadError = true; |
1829 | } |
1830 | } |
1831 | |
1832 | |
1833 | |
1834 | |
1835 | |
1836 | |
1837 | |
1838 | |
1839 | |
1840 | |
1841 | |
1842 | static bool checkDestructorReference(QualType ElementType, SourceLocation Loc, |
1843 | Sema &SemaRef) { |
1844 | auto *CXXRD = ElementType->getAsCXXRecordDecl(); |
1845 | if (!CXXRD) |
1846 | return false; |
1847 | |
1848 | CXXDestructorDecl *Destructor = SemaRef.LookupDestructor(CXXRD); |
1849 | SemaRef.CheckDestructorAccess(Loc, Destructor, |
1850 | SemaRef.PDiag(diag::err_access_dtor_temp) |
1851 | << ElementType); |
1852 | SemaRef.MarkFunctionReferenced(Loc, Destructor); |
1853 | return SemaRef.DiagnoseUseOfDecl(Destructor, Loc); |
1854 | } |
1855 | |
1856 | void InitListChecker::CheckArrayType(const InitializedEntity &Entity, |
1857 | InitListExpr *IList, QualType &DeclType, |
1858 | llvm::APSInt elementIndex, |
1859 | bool SubobjectIsDesignatorContext, |
1860 | unsigned &Index, |
1861 | InitListExpr *StructuredList, |
1862 | unsigned &StructuredIndex) { |
1863 | const ArrayType *arrayType = SemaRef.Context.getAsArrayType(DeclType); |
1864 | |
1865 | if (!VerifyOnly) { |
1866 | if (checkDestructorReference(arrayType->getElementType(), |
1867 | IList->getEndLoc(), SemaRef)) { |
1868 | hadError = true; |
1869 | return; |
1870 | } |
1871 | } |
1872 | |
1873 | |
1874 | if (Index < IList->getNumInits()) { |
1875 | if (IsStringInit(IList->getInit(Index), arrayType, SemaRef.Context) == |
1876 | SIF_None) { |
1877 | |
1878 | |
1879 | |
1880 | |
1881 | |
1882 | |
1883 | if (!VerifyOnly) |
1884 | CheckStringInit(IList->getInit(Index), DeclType, arrayType, SemaRef); |
1885 | if (StructuredList) { |
1886 | UpdateStructuredListElement(StructuredList, StructuredIndex, |
1887 | IList->getInit(Index)); |
1888 | StructuredList->resizeInits(SemaRef.Context, StructuredIndex); |
1889 | } |
1890 | ++Index; |
1891 | return; |
1892 | } |
1893 | } |
1894 | if (const VariableArrayType *VAT = dyn_cast<VariableArrayType>(arrayType)) { |
1895 | |
1896 | |
1897 | |
1898 | if (!VerifyOnly) |
1899 | SemaRef.Diag(VAT->getSizeExpr()->getBeginLoc(), |
1900 | diag::err_variable_object_no_init) |
1901 | << VAT->getSizeExpr()->getSourceRange(); |
1902 | hadError = true; |
1903 | ++Index; |
1904 | ++StructuredIndex; |
1905 | return; |
1906 | } |
1907 | |
1908 | |
1909 | llvm::APSInt maxElements(elementIndex.getBitWidth(), |
1910 | elementIndex.isUnsigned()); |
1911 | bool maxElementsKnown = false; |
1912 | if (const ConstantArrayType *CAT = dyn_cast<ConstantArrayType>(arrayType)) { |
1913 | maxElements = CAT->getSize(); |
1914 | elementIndex = elementIndex.extOrTrunc(maxElements.getBitWidth()); |
1915 | elementIndex.setIsUnsigned(maxElements.isUnsigned()); |
1916 | maxElementsKnown = true; |
1917 | } |
1918 | |
1919 | QualType elementType = arrayType->getElementType(); |
1920 | while (Index < IList->getNumInits()) { |
1921 | Expr *Init = IList->getInit(Index); |
1922 | if (DesignatedInitExpr *DIE = dyn_cast<DesignatedInitExpr>(Init)) { |
1923 | |
1924 | |
1925 | |
1926 | if (!SubobjectIsDesignatorContext) |
1927 | return; |
1928 | |
1929 | |
1930 | |
1931 | if (CheckDesignatedInitializer(Entity, IList, DIE, 0, |
1932 | DeclType, nullptr, &elementIndex, Index, |
1933 | StructuredList, StructuredIndex, true, |
1934 | false)) { |
1935 | hadError = true; |
1936 | continue; |
1937 | } |
1938 | |
1939 | if (elementIndex.getBitWidth() > maxElements.getBitWidth()) |
1940 | maxElements = maxElements.extend(elementIndex.getBitWidth()); |
1941 | else if (elementIndex.getBitWidth() < maxElements.getBitWidth()) |
1942 | elementIndex = elementIndex.extend(maxElements.getBitWidth()); |
1943 | elementIndex.setIsUnsigned(maxElements.isUnsigned()); |
1944 | |
1945 | |
1946 | |
1947 | if (!maxElementsKnown && elementIndex > maxElements) |
1948 | maxElements = elementIndex; |
1949 | |
1950 | continue; |
1951 | } |
1952 | |
1953 | |
1954 | |
1955 | if (maxElementsKnown && elementIndex == maxElements) |
1956 | break; |
1957 | |
1958 | InitializedEntity ElementEntity = |
1959 | InitializedEntity::InitializeElement(SemaRef.Context, StructuredIndex, |
1960 | Entity); |
1961 | |
1962 | CheckSubElementType(ElementEntity, IList, elementType, Index, |
1963 | StructuredList, StructuredIndex); |
1964 | ++elementIndex; |
1965 | |
1966 | |
1967 | |
1968 | if (!maxElementsKnown && elementIndex > maxElements) |
1969 | maxElements = elementIndex; |
1970 | } |
1971 | if (!hadError && DeclType->isIncompleteArrayType() && !VerifyOnly) { |
1972 | |
1973 | |
1974 | llvm::APSInt Zero(maxElements.getBitWidth(), maxElements.isUnsigned()); |
1975 | if (maxElements == Zero && !Entity.isVariableLengthArrayNew()) { |
1976 | |
1977 | |
1978 | SemaRef.Diag(IList->getBeginLoc(), diag::ext_typecheck_zero_array_size); |
1979 | } |
1980 | |
1981 | DeclType = SemaRef.Context.getConstantArrayType( |
1982 | elementType, maxElements, nullptr, ArrayType::Normal, 0); |
1983 | } |
1984 | if (!hadError) { |
1985 | |
1986 | |
1987 | |
1988 | |
1989 | if ((maxElementsKnown && elementIndex < maxElements) || |
1990 | Entity.isVariableLengthArrayNew()) |
1991 | CheckEmptyInitializable( |
1992 | InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity), |
1993 | IList->getEndLoc()); |
1994 | } |
1995 | } |
1996 | |
1997 | bool InitListChecker::CheckFlexibleArrayInit(const InitializedEntity &Entity, |
1998 | Expr *InitExpr, |
1999 | FieldDecl *Field, |
2000 | bool TopLevelObject) { |
2001 | |
2002 | unsigned FlexArrayDiag; |
2003 | if (isa<InitListExpr>(InitExpr) && |
2004 | cast<InitListExpr>(InitExpr)->getNumInits() == 0) { |
2005 | |
2006 | FlexArrayDiag = diag::ext_flexible_array_init; |
2007 | } else if (SemaRef.getLangOpts().CPlusPlus) { |
2008 | |
2009 | |
2010 | FlexArrayDiag = diag::err_flexible_array_init; |
2011 | } else if (!TopLevelObject) { |
2012 | |
2013 | FlexArrayDiag = diag::err_flexible_array_init; |
2014 | } else if (Entity.getKind() != InitializedEntity::EK_Variable) { |
2015 | |
2016 | FlexArrayDiag = diag::err_flexible_array_init; |
2017 | } else if (cast<VarDecl>(Entity.getDecl())->hasLocalStorage()) { |
2018 | |
2019 | FlexArrayDiag = diag::err_flexible_array_init; |
2020 | } else { |
2021 | |
2022 | FlexArrayDiag = diag::ext_flexible_array_init; |
2023 | } |
2024 | |
2025 | if (!VerifyOnly) { |
2026 | SemaRef.Diag(InitExpr->getBeginLoc(), FlexArrayDiag) |
2027 | << InitExpr->getBeginLoc(); |
2028 | SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) |
2029 | << Field; |
2030 | } |
2031 | |
2032 | return FlexArrayDiag != diag::ext_flexible_array_init; |
2033 | } |
2034 | |
2035 | void InitListChecker::CheckStructUnionTypes( |
2036 | const InitializedEntity &Entity, InitListExpr *IList, QualType DeclType, |
2037 | CXXRecordDecl::base_class_range Bases, RecordDecl::field_iterator Field, |
2038 | bool SubobjectIsDesignatorContext, unsigned &Index, |
2039 | InitListExpr *StructuredList, unsigned &StructuredIndex, |
2040 | bool TopLevelObject) { |
2041 | RecordDecl *structDecl = DeclType->castAs<RecordType>()->getDecl(); |
2042 | |
2043 | |
2044 | |
2045 | if (structDecl->isInvalidDecl()) { |
2046 | |
2047 | ++Index; |
2048 | hadError = true; |
2049 | return; |
2050 | } |
2051 | |
2052 | if (DeclType->isUnionType() && IList->getNumInits() == 0) { |
2053 | RecordDecl *RD = DeclType->castAs<RecordType>()->getDecl(); |
2054 | |
2055 | if (!VerifyOnly) |
2056 | for (FieldDecl *FD : RD->fields()) { |
2057 | QualType ET = SemaRef.Context.getBaseElementType(FD->getType()); |
2058 | if (checkDestructorReference(ET, IList->getEndLoc(), SemaRef)) { |
2059 | hadError = true; |
2060 | return; |
2061 | } |
2062 | } |
2063 | |
2064 | |
2065 | if (isa<CXXRecordDecl>(RD) && |
2066 | cast<CXXRecordDecl>(RD)->hasInClassInitializer()) { |
2067 | if (!StructuredList) |
2068 | return; |
2069 | for (RecordDecl::field_iterator FieldEnd = RD->field_end(); |
2070 | Field != FieldEnd; ++Field) { |
2071 | if (Field->hasInClassInitializer()) { |
2072 | StructuredList->setInitializedFieldInUnion(*Field); |
2073 | |
2074 | return; |
2075 | } |
2076 | } |
2077 | } |
2078 | |
2079 | |
2080 | |
2081 | for (RecordDecl::field_iterator FieldEnd = RD->field_end(); |
2082 | Field != FieldEnd; ++Field) { |
2083 | if (!Field->isUnnamedBitfield()) { |
2084 | CheckEmptyInitializable( |
2085 | InitializedEntity::InitializeMember(*Field, &Entity), |
2086 | IList->getEndLoc()); |
2087 | if (StructuredList) |
2088 | StructuredList->setInitializedFieldInUnion(*Field); |
2089 | break; |
2090 | } |
2091 | } |
2092 | return; |
2093 | } |
2094 | |
2095 | bool InitializedSomething = false; |
2096 | |
2097 | |
2098 | for (auto &Base : Bases) { |
2099 | Expr *Init = Index < IList->getNumInits() ? IList->getInit(Index) : nullptr; |
2100 | |
2101 | |
2102 | |
2103 | if (Init && isa<DesignatedInitExpr>(Init)) |
2104 | Init = nullptr; |
2105 | |
2106 | SourceLocation InitLoc = Init ? Init->getBeginLoc() : IList->getEndLoc(); |
2107 | InitializedEntity BaseEntity = InitializedEntity::InitializeBase( |
2108 | SemaRef.Context, &Base, false, &Entity); |
2109 | if (Init) { |
2110 | CheckSubElementType(BaseEntity, IList, Base.getType(), Index, |
2111 | StructuredList, StructuredIndex); |
2112 | InitializedSomething = true; |
2113 | } else { |
2114 | CheckEmptyInitializable(BaseEntity, InitLoc); |
2115 | } |
2116 | |
2117 | if (!VerifyOnly) |
2118 | if (checkDestructorReference(Base.getType(), InitLoc, SemaRef)) { |
2119 | hadError = true; |
2120 | return; |
2121 | } |
2122 | } |
2123 | |
2124 | |
2125 | |
2126 | |
2127 | |
2128 | RecordDecl *RD = DeclType->castAs<RecordType>()->getDecl(); |
2129 | RecordDecl::field_iterator FieldEnd = RD->field_end(); |
2130 | bool CheckForMissingFields = |
2131 | !IList->isIdiomaticZeroInitializer(SemaRef.getLangOpts()); |
2132 | bool HasDesignatedInit = false; |
2133 | |
2134 | while (Index < IList->getNumInits()) { |
2135 | Expr *Init = IList->getInit(Index); |
2136 | SourceLocation InitLoc = Init->getBeginLoc(); |
2137 | |
2138 | if (DesignatedInitExpr *DIE = dyn_cast<DesignatedInitExpr>(Init)) { |
2139 | |
2140 | |
2141 | |
2142 | if (!SubobjectIsDesignatorContext) |
2143 | return; |
2144 | |
2145 | HasDesignatedInit = true; |
2146 | |
2147 | |
2148 | |
2149 | if (CheckDesignatedInitializer(Entity, IList, DIE, 0, |
2150 | DeclType, &Field, nullptr, Index, |
2151 | StructuredList, StructuredIndex, |
2152 | true, TopLevelObject)) |
2153 | hadError = true; |
2154 | else if (!VerifyOnly) { |
2155 | |
2156 | RecordDecl::field_iterator F = RD->field_begin(); |
2157 | while (std::next(F) != Field) |
2158 | ++F; |
2159 | QualType ET = SemaRef.Context.getBaseElementType(F->getType()); |
2160 | if (checkDestructorReference(ET, InitLoc, SemaRef)) { |
2161 | hadError = true; |
2162 | return; |
2163 | } |
2164 | } |
2165 | |
2166 | InitializedSomething = true; |
2167 | |
2168 | |
2169 | |
2170 | CheckForMissingFields = false; |
2171 | continue; |
2172 | } |
2173 | |
2174 | if (Field == FieldEnd) { |
2175 | |
2176 | break; |
2177 | } |
2178 | |
2179 | |
2180 | if (InitializedSomething && DeclType->isUnionType()) |
2181 | break; |
2182 | |
2183 | |
2184 | if (Field->getType()->isIncompleteArrayType()) |
2185 | break; |
2186 | |
2187 | if (Field->isUnnamedBitfield()) { |
2188 | |
2189 | ++Field; |
2190 | continue; |
2191 | } |
2192 | |
2193 | |
2194 | bool InvalidUse; |
2195 | if (VerifyOnly) |
2196 | InvalidUse = !SemaRef.CanUseDecl(*Field, TreatUnavailableAsInvalid); |
2197 | else |
2198 | InvalidUse = SemaRef.DiagnoseUseOfDecl( |
2199 | *Field, IList->getInit(Index)->getBeginLoc()); |
2200 | if (InvalidUse) { |
2201 | ++Index; |
2202 | ++Field; |
2203 | hadError = true; |
2204 | continue; |
2205 | } |
2206 | |
2207 | if (!VerifyOnly) { |
2208 | QualType ET = SemaRef.Context.getBaseElementType(Field->getType()); |
2209 | if (checkDestructorReference(ET, InitLoc, SemaRef)) { |
2210 | hadError = true; |
2211 | return; |
2212 | } |
2213 | } |
2214 | |
2215 | InitializedEntity MemberEntity = |
2216 | InitializedEntity::InitializeMember(*Field, &Entity); |
2217 | CheckSubElementType(MemberEntity, IList, Field->getType(), Index, |
2218 | StructuredList, StructuredIndex); |
2219 | InitializedSomething = true; |
2220 | |
2221 | if (DeclType->isUnionType() && StructuredList) { |
2222 | |
2223 | StructuredList->setInitializedFieldInUnion(*Field); |
2224 | } |
2225 | |
2226 | ++Field; |
2227 | } |
2228 | |
2229 | |
2230 | if (!VerifyOnly && InitializedSomething && CheckForMissingFields && |
2231 | Field != FieldEnd && !Field->getType()->isIncompleteArrayType() && |
2232 | !DeclType->isUnionType()) { |
2233 | |
2234 | |
2235 | for (RecordDecl::field_iterator it = Field, end = RD->field_end(); |
2236 | it != end; ++it) { |
2237 | if (!it->isUnnamedBitfield() && !it->hasInClassInitializer()) { |
2238 | SemaRef.Diag(IList->getSourceRange().getEnd(), |
2239 | diag::warn_missing_field_initializers) << *it; |
2240 | break; |
2241 | } |
2242 | } |
2243 | } |
2244 | |
2245 | |
2246 | |
2247 | if (!StructuredList && Field != FieldEnd && !DeclType->isUnionType() && |
2248 | !Field->getType()->isIncompleteArrayType()) { |
2249 | for (; Field != FieldEnd && !hadError; ++Field) { |
2250 | if (!Field->isUnnamedBitfield() && !Field->hasInClassInitializer()) |
2251 | CheckEmptyInitializable( |
2252 | InitializedEntity::InitializeMember(*Field, &Entity), |
2253 | IList->getEndLoc()); |
2254 | } |
2255 | } |
2256 | |
2257 | |
2258 | if (!VerifyOnly) { |
2259 | |
2260 | |
2261 | RecordDecl::field_iterator I = HasDesignatedInit ? RD->field_begin() |
2262 | : Field; |
2263 | for (RecordDecl::field_iterator E = RD->field_end(); I != E; ++I) { |
2264 | QualType ET = SemaRef.Context.getBaseElementType(I->getType()); |
2265 | if (checkDestructorReference(ET, IList->getEndLoc(), SemaRef)) { |
2266 | hadError = true; |
2267 | return; |
2268 | } |
2269 | } |
2270 | } |
2271 | |
2272 | if (Field == FieldEnd || !Field->getType()->isIncompleteArrayType() || |
2273 | Index >= IList->getNumInits()) |
2274 | return; |
2275 | |
2276 | if (CheckFlexibleArrayInit(Entity, IList->getInit(Index), *Field, |
2277 | TopLevelObject)) { |
2278 | hadError = true; |
2279 | ++Index; |
2280 | return; |
2281 | } |
2282 | |
2283 | InitializedEntity MemberEntity = |
2284 | InitializedEntity::InitializeMember(*Field, &Entity); |
2285 | |
2286 | if (isa<InitListExpr>(IList->getInit(Index))) |
2287 | CheckSubElementType(MemberEntity, IList, Field->getType(), Index, |
2288 | StructuredList, StructuredIndex); |
2289 | else |
2290 | CheckImplicitInitList(MemberEntity, IList, Field->getType(), Index, |
2291 | StructuredList, StructuredIndex); |
2292 | } |
2293 | |
2294 | |
2295 | |
2296 | |
2297 | |
2298 | static void ExpandAnonymousFieldDesignator(Sema &SemaRef, |
2299 | DesignatedInitExpr *DIE, |
2300 | unsigned DesigIdx, |
2301 | IndirectFieldDecl *IndirectField) { |
2302 | typedef DesignatedInitExpr::Designator Designator; |
2303 | |
2304 | |
2305 | SmallVector<Designator, 4> Replacements; |
2306 | for (IndirectFieldDecl::chain_iterator PI = IndirectField->chain_begin(), |
2307 | PE = IndirectField->chain_end(); PI != PE; ++PI) { |
2308 | if (PI + 1 == PE) |
2309 | Replacements.push_back(Designator((IdentifierInfo *)nullptr, |
2310 | DIE->getDesignator(DesigIdx)->getDotLoc(), |
2311 | DIE->getDesignator(DesigIdx)->getFieldLoc())); |
2312 | else |
2313 | Replacements.push_back(Designator((IdentifierInfo *)nullptr, |
2314 | SourceLocation(), SourceLocation())); |
2315 | assert(isa<FieldDecl>(*PI)); |
2316 | Replacements.back().setField(cast<FieldDecl>(*PI)); |
2317 | } |
2318 | |
2319 | |
2320 | |
2321 | |
2322 | DIE->ExpandDesignator(SemaRef.Context, DesigIdx, &Replacements[0], |
2323 | &Replacements[0] + Replacements.size()); |
2324 | } |
2325 | |
2326 | static DesignatedInitExpr *CloneDesignatedInitExpr(Sema &SemaRef, |
2327 | DesignatedInitExpr *DIE) { |
2328 | unsigned NumIndexExprs = DIE->getNumSubExprs() - 1; |
2329 | SmallVector<Expr*, 4> IndexExprs(NumIndexExprs); |
2330 | for (unsigned I = 0; I < NumIndexExprs; ++I) |
2331 | IndexExprs[I] = DIE->getSubExpr(I + 1); |
2332 | return DesignatedInitExpr::Create(SemaRef.Context, DIE->designators(), |
2333 | IndexExprs, |
2334 | DIE->getEqualOrColonLoc(), |
2335 | DIE->usesGNUSyntax(), DIE->getInit()); |
2336 | } |
2337 | |
2338 | namespace { |
2339 | |
2340 | |
2341 | |
2342 | class FieldInitializerValidatorCCC final : public CorrectionCandidateCallback { |
2343 | public: |
2344 | explicit FieldInitializerValidatorCCC(RecordDecl *RD) |
2345 | : Record(RD) {} |
2346 | |
2347 | bool ValidateCandidate(const TypoCorrection &candidate) override { |
2348 | FieldDecl *FD = candidate.getCorrectionDeclAs<FieldDecl>(); |
2349 | return FD && FD->getDeclContext()->getRedeclContext()->Equals(Record); |
2350 | } |
2351 | |
2352 | std::unique_ptr<CorrectionCandidateCallback> clone() override { |
2353 | return std::make_unique<FieldInitializerValidatorCCC>(*this); |
2354 | } |
2355 | |
2356 | private: |
2357 | RecordDecl *Record; |
2358 | }; |
2359 | |
2360 | } |
2361 | |
2362 | |
2363 | |
2364 | |
2365 | |
2366 | |
2367 | |
2368 | |
2369 | |
2370 | |
2371 | |
2372 | |
2373 | |
2374 | |
2375 | |
2376 | |
2377 | |
2378 | |
2379 | |
2380 | |
2381 | |
2382 | |
2383 | |
2384 | |
2385 | |
2386 | |
2387 | |
2388 | |
2389 | |
2390 | |
2391 | |
2392 | |
2393 | |
2394 | |
2395 | |
2396 | |
2397 | |
2398 | |
2399 | bool |
2400 | InitListChecker::CheckDesignatedInitializer(const InitializedEntity &Entity, |
2401 | InitListExpr *IList, |
2402 | DesignatedInitExpr *DIE, |
2403 | unsigned DesigIdx, |
2404 | QualType &CurrentObjectType, |
2405 | RecordDecl::field_iterator *NextField, |
2406 | llvm::APSInt *NextElementIndex, |
2407 | unsigned &Index, |
2408 | InitListExpr *StructuredList, |
2409 | unsigned &StructuredIndex, |
2410 | bool FinishSubobjectInit, |
2411 | bool TopLevelObject) { |
2412 | if (DesigIdx == DIE->size()) { |
2413 | |
2414 | |
2415 | |
2416 | |
2417 | if (DIE->isDirectInit()) { |
2418 | Expr *Init = DIE->getInit(); |
2419 | assert(isa<InitListExpr>(Init) && |
2420 | "designator result in direct non-list initialization?"); |
2421 | InitializationKind Kind = InitializationKind::CreateDirectList( |
2422 | DIE->getBeginLoc(), Init->getBeginLoc(), Init->getEndLoc()); |
2423 | InitializationSequence Seq(SemaRef, Entity, Kind, Init, |
2424 | true); |
2425 | if (StructuredList) { |
2426 | ExprResult Result = VerifyOnly |
2427 | ? getDummyInit() |
2428 | : Seq.Perform(SemaRef, Entity, Kind, Init); |
2429 | UpdateStructuredListElement(StructuredList, StructuredIndex, |
2430 | Result.get()); |
2431 | } |
2432 | ++Index; |
2433 | return !Seq; |
2434 | } |
2435 | |
2436 | |
2437 | bool prevHadError = hadError; |
2438 | |
2439 | |
2440 | |
2441 | |
2442 | unsigned OldIndex = Index; |
2443 | IList->setInit(OldIndex, DIE->getInit()); |
2444 | |
2445 | CheckSubElementType(Entity, IList, CurrentObjectType, Index, StructuredList, |
2446 | StructuredIndex, true); |
2447 | |
2448 | |
2449 | |
2450 | if (IList->getInit(OldIndex) != DIE->getInit()) |
2451 | DIE->setInit(IList->getInit(OldIndex)); |
2452 | IList->setInit(OldIndex, DIE); |
2453 | |
2454 | return hadError && !prevHadError; |
2455 | } |
2456 | |
2457 | DesignatedInitExpr::Designator *D = DIE->getDesignator(DesigIdx); |
2458 | bool IsFirstDesignator = (DesigIdx == 0); |
2459 | if (IsFirstDesignator ? FullyStructuredList : StructuredList) { |
2460 | |
2461 | |
2462 | if (IsFirstDesignator) |
2463 | StructuredList = FullyStructuredList; |
2464 | else { |
2465 | Expr *ExistingInit = StructuredIndex < StructuredList->getNumInits() ? |
2466 | StructuredList->getInit(StructuredIndex) : nullptr; |
2467 | if (!ExistingInit && StructuredList->hasArrayFiller()) |
2468 | ExistingInit = StructuredList->getArrayFiller(); |
2469 | |
2470 | if (!ExistingInit) |
2471 | StructuredList = getStructuredSubobjectInit( |
2472 | IList, Index, CurrentObjectType, StructuredList, StructuredIndex, |
2473 | SourceRange(D->getBeginLoc(), DIE->getEndLoc())); |
2474 | else if (InitListExpr *Result = dyn_cast<InitListExpr>(ExistingInit)) |
2475 | StructuredList = Result; |
2476 | else { |
2477 | |
2478 | |
2479 | |
2480 | |
2481 | |
2482 | |
2483 | |
2484 | |
2485 | |
2486 | |
2487 | |
2488 | diagnoseInitOverride(ExistingInit, |
2489 | SourceRange(D->getBeginLoc(), DIE->getEndLoc()), |
2490 | false); |
2491 | |
2492 | if (!VerifyOnly) { |
2493 | if (DesignatedInitUpdateExpr *E = |
2494 | dyn_cast<DesignatedInitUpdateExpr>(ExistingInit)) |
2495 | StructuredList = E->getUpdater(); |
2496 | else { |
2497 | DesignatedInitUpdateExpr *DIUE = new (SemaRef.Context) |
2498 | DesignatedInitUpdateExpr(SemaRef.Context, D->getBeginLoc(), |
2499 | ExistingInit, DIE->getEndLoc()); |
2500 | StructuredList->updateInit(SemaRef.Context, StructuredIndex, DIUE); |
2501 | StructuredList = DIUE->getUpdater(); |
2502 | } |
2503 | } else { |
2504 | |
2505 | |
2506 | |
2507 | |
2508 | |
2509 | StructuredList = nullptr; |
2510 | } |
2511 | } |
2512 | } |
2513 | } |
2514 | |
2515 | if (D->isFieldDesignator()) { |
2516 | |
2517 | |
2518 | |
2519 | |
2520 | |
2521 | |
2522 | |
2523 | |
2524 | |
2525 | const RecordType *RT = CurrentObjectType->getAs<RecordType>(); |
2526 | if (!RT) { |
2527 | SourceLocation Loc = D->getDotLoc(); |
2528 | if (Loc.isInvalid()) |
2529 | Loc = D->getFieldLoc(); |
2530 | if (!VerifyOnly) |
2531 | SemaRef.Diag(Loc, diag::err_field_designator_non_aggr) |
2532 | << SemaRef.getLangOpts().CPlusPlus << CurrentObjectType; |
2533 | ++Index; |
2534 | return true; |
2535 | } |
2536 | |
2537 | FieldDecl *KnownField = D->getField(); |
2538 | if (!KnownField) { |
2539 | IdentifierInfo *FieldName = D->getFieldName(); |
2540 | DeclContext::lookup_result Lookup = RT->getDecl()->lookup(FieldName); |
2541 | for (NamedDecl *ND : Lookup) { |
2542 | if (auto *FD = dyn_cast<FieldDecl>(ND)) { |
2543 | KnownField = FD; |
2544 | break; |
2545 | } |
2546 | if (auto *IFD = dyn_cast<IndirectFieldDecl>(ND)) { |
2547 | |
2548 | if (VerifyOnly) |
2549 | DIE = CloneDesignatedInitExpr(SemaRef, DIE); |
2550 | ExpandAnonymousFieldDesignator(SemaRef, DIE, DesigIdx, IFD); |
2551 | D = DIE->getDesignator(DesigIdx); |
2552 | KnownField = cast<FieldDecl>(*IFD->chain_begin()); |
2553 | break; |
2554 | } |
2555 | } |
2556 | if (!KnownField) { |
2557 | if (VerifyOnly) { |
2558 | ++Index; |
2559 | return true; |
2560 | } |
2561 | |
2562 | |
2563 | if (!Lookup.empty()) { |
2564 | SemaRef.Diag(D->getFieldLoc(), diag::err_field_designator_nonfield) |
2565 | << FieldName; |
2566 | SemaRef.Diag(Lookup.front()->getLocation(), |
2567 | diag::note_field_designator_found); |
2568 | ++Index; |
2569 | return true; |
2570 | } |
2571 | |
2572 | |
2573 | |
2574 | FieldInitializerValidatorCCC CCC(RT->getDecl()); |
2575 | if (TypoCorrection Corrected = SemaRef.CorrectTypo( |
2576 | DeclarationNameInfo(FieldName, D->getFieldLoc()), |
2577 | Sema::LookupMemberName, nullptr, nullptr, CCC, |
2578 | Sema::CTK_ErrorRecovery, RT->getDecl())) { |
2579 | SemaRef.diagnoseTypo( |
2580 | Corrected, |
2581 | SemaRef.PDiag(diag::err_field_designator_unknown_suggest) |
2582 | << FieldName << CurrentObjectType); |
2583 | KnownField = Corrected.getCorrectionDeclAs<FieldDecl>(); |
2584 | hadError = true; |
2585 | } else { |
2586 | |
2587 | SemaRef.Diag(D->getFieldLoc(), diag::err_field_designator_unknown) |
2588 | << FieldName << CurrentObjectType; |
2589 | ++Index; |
2590 | return true; |
2591 | } |
2592 | } |
2593 | } |
2594 | |
2595 | unsigned NumBases = 0; |
2596 | if (auto *CXXRD = dyn_cast<CXXRecordDecl>(RT->getDecl())) |
2597 | NumBases = CXXRD->getNumBases(); |
2598 | |
2599 | unsigned FieldIndex = NumBases; |
2600 | |
2601 | for (auto *FI : RT->getDecl()->fields()) { |
2602 | if (FI->isUnnamedBitfield()) |
2603 | continue; |
2604 | if (declaresSameEntity(KnownField, FI)) { |
2605 | KnownField = FI; |
2606 | break; |
2607 | } |
2608 | ++FieldIndex; |
2609 | } |
2610 | |
2611 | RecordDecl::field_iterator Field = |
2612 | RecordDecl::field_iterator(DeclContext::decl_iterator(KnownField)); |
2613 | |
2614 | |
2615 | |
2616 | if (RT->getDecl()->isUnion()) { |
2617 | FieldIndex = 0; |
2618 | if (StructuredList) { |
2619 | FieldDecl *CurrentField = StructuredList->getInitializedFieldInUnion(); |
2620 | if (CurrentField && !declaresSameEntity(CurrentField, *Field)) { |
2621 | assert(StructuredList->getNumInits() == 1 |
2622 | && "A union should never have more than one initializer!"); |
2623 | |
2624 | Expr *ExistingInit = StructuredList->getInit(0); |
2625 | if (ExistingInit) { |
2626 | |
2627 | diagnoseInitOverride( |
2628 | ExistingInit, SourceRange(D->getBeginLoc(), DIE->getEndLoc())); |
2629 | } |
2630 | |
2631 | |
2632 | StructuredList->resizeInits(SemaRef.Context, 0); |
2633 | StructuredList->setInitializedFieldInUnion(nullptr); |
2634 | } |
2635 | |
2636 | StructuredList->setInitializedFieldInUnion(*Field); |
2637 | } |
2638 | } |
2639 | |
2640 | |
2641 | bool InvalidUse; |
2642 | if (VerifyOnly) |
2643 | InvalidUse = !SemaRef.CanUseDecl(*Field, TreatUnavailableAsInvalid); |
2644 | else |
2645 | InvalidUse = SemaRef.DiagnoseUseOfDecl(*Field, D->getFieldLoc()); |
2646 | if (InvalidUse) { |
2647 | ++Index; |
2648 | return true; |
2649 | } |
2650 | |
2651 | |
2652 | |
2653 | |
2654 | |
2655 | |
2656 | |
2657 | |
2658 | |
2659 | |
2660 | |
2661 | |
2662 | |
2663 | |
2664 | |
2665 | |
2666 | if (IsFirstDesignator && !VerifyOnly && SemaRef.getLangOpts().CPlusPlus && |
2667 | NextField && |
2668 | (*NextField == RT->getDecl()->field_end() || |
2669 | (*NextField)->getFieldIndex() > Field->getFieldIndex() + 1)) { |
2670 | |
2671 | FieldDecl *PrevField = nullptr; |
2672 | for (auto FI = RT->getDecl()->field_begin(); |
2673 | FI != RT->getDecl()->field_end(); ++FI) { |
2674 | if (FI->isUnnamedBitfield()) |
2675 | continue; |
2676 | if (*NextField != RT->getDecl()->field_end() && |
2677 | declaresSameEntity(*FI, **NextField)) |
2678 | break; |
2679 | PrevField = *FI; |
2680 | } |
2681 | |
2682 | if (PrevField && |
2683 | PrevField->getFieldIndex() > KnownField->getFieldIndex()) { |
2684 | SemaRef.Diag(DIE->getBeginLoc(), diag::ext_designated_init_reordered) |
2685 | << KnownField << PrevField << DIE->getSourceRange(); |
2686 | |
2687 | unsigned OldIndex = NumBases + PrevField->getFieldIndex(); |
2688 | if (StructuredList && OldIndex <= StructuredList->getNumInits()) { |
2689 | if (Expr *PrevInit = StructuredList->getInit(OldIndex)) { |
2690 | SemaRef.Diag(PrevInit->getBeginLoc(), |
2691 | diag::note_previous_field_init) |
2692 | << PrevField << PrevInit->getSourceRange(); |
2693 | } |
2694 | } |
2695 | } |
2696 | } |
2697 | |
2698 | |
2699 | |
2700 | if (!VerifyOnly) |
2701 | D->setField(*Field); |
2702 | |
2703 | |
2704 | |
2705 | if (StructuredList && FieldIndex >= StructuredList->getNumInits()) |
2706 | StructuredList->resizeInits(SemaRef.Context, FieldIndex + 1); |
2707 | |
2708 | |
2709 | if (Field->getType()->isIncompleteArrayType()) { |
2710 | bool Invalid = false; |
2711 | if ((DesigIdx + 1) != DIE->size()) { |
2712 | |
2713 | |
2714 | if (!VerifyOnly) { |
2715 | DesignatedInitExpr::Designator *NextD |
2716 | = DIE->getDesignator(DesigIdx + 1); |
2717 | SemaRef.Diag(NextD->getBeginLoc(), |
2718 | diag::err_designator_into_flexible_array_member) |
2719 | << SourceRange(NextD->getBeginLoc(), DIE->getEndLoc()); |
2720 | SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) |
2721 | << *Field; |
2722 | } |
2723 | Invalid = true; |
2724 | } |
2725 | |
2726 | if (!hadError && !isa<InitListExpr>(DIE->getInit()) && |
2727 | !isa<StringLiteral>(DIE->getInit())) { |
2728 | |
2729 | if (!VerifyOnly) { |
2730 | SemaRef.Diag(DIE->getInit()->getBeginLoc(), |
2731 | diag::err_flexible_array_init_needs_braces) |
2732 | << DIE->getInit()->getSourceRange(); |
2733 | SemaRef.Diag(Field->getLocation(), diag::note_flexible_array_member) |
2734 | << *Field; |
2735 | } |
2736 | Invalid = true; |
2737 | } |
2738 | |
2739 | |
2740 | if (!Invalid && CheckFlexibleArrayInit(Entity, DIE->getInit(), *Field, |
2741 | TopLevelObject)) |
2742 | Invalid = true; |
2743 | |
2744 | if (Invalid) { |
2745 | ++Index; |
2746 | return true; |
2747 | } |
2748 | |
2749 | |
2750 | bool prevHadError = hadError; |
2751 | unsigned newStructuredIndex = FieldIndex; |
2752 | unsigned OldIndex = Index; |
2753 | IList->setInit(Index, DIE->getInit()); |
2754 | |
2755 | InitializedEntity MemberEntity = |
2756 | InitializedEntity::InitializeMember(*Field, &Entity); |
2757 | CheckSubElementType(MemberEntity, IList, Field->getType(), Index, |
2758 | StructuredList, newStructuredIndex); |
2759 | |
2760 | IList->setInit(OldIndex, DIE); |
2761 | if (hadError && !prevHadError) { |
2762 | ++Field; |
2763 | ++FieldIndex; |
2764 | if (NextField) |
2765 | *NextField = Field; |
2766 | StructuredIndex = FieldIndex; |
2767 | return true; |
2768 | } |
2769 | } else { |
2770 | |
2771 | QualType FieldType = Field->getType(); |
2772 | unsigned newStructuredIndex = FieldIndex; |
2773 | |
2774 | InitializedEntity MemberEntity = |
2775 | InitializedEntity::InitializeMember(*Field, &Entity); |
2776 | if (CheckDesignatedInitializer(MemberEntity, IList, DIE, DesigIdx + 1, |
2777 | FieldType, nullptr, nullptr, Index, |
2778 | StructuredList, newStructuredIndex, |
2779 | FinishSubobjectInit, false)) |
2780 | return true; |
2781 | } |
2782 | |
2783 | |
2784 | |
2785 | ++Field; |
2786 | ++FieldIndex; |
2787 | |
2788 | |
2789 | |
2790 | if (IsFirstDesignator) { |
2791 | if (NextField) |
2792 | *NextField = Field; |
2793 | StructuredIndex = FieldIndex; |
2794 | return false; |
2795 | } |
2796 | |
2797 | if (!FinishSubobjectInit) |
2798 | return false; |
2799 | |
2800 | |
2801 | if (RT->getDecl()->isUnion()) |
2802 | return hadError; |
2803 | |
2804 | |
2805 | bool prevHadError = hadError; |
2806 | |
2807 | auto NoBases = |
2808 | CXXRecordDecl::base_class_range(CXXRecordDecl::base_class_iterator(), |
2809 | CXXRecordDecl::base_class_iterator()); |
2810 | CheckStructUnionTypes(Entity, IList, CurrentObjectType, NoBases, Field, |
2811 | false, Index, StructuredList, FieldIndex); |
2812 | return hadError && !prevHadError; |
2813 | } |
2814 | |
2815 | |
2816 | |
2817 | |
2818 | |
2819 | |
2820 | |
2821 | |
2822 | |
2823 | |
2824 | |
2825 | |
2826 | |
2827 | |
2828 | |
2829 | |
2830 | const ArrayType *AT = SemaRef.Context.getAsArrayType(CurrentObjectType); |
2831 | if (!AT) { |
2832 | if (!VerifyOnly) |
2833 | SemaRef.Diag(D->getLBracketLoc(), diag::err_array_designator_non_array) |
2834 | << CurrentObjectType; |
2835 | ++Index; |
2836 | return true; |
2837 | } |
2838 | |
2839 | Expr *IndexExpr = nullptr; |
2840 | llvm::APSInt DesignatedStartIndex, DesignatedEndIndex; |
2841 | if (D->isArrayDesignator()) { |
2842 | IndexExpr = DIE->getArrayIndex(*D); |
2843 | DesignatedStartIndex = IndexExpr->EvaluateKnownConstInt(SemaRef.Context); |
2844 | DesignatedEndIndex = DesignatedStartIndex; |
2845 | } else { |
2846 | assert(D->isArrayRangeDesignator() && "Need array-range designator"); |
2847 | |
2848 | DesignatedStartIndex = |
2849 | DIE->getArrayRangeStart(*D)->EvaluateKnownConstInt(SemaRef.Context); |
2850 | DesignatedEndIndex = |
2851 | DIE->getArrayRangeEnd(*D)->EvaluateKnownConstInt(SemaRef.Context); |
2852 | IndexExpr = DIE->getArrayRangeEnd(*D); |
2853 | |
2854 | |
2855 | |
2856 | |
2857 | |
2858 | |
2859 | if (DesignatedStartIndex.getZExtValue()!=DesignatedEndIndex.getZExtValue()&& |
2860 | DIE->getInit()->HasSideEffects(SemaRef.Context) && !VerifyOnly) |
2861 | FullyStructuredList->sawArrayRangeDesignator(); |
2862 | } |
2863 | |
2864 | if (isa<ConstantArrayType>(AT)) { |
2865 | llvm::APSInt MaxElements(cast<ConstantArrayType>(AT)->getSize(), false); |
2866 | DesignatedStartIndex |
2867 | = DesignatedStartIndex.extOrTrunc(MaxElements.getBitWidth()); |
2868 | DesignatedStartIndex.setIsUnsigned(MaxElements.isUnsigned()); |
2869 | DesignatedEndIndex |
2870 | = DesignatedEndIndex.extOrTrunc(MaxElements.getBitWidth()); |
2871 | DesignatedEndIndex.setIsUnsigned(MaxElements.isUnsigned()); |
2872 | if (DesignatedEndIndex >= MaxElements) { |
2873 | if (!VerifyOnly) |
2874 | SemaRef.Diag(IndexExpr->getBeginLoc(), |
2875 | diag::err_array_designator_too_large) |
2876 | << toString(DesignatedEndIndex, 10) << toString(MaxElements, 10) |
2877 | << IndexExpr->getSourceRange(); |
2878 | ++Index; |
2879 | return true; |
2880 | } |
2881 | } else { |
2882 | unsigned DesignatedIndexBitWidth = |
2883 | ConstantArrayType::getMaxSizeBits(SemaRef.Context); |
2884 | DesignatedStartIndex = |
2885 | DesignatedStartIndex.extOrTrunc(DesignatedIndexBitWidth); |
2886 | DesignatedEndIndex = |
2887 | DesignatedEndIndex.extOrTrunc(DesignatedIndexBitWidth); |
2888 | DesignatedStartIndex.setIsUnsigned(true); |
2889 | DesignatedEndIndex.setIsUnsigned(true); |
2890 | } |
2891 | |
2892 | bool IsStringLiteralInitUpdate = |
2893 | StructuredList && StructuredList->isStringLiteralInit(); |
2894 | if (IsStringLiteralInitUpdate && VerifyOnly) { |
2895 | |
2896 | |
2897 | StructuredList = nullptr; |
2898 | } else if (IsStringLiteralInitUpdate) { |
2899 | |
2900 | |
2901 | ASTContext &Context = SemaRef.Context; |
2902 | Expr *SubExpr = StructuredList->getInit(0)->IgnoreParens(); |
2903 | |
2904 | |
2905 | QualType CharTy = AT->getElementType(); |
2906 | |
2907 | |
2908 | QualType PromotedCharTy = CharTy; |
2909 | if (CharTy->isPromotableIntegerType()) |
2910 | PromotedCharTy = Context.getPromotedIntegerType(CharTy); |
2911 | unsigned PromotedCharTyWidth = Context.getTypeSize(PromotedCharTy); |
2912 | |
2913 | if (StringLiteral *SL = dyn_cast<StringLiteral>(SubExpr)) { |
2914 | |
2915 | uint64_t StrLen = SL->getLength(); |
2916 | if (cast<ConstantArrayType>(AT)->getSize().ult(StrLen)) |
2917 | StrLen = cast<ConstantArrayType>(AT)->getSize().getZExtValue(); |
2918 | StructuredList->resizeInits(Context, StrLen); |
2919 | |
2920 | |
2921 | |
2922 | for (unsigned i = 0, e = StrLen; i != e; ++i) { |
2923 | llvm::APInt CodeUnit(PromotedCharTyWidth, SL->getCodeUnit(i)); |
2924 | Expr *Init = new (Context) IntegerLiteral( |
2925 | Context, CodeUnit, PromotedCharTy, SubExpr->getExprLoc()); |
2926 | if (CharTy != PromotedCharTy) |
2927 | Init = ImplicitCastExpr::Create(Context, CharTy, CK_IntegralCast, |
2928 | Init, nullptr, VK_PRValue, |
2929 | FPOptionsOverride()); |
2930 | StructuredList->updateInit(Context, i, Init); |
2931 | } |
2932 | } else { |
2933 | ObjCEncodeExpr *E = cast<ObjCEncodeExpr>(SubExpr); |
2934 | std::string Str; |
2935 | Context.getObjCEncodingForType(E->getEncodedType(), Str); |
2936 | |
2937 | |
2938 | uint64_t StrLen = Str.size(); |
2939 | if (cast<ConstantArrayType>(AT)->getSize().ult(StrLen)) |
2940 | StrLen = cast<ConstantArrayType>(AT)->getSize().getZExtValue(); |
2941 | StructuredList->resizeInits(Context, StrLen); |
2942 | |
2943 | |
2944 | |
2945 | for (unsigned i = 0, e = StrLen; i != e; ++i) { |
2946 | llvm::APInt CodeUnit(PromotedCharTyWidth, Str[i]); |
2947 | Expr *Init = new (Context) IntegerLiteral( |
2948 | Context, CodeUnit, PromotedCharTy, SubExpr->getExprLoc()); |
2949 | if (CharTy != PromotedCharTy) |
2950 | Init = ImplicitCastExpr::Create(Context, CharTy, CK_IntegralCast, |
2951 | Init, nullptr, VK_PRValue, |
2952 | FPOptionsOverride()); |
2953 | StructuredList->updateInit(Context, i, Init); |
2954 | } |
2955 | } |
2956 | } |
2957 | |
2958 | |
2959 | |
2960 | if (StructuredList && |
2961 | DesignatedEndIndex.getZExtValue() >= StructuredList->getNumInits()) |
2962 | StructuredList->resizeInits(SemaRef.Context, |
2963 | DesignatedEndIndex.getZExtValue() + 1); |
2964 | |
2965 | |
2966 | |
2967 | |
2968 | |
2969 | unsigned ElementIndex = DesignatedStartIndex.getZExtValue(); |
2970 | unsigned OldIndex = Index; |
2971 | |
2972 | InitializedEntity ElementEntity = |
2973 | InitializedEntity::InitializeElement(SemaRef.Context, 0, Entity); |
2974 | |
2975 | while (DesignatedStartIndex <= DesignatedEndIndex) { |
2976 | |
2977 | QualType ElementType = AT->getElementType(); |
2978 | Index = OldIndex; |
2979 | |
2980 | ElementEntity.setElementIndex(ElementIndex); |
2981 | if (CheckDesignatedInitializer( |
2982 | ElementEntity, IList, DIE, DesigIdx + 1, ElementType, nullptr, |
2983 | nullptr, Index, StructuredList, ElementIndex, |
2984 | FinishSubobjectInit && (DesignatedStartIndex == DesignatedEndIndex), |
2985 | false)) |
2986 | return true; |
2987 | |
2988 | |
2989 | ++DesignatedStartIndex; |
2990 | ElementIndex = DesignatedStartIndex.getZExtValue(); |
2991 | } |
2992 | |
2993 | |
2994 | |
2995 | if (IsFirstDesignator) { |
2996 | if (NextElementIndex) |
2997 | *NextElementIndex = DesignatedStartIndex; |
2998 | StructuredIndex = ElementIndex; |
2999 | return false; |
3000 | } |
3001 | |
3002 | if (!FinishSubobjectInit) |
3003 | return false; |
3004 | |
3005 | |
3006 | bool prevHadError = hadError; |
3007 | CheckArrayType(Entity, IList, CurrentObjectType, DesignatedStartIndex, |
3008 | false, Index, |
3009 | StructuredList, ElementIndex); |
3010 | return hadError && !prevHadError; |
3011 | } |
3012 | |
3013 | |
3014 | |
3015 | InitListExpr * |
3016 | InitListChecker::getStructuredSubobjectInit(InitListExpr *IList, unsigned Index, |
3017 | QualType CurrentObjectType, |
3018 | InitListExpr *StructuredList, |
3019 | unsigned StructuredIndex, |
3020 | SourceRange InitRange, |
3021 | bool IsFullyOverwritten) { |
3022 | if (!StructuredList) |
3023 | return nullptr; |
3024 | |
3025 | Expr *ExistingInit = nullptr; |
3026 | if (StructuredIndex < StructuredList->getNumInits()) |
3027 | ExistingInit = StructuredList->getInit(StructuredIndex); |
3028 | |
3029 | if (InitListExpr *Result = dyn_cast_or_null<InitListExpr>(ExistingInit)) |
3030 | |
3031 | |
3032 | |
3033 | |
3034 | |
3035 | |
3036 | |
3037 | |
3038 | if (!IsFullyOverwritten) |
3039 | return Result; |
3040 | |
3041 | if (ExistingInit) { |
3042 | |
3043 | |
3044 | |
3045 | |
3046 | |
3047 | |
3048 | |
3049 | |
3050 | |
3051 | |
3052 | |
3053 | |
3054 | |
3055 | |
3056 | |
3057 | |
3058 | |
3059 | |
3060 | |
3061 | diagnoseInitOverride(ExistingInit, InitRange); |
3062 | } |
3063 | |
3064 | unsigned ExpectedNumInits = 0; |
3065 | if (Index < IList->getNumInits()) { |
3066 | if (auto *Init = dyn_cast_or_null<InitListExpr>(IList->getInit(Index))) |
3067 | ExpectedNumInits = Init->getNumInits(); |
3068 | else |
3069 | ExpectedNumInits = IList->getNumInits() - Index; |
3070 | } |
3071 | |
3072 | InitListExpr *Result = |
3073 | createInitListExpr(CurrentObjectType, InitRange, ExpectedNumInits); |
3074 | |
3075 | |
3076 | |
3077 | StructuredList->updateInit(SemaRef.Context, StructuredIndex, Result); |
3078 | return Result; |
3079 | } |
3080 | |
3081 | InitListExpr * |
3082 | InitListChecker::createInitListExpr(QualType CurrentObjectType, |
3083 | SourceRange InitRange, |
3084 | unsigned ExpectedNumInits) { |
3085 | InitListExpr *Result |
3086 | = new (SemaRef.Context) InitListExpr(SemaRef.Context, |
3087 | InitRange.getBegin(), None, |
3088 | InitRange.getEnd()); |
3089 | |
3090 | QualType ResultType = CurrentObjectType; |
3091 | if (!ResultType->isArrayType()) |
3092 | ResultType = ResultType.getNonLValueExprType(SemaRef.Context); |
3093 | Result->setType(ResultType); |
3094 | |
3095 | |
3096 | unsigned NumElements = 0; |
3097 | |
3098 | if (const ArrayType *AType |
3099 | = SemaRef.Context.getAsArrayType(CurrentObjectType)) { |
3100 | if (const ConstantArrayType *CAType = dyn_cast<ConstantArrayType>(AType)) { |
3101 | NumElements = CAType->getSize().getZExtValue(); |
3102 | |
3103 | |
3104 | if (NumElements > ExpectedNumInits) |
3105 | NumElements = 0; |
3106 | } |
3107 | } else if (const VectorType *VType = CurrentObjectType->getAs<VectorType>()) { |
3108 | NumElements = VType->getNumElements(); |
3109 | } else if (CurrentObjectType->isRecordType()) { |
3110 | NumElements = numStructUnionElements(CurrentObjectType); |
3111 | } |
3112 | |
3113 | Result->reserveInits(SemaRef.Context, NumElements); |
3114 | |
3115 | return Result; |
3116 | } |
3117 | |
3118 | |
3119 | |
3120 | void InitListChecker::UpdateStructuredListElement(InitListExpr *StructuredList, |
3121 | unsigned &StructuredIndex, |
3122 | Expr *expr) { |
3123 | |
3124 | if (!StructuredList) |
3125 | return; |
3126 | |
3127 | if (Expr *PrevInit = StructuredList->updateInit(SemaRef.Context, |
3128 | StructuredIndex, expr)) { |
3129 | |
3130 | |
3131 | |
3132 | |
3133 | if (expr) |
3134 | diagnoseInitOverride(PrevInit, expr->getSourceRange()); |
3135 | } |
3136 | |
3137 | ++StructuredIndex; |
3138 | } |
3139 | |
3140 | |
3141 | |
3142 | bool Sema::CanPerformAggregateInitializationForOverloadResolution( |
3143 | const InitializedEntity &Entity, InitListExpr *From) { |
3144 | QualType Type = Entity.getType(); |
3145 | InitListChecker Check(*this, Entity, From, Type, true, |
3146 | false, |
3147 | true); |
3148 | return !Check.HadError(); |
3149 | } |
3150 | |
3151 | |
3152 | |
3153 | |
3154 | |
3155 | |
3156 | |
3157 | |
3158 | static ExprResult |
3159 | CheckArrayDesignatorExpr(Sema &S, Expr *Index, llvm::APSInt &Value) { |
3160 | SourceLocation Loc = Index->getBeginLoc(); |
3161 | |
3162 | |
3163 | ExprResult Result = |
3164 | S.VerifyIntegerConstantExpression(Index, &Value, Sema::AllowFold); |
3165 | if (Result.isInvalid()) |
3166 | return Result; |
3167 | |
3168 | if (Value.isSigned() && Value.isNegative()) |
3169 | return S.Diag(Loc, diag::err_array_designator_negative) |
3170 | << toString(Value, 10) << Index->getSourceRange(); |
3171 | |
3172 | Value.setIsUnsigned(true); |
3173 | return Result; |
3174 | } |
3175 | |
3176 | ExprResult Sema::ActOnDesignatedInitializer(Designation &Desig, |
3177 | SourceLocation EqualOrColonLoc, |
3178 | bool GNUSyntax, |
3179 | ExprResult Init) { |
3180 | typedef DesignatedInitExpr::Designator ASTDesignator; |
3181 | |
3182 | bool Invalid = false; |
3183 | SmallVector<ASTDesignator, 32> Designators; |
3184 | SmallVector<Expr *, 32> InitExpressions; |
3185 | |
3186 | |
3187 | for (unsigned Idx = 0; Idx < Desig.getNumDesignators(); ++Idx) { |
3188 | const Designator &D = Desig.getDesignator(Idx); |
3189 | switch (D.getKind()) { |
3190 | case Designator::FieldDesignator: |
3191 | Designators.push_back(ASTDesignator(D.getField(), D.getDotLoc(), |
3192 | D.getFieldLoc())); |
3193 | break; |
3194 | |
3195 | case Designator::ArrayDesignator: { |
3196 | Expr *Index = static_cast<Expr *>(D.getArrayIndex()); |
3197 | llvm::APSInt IndexValue; |
3198 | if (!Index->isTypeDependent() && !Index->isValueDependent()) |
3199 | Index = CheckArrayDesignatorExpr(*this, Index, IndexValue).get(); |
3200 | if (!Index) |
3201 | Invalid = true; |
3202 | else { |
3203 | Designators.push_back(ASTDesignator(InitExpressions.size(), |
3204 | D.getLBracketLoc(), |
3205 | D.getRBracketLoc())); |
3206 | InitExpressions.push_back(Index); |
3207 | } |
3208 | break; |
3209 | } |
3210 | |
3211 | case Designator::ArrayRangeDesignator: { |
3212 | Expr *StartIndex = static_cast<Expr *>(D.getArrayRangeStart()); |
3213 | Expr *EndIndex = static_cast<Expr *>(D.getArrayRangeEnd()); |
3214 | llvm::APSInt StartValue; |
3215 | llvm::APSInt EndValue; |
3216 | bool StartDependent = StartIndex->isTypeDependent() || |
3217 | StartIndex->isValueDependent(); |
3218 | bool EndDependent = EndIndex->isTypeDependent() || |
3219 | EndIndex->isValueDependent(); |
3220 | if (!StartDependent) |
3221 | StartIndex = |
3222 | CheckArrayDesignatorExpr(*this, StartIndex, StartValue).get(); |
3223 | if (!EndDependent) |
3224 | EndIndex = CheckArrayDesignatorExpr(*this, EndIndex, EndValue).get(); |
3225 | |
3226 | if (!StartIndex || !EndIndex) |
3227 | Invalid = true; |
3228 | else { |
3229 | |
3230 | if (StartDependent || EndDependent) { |
3231 | |
3232 | } else if (StartValue.getBitWidth() > EndValue.getBitWidth()) |
3233 | EndValue = EndValue.extend(StartValue.getBitWidth()); |
3234 | else if (StartValue.getBitWidth() < EndValue.getBitWidth()) |
3235 | StartValue = StartValue.extend(EndValue.getBitWidth()); |
3236 | |
3237 | if (!StartDependent && !EndDependent && EndValue < StartValue) { |
3238 | Diag(D.getEllipsisLoc(), diag::err_array_designator_empty_range) |
3239 | << toString(StartValue, 10) << toString(EndValue, 10) |
3240 | << StartIndex->getSourceRange() << EndIndex->getSourceRange(); |
3241 | Invalid = true; |
3242 | } else { |
3243 | Designators.push_back(ASTDesignator(InitExpressions.size(), |
3244 | D.getLBracketLoc(), |
3245 | D.getEllipsisLoc(), |
3246 | D.getRBracketLoc())); |
3247 | InitExpressions.push_back(StartIndex); |
3248 | InitExpressions.push_back(EndIndex); |
3249 | } |
3250 | } |
3251 | break; |
3252 | } |
3253 | } |
3254 | } |
3255 | |
3256 | if (Invalid || Init.isInvalid()) |
3257 | return ExprError(); |
3258 | |
3259 | |
3260 | Desig.ClearExprs(*this); |
3261 | |
3262 | return DesignatedInitExpr::Create(Context, Designators, InitExpressions, |
3263 | EqualOrColonLoc, GNUSyntax, |
3264 | Init.getAs<Expr>()); |
3265 | } |
3266 | |
3267 | |
3268 | |
3269 | |
3270 | |
3271 | InitializedEntity::InitializedEntity(ASTContext &Context, unsigned Index, |
3272 | const InitializedEntity &Parent) |
3273 | : Parent(&Parent), Index(Index) |
3274 | { |
3275 | if (const ArrayType *AT = Context.getAsArrayType(Parent.getType())) { |
3276 | Kind = EK_ArrayElement; |
3277 | Type = AT->getElementType(); |
3278 | } else if (const VectorType *VT = Parent.getType()->getAs<VectorType>()) { |
3279 | Kind = EK_VectorElement; |
3280 | Type = VT->getElementType(); |
3281 | } else { |
3282 | const ComplexType *CT = Parent.getType()->getAs<ComplexType>(); |
3283 | assert(CT && "Unexpected type"); |
3284 | Kind = EK_ComplexElement; |
3285 | Type = CT->getElementType(); |
3286 | } |
3287 | } |
3288 | |
3289 | InitializedEntity |
3290 | InitializedEntity::InitializeBase(ASTContext &Context, |
3291 | const CXXBaseSpecifier *Base, |
3292 | bool IsInheritedVirtualBase, |
3293 | const InitializedEntity *Parent) { |
3294 | InitializedEntity Result; |
3295 | Result.Kind = EK_Base; |
3296 | Result.Parent = Parent; |
3297 | Result.Base = {Base, IsInheritedVirtualBase}; |
3298 | Result.Type = Base->getType(); |
3299 | return Result; |
3300 | } |
3301 | |
3302 | DeclarationName InitializedEntity::getName() const { |
3303 | switch (getKind()) { |
3304 | case EK_Parameter: |
3305 | case EK_Parameter_CF_Audited: { |
3306 | ParmVarDecl *D = Parameter.getPointer(); |
3307 | return (D ? D->getDeclName() : DeclarationName()); |
3308 | } |
3309 | |
3310 | case EK_Variable: |
3311 | case EK_Member: |
3312 | case EK_Binding: |
3313 | case EK_TemplateParameter: |
3314 | return Variable.VariableOrMember->getDeclName(); |
3315 | |
3316 | case EK_LambdaCapture: |
3317 | return DeclarationName(Capture.VarID); |
3318 | |
3319 | case EK_Result: |
3320 | case EK_StmtExprResult: |
3321 | case EK_Exception: |
3322 | case EK_New: |
3323 | case EK_Temporary: |
3324 | case EK_Base: |
3325 | case EK_Delegating: |
3326 | case EK_ArrayElement: |
3327 | case EK_VectorElement: |
3328 | case EK_ComplexElement: |
3329 | case EK_BlockElement: |
3330 | case EK_LambdaToBlockConversionBlockElement: |
3331 | case EK_CompoundLiteralInit: |
3332 | case EK_RelatedResult: |
3333 | return DeclarationName(); |
3334 | } |
3335 | |
3336 | llvm_unreachable("Invalid EntityKind!"); |
3337 | } |
3338 | |
3339 | ValueDecl *InitializedEntity::getDecl() const { |
3340 | switch (getKind()) { |
3341 | case EK_Variable: |
3342 | case EK_Member: |
3343 | case EK_Binding: |
3344 | case EK_TemplateParameter: |
3345 | return Variable.VariableOrMember; |
3346 | |
3347 | case EK_Parameter: |
3348 | case EK_Parameter_CF_Audited: |
3349 | return Parameter.getPointer(); |
3350 | |
3351 | case EK_Result: |
3352 | case EK_StmtExprResult: |
3353 | case EK_Exception: |
3354 | case EK_New: |
3355 | case EK_Temporary: |
3356 | case EK_Base: |
3357 | case EK_Delegating: |
3358 | case EK_ArrayElement: |
3359 | case EK_VectorElement: |
3360 | case EK_ComplexElement: |
3361 | case EK_BlockElement: |
3362 | case EK_LambdaToBlockConversionBlockElement: |
3363 | case EK_LambdaCapture: |
3364 | case EK_CompoundLiteralInit: |
3365 | case EK_RelatedResult: |
3366 | return nullptr; |
3367 | } |
3368 | |
3369 | llvm_unreachable("Invalid EntityKind!"); |
3370 | } |
3371 | |
3372 | bool InitializedEntity::allowsNRVO() const { |
3373 | switch (getKind()) { |
3374 | case EK_Result: |
3375 | case EK_Exception: |
3376 | return LocAndNRVO.NRVO; |
3377 | |
3378 | case EK_StmtExprResult: |
3379 | case EK_Variable: |
3380 | case EK_Parameter: |
3381 | case EK_Parameter_CF_Audited: |
3382 | case EK_TemplateParameter: |
3383 | case EK_Member: |
3384 | case EK_Binding: |
3385 | case EK_New: |
3386 | case EK_Temporary: |
3387 | case EK_CompoundLiteralInit: |
3388 | case EK_Base: |
3389 | case EK_Delegating: |
3390 | case EK_ArrayElement: |
3391 | case EK_VectorElement: |
3392 | case EK_ComplexElement: |
3393 | case EK_BlockElement: |
3394 | case EK_LambdaToBlockConversionBlockElement: |
3395 | case EK_LambdaCapture: |
3396 | case EK_RelatedResult: |
3397 | break; |
3398 | } |
3399 | |
3400 | return false; |
3401 | } |
3402 | |
3403 | unsigned InitializedEntity::dumpImpl(raw_ostream &OS) const { |
3404 | assert(getParent() != this); |
3405 | unsigned Depth = getParent() ? getParent()->dumpImpl(OS) : 0; |
3406 | for (unsigned I = 0; I != Depth; ++I) |
3407 | OS << "`-"; |
3408 | |
3409 | switch (getKind()) { |
3410 | case EK_Variable: OS << "Variable"; break; |
3411 | case EK_Parameter: OS << "Parameter"; break; |
3412 | case EK_Parameter_CF_Audited: OS << "CF audited function Parameter"; |
3413 | break; |
3414 | case EK_TemplateParameter: OS << "TemplateParameter"; break; |
3415 | case EK_Result: OS << "Result"; break; |
3416 | case EK_StmtExprResult: OS << "StmtExprResult"; break; |
3417 | case EK_Exception: OS << "Exception"; break; |
3418 | case EK_Member: OS << "Member"; break; |
3419 | case EK_Binding: OS << "Binding"; break; |
3420 | case EK_New: OS << "New"; break; |
3421 | case EK_Temporary: OS << "Temporary"; break; |
3422 | case EK_CompoundLiteralInit: OS << "CompoundLiteral";break; |
3423 | case EK_RelatedResult: OS << "RelatedResult"; break; |
3424 | case EK_Base: OS << "Base"; break; |
3425 | case EK_Delegating: OS << "Delegating"; break; |
3426 | case EK_ArrayElement: OS << "ArrayElement " << Index; break; |
3427 | case EK_VectorElement: OS << "VectorElement " << Index; break; |
3428 | case EK_ComplexElement: OS << "ComplexElement " << Index; break; |
3429 | case EK_BlockElement: OS << "Block"; break; |
3430 | case EK_LambdaToBlockConversionBlockElement: |
3431 | OS << "Block (lambda)"; |
3432 | break; |
3433 | case EK_LambdaCapture: |
3434 | OS << "LambdaCapture "; |
3435 | OS << DeclarationName(Capture.VarID); |
3436 | break; |
3437 | } |
3438 | |
3439 | if (auto *D = getDecl()) { |
3440 | OS << " "; |
3441 | D->printQualifiedName(OS); |
3442 | } |
3443 | |
3444 | OS << " '" << getType().getAsString() << "'\n"; |
3445 | |
3446 | return Depth + 1; |
3447 | } |
3448 | |
3449 | LLVM_DUMP_METHOD void InitializedEntity::dump() const { |
3450 | dumpImpl(llvm::errs()); |
3451 | } |
3452 | |
3453 | |
3454 | |
3455 | |
3456 | |
3457 | void InitializationSequence::Step::Destroy() { |
3458 | switch (Kind) { |
3459 | case SK_ResolveAddressOfOverloadedFunction: |
3460 | case SK_CastDerivedToBasePRValue: |
3461 | case SK_CastDerivedToBaseXValue: |
3462 | case SK_CastDerivedToBaseLValue: |
3463 | case SK_BindReference: |
3464 | case SK_BindReferenceToTemporary: |
3465 | case SK_FinalCopy: |
3466 | case SK_ExtraneousCopyToTemporary: |
3467 | case SK_UserConversion: |
3468 | case SK_QualificationConversionPRValue: |
3469 | case SK_QualificationConversionXValue: |
3470 | case SK_QualificationConversionLValue: |
3471 | case SK_FunctionReferenceConversion: |
3472 | case SK_AtomicConversion: |
3473 | case SK_ListInitialization: |
3474 | case SK_UnwrapInitList: |
3475 | case SK_RewrapInitList: |
3476 | case SK_ConstructorInitialization: |
3477 | case SK_ConstructorInitializationFromList: |
3478 | case SK_ZeroInitialization: |
3479 | case SK_CAssignment: |
3480 | case SK_StringInit: |
3481 | case SK_ObjCObjectConversion: |
3482 | case SK_ArrayLoopIndex: |
3483 | case SK_ArrayLoopInit: |
3484 | case SK_ArrayInit: |
3485 | case SK_GNUArrayInit: |
3486 | case SK_ParenthesizedArrayInit: |
3487 | case SK_PassByIndirectCopyRestore: |
3488 | case SK_PassByIndirectRestore: |
3489 | case SK_ProduceObjCObject: |
3490 | case SK_StdInitializerList: |
3491 | case SK_StdInitializerListConstructorCall: |
3492 | case SK_OCLSamplerInit: |
3493 | case SK_OCLZeroOpaqueType: |
3494 | break; |
3495 | |
3496 | case SK_ConversionSequence: |
3497 | case SK_ConversionSequenceNoNarrowing: |
3498 | delete ICS; |
3499 | } |
3500 | } |
3501 | |
3502 | bool InitializationSequence::isDirectReferenceBinding() const { |
3503 | |
3504 | for (auto I = Steps.rbegin(); I != Steps.rend(); ++I) { |
3505 | if (I->Kind == SK_BindReference) |
3506 | return true; |
3507 | if (I->Kind == SK_BindReferenceToTemporary) |
3508 | return false; |
3509 | } |
3510 | return false; |
3511 | } |
3512 | |
3513 | bool InitializationSequence::isAmbiguous() const { |
3514 | if (!Failed()) |
3515 | return false; |
3516 | |
3517 | switch (getFailureKind()) { |
3518 | case FK_TooManyInitsForReference: |
3519 | case FK_ParenthesizedListInitForReference: |
3520 | case FK_ArrayNeedsInitList: |
3521 | case FK_ArrayNeedsInitListOrStringLiteral: |
3522 | case FK_ArrayNeedsInitListOrWideStringLiteral: |
3523 | case FK_NarrowStringIntoWideCharArray: |
3524 | case FK_WideStringIntoCharArray: |
3525 | case FK_IncompatWideStringIntoWideChar: |
3526 | case FK_PlainStringIntoUTF8Char: |
3527 | case FK_UTF8StringIntoPlainChar: |
3528 | case FK_AddressOfOverloadFailed: |
3529 | case FK_NonConstLValueReferenceBindingToTemporary: |
3530 | case FK_NonConstLValueReferenceBindingToBitfield: |
3531 | case FK_NonConstLValueReferenceBindingToVectorElement: |
3532 | case FK_NonConstLValueReferenceBindingToMatrixElement: |
3533 | case FK_NonConstLValueReferenceBindingToUnrelated: |
3534 | case FK_RValueReferenceBindingToLValue: |
3535 | case FK_ReferenceAddrspaceMismatchTemporary: |
3536 | case FK_ReferenceInitDropsQualifiers: |
3537 | case FK_ReferenceInitFailed: |
3538 | case FK_ConversionFailed: |
3539 | case FK_ConversionFromPropertyFailed: |
3540 | case FK_TooManyInitsForScalar: |
3541 | case FK_ParenthesizedListInitForScalar: |
3542 | case FK_ReferenceBindingToInitList: |
3543 | case FK_InitListBadDestinationType: |
3544 | case FK_DefaultInitOfConst: |
3545 | case FK_Incomplete: |
3546 | case FK_ArrayTypeMismatch: |
3547 | case FK_NonConstantArrayInit: |
3548 | case FK_ListInitializationFailed: |
3549 | case FK_VariableLengthArrayHasInitializer: |
3550 | case FK_PlaceholderType: |
3551 | case FK_ExplicitConstructor: |
3552 | case FK_AddressOfUnaddressableFunction: |
3553 | return false; |
3554 | |
3555 | case FK_ReferenceInitOverloadFailed: |
3556 | case FK_UserConversionOverloadFailed: |
3557 | case FK_ConstructorOverloadFailed: |
3558 | case FK_ListConstructorOverloadFailed: |
3559 | return FailedOverloadResult == OR_Ambiguous; |
3560 | } |
3561 | |
3562 | llvm_unreachable("Invalid EntityKind!"); |
3563 | } |
3564 | |
3565 | bool InitializationSequence::isConstructorInitialization() const { |
3566 | return !Steps.empty() && Steps.back().Kind == SK_ConstructorInitialization; |
3567 | } |
3568 | |
3569 | void |
3570 | InitializationSequence |
3571 | ::AddAddressOverloadResolutionStep(FunctionDecl *Function, |
3572 | DeclAccessPair Found, |
3573 | bool HadMultipleCandidates) { |
3574 | Step S; |
3575 | S.Kind = SK_ResolveAddressOfOverloadedFunction; |
3576 | S.Type = Function->getType(); |
3577 | S.Function.HadMultipleCandidates = HadMultipleCandidates; |
3578 | S.Function.Function = Function; |
3579 | S.Function.FoundDecl = Found; |
3580 | Steps.push_back(S); |
3581 | } |
3582 | |
3583 | void InitializationSequence::AddDerivedToBaseCastStep(QualType BaseType, |
3584 | ExprValueKind VK) { |
3585 | Step S; |
3586 | switch (VK) { |
3587 | case VK_PRValue: |
3588 | S.Kind = SK_CastDerivedToBasePRValue; |
3589 | break; |
3590 | case VK_XValue: S.Kind = SK_CastDerivedToBaseXValue; break; |
3591 | case VK_LValue: S.Kind = SK_CastDerivedToBaseLValue; break; |
3592 | } |
3593 | S.Type = BaseType; |
3594 | Steps.push_back(S); |
3595 | } |
3596 | |
3597 | void InitializationSequence::AddReferenceBindingStep(QualType T, |
3598 | bool BindingTemporary) { |
3599 | Step S; |
3600 | S.Kind = BindingTemporary? SK_BindReferenceToTemporary : SK_BindReference; |
3601 | S.Type = T; |
3602 | Steps.push_back(S); |
3603 | } |
3604 | |
3605 | void InitializationSequence::AddFinalCopy(QualType T) { |
3606 | Step S; |
3607 | S.Kind = SK_FinalCopy; |
3608 | S.Type = T; |
3609 | Steps.push_back(S); |
3610 | } |
3611 | |
3612 | void InitializationSequence::AddExtraneousCopyToTemporary(QualType T) { |
3613 | Step S; |
3614 | S.Kind = SK_ExtraneousCopyToTemporary; |
3615 | S.Type = T; |
3616 | Steps.push_back(S); |
3617 | } |
3618 | |
3619 | void |
3620 | InitializationSequence::AddUserConversionStep(FunctionDecl *Function, |
3621 | DeclAccessPair FoundDecl, |
3622 | QualType T, |
3623 | bool HadMultipleCandidates) { |
3624 | Step S; |
3625 | S.Kind = SK_UserConversion; |
3626 | S.Type = T; |
3627 | S.Function.HadMultipleCandidates = HadMultipleCandidates; |
3628 | S.Function.Function = Function; |
3629 | S.Function.FoundDecl = FoundDecl; |
3630 | Steps.push_back(S); |
3631 | } |
3632 | |
3633 | void InitializationSequence::AddQualificationConversionStep(QualType Ty, |
3634 | ExprValueKind VK) { |
3635 | Step S; |
3636 | S.Kind = SK_QualificationConversionPRValue; |
3637 | switch (VK) { |
3638 | case VK_PRValue: |
3639 | S.Kind = SK_QualificationConversionPRValue; |
3640 | break; |
3641 | case VK_XValue: |
3642 | S.Kind = SK_QualificationConversionXValue; |
3643 | break; |
3644 | case VK_LValue: |
3645 | S.Kind = SK_QualificationConversionLValue; |
3646 | break; |
3647 | } |
3648 | S.Type = Ty; |
3649 | Steps.push_back(S); |
3650 | } |
3651 | |
3652 | void InitializationSequence::AddFunctionReferenceConversionStep(QualType Ty) { |
3653 | Step S; |
3654 | S.Kind = SK_FunctionReferenceConversion; |
3655 | S.Type = Ty; |
3656 | Steps.push_back(S); |
3657 | } |
3658 | |
3659 | void InitializationSequence::AddAtomicConversionStep(QualType Ty) { |
3660 | Step S; |
3661 | S.Kind = SK_AtomicConversion; |
3662 | S.Type = Ty; |
3663 | Steps.push_back(S); |
3664 | } |
3665 | |
3666 | void InitializationSequence::AddConversionSequenceStep( |
3667 | const ImplicitConversionSequence &ICS, QualType T, |
3668 | bool TopLevelOfInitList) { |
3669 | Step S; |
3670 | S.Kind = TopLevelOfInitList ? SK_ConversionSequenceNoNarrowing |
3671 | : SK_ConversionSequence; |
3672 | S.Type = T; |
3673 | S.ICS = new ImplicitConversionSequence(ICS); |
3674 | Steps.push_back(S); |
3675 | } |
3676 | |
3677 | void InitializationSequence::AddListInitializationStep(QualType T) { |
3678 | Step S; |
3679 | S.Kind = SK_ListInitialization; |
3680 | S.Type = T; |
3681 | Steps.push_back(S); |
3682 | } |
3683 | |
3684 | void InitializationSequence::AddConstructorInitializationStep( |
3685 | DeclAccessPair FoundDecl, CXXConstructorDecl *Constructor, QualType T, |
3686 | bool HadMultipleCandidates, bool FromInitList, bool AsInitList) { |
3687 | Step S; |
3688 | S.Kind = FromInitList ? AsInitList ? SK_StdInitializerListConstructorCall |
3689 | : SK_ConstructorInitializationFromList |
3690 | : SK_ConstructorInitialization; |
3691 | S.Type = T; |
3692 | S.Function.HadMultipleCandidates = HadMultipleCandidates; |
3693 | S.Function.Function = Constructor; |
3694 | S.Function.FoundDecl = FoundDecl; |
3695 | Steps.push_back(S); |
3696 | } |
3697 | |
3698 | void InitializationSequence::AddZeroInitializationStep(QualType T) { |
3699 | Step S; |
3700 | S.Kind = SK_ZeroInitialization; |
3701 | S.Type = T; |
3702 | Steps.push_back(S); |
3703 | } |
3704 | |
3705 | void InitializationSequence::AddCAssignmentStep(QualType T) { |
3706 | Step S; |
3707 | S.Kind = SK_CAssignment; |
3708 | S.Type = T; |
3709 | Steps.push_back(S); |
3710 | } |
3711 | |
3712 | void InitializationSequence::AddStringInitStep(QualType T) { |
3713 | Step S; |
3714 | S.Kind = SK_StringInit; |
3715 | S.Type = T; |
3716 | Steps.push_back(S); |
3717 | } |
3718 | |
3719 | void InitializationSequence::AddObjCObjectConversionStep(QualType T) { |
3720 | Step S; |
3721 | S.Kind = SK_ObjCObjectConversion; |
3722 | S.Type = T; |
3723 | Steps.push_back(S); |
3724 | } |
3725 | |
3726 | void InitializationSequence::AddArrayInitStep(QualType T, bool IsGNUExtension) { |
3727 | Step S; |
3728 | S.Kind = IsGNUExtension ? SK_GNUArrayInit : SK_ArrayInit; |
3729 | S.Type = T; |
3730 | Steps.push_back(S); |
3731 | } |
3732 | |
3733 | void InitializationSequence::AddArrayInitLoopStep(QualType T, QualType EltT) { |
3734 | Step S; |
3735 | S.Kind = SK_ArrayLoopIndex; |
3736 | S.Type = EltT; |
3737 | Steps.insert(Steps.begin(), S); |
3738 | |
3739 | S.Kind = SK_ArrayLoopInit; |
3740 | S.Type = T; |
3741 | Steps.push_back(S); |
3742 | } |
3743 | |
3744 | void InitializationSequence::AddParenthesizedArrayInitStep(QualType T) { |
3745 | Step S; |
3746 | S.Kind = SK_ParenthesizedArrayInit; |
3747 | S.Type = T; |
3748 | Steps.push_back(S); |
3749 | } |
3750 | |
3751 | void InitializationSequence::AddPassByIndirectCopyRestoreStep(QualType type, |
3752 | bool shouldCopy) { |
3753 | Step s; |
3754 | s.Kind = (shouldCopy ? SK_PassByIndirectCopyRestore |
3755 | : SK_PassByIndirectRestore); |
3756 | s.Type = type; |
3757 | Steps.push_back(s); |
3758 | } |
3759 | |
3760 | void InitializationSequence::AddProduceObjCObjectStep(QualType T) { |
3761 | Step S; |
3762 | S.Kind = SK_ProduceObjCObject; |
3763 | S.Type = T; |
3764 | Steps.push_back(S); |
3765 | } |
3766 | |
3767 | void InitializationSequence::AddStdInitializerListConstructionStep(QualType T) { |
3768 | Step S; |
3769 | S.Kind = SK_StdInitializerList; |
3770 | S.Type = T; |
3771 | Steps.push_back(S); |
3772 | } |
3773 | |
3774 | void InitializationSequence::AddOCLSamplerInitStep(QualType T) { |
3775 | Step S; |
3776 | S.Kind = SK_OCLSamplerInit; |
3777 | S.Type = T; |
3778 | Steps.push_back(S); |
3779 | } |
3780 | |
3781 | void InitializationSequence::AddOCLZeroOpaqueTypeStep(QualType T) { |
3782 | Step S; |
3783 | S.Kind = SK_OCLZeroOpaqueType; |
3784 | S.Type = T; |
3785 | Steps.push_back(S); |
3786 | } |
3787 | |
3788 | void InitializationSequence::RewrapReferenceInitList(QualType T, |
3789 | InitListExpr *Syntactic) { |
3790 | assert(Syntactic->getNumInits() == 1 && |
3791 | "Can only rewrap trivial init lists."); |
3792 | Step S; |
3793 | S.Kind = SK_UnwrapInitList; |
3794 | S.Type = Syntactic->getInit(0)->getType(); |
3795 | Steps.insert(Steps.begin(), S); |
3796 | |
3797 | S.Kind = SK_RewrapInitList; |
3798 | S.Type = T; |
3799 | S.WrappingSyntacticList = Syntactic; |
3800 | Steps.push_back(S); |
3801 | } |
3802 | |
3803 | void InitializationSequence::SetOverloadFailure(FailureKind Failure, |
3804 | OverloadingResult Result) { |
3805 | setSequenceKind(FailedSequence); |
3806 | this->Failure = Failure; |
3807 | this->FailedOverloadResult = Result; |
3808 | } |
3809 | |
3810 | |
3811 | |
3812 | |
3813 | |
3814 | |
3815 | static bool |
3816 | maybeRecoverWithZeroInitialization(Sema &S, InitializationSequence &Sequence, |
3817 | const InitializedEntity &Entity) { |
3818 | if (Entity.getKind() != InitializedEntity::EK_Variable) |
3819 | return false; |
3820 | |
3821 | VarDecl *VD = cast<VarDecl>(Entity.getDecl()); |
3822 | if (VD->getInit() || VD->getEndLoc().isMacroID()) |
3823 | return false; |
3824 | |
3825 | QualType VariableTy = VD->getType().getCanonicalType(); |
3826 | SourceLocation Loc = S.getLocForEndOfToken(VD->getEndLoc()); |
3827 | std::string Init = S.getFixItZeroInitializerForType(VariableTy, Loc); |
3828 | if (!Init.empty()) { |
3829 | Sequence.AddZeroInitializationStep(Entity.getType()); |
3830 | Sequence.SetZeroInitializationFixit(Init, Loc); |
3831 | return true; |
3832 | } |
3833 | return false; |
3834 | } |
3835 | |
3836 | static void MaybeProduceObjCObject(Sema &S, |
3837 | InitializationSequence &Sequence, |
3838 | const InitializedEntity &Entity) { |
3839 | if (!S.getLangOpts().ObjCAutoRefCount) return; |
3840 | |
3841 | |
3842 | |
3843 | if (Entity.isParameterKind()) { |
3844 | if (!Entity.isParameterConsumed()) |
3845 | return; |
3846 | |
3847 | assert(Entity.getType()->isObjCRetainableType() && |
3848 | "consuming an object of unretainable type?"); |
3849 | Sequence.AddProduceObjCObjectStep(Entity.getType()); |
3850 | |
3851 | |
3852 | |
3853 | |
3854 | |
3855 | } else if (Entity.getKind() == InitializedEntity::EK_Result || |
3856 | Entity.getKind() == InitializedEntity::EK_StmtExprResult) { |
3857 | if (!Entity.getType()->isObjCRetainableType()) |
3858 | return; |
3859 | |
3860 | Sequence.AddProduceObjCObjectStep(Entity.getType()); |
3861 | } |
3862 | } |
3863 | |
3864 | static void TryListInitialization(Sema &S, |
3865 | const InitializedEntity &Entity, |
3866 | const InitializationKind &Kind, |
3867 | InitListExpr *InitList, |
3868 | InitializationSequence &Sequence, |
3869 | bool TreatUnavailableAsInvalid); |
3870 | |
3871 | |
3872 | |
3873 | |
3874 | |
3875 | |
3876 | static bool TryInitializerListConstruction(Sema &S, |
3877 | InitListExpr *List, |
3878 | QualType DestType, |
3879 | InitializationSequence &Sequence, |
3880 | bool TreatUnavailableAsInvalid) { |
3881 | QualType E; |
3882 | if (!S.isStdInitializerList(DestType, &E)) |
3883 | return false; |
3884 | |
3885 | if (!S.isCompleteType(List->getExprLoc(), E)) { |
3886 | Sequence.setIncompleteTypeFailure(E); |
3887 | return true; |
3888 | } |
3889 | |
3890 | |
3891 | QualType ArrayType = S.Context.getConstantArrayType( |
3892 | E.withConst(), |
3893 | llvm::APInt(S.Context.getTypeSize(S.Context.getSizeType()), |
3894 | List->getNumInits()), |
3895 | nullptr, clang::ArrayType::Normal, 0); |
3896 | InitializedEntity HiddenArray = |
3897 | InitializedEntity::InitializeTemporary(ArrayType); |
3898 | InitializationKind Kind = InitializationKind::CreateDirectList( |
3899 | List->getExprLoc(), List->getBeginLoc(), List->getEndLoc()); |
3900 | TryListInitialization(S, HiddenArray, Kind, List, Sequence, |
3901 | TreatUnavailableAsInvalid); |
3902 | if (Sequence) |
3903 | Sequence.AddStdInitializerListConstructionStep(DestType); |
3904 | return true; |
3905 | } |
3906 | |
3907 | |
3908 | |
3909 | |
3910 | |
3911 | static bool hasCopyOrMoveCtorParam(ASTContext &Ctx, |
3912 | const ConstructorInfo &Info) { |
3913 | if (Info.Constructor->getNumParams() == 0) |
| 38 | | Called C++ object pointer is null |
|
3914 | return false; |
3915 | |
3916 | QualType ParmT = |
3917 | Info.Constructor->getParamDecl(0)->getType().getNonReferenceType(); |
3918 | QualType ClassT = |
3919 | Ctx.getRecordType(cast<CXXRecordDecl>(Info.FoundDecl->getDeclContext())); |
3920 | |
3921 | return Ctx.hasSameUnqualifiedType(ParmT, ClassT); |
3922 | } |
3923 | |
3924 | static OverloadingResult |
3925 | ResolveConstructorOverload(Sema &S, SourceLocation DeclLoc, |
3926 | MultiExprArg Args, |
3927 | OverloadCandidateSet &CandidateSet, |
3928 | QualType DestType, |
3929 | DeclContext::lookup_result Ctors, |
3930 | OverloadCandidateSet::iterator &Best, |
3931 | bool CopyInitializing, bool AllowExplicit, |
3932 | bool OnlyListConstructors, bool IsListInit, |
3933 | bool SecondStepOfCopyInit = false) { |
3934 | CandidateSet.clear(OverloadCandidateSet::CSK_InitByConstructor); |
3935 | CandidateSet.setDestAS(DestType.getQualifiers().getAddressSpace()); |
3936 | |
3937 | for (NamedDecl *D : Ctors) { |
3938 | auto Info = getConstructorInfo(D); |
3939 | if (!Info.Constructor || Info.Constructor->isInvalidDecl()) |
3940 | continue; |
3941 | |
3942 | if (OnlyListConstructors && !S.isInitListConstructor(Info.Constructor)) |
3943 | continue; |
3944 | |
3945 | |
3946 | |
3947 | |
3948 | |
3949 | |
3950 | |
3951 | |
3952 | |
3953 | |
3954 | |
3955 | |
3956 | bool SuppressUserConversions = |
3957 | SecondStepOfCopyInit || |
3958 | (IsListInit && Args.size() == 1 && isa<InitListExpr>(Args[0]) && |
3959 | hasCopyOrMoveCtorParam(S.Context, Info)); |
3960 | |
3961 | if (Info.ConstructorTmpl) |
3962 | S.AddTemplateOverloadCandidate( |
3963 | Info.ConstructorTmpl, Info.FoundDecl, |
3964 | nullptr, Args, CandidateSet, SuppressUserConversions, |
3965 | false, AllowExplicit); |
3966 | else { |
3967 | |
3968 | |
3969 | |
3970 | |
3971 | |
3972 | |
3973 | |
3974 | bool AllowExplicitConv = AllowExplicit && !CopyInitializing && |
3975 | Args.size() == 1 && |
3976 | hasCopyOrMoveCtorParam(S.Context, Info); |
3977 | S.AddOverloadCandidate(Info.Constructor, Info.FoundDecl, Args, |
3978 | CandidateSet, SuppressUserConversions, |
3979 | false, AllowExplicit, |
3980 | AllowExplicitConv); |
3981 | } |
3982 | } |
3983 | |
3984 | |
3985 | |
3986 | |
3987 | |
3988 | |
3989 | |
3990 | |
3991 | |
3992 | |
3993 | |
3994 | |
3995 | if (S.getLangOpts().CPlusPlus17 && Args.size() == 1 && |
3996 | !SecondStepOfCopyInit) { |
3997 | Expr *Initializer = Args[0]; |
3998 | auto *SourceRD = Initializer->getType()->getAsCXXRecordDecl(); |
3999 | if (SourceRD && S.isCompleteType(DeclLoc, Initializer->getType())) { |
4000 | const auto &Conversions = SourceRD->getVisibleConversionFunctions(); |
4001 | for (auto I = Conversions.begin(), E = Conversions.end(); I != E; ++I) { |
4002 | NamedDecl *D = *I; |
4003 | CXXRecordDecl *ActingDC = cast<CXXRecordDecl>(D->getDeclContext()); |
4004 | D = D->getUnderlyingDecl(); |
4005 | |
4006 | FunctionTemplateDecl *ConvTemplate = dyn_cast<FunctionTemplateDecl>(D); |
4007 | CXXConversionDecl *Conv; |
4008 | if (ConvTemplate) |
4009 | Conv = cast<CXXConversionDecl>(ConvTemplate->getTemplatedDecl()); |
4010 | else |
4011 | Conv = cast<CXXConversionDecl>(D); |
4012 | |
4013 | if (ConvTemplate) |
4014 | S.AddTemplateConversionCandidate( |
4015 | ConvTemplate, I.getPair(), ActingDC, Initializer, DestType, |
4016 | CandidateSet, AllowExplicit, AllowExplicit, |
4017 | false); |
4018 | else |
4019 | S.AddConversionCandidate(Conv, I.getPair(), ActingDC, Initializer, |
4020 | DestType, CandidateSet, AllowExplicit, |
4021 | AllowExplicit, |
4022 | false); |
4023 | } |
4024 | } |
4025 | } |
4026 | |
4027 | |
4028 | return CandidateSet.BestViableFunction(S, DeclLoc, Best); |
4029 | } |
4030 | |
4031 | |
4032 | |
4033 | |
4034 | |
4035 | |
4036 | |
4037 | |
4038 | |
4039 | |
4040 | |
4041 | static void TryConstructorInitialization(Sema &S, |
4042 | const InitializedEntity &Entity, |
4043 | const InitializationKind &Kind, |
4044 | MultiExprArg Args, QualType DestType, |
4045 | QualType DestArrayType, |
4046 | InitializationSequence &Sequence, |
4047 | bool IsListInit = false, |
4048 | bool IsInitListCopy = false) { |
4049 | assert(((!IsListInit && !IsInitListCopy) || |
4050 | (Args.size() == 1 && isa<InitListExpr>(Args[0]))) && |
4051 | "IsListInit/IsInitListCopy must come with a single initializer list " |
4052 | "argument."); |
4053 | InitListExpr *ILE = |
4054 | (IsListInit || IsInitListCopy) ? cast<InitListExpr>(Args[0]) : nullptr; |
4055 | MultiExprArg UnwrappedArgs = |
4056 | ILE ? MultiExprArg(ILE->getInits(), ILE->getNumInits()) : Args; |
4057 | |
4058 | |
4059 | if (!S.isCompleteType(Kind.getLocation(), DestType)) { |
4060 | Sequence.setIncompleteTypeFailure(DestType); |
4061 | return; |
4062 | } |
4063 | |
4064 | |
4065 | |
4066 | |
4067 | |
4068 | |
4069 | |
4070 | |
4071 | |
4072 | |
4073 | if (S.getLangOpts().CPlusPlus17 && |
4074 | Entity.getKind() != InitializedEntity::EK_Base && |
4075 | Entity.getKind() != InitializedEntity::EK_Delegating && |
4076 | Entity.getKind() != |
4077 | InitializedEntity::EK_LambdaToBlockConversionBlockElement && |
4078 | UnwrappedArgs.size() == 1 && UnwrappedArgs[0]->isPRValue() && |
4079 | S.Context.hasSameUnqualifiedType(UnwrappedArgs[0]->getType(), DestType)) { |
4080 | |
4081 | Sequence.AddQualificationConversionStep(DestType, VK_PRValue); |
4082 | if (ILE) |
4083 | Sequence.RewrapReferenceInitList(DestType, ILE); |
4084 | return; |
4085 | } |
4086 | |
4087 | const RecordType *DestRecordType = DestType->getAs<RecordType>(); |
4088 | assert(DestRecordType && "Constructor initialization requires record type"); |
4089 | CXXRecordDecl *DestRecordDecl |
4090 | = cast<CXXRecordDecl>(DestRecordType->getDecl()); |
4091 | |
4092 | |
4093 | |
4094 | OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); |
4095 | |
4096 | |
4097 | |
4098 | bool AllowExplicit = Kind.AllowExplicit() || IsListInit; |
4099 | bool CopyInitialization = Kind.getKind() == InitializationKind::IK_Copy; |
4100 | |
4101 | |
4102 | |
4103 | |
4104 | DeclContext::lookup_result Ctors = S.LookupConstructors(DestRecordDecl); |
4105 | |
4106 | OverloadingResult Result = OR_No_Viable_Function; |
4107 | OverloadCandidateSet::iterator Best; |
4108 | bool AsInitializerList = false; |
4109 | |
4110 | |
4111 | |
4112 | |
4113 | |
4114 | |
4115 | |
4116 | |
4117 | |
4118 | |
4119 | if (IsListInit) { |
4120 | AsInitializerList = true; |
4121 | |
4122 | |
4123 | |
4124 | if (!(UnwrappedArgs.empty() && S.LookupDefaultConstructor(DestRecordDecl))) |
4125 | Result = ResolveConstructorOverload(S, Kind.getLocation(), Args, |
4126 | CandidateSet, DestType, Ctors, Best, |
4127 | CopyInitialization, AllowExplicit, |
4128 | true, |
4129 | IsListInit); |
4130 | } |
4131 | |
4132 | |
4133 | |
4134 | |
4135 | |
4136 | |
4137 | if (Result == OR_No_Viable_Function) { |
4138 | AsInitializerList = false; |
4139 | Result = ResolveConstructorOverload(S, Kind.getLocation(), UnwrappedArgs, |
4140 | CandidateSet, DestType, Ctors, Best, |
4141 | CopyInitialization, AllowExplicit, |
4142 | false, |
4143 | IsListInit); |
4144 | } |
4145 | if (Result) { |
4146 | Sequence.SetOverloadFailure( |
4147 | IsListInit ? InitializationSequence::FK_ListConstructorOverloadFailed |
4148 | : InitializationSequence::FK_ConstructorOverloadFailed, |
4149 | Result); |
4150 | |
4151 | if (Result != OR_Deleted) |
4152 | return; |
4153 | } |
4154 | |
4155 | bool HadMultipleCandidates = (CandidateSet.size() > 1); |
4156 | |
4157 | |
4158 | |
4159 | if (auto *CD = dyn_cast<CXXConversionDecl>(Best->Function)) { |
4160 | |
4161 | QualType ConvType = CD->getConversionType(); |
4162 | assert(S.Context.hasSameUnqualifiedType(ConvType, DestType) && |
4163 | "should not have selected this conversion function"); |
4164 | Sequence.AddUserConversionStep(CD, Best->FoundDecl, ConvType, |
4165 | HadMultipleCandidates); |
4166 | if (!S.Context.hasSameType(ConvType, DestType)) |
4167 | Sequence.AddQualificationConversionStep(DestType, VK_PRValue); |
4168 | if (IsListInit) |
4169 | Sequence.RewrapReferenceInitList(Entity.getType(), ILE); |
4170 | return; |
4171 | } |
4172 | |
4173 | CXXConstructorDecl *CtorDecl = cast<CXXConstructorDecl>(Best->Function); |
4174 | if (Result != OR_Deleted) { |
4175 | |
4176 | |
4177 | |
4178 | |
4179 | |
4180 | |
4181 | |
4182 | |
4183 | |
4184 | if (Kind.getKind() == InitializationKind::IK_Default && |
4185 | Entity.getType().isConstQualified()) { |
4186 | if (!CtorDecl->getParent()->allowConstDefaultInit()) { |
4187 | if (!maybeRecoverWithZeroInitialization(S, Sequence, Entity)) |
4188 | Sequence.SetFailed(InitializationSequence::FK_DefaultInitOfConst); |
4189 | return; |
4190 | } |
4191 | } |
4192 | |
4193 | |
4194 | |
4195 | |
4196 | if (IsListInit && !Kind.AllowExplicit() && CtorDecl->isExplicit()) { |
4197 | Sequence.SetFailed(InitializationSequence::FK_ExplicitConstructor); |
4198 | return; |
4199 | } |
4200 | } |
4201 | |
4202 | |
4203 | |
4204 | |
4205 | |
4206 | |
4207 | |
4208 | |
4209 | |
4210 | if (Result == OR_Deleted && Kind.getKind() != InitializationKind::IK_Copy) |
4211 | return; |
4212 | |
4213 | |
4214 | |
4215 | Sequence.AddConstructorInitializationStep( |
4216 | Best->FoundDecl, CtorDecl, DestArrayType, HadMultipleCandidates, |
4217 | IsListInit | IsInitListCopy, AsInitializerList); |
4218 | } |
4219 | |
4220 | static bool |
4221 | ResolveOverloadedFunctionForReferenceBinding(Sema &S, |
4222 | Expr *Initializer, |
4223 | QualType &SourceType, |
4224 | QualType &UnqualifiedSourceType, |
4225 | QualType UnqualifiedTargetType, |
4226 | InitializationSequence &Sequence) { |
4227 | if (S.Context.getCanonicalType(UnqualifiedSourceType) == |
4228 | S.Context.OverloadTy) { |
4229 | DeclAccessPair Found; |
4230 | bool HadMultipleCandidates = false; |
4231 | if (FunctionDecl *Fn |
4232 | = S.ResolveAddressOfOverloadedFunction(Initializer, |
4233 | UnqualifiedTargetType, |
4234 | false, Found, |
4235 | &HadMultipleCandidates)) { |
4236 | Sequence.AddAddressOverloadResolutionStep(Fn, Found, |
4237 | HadMultipleCandidates); |
4238 | SourceType = Fn->getType(); |
4239 | UnqualifiedSourceType = SourceType.getUnqualifiedType(); |
4240 | } else if (!UnqualifiedTargetType->isRecordType()) { |
4241 | Sequence.SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); |
4242 | return true; |
4243 | } |
4244 | } |
4245 | return false; |
4246 | } |
4247 | |
4248 | static void TryReferenceInitializationCore(Sema &S, |
4249 | const InitializedEntity &Entity, |
4250 | const InitializationKind &Kind, |
4251 | Expr *Initializer, |
4252 | QualType cv1T1, QualType T1, |
4253 | Qualifiers T1Quals, |
4254 | QualType cv2T2, QualType T2, |
4255 | Qualifiers T2Quals, |
4256 | InitializationSequence &Sequence); |
4257 | |
4258 | static void TryValueInitialization(Sema &S, |
4259 | const InitializedEntity &Entity, |
4260 | const InitializationKind &Kind, |
4261 | InitializationSequence &Sequence, |
4262 | InitListExpr *InitList = nullptr); |
4263 | |
4264 | |
4265 | static void TryReferenceListInitialization(Sema &S, |
4266 | const InitializedEntity &Entity, |
4267 | const InitializationKind &Kind, |
4268 | InitListExpr *InitList, |
4269 | InitializationSequence &Sequence, |
4270 | bool TreatUnavailableAsInvalid) { |
4271 | |
4272 | if (!S.getLangOpts().CPlusPlus11) { |
4273 | Sequence.SetFailed(InitializationSequence::FK_ReferenceBindingToInitList); |
4274 | return; |
4275 | } |
4276 | |
4277 | if (Entity.getKind() == InitializedEntity::EK_CompoundLiteralInit) { |
4278 | Sequence.SetFailed(InitializationSequence::FK_ReferenceBindingToInitList); |
4279 | return; |
4280 | } |
4281 | |
4282 | QualType DestType = Entity.getType(); |
4283 | QualType cv1T1 = DestType->castAs<ReferenceType>()->getPointeeType(); |
4284 | Qualifiers T1Quals; |
4285 | QualType T1 = S.Context.getUnqualifiedArrayType(cv1T1, T1Quals); |
4286 | |
4287 | |
4288 | |
4289 | |
4290 | |
4291 | |
4292 | |
4293 | if (InitList->getNumInits() == 1) { |
4294 | Expr *Initializer = InitList->getInit(0); |
4295 | QualType cv2T2 = S.getCompletedType(Initializer); |
4296 | Qualifiers T2Quals; |
4297 | QualType T2 = S.Context.getUnqualifiedArrayType(cv2T2, T2Quals); |
4298 | |
4299 | |
4300 | if (ResolveOverloadedFunctionForReferenceBinding(S, Initializer, cv2T2, T2, |
4301 | T1, Sequence)) |
4302 | return; |
4303 | |
4304 | SourceLocation DeclLoc = Initializer->getBeginLoc(); |
4305 | Sema::ReferenceCompareResult RefRelationship |
4306 | = S.CompareReferenceRelationship(DeclLoc, cv1T1, cv2T2); |
4307 | if (RefRelationship >= Sema::Ref_Related) { |
4308 | |
4309 | TryReferenceInitializationCore(S, Entity, Kind, Initializer, cv1T1, T1, |
4310 | T1Quals, cv2T2, T2, T2Quals, Sequence); |
4311 | if (Sequence) |
4312 | Sequence.RewrapReferenceInitList(cv1T1, InitList); |
4313 | return; |
4314 | } |
4315 | |
4316 | |
4317 | if (Sequence.step_begin() != Sequence.step_end()) |
4318 | Sequence.RewrapReferenceInitList(cv1T1, InitList); |
4319 | } |
4320 | |
4321 | QualType cv1T1IgnoreAS = cv1T1; |
4322 | if (T1Quals.hasAddressSpace()) { |
4323 | Qualifiers T2Quals; |
4324 | (void)S.Context.getUnqualifiedArrayType(InitList->getType(), T2Quals); |
4325 | if (!T1Quals.isAddressSpaceSupersetOf(T2Quals)) { |
4326 | Sequence.SetFailed( |
4327 | InitializationSequence::FK_ReferenceInitDropsQualifiers); |
4328 | return; |
4329 | } |
4330 | |
4331 | |
4332 | cv1T1IgnoreAS = |
4333 | S.Context.getQualifiedType(T1, T1Quals.withoutAddressSpace()); |
4334 | } |
4335 | |
4336 | InitializedEntity TempEntity = |
4337 | InitializedEntity::InitializeTemporary(cv1T1IgnoreAS); |
4338 | |
4339 | TryListInitialization(S, TempEntity, Kind, InitList, Sequence, |
4340 | TreatUnavailableAsInvalid); |
4341 | if (Sequence) { |
4342 | if (DestType->isRValueReferenceType() || |
4343 | (T1Quals.hasConst() && !T1Quals.hasVolatile())) { |
4344 | Sequence.AddReferenceBindingStep(cv1T1IgnoreAS, |
4345 | true); |
4346 | if (T1Quals.hasAddressSpace()) |
4347 | Sequence.AddQualificationConversionStep( |
4348 | cv1T1, DestType->isRValueReferenceType() ? VK_XValue : VK_LValue); |
4349 | } else |
4350 | Sequence.SetFailed( |
4351 | InitializationSequence::FK_NonConstLValueReferenceBindingToTemporary); |
4352 | } |
4353 | } |
4354 | |
4355 | |
4356 | static void TryListInitialization(Sema &S, |
4357 | const InitializedEntity &Entity, |
4358 | const InitializationKind &Kind, |
4359 | InitListExpr *InitList, |
4360 | InitializationSequence &Sequence, |
4361 | bool TreatUnavailableAsInvalid) { |
4362 | QualType DestType = Entity.getType(); |
4363 | |
4364 | |
4365 | |
4366 | if (S.getLangOpts().CPlusPlus && DestType->isScalarType() && |
4367 | !DestType->isAnyComplexType() && InitList->getNumInits() > 1) { |
4368 | Sequence.SetFailed(InitializationSequence::FK_TooManyInitsForScalar); |
4369 | return; |
4370 | } |
4371 | if (DestType->isReferenceType()) { |
4372 | TryReferenceListInitialization(S, Entity, Kind, InitList, Sequence, |
4373 | TreatUnavailableAsInvalid); |
4374 | return; |
4375 | } |
4376 | |
4377 | if (DestType->isRecordType() && |
4378 | !S.isCompleteType(InitList->getBeginLoc(), DestType)) { |
4379 | Sequence.setIncompleteTypeFailure(DestType); |
4380 | return; |
4381 | } |
4382 | |
4383 | |
4384 | |
4385 | |
4386 | |
4387 | |
4388 | |
4389 | |
4390 | |
4391 | |
4392 | |
4393 | |
4394 | if (S.getLangOpts().CPlusPlus11 && InitList->getNumInits() == 1) { |
4395 | if (DestType->isRecordType()) { |
4396 | QualType InitType = InitList->getInit(0)->getType(); |
4397 | if (S.Context.hasSameUnqualifiedType(InitType, DestType) || |
4398 | S.IsDerivedFrom(InitList->getBeginLoc(), InitType, DestType)) { |
4399 | Expr *InitListAsExpr = InitList; |
4400 | TryConstructorInitialization(S, Entity, Kind, InitListAsExpr, DestType, |
4401 | DestType, Sequence, |
4402 | false, |
4403 | true); |
4404 | return; |
4405 | } |
4406 | } |
4407 | if (const ArrayType *DestAT = S.Context.getAsArrayType(DestType)) { |
4408 | Expr *SubInit[1] = {InitList->getInit(0)}; |
4409 | if (!isa<VariableArrayType>(DestAT) && |
4410 | IsStringInit(SubInit[0], DestAT, S.Context) == SIF_None) { |
4411 | InitializationKind SubKind = |
4412 | Kind.getKind() == InitializationKind::IK_DirectList |
4413 | ? InitializationKind::CreateDirect(Kind.getLocation(), |
4414 | InitList->getLBraceLoc(), |
4415 | InitList->getRBraceLoc()) |
4416 | : Kind; |
4417 | Sequence.InitializeFrom(S, Entity, SubKind, SubInit, |
4418 | true, |
4419 | TreatUnavailableAsInvalid); |
4420 | |
4421 | |
4422 | |
4423 | |
4424 | if (Sequence) { |
4425 | Sequence.RewrapReferenceInitList(Entity.getType(), InitList); |
4426 | return; |
4427 | } |
4428 | } |
4429 | } |
4430 | } |
4431 | |
4432 | |
4433 | |
4434 | if ((DestType->isRecordType() && !DestType->isAggregateType()) || |
4435 | (S.getLangOpts().CPlusPlus11 && |
4436 | S.isStdInitializerList(DestType, nullptr))) { |
4437 | if (S.getLangOpts().CPlusPlus11) { |
4438 | |
4439 | |
4440 | |
4441 | if (InitList->getNumInits() == 0) { |
4442 | CXXRecordDecl *RD = DestType->getAsCXXRecordDecl(); |
4443 | if (S.LookupDefaultConstructor(RD)) { |
4444 | TryValueInitialization(S, Entity, Kind, Sequence, InitList); |
4445 | return; |
4446 | } |
4447 | } |
4448 | |
4449 | |
4450 | |
4451 | if (TryInitializerListConstruction(S, InitList, DestType, Sequence, |
4452 | TreatUnavailableAsInvalid)) |
4453 | return; |
4454 | |
4455 | |
4456 | Expr *InitListAsExpr = InitList; |
4457 | TryConstructorInitialization(S, Entity, Kind, InitListAsExpr, DestType, |
4458 | DestType, Sequence, true); |
4459 | } else |
4460 | Sequence.SetFailed(InitializationSequence::FK_InitListBadDestinationType); |
4461 | return; |
4462 | } |
4463 | |
4464 | if (S.getLangOpts().CPlusPlus && !DestType->isAggregateType() && |
4465 | InitList->getNumInits() == 1) { |
4466 | Expr *E = InitList->getInit(0); |
4467 | |
4468 | |
4469 | |
4470 | |
4471 | |
4472 | |
4473 | auto *ET = DestType->getAs<EnumType>(); |
4474 | if (S.getLangOpts().CPlusPlus17 && |
4475 | Kind.getKind() == InitializationKind::IK_DirectList && |
4476 | ET && ET->getDecl()->isFixed() && |
4477 | !S.Context.hasSameUnqualifiedType(E->getType(), DestType) && |
4478 | (E->getType()->isIntegralOrEnumerationType() || |
4479 | E->getType()->isFloatingType())) { |
4480 | |
4481 | |
4482 | |
4483 | |
4484 | |
4485 | |
4486 | |
4487 | |
4488 | ImplicitConversionSequence ICS; |
4489 | ICS.setStandard(); |
4490 | ICS.Standard.setAsIdentityConversion(); |
4491 | if (!E->isPRValue()) |
4492 | ICS.Standard.First = ICK_Lvalue_To_Rvalue; |
4493 | |
4494 | |
4495 | |
4496 | ICS.Standard.Second = E->getType()->isFloatingType() |
4497 | ? ICK_Floating_Integral |
4498 | : ICK_Integral_Conversion; |
4499 | ICS.Standard.setFromType(E->getType()); |
4500 | ICS.Standard.setToType(0, E->getType()); |
4501 | ICS.Standard.setToType(1, DestType); |
4502 | ICS.Standard.setToType(2, DestType); |
4503 | Sequence.AddConversionSequenceStep(ICS, ICS.Standard.getToType(2), |
4504 | true); |
4505 | Sequence.RewrapReferenceInitList(Entity.getType(), InitList); |
4506 | return; |
4507 | } |
4508 | |
4509 | |
4510 | |
4511 | |
4512 | |
4513 | |
4514 | |
4515 | |
4516 | |
4517 | |
4518 | |
4519 | |
4520 | |
4521 | |
4522 | |
4523 | |
4524 | Expr *Init = InitList->getInit(0); |
4525 | if (Init->getType()->isRecordType() || |
4526 | (Init->getType()->isNullPtrType() && DestType->isBooleanType())) { |
4527 | InitializationKind SubKind = |
4528 | Kind.getKind() == InitializationKind::IK_DirectList |
4529 | ? InitializationKind::CreateDirect(Kind.getLocation(), |
4530 | InitList->getLBraceLoc(), |
4531 | InitList->getRBraceLoc()) |
4532 | : Kind; |
4533 | Expr *SubInit[1] = { Init }; |
4534 | Sequence.InitializeFrom(S, Entity, SubKind, SubInit, |
4535 | true, |
4536 | TreatUnavailableAsInvalid); |
4537 | if (Sequence) |
4538 | Sequence.RewrapReferenceInitList(Entity.getType(), InitList); |
4539 | return; |
4540 | } |
4541 | } |
4542 | |
4543 | InitListChecker CheckInitList(S, Entity, InitList, |
4544 | DestType, true, TreatUnavailableAsInvalid); |
4545 | if (CheckInitList.HadError()) { |
4546 | Sequence.SetFailed(InitializationSequence::FK_ListInitializationFailed); |
4547 | return; |
4548 | } |
4549 | |
4550 | |
4551 | Sequence.AddListInitializationStep(DestType); |
4552 | } |
4553 | |
4554 | |
4555 | |
4556 | static OverloadingResult TryRefInitWithConversionFunction( |
4557 | Sema &S, const InitializedEntity &Entity, const InitializationKind &Kind, |
4558 | Expr *Initializer, bool AllowRValues, bool IsLValueRef, |
4559 | InitializationSequence &Sequence) { |
4560 | QualType DestType = Entity.getType(); |
4561 | QualType cv1T1 = DestType->castAs<ReferenceType>()->getPointeeType(); |
4562 | QualType T1 = cv1T1.getUnqualifiedType(); |
4563 | QualType cv2T2 = Initializer->getType(); |
4564 | QualType T2 = cv2T2.getUnqualifiedType(); |
4565 | |
4566 | assert(!S.CompareReferenceRelationship(Initializer->getBeginLoc(), T1, T2) && |
4567 | "Must have incompatible references when binding via conversion"); |
4568 | |
4569 | |
4570 | |
4571 | OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); |
4572 | CandidateSet.clear(OverloadCandidateSet::CSK_InitByUserDefinedConversion); |
4573 | |
4574 | |
4575 | |
4576 | |
4577 | |
4578 | bool AllowExplicitCtors = false; |
4579 | bool AllowExplicitConvs = Kind.allowExplicitConversionFunctionsInRefBinding(); |
4580 | |
4581 | const RecordType *T1RecordType = nullptr; |
4582 | if (AllowRValues && (T1RecordType = T1->getAs<RecordType>()) && |
4583 | S.isCompleteType(Kind.getLocation(), T1)) { |
4584 | |
4585 | |
4586 | CXXRecordDecl *T1RecordDecl = cast<CXXRecordDecl>(T1RecordType->getDecl()); |
4587 | |
4588 | for (NamedDecl *D : S.LookupConstructors(T1RecordDecl)) { |
4589 | auto Info = getConstructorInfo(D); |
4590 | if (!Info.Constructor) |
4591 | continue; |
4592 | |
4593 | if (!Info.Constructor->isInvalidDecl() && |
4594 | Info.Constructor->isConvertingConstructor(true)) { |
4595 | if (Info.ConstructorTmpl) |
4596 | S.AddTemplateOverloadCandidate( |
4597 | Info.ConstructorTmpl, Info.FoundDecl, |
4598 | nullptr, Initializer, CandidateSet, |
4599 | true, |
4600 | false, AllowExplicitCtors); |
4601 | else |
4602 | S.AddOverloadCandidate( |
4603 | Info.Constructor, Info.FoundDecl, Initializer, CandidateSet, |
4604 | true, |
4605 | false, AllowExplicitCtors); |
4606 | } |
4607 | } |
4608 | } |
4609 | if (T1RecordType && T1RecordType->getDecl()->isInvalidDecl()) |
4610 | return OR_No_Viable_Function; |
4611 | |
4612 | const RecordType *T2RecordType = nullptr; |
4613 | if ((T2RecordType = T2->getAs<RecordType>()) && |
4614 | S.isCompleteType(Kind.getLocation(), T2)) { |
4615 | |
4616 | |
4617 | CXXRecordDecl *T2RecordDecl = cast<CXXRecordDecl>(T2RecordType->getDecl()); |
4618 | |
4619 | const auto &Conversions = T2RecordDecl->getVisibleConversionFunctions(); |
4620 | for (auto I = Conversions.begin(), E = Conversions.end(); I != E; ++I) { |
4621 | NamedDecl *D = *I; |
4622 | CXXRecordDecl *ActingDC = cast<CXXRecordDecl>(D->getDeclContext()); |
4623 | if (isa<UsingShadowDecl>(D)) |
4624 | D = cast<UsingShadowDecl>(D)->getTargetDecl(); |
4625 | |
4626 | FunctionTemplateDecl *ConvTemplate = dyn_cast<FunctionTemplateDecl>(D); |
4627 | CXXConversionDecl *Conv; |
4628 | if (ConvTemplate) |
4629 | Conv = cast<CXXConversionDecl>(ConvTemplate->getTemplatedDecl()); |
4630 | else |
4631 | Conv = cast<CXXConversionDecl>(D); |
4632 | |
4633 | |
4634 | |
4635 | |
4636 | |
4637 | |
4638 | |
4639 | if ((AllowRValues || |
4640 | Conv->getConversionType()->isLValueReferenceType())) { |
4641 | if (ConvTemplate) |
4642 | S.AddTemplateConversionCandidate( |
4643 | ConvTemplate, I.getPair(), ActingDC, Initializer, DestType, |
4644 | CandidateSet, |
4645 | false, AllowExplicitConvs); |
4646 | else |
4647 | S.AddConversionCandidate( |
4648 | Conv, I.getPair(), ActingDC, Initializer, DestType, CandidateSet, |
4649 | false, AllowExplicitConvs); |
4650 | } |
4651 | } |
4652 | } |
4653 | if (T2RecordType && T2RecordType->getDecl()->isInvalidDecl()) |
4654 | return OR_No_Viable_Function; |
4655 | |
4656 | SourceLocation DeclLoc = Initializer->getBeginLoc(); |
4657 | |
4658 | |
4659 | OverloadCandidateSet::iterator Best; |
4660 | if (OverloadingResult Result |
4661 | = CandidateSet.BestViableFunction(S, DeclLoc, Best)) |
4662 | return Result; |
4663 | |
4664 | FunctionDecl *Function = Best->Function; |
4665 | |
4666 | |
4667 | Function->setReferenced(); |
4668 | |
4669 | |
4670 | QualType cv3T3; |
4671 | if (isa<CXXConversionDecl>(Function)) |
4672 | cv3T3 = Function->getReturnType(); |
4673 | else |
4674 | cv3T3 = T1; |
4675 | |
4676 | ExprValueKind VK = VK_PRValue; |
4677 | if (cv3T3->isLValueReferenceType()) |
4678 | VK = VK_LValue; |
4679 | else if (const auto *RRef = cv3T3->getAs<RValueReferenceType>()) |
4680 | VK = RRef->getPointeeType()->isFunctionType() ? VK_LValue : VK_XValue; |
4681 | cv3T3 = cv3T3.getNonLValueExprType(S.Context); |
4682 | |
4683 | |
4684 | bool HadMultipleCandidates = (CandidateSet.size() > 1); |
4685 | Sequence.AddUserConversionStep(Function, Best->FoundDecl, cv3T3, |
4686 | HadMultipleCandidates); |
4687 | |
4688 | |
4689 | |
4690 | Sema::ReferenceConversions RefConv; |
4691 | Sema::ReferenceCompareResult NewRefRelationship = |
4692 | S.CompareReferenceRelationship(DeclLoc, T1, cv3T3, &RefConv); |
4693 | |
4694 | |
4695 | if (NewRefRelationship == Sema::Ref_Incompatible) { |
4696 | assert(!isa<CXXConstructorDecl>(Function) && |
4697 | "should not have conversion after constructor"); |
4698 | |
4699 | ImplicitConversionSequence ICS; |
4700 | ICS.setStandard(); |
4701 | ICS.Standard = Best->FinalConversion; |
4702 | Sequence.AddConversionSequenceStep(ICS, ICS.Standard.getToType(2)); |
4703 | |
4704 | |
4705 | |
4706 | cv3T3 = ICS.Standard.getToType(2); |
4707 | VK = VK_PRValue; |
4708 | } |
4709 | |
4710 | |
4711 | |
4712 | |
4713 | |
4714 | |
4715 | |
4716 | QualType cv1T4 = S.Context.getQualifiedType(cv3T3, cv1T1.getQualifiers()); |
4717 | if (cv1T4.getQualifiers() != cv3T3.getQualifiers()) |
4718 | Sequence.AddQualificationConversionStep(cv1T4, VK); |
4719 | Sequence.AddReferenceBindingStep(cv1T4, VK == VK_PRValue); |
4720 | VK = IsLValueRef ? VK_LValue : VK_XValue; |
4721 | |
4722 | if (RefConv & Sema::ReferenceConversions::DerivedToBase) |
4723 | Sequence.AddDerivedToBaseCastStep(cv1T1, VK); |
4724 | else if (RefConv & Sema::ReferenceConversions::ObjC) |
4725 | Sequence.AddObjCObjectConversionStep(cv1T1); |
4726 | else if (RefConv & Sema::ReferenceConversions::Function) |
4727 | Sequence.AddFunctionReferenceConversionStep(cv1T1); |
4728 | else if (RefConv & Sema::ReferenceConversions::Qualification) { |
4729 | if (!S.Context.hasSameType(cv1T4, cv1T1)) |
4730 | Sequence.AddQualificationConversionStep(cv1T1, VK); |
4731 | } |
4732 | |
4733 | return OR_Success; |
4734 | } |
4735 | |
4736 | static void CheckCXX98CompatAccessibleCopy(Sema &S, |
4737 | const InitializedEntity &Entity, |
4738 | Expr *CurInitExpr); |
4739 | |
4740 | |
4741 | static void TryReferenceInitialization(Sema &S, |
4742 | const InitializedEntity &Entity, |
4743 | const InitializationKind &Kind, |
4744 | Expr *Initializer, |
4745 | InitializationSequence &Sequence) { |
4746 | QualType DestType = Entity.getType(); |
4747 | QualType cv1T1 = DestType->castAs<ReferenceType>()->getPointeeType(); |
4748 | Qualifiers T1Quals; |
4749 | QualType T1 = S.Context.getUnqualifiedArrayType(cv1T1, T1Quals); |
4750 | QualType cv2T2 = S.getCompletedType(Initializer); |
4751 | Qualifiers T2Quals; |
4752 | QualType T2 = S.Context.getUnqualifiedArrayType(cv2T2, T2Quals); |
4753 | |
4754 | |
4755 | |
4756 | |
4757 | if (ResolveOverloadedFunctionForReferenceBinding(S, Initializer, cv2T2, T2, |
4758 | T1, Sequence)) |
4759 | return; |
4760 | |
4761 | |
4762 | TryReferenceInitializationCore(S, Entity, Kind, Initializer, cv1T1, T1, |
4763 | T1Quals, cv2T2, T2, T2Quals, Sequence); |
4764 | } |
4765 | |
4766 | |
4767 | |
4768 | |
4769 | static bool isNonReferenceableGLValue(Expr *E) { |
4770 | return E->refersToBitField() || E->refersToVectorElement() || |
4771 | E->refersToMatrixElement(); |
4772 | } |
4773 | |
4774 | |
4775 | |
4776 | |
4777 | |
4778 | static void TryReferenceInitializationCore(Sema &S, |
4779 | const InitializedEntity &Entity, |
4780 | const InitializationKind &Kind, |
4781 | Expr *Initializer, |
4782 | QualType cv1T1, QualType T1, |
4783 | Qualifiers T1Quals, |
4784 | QualType cv2T2, QualType T2, |
4785 | Qualifiers T2Quals, |
4786 | InitializationSequence &Sequence) { |
4787 | QualType DestType = Entity.getType(); |
4788 | SourceLocation DeclLoc = Initializer->getBeginLoc(); |
4789 | |
4790 | |
4791 | bool isLValueRef = DestType->isLValueReferenceType(); |
4792 | bool isRValueRef = !isLValueRef; |
4793 | Expr::Classification InitCategory = Initializer->Classify(S.Context); |
4794 | |
4795 | Sema::ReferenceConversions RefConv; |
4796 | Sema::ReferenceCompareResult RefRelationship = |
4797 | S.CompareReferenceRelationship(DeclLoc, cv1T1, cv2T2, &RefConv); |
4798 | |
4799 | |
4800 | |
4801 | |
4802 | |
4803 | |
4804 | |
4805 | |
4806 | |
4807 | |
4808 | OverloadingResult ConvOvlResult = OR_Success; |
4809 | bool T1Function = T1->isFunctionType(); |
4810 | if (isLValueRef || T1Function) { |
4811 | if (InitCategory.isLValue() && !isNonReferenceableGLValue(Initializer) && |
4812 | (RefRelationship == Sema::Ref_Compatible || |
4813 | (Kind.isCStyleOrFunctionalCast() && |
4814 | RefRelationship == Sema::Ref_Related))) { |
4815 | |
4816 | |
4817 | if (RefConv & (Sema::ReferenceConversions::DerivedToBase | |
4818 | Sema::ReferenceConversions::ObjC)) { |
4819 | |
4820 | |
4821 | if (RefConv & (Sema::ReferenceConversions::Qualification)) |
4822 | Sequence.AddQualificationConversionStep( |
4823 | S.Context.getQualifiedType(T2, T1Quals), |
4824 | Initializer->getValueKind()); |
4825 | if (RefConv & Sema::ReferenceConversions::DerivedToBase) |
4826 | Sequence.AddDerivedToBaseCastStep(cv1T1, VK_LValue); |
4827 | else |
4828 | Sequence.AddObjCObjectConversionStep(cv1T1); |
4829 | } else if (RefConv & Sema::ReferenceConversions::Qualification) { |
4830 | |
4831 | Sequence.AddQualificationConversionStep(cv1T1, |
4832 | Initializer->getValueKind()); |
4833 | } else if (RefConv & Sema::ReferenceConversions::Function) { |
4834 | Sequence.AddFunctionReferenceConversionStep(cv1T1); |
4835 | } |
4836 | |
4837 | |
4838 | |
4839 | |
4840 | Sequence.AddReferenceBindingStep(cv1T1, false); |
4841 | return; |
4842 | } |
4843 | |
4844 | |
4845 | |
4846 | |
4847 | |
4848 | |
4849 | |
4850 | |
4851 | |
4852 | if (RefRelationship == Sema::Ref_Incompatible && T2->isRecordType() && |
4853 | (isLValueRef || InitCategory.isRValue())) { |
4854 | if (S.getLangOpts().CPlusPlus) { |
4855 | |
4856 | ConvOvlResult = TryRefInitWithConversionFunction( |
4857 | S, Entity, Kind, Initializer, isRValueRef, |
4858 | isLValueRef, Sequence); |
4859 | if (ConvOvlResult == OR_Success) |
4860 | return; |
4861 | if (ConvOvlResult != OR_No_Viable_Function) |
4862 | Sequence.SetOverloadFailure( |
4863 | InitializationSequence::FK_ReferenceInitOverloadFailed, |
4864 | ConvOvlResult); |
4865 | } else { |
4866 | ConvOvlResult = OR_No_Viable_Function; |
4867 | } |
4868 | } |
4869 | } |
4870 | |
4871 | |
4872 | |
4873 | |
4874 | |
4875 | |
4876 | if (isLValueRef && !(T1Quals.hasConst() && !T1Quals.hasVolatile() && |
4877 | T1Quals.isAddressSpaceSupersetOf(T2Quals))) { |
4878 | if (S.Context.getCanonicalType(T2) == S.Context.OverloadTy) |
4879 | Sequence.SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); |
4880 | else if (ConvOvlResult && !Sequence.getFailedCandidateSet().empty()) |
4881 | Sequence.SetOverloadFailure( |
4882 | InitializationSequence::FK_ReferenceInitOverloadFailed, |
4883 | ConvOvlResult); |
4884 | else if (!InitCategory.isLValue()) |
4885 | Sequence.SetFailed( |
4886 | T1Quals.isAddressSpaceSupersetOf(T2Quals) |
4887 | ? InitializationSequence:: |
4888 | FK_NonConstLValueReferenceBindingToTemporary |
4889 | : InitializationSequence::FK_ReferenceInitDropsQualifiers); |
4890 | else { |
4891 | InitializationSequence::FailureKind FK; |
4892 | switch (RefRelationship) { |
4893 | case Sema::Ref_Compatible: |
4894 | if (Initializer->refersToBitField()) |
4895 | FK = InitializationSequence:: |
4896 | FK_NonConstLValueReferenceBindingToBitfield; |
4897 | else if (Initializer->refersToVectorElement()) |
4898 | FK = InitializationSequence:: |
4899 | FK_NonConstLValueReferenceBindingToVectorElement; |
4900 | else if (Initializer->refersToMatrixElement()) |
4901 | FK = InitializationSequence:: |
4902 | FK_NonConstLValueReferenceBindingToMatrixElement; |
4903 | else |
4904 | llvm_unreachable("unexpected kind of compatible initializer"); |
4905 | break; |
4906 | case Sema::Ref_Related: |
4907 | FK = InitializationSequence::FK_ReferenceInitDropsQualifiers; |
4908 | break; |
4909 | case Sema::Ref_Incompatible: |
4910 | FK = InitializationSequence:: |
4911 | FK_NonConstLValueReferenceBindingToUnrelated; |
4912 | break; |
4913 | } |
4914 | Sequence.SetFailed(FK); |
4915 | } |
4916 | return; |
4917 | } |
4918 | |
4919 | |
4920 | |
4921 | |
4922 | |
4923 | |
4924 | |
4925 | |
4926 | if (!T1Function && |
4927 | (RefRelationship == Sema::Ref_Compatible || |
4928 | (Kind.isCStyleOrFunctionalCast() && |
4929 | RefRelationship == Sema::Ref_Related)) && |
4930 | ((InitCategory.isXValue() && !isNonReferenceableGLValue(Initializer)) || |
4931 | (InitCategory.isPRValue() && |
4932 | (S.getLangOpts().CPlusPlus17 || T2->isRecordType() || |
4933 | T2->isArrayType())))) { |
4934 | ExprValueKind ValueKind = InitCategory.isXValue() ? VK_XValue : VK_PRValue; |
4935 | if (InitCategory.isPRValue() && T2->isRecordType()) { |
4936 | |
4937 | |
4938 | |
4939 | |
4940 | |
4941 | |
4942 | |
4943 | |
4944 | |
4945 | if (!S.getLangOpts().CPlusPlus11 && !S.getLangOpts().MicrosoftExt) |
4946 | Sequence.AddExtraneousCopyToTemporary(cv2T2); |
4947 | else if (S.getLangOpts().CPlusPlus11) |
4948 | CheckCXX98CompatAccessibleCopy(S, Entity, Initializer); |
4949 | } |
4950 | |
4951 | |
4952 | |
4953 | |
4954 | |
4955 | |
4956 | |
4957 | auto T1QualsIgnoreAS = T1Quals; |
4958 | auto T2QualsIgnoreAS = T2Quals; |
4959 | if (T1Quals.getAddressSpace() != T2Quals.getAddressSpace()) { |
4960 | T1QualsIgnoreAS.removeAddressSpace(); |
4961 | T2QualsIgnoreAS.removeAddressSpace(); |
4962 | } |
4963 | QualType cv1T4 = S.Context.getQualifiedType(cv2T2, T1QualsIgnoreAS); |
4964 | if (T1QualsIgnoreAS != T2QualsIgnoreAS) |
4965 | Sequence.AddQualificationConversionStep(cv1T4, ValueKind); |
4966 | Sequence.AddReferenceBindingStep(cv1T4, ValueKind == VK_PRValue); |
4967 | ValueKind = isLValueRef ? VK_LValue : VK_XValue; |
4968 | |
4969 | if (T1Quals.getAddressSpace() != T2Quals.getAddressSpace()) { |
4970 | auto T4Quals = cv1T4.getQualifiers(); |
4971 | T4Quals.addAddressSpace(T1Quals.getAddressSpace()); |
4972 | QualType cv1T4WithAS = S.Context.getQualifiedType(T2, T4Quals); |
4973 | Sequence.AddQualificationConversionStep(cv1T4WithAS, ValueKind); |
4974 | cv1T4 = cv1T4WithAS; |
4975 | } |
4976 | |
4977 | |
4978 | |
4979 | if (RefConv & Sema::ReferenceConversions::DerivedToBase) |
4980 | Sequence.AddDerivedToBaseCastStep(cv1T1, ValueKind); |
4981 | else if (RefConv & Sema::ReferenceConversions::ObjC) |
4982 | Sequence.AddObjCObjectConversionStep(cv1T1); |
4983 | else if (RefConv & Sema::ReferenceConversions::Qualification) { |
4984 | if (!S.Context.hasSameType(cv1T4, cv1T1)) |
4985 | Sequence.AddQualificationConversionStep(cv1T1, ValueKind); |
4986 | } |
4987 | return; |
4988 | } |
4989 | |
4990 | |
4991 | |
4992 | |
4993 | |
4994 | |
4995 | |
4996 | if (T2->isRecordType()) { |
4997 | if (RefRelationship == Sema::Ref_Incompatible) { |
4998 | ConvOvlResult = TryRefInitWithConversionFunction( |
4999 | S, Entity, Kind, Initializer, true, |
5000 | isLValueRef, Sequence); |
5001 | if (ConvOvlResult) |
5002 | Sequence.SetOverloadFailure( |
5003 | InitializationSequence::FK_ReferenceInitOverloadFailed, |
5004 | ConvOvlResult); |
5005 | |
5006 | return; |
5007 | } |
5008 | |
5009 | if (RefRelationship == Sema::Ref_Compatible && |
5010 | isRValueRef && InitCategory.isLValue()) { |
5011 | Sequence.SetFailed( |
5012 | InitializationSequence::FK_RValueReferenceBindingToLValue); |
5013 | return; |
5014 | } |
5015 | |
5016 | Sequence.SetFailed(InitializationSequence::FK_ReferenceInitDropsQualifiers); |
5017 | return; |
5018 | } |
5019 | |
5020 | |
5021 | |
5022 | |
5023 | |
5024 | |
5025 | |
5026 | |
5027 | QualType cv1T1IgnoreAS = |
5028 | T1Quals.hasAddressSpace() |
5029 | ? S.Context.getQualifiedType(T1, T1Quals.withoutAddressSpace()) |
5030 | : cv1T1; |
5031 | |
5032 | InitializedEntity TempEntity = |
5033 | InitializedEntity::InitializeTemporary(cv1T1IgnoreAS); |
5034 | |
5035 | |
5036 | |
5037 | ImplicitConversionSequence ICS |
5038 | = S.TryImplicitConversion(Initializer, TempEntity.getType(), |
5039 | false, |
5040 | Sema::AllowedExplicit::None, |
5041 | false, |
5042 | Kind.isCStyleOrFunctionalCast(), |
5043 | false); |
5044 | |
5045 | if (ICS.isBad()) { |
5046 | |
5047 | |
5048 | |
5049 | |
5050 | if (ConvOvlResult && !Sequence.getFailedCandidateSet().empty()) |
5051 | Sequence.SetOverloadFailure( |
5052 | InitializationSequence::FK_ReferenceInitOverloadFailed, |
5053 | ConvOvlResult); |
5054 | else if (S.Context.getCanonicalType(T2) == S.Context.OverloadTy) |
5055 | Sequence.SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); |
5056 | else |
5057 | Sequence.SetFailed(InitializationSequence::FK_ReferenceInitFailed); |
5058 | return; |
5059 | } else { |
5060 | Sequence.AddConversionSequenceStep(ICS, TempEntity.getType()); |
5061 | } |
5062 | |
5063 | |
5064 | |
5065 | |
5066 | unsigned T1CVRQuals = T1Quals.getCVRQualifiers(); |
5067 | unsigned T2CVRQuals = T2Quals.getCVRQualifiers(); |
5068 | if (RefRelationship == Sema::Ref_Related && |
5069 | ((T1CVRQuals | T2CVRQuals) != T1CVRQuals || |
5070 | !T1Quals.isAddressSpaceSupersetOf(T2Quals))) { |
5071 | Sequence.SetFailed(InitializationSequence::FK_ReferenceInitDropsQualifiers); |
5072 | return; |
5073 | } |
5074 | |
5075 | |
5076 | |
5077 | if (RefRelationship >= Sema::Ref_Related && !isLValueRef && |
5078 | InitCategory.isLValue()) { |
5079 | Sequence.SetFailed( |
5080 | InitializationSequence::FK_RValueReferenceBindingToLValue); |
5081 | return; |
5082 | } |
5083 | |
5084 | Sequence.AddReferenceBindingStep(cv1T1IgnoreAS, true); |
5085 | |
5086 | if (T1Quals.hasAddressSpace()) { |
5087 | if (!Qualifiers::isAddressSpaceSupersetOf(T1Quals.getAddressSpace(), |
5088 | LangAS::Default)) { |
5089 | Sequence.SetFailed( |
5090 | InitializationSequence::FK_ReferenceAddrspaceMismatchTemporary); |
5091 | return; |
5092 | } |
5093 | Sequence.AddQualificationConversionStep(cv1T1, isLValueRef ? VK_LValue |
5094 | : VK_XValue); |
5095 | } |
5096 | } |
5097 | |
5098 | |
5099 | |
5100 | static void TryStringLiteralInitialization(Sema &S, |
5101 | const InitializedEntity &Entity, |
5102 | const InitializationKind &Kind, |
5103 | Expr *Initializer, |
5104 | InitializationSequence &Sequence) { |
5105 | Sequence.AddStringInitStep(Entity.getType()); |
5106 | } |
5107 | |
5108 | |
5109 | static void TryValueInitialization(Sema &S, |
5110 | const InitializedEntity &Entity, |
5111 | const InitializationKind &Kind, |
5112 | InitializationSequence &Sequence, |
5113 | InitListExpr *InitList) { |
5114 | assert((!InitList || InitList->getNumInits() == 0) && |
5115 | "Shouldn't use value-init for non-empty init lists"); |
5116 | |
5117 | |
5118 | |
5119 | |
5120 | QualType T = Entity.getType(); |
5121 | |
5122 | |
5123 | T = S.Context.getBaseElementType(T); |
5124 | |
5125 | if (const RecordType *RT = T->getAs<RecordType>()) { |
5126 | if (CXXRecordDecl *ClassDecl = dyn_cast<CXXRecordDecl>(RT->getDecl())) { |
5127 | bool NeedZeroInitialization = true; |
5128 | |
5129 | |
5130 | |
5131 | |
5132 | |
5133 | |
5134 | |
5135 | |
5136 | |
5137 | |
5138 | |
5139 | |
5140 | CXXConstructorDecl *CD = S.LookupDefaultConstructor(ClassDecl); |
5141 | if (!CD || !CD->getCanonicalDecl()->isDefaulted() || CD->isDeleted()) |
5142 | NeedZeroInitialization = false; |
5143 | |
5144 | |
5145 | |
5146 | |
5147 | |
5148 | |
5149 | |
5150 | if (NeedZeroInitialization) |
5151 | Sequence.AddZeroInitializationStep(Entity.getType()); |
5152 | |
5153 | |
5154 | |
5155 | |
5156 | |
5157 | |
5158 | |
5159 | |
5160 | |
5161 | |
5162 | |
5163 | if (!S.getLangOpts().CPlusPlus11 && |
5164 | ClassDecl->hasUninitializedReferenceMember()) { |
5165 | Sequence.SetFailed(InitializationSequence::FK_TooManyInitsForReference); |
5166 | return; |
5167 | } |
5168 | |
5169 | |
5170 | |
5171 | |
5172 | Expr *InitListAsExpr = InitList; |
5173 | MultiExprArg Args(&InitListAsExpr, InitList ? 1 : 0); |
5174 | bool InitListSyntax = InitList; |
5175 | |
5176 | |
5177 | |
5178 | return TryConstructorInitialization( |
5179 | S, Entity, Kind, Args, T, Entity.getType(), Sequence, InitListSyntax); |
5180 | } |
5181 | } |
5182 | |
5183 | Sequence.AddZeroInitializationStep(Entity.getType()); |
5184 | } |
5185 | |
5186 | |
5187 | static void TryDefaultInitialization(Sema &S, |
5188 | const InitializedEntity &Entity, |
5189 | const InitializationKind &Kind, |
5190 | InitializationSequence &Sequence) { |
5191 | assert(Kind.getKind() == InitializationKind::IK_Default); |
5192 | |
5193 | |
5194 | |
5195 | |
5196 | QualType DestType = S.Context.getBaseElementType(Entity.getType()); |
5197 | |
5198 | |
5199 | |
5200 | |
5201 | if (DestType->isRecordType() && S.getLangOpts().CPlusPlus) { |
5202 | TryConstructorInitialization(S, Entity, Kind, None, DestType, |
5203 | Entity.getType(), Sequence); |
5204 | return; |
5205 | } |
5206 | |
5207 | |
5208 | |
5209 | |
5210 | |
5211 | |
5212 | if (DestType.isConstQualified() && S.getLangOpts().CPlusPlus) { |
5213 | if (!maybeRecoverWithZeroInitialization(S, Sequence, Entity)) |
5214 | Sequence.SetFailed(InitializationSequence::FK_DefaultInitOfConst); |
5215 | return; |
5216 | } |
5217 | |
5218 | |
5219 | if (DestType.getQualifiers().hasObjCLifetime()) { |
5220 | Sequence.AddZeroInitializationStep(Entity.getType()); |
5221 | return; |
5222 | } |
5223 | } |
5224 | |
5225 | |
5226 | |
5227 | |
5228 | static void TryUserDefinedConversion(Sema &S, |
5229 | QualType DestType, |
5230 | const InitializationKind &Kind, |
5231 | Expr *Initializer, |
5232 | InitializationSequence &Sequence, |
5233 | bool TopLevelOfInitList) { |
5234 | assert(!DestType->isReferenceType() && "References are handled elsewhere"); |
5235 | QualType SourceType = Initializer->getType(); |
5236 | assert((DestType->isRecordType() || SourceType->isRecordType()) && |
5237 | "Must have a class type to perform a user-defined conversion"); |
5238 | |
5239 | |
5240 | |
5241 | OverloadCandidateSet &CandidateSet = Sequence.getFailedCandidateSet(); |
5242 | CandidateSet.clear(OverloadCandidateSet::CSK_InitByUserDefinedConversion); |
5243 | CandidateSet.setDestAS(DestType.getQualifiers().getAddressSpace()); |
5244 | |
5245 | |
5246 | |
5247 | bool AllowExplicit = Kind.AllowExplicit(); |
5248 | |
5249 | if (const RecordType *DestRecordType = DestType->getAs<RecordType>()) { |
5250 | |
5251 | |
5252 | CXXRecordDecl *DestRecordDecl |
5253 | = cast<CXXRecordDecl>(DestRecordType->getDecl()); |
5254 | |
5255 | |
5256 | if (S.isCompleteType(Kind.getLocation(), DestType)) { |
5257 | for (NamedDecl *D : S.LookupConstructors(DestRecordDecl)) { |
5258 | auto Info = getConstructorInfo(D); |
5259 | if (!Info.Constructor) |
5260 | continue; |
5261 | |
5262 | if (!Info.Constructor->isInvalidDecl() && |
5263 | Info.Constructor->isConvertingConstructor(true)) { |
5264 | if (Info.ConstructorTmpl) |
5265 | S.AddTemplateOverloadCandidate( |
5266 | Info.ConstructorTmpl, Info.FoundDecl, |
5267 | nullptr, Initializer, CandidateSet, |
5268 | true, |
5269 | false, AllowExplicit); |
5270 | else |
5271 | S.AddOverloadCandidate(Info.Constructor, Info.FoundDecl, |
5272 | Initializer, CandidateSet, |
5273 | true, |
5274 | false, AllowExplicit); |
5275 | } |
5276 | } |
5277 | } |
5278 | } |
5279 | |
5280 | SourceLocation DeclLoc = Initializer->getBeginLoc(); |
5281 | |
5282 | if (const RecordType *SourceRecordType = SourceType->getAs<RecordType>()) { |
5283 | |
5284 | |
5285 | |
5286 | |
5287 | |
5288 | if (S.isCompleteType(DeclLoc, SourceType)) { |
5289 | CXXRecordDecl *SourceRecordDecl |
5290 | = cast<CXXRecordDecl>(SourceRecordType->getDecl()); |
5291 | |
5292 | const auto &Conversions = |
5293 | SourceRecordDecl->getVisibleConversionFunctions(); |
5294 | for (auto I = Conversions.begin(), E = Conversions.end(); I != E; ++I) { |
5295 | NamedDecl *D = *I; |
5296 | CXXRecordDecl *ActingDC = cast<CXXRecordDecl>(D->getDeclContext()); |
5297 | if (isa<UsingShadowDecl>(D)) |
5298 | D = cast<UsingShadowDecl>(D)->getTargetDecl(); |
5299 | |
5300 | FunctionTemplateDecl *ConvTemplate = dyn_cast<FunctionTemplateDecl>(D); |
5301 | CXXConversionDecl *Conv; |
5302 | if (ConvTemplate) |
5303 | Conv = cast<CXXConversionDecl>(ConvTemplate->getTemplatedDecl()); |
5304 | else |
5305 | Conv = cast<CXXConversionDecl>(D); |
5306 | |
5307 | if (ConvTemplate) |
5308 | S.AddTemplateConversionCandidate( |
5309 | ConvTemplate, I.getPair(), ActingDC, Initializer, DestType, |
5310 | CandidateSet, AllowExplicit, AllowExplicit); |
5311 | else |
5312 | S.AddConversionCandidate(Conv, I.getPair(), ActingDC, Initializer, |
5313 | DestType, CandidateSet, AllowExplicit, |
5314 | AllowExplicit); |
5315 | } |
5316 | } |
5317 | } |
5318 | |
5319 | |
5320 | OverloadCandidateSet::iterator Best; |
5321 | if (OverloadingResult Result |
5322 | = CandidateSet.BestViableFunction(S, DeclLoc, Best)) { |
5323 | Sequence.SetOverloadFailure( |
5324 | InitializationSequence::FK_UserConversionOverloadFailed, Result); |
5325 | |
5326 | |
5327 | |
5328 | |
5329 | |
5330 | |
5331 | |
5332 | if (!(Result == OR_Deleted && |
5333 | Kind.getKind() == InitializationKind::IK_Copy)) |
5334 | return; |
5335 | } |
5336 | |
5337 | FunctionDecl *Function = Best->Function; |
5338 | Function->setReferenced(); |
5339 | bool HadMultipleCandidates = (CandidateSet.size() > 1); |
5340 | |
5341 | if (isa<CXXConstructorDecl>(Function)) { |
5342 | |
5343 | |
5344 | |
5345 | Sequence.AddUserConversionStep(Function, Best->FoundDecl, |
5346 | DestType.getUnqualifiedType(), |
5347 | HadMultipleCandidates); |
5348 | |
5349 | |
5350 | |
5351 | |
5352 | |
5353 | |
5354 | |
5355 | |
5356 | |
5357 | |
5358 | |
5359 | |
5360 | |
5361 | |
5362 | |
5363 | |
5364 | |
5365 | |
5366 | if (!S.getLangOpts().CPlusPlus17) |
5367 | Sequence.AddFinalCopy(DestType); |
5368 | else if (DestType.hasQualifiers()) |
5369 | Sequence.AddQualificationConversionStep(DestType, VK_PRValue); |
5370 | return; |
5371 | } |
5372 | |
5373 | |
5374 | QualType ConvType = Function->getCallResultType(); |
5375 | Sequence.AddUserConversionStep(Function, Best->FoundDecl, ConvType, |
5376 | HadMultipleCandidates); |
5377 | |
5378 | if (ConvType->getAs<RecordType>()) { |
5379 | |
5380 | |
5381 | |
5382 | |
5383 | |
5384 | |
5385 | |
5386 | |
5387 | |
5388 | if (!S.getLangOpts().CPlusPlus17 || |
5389 | Function->getReturnType()->isReferenceType() || |
5390 | !S.Context.hasSameUnqualifiedType(ConvType, DestType)) |
5391 | Sequence.AddFinalCopy(DestType); |
5392 | else if (!S.Context.hasSameType(ConvType, DestType)) |
5393 | Sequence.AddQualificationConversionStep(DestType, VK_PRValue); |
5394 | return; |
5395 | } |
5396 | |
5397 | |
5398 | |
5399 | if (Best->FinalConversion.First || Best->FinalConversion.Second || |
5400 | Best->FinalConversion.Third) { |
5401 | ImplicitConversionSequence ICS; |
5402 | ICS.setStandard(); |
5403 | ICS.Standard = Best->FinalConversion; |
5404 | Sequence.AddConversionSequenceStep(ICS, DestType, TopLevelOfInitList); |
5405 | } |
5406 | } |
5407 | |
5408 | |
5409 | |
5410 | |
5411 | |
5412 | |
5413 | |
5414 | |
5415 | static bool isLibstdcxxPointerReturnFalseHack(Sema &S, |
5416 | const InitializedEntity &Entity, |
5417 | const Expr *Init) { |
5418 | return S.getLangOpts().CPlusPlus11 && |
5419 | Entity.getKind() == InitializedEntity::EK_Result && |
5420 | Entity.getType()->isPointerType() && |
5421 | isa<CXXBoolLiteralExpr>(Init) && |
5422 | !cast<CXXBoolLiteralExpr>(Init)->getValue() && |
5423 | S.getSourceManager().isInSystemHeader(Init->getExprLoc()); |
5424 | } |
5425 | |
5426 | |
5427 | enum InvalidICRKind { IIK_okay, IIK_nonlocal, IIK_nonscalar }; |
5428 | |
5429 | |
5430 | static InvalidICRKind isInvalidICRSource(ASTContext &C, Expr *e, |
5431 | bool isAddressOf, bool &isWeakAccess) { |
5432 | |
5433 | e = e->IgnoreParens(); |
5434 | |
5435 | |
5436 | if (UnaryOperator *op = dyn_cast<UnaryOperator>(e)) { |
5437 | if (op->getOpcode() == UO_AddrOf) |
5438 | return isInvalidICRSource(C, op->getSubExpr(), true, |
5439 | isWeakAccess); |
5440 | |
5441 | |
5442 | } else if (CastExpr *ce = dyn_cast<CastExpr>(e)) { |
5443 | switch (ce->getCastKind()) { |
5444 | case CK_Dependent: |
5445 | case CK_BitCast: |
5446 | case CK_LValueBitCast: |
5447 | case CK_NoOp: |
5448 | return isInvalidICRSource(C, ce->getSubExpr(), isAddressOf, isWeakAccess); |
5449 | |
5450 | case CK_ArrayToPointerDecay: |
5451 | return IIK_nonscalar; |
5452 | |
5453 | case CK_NullToPointer: |
5454 | return IIK_okay; |
5455 | |
5456 | default: |
5457 | break; |
5458 | } |
5459 | |
5460 | |
5461 | } else if (isa<DeclRefExpr>(e)) { |
5462 | |
5463 | |
5464 | if (e->getType().getObjCLifetime() == Qualifiers::OCL_Weak) |
5465 | isWeakAccess = true; |
5466 | |
5467 | if (!isAddressOf) return IIK_nonlocal; |
5468 | |
5469 | VarDecl *var = dyn_cast<VarDecl>(cast<DeclRefExpr>(e)->getDecl()); |
5470 | if (!var) return IIK_nonlocal; |
5471 | |
5472 | return (var->hasLocalStorage() ? IIK_okay : IIK_nonlocal); |
5473 | |
5474 | |
5475 | } else if (ConditionalOperator *cond = dyn_cast<ConditionalOperator>(e)) { |
5476 | if (InvalidICRKind iik = isInvalidICRSource(C, cond->getLHS(), isAddressOf, |
5477 | isWeakAccess)) |
5478 | return iik; |
5479 | |
5480 | return isInvalidICRSource(C, cond->getRHS(), isAddressOf, isWeakAccess); |
5481 | |
5482 | |
5483 | } else if (isa<ArraySubscriptExpr>(e)) { |
5484 | return IIK_nonscalar; |
5485 | |
5486 | |
5487 | } else { |
5488 | return (e->isNullPointerConstant(C, Expr::NPC_ValueDependentIsNull) |
5489 | ? IIK_okay : IIK_nonlocal); |
5490 | } |
5491 | |
5492 | return IIK_nonlocal; |
5493 | } |
5494 | |
5495 | |
5496 | |
5497 | static void checkIndirectCopyRestoreSource(Sema &S, Expr *src) { |
5498 | assert(src->isPRValue()); |
5499 | bool isWeakAccess = false; |
5500 | InvalidICRKind iik = isInvalidICRSource(S.Context, src, false, isWeakAccess); |
5501 | |
5502 | |
5503 | if (S.getLangOpts().ObjCAutoRefCount && isWeakAccess) |
5504 | S.Cleanup.setExprNeedsCleanups(true); |
5505 | |
5506 | if (iik == IIK_okay) return; |
5507 | |
5508 | S.Diag(src->getExprLoc(), diag::err_arc_nonlocal_writeback) |
5509 | << ((unsigned) iik - 1) |
5510 | << src->getSourceRange(); |
5511 | } |
5512 | |
5513 | |
5514 | |
5515 | static bool hasCompatibleArrayTypes(ASTContext &Context, const ArrayType *Dest, |
5516 | const ArrayType *Source) { |
5517 | |
5518 | |
5519 | if (Context.hasSameType(QualType(Dest, 0), QualType(Source, 0))) |
5520 | return true; |
5521 | |
5522 | |
5523 | if (!Context.hasSameType(Dest->getElementType(), Source->getElementType())) |
5524 | return false; |
5525 | |
5526 | |
5527 | |
5528 | return Source->isConstantArrayType() && Dest->isIncompleteArrayType(); |
5529 | } |
5530 | |
5531 | static bool tryObjCWritebackConversion(Sema &S, |
5532 | InitializationSequence &Sequence, |
5533 | const InitializedEntity &Entity, |
5534 | Expr *Initializer) { |
5535 | bool ArrayDecay = false; |
5536 | QualType ArgType = Initializer->getType(); |
5537 | QualType ArgPointee; |
5538 | if (const ArrayType *ArgArrayType = S.Context.getAsArrayType(ArgType)) { |
5539 | ArrayDecay = true; |
5540 | ArgPointee = ArgArrayType->getElementType(); |
5541 | ArgType = S.Context.getPointerType(ArgPointee); |
5542 | } |
5543 | |
5544 | |
5545 | QualType ConvertedArgType; |
5546 | if (!S.isObjCWritebackConversion(ArgType, Entity.getType(), |
5547 | ConvertedArgType)) |
5548 | return false; |
5549 | |
5550 | |
5551 | |
5552 | bool ShouldCopy = true; |
5553 | if (ParmVarDecl *param = cast_or_null<ParmVarDecl>(Entity.getDecl())) |
5554 | ShouldCopy = (param->getObjCDeclQualifier() != ParmVarDecl::OBJC_TQ_Out); |
5555 | |
5556 | |
5557 | if (ArrayDecay || Initializer->isGLValue()) { |
5558 | ImplicitConversionSequence ICS; |
5559 | ICS.setStandard(); |
5560 | ICS.Standard.setAsIdentityConversion(); |
5561 | |
5562 | QualType ResultType; |
5563 | if (ArrayDecay) { |
5564 | ICS.Standard.First = ICK_Array_To_Pointer; |
5565 | ResultType = S.Context.getPointerType(ArgPointee); |
5566 | } else { |
5567 | ICS.Standard.First = ICK_Lvalue_To_Rvalue; |
5568 | ResultType = Initializer->getType().getNonLValueExprType(S.Context); |
5569 | } |
5570 | |
5571 | Sequence.AddConversionSequenceStep(ICS, ResultType); |
5572 | } |
5573 | |
5574 | Sequence.AddPassByIndirectCopyRestoreStep(Entity.getType(), ShouldCopy); |
5575 | return true; |
5576 | } |
5577 | |
5578 | static bool TryOCLSamplerInitialization(Sema &S, |
5579 | InitializationSequence &Sequence, |
5580 | QualType DestType, |
5581 | Expr *Initializer) { |
5582 | if (!S.getLangOpts().OpenCL || !DestType->isSamplerT() || |
5583 | (!Initializer->isIntegerConstantExpr(S.Context) && |
5584 | !Initializer->getType()->isSamplerT())) |
5585 | return false; |
5586 | |
5587 | Sequence.AddOCLSamplerInitStep(DestType); |
5588 | return true; |
5589 | } |
5590 | |
5591 | static bool IsZeroInitializer(Expr *Initializer, Sema &S) { |
5592 | return Initializer->isIntegerConstantExpr(S.getASTContext()) && |
5593 | (Initializer->EvaluateKnownConstInt(S.getASTContext()) == 0); |
5594 | } |
5595 | |
5596 | static bool TryOCLZeroOpaqueTypeInitialization(Sema &S, |
5597 | InitializationSequence &Sequence, |
5598 | QualType DestType, |
5599 | Expr *Initializer) { |
5600 | if (!S.getLangOpts().OpenCL) |
5601 | return false; |
5602 | |
5603 | |
5604 | |
5605 | |
5606 | |
5607 | |
5608 | |
5609 | |
5610 | |
5611 | if (DestType->isEventT() || DestType->isQueueT()) { |
5612 | if (!IsZeroInitializer(Initializer, S)) |
5613 | return false; |
5614 | |
5615 | Sequence.AddOCLZeroOpaqueTypeStep(DestType); |
5616 | return true; |
5617 | } |
5618 | |
5619 | |
5620 | |
5621 | |
5622 | if (S.getOpenCLOptions().isAvailableOption( |
5623 | "cl_intel_device_side_avc_motion_estimation", S.getLangOpts()) && |
5624 | DestType->isOCLIntelSubgroupAVCType()) { |
5625 | if (DestType->isOCLIntelSubgroupAVCMcePayloadType() || |
5626 | DestType->isOCLIntelSubgroupAVCMceResultType()) |
5627 | return false; |
5628 | if (!IsZeroInitializer(Initializer, S)) |
5629 | return false; |
5630 | |
5631 | Sequence.AddOCLZeroOpaqueTypeStep(DestType); |
5632 | return true; |
5633 | } |
5634 | |
5635 | return false; |
5636 | } |
5637 | |
5638 | InitializationSequence::InitializationSequence( |
5639 | Sema &S, const InitializedEntity &Entity, const InitializationKind &Kind, |
5640 | MultiExprArg Args, bool TopLevelOfInitList, bool TreatUnavailableAsInvalid) |
5641 | : FailedOverloadResult(OR_Success), |
5642 | FailedCandidateSet(Kind.getLocation(), OverloadCandidateSet::CSK_Normal) { |
5643 | InitializeFrom(S, Entity, Kind, Args, TopLevelOfInitList, |
5644 | TreatUnavailableAsInvalid); |
5645 | } |
5646 | |
5647 | |
5648 | |
5649 | static bool isExprAnUnaddressableFunction(Sema &S, const Expr *E) { |
5650 | auto *DRE = dyn_cast<DeclRefExpr>(E); |
5651 | if (!DRE || !isa<FunctionDecl>(DRE->getDecl())) |
5652 | return false; |
5653 | |
5654 | return !S.checkAddressOfFunctionIsAvailable( |
5655 | cast<FunctionDecl>(DRE->getDecl())); |
5656 | } |
5657 | |
5658 | |
5659 | |
5660 | static bool canPerformArrayCopy(const InitializedEntity &Entity) { |
5661 | switch (Entity.getKind()) { |
5662 | case InitializedEntity::EK_LambdaCapture: |
5663 | |
5664 | |
5665 | |
5666 | return true; |
5667 | |
5668 | case InitializedEntity::EK_Variable: |
5669 | |
5670 | |
5671 | |
5672 | return isa<DecompositionDecl>(Entity.getDecl()); |
5673 | |
5674 | case InitializedEntity::EK_Member: |
5675 | |
5676 | |
5677 | |
5678 | return Entity.isImplicitMemberInitializer(); |
5679 | |
5680 | case InitializedEntity::EK_ArrayElement: |
5681 | |
5682 | |
5683 | if (auto *E = Entity.getParent()) |
5684 | return canPerformArrayCopy(*E); |
5685 | break; |
5686 | |
5687 | default: |
5688 | break; |
5689 | } |
5690 | |
5691 | return false; |
5692 | } |
5693 | |
5694 | void InitializationSequence::InitializeFrom(Sema &S, |
5695 | const InitializedEntity &Entity, |
5696 | const InitializationKind &Kind, |
5697 | MultiExprArg Args, |
5698 | bool TopLevelOfInitList, |
5699 | bool TreatUnavailableAsInvalid) { |
5700 | ASTContext &Context = S.Context; |
5701 | |
5702 | |
5703 | |
5704 | |
5705 | |
5706 | for (unsigned I = 0, E = Args.size(); I != E; ++I) |
5707 | if (Args[I]->getType()->isNonOverloadPlaceholderType()) { |
5708 | |
5709 | ExprResult result = S.CheckPlaceholderExpr(Args[I]); |
5710 | if (result.isInvalid()) { |
5711 | SetFailed(FK_PlaceholderType); |
5712 | return; |
5713 | } |
5714 | Args[I] = result.get(); |
5715 | } |
5716 | |
5717 | |
5718 | |
5719 | |
5720 | |
5721 | |
5722 | |
5723 | QualType DestType = Entity.getType(); |
5724 | |
5725 | if (DestType->isDependentType() || |
5726 | Expr::hasAnyTypeDependentArguments(Args)) { |
5727 | SequenceKind = DependentSequence; |
5728 | return; |
5729 | } |
5730 | |
5731 | |
5732 | setSequenceKind(NormalSequence); |
5733 | |
5734 | QualType SourceType; |
5735 | Expr *Initializer = nullptr; |
5736 | if (Args.size() == 1) { |
5737 | Initializer = Args[0]; |
5738 | if (S.getLangOpts().ObjC) { |
5739 | if (S.CheckObjCBridgeRelatedConversions(Initializer->getBeginLoc(), |
5740 | DestType, Initializer->getType(), |
5741 | Initializer) || |
5742 | S.CheckConversionToObjCLiteral(DestType, Initializer)) |
5743 | Args[0] = Initializer; |
5744 | } |
5745 | if (!isa<InitListExpr>(Initializer)) |
5746 | SourceType = Initializer->getType(); |
5747 | } |
5748 | |
5749 | |
5750 | |
5751 | if (Kind.getKind() != InitializationKind::IK_Direct) { |
5752 | if (InitListExpr *InitList = dyn_cast_or_null<InitListExpr>(Initializer)) { |
5753 | TryListInitialization(S, Entity, Kind, InitList, *this, |
5754 | TreatUnavailableAsInvalid); |
5755 | return; |
5756 | } |
5757 | } |
5758 | |
5759 | |
5760 | if (DestType->isReferenceType()) { |
5761 | |
5762 | |
5763 | |
5764 | |
5765 | |
5766 | if (Args.size() != 1) |
5767 | SetFailed(FK_TooManyInitsForReference); |
5768 | |
5769 | |
5770 | |
5771 | |
5772 | else if (isa<InitListExpr>(Args[0])) |
5773 | SetFailed(FK_ParenthesizedListInitForReference); |
5774 | else |
5775 | TryReferenceInitialization(S, Entity, Kind, Args[0], *this); |
5776 | return; |
5777 | } |
5778 | |
5779 | |
5780 | if (Kind.getKind() == InitializationKind::IK_Value || |
5781 | (Kind.getKind() == InitializationKind::IK_Direct && Args.empty())) { |
5782 | TryValueInitialization(S, Entity, Kind, *this); |
5783 | return; |
5784 | } |
5785 | |
5786 | |
5787 | if (Kind.getKind() == InitializationKind::IK_Default) { |
5788 | TryDefaultInitialization(S, Entity, Kind, *this); |
5789 | return; |
5790 | } |
5791 | |
5792 | |
5793 | |
5794 | |
5795 | |
5796 | |
5797 | if (const ArrayType *DestAT = Context.getAsArrayType(DestType)) { |
5798 | if (Initializer && isa<VariableArrayType>(DestAT)) { |
5799 | SetFailed(FK_VariableLengthArrayHasInitializer); |
5800 | return; |
5801 | } |
5802 | |
5803 | if (Initializer) { |
5804 | switch (IsStringInit(Initializer, DestAT, Context)) { |
5805 | case SIF_None: |
5806 | TryStringLiteralInitialization(S, Entity, Kind, Initializer, *this); |
5807 | return; |
5808 | case SIF_NarrowStringIntoWideChar: |
5809 | SetFailed(FK_NarrowStringIntoWideCharArray); |
5810 | return; |
5811 | case SIF_WideStringIntoChar: |
5812 | SetFailed(FK_WideStringIntoCharArray); |
5813 | return; |
5814 | case SIF_IncompatWideStringIntoWideChar: |
5815 | SetFailed(FK_IncompatWideStringIntoWideChar); |
5816 | return; |
5817 | case SIF_PlainStringIntoUTF8Char: |
5818 | SetFailed(FK_PlainStringIntoUTF8Char); |
5819 | return; |
5820 | case SIF_UTF8StringIntoPlainChar: |
5821 | SetFailed(FK_UTF8StringIntoPlainChar); |
5822 | return; |
5823 | case SIF_Other: |
5824 | break; |
5825 | } |
5826 | } |
5827 | |
5828 | |
5829 | |
5830 | if (Initializer && isa<ConstantArrayType>(DestAT) && |
5831 | S.Context.hasSameUnqualifiedType(Initializer->getType(), |
5832 | Entity.getType()) && |
5833 | canPerformArrayCopy(Entity)) { |
5834 | |
5835 | if (Initializer->isPRValue()) { |
5836 | AddArrayInitStep(DestType, false); |
5837 | return; |
5838 | } |
5839 | |
5840 | |
5841 | InitializedEntity Element = |
5842 | InitializedEntity::InitializeElement(S.Context, 0, Entity); |
5843 | QualType InitEltT = |
5844 | Context.getAsArrayType(Initializer->getType())->getElementType(); |
5845 | OpaqueValueExpr OVE(Initializer->getExprLoc(), InitEltT, |
5846 | Initializer->getValueKind(), |
5847 | Initializer->getObjectKind()); |
5848 | Expr *OVEAsExpr = &OVE; |
5849 | InitializeFrom(S, Element, Kind, OVEAsExpr, TopLevelOfInitList, |
5850 | TreatUnavailableAsInvalid); |
5851 | if (!Failed()) |
5852 | AddArrayInitLoopStep(Entity.getType(), InitEltT); |
5853 | return; |
5854 | } |
5855 | |
5856 | |
5857 | |
5858 | |
5859 | if (!S.getLangOpts().CPlusPlus && Initializer && |
5860 | isa<CompoundLiteralExpr>(Initializer->IgnoreParens()) && |
5861 | Initializer->getType()->isArrayType()) { |
5862 | const ArrayType *SourceAT |
5863 | = Context.getAsArrayType(Initializer->getType()); |
5864 | if (!hasCompatibleArrayTypes(S.Context, DestAT, SourceAT)) |
5865 | SetFailed(FK_ArrayTypeMismatch); |
5866 | else if (Initializer->HasSideEffects(S.Context)) |
5867 | SetFailed(FK_NonConstantArrayInit); |
5868 | else { |
5869 | AddArrayInitStep(DestType, true); |
5870 | } |
5871 | } |
5872 | |
5873 | |
5874 | else if (S.getLangOpts().CPlusPlus && |
5875 | Entity.getKind() == InitializedEntity::EK_Member && |
5876 | Initializer && isa<InitListExpr>(Initializer)) { |
5877 | TryListInitialization(S, Entity, Kind, cast<InitListExpr>(Initializer), |
5878 | *this, TreatUnavailableAsInvalid); |
5879 | AddParenthesizedArrayInitStep(DestType); |
5880 | } else if (DestAT->getElementType()->isCharType()) |
5881 | SetFailed(FK_ArrayNeedsInitListOrStringLiteral); |
5882 | else if (IsWideCharCompatible(DestAT->getElementType(), Context)) |
5883 | SetFailed(FK_ArrayNeedsInitListOrWideStringLiteral); |
5884 | else |
5885 | SetFailed(FK_ArrayNeedsInitList); |
5886 | |
5887 | return; |
5888 | } |
5889 | |
5890 | |
5891 | |
5892 | bool allowObjCWritebackConversion = S.getLangOpts().ObjCAutoRefCount && |
5893 | Entity.isParameterKind(); |
5894 | |
5895 | if (TryOCLSamplerInitialization(S, *this, DestType, Initializer)) |
5896 | return; |
5897 | |
5898 | |
5899 | |
5900 | if (!S.getLangOpts().CPlusPlus) { |
5901 | |
5902 | if (allowObjCWritebackConversion && |
5903 | tryObjCWritebackConversion(S, *this, Entity, Initializer)) { |
5904 | return; |
5905 | } |
5906 | |
5907 | if (TryOCLZeroOpaqueTypeInitialization(S, *this, DestType, Initializer)) |
5908 | return; |
5909 | |
5910 | |
5911 | AddCAssignmentStep(DestType); |
5912 | MaybeProduceObjCObject(S, *this, Entity); |
5913 | return; |
5914 | } |
5915 | |
5916 | assert(S.getLangOpts().CPlusPlus); |
5917 | |
5918 | |
5919 | if (DestType->isRecordType()) { |
5920 | |
5921 | |
5922 | |
5923 | |
5924 | if (Kind.getKind() == InitializationKind::IK_Direct || |
5925 | (Kind.getKind() == InitializationKind::IK_Copy && |
5926 | (Context.hasSameUnqualifiedType(SourceType, DestType) || |
5927 | S.IsDerivedFrom(Initializer->getBeginLoc(), SourceType, DestType)))) |
5928 | TryConstructorInitialization(S, Entity, Kind, Args, |
5929 | DestType, DestType, *this); |
5930 | |
5931 | |
5932 | |
5933 | |
5934 | |
5935 | |
5936 | else |
5937 | TryUserDefinedConversion(S, DestType, Kind, Initializer, *this, |
5938 | TopLevelOfInitList); |
5939 | return; |
5940 | } |
5941 | |
5942 | assert(Args.size() >= 1 && "Zero-argument case handled above"); |
5943 | |
5944 | |
5945 | if (Args.size() > 1) { |
5946 | SetFailed(FK_TooManyInitsForScalar); |
5947 | return; |
5948 | } else if (isa<InitListExpr>(Args[0])) { |
5949 | SetFailed(FK_ParenthesizedListInitForScalar); |
5950 | return; |
5951 | } |
5952 | |
5953 | |
5954 | |
5955 | if (!SourceType.isNull() && SourceType->isRecordType()) { |
5956 | |
5957 | |
5958 | bool NeedAtomicConversion = false; |
5959 | if (const AtomicType *Atomic = DestType->getAs<AtomicType>()) { |
5960 | if (Context.hasSameUnqualifiedType(SourceType, Atomic->getValueType()) || |
5961 | S.IsDerivedFrom(Initializer->getBeginLoc(), SourceType, |
5962 | Atomic->getValueType())) { |
5963 | DestType = Atomic->getValueType(); |
5964 | NeedAtomicConversion = true; |
5965 | } |
5966 | } |
5967 | |
5968 | TryUserDefinedConversion(S, DestType, Kind, Initializer, *this, |
5969 | TopLevelOfInitList); |
5970 | MaybeProduceObjCObject(S, *this, Entity); |
5971 | if (!Failed() && NeedAtomicConversion) |
5972 | AddAtomicConversionStep(Entity.getType()); |
5973 | return; |
5974 | } |
5975 | |
5976 | |
5977 | |
5978 | |
5979 | if (!SourceType.isNull() && SourceType->isNullPtrType() && |
5980 | DestType->isBooleanType() && |
5981 | Kind.getKind() == InitializationKind::IK_Direct) { |
5982 | AddConversionSequenceStep( |
5983 | ImplicitConversionSequence::getNullptrToBool(SourceType, DestType, |
5984 | Initializer->isGLValue()), |
5985 | DestType); |
5986 | return; |
5987 | } |
5988 | |
5989 | |
5990 | |
5991 | |
5992 | |
5993 | |
5994 | |
5995 | ImplicitConversionSequence ICS |
5996 | = S.TryImplicitConversion(Initializer, DestType, |
5997 | true, |
5998 | Sema::AllowedExplicit::None, |
5999 | false, |
6000 | Kind.isCStyleOrFunctionalCast(), |
6001 | allowObjCWritebackConversion); |
6002 | |
6003 | if (ICS.isStandard() && |
6004 | ICS.Standard.Second == ICK_Writeback_Conversion) { |
6005 | |
6006 | |
6007 | |
6008 | |
6009 | bool ShouldCopy = true; |
6010 | if (ParmVarDecl *Param = cast_or_null<ParmVarDecl>(Entity.getDecl())) |
6011 | ShouldCopy = (Param->getObjCDeclQualifier() != ParmVarDecl::OBJC_TQ_Out); |
6012 | |
6013 | |
6014 | if (ICS.Standard.First == ICK_Array_To_Pointer || |
6015 | ICS.Standard.First == ICK_Lvalue_To_Rvalue) { |
6016 | ImplicitConversionSequence LvalueICS; |
6017 | LvalueICS.setStandard(); |
6018 | LvalueICS.Standard.setAsIdentityConversion(); |
6019 | LvalueICS.Standard.setAllToTypes(ICS.Standard.getToType(0)); |
6020 | LvalueICS.Standard.First = ICS.Standard.First; |
6021 | AddConversionSequenceStep(LvalueICS, ICS.Standard.getToType(0)); |
6022 | } |
6023 | |
6024 | AddPassByIndirectCopyRestoreStep(DestType, ShouldCopy); |
6025 | } else if (ICS.isBad()) { |
6026 | DeclAccessPair dap; |
6027 | if (isLibstdcxxPointerReturnFalseHack(S, Entity, Initializer)) { |
6028 | AddZeroInitializationStep(Entity.getType()); |
6029 | } else if (Initializer->getType() == Context.OverloadTy && |
6030 | !S.ResolveAddressOfOverloadedFunction(Initializer, DestType, |
6031 | false, dap)) |
6032 | SetFailed(InitializationSequence::FK_AddressOfOverloadFailed); |
6033 | else if (Initializer->getType()->isFunctionType() && |
6034 | isExprAnUnaddressableFunction(S, Initializer)) |
6035 | SetFailed(InitializationSequence::FK_AddressOfUnaddressableFunction); |
6036 | else |
6037 | SetFailed(InitializationSequence::FK_ConversionFailed); |
6038 | } else { |
6039 | AddConversionSequenceStep(ICS, DestType, TopLevelOfInitList); |
6040 | |
6041 | MaybeProduceObjCObject(S, *this, Entity); |
6042 | } |
6043 | } |
6044 | |
6045 | InitializationSequence::~InitializationSequence() { |
6046 | for (auto &S : Steps) |
6047 | S.Destroy(); |
6048 | } |
6049 | |
6050 | |
6051 | |
6052 | |
6053 | static Sema::AssignmentAction |
6054 | getAssignmentAction(const InitializedEntity &Entity, bool Diagnose = false) { |
6055 | switch(Entity.getKind()) { |
6056 | case InitializedEntity::EK_Variable: |
6057 | case InitializedEntity::EK_New: |
6058 | case InitializedEntity::EK_Exception: |
6059 | case InitializedEntity::EK_Base: |
6060 | case InitializedEntity::EK_Delegating: |
6061 | return Sema::AA_Initializing; |
6062 | |
6063 | case InitializedEntity::EK_Parameter: |
6064 | if (Entity.getDecl() && |
6065 | isa<ObjCMethodDecl>(Entity.getDecl()->getDeclContext())) |
6066 | return Sema::AA_Sending; |
6067 | |
6068 | return Sema::AA_Passing; |
6069 | |
6070 | case InitializedEntity::EK_Parameter_CF_Audited: |
6071 | if (Entity.getDecl() && |
6072 | isa<ObjCMethodDecl>(Entity.getDecl()->getDeclContext())) |
6073 | return Sema::AA_Sending; |
6074 | |
6075 | return !Diagnose ? Sema::AA_Passing : Sema::AA_Passing_CFAudited; |
6076 | |
6077 | case InitializedEntity::EK_Result: |
6078 | case InitializedEntity::EK_StmtExprResult: |
6079 | return Sema::AA_Returning; |
6080 | |
6081 | case InitializedEntity::EK_Temporary: |
6082 | case InitializedEntity::EK_RelatedResult: |
6083 | |
6084 | return Sema::AA_Casting; |
6085 | |
6086 | case InitializedEntity::EK_TemplateParameter: |
6087 | |
6088 | |
6089 | return Sema::AA_Converting; |
6090 | |
6091 | case InitializedEntity::EK_Member: |
6092 | case InitializedEntity::EK_Binding: |
6093 | case InitializedEntity::EK_ArrayElement: |
6094 | case InitializedEntity::EK_VectorElement: |
6095 | case InitializedEntity::EK_ComplexElement: |
6096 | case InitializedEntity::EK_BlockElement: |
6097 | case InitializedEntity::EK_LambdaToBlockConversionBlockElement: |
6098 | case InitializedEntity::EK_LambdaCapture: |
6099 | case InitializedEntity::EK_CompoundLiteralInit: |
6100 | return Sema::AA_Initializing; |
6101 | } |
6102 | |
6103 | llvm_unreachable("Invalid EntityKind!"); |
6104 | } |
6105 | |
6106 | |
6107 | |
6108 | static bool shouldBindAsTemporary(const InitializedEntity &Entity) { |
6109 | switch (Entity.getKind()) { |
6110 | case InitializedEntity::EK_ArrayElement: |
6111 | case InitializedEntity::EK_Member: |
6112 | case InitializedEntity::EK_Result: |
6113 | case InitializedEntity::EK_StmtExprResult: |
6114 | case InitializedEntity::EK_New: |
6115 | case InitializedEntity::EK_Variable: |
6116 | case InitializedEntity::EK_Base: |
6117 | case InitializedEntity::EK_Delegating: |
6118 | case InitializedEntity::EK_VectorElement: |
6119 | case InitializedEntity::EK_ComplexElement: |
6120 | case InitializedEntity::EK_Exception: |
6121 | case InitializedEntity::EK_BlockElement: |
6122 | case InitializedEntity::EK_LambdaToBlockConversionBlockElement: |
6123 | case InitializedEntity::EK_LambdaCapture: |
6124 | case InitializedEntity::EK_CompoundLiteralInit: |
6125 | case InitializedEntity::EK_TemplateParameter: |
6126 | return false; |
6127 | |
6128 | case InitializedEntity::EK_Parameter: |
6129 | case InitializedEntity::EK_Parameter_CF_Audited: |
6130 | case InitializedEntity::EK_Temporary: |
6131 | case InitializedEntity::EK_RelatedResult: |
6132 | case InitializedEntity::EK_Binding: |
6133 | return true; |
6134 | } |
6135 | |
6136 | llvm_unreachable("missed an InitializedEntity kind?"); |
6137 | } |
6138 | |
6139 | |
6140 | |
6141 | static bool shouldDestroyEntity(const InitializedEntity &Entity) { |
6142 | switch (Entity.getKind()) { |
6143 | case InitializedEntity::EK_Result: |
6144 | case InitializedEntity::EK_StmtExprResult: |
6145 | case InitializedEntity::EK_New: |
6146 | case InitializedEntity::EK_Base: |
6147 | case InitializedEntity::EK_Delegating: |
6148 | case InitializedEntity::EK_VectorElement: |
6149 | case InitializedEntity::EK_ComplexElement: |
6150 | case InitializedEntity::EK_BlockElement: |
6151 | case InitializedEntity::EK_LambdaToBlockConversionBlockElement: |
6152 | case InitializedEntity::EK_LambdaCapture: |
6153 | return false; |
6154 | |
6155 | case InitializedEntity::EK_Member: |
6156 | case InitializedEntity::EK_Binding: |
6157 | case InitializedEntity::EK_Variable: |
6158 | case InitializedEntity::EK_Parameter: |
6159 | case InitializedEntity::EK_Parameter_CF_Audited: |
6160 | case InitializedEntity::EK_TemplateParameter: |
6161 | case InitializedEntity::EK_Temporary: |
6162 | case InitializedEntity::EK_ArrayElement: |
6163 | case InitializedEntity::EK_Exception: |
6164 | case InitializedEntity::EK_CompoundLiteralInit: |
6165 | case InitializedEntity::EK_RelatedResult: |
6166 | return true; |
6167 | } |
6168 | |
6169 | llvm_unreachable("missed an InitializedEntity kind?"); |
6170 | } |
6171 | |
6172 | |
6173 | static SourceLocation getInitializationLoc(const InitializedEntity &Entity, |
6174 | Expr *Initializer) { |
6175 | switch (Entity.getKind()) { |
6176 | case InitializedEntity::EK_Result: |
6177 | case InitializedEntity::EK_StmtExprResult: |
6178 | return Entity.getReturnLoc(); |
6179 | |
6180 | case InitializedEntity::EK_Exception: |
6181 | return Entity.getThrowLoc(); |
6182 | |
6183 | case InitializedEntity::EK_Variable: |
6184 | case InitializedEntity::EK_Binding: |
6185 | return Entity.getDecl()->getLocation(); |
6186 | |
6187 | case InitializedEntity::EK_LambdaCapture: |
6188 | return Entity.getCaptureLoc(); |
6189 | |
6190 | case InitializedEntity::EK_ArrayElement: |
6191 | case InitializedEntity::EK_Member: |
6192 | case InitializedEntity::EK_Parameter: |
6193 | case InitializedEntity::EK_Parameter_CF_Audited: |
6194 | case InitializedEntity::EK_TemplateParameter: |
6195 | case InitializedEntity::EK_Temporary: |
6196 | case InitializedEntity::EK_New: |
6197 | case InitializedEntity::EK_Base: |
6198 | case InitializedEntity::EK_Delegating: |
6199 | case InitializedEntity::EK_VectorElement: |
6200 | case InitializedEntity::EK_ComplexElement: |
6201 | case InitializedEntity::EK_BlockElement: |
6202 | case InitializedEntity::EK_LambdaToBlockConversionBlockElement: |
6203 | case InitializedEntity::EK_CompoundLiteralInit: |
6204 | case InitializedEntity::EK_RelatedResult: |
6205 | return Initializer->getBeginLoc(); |
6206 | } |
6207 | llvm_unreachable("missed an InitializedEntity kind?"); |
6208 | } |
6209 | |
6210 | |
6211 | |
6212 | |
6213 | |
6214 | |
6215 | |
6216 | |
6217 | |
6218 | |
6219 | |
6220 | |
6221 | |
6222 | |
6223 | |
6224 | |
6225 | |
6226 | |
6227 | |
6228 | |
6229 | |
6230 | static ExprResult CopyObject(Sema &S, |
6231 | QualType T, |
6232 | const InitializedEntity &Entity, |
6233 | ExprResult CurInit, |
6234 | bool IsExtraneousCopy) { |
6235 | if (CurInit.isInvalid()) |
6236 | return CurInit; |
6237 | |
6238 | Expr *CurInitExpr = (Expr *)CurInit.get(); |
6239 | CXXRecordDecl *Class = nullptr; |
6240 | if (const RecordType *Record = T->getAs<RecordType>()) |
6241 | Class = cast<CXXRecordDecl>(Record->getDecl()); |
6242 | if (!Class) |
6243 | return CurInit; |
6244 | |
6245 | SourceLocation Loc = getInitializationLoc(Entity, CurInit.get()); |
6246 | |
6247 | |
6248 | if (S.RequireCompleteType(Loc, T, diag::err_temp_copy_incomplete)) |
6249 | return CurInit; |
6250 | |
6251 | |
6252 | |
6253 | |
6254 | OverloadCandidateSet CandidateSet(Loc, OverloadCandidateSet::CSK_Normal); |
6255 | DeclContext::lookup_result Ctors = S.LookupConstructors(Class); |
6256 | |
6257 | OverloadCandidateSet::iterator Best; |
6258 | switch (ResolveConstructorOverload( |
6259 | S, Loc, CurInitExpr, CandidateSet, T, Ctors, Best, |
6260 | false, true, |
6261 | false, false, |
6262 | true)) { |
6263 | case OR_Success: |
6264 | break; |
6265 | |
6266 | case OR_No_Viable_Function: |
6267 | CandidateSet.NoteCandidates( |
6268 | PartialDiagnosticAt( |
6269 | Loc, S.PDiag(IsExtraneousCopy && !S.isSFINAEContext() |
6270 | ? diag::ext_rvalue_to_reference_temp_copy_no_viable |
6271 | : diag::err_temp_copy_no_viable) |
6272 | << (int)Entity.getKind() << CurInitExpr->getType() |
6273 | << CurInitExpr->getSourceRange()), |
6274 | S, OCD_AllCandidates, CurInitExpr); |
6275 | if (!IsExtraneousCopy || S.isSFINAEContext()) |
6276 | return ExprError(); |
6277 | return CurInit; |
6278 | |
6279 | case OR_Ambiguous: |
6280 | CandidateSet.NoteCandidates( |
6281 | PartialDiagnosticAt(Loc, S.PDiag(diag::err_temp_copy_ambiguous) |
6282 | << (int)Entity.getKind() |
6283 | << CurInitExpr->getType() |
6284 | << CurInitExpr->getSourceRange()), |
6285 | S, OCD_AmbiguousCandidates, CurInitExpr); |
6286 | return ExprError(); |
6287 | |
6288 | case OR_Deleted: |
6289 | S.Diag(Loc, diag::err_temp_copy_deleted) |
6290 | << (int)Entity.getKind() << CurInitExpr->getType() |
6291 | << CurInitExpr->getSourceRange(); |
6292 | S.NoteDeletedFunction(Best->Function); |
6293 | return ExprError(); |
6294 | } |
6295 | |
6296 | bool HadMultipleCandidates = CandidateSet.size() > 1; |
6297 | |
6298 | CXXConstructorDecl *Constructor = cast<CXXConstructorDecl>(Best->Function); |
6299 | SmallVector<Expr*, 8> ConstructorArgs; |
6300 | CurInit.get(); |
6301 | |
6302 | S.CheckConstructorAccess(Loc, Constructor, Best->FoundDecl, Entity, |
6303 | IsExtraneousCopy); |
6304 | |
6305 | if (IsExtraneousCopy) { |
6306 | |
6307 | |
6308 | |
6309 | |
6310 | |
6311 | |
6312 | |
6313 | |
6314 | |
6315 | |
6316 | for (unsigned I = 1, N = Constructor->getNumParams(); I != N; ++I) { |
6317 | ParmVarDecl *Parm = Constructor->getParamDecl(I); |
6318 | if (S.RequireCompleteType(Loc, Parm->getType(), |
6319 | diag::err_call_incomplete_argument)) |
6320 | break; |
6321 | |
6322 | |
6323 | |
6324 | |
6325 | S.BuildCXXDefaultArgExpr(Loc, Constructor, Parm); |
6326 | } |
6327 | |
6328 | return CurInitExpr; |
6329 | } |
6330 | |
6331 | |
6332 | |
6333 | |
6334 | if (S.CompleteConstructorCall(Constructor, T, CurInitExpr, Loc, |
6335 | ConstructorArgs)) |
6336 | return ExprError(); |
6337 | |
6338 | |
6339 | |
6340 | |
6341 | |
6342 | |
6343 | |
6344 | |
6345 | |
6346 | |
6347 | |
6348 | |
6349 | |
6350 | |
6351 | |
6352 | |
6353 | |
6354 | |
6355 | |
6356 | |
6357 | bool Elidable = |
6358 | CurInitExpr->isTemporaryObject(S.Context, Class) && |
6359 | S.Context.hasSameUnqualifiedType( |
6360 | Best->Function->getParamDecl(0)->getType().getNonReferenceType(), |
6361 | CurInitExpr->getType()); |
6362 | |
6363 | |
6364 | CurInit = S.BuildCXXConstructExpr(Loc, T, Best->FoundDecl, Constructor, |
6365 | Elidable, |
6366 | ConstructorArgs, |
6367 | HadMultipleCandidates, |
6368 | false, |
6369 | false, |
6370 | false, |
6371 | CXXConstructExpr::CK_Complete, |
6372 | SourceRange()); |
6373 | |
6374 | |
6375 | if (!CurInit.isInvalid() && shouldBindAsTemporary(Entity)) |
6376 | CurInit = S.MaybeBindToTemporary(CurInit.getAs<Expr>()); |
6377 | return CurInit; |
6378 | } |
6379 | |
6380 | |
6381 | |
6382 | |
6383 | static void CheckCXX98CompatAccessibleCopy(Sema &S, |
6384 | const InitializedEntity &Entity, |
6385 | Expr *CurInitExpr) { |
6386 | assert(S.getLangOpts().CPlusPlus11); |
6387 | |
6388 | const RecordType *Record = CurInitExpr->getType()->getAs<RecordType>(); |
6389 | if (!Record) |
6390 | return; |
6391 | |
6392 | SourceLocation Loc = getInitializationLoc(Entity, CurInitExpr); |
6393 | if (S.Diags.isIgnored(diag::warn_cxx98_compat_temp_copy, Loc)) |
6394 | return; |
6395 | |
6396 | |
6397 | OverloadCandidateSet CandidateSet(Loc, OverloadCandidateSet::CSK_Normal); |
6398 | DeclContext::lookup_result Ctors = |
6399 | S.LookupConstructors(cast<CXXRecordDecl>(Record->getDecl())); |
6400 | |
6401 | |
6402 | OverloadCandidateSet::iterator Best; |
6403 | OverloadingResult OR = ResolveConstructorOverload( |
6404 | S, Loc, CurInitExpr, CandidateSet, CurInitExpr->getType(), Ctors, Best, |
6405 | false, true, |
6406 | false, false, |
6407 | true); |
6408 | |
6409 | PartialDiagnostic Diag = S.PDiag(diag::warn_cxx98_compat_temp_copy) |
6410 | << OR << (int)Entity.getKind() << CurInitExpr->getType() |
6411 | << CurInitExpr->getSourceRange(); |
6412 | |
6413 | switch (OR) { |
6414 | case OR_Success: |
6415 | S.CheckConstructorAccess(Loc, cast<CXXConstructorDecl>(Best->Function), |
6416 | Best->FoundDecl, Entity, Diag); |
6417 | |
6418 | break; |
6419 | |
6420 | case OR_No_Viable_Function: |
6421 | CandidateSet.NoteCandidates(PartialDiagnosticAt(Loc, Diag), S, |
6422 | OCD_AllCandidates, CurInitExpr); |
6423 | break; |
6424 | |
6425 | case OR_Ambiguous: |
6426 | CandidateSet.NoteCandidates(PartialDiagnosticAt(Loc, Diag), S, |
6427 | OCD_AmbiguousCandidates, CurInitExpr); |
6428 | break; |
6429 | |
6430 | case OR_Deleted: |
6431 | S.Diag(Loc, Diag); |
6432 | S.NoteDeletedFunction(Best->Function); |
6433 | break; |
6434 | } |
6435 | } |
6436 | |
6437 | void InitializationSequence::PrintInitLocationNote(Sema &S, |
6438 | const InitializedEntity &Entity) { |
6439 | if (Entity.isParamOrTemplateParamKind() && Entity.getDecl()) { |
6440 | if (Entity.getDecl()->getLocation().isInvalid()) |
6441 | return; |
6442 | |
6443 | if (Entity.getDecl()->getDeclName()) |
6444 | S.Diag(Entity.getDecl()->getLocation(), diag::note_parameter_named_here) |
6445 | << Entity.getDecl()->getDeclName(); |
6446 | else |
6447 | S.Diag(Entity.getDecl()->getLocation(), diag::note_parameter_here); |
6448 | } |
6449 | else if (Entity.getKind() == InitializedEntity::EK_RelatedResult && |
6450 | Entity.getMethodDecl()) |
6451 | S.Diag(Entity.getMethodDecl()->getLocation(), |
6452 | diag::note_method_return_type_change) |
6453 | << Entity.getMethodDecl()->getDeclName(); |
6454 | } |
6455 | |
6456 | |
6457 | |
6458 | static bool isExplicitTemporary(const InitializedEntity &Entity, |
6459 | const InitializationKind &Kind, |
6460 | unsigned NumArgs) { |
6461 | switch (Entity.getKind()) { |
6462 | case InitializedEntity::EK_Temporary: |
6463 | case InitializedEntity::EK_CompoundLiteralInit: |
6464 | case InitializedEntity::EK_RelatedResult: |
6465 | break; |
6466 | default: |
6467 | return false; |
6468 | } |
6469 | |
6470 | switch (Kind.getKind()) { |
6471 | case InitializationKind::IK_DirectList: |
6472 | return true; |
6473 | |
6474 | case InitializationKind::IK_Direct: |
6475 | case InitializationKind::IK_Value: |
6476 | return NumArgs != 1; |
6477 | default: |
6478 | return false; |
6479 | } |
6480 | } |
6481 | |
6482 | static ExprResult |
6483 | PerformConstructorInitialization(Sema &S, |
6484 | const InitializedEntity &Entity, |
6485 | const InitializationKind &Kind, |
6486 | MultiExprArg Args, |
6487 | const InitializationSequence::Step& Step, |
6488 | bool &ConstructorInitRequiresZeroInit, |
6489 | bool IsListInitialization, |
6490 | bool IsStdInitListInitialization, |
6491 | SourceLocation LBraceLoc, |
6492 | SourceLocation RBraceLoc) { |
6493 | unsigned NumArgs = Args.size(); |
6494 | CXXConstructorDecl *Constructor |
6495 | = cast<CXXConstructorDecl>(Step.Function.Function); |
| 25 | | Field 'Function' is a 'CXXConstructorDecl' | |
|
6496 | bool HadMultipleCandidates = Step.Function.HadMultipleCandidates; |
6497 | |
6498 | |
6499 | SmallVector<Expr*, 8> ConstructorArgs; |
6500 | SourceLocation Loc = (Kind.isCopyInit() && Kind.getEqualLoc().isValid()) |
6501 | ? Kind.getEqualLoc() |
6502 | : Kind.getLocation(); |
6503 | |
6504 | if (Kind.getKind() == InitializationKind::IK_Default) { |
| 26 | | Assuming the condition is false | |
|
| |
6505 | |
6506 | |
6507 | |
6508 | assert(Constructor->getParent() && "No parent class for constructor."); |
6509 | if (Constructor->isDefaulted() && Constructor->isDefaultConstructor() && |
6510 | Constructor->isTrivial() && !Constructor->isUsed(false)) { |
6511 | S.runWithSufficientStackSpace(Loc, [&] { |
6512 | S.DefineImplicitDefaultConstructor(Loc, Constructor); |
6513 | }); |
6514 | } |
6515 | } |
6516 | |
6517 | ExprResult CurInit((Expr *)nullptr); |
6518 | |
6519 | |
6520 | |
6521 | |
6522 | |
6523 | |
6524 | |
6525 | bool AllowExplicitConv = |
6526 | Kind.AllowExplicit() && !Kind.isCopyInit() && Args.size() == 1 && |
| 28 | | Assuming the condition is true | |
|
6527 | hasCopyOrMoveCtorParam(S.Context, |
| 37 | | Calling 'hasCopyOrMoveCtorParam' | |
|
6528 | getConstructorInfo(Step.Function.FoundDecl)); |
| 29 | | Calling 'getConstructorInfo' | |
|
| 36 | | Returning from 'getConstructorInfo' | |
|
6529 | |
6530 | |
6531 | |
6532 | if (S.CompleteConstructorCall(Constructor, Step.Type, Args, Loc, |
6533 | ConstructorArgs, AllowExplicitConv, |
6534 | IsListInitialization)) |
6535 | return ExprError(); |
6536 | |
6537 | if (isExplicitTemporary(Entity, Kind, NumArgs)) { |
6538 | |
6539 | if (S.DiagnoseUseOfDecl(Constructor, Loc)) |
6540 | return ExprError(); |
6541 | |
6542 | TypeSourceInfo *TSInfo = Entity.getTypeSourceInfo(); |
6543 | if (!TSInfo) |
6544 | TSInfo = S.Context.getTrivialTypeSourceInfo(Entity.getType(), Loc); |
6545 | SourceRange ParenOrBraceRange = |
6546 | (Kind.getKind() == InitializationKind::IK_DirectList) |
6547 | ? SourceRange(LBraceLoc, RBraceLoc) |
6548 | : Kind.getParenOrBraceRange(); |
6549 | |
6550 | CXXConstructorDecl *CalleeDecl = Constructor; |
6551 | if (auto *Shadow = dyn_cast<ConstructorUsingShadowDecl>( |
6552 | Step.Function.FoundDecl.getDecl())) { |
6553 | CalleeDecl = S.findInheritingConstructor(Loc, Constructor, Shadow); |
6554 | if (S.DiagnoseUseOfDecl(CalleeDecl, Loc)) |
6555 | return ExprError(); |
6556 | } |
6557 | S.MarkFunctionReferenced(Loc, CalleeDecl); |
6558 | |
6559 | CurInit = S.CheckForImmediateInvocation( |
6560 | CXXTemporaryObjectExpr::Create( |
6561 | S.Context, CalleeDecl, |
6562 | Entity.getType().getNonLValueExprType(S.Context), TSInfo, |
6563 | ConstructorArgs, ParenOrBraceRange, HadMultipleCandidates, |
6564 | IsListInitialization, IsStdInitListInitialization, |
6565 | ConstructorInitRequiresZeroInit), |
6566 | CalleeDecl); |
6567 | } else { |
6568 | CXXConstructExpr::ConstructionKind ConstructKind = |
6569 | CXXConstructExpr::CK_Complete; |
6570 | |
6571 | if (Entity.getKind() == InitializedEntity::EK_Base) { |
6572 | ConstructKind = Entity.getBaseSpecifier()->isVirtual() ? |
6573 | CXXConstructExpr::CK_VirtualBase : |
6574 | CXXConstructExpr::CK_NonVirtualBase; |
6575 | } else if (Entity.getKind() == InitializedEntity::EK_Delegating) { |
6576 | ConstructKind = CXXConstructExpr::CK_Delegating; |
6577 | } |
6578 | |
6579 | |
6580 | |
6581 | SourceRange ParenOrBraceRange; |
6582 | if (IsListInitialization) |
6583 | ParenOrBraceRange = SourceRange(LBraceLoc, RBraceLoc); |
6584 | else if (Kind.getKind() == InitializationKind::IK_Direct) |
6585 | ParenOrBraceRange = Kind.getParenOrBraceRange(); |
6586 | |
6587 | |
6588 | |
6589 | if (Entity.allowsNRVO()) |
6590 | CurInit = S.BuildCXXConstructExpr(Loc, Step.Type, |
6591 | Step.Function.FoundDecl, |
6592 | Constructor, true, |
6593 | ConstructorArgs, |
6594 | HadMultipleCandidates, |
6595 | IsListInitialization, |
6596 | IsStdInitListInitialization, |
6597 | ConstructorInitRequiresZeroInit, |
6598 | ConstructKind, |
6599 | ParenOrBraceRange); |
6600 | else |
6601 | CurInit = S.BuildCXXConstructExpr(Loc, Step.Type, |
6602 | Step.Function.FoundDecl, |
6603 | Constructor, |
6604 | ConstructorArgs, |
6605 | HadMultipleCandidates, |
6606 | IsListInitialization, |
6607 | IsStdInitListInitialization, |
6608 | ConstructorInitRequiresZeroInit, |
6609 | ConstructKind, |
6610 | ParenOrBraceRange); |
6611 | } |
6612 | if (CurInit.isInvalid()) |
6613 | return ExprError(); |
6614 | |
6615 | |
6616 | S.CheckConstructorAccess(Loc, Constructor, Step.Function.FoundDecl, Entity); |
6617 | if (S.DiagnoseUseOfDecl(Step.Function.FoundDecl, Loc)) |
6618 | return ExprError(); |
6619 | |
6620 | if (const ArrayType *AT = S.Context.getAsArrayType(Entity.getType())) |
6621 | if (checkDestructorReference(S.Context.getBaseElementType(AT), Loc, S)) |
6622 | return ExprError(); |
6623 | |
6624 | if (shouldBindAsTemporary(Entity)) |
6625 | CurInit = S.MaybeBindToTemporary(CurInit.get()); |
6626 | |
6627 | return CurInit; |
6628 | } |
6629 | |
6630 | namespace { |
6631 | enum LifetimeKind { |
6632 | |
6633 | |
6634 | LK_FullExpression, |
6635 | |
6636 | |
6637 | |
6638 | LK_Extended, |
6639 | |
6640 | |
6641 | |
6642 | LK_New, |
6643 | |
6644 | |
6645 | |
6646 | LK_Return, |
6647 | |
6648 | |
6649 | |
6650 | LK_StmtExprResult, |
6651 | |
6652 | |
6653 | |
6654 | LK_MemInitializer, |
6655 | }; |
6656 | using LifetimeResult = |
6657 | llvm::PointerIntPair<const InitializedEntity *, 3, LifetimeKind>; |
6658 | } |
6659 | |
6660 | |
6661 | |
6662 | |
6663 | static LifetimeResult getEntityLifetime( |
6664 | const InitializedEntity *Entity, |
6665 | const InitializedEntity *InitField = nullptr) { |
6666 | |
6667 | switch (Entity->getKind()) { |
6668 | case InitializedEntity::EK_Variable: |
6669 | |
6670 | return {Entity, LK_Extended}; |
6671 | |
6672 | case InitializedEntity::EK_Member: |
6673 | |
6674 | if (Entity->getParent()) |
6675 | return getEntityLifetime(Entity->getParent(), Entity); |
6676 | |
6677 | |
6678 | |
6679 | |
6680 | |
6681 | |
6682 | |
6683 | |
6684 | |
6685 | |
6686 | |
6687 | |
6688 | |
6689 | return {Entity, Entity->isDefaultMemberInitializer() ? LK_Extended |
6690 | : LK_MemInitializer}; |
6691 | |
6692 | case InitializedEntity::EK_Binding: |
6693 | |
6694 | |
6695 | return {Entity, LK_Extended}; |
6696 | |
6697 | case InitializedEntity::EK_Parameter: |
6698 | case InitializedEntity::EK_Parameter_CF_Audited: |
6699 | |
6700 | |
6701 | |
6702 | return {nullptr, LK_FullExpression}; |
6703 | |
6704 | case InitializedEntity::EK_TemplateParameter: |
6705 | |
6706 | return {nullptr, LK_FullExpression}; |
6707 | |
6708 | case InitializedEntity::EK_Result: |
6709 | |
6710 | |
6711 | |
6712 | return {nullptr, LK_Return}; |
6713 | |
6714 | case InitializedEntity::EK_StmtExprResult: |
6715 | |
6716 | |
6717 | return {nullptr, LK_StmtExprResult}; |
6718 | |
6719 | case InitializedEntity::EK_New: |
6720 | |
6721 | |
6722 | |
6723 | return {nullptr, LK_New}; |
6724 | |
6725 | case InitializedEntity::EK_Temporary: |
6726 | case InitializedEntity::EK_CompoundLiteralInit: |
6727 | case InitializedEntity::EK_RelatedResult: |
6728 | |
6729 | |
6730 | |
6731 | return {nullptr, LK_FullExpression}; |
6732 | |
6733 | case InitializedEntity::EK_ArrayElement: |
6734 | |
6735 | return getEntityLifetime(Entity->getParent(), InitField); |
6736 | |
6737 | case InitializedEntity::EK_Base: |
6738 | |
6739 | if (Entity->getParent()) |
6740 | return getEntityLifetime(Entity->getParent(), InitField); |
6741 | return {InitField, LK_MemInitializer}; |
6742 | |
6743 | case InitializedEntity::EK_Delegating: |
6744 | |
6745 | |
6746 | |
6747 | |
6748 | return {InitField, LK_MemInitializer}; |
6749 | |
6750 | case InitializedEntity::EK_BlockElement: |
6751 | case InitializedEntity::EK_LambdaToBlockConversionBlockElement: |
6752 | case InitializedEntity::EK_LambdaCapture: |
6753 | case InitializedEntity::EK_VectorElement: |
6754 | case InitializedEntity::EK_ComplexElement: |
6755 | return {nullptr, LK_FullExpression}; |
6756 | |
6757 | case InitializedEntity::EK_Exception: |
6758 | |
6759 | return {nullptr, LK_FullExpression}; |
6760 | } |
6761 | llvm_unreachable("unknown entity kind"); |
6762 | } |
6763 | |
6764 | namespace { |
6765 | enum ReferenceKind { |
6766 | |
6767 | RK_ReferenceBinding, |
6768 | |
6769 | |
6770 | RK_StdInitializerList, |
6771 | }; |
6772 | |
6773 | |
6774 | |
6775 | |
6776 | |
6777 | |
6778 | using Local = Expr*; |
6779 | |
6780 | |
6781 | |
6782 | |
6783 | struct IndirectLocalPathEntry { |
6784 | enum EntryKind { |
6785 | DefaultInit, |
6786 | AddressOf, |
6787 | VarInit, |
6788 | LValToRVal, |
6789 | LifetimeBoundCall, |
6790 | TemporaryCopy, |
6791 | LambdaCaptureInit, |
6792 | GslReferenceInit, |
6793 | GslPointerInit |
6794 | } Kind; |
6795 | Expr *E; |
6796 | union { |
6797 | const Decl *D = nullptr; |
6798 | const LambdaCapture *Capture; |
6799 | }; |
6800 | IndirectLocalPathEntry() {} |
6801 | IndirectLocalPathEntry(EntryKind K, Expr *E) : Kind(K), E(E) {} |
6802 | IndirectLocalPathEntry(EntryKind K, Expr *E, const Decl *D) |
6803 | : Kind(K), E(E), D(D) {} |
6804 | IndirectLocalPathEntry(EntryKind K, Expr *E, const LambdaCapture *Capture) |
6805 | : Kind(K), E(E), Capture(Capture) {} |
6806 | }; |
6807 | |
6808 | using IndirectLocalPath = llvm::SmallVectorImpl<IndirectLocalPathEntry>; |
6809 | |
6810 | struct RevertToOldSizeRAII { |
6811 | IndirectLocalPath &Path; |
6812 | unsigned OldSize = Path.size(); |
6813 | RevertToOldSizeRAII(IndirectLocalPath &Path) : Path(Path) {} |
6814 | ~RevertToOldSizeRAII() { Path.resize(OldSize); } |
6815 | }; |
6816 | |
6817 | using LocalVisitor = llvm::function_ref<bool(IndirectLocalPath &Path, Local L, |
6818 | ReferenceKind RK)>; |
6819 | } |
6820 | |
6821 | static bool isVarOnPath(IndirectLocalPath &Path, VarDecl *VD) { |
6822 | for (auto E : Path) |
6823 | if (E.Kind == IndirectLocalPathEntry::VarInit && E.D == VD) |
6824 | return true; |
6825 | return false; |
6826 | } |
6827 | |
6828 | static bool pathContainsInit(IndirectLocalPath &Path) { |
6829 | return llvm::any_of(Path, [=](IndirectLocalPathEntry E) { |
6830 | return E.Kind == IndirectLocalPathEntry::DefaultInit || |
6831 | E.Kind == IndirectLocalPathEntry::VarInit; |
6832 | }); |
6833 | } |
6834 | |
6835 | static void visitLocalsRetainedByInitializer(IndirectLocalPath &Path, |
6836 | Expr *Init, LocalVisitor Visit, |
6837 | bool RevisitSubinits, |
6838 | bool EnableLifetimeWarnings); |
6839 | |
6840 | static void visitLocalsRetainedByReferenceBinding(IndirectLocalPath &Path, |
6841 | Expr *Init, ReferenceKind RK, |
6842 | LocalVisitor Visit, |
6843 | bool EnableLifetimeWarnings); |
6844 | |
6845 | template <typename T> static bool isRecordWithAttr(QualType Type) { |
6846 | if (auto *RD = Type->getAsCXXRecordDecl()) |
6847 | return RD->hasAttr<T>(); |
6848 | return false; |
6849 | } |
6850 | |
6851 | |
6852 | |
6853 | |
6854 | static bool isInStlNamespace(const Decl *D) { |
6855 | const DeclContext *DC = D->getDeclContext(); |
6856 | if (!DC) |
6857 | return false; |
6858 | if (const auto *ND = dyn_cast<NamespaceDecl>(DC)) |
6859 | if (const IdentifierInfo *II = ND->getIdentifier()) { |
6860 | StringRef Name = II->getName(); |
6861 | if (Name.size() >= 2 && Name.front() == '_' && |
6862 | (Name[1] == '_' || isUppercase(Name[1]))) |
6863 | return true; |
6864 | } |
6865 | |
6866 | return DC->isStdNamespace(); |
6867 | } |
6868 | |
6869 | static bool shouldTrackImplicitObjectArg(const CXXMethodDecl *Callee) { |
6870 | if (auto *Conv = dyn_cast_or_null<CXXConversionDecl>(Callee)) |
6871 | if (isRecordWithAttr<PointerAttr>(Conv->getConversionType())) |
6872 | return true; |
6873 | if (!isInStlNamespace(Callee->getParent())) |
6874 | return false; |
6875 | if (!isRecordWithAttr<PointerAttr>(Callee->getThisObjectType()) && |
6876 | !isRecordWithAttr<OwnerAttr>(Callee->getThisObjectType())) |
6877 | return false; |
6878 | if (Callee->getReturnType()->isPointerType() || |
6879 | isRecordWithAttr<PointerAttr>(Callee->getReturnType())) { |
6880 | if (!Callee->getIdentifier()) |
6881 | return false; |
6882 | return llvm::StringSwitch<bool>(Callee->getName()) |
6883 | .Cases("begin", "rbegin", "cbegin", "crbegin", true) |
6884 | .Cases("end", "rend", "cend", "crend", true) |
6885 | .Cases("c_str", "data", "get", true) |
6886 | |
6887 | .Cases("find", "equal_range", "lower_bound", "upper_bound", true) |
6888 | .Default(false); |
6889 | } else if (Callee->getReturnType()->isReferenceType()) { |
6890 | if (!Callee->getIdentifier()) { |
6891 | auto OO = Callee->getOverloadedOperator(); |
6892 | return OO == OverloadedOperatorKind::OO_Subscript || |
6893 | OO == OverloadedOperatorKind::OO_Star; |
6894 | } |
6895 | return llvm::StringSwitch<bool>(Callee->getName()) |
6896 | .Cases("front", "back", "at", "top", "value", true) |
6897 | .Default(false); |
6898 | } |
6899 | return false; |
6900 | } |
6901 | |
6902 | static bool shouldTrackFirstArgument(const FunctionDecl *FD) { |
6903 | if (!FD->getIdentifier() || FD->getNumParams() != 1) |
6904 | return false; |
6905 | const auto *RD = FD->getParamDecl(0)->getType()->getPointeeCXXRecordDecl(); |
6906 | if (!FD->isInStdNamespace() || !RD || !RD->isInStdNamespace()) |
6907 | return false; |
6908 | if (!isRecordWithAttr<PointerAttr>(QualType(RD->getTypeForDecl(), 0)) && |
6909 | !isRecordWithAttr<OwnerAttr>(QualType(RD->getTypeForDecl(), 0))) |
6910 | return false; |
6911 | if (FD->getReturnType()->isPointerType() || |
6912 | isRecordWithAttr<PointerAttr>(FD->getReturnType())) { |
6913 | return llvm::StringSwitch<bool>(FD->getName()) |
6914 | .Cases("begin", "rbegin", "cbegin", "crbegin", true) |
6915 | .Cases("end", "rend", "cend", "crend", true) |
6916 | .Case("data", true) |
6917 | .Default(false); |
6918 | } else if (FD->getReturnType()->isReferenceType()) { |
6919 | return llvm::StringSwitch<bool>(FD->getName()) |
6920 | .Cases("get", "any_cast", true) |
6921 | .Default(false); |
6922 | } |
6923 | return false; |
6924 | } |
6925 | |
6926 | static void handleGslAnnotatedTypes(IndirectLocalPath &Path, Expr *Call, |
6927 | LocalVisitor Visit) { |
6928 | auto VisitPointerArg = [&](const Decl *D, Expr *Arg, bool Value) { |
6929 | |
6930 | |
6931 | if (isa<MemberExpr>(Arg->IgnoreImpCasts())) |
6932 | return; |
6933 | |
6934 | if (!Value) { |
6935 | for (auto It = Path.rbegin(), End = Path.rend(); It != End; ++It) { |
6936 | if (It->Kind == IndirectLocalPathEntry::GslReferenceInit) |
6937 | continue; |
6938 | if (It->Kind == IndirectLocalPathEntry::GslPointerInit) |
6939 | return; |
6940 | break; |
6941 | } |
6942 | } |
6943 | Path.push_back({Value ? IndirectLocalPathEntry::GslPointerInit |
6944 | : IndirectLocalPathEntry::GslReferenceInit, |
6945 | Arg, D}); |
6946 | if (Arg->isGLValue()) |
6947 | visitLocalsRetainedByReferenceBinding(Path, Arg, RK_ReferenceBinding, |
6948 | Visit, |
6949 | true); |
6950 | else |
6951 | visitLocalsRetainedByInitializer(Path, Arg, Visit, true, |
6952 | true); |
6953 | Path.pop_back(); |
6954 | }; |
6955 | |
6956 | if (auto *MCE = dyn_cast<CXXMemberCallExpr>(Call)) { |
6957 | const auto *MD = cast_or_null<CXXMethodDecl>(MCE->getDirectCallee()); |
6958 | if (MD && shouldTrackImplicitObjectArg(MD)) |
6959 | VisitPointerArg(MD, MCE->getImplicitObjectArgument(), |
6960 | !MD->getReturnType()->isReferenceType()); |
6961 | return; |
6962 | } else if (auto *OCE = dyn_cast<CXXOperatorCallExpr>(Call)) { |
6963 | FunctionDecl *Callee = OCE->getDirectCallee(); |
6964 | if (Callee && Callee->isCXXInstanceMember() && |
6965 | shouldTrackImplicitObjectArg(cast<CXXMethodDecl>(Callee))) |
6966 | VisitPointerArg(Callee, OCE->getArg(0), |
6967 | !Callee->getReturnType()->isReferenceType()); |
6968 | return; |
6969 | } else if (auto *CE = dyn_cast<CallExpr>(Call)) { |
6970 | FunctionDecl *Callee = CE->getDirectCallee(); |
6971 | if (Callee && shouldTrackFirstArgument(Callee)) |
6972 | VisitPointerArg(Callee, CE->getArg(0), |
6973 | !Callee->getReturnType()->isReferenceType()); |
6974 | return; |
6975 | } |
6976 | |
6977 | if (auto *CCE = dyn_cast<CXXConstructExpr>(Call)) { |
6978 | const auto *Ctor = CCE->getConstructor(); |
6979 | const CXXRecordDecl *RD = Ctor->getParent(); |
6980 | if (CCE->getNumArgs() > 0 && RD->hasAttr<PointerAttr>()) |
6981 | VisitPointerArg(Ctor->getParamDecl(0), CCE->getArgs()[0], true); |
6982 | } |
6983 | } |
6984 | |
6985 | static bool implicitObjectParamIsLifetimeBound(const FunctionDecl *FD) { |
6986 | const TypeSourceInfo *TSI = FD->getTypeSourceInfo(); |
6987 | if (!TSI) |
6988 | return false; |
6989 | |
6990 | |
6991 | |
6992 | AttributedTypeLoc ATL; |
6993 | for (TypeLoc TL = TSI->getTypeLoc(); |
6994 | (ATL = TL.getAsAdjusted<AttributedTypeLoc>()); |
6995 | TL = ATL.getModifiedLoc()) { |
6996 | if (ATL.getAttrAs<LifetimeBoundAttr>()) |
6997 | return true; |
6998 | } |
6999 | |
7000 | |
7001 | |
7002 | |
7003 | OverloadedOperatorKind OO = FD->getDeclName().getCXXOverloadedOperator(); |
7004 | if (OO == OO_Equal || isCompoundAssignmentOperator(OO)) { |
7005 | QualType RetT = FD->getReturnType(); |
7006 | if (RetT->isLValueReferenceType()) { |
7007 | ASTContext &Ctx = FD->getASTContext(); |
7008 | QualType LHST; |
7009 | auto *MD = dyn_cast<CXXMethodDecl>(FD); |
7010 | if (MD && MD->isCXXInstanceMember()) |
7011 | LHST = Ctx.getLValueReferenceType(MD->getThisObjectType()); |
7012 | else |
7013 | LHST = MD->getParamDecl(0)->getType(); |
7014 | if (Ctx.hasSameType(RetT, LHST)) |
7015 | return true; |
7016 | } |
7017 | } |
7018 | |
7019 | return false; |
7020 | } |
7021 | |
7022 | static void visitLifetimeBoundArguments(IndirectLocalPath &Path, Expr *Call, |
7023 | LocalVisitor Visit) { |
7024 | const FunctionDecl *Callee; |
7025 | ArrayRef<Expr*> Args; |
7026 | |
7027 | if (auto *CE = dyn_cast<CallExpr>(Call)) { |
7028 | Callee = CE->getDirectCallee(); |
7029 | Args = llvm::makeArrayRef(CE->getArgs(), CE->getNumArgs()); |
7030 | } else { |
7031 | auto *CCE = cast<CXXConstructExpr>(Call); |
7032 | Callee = CCE->getConstructor(); |
7033 | Args = llvm::makeArrayRef(CCE->getArgs(), CCE->getNumArgs()); |
7034 | } |
7035 | if (!Callee) |
7036 | return; |
7037 | |
7038 | Expr *ObjectArg = nullptr; |
7039 | if (isa<CXXOperatorCallExpr>(Call) && Callee->isCXXInstanceMember()) { |
7040 | ObjectArg = Args[0]; |
7041 | Args = Args.slice(1); |
7042 | } else if (auto *MCE = dyn_cast<CXXMemberCallExpr>(Call)) { |
7043 | ObjectArg = MCE->getImplicitObjectArgument(); |
7044 | } |
7045 | |
7046 | auto VisitLifetimeBoundArg = [&](const Decl *D, Expr *Arg) { |
7047 | Path.push_back({IndirectLocalPathEntry::LifetimeBoundCall, Arg, D}); |
7048 | if (Arg->isGLValue()) |
7049 | visitLocalsRetainedByReferenceBinding(Path, Arg, RK_ReferenceBinding, |
7050 | Visit, |
7051 | false); |
7052 | else |
7053 | visitLocalsRetainedByInitializer(Path, Arg, Visit, true, |
7054 | false); |
7055 | Path.pop_back(); |
7056 | }; |
7057 | |
7058 | if (ObjectArg && implicitObjectParamIsLifetimeBound(Callee)) |
7059 | VisitLifetimeBoundArg(Callee, ObjectArg); |
7060 | |
7061 | for (unsigned I = 0, |
7062 | N = std::min<unsigned>(Callee->getNumParams(), Args.size()); |
7063 | I != N; ++I) { |
7064 | if (Callee->getParamDecl(I)->hasAttr<LifetimeBoundAttr>()) |
7065 | VisitLifetimeBoundArg(Callee->getParamDecl(I), Args[I]); |
7066 | } |
7067 | } |
7068 | |
7069 | |
7070 | |
7071 | static void visitLocalsRetainedByReferenceBinding(IndirectLocalPath &Path, |
7072 | Expr *Init, ReferenceKind RK, |
7073 | LocalVisitor Visit, |
7074 | bool EnableLifetimeWarnings) { |
7075 | RevertToOldSizeRAII RAII(Path); |
7076 | |
7077 | |
7078 | Expr *Old; |
7079 | do { |
7080 | Old = Init; |
7081 | |
7082 | if (auto *FE = dyn_cast<FullExpr>(Init)) |
7083 | Init = FE->getSubExpr(); |
7084 | |
7085 | if (InitListExpr *ILE = dyn_cast<InitListExpr>(Init)) { |
7086 | |
7087 | if (ILE->isTransparent()) |
7088 | Init = ILE->getInit(0); |
7089 | } |
7090 | |
7091 | |
7092 | |
7093 | Init = const_cast<Expr *>(Init->skipRValueSubobjectAdjustments()); |
7094 | |
7095 | |
7096 | |
7097 | if (CastExpr *CE = dyn_cast<CastExpr>(Init)) |
7098 | if (CE->getSubExpr()->isGLValue()) |
7099 | Init = CE->getSubExpr(); |
7100 | |
7101 | |
7102 | |
7103 | if (auto *ASE = dyn_cast<ArraySubscriptExpr>(Init)) { |
7104 | Init = ASE->getBase(); |
7105 | auto *ICE = dyn_cast<ImplicitCastExpr>(Init); |
7106 | if (ICE && ICE->getCastKind() == CK_ArrayToPointerDecay) |
7107 | Init = ICE->getSubExpr(); |
7108 | else |
7109 | |
7110 | |
7111 | return visitLocalsRetainedByInitializer(Path, Init, Visit, true, |
7112 | EnableLifetimeWarnings); |
7113 | } |
7114 | |
7115 | |
7116 | |
7117 | if (auto *DIE = dyn_cast<CXXDefaultInitExpr>(Init)) { |
7118 | Path.push_back( |
7119 | {IndirectLocalPathEntry::DefaultInit, DIE, DIE->getField()}); |
7120 | Init = DIE->getExpr(); |
7121 | } |
7122 | } while (Init != Old); |
7123 | |
7124 | if (auto *MTE = dyn_cast<MaterializeTemporaryExpr>(Init)) { |
7125 | if (Visit(Path, Local(MTE), RK)) |
7126 | visitLocalsRetainedByInitializer(Path, MTE->getSubExpr(), Visit, true, |
7127 | EnableLifetimeWarnings); |
7128 | } |
7129 | |
7130 | if (isa<CallExpr>(Init)) { |
7131 | if (EnableLifetimeWarnings) |
7132 | handleGslAnnotatedTypes(Path, Init, Visit); |
7133 | return visitLifetimeBoundArguments(Path, Init, Visit); |
7134 | } |
7135 | |
7136 | switch (Init->getStmtClass()) { |
7137 | case Stmt::DeclRefExprClass: { |
7138 | |
7139 | |
7140 | auto *DRE = cast<DeclRefExpr>(Init); |
7141 | auto *VD = dyn_cast<VarDecl>(DRE->getDecl()); |
7142 | if (VD && VD->hasLocalStorage() && |
7143 | !DRE->refersToEnclosingVariableOrCapture()) { |
7144 | if (!VD->getType()->isReferenceType()) { |
7145 | Visit(Path, Local(DRE), RK); |
7146 | } else if (isa<ParmVarDecl>(DRE->getDecl())) { |
7147 | |
7148 | |
7149 | break; |
7150 | } else if (VD->getInit() && !isVarOnPath(Path, VD)) { |
7151 | Path.push_back({IndirectLocalPathEntry::VarInit, DRE, VD}); |
7152 | visitLocalsRetainedByReferenceBinding(Path, VD->getInit(), |
7153 | RK_ReferenceBinding, Visit, |
7154 | EnableLifetimeWarnings); |
7155 | } |
7156 | } |
7157 | break; |
7158 | } |
7159 | |
7160 | case Stmt::UnaryOperatorClass: { |
7161 | |
7162 | |
7163 | |
7164 | const UnaryOperator *U = cast<UnaryOperator>(Init); |
7165 | if (U->getOpcode() == UO_Deref) |
7166 | visitLocalsRetainedByInitializer(Path, U->getSubExpr(), Visit, true, |
7167 | EnableLifetimeWarnings); |
7168 | break; |
7169 | } |
7170 | |
7171 | case Stmt::OMPArraySectionExprClass: { |
7172 | visitLocalsRetainedByInitializer(Path, |
7173 | cast<OMPArraySectionExpr>(Init)->getBase(), |
7174 | Visit, true, EnableLifetimeWarnings); |
7175 | break; |
7176 | } |
7177 | |
7178 | case Stmt::ConditionalOperatorClass: |
7179 | case Stmt::BinaryConditionalOperatorClass: { |
7180 | auto *C = cast<AbstractConditionalOperator>(Init); |
7181 | if (!C->getTrueExpr()->getType()->isVoidType()) |
7182 | visitLocalsRetainedByReferenceBinding(Path, C->getTrueExpr(), RK, Visit, |
7183 | EnableLifetimeWarnings); |
7184 | if (!C->getFalseExpr()->getType()->isVoidType()) |
7185 | visitLocalsRetainedByReferenceBinding(Path, C->getFalseExpr(), RK, Visit, |
7186 | EnableLifetimeWarnings); |
7187 | break; |
7188 | } |
7189 | |
7190 | |
7191 | |
7192 | default: |
7193 | break; |
7194 | } |
7195 | } |
7196 | |
7197 | |
7198 | |
7199 | static void visitLocalsRetainedByInitializer(IndirectLocalPath &Path, |
7200 | Expr *Init, LocalVisitor Visit, |
7201 | bool RevisitSubinits, |
7202 | bool EnableLifetimeWarnings) { |
7203 | RevertToOldSizeRAII RAII(Path); |
7204 | |
7205 | Expr *Old; |
7206 | do { |
7207 | Old = Init; |
7208 | |
7209 | |
7210 | |
7211 | if (auto *DIE = dyn_cast<CXXDefaultInitExpr>(Init)) { |
7212 | Path.push_back({IndirectLocalPathEntry::DefaultInit, DIE, DIE->getField()}); |
7213 | Init = DIE->getExpr(); |
7214 | } |
7215 | |
7216 | if (auto *FE = dyn_cast<FullExpr>(Init)) |
7217 | Init = FE->getSubExpr(); |
7218 | |
7219 | |
7220 | Init = const_cast<Expr *>(Init->skipRValueSubobjectAdjustments()); |
7221 | |
7222 | if (CXXBindTemporaryExpr *BTE = dyn_cast<CXXBindTemporaryExpr>(Init)) |
7223 | Init = BTE->getSubExpr(); |
7224 | |
7225 | Init = Init->IgnoreParens(); |
7226 | |
7227 | |
7228 | if (auto *CE = dyn_cast<CastExpr>(Init)) { |
7229 | switch (CE->getCastKind()) { |
7230 | case CK_LValueToRValue: |
7231 | |
7232 | |
7233 | Path.push_back({IndirectLocalPathEntry::LValToRVal, CE}); |
7234 | return visitLocalsRetainedByReferenceBinding( |
7235 | Path, Init, RK_ReferenceBinding, |
7236 | [&](IndirectLocalPath &Path, Local L, ReferenceKind RK) -> bool { |
7237 | if (auto *DRE = dyn_cast<DeclRefExpr>(L)) { |
7238 | auto *VD = dyn_cast<VarDecl>(DRE->getDecl()); |
7239 | if (VD && VD->getType().isConstQualified() && VD->getInit() && |
7240 | !isVarOnPath(Path, VD)) { |
7241 | Path.push_back({IndirectLocalPathEntry::VarInit, DRE, VD}); |
7242 | visitLocalsRetainedByInitializer(Path, VD->getInit(), Visit, true, |
7243 | EnableLifetimeWarnings); |
7244 | } |
7245 | } else if (auto *MTE = dyn_cast<MaterializeTemporaryExpr>(L)) { |
7246 | if (MTE->getType().isConstQualified()) |
7247 | visitLocalsRetainedByInitializer(Path, MTE->getSubExpr(), Visit, |
7248 | true, EnableLifetimeWarnings); |
7249 | } |
7250 | return false; |
7251 | }, EnableLifetimeWarnings); |
7252 | |
7253 | |
7254 | |
7255 | |
7256 | |
7257 | case CK_NoOp: |
7258 | case CK_BitCast: |
7259 | case CK_BaseToDerived: |
7260 | case CK_DerivedToBase: |
7261 | case CK_UncheckedDerivedToBase: |
7262 | case CK_Dynamic: |
7263 | case CK_ToUnion: |
7264 | case CK_UserDefinedConversion: |
7265 | case CK_ConstructorConversion: |
7266 | case CK_IntegralToPointer: |
7267 | case CK_PointerToIntegral: |
7268 | case CK_VectorSplat: |
7269 | case CK_IntegralCast: |
7270 | case CK_CPointerToObjCPointerCast: |
7271 | case CK_BlockPointerToObjCPointerCast: |
7272 | case CK_AnyPointerToBlockPointerCast: |
7273 | case CK_AddressSpaceConversion: |
7274 | break; |
7275 | |
7276 | case CK_ArrayToPointerDecay: |
7277 | |
7278 | |
7279 | Path.push_back({IndirectLocalPathEntry::AddressOf, CE}); |
7280 | return visitLocalsRetainedByReferenceBinding(Path, CE->getSubExpr(), |
7281 | RK_ReferenceBinding, Visit, |
7282 | EnableLifetimeWarnings); |
7283 | |
7284 | default: |
7285 | return; |
7286 | } |
7287 | |
7288 | Init = CE->getSubExpr(); |
7289 | } |
7290 | } while (Old != Init); |
7291 | |
7292 | |
7293 | |
7294 | |
7295 | if (auto *ILE = dyn_cast<CXXStdInitializerListExpr>(Init)) |
7296 | return visitLocalsRetainedByReferenceBinding(Path, ILE->getSubExpr(), |
7297 | RK_StdInitializerList, Visit, |
7298 | EnableLifetimeWarnings); |
7299 | |
7300 | if (InitListExpr *ILE = dyn_cast<InitListExpr>(Init)) { |
7301 | |
7302 | |
7303 | |
7304 | if (!RevisitSubinits) |
7305 | return; |
7306 | |
7307 | if (ILE->isTransparent()) |
7308 | return visitLocalsRetainedByInitializer(Path, ILE->getInit(0), Visit, |
7309 | RevisitSubinits, |
7310 | EnableLifetimeWarnings); |
7311 | |
7312 | if (ILE->getType()->isArrayType()) { |
7313 | for (unsigned I = 0, N = ILE->getNumInits(); I != N; ++I) |
7314 | visitLocalsRetainedByInitializer(Path, ILE->getInit(I), Visit, |
7315 | RevisitSubinits, |
7316 | EnableLifetimeWarnings); |
7317 | return; |
7318 | } |
7319 | |
7320 | if (CXXRecordDecl *RD = ILE->getType()->getAsCXXRecordDecl()) { |
7321 | assert(RD->isAggregate() && "aggregate init on non-aggregate"); |
7322 | |
7323 | |
7324 | |
7325 | |
7326 | if (RD->isUnion() && ILE->getInitializedFieldInUnion() && |
7327 | ILE->getInitializedFieldInUnion()->getType()->isReferenceType()) |
7328 | visitLocalsRetainedByReferenceBinding(Path, ILE->getInit(0), |
7329 | RK_ReferenceBinding, Visit, |
7330 | EnableLifetimeWarnings); |
7331 | else { |
7332 | unsigned Index = 0; |
7333 | for (; Index < RD->getNumBases() && Index < ILE->getNumInits(); ++Index) |
7334 | visitLocalsRetainedByInitializer(Path, ILE->getInit(Index), Visit, |
7335 | RevisitSubinits, |
7336 | EnableLifetimeWarnings); |
7337 | for (const auto *I : RD->fields()) { |
7338 | if (Index >= ILE->getNumInits()) |
7339 | break; |
7340 | if (I->isUnnamedBitfield()) |
7341 | continue; |
7342 | Expr *SubInit = ILE->getInit(Index); |
7343 | if (I->getType()->isReferenceType()) |
7344 | visitLocalsRetainedByReferenceBinding(Path, SubInit, |
7345 | RK_ReferenceBinding, Visit, |
7346 | EnableLifetimeWarnings); |
7347 | else |
7348 | |
7349 | |
7350 | |
7351 | visitLocalsRetainedByInitializer(Path, SubInit, Visit, |
7352 | RevisitSubinits, |
7353 | EnableLifetimeWarnings); |
7354 | ++Index; |
7355 | } |
7356 | } |
7357 | } |
7358 | return; |
7359 | } |
7360 | |
7361 | |
7362 | |
7363 | if (auto *LE = dyn_cast<LambdaExpr>(Init)) { |
7364 | LambdaExpr::capture_iterator CapI = LE->capture_begin(); |
7365 | for (Expr *E : LE->capture_inits()) { |
7366 | assert(CapI != LE->capture_end()); |
7367 | const LambdaCapture &Cap = *CapI++; |
7368 | if (!E) |
7369 | continue; |
7370 | if (Cap.capturesVariable()) |
7371 | Path.push_back({IndirectLocalPathEntry::LambdaCaptureInit, E, &Cap}); |
7372 | if (E->isGLValue()) |
7373 | visitLocalsRetainedByReferenceBinding(Path, E, RK_ReferenceBinding, |
7374 | Visit, EnableLifetimeWarnings); |
7375 | else |
7376 | visitLocalsRetainedByInitializer(Path, E, Visit, true, |
7377 | EnableLifetimeWarnings); |
7378 | if (Cap.capturesVariable()) |
7379 | Path.pop_back(); |
7380 | } |
7381 | } |
7382 | |
7383 | |
7384 | |
7385 | if (auto *CCE = dyn_cast<CXXConstructExpr>(Init)) { |
7386 | if (CCE->getConstructor()->isCopyOrMoveConstructor()) { |
7387 | if (auto *MTE = dyn_cast<MaterializeTemporaryExpr>(CCE->getArg(0))) { |
7388 | Expr *Arg = MTE->getSubExpr(); |
7389 | Path.push_back({IndirectLocalPathEntry::TemporaryCopy, Arg, |
7390 | CCE->getConstructor()}); |
7391 | visitLocalsRetainedByInitializer(Path, Arg, Visit, true, |
7392 | false); |
7393 | Path.pop_back(); |
7394 | } |
7395 | } |
7396 | } |
7397 | |
7398 | if (isa<CallExpr>(Init) || isa<CXXConstructExpr>(Init)) { |
7399 | if (EnableLifetimeWarnings) |
7400 | handleGslAnnotatedTypes(Path, Init, Visit); |
7401 | return visitLifetimeBoundArguments(Path, Init, Visit); |
7402 | } |
7403 | |
7404 | switch (Init->getStmtClass()) { |
7405 | case Stmt::UnaryOperatorClass: { |
7406 | auto *UO = cast<UnaryOperator>(Init); |
7407 | |
7408 | |
7409 | if (UO->getOpcode() == UO_AddrOf) { |
7410 | |
7411 | |
7412 | |
7413 | if (isa<MaterializeTemporaryExpr>(UO->getSubExpr())) |
7414 | return; |
7415 | |
7416 | Path.push_back({IndirectLocalPathEntry::AddressOf, UO}); |
7417 | visitLocalsRetainedByReferenceBinding(Path, UO->getSubExpr(), |
7418 | RK_ReferenceBinding, Visit, |
7419 | EnableLifetimeWarnings); |
7420 | } |
7421 | break; |
7422 | } |
7423 | |
7424 | case Stmt::BinaryOperatorClass: { |
7425 | |
7426 | auto *BO = cast<BinaryOperator>(Init); |
7427 | BinaryOperatorKind BOK = BO->getOpcode(); |
7428 | if (!BO->getType()->isPointerType() || (BOK != BO_Add && BOK != BO_Sub)) |
7429 | break; |
7430 | |
7431 | if (BO->getLHS()->getType()->isPointerType()) |
7432 | visitLocalsRetainedByInitializer(Path, BO->getLHS(), Visit, true, |
7433 | EnableLifetimeWarnings); |
7434 | else if (BO->getRHS()->getType()->isPointerType()) |
7435 | visitLocalsRetainedByInitializer(Path, BO->getRHS(), Visit, true, |
7436 | EnableLifetimeWarnings); |
7437 | break; |
7438 | } |
7439 | |
7440 | case Stmt::ConditionalOperatorClass: |
7441 | case Stmt::BinaryConditionalOperatorClass: { |
7442 | auto *C = cast<AbstractConditionalOperator>(Init); |
7443 | |
7444 | |
7445 | if (!C->getTrueExpr()->getType()->isVoidType()) |
7446 | visitLocalsRetainedByInitializer(Path, C->getTrueExpr(), Visit, true, |
7447 | EnableLifetimeWarnings); |
7448 | if (!C->getFalseExpr()->getType()->isVoidType()) |
7449 | visitLocalsRetainedByInitializer(Path, C->getFalseExpr(), Visit, true, |
7450 | EnableLifetimeWarnings); |
7451 | break; |
7452 | } |
7453 | |
7454 | case Stmt::BlockExprClass: |
7455 | if (cast<BlockExpr>(Init)->getBlockDecl()->hasCaptures()) { |
7456 | |
7457 | Visit(Path, Local(cast<BlockExpr>(Init)), RK_ReferenceBinding); |
7458 | } |
7459 | break; |
7460 | |
7461 | case Stmt::AddrLabelExprClass: |
7462 | |
7463 | Visit(Path, Local(cast<AddrLabelExpr>(Init)), RK_ReferenceBinding); |
7464 | break; |
7465 | |
7466 | default: |
7467 | break; |
7468 | } |
7469 | } |
7470 | |
7471 | |
7472 | enum PathLifetimeKind { |
7473 | |
7474 | Extend, |
7475 | |
7476 | |
7477 | |
7478 | |
7479 | ShouldExtend, |
7480 | |
7481 | NoExtend |
7482 | }; |
7483 | |
7484 | |
7485 | |
7486 | static PathLifetimeKind |
7487 | shouldLifetimeExtendThroughPath(const IndirectLocalPath &Path) { |
7488 | PathLifetimeKind Kind = PathLifetimeKind::Extend; |
7489 | for (auto Elem : Path) { |
7490 | if (Elem.Kind == IndirectLocalPathEntry::DefaultInit) |
7491 | Kind = PathLifetimeKind::ShouldExtend; |
7492 | else if (Elem.Kind != IndirectLocalPathEntry::LambdaCaptureInit) |
7493 | return PathLifetimeKind::NoExtend; |
7494 | } |
7495 | return Kind; |
7496 | } |
7497 | |
7498 | |
7499 | static SourceRange nextPathEntryRange(const IndirectLocalPath &Path, unsigned I, |
7500 | Expr *E) { |
7501 | for (unsigned N = Path.size(); I != N; ++I) { |
7502 | switch (Path[I].Kind) { |
7503 | case IndirectLocalPathEntry::AddressOf: |
7504 | case IndirectLocalPathEntry::LValToRVal: |
7505 | case IndirectLocalPathEntry::LifetimeBoundCall: |
7506 | case IndirectLocalPathEntry::TemporaryCopy: |
7507 | case IndirectLocalPathEntry::GslReferenceInit: |
7508 | case IndirectLocalPathEntry::GslPointerInit: |
7509 | |
7510 | |
7511 | break; |
7512 | |
7513 | case IndirectLocalPathEntry::VarInit: |
7514 | if (cast<VarDecl>(Path[I].D)->isImplicit()) |
7515 | return SourceRange(); |
7516 | LLVM_FALLTHROUGH; |
7517 | case IndirectLocalPathEntry::DefaultInit: |
7518 | return Path[I].E->getSourceRange(); |
7519 | |
7520 | case IndirectLocalPathEntry::LambdaCaptureInit: |
7521 | if (!Path[I].Capture->capturesVariable()) |
7522 | continue; |
7523 | return Path[I].E->getSourceRange(); |
7524 | } |
7525 | } |
7526 | return E->getSourceRange(); |
7527 | } |
7528 | |
7529 | static bool pathOnlyInitializesGslPointer(IndirectLocalPath &Path) { |
7530 | for (auto It = Path.rbegin(), End = Path.rend(); It != End; ++It) { |
7531 | if (It->Kind == IndirectLocalPathEntry::VarInit) |
7532 | continue; |
7533 | if (It->Kind == IndirectLocalPathEntry::AddressOf) |
7534 | continue; |
7535 | if (It->Kind == IndirectLocalPathEntry::LifetimeBoundCall) |
7536 | continue; |
7537 | return It->Kind == IndirectLocalPathEntry::GslPointerInit || |
7538 | It->Kind == IndirectLocalPathEntry::GslReferenceInit; |
7539 | } |
7540 | return false; |
7541 | } |
7542 | |
7543 | void Sema::checkInitializerLifetime(const InitializedEntity &Entity, |
7544 | Expr *Init) { |
7545 | LifetimeResult LR = getEntityLifetime(&Entity); |
7546 | LifetimeKind LK = LR.getInt(); |
7547 | const InitializedEntity *ExtendingEntity = LR.getPointer(); |
7548 | |
7549 | |
7550 | |
7551 | if (LK == LK_FullExpression) |
7552 | return; |
7553 | |
7554 | auto TemporaryVisitor = [&](IndirectLocalPath &Path, Local L, |
7555 | ReferenceKind RK) -> bool { |
7556 | SourceRange DiagRange = nextPathEntryRange(Path, 0, L); |
7557 | SourceLocation DiagLoc = DiagRange.getBegin(); |
7558 | |
7559 | auto *MTE = dyn_cast<MaterializeTemporaryExpr>(L); |
7560 | |
7561 | bool IsGslPtrInitWithGslTempOwner = false; |
7562 | bool IsLocalGslOwner = false; |
7563 | if (pathOnlyInitializesGslPointer(Path)) { |
7564 | if (isa<DeclRefExpr>(L)) { |
7565 | |
7566 | |
7567 | |
7568 | |
7569 | |
7570 | IsLocalGslOwner = isRecordWithAttr<OwnerAttr>(L->getType()); |
7571 | if (pathContainsInit(Path) || !IsLocalGslOwner) |
7572 | return false; |
7573 | } else { |
7574 | IsGslPtrInitWithGslTempOwner = MTE && !MTE->getExtendingDecl() && |
7575 | isRecordWithAttr<OwnerAttr>(MTE->getType()); |
7576 | |
7577 | |
7578 | |
7579 | if (!IsGslPtrInitWithGslTempOwner) |
7580 | return true; |
7581 | } |
7582 | } |
7583 | |
7584 | switch (LK) { |
7585 | case LK_FullExpression: |
7586 | llvm_unreachable("already handled this"); |
7587 | |
7588 | case LK_Extended: { |
7589 | if (!MTE) { |
7590 | |
7591 | |
7592 | |
7593 | |
7594 | |
7595 | return false; |
7596 | } |
7597 | |
7598 | if (IsGslPtrInitWithGslTempOwner && DiagLoc.isValid()) { |
7599 | Diag(DiagLoc, diag::warn_dangling_lifetime_pointer) << DiagRange; |
7600 | return false; |
7601 | } |
7602 | |
7603 | switch (shouldLifetimeExtendThroughPath(Path)) { |
7604 | case PathLifetimeKind::Extend: |
7605 | |
7606 | |
7607 | MTE->setExtendingDecl(ExtendingEntity->getDecl(), |
7608 | ExtendingEntity->allocateManglingNumber()); |
7609 | |
7610 | return true; |
7611 | |
7612 | case PathLifetimeKind::ShouldExtend: |
7613 | |
7614 | |
7615 | |
7616 | |
7617 | |
7618 | |
7619 | Diag(DiagLoc, diag::warn_unsupported_lifetime_extension) |
7620 | << RK << DiagRange; |
7621 | break; |
7622 | |
7623 | case PathLifetimeKind::NoExtend: |
7624 | |
7625 | |
7626 | |
7627 | if (pathContainsInit(Path)) |
7628 | return false; |
7629 | |
7630 | Diag(DiagLoc, diag::warn_dangling_variable) |
7631 | << RK << !Entity.getParent() |
7632 | << ExtendingEntity->getDecl()->isImplicit() |
7633 | << ExtendingEntity->getDecl() << Init->isGLValue() << DiagRange; |
7634 | break; |
7635 | } |
7636 | break; |
7637 | } |
7638 | |
7639 | case LK_MemInitializer: { |
7640 | if (isa<MaterializeTemporaryExpr>(L)) { |
7641 | |
7642 | |
7643 | |
7644 | if (auto *ExtendingDecl = |
7645 | ExtendingEntity ? ExtendingEntity->getDecl() : nullptr) { |
7646 | if (IsGslPtrInitWithGslTempOwner) { |
7647 | Diag(DiagLoc, diag::warn_dangling_lifetime_pointer_member) |
7648 | << ExtendingDecl << DiagRange; |
7649 | Diag(ExtendingDecl->getLocation(), |
7650 | diag::note_ref_or_ptr_member_declared_here) |
7651 | << true; |
7652 | return false; |
7653 | } |
7654 | bool IsSubobjectMember = ExtendingEntity != &Entity; |
7655 | Diag(DiagLoc, shouldLifetimeExtendThroughPath(Path) != |
7656 | PathLifetimeKind::NoExtend |
7657 | ? diag::err_dangling_member |
7658 | : diag::warn_dangling_member) |
7659 | << ExtendingDecl << IsSubobjectMember << RK << DiagRange; |
7660 | |
7661 | |
7662 | |
7663 | if (Path.empty() || |
7664 | Path.back().Kind != IndirectLocalPathEntry::DefaultInit) { |
7665 | Diag(ExtendingDecl->getLocation(), |
7666 | diag::note_lifetime_extending_member_declared_here) |
7667 | << RK << IsSubobjectMember; |
7668 | } |
7669 | } else { |
7670 | |
7671 | |
7672 | |
7673 | |
7674 | |
7675 | |
7676 | return false; |
7677 | } |
7678 | } else { |
7679 | |
7680 | |
7681 | |
7682 | if (pathContainsInit(Path)) |
7683 | return false; |
7684 | |
7685 | |
7686 | |
7687 | if (IsLocalGslOwner && pathOnlyInitializesGslPointer(Path)) |
7688 | return false; |
7689 | |
7690 | auto *DRE = dyn_cast<DeclRefExpr>(L); |
7691 | auto *VD = DRE ? dyn_cast<VarDecl>(DRE->getDecl()) : nullptr; |
7692 | if (!VD) { |
7693 | |
7694 | |
7695 | return false; |
7696 | } |
7697 | |
7698 | if (auto *Member = |
7699 | ExtendingEntity ? ExtendingEntity->getDecl() : nullptr) { |
7700 | bool IsPointer = !Member->getType()->isReferenceType(); |
7701 | Diag(DiagLoc, IsPointer ? diag::warn_init_ptr_member_to_parameter_addr |
7702 | : diag::warn_bind_ref_member_to_parameter) |
7703 | << Member << VD << isa<ParmVarDecl>(VD) << DiagRange; |
7704 | Diag(Member->getLocation(), |
7705 | diag::note_ref_or_ptr_member_declared_here) |
7706 | << (unsigned)IsPointer; |
7707 | } |
7708 | } |
7709 | break; |
7710 | } |
7711 | |
7712 | case LK_New: |
7713 | if (isa<MaterializeTemporaryExpr>(L)) { |
7714 | if (IsGslPtrInitWithGslTempOwner) |
7715 | Diag(DiagLoc, diag::warn_dangling_lifetime_pointer) << DiagRange; |
7716 | else |
7717 | Diag(DiagLoc, RK == RK_ReferenceBinding |
7718 | ? diag::warn_new_dangling_reference |
7719 | : diag::warn_new_dangling_initializer_list) |
7720 | << !Entity.getParent() << DiagRange; |
7721 | } else { |
7722 | |
7723 | return false; |
7724 | } |
7725 | break; |
7726 | |
7727 | case LK_Return: |
7728 | case LK_StmtExprResult: |
7729 | if (auto *DRE = dyn_cast<DeclRefExpr>(L)) { |
7730 | |
7731 | |
7732 | if (LK == LK_StmtExprResult) |
7733 | return false; |
7734 | Diag(DiagLoc, diag::warn_ret_stack_addr_ref) |
7735 | << Entity.getType()->isReferenceType() << DRE->getDecl() |
7736 | << isa<ParmVarDecl>(DRE->getDecl()) << DiagRange; |
7737 | } else if (isa<BlockExpr>(L)) { |
7738 | Diag(DiagLoc, diag::err_ret_local_block) << DiagRange; |
7739 | } else if (isa<AddrLabelExpr>(L)) { |
7740 | |
7741 | |
7742 | if (LK == LK_StmtExprResult) |
7743 | return false; |
7744 | Diag(DiagLoc, diag::warn_ret_addr_label) << DiagRange; |
7745 | } else { |
7746 | Diag(DiagLoc, diag::warn_ret_local_temp_addr_ref) |
7747 | << Entity.getType()->isReferenceType() << DiagRange; |
7748 | } |
7749 | break; |
7750 | } |
7751 | |
7752 | for (unsigned I = 0; I != Path.size(); ++I) { |
7753 | auto Elem = Path[I]; |
7754 | |
7755 | switch (Elem.Kind) { |
7756 | case IndirectLocalPathEntry::AddressOf: |
7757 | case IndirectLocalPathEntry::LValToRVal: |
7758 | |
7759 | |
7760 | break; |
7761 | |
7762 | case IndirectLocalPathEntry::LifetimeBoundCall: |
7763 | case IndirectLocalPathEntry::TemporaryCopy: |
7764 | case IndirectLocalPathEntry::GslPointerInit: |
7765 | case IndirectLocalPathEntry::GslReferenceInit: |
7766 | |
7767 | break; |
7768 | |
7769 | case IndirectLocalPathEntry::DefaultInit: { |
7770 | auto *FD = cast<FieldDecl>(Elem.D); |
7771 | Diag(FD->getLocation(), diag::note_init_with_default_member_initalizer) |
7772 | << FD << nextPathEntryRange(Path, I + 1, L); |
7773 | break; |
7774 | } |
7775 | |
7776 | case IndirectLocalPathEntry::VarInit: { |
7777 | const VarDecl *VD = cast<VarDecl>(Elem.D); |
7778 | Diag(VD->getLocation(), diag::note_local_var_initializer) |
7779 | << VD->getType()->isReferenceType() |
7780 | << VD->isImplicit() << VD->getDeclName() |
7781 | << nextPathEntryRange(Path, I + 1, L); |
7782 | break; |
7783 | } |
7784 | |
7785 | case IndirectLocalPathEntry::LambdaCaptureInit: |
7786 | if (!Elem.Capture->capturesVariable()) |
7787 | break; |
7788 | |
7789 | |
7790 | const VarDecl *VD = Elem.Capture->getCapturedVar(); |
7791 | Diag(Elem.Capture->getLocation(), diag::note_lambda_capture_initializer) |
7792 | << VD << VD->isInitCapture() << Elem.Capture->isExplicit() |
7793 | << (Elem.Capture->getCaptureKind() == LCK_ByRef) << VD |
7794 | << nextPathEntryRange(Path, I + 1, L); |
7795 | break; |
7796 | } |
7797 | } |
7798 | |
7799 | |
7800 | |
7801 | return false; |
7802 | }; |
7803 | |
7804 | bool EnableLifetimeWarnings = !getDiagnostics().isIgnored( |
7805 | diag::warn_dangling_lifetime_pointer, SourceLocation()); |
7806 | llvm::SmallVector<IndirectLocalPathEntry, 8> Path; |
7807 | if (Init->isGLValue()) |
7808 | visitLocalsRetainedByReferenceBinding(Path, Init, RK_ReferenceBinding, |
7809 | TemporaryVisitor, |
7810 | EnableLifetimeWarnings); |
7811 | else |
7812 | visitLocalsRetainedByInitializer(Path, Init, TemporaryVisitor, false, |
7813 | EnableLifetimeWarnings); |
7814 | } |
7815 | |
7816 | static void DiagnoseNarrowingInInitList(Sema &S, |
7817 | const ImplicitConversionSequence &ICS, |
7818 | QualType PreNarrowingType, |
7819 | QualType EntityType, |
7820 | const Expr *PostInit); |
7821 | |
7822 | |
7823 | static void CheckMoveOnConstruction(Sema &S, const Expr *InitExpr, |
7824 | bool IsReturnStmt) { |
7825 | if (!InitExpr) |
7826 | return; |
7827 | |
7828 | if (S.inTemplateInstantiation()) |
7829 | return; |
7830 | |
7831 | QualType DestType = InitExpr->getType(); |
7832 | if (!DestType->isRecordType()) |
7833 | return; |
7834 | |
7835 | unsigned DiagID = 0; |
7836 | if (IsReturnStmt) { |
7837 | const CXXConstructExpr *CCE = |
7838 | dyn_cast<CXXConstructExpr>(InitExpr->IgnoreParens()); |
7839 | if (!CCE || CCE->getNumArgs() != 1) |
7840 | return; |
7841 | |
7842 | if (!CCE->getConstructor()->isCopyOrMoveConstructor()) |
7843 | return; |
7844 | |
7845 | InitExpr = CCE->getArg(0)->IgnoreImpCasts(); |
7846 | } |
7847 | |
7848 | |
7849 | const CallExpr *CE = dyn_cast<CallExpr>(InitExpr->IgnoreParens()); |
7850 | if (!CE || !CE->isCallToStdMove()) |
7851 | return; |
7852 | |
7853 | const Expr *Arg = CE->getArg(0)->IgnoreImplicit(); |
7854 | |
7855 | if (IsReturnStmt) { |
7856 | const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(Arg->IgnoreParenImpCasts()); |
7857 | if (!DRE || DRE->refersToEnclosingVariableOrCapture()) |
7858 | return; |
7859 | |
7860 | const VarDecl *VD = dyn_cast<VarDecl>(DRE->getDecl()); |
7861 | if (!VD || !VD->hasLocalStorage()) |
7862 | return; |
7863 | |
7864 | |
7865 | if (VD->hasAttr<BlocksAttr>()) |
7866 | return; |
7867 | |
7868 | QualType SourceType = VD->getType(); |
7869 | if (!SourceType->isRecordType()) |
7870 | return; |
7871 | |
7872 | if (!S.Context.hasSameUnqualifiedType(DestType, SourceType)) { |
7873 | return; |
7874 | } |
7875 | |
7876 | |
7877 | |
7878 | if (isa<ParmVarDecl>(VD)) |
7879 | DiagID = diag::warn_redundant_move_on_return; |
7880 | else |
7881 | DiagID = diag::warn_pessimizing_move_on_return; |
7882 | } else { |
7883 | DiagID = diag::warn_pessimizing_move_on_initialization; |
7884 | const Expr *ArgStripped = Arg->IgnoreImplicit()->IgnoreParens(); |
7885 | if (!ArgStripped->isPRValue() || !ArgStripped->getType()->isRecordType()) |
7886 | return; |
7887 | } |
7888 | |
7889 | S.Diag(CE->getBeginLoc(), DiagID); |
7890 | |
7891 | |
7892 | |
7893 | SourceLocation CallBegin = CE->getCallee()->getBeginLoc(); |
7894 | if (CallBegin.isMacroID()) |
7895 | return; |
7896 | SourceLocation RParen = CE->getRParenLoc(); |
7897 | if (RParen.isMacroID()) |
7898 | return; |
7899 | SourceLocation LParen; |
7900 | SourceLocation ArgLoc = Arg->getBeginLoc(); |
7901 | |
7902 | |
7903 | |
7904 | |
7905 | while (ArgLoc.isMacroID() && |
7906 | S.getSourceManager().isAtStartOfImmediateMacroExpansion(ArgLoc)) { |
7907 | ArgLoc = S.getSourceManager().getImmediateExpansionRange(ArgLoc).getBegin(); |
7908 | } |
7909 | |
7910 | if (LParen.isMacroID()) |
7911 | return; |
7912 | |
7913 | LParen = ArgLoc.getLocWithOffset(-1); |
7914 | |
7915 | S.Diag(CE->getBeginLoc(), diag::note_remove_move) |
7916 | << FixItHint::CreateRemoval(SourceRange(CallBegin, LParen)) |
7917 | << FixItHint::CreateRemoval(SourceRange(RParen, RParen)); |
7918 | } |
7919 | |
7920 | static void CheckForNullPointerDereference(Sema &S, const Expr *E) { |
7921 | |
7922 | |
7923 | |
7924 | if (const UnaryOperator *UO = dyn_cast<UnaryOperator>(E->IgnoreParenCasts())) |
7925 | if (UO->getOpcode() == UO_Deref && |
7926 | UO->getSubExpr()->IgnoreParenCasts()-> |
7927 | isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNotNull)) { |
7928 | S.DiagRuntimeBehavior(UO->getOperatorLoc(), UO, |
7929 | S.PDiag(diag::warn_binding_null_to_reference) |
7930 | << UO->getSubExpr()->getSourceRange()); |
7931 | } |
7932 | } |
7933 | |
7934 | MaterializeTemporaryExpr * |
7935 | Sema::CreateMaterializeTemporaryExpr(QualType T, Expr *Temporary, |
7936 | bool BoundToLvalueReference) { |
7937 | auto MTE = new (Context) |
7938 | MaterializeTemporaryExpr(T, Temporary, BoundToLvalueReference); |
7939 | |
7940 | |
7941 | |
7942 | |
7943 | |
7944 | |
7945 | |
7946 | Cleanup.setExprNeedsCleanups(false); |
7947 | return MTE; |
7948 | } |
7949 | |
7950 | ExprResult Sema::TemporaryMaterializationConversion(Expr *E) { |
7951 | |
7952 | |
7953 | |
7954 | |
7955 | if (!E->isPRValue() || !getLangOpts().CPlusPlus11) |
7956 | return E; |
7957 | |
7958 | |
7959 | |
7960 | |
7961 | QualType T = E->getType(); |
7962 | if (RequireCompleteType(E->getExprLoc(), T, diag::err_incomplete_type)) |
7963 | return ExprError(); |
7964 | |
7965 | return CreateMaterializeTemporaryExpr(E->getType(), E, false); |
7966 | } |
7967 | |
7968 | ExprResult Sema::PerformQualificationConversion(Expr *E, QualType Ty, |
7969 | ExprValueKind VK, |
7970 | CheckedConversionKind CCK) { |
7971 | |
7972 | CastKind CK = CK_NoOp; |
7973 | |
7974 | if (VK == VK_PRValue) { |
7975 | auto PointeeTy = Ty->getPointeeType(); |
7976 | auto ExprPointeeTy = E->getType()->getPointeeType(); |
7977 | if (!PointeeTy.isNull() && |
7978 | PointeeTy.getAddressSpace() != ExprPointeeTy.getAddressSpace()) |
7979 | CK = CK_AddressSpaceConversion; |
7980 | } else if (Ty.getAddressSpace() != E->getType().getAddressSpace()) { |
7981 | CK = CK_AddressSpaceConversion; |
7982 | } |
7983 | |
7984 | return ImpCastExprToType(E, Ty, CK, VK, nullptr, CCK); |
7985 | } |
7986 | |
7987 | ExprResult InitializationSequence::Perform(Sema &S, |
7988 | const InitializedEntity &Entity, |
7989 | const InitializationKind &Kind, |
7990 | MultiExprArg Args, |
7991 | QualType *ResultType) { |
7992 | if (Failed()) { |
| |
7993 | Diagnose(S, Entity, Kind, Args); |
7994 | return ExprError(); |
7995 | } |
7996 | if (!ZeroInitializationFixit.empty()) { |
| 2 | | Assuming the condition is false | |
|
| |
7997 | unsigned DiagID = diag::err_default_init_const; |
7998 | if (Decl *D = Entity.getDecl()) |
7999 | if (S.getLangOpts().MSVCCompat && D->hasAttr<SelectAnyAttr>()) |
8000 | DiagID = diag::ext_default_init_const; |
8001 | |
8002 | |
8003 | |
8004 | |
8005 | QualType DestType = Entity.getType(); |
8006 | S.Diag(Kind.getLocation(), DiagID) |
8007 | << DestType << (bool)DestType->getAs<RecordType>() |
8008 | << FixItHint::CreateInsertion(ZeroInitializationFixitLoc, |
8009 | ZeroInitializationFixit); |
8010 | } |
8011 | |
8012 | if (getKind() == DependentSequence) { |
| 4 | | Assuming the condition is false | |
|
| |
8013 | |
8014 | |
8015 | |
8016 | if (ResultType && !Entity.getType()->isDependentType() && |
8017 | Args.size() == 1) { |
8018 | QualType DeclType = Entity.getType(); |
8019 | if (const IncompleteArrayType *ArrayT |
8020 | = S.Context.getAsIncompleteArrayType(DeclType)) { |
8021 | |
8022 | |
8023 | |
8024 | |
8025 | |
8026 | |
8027 | |
8028 | if (isa<InitListExpr>((Expr *)Args[0])) { |
8029 | SourceRange Brackets; |
8030 | |
8031 | |
8032 | if (auto *DD = dyn_cast_or_null<DeclaratorDecl>(Entity.getDecl())) { |
8033 | if (TypeSourceInfo *TInfo = DD->getTypeSourceInfo()) { |
8034 | TypeLoc TL = TInfo->getTypeLoc(); |
8035 | if (IncompleteArrayTypeLoc ArrayLoc = |
8036 | TL.getAs<IncompleteArrayTypeLoc>()) |
8037 | Brackets = ArrayLoc.getBracketsRange(); |
8038 | } |
8039 | } |
8040 | |
8041 | *ResultType |
8042 | = S.Context.getDependentSizedArrayType(ArrayT->getElementType(), |
8043 | nullptr, |
8044 | ArrayT->getSizeModifier(), |
8045 | ArrayT->getIndexTypeCVRQualifiers(), |
8046 | Brackets); |
8047 | } |
8048 | |
8049 | } |
8050 | } |
8051 | if (Kind.getKind() == InitializationKind::IK_Direct && |
8052 | !Kind.isExplicitCast()) { |
8053 | |
8054 | SourceRange ParenRange = Kind.getParenOrBraceRange(); |
8055 | return S.ActOnParenListExpr(ParenRange.getBegin(), ParenRange.getEnd(), |
8056 | Args); |
8057 | } |
8058 | assert(Kind.getKind() == InitializationKind::IK_Copy || |
8059 | Kind.isExplicitCast() || |
8060 | Kind.getKind() == InitializationKind::IK_DirectList); |
8061 | return ExprResult(Args[0]); |
8062 | } |
8063 | |
8064 | |
8065 | if (Steps.empty()) |
| |
8066 | return ExprResult((Expr *)nullptr); |
8067 | |
8068 | if (S.getLangOpts().CPlusPlus11 && Entity.getType()->isReferenceType() && |
| 7 | | Assuming field 'CPlusPlus11' is 0 | |
|
| |
8069 | Args.size() == 1 && isa<InitListExpr>(Args[0]) && |
8070 | !Entity.isParamOrTemplateParamKind()) { |
8071 | |
8072 | |
8073 | |
8074 | Expr *Init = Args[0]; |
8075 | S.Diag(Init->getBeginLoc(), diag::warn_cxx98_compat_reference_list_init) |
8076 | << Init->getSourceRange(); |
8077 | } |
8078 | |
8079 | |
8080 | QualType ETy = Entity.getType(); |
8081 | bool HasGlobalAS = ETy.hasAddressSpace() && |
| 9 | | Assuming the condition is false | |
|
8082 | ETy.getAddressSpace() == LangAS::opencl_global; |
8083 | |
8084 | if (S.getLangOpts().OpenCLVersion >= 200 && |
| 10 | | Assuming field 'OpenCLVersion' is < 200 | |
|
8085 | ETy->isAtomicType() && !HasGlobalAS && |
8086 | Entity.getKind() == InitializedEntity::EK_Variable && Args.size() > 0) { |
8087 | S.Diag(Args[0]->getBeginLoc(), diag::err_opencl_atomic_init) |
8088 | << 1 |
8089 | << SourceRange(Entity.getDecl()->getBeginLoc(), Args[0]->getEndLoc()); |
8090 | return ExprError(); |
8091 | } |
8092 | |
8093 | QualType DestType = Entity.getType().getNonReferenceType(); |
8094 | |
8095 | |
8096 | |
8097 | if (ResultType) |
| 11 | | Assuming 'ResultType' is null | |
|
| |
8098 | *ResultType = Entity.getDecl() ? Entity.getDecl()->getType() : |
8099 | Entity.getType(); |
8100 | |
8101 | ExprResult CurInit((Expr *)nullptr); |
8102 | SmallVector<Expr*, 4> ArrayLoopCommonExprs; |
8103 | |
8104 | |
8105 | |
8106 | |
8107 | switch (Steps.front().Kind) { |
| 13 | | Control jumps to 'case SK_ConstructorInitialization:' at line 8147 | |
|
8108 | case SK_ResolveAddressOfOverloadedFunction: |
8109 | case SK_CastDerivedToBasePRValue: |
8110 | case SK_CastDerivedToBaseXValue: |
8111 | case SK_CastDerivedToBaseLValue: |
8112 | case SK_BindReference: |
8113 | case SK_BindReferenceToTemporary: |
8114 | case SK_FinalCopy: |
8115 | case SK_ExtraneousCopyToTemporary: |
8116 | case SK_UserConversion: |
8117 | case SK_QualificationConversionLValue: |
8118 | case SK_QualificationConversionXValue: |
8119 | case SK_QualificationConversionPRValue: |
8120 | case SK_FunctionReferenceConversion: |
8121 | case SK_AtomicConversion: |
8122 | case SK_ConversionSequence: |
8123 | case SK_ConversionSequenceNoNarrowing: |
8124 | case SK_ListInitialization: |
8125 | case SK_UnwrapInitList: |
8126 | case SK_RewrapInitList: |
8127 | case SK_CAssignment: |
8128 | case SK_StringInit: |
8129 | case SK_ObjCObjectConversion: |
8130 | case SK_ArrayLoopIndex: |
8131 | case SK_ArrayLoopInit: |
8132 | case SK_ArrayInit: |
8133 | case SK_GNUArrayInit: |
8134 | case SK_ParenthesizedArrayInit: |
8135 | case SK_PassByIndirectCopyRestore: |
8136 | case SK_PassByIndirectRestore: |
8137 | case SK_ProduceObjCObject: |
8138 | case SK_StdInitializerList: |
8139 | case SK_OCLSamplerInit: |
8140 | case SK_OCLZeroOpaqueType: { |
8141 | assert(Args.size() == 1); |
8142 | CurInit = Args[0]; |
8143 | if (!CurInit.get()) return ExprError(); |
8144 | break; |
8145 | } |
8146 | |
8147 | case SK_ConstructorInitialization: |
8148 | case SK_ConstructorInitializationFromList: |
8149 | case SK_StdInitializerListConstructorCall: |
8150 | case SK_ZeroInitialization: |
8151 | break; |
| 14 | | Execution continues on line 8158 | |
|
8152 | } |
8153 | |
8154 | |
8155 | |
8156 | |
8157 | EnterExpressionEvaluationContext Evaluated( |
8158 | S, EnterExpressionEvaluationContext::InitList, |
8159 | CurInit.get() && isa<InitListExpr>(CurInit.get())); |
8160 | |
8161 | |
8162 | |
8163 | |
8164 | auto checkAbstractType = [&](QualType T) -> bool { |
8165 | if (Entity.getKind() == InitializedEntity::EK_Base || |
8166 | Entity.getKind() == InitializedEntity::EK_Delegating) |
8167 | return false; |
8168 | return S.RequireNonAbstractType(Kind.getLocation(), T, |
8169 | diag::err_allocation_of_abstract_type); |
8170 | }; |
8171 | |
8172 | |
8173 | |
8174 | bool ConstructorInitRequiresZeroInit = false; |
8175 | for (step_iterator Step = step_begin(), StepEnd = step_end(); |
| 16 | | Loop condition is true. Entering loop body | |
|
8176 | Step != StepEnd; ++Step) { |
| 15 | | Assuming 'Step' is not equal to 'StepEnd' | |
|
8177 | if (CurInit.isInvalid()) |
| |
8178 | return ExprError(); |
8179 | |
8180 | QualType SourceType = CurInit.get() ? CurInit.get()->getType() : QualType(); |
| |
8181 | |
8182 | switch (Step->Kind) { |
| 19 | | Control jumps to 'case SK_ConstructorInitializationFromList:' at line 8491 | |
|
8183 | case SK_ResolveAddressOfOverloadedFunction: |
8184 | |
8185 | |
8186 | S.CheckAddressOfMemberAccess(CurInit.get(), Step->Function.FoundDecl); |
8187 | if (S.DiagnoseUseOfDecl(Step->Function.FoundDecl, Kind.getLocation())) |
8188 | return ExprError(); |
8189 | CurInit = S.FixOverloadedFunctionReference(CurInit, |
8190 | Step->Function.FoundDecl, |
8191 | Step->Function.Function); |
8192 | break; |
8193 | |
8194 | case SK_CastDerivedToBasePRValue: |
8195 | case SK_CastDerivedToBaseXValue: |
8196 | case SK_CastDerivedToBaseLValue: { |
8197 | |
8198 | |
8199 | |
8200 | CXXCastPath BasePath; |
8201 | |
8202 | |
8203 | bool IgnoreBaseAccess = Kind.isCStyleOrFunctionalCast(); |
8204 | if (S.CheckDerivedToBaseConversion( |
8205 | SourceType, Step->Type, CurInit.get()->getBeginLoc(), |
8206 | CurInit.get()->getSourceRange(), &BasePath, IgnoreBaseAccess)) |
8207 | return ExprError(); |
8208 | |
8209 | ExprValueKind VK = |
8210 | Step->Kind == SK_CastDerivedToBaseLValue |
8211 | ? VK_LValue |
8212 | : (Step->Kind == SK_CastDerivedToBaseXValue ? VK_XValue |
8213 | : VK_PRValue); |
8214 | CurInit = ImplicitCastExpr::Create(S.Context, Step->Type, |
8215 | CK_DerivedToBase, CurInit.get(), |
8216 | &BasePath, VK, FPOptionsOverride()); |
8217 | break; |
8218 | } |
8219 | |
8220 | case SK_BindReference: |
8221 | |
8222 | |
8223 | |
8224 | if (S.CheckExceptionSpecCompatibility(CurInit.get(), DestType)) |
8225 | return ExprError(); |
8226 | |
8227 | |
8228 | |
8229 | |
8230 | if (CurInit.get()->getType()->isFunctionProtoType()) { |
8231 | if (auto *DRE = dyn_cast<DeclRefExpr>(CurInit.get()->IgnoreParens())) { |
8232 | if (auto *FD = dyn_cast<FunctionDecl>(DRE->getDecl())) { |
8233 | if (!S.checkAddressOfFunctionIsAvailable(FD, true, |
8234 | DRE->getBeginLoc())) |
8235 | return ExprError(); |
8236 | } |
8237 | } |
8238 | } |
8239 | |
8240 | CheckForNullPointerDereference(S, CurInit.get()); |
8241 | break; |
8242 | |
8243 | case SK_BindReferenceToTemporary: { |
8244 | |
8245 | assert(CurInit.get()->isPRValue() && "not a temporary"); |
8246 | |
8247 | |
8248 | if (S.CheckExceptionSpecCompatibility(CurInit.get(), DestType)) |
8249 | return ExprError(); |
8250 | |
8251 | QualType MTETy = Step->Type; |
8252 | |
8253 | |
8254 | |
8255 | |
8256 | if (MTETy->isIncompleteArrayType() && |
8257 | !CurInit.get()->getType()->isIncompleteArrayType() && |
8258 | S.Context.hasSameType( |
8259 | MTETy->getPointeeOrArrayElementType(), |
8260 | CurInit.get()->getType()->getPointeeOrArrayElementType())) |
8261 | MTETy = CurInit.get()->getType(); |
8262 | |
8263 | |
8264 | MaterializeTemporaryExpr *MTE = S.CreateMaterializeTemporaryExpr( |
8265 | MTETy, CurInit.get(), Entity.getType()->isLValueReferenceType()); |
8266 | CurInit = MTE; |
8267 | |
8268 | |
8269 | |
8270 | if (MTE->getStorageDuration() == SD_Automatic && |
8271 | MTE->getType().isDestructedType()) |
8272 | S.Cleanup.setExprNeedsCleanups(true); |
8273 | break; |
8274 | } |
8275 | |
8276 | case SK_FinalCopy: |
8277 | if (checkAbstractType(Step->Type)) |
8278 | return ExprError(); |
8279 | |
8280 | |
8281 | |
8282 | |
8283 | |
8284 | |
8285 | if (!shouldBindAsTemporary(Entity)) |
8286 | CurInit = S.MaybeBindToTemporary(CurInit.get()); |
8287 | CurInit = CopyObject(S, Step->Type, Entity, CurInit, |
8288 | false); |
8289 | break; |
8290 | |
8291 | case SK_ExtraneousCopyToTemporary: |
8292 | CurInit = CopyObject(S, Step->Type, Entity, CurInit, |
8293 | true); |
8294 | break; |
8295 | |
8296 | case SK_UserConversion: { |
8297 | |
8298 | |
8299 | CastKind CastKind; |
8300 | FunctionDecl *Fn = Step->Function.Function; |
8301 | DeclAccessPair FoundFn = Step->Function.FoundDecl; |
8302 | bool HadMultipleCandidates = Step->Function.HadMultipleCandidates; |
8303 | bool CreatedObject = false; |
8304 | if (CXXConstructorDecl *Constructor = dyn_cast<CXXConstructorDecl>(Fn)) { |
8305 | |
8306 | SmallVector<Expr*, 8> ConstructorArgs; |
8307 | SourceLocation Loc = CurInit.get()->getBeginLoc(); |
8308 | |
8309 | |
8310 | |
8311 | Expr *Arg = CurInit.get(); |
8312 | if (S.CompleteConstructorCall(Constructor, Step->Type, |
8313 | MultiExprArg(&Arg, 1), Loc, |
8314 | ConstructorArgs)) |
8315 | return ExprError(); |
8316 | |
8317 | |
8318 | CurInit = S.BuildCXXConstructExpr(Loc, Step->Type, |
8319 | FoundFn, Constructor, |
8320 | ConstructorArgs, |
8321 | HadMultipleCandidates, |
8322 | false, |
8323 | false, |
8324 | false, |
8325 | CXXConstructExpr::CK_Complete, |
8326 | SourceRange()); |
8327 | if (CurInit.isInvalid()) |
8328 | return ExprError(); |
8329 | |
8330 | S.CheckConstructorAccess(Kind.getLocation(), Constructor, FoundFn, |
8331 | Entity); |
8332 | if (S.DiagnoseUseOfDecl(FoundFn, Kind.getLocation())) |
8333 | return ExprError(); |
8334 | |
8335 | CastKind = CK_ConstructorConversion; |
8336 | CreatedObject = true; |
8337 | } else { |
8338 | |
8339 | CXXConversionDecl *Conversion = cast<CXXConversionDecl>(Fn); |
8340 | S.CheckMemberOperatorAccess(Kind.getLocation(), CurInit.get(), nullptr, |
8341 | FoundFn); |
8342 | if (S.DiagnoseUseOfDecl(FoundFn, Kind.getLocation())) |
8343 | return ExprError(); |
8344 | |
8345 | CurInit = S.BuildCXXMemberCallExpr(CurInit.get(), FoundFn, Conversion, |
8346 | HadMultipleCandidates); |
8347 | if (CurInit.isInvalid()) |
8348 | return ExprError(); |
8349 | |
8350 | CastKind = CK_UserDefinedConversion; |
8351 | CreatedObject = Conversion->getReturnType()->isRecordType(); |
8352 | } |
8353 | |
8354 | if (CreatedObject && checkAbstractType(CurInit.get()->getType())) |
8355 | return ExprError(); |
8356 | |
8357 | CurInit = ImplicitCastExpr::Create( |
8358 | S.Context, CurInit.get()->getType(), CastKind, CurInit.get(), nullptr, |
8359 | CurInit.get()->getValueKind(), S.CurFPFeatureOverrides()); |
8360 | |
8361 | if (shouldBindAsTemporary(Entity)) |
8362 | |
8363 | |
8364 | CurInit = S.MaybeBindToTemporary(CurInit.getAs<Expr>()); |
8365 | else if (CreatedObject && shouldDestroyEntity(Entity)) { |
8366 | |
8367 | |
8368 | |
8369 | |
8370 | QualType T = CurInit.get()->getType(); |
8371 | if (const RecordType *Record = T->getAs<RecordType>()) { |
8372 | CXXDestructorDecl *Destructor |
8373 | = S.LookupDestructor(cast<CXXRecordDecl>(Record->getDecl())); |
8374 | S.CheckDestructorAccess(CurInit.get()->getBeginLoc(), Destructor, |
8375 | S.PDiag(diag::err_access_dtor_temp) << T); |
8376 | S.MarkFunctionReferenced(CurInit.get()->getBeginLoc(), Destructor); |
8377 | if (S.DiagnoseUseOfDecl(Destructor, CurInit.get()->getBeginLoc())) |
8378 | return ExprError(); |
8379 | } |
8380 | } |
8381 | break; |
8382 | } |
8383 | |
8384 | case SK_QualificationConversionLValue: |
8385 | case SK_QualificationConversionXValue: |
8386 | case SK_QualificationConversionPRValue: { |
8387 | |
8388 | ExprValueKind VK = |
8389 | Step->Kind == SK_QualificationConversionLValue |
8390 | ? VK_LValue |
8391 | : (Step->Kind == SK_QualificationConversionXValue ? VK_XValue |
8392 | : VK_PRValue); |
8393 | CurInit = S.PerformQualificationConversion(CurInit.get(), Step->Type, VK); |
8394 | break; |
8395 | } |
8396 | |
8397 | case SK_FunctionReferenceConversion: |
8398 | assert(CurInit.get()->isLValue() && |
8399 | "function reference should be lvalue"); |
8400 | CurInit = |
8401 | S.ImpCastExprToType(CurInit.get(), Step->Type, CK_NoOp, VK_LValue); |
8402 | break; |
8403 | |
8404 | case SK_AtomicConversion: { |
8405 | assert(CurInit.get()->isPRValue() && "cannot convert glvalue to atomic"); |
8406 | CurInit = S.ImpCastExprToType(CurInit.get(), Step->Type, |
8407 | CK_NonAtomicToAtomic, VK_PRValue); |
8408 | break; |
8409 | } |
8410 | |
8411 | case SK_ConversionSequence: |
8412 | case SK_ConversionSequenceNoNarrowing: { |
8413 | if (const auto *FromPtrType = |
8414 | CurInit.get()->getType()->getAs<PointerType>()) { |
8415 | if (const auto *ToPtrType = Step->Type->getAs<PointerType>()) { |
8416 | if (FromPtrType->getPointeeType()->hasAttr(attr::NoDeref) && |
8417 | !ToPtrType->getPointeeType()->hasAttr(attr::NoDeref)) { |
8418 | |
8419 | |
8420 | if (!Kind.isStaticCast()) { |
8421 | S.Diag(CurInit.get()->getExprLoc(), |
8422 | diag::warn_noderef_to_dereferenceable_pointer) |
8423 | << CurInit.get()->getSourceRange(); |
8424 | } |
8425 | } |
8426 | } |
8427 | } |
8428 | |
8429 | Sema::CheckedConversionKind CCK |
8430 | = Kind.isCStyleCast()? Sema::CCK_CStyleCast |
8431 | : Kind.isFunctionalCast()? Sema::CCK_FunctionalCast |
8432 | : Kind.isExplicitCast()? Sema::CCK_OtherCast |
8433 | : Sema::CCK_ImplicitConversion; |
8434 | ExprResult CurInitExprRes = |
8435 | S.PerformImplicitConversion(CurInit.get(), Step->Type, *Step->ICS, |
8436 | getAssignmentAction(Entity), CCK); |
8437 | if (CurInitExprRes.isInvalid()) |
8438 | return ExprError(); |
8439 | |
8440 | S.DiscardMisalignedMemberAddress(Step->Type.getTypePtr(), CurInit.get()); |
8441 | |
8442 | CurInit = CurInitExprRes; |
8443 | |
8444 | if (Step->Kind == SK_ConversionSequenceNoNarrowing && |
8445 | S.getLangOpts().CPlusPlus) |
8446 | DiagnoseNarrowingInInitList(S, *Step->ICS, SourceType, Entity.getType(), |
8447 | CurInit.get()); |
8448 | |
8449 | break; |
8450 | } |
8451 | |
8452 | case SK_ListInitialization: { |
8453 | if (checkAbstractType(Step->Type)) |
8454 | return ExprError(); |
8455 | |
8456 | InitListExpr *InitList = cast<InitListExpr>(CurInit.get()); |
8457 | |
8458 | |
8459 | QualType Ty = Step->Type; |
8460 | bool IsTemporary = !S.Context.hasSameType(Entity.getType(), Ty); |
8461 | InitializedEntity TempEntity = InitializedEntity::InitializeTemporary(Ty); |
8462 | InitializedEntity InitEntity = IsTemporary ? TempEntity : Entity; |
8463 | InitListChecker PerformInitList(S, InitEntity, |
8464 | InitList, Ty, false, |
8465 | false); |
8466 | if (PerformInitList.HadError()) |
8467 | return ExprError(); |
8468 | |
8469 | |
8470 | |
8471 | |
8472 | if (ResultType && |
8473 | ResultType->getNonReferenceType()->isIncompleteArrayType()) { |
8474 | if ((*ResultType)->isRValueReferenceType()) |
8475 | Ty = S.Context.getRValueReferenceType(Ty); |
8476 | else if ((*ResultType)->isLValueReferenceType()) |
8477 | Ty = S.Context.getLValueReferenceType(Ty, |
8478 | (*ResultType)->castAs<LValueReferenceType>()->isSpelledAsLValue()); |
8479 | *ResultType = Ty; |
8480 | } |
8481 | |
8482 | InitListExpr *StructuredInitList = |
8483 | PerformInitList.getFullyStructuredList(); |
8484 | CurInit.get(); |
8485 | CurInit = shouldBindAsTemporary(InitEntity) |
8486 | ? S.MaybeBindToTemporary(StructuredInitList) |
8487 | : StructuredInitList; |
8488 | break; |
8489 | } |
8490 | |
8491 | case SK_ConstructorInitializationFromList: { |
8492 | if (checkAbstractType(Step->Type)) |
| 20 | | Assuming the condition is false | |
|
| |
8493 | return ExprError(); |
8494 | |
8495 | |
8496 | |
8497 | |
8498 | |
8499 | |
8500 | |
8501 | InitializedEntity TempEntity = InitializedEntity::InitializeTemporary( |
8502 | Entity.getType().getNonReferenceType()); |
8503 | bool UseTemporary = Entity.getType()->isReferenceType(); |
8504 | assert(Args.size() == 1 && "expected a single argument for list init"); |
8505 | InitListExpr *InitList = cast<InitListExpr>(Args[0]); |
| 22 | | The object is a 'InitListExpr' | |
|
8506 | S.Diag(InitList->getExprLoc(), diag::warn_cxx98_compat_ctor_list_init) |
8507 | << InitList->getSourceRange(); |
8508 | MultiExprArg Arg(InitList->getInits(), InitList->getNumInits()); |
8509 | CurInit = PerformConstructorInitialization(S, UseTemporary ? TempEntity : |
| |
| 24 | | Calling 'PerformConstructorInitialization' | |
|
8510 | Entity, |
8511 | Kind, Arg, *Step, |
8512 | ConstructorInitRequiresZeroInit, |
8513 | true, |
8514 | false, |
8515 | InitList->getLBraceLoc(), |
8516 | InitList->getRBraceLoc()); |
8517 | break; |
8518 | } |
8519 | |
8520 | case SK_UnwrapInitList: |
8521 | CurInit = cast<InitListExpr>(CurInit.get())->getInit(0); |
8522 | break; |
8523 | |
8524 | case SK_RewrapInitList: { |
8525 | Expr *E = CurInit.get(); |
8526 | InitListExpr *Syntactic = Step->WrappingSyntacticList; |
8527 | InitListExpr *ILE = new (S.Context) InitListExpr(S.Context, |
8528 | Syntactic->getLBraceLoc(), E, Syntactic->getRBraceLoc()); |
8529 | ILE->setSyntacticForm(Syntactic); |
8530 | ILE->setType(E->getType()); |
8531 | ILE->setValueKind(E->getValueKind()); |
8532 | CurInit = ILE; |
8533 | break; |
8534 | } |
8535 | |
8536 | case SK_ConstructorInitialization: |
8537 | case SK_StdInitializerListConstructorCall: { |
8538 | if (checkAbstractType(Step->Type)) |
8539 | return ExprError(); |
8540 | |
8541 | |
8542 | |
8543 | |
8544 | |
8545 | |
8546 | |
8547 | InitializedEntity TempEntity = InitializedEntity::InitializeTemporary( |
8548 | Entity.getType().getNonReferenceType()); |
8549 | bool UseTemporary = Entity.getType()->isReferenceType(); |
8550 | bool IsStdInitListInit = |
8551 | Step->Kind == SK_StdInitializerListConstructorCall; |
8552 | Expr *Source = CurInit.get(); |
8553 | SourceRange Range = Kind.hasParenOrBraceRange() |
8554 | ? Kind.getParenOrBraceRange() |
8555 | : SourceRange(); |
8556 | CurInit = PerformConstructorInitialization( |
8557 | S, UseTemporary ? TempEntity : Entity, Kind, |
8558 | Source ? MultiExprArg(Source) : Args, *Step, |
8559 | ConstructorInitRequiresZeroInit, |
8560 | IsStdInitListInit, |
8561 | IsStdInitListInit, |
8562 | Range.getBegin(), |
8563 | Range.getEnd()); |
8564 | break; |
8565 | } |
8566 | |
8567 | case SK_ZeroInitialization: { |
8568 | step_iterator NextStep = Step; |
8569 | ++NextStep; |
8570 | if (NextStep != StepEnd && |
8571 | (NextStep->Kind == SK_ConstructorInitialization || |
8572 | NextStep->Kind == SK_ConstructorInitializationFromList)) { |
8573 | |
8574 | |
8575 | ConstructorInitRequiresZeroInit = true; |
8576 | } else if (Kind.getKind() == InitializationKind::IK_Value && |
8577 | S.getLangOpts().CPlusPlus && |
8578 | !Kind.isImplicitValueInit()) { |
8579 | TypeSourceInfo *TSInfo = Entity.getTypeSourceInfo(); |
8580 | if (!TSInfo) |
8581 | TSInfo = S.Context.getTrivialTypeSourceInfo(Step->Type, |
8582 | Kind.getRange().getBegin()); |
8583 | |
8584 | CurInit = new (S.Context) CXXScalarValueInitExpr( |
8585 | Entity.getType().getNonLValueExprType(S.Context), TSInfo, |
8586 | Kind.getRange().getEnd()); |
8587 | } else { |
8588 | CurInit = new (S.Context) ImplicitValueInitExpr(Step->Type); |
8589 | } |
8590 | break; |
8591 | } |
8592 | |
8593 | case SK_CAssignment: { |
8594 | QualType SourceType = CurInit.get()->getType(); |
8595 | |
8596 | |
8597 | ExprResult InitialCurInit = CurInit; |
8598 | ExprResult Result = CurInit; |
8599 | Sema::AssignConvertType ConvTy = |
8600 | S.CheckSingleAssignmentConstraints(Step->Type, Result, true, |
8601 | Entity.getKind() == InitializedEntity::EK_Parameter_CF_Audited); |
8602 | if (Result.isInvalid()) |
8603 | return ExprError(); |
8604 | CurInit = Result; |
8605 | |
8606 | |
8607 | ExprResult CurInitExprRes = CurInit; |
8608 | if (ConvTy != Sema::Compatible && |
8609 | Entity.isParameterKind() && |
8610 | S.CheckTransparentUnionArgumentConstraints(Step->Type, CurInitExprRes) |
8611 | == Sema::Compatible) |
8612 | ConvTy = Sema::Compatible; |
8613 | if (CurInitExprRes.isInvalid()) |
8614 | return ExprError(); |
8615 | CurInit = CurInitExprRes; |
8616 | |
8617 | bool Complained; |
8618 | if (S.DiagnoseAssignmentResult(ConvTy, Kind.getLocation(), |
8619 | Step->Type, SourceType, |
8620 | InitialCurInit.get(), |
8621 | getAssignmentAction(Entity, true), |
8622 | &Complained)) { |
8623 | PrintInitLocationNote(S, Entity); |
8624 | return ExprError(); |
8625 | } else if (Complained) |
8626 | PrintInitLocationNote(S, Entity); |
8627 | break; |
8628 | } |
8629 | |
8630 | case SK_StringInit: { |
8631 | QualType Ty = Step->Type; |
8632 | bool UpdateType = ResultType && Entity.getType()->isIncompleteArrayType(); |
8633 | CheckStringInit(CurInit.get(), UpdateType ? *ResultType : Ty, |
8634 | S.Context.getAsArrayType(Ty), S); |
8635 | break; |
8636 | } |
8637 | |
8638 | case SK_ObjCObjectConversion: |
8639 | CurInit = S.ImpCastExprToType(CurInit.get(), Step->Type, |
8640 | CK_ObjCObjectLValueCast, |
8641 | CurInit.get()->getValueKind()); |
8642 | break; |
8643 | |
8644 | case SK_ArrayLoopIndex: { |
8645 | Expr *Cur = CurInit.get(); |
8646 | Expr *BaseExpr = new (S.Context) |
8647 | OpaqueValueExpr(Cur->getExprLoc(), Cur->getType(), |
8648 | Cur->getValueKind(), Cur->getObjectKind(), Cur); |
8649 | Expr *IndexExpr = |
8650 | new (S.Context) ArrayInitIndexExpr(S.Context.getSizeType()); |
8651 | CurInit = S.CreateBuiltinArraySubscriptExpr( |
8652 | BaseExpr, Kind.getLocation(), IndexExpr, Kind.getLocation()); |
8653 | ArrayLoopCommonExprs.push_back(BaseExpr); |
8654 | break; |
8655 | } |
8656 | |
8657 | case SK_ArrayLoopInit: { |
8658 | assert(!ArrayLoopCommonExprs.empty() && |
8659 | "mismatched SK_ArrayLoopIndex and SK_ArrayLoopInit"); |
8660 | Expr *Common = ArrayLoopCommonExprs.pop_back_val(); |
8661 | CurInit = new (S.Context) ArrayInitLoopExpr(Step->Type, Common, |
8662 | CurInit.get()); |
8663 | break; |
8664 | } |
8665 | |
8666 | case SK_GNUArrayInit: |
8667 | |
8668 | |
8669 | S.Diag(Kind.getLocation(), diag::ext_array_init_copy) |
8670 | << Step->Type << CurInit.get()->getType() |
8671 | << CurInit.get()->getSourceRange(); |
8672 | updateGNUCompoundLiteralRValue(CurInit.get()); |
8673 | LLVM_FALLTHROUGH; |
8674 | case SK_ArrayInit: |
8675 | |
8676 | |
8677 | if (ResultType) { |
8678 | if (const IncompleteArrayType *IncompleteDest |
8679 | = S.Context.getAsIncompleteArrayType(Step->Type)) { |
8680 | if (const ConstantArrayType *ConstantSource |
8681 | = S.Context.getAsConstantArrayType(CurInit.get()->getType())) { |
8682 | *ResultType = S.Context.getConstantArrayType( |
8683 | IncompleteDest->getElementType(), |
8684 | ConstantSource->getSize(), |
8685 | ConstantSource->getSizeExpr(), |
8686 | ArrayType::Normal, 0); |
8687 | } |
8688 | } |
8689 | } |
8690 | break; |
8691 | |
8692 | case SK_ParenthesizedArrayInit: |
8693 | |
8694 | |
8695 | S.Diag(Kind.getLocation(), diag::ext_array_init_parens) |
8696 | << CurInit.get()->getSourceRange(); |
8697 | break; |
8698 | |
8699 | case SK_PassByIndirectCopyRestore: |
8700 | case SK_PassByIndirectRestore: |
8701 | checkIndirectCopyRestoreSource(S, CurInit.get()); |
8702 | CurInit = new (S.Context) ObjCIndirectCopyRestoreExpr( |
8703 | CurInit.get(), Step->Type, |
8704 | Step->Kind == SK_PassByIndirectCopyRestore); |
8705 | break; |
8706 | |
8707 | case SK_ProduceObjCObject: |
8708 | CurInit = ImplicitCastExpr::Create( |
8709 | S.Context, Step->Type, CK_ARCProduceObject, CurInit.get(), nullptr, |
8710 | VK_PRValue, FPOptionsOverride()); |
8711 | break; |
8712 | |
8713 | case SK_StdInitializerList: { |
8714 | S.Diag(CurInit.get()->getExprLoc(), |
8715 | diag::warn_cxx98_compat_initializer_list_init) |
8716 | << CurInit.get()->getSourceRange(); |
8717 | |
8718 | |
8719 | MaterializeTemporaryExpr *MTE = S.CreateMaterializeTemporaryExpr( |
8720 | CurInit.get()->getType(), CurInit.get(), |
8721 | false); |
8722 | |
8723 | |
8724 | CurInit = new (S.Context) CXXStdInitializerListExpr(Step->Type, MTE); |
8725 | |
8726 | |
8727 | |
8728 | if (shouldBindAsTemporary(Entity)) |
8729 | CurInit = S.MaybeBindToTemporary(CurInit.get()); |
8730 | break; |
8731 | } |
8732 | |
8733 | case SK_OCLSamplerInit: { |
8734 | |
8735 | |
8736 | |
8737 | |
8738 | |
8739 | |
8740 | |
8741 | |
8742 | |
8743 | |
8744 | |
8745 | |
8746 | |
8747 | |
8748 | |
8749 | assert(Step->Type->isSamplerT() && |
8750 | "Sampler initialization on non-sampler type."); |
8751 | Expr *Init = CurInit.get()->IgnoreParens(); |
8752 | QualType SourceType = Init->getType(); |
8753 | |
8754 | if (Entity.isParameterKind()) { |
8755 | if (!SourceType->isSamplerT() && !SourceType->isIntegerType()) { |
8756 | S.Diag(Kind.getLocation(), diag::err_sampler_argument_required) |
8757 | << SourceType; |
8758 | break; |
8759 | } else if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(Init)) { |
8760 | auto Var = cast<VarDecl>(DRE->getDecl()); |
8761 | |
8762 | |
8763 | if (!Var->hasGlobalStorage()) { |
8764 | CurInit = ImplicitCastExpr::Create( |
8765 | S.Context, Step->Type, CK_LValueToRValue, Init, |
8766 | nullptr, VK_PRValue, FPOptionsOverride()); |
8767 | break; |
8768 | } |
8769 | |
8770 | |
8771 | |
8772 | |
8773 | |
8774 | |
8775 | if (!Var->getInit() || !isa<ImplicitCastExpr>(Var->getInit())) |
8776 | break; |
8777 | Init = cast<ImplicitCastExpr>(const_cast<Expr*>( |
8778 | Var->getInit()))->getSubExpr(); |
8779 | SourceType = Init->getType(); |
8780 | } |
8781 | } else { |
8782 | |
8783 | |
8784 | |
8785 | |
8786 | if (!Init->isConstantInitializer(S.Context, false)) |
8787 | break; |
8788 | |
8789 | if (!SourceType->isIntegerType() || |
8790 | 32 != S.Context.getIntWidth(SourceType)) { |
8791 | S.Diag(Kind.getLocation(), diag::err_sampler_initializer_not_integer) |
8792 | << SourceType; |
8793 | break; |
8794 | } |
8795 | |
8796 | Expr::EvalResult EVResult; |
8797 | Init->EvaluateAsInt(EVResult, S.Context); |
8798 | llvm::APSInt Result = EVResult.Val.getInt(); |
8799 | const uint64_t SamplerValue = Result.getLimitedValue(); |
8800 | |
8801 | |
8802 | |
8803 | |
8804 | |
8805 | |
8806 | unsigned AddressingMode = (0x0E & SamplerValue) >> 1; |
8807 | unsigned FilterMode = (0x30 & SamplerValue) >> 4; |
8808 | if (FilterMode != 1 && FilterMode != 2 && |
8809 | !S.getOpenCLOptions().isAvailableOption( |
8810 | "cl_intel_device_side_avc_motion_estimation", S.getLangOpts())) |
8811 | S.Diag(Kind.getLocation(), |
8812 | diag::warn_sampler_initializer_invalid_bits) |
8813 | << "Filter Mode"; |
8814 | if (AddressingMode > 4) |
8815 | S.Diag(Kind.getLocation(), |
8816 | diag::warn_sampler_initializer_invalid_bits) |
8817 | << "Addressing Mode"; |
8818 | } |
8819 | |
8820 | |
8821 | |
8822 | CurInit = S.ImpCastExprToType(Init, S.Context.OCLSamplerTy, |
8823 | CK_IntToOCLSampler); |
8824 | break; |
8825 | } |
8826 | case SK_OCLZeroOpaqueType: { |
8827 | assert((Step->Type->isEventT() || Step->Type->isQueueT() || |
8828 | Step->Type->isOCLIntelSubgroupAVCType()) && |
8829 | "Wrong type for initialization of OpenCL opaque type."); |
8830 | |
8831 | CurInit = S.ImpCastExprToType(CurInit.get(), Step->Type, |
8832 | CK_ZeroToOCLOpaqueType, |
8833 | CurInit.get()->getValueKind()); |
8834 | break; |
8835 | } |
8836 | } |
8837 | } |
8838 | |
8839 | |
8840 | |
8841 | if (auto *Init = CurInit.get()) |
8842 | S.checkInitializerLifetime(Entity, Init); |
8843 | |
8844 | |
8845 | if (Entity.getKind() == InitializedEntity::EK_Member && |
8846 | cast<FieldDecl>(Entity.getDecl())->isBitField()) |
8847 | S.CheckBitFieldInitialization(Kind.getLocation(), |
8848 | cast<FieldDecl>(Entity.getDecl()), |
8849 | CurInit.get()); |
8850 | |
8851 | |
8852 | if (const Expr *E = CurInit.get()) { |
8853 | CheckMoveOnConstruction(S, E, |
8854 | Entity.getKind() == InitializedEntity::EK_Result); |
8855 | } |
8856 | |
8857 | return CurInit; |
8858 | } |
8859 | |
8860 | |
8861 | |
8862 | static bool DiagnoseUninitializedReference(Sema &S, SourceLocation Loc, |
8863 | QualType T) { |
8864 | if (T->isReferenceType()) { |
8865 | S.Diag(Loc, diag::err_reference_without_init) |
8866 | << T.getNonReferenceType(); |
8867 | return true; |
8868 | } |
8869 | |
8870 | CXXRecordDecl *RD = T->getBaseElementTypeUnsafe()->getAsCXXRecordDecl(); |
8871 | if (!RD || !RD->hasUninitializedReferenceMember()) |
8872 | return false; |
8873 | |
8874 | for (const auto *FI : RD->fields()) { |
8875 | if (FI->isUnnamedBitfield()) |
8876 | continue; |
8877 | |
8878 | if (DiagnoseUninitializedReference(S, FI->getLocation(), FI->getType())) { |
8879 | S.Diag(Loc, diag::note_value_initialization_here) << RD; |
8880 | return true; |
8881 | } |
8882 | } |
8883 | |
8884 | for (const auto &BI : RD->bases()) { |
8885 | if (DiagnoseUninitializedReference(S, BI.getBeginLoc(), BI.getType())) { |
8886 | S.Diag(Loc, diag::note_value_initialization_here) << RD; |
8887 | return true; |
8888 | } |
8889 | } |
8890 | |
8891 | return false; |
8892 | } |
8893 | |
8894 | |
8895 | |
8896 | |
8897 | |
8898 | |
8899 | |
8900 | |
8901 | static void emitBadConversionNotes(Sema &S, const InitializedEntity &entity, |
8902 | Expr *op) { |
8903 | QualType destType = entity.getType(); |
8904 | if (destType.getNonReferenceType()->isObjCObjectPointerType() && |
8905 | op->getType()->isObjCObjectPointerType()) { |
8906 | |
8907 | |
8908 | |
8909 | S.EmitRelatedResultTypeNote(op); |
8910 | |
8911 | |
8912 | |
8913 | if (entity.getKind() == InitializedEntity::EK_Result) |
8914 | S.EmitRelatedResultTypeNoteForReturn(destType); |
8915 | } |
8916 | QualType fromType = op->getType(); |
8917 | auto *fromDecl = fromType.getTypePtr()->getPointeeCXXRecordDecl(); |
8918 | auto *destDecl = destType.getTypePtr()->getPointeeCXXRecordDecl(); |
8919 | if (fromDecl && destDecl && fromDecl->getDeclKind() == Decl::CXXRecord && |
8920 | destDecl->getDeclKind() == Decl::CXXRecord && |
8921 | !fromDecl->isInvalidDecl() && !destDecl->isInvalidDecl() && |
8922 | !fromDecl->hasDefinition()) |
8923 | S.Diag(fromDecl->getLocation(), diag::note_forward_class_conversion) |
8924 | << S.getASTContext().getTagDeclType(fromDecl) |
8925 | << S.getASTContext().getTagDeclType(destDecl); |
8926 | } |
8927 | |
8928 | static void diagnoseListInit(Sema &S, const InitializedEntity &Entity, |
8929 | InitListExpr *InitList) { |
8930 | QualType DestType = Entity.getType(); |
8931 | |
8932 | QualType E; |
8933 | if (S.getLangOpts().CPlusPlus11 && S.isStdInitializerList(DestType, &E)) { |
8934 | QualType ArrayType = S.Context.getConstantArrayType( |
8935 | E.withConst(), |
8936 | llvm::APInt(S.Context.getTypeSize(S.Context.getSizeType()), |
8937 | InitList->getNumInits()), |
8938 | nullptr, clang::ArrayType::Normal, 0); |
8939 | InitializedEntity HiddenArray = |
8940 | InitializedEntity::InitializeTemporary(ArrayType); |
8941 | return diagnoseListInit(S, HiddenArray, InitList); |
8942 | } |
8943 | |
8944 | if (DestType->isReferenceType()) { |
8945 | |
8946 | |
8947 | |
8948 | QualType T = DestType->castAs<ReferenceType>()->getPointeeType(); |
8949 | diagnoseListInit(S, InitializedEntity::InitializeTemporary(T), InitList); |
8950 | SourceLocation Loc = InitList->getBeginLoc(); |
8951 | if (auto *D = Entity.getDecl()) |
8952 | Loc = D->getLocation(); |
8953 | S.Diag(Loc, diag::note_in_reference_temporary_list_initializer) << T; |
8954 | return; |
8955 | } |
8956 | |
8957 | InitListChecker DiagnoseInitList(S, Entity, InitList, DestType, |
8958 | false, |
8959 | false); |
8960 | assert(DiagnoseInitList.HadError() && |
8961 | "Inconsistent init list check result."); |
8962 | } |
8963 | |
8964 | bool InitializationSequence::Diagnose(Sema &S, |
8965 | const InitializedEntity &Entity, |
8966 | const InitializationKind &Kind, |
8967 | ArrayRef<Expr *> Args) { |
8968 | if (!Failed()) |
8969 | return false; |
8970 | |
8971 | |
8972 | |
8973 | Expr *OnlyArg; |
8974 | if (Args.size() == 1) { |
8975 | auto *List = dyn_cast<InitListExpr>(Args[0]); |
8976 | if (List && List->getNumInits() == 1) |
8977 | OnlyArg = List->getInit(0); |
8978 | else |
8979 | OnlyArg = Args[0]; |
8980 | } |
8981 | else |
8982 | OnlyArg = nullptr; |
8983 | |
8984 | QualType DestType = Entity.getType(); |
8985 | switch (Failure) { |
8986 | case FK_TooManyInitsForReference: |
8987 | |
8988 | if (Args.empty()) { |
8989 | |
8990 | |
8991 | |
8992 | assert(Kind.getKind() == InitializationKind::IK_Value || |
8993 | DestType->isReferenceType()); |
8994 | bool Diagnosed = |
8995 | DiagnoseUninitializedReference(S, Kind.getLocation(), DestType); |
8996 | assert(Diagnosed && "couldn't find uninitialized reference to diagnose"); |
8997 | (void)Diagnosed; |
8998 | } else |
8999 | S.Diag(Kind.getLocation(), diag::err_reference_has_multiple_inits) |
9000 | << SourceRange(Args.front()->getBeginLoc(), Args.back()->getEndLoc()); |
9001 | break; |
9002 | case FK_ParenthesizedListInitForReference: |
9003 | S.Diag(Kind.getLocation(), diag::err_list_init_in_parens) |
9004 | << 1 << Entity.getType() << Args[0]->getSourceRange(); |
9005 | break; |
9006 | |
9007 | case FK_ArrayNeedsInitList: |
9008 | S.Diag(Kind.getLocation(), diag::err_array_init_not_init_list) << 0; |
9009 | break; |
9010 | case FK_ArrayNeedsInitListOrStringLiteral: |
9011 | S.Diag(Kind.getLocation(), diag::err_array_init_not_init_list) << 1; |
9012 | break; |
9013 | case FK_ArrayNeedsInitListOrWideStringLiteral: |
9014 | S.Diag(Kind.getLocation(), diag::err_array_init_not_init_list) << 2; |
9015 | break; |
9016 | case FK_NarrowStringIntoWideCharArray: |
9017 | S.Diag(Kind.getLocation(), diag::err_array_init_narrow_string_into_wchar); |
9018 | break; |
9019 | case FK_WideStringIntoCharArray: |
9020 | S.Diag(Kind.getLocation(), diag::err_array_init_wide_string_into_char); |
9021 | break; |
9022 | case FK_IncompatWideStringIntoWideChar: |
9023 | S.Diag(Kind.getLocation(), |
9024 | diag::err_array_init_incompat_wide_string_into_wchar); |
9025 | break; |
9026 | case FK_PlainStringIntoUTF8Char: |
9027 | S.Diag(Kind.getLocation(), |
9028 | diag::err_array_init_plain_string_into_char8_t); |
9029 | S.Diag(Args.front()->getBeginLoc(), |
9030 | diag::note_array_init_plain_string_into_char8_t) |
9031 | << FixItHint::CreateInsertion(Args.front()->getBeginLoc(), "u8"); |
9032 | break; |
9033 | case FK_UTF8StringIntoPlainChar: |
9034 | S.Diag(Kind.getLocation(), |
9035 | diag::err_array_init_utf8_string_into_char) |
9036 | << S.getLangOpts().CPlusPlus20; |
9037 | break; |
9038 | case FK_ArrayTypeMismatch: |
9039 | case FK_NonConstantArrayInit: |
9040 | S.Diag(Kind.getLocation(), |
9041 | (Failure == FK_ArrayTypeMismatch |
9042 | ? diag::err_array_init_different_type |
9043 | : diag::err_array_init_non_constant_array)) |
9044 | << DestType.getNonReferenceType() |
9045 | << OnlyArg->getType() |
9046 | << Args[0]->getSourceRange(); |
9047 | break; |
9048 | |
9049 | case FK_VariableLengthArrayHasInitializer: |
9050 | S.Diag(Kind.getLocation(), diag::err_variable_object_no_init) |
9051 | << Args[0]->getSourceRange(); |
9052 | break; |
9053 | |
9054 | case FK_AddressOfOverloadFailed: { |
9055 | DeclAccessPair Found; |
9056 | S.ResolveAddressOfOverloadedFunction(OnlyArg, |
9057 | DestType.getNonReferenceType(), |
9058 | true, |
9059 | Found); |
9060 | break; |
9061 | } |
9062 | |
9063 | case FK_AddressOfUnaddressableFunction: { |
9064 | auto *FD = cast<FunctionDecl>(cast<DeclRefExpr>(OnlyArg)->getDecl()); |
9065 | S.checkAddressOfFunctionIsAvailable(FD, true, |
9066 | OnlyArg->getBeginLoc()); |
9067 | break; |
9068 | } |
9069 | |
9070 | case FK_ReferenceInitOverloadFailed: |
9071 | case FK_UserConversionOverloadFailed: |
9072 | switch (FailedOverloadResult) { |
9073 | case OR_Ambiguous: |
9074 | |
9075 | FailedCandidateSet.NoteCandidates( |
9076 | PartialDiagnosticAt( |
9077 | Kind.getLocation(), |
9078 | Failure == FK_UserConversionOverloadFailed |
9079 | ? (S.PDiag(diag::err_typecheck_ambiguous_condition) |
9080 | << OnlyArg->getType() << DestType |
9081 | << Args[0]->getSourceRange()) |
9082 | : (S.PDiag(diag::err_ref_init_ambiguous) |
9083 | << DestType << OnlyArg->getType() |
9084 | << Args[0]->getSourceRange())), |
9085 | S, OCD_AmbiguousCandidates, Args); |
9086 | break; |
9087 | |
9088 | case OR_No_Viable_Function: { |
9089 | auto Cands = FailedCandidateSet.CompleteCandidates(S, OCD_AllCandidates, Args); |
9090 | if (!S.RequireCompleteType(Kind.getLocation(), |
9091 | DestType.getNonReferenceType(), |
9092 | diag::err_typecheck_nonviable_condition_incomplete, |
9093 | OnlyArg->getType(), Args[0]->getSourceRange())) |
9094 | S.Diag(Kind.getLocation(), diag::err_typecheck_nonviable_condition) |
9095 | << (Entity.getKind() == InitializedEntity::EK_Result) |
9096 | << OnlyArg->getType() << Args[0]->getSourceRange() |
9097 | << DestType.getNonReferenceType(); |
9098 | |
9099 | FailedCandidateSet.NoteCandidates(S, Args, Cands); |
9100 | break; |
9101 | } |
9102 | case OR_Deleted: { |
9103 | S.Diag(Kind.getLocation(), diag::err_typecheck_deleted_function) |
9104 | << OnlyArg->getType() << DestType.getNonReferenceType() |
9105 | << Args[0]->getSourceRange(); |
9106 | OverloadCandidateSet::iterator Best; |
9107 | OverloadingResult Ovl |
9108 | = FailedCandidateSet.BestViableFunction(S, Kind.getLocation(), Best); |
9109 | if (Ovl == OR_Deleted) { |
9110 | S.NoteDeletedFunction(Best->Function); |
9111 | } else { |
9112 | llvm_unreachable("Inconsistent overload resolution?"); |
9113 | } |
9114 | break; |
9115 | } |
9116 | |
9117 | case OR_Success: |
9118 | llvm_unreachable("Conversion did not fail!"); |
9119 | } |
9120 | break; |
9121 | |
9122 | case FK_NonConstLValueReferenceBindingToTemporary: |
9123 | if (isa<InitListExpr>(Args[0])) { |
9124 | S.Diag(Kind.getLocation(), |
9125 | diag::err_lvalue_reference_bind_to_initlist) |
9126 | << DestType.getNonReferenceType().isVolatileQualified() |
9127 | << DestType.getNonReferenceType() |
9128 | << Args[0]->getSourceRange(); |
9129 | break; |
9130 | } |
9131 | LLVM_FALLTHROUGH; |
9132 | |
9133 | case FK_NonConstLValueReferenceBindingToUnrelated: |
9134 | S.Diag(Kind.getLocation(), |
9135 | Failure == FK_NonConstLValueReferenceBindingToTemporary |
9136 | ? diag::err_lvalue_reference_bind_to_temporary |
9137 | : diag::err_lvalue_reference_bind_to_unrelated) |
9138 | << DestType.getNonReferenceType().isVolatileQualified() |
9139 | << DestType.getNonReferenceType() |
9140 | << OnlyArg->getType() |
9141 | << Args[0]->getSourceRange(); |
9142 | break; |
9143 | |
9144 | case FK_NonConstLValueReferenceBindingToBitfield: { |
9145 | |
9146 | FieldDecl *BitField = Args[0]->getSourceBitField(); |
9147 | S.Diag(Kind.getLocation(), diag::err_reference_bind_to_bitfield) |
9148 | << DestType.isVolatileQualified() |
9149 | << (BitField ? BitField->getDeclName() : DeclarationName()) |
9150 | << (BitField != nullptr) |
9151 | << Args[0]->getSourceRange(); |
9152 | if (BitField) |
9153 | S.Diag(BitField->getLocation(), diag::note_bitfield_decl); |
9154 | break; |
9155 | } |
9156 | |
9157 | case FK_NonConstLValueReferenceBindingToVectorElement: |
9158 | S.Diag(Kind.getLocation(), diag::err_reference_bind_to_vector_element) |
9159 | << DestType.isVolatileQualified() |
9160 | << Args[0]->getSourceRange(); |
9161 | break; |
9162 | |
9163 | case FK_NonConstLValueReferenceBindingToMatrixElement: |
9164 | S.Diag(Kind.getLocation(), diag::err_reference_bind_to_matrix_element) |
9165 | << DestType.isVolatileQualified() << Args[0]->getSourceRange(); |
9166 | break; |
9167 | |
9168 | case FK_RValueReferenceBindingToLValue: |
9169 | S.Diag(Kind.getLocation(), diag::err_lvalue_to_rvalue_ref) |
9170 | << DestType.getNonReferenceType() << OnlyArg->getType() |
9171 | << Args[0]->getSourceRange(); |
9172 | break; |
9173 | |
9174 | case FK_ReferenceAddrspaceMismatchTemporary: |
9175 | S.Diag(Kind.getLocation(), diag::err_reference_bind_temporary_addrspace) |
9176 | << DestType << Args[0]->getSourceRange(); |
9177 | break; |
9178 | |
9179 | case FK_ReferenceInitDropsQualifiers: { |
9180 | QualType SourceType = OnlyArg->getType(); |
9181 | QualType NonRefType = DestType.getNonReferenceType(); |
9182 | Qualifiers DroppedQualifiers = |
9183 | SourceType.getQualifiers() - NonRefType.getQualifiers(); |
9184 | |
9185 | if (!NonRefType.getQualifiers().isAddressSpaceSupersetOf( |
9186 | SourceType.getQualifiers())) |
9187 | S.Diag(Kind.getLocation(), diag::err_reference_bind_drops_quals) |
9188 | << NonRefType << SourceType << 1 |
9189 | << Args[0]->getSourceRange(); |
9190 | else if (DroppedQualifiers.hasQualifiers()) |
9191 | S.Diag(Kind.getLocation(), diag::err_reference_bind_drops_quals) |
9192 | << NonRefType << SourceType << 0 |
9193 | << Qualifiers::fromCVRMask(DroppedQualifiers.getCVRQualifiers()) |
9194 | << DroppedQualifiers.getCVRQualifiers() << Args[0]->getSourceRange(); |
9195 | else |
9196 | |
9197 | |
9198 | S.Diag(Kind.getLocation(), diag::err_reference_bind_drops_quals) |
9199 | << NonRefType << SourceType << 2 |
9200 | << Args[0]->getSourceRange(); |
9201 | break; |
9202 | } |
9203 | |
9204 | case FK_ReferenceInitFailed: |
9205 | S.Diag(Kind.getLocation(), diag::err_reference_bind_failed) |
9206 | << DestType.getNonReferenceType() |
9207 | << DestType.getNonReferenceType()->isIncompleteType() |
9208 | << OnlyArg->isLValue() |
9209 | << OnlyArg->getType() |
9210 | << Args[0]->getSourceRange(); |
9211 | emitBadConversionNotes(S, Entity, Args[0]); |
9212 | break; |
9213 | |
9214 | case FK_ConversionFailed: { |
9215 | QualType FromType = OnlyArg->getType(); |
9216 | PartialDiagnostic PDiag = S.PDiag(diag::err_init_conversion_failed) |
9217 | << (int)Entity.getKind() |
9218 | << DestType |
9219 | << OnlyArg->isLValue() |
9220 | << FromType |
9221 | << Args[0]->getSourceRange(); |
9222 | S.HandleFunctionTypeMismatch(PDiag, FromType, DestType); |
9223 | S.Diag(Kind.getLocation(), PDiag); |
9224 | emitBadConversionNotes(S, Entity, Args[0]); |
9225 | break; |
9226 | } |
9227 | |
9228 | case FK_ConversionFromPropertyFailed: |
9229 | |
9230 | break; |
9231 | |
9232 | case FK_TooManyInitsForScalar: { |
9233 | SourceRange R; |
9234 | |
9235 | auto *InitList = dyn_cast<InitListExpr>(Args[0]); |
9236 | if (InitList && InitList->getNumInits() >= 1) { |
9237 | R = SourceRange(InitList->getInit(0)->getEndLoc(), InitList->getEndLoc()); |
9238 | } else { |
9239 | assert(Args.size() > 1 && "Expected multiple initializers!"); |
9240 | R = SourceRange(Args.front()->getEndLoc(), Args.back()->getEndLoc()); |
9241 | } |
9242 | |
9243 | R.setBegin(S.getLocForEndOfToken(R.getBegin())); |
9244 | if (Kind.isCStyleOrFunctionalCast()) |
9245 | S.Diag(Kind.getLocation(), diag::err_builtin_func_cast_more_than_one_arg) |
9246 | << R; |
9247 | else |
9248 | S.Diag(Kind.getLocation(), diag::err_excess_initializers) |
9249 | << 2 << R; |
9250 | break; |
9251 | } |
9252 | |
9253 | case FK_ParenthesizedListInitForScalar: |
9254 | S.Diag(Kind.getLocation(), diag::err_list_init_in_parens) |
9255 | << 0 << Entity.getType() << Args[0]->getSourceRange(); |
9256 | break; |
9257 | |
9258 | case FK_ReferenceBindingToInitList: |
9259 | S.Diag(Kind.getLocation(), diag::err_reference_bind_init_list) |
9260 | << DestType.getNonReferenceType() << Args[0]->getSourceRange(); |
9261 | break; |
9262 | |
9263 | case FK_InitListBadDestinationType: |
9264 | S.Diag(Kind.getLocation(), diag::err_init_list_bad_dest_type) |
9265 | << (DestType->isRecordType()) << DestType << Args[0]->getSourceRange(); |
9266 | break; |
9267 | |
9268 | case FK_ListConstructorOverloadFailed: |
9269 | case FK_ConstructorOverloadFailed: { |
9270 | SourceRange ArgsRange; |
9271 | if (Args.size()) |
9272 | ArgsRange = |
9273 | SourceRange(Args.front()->getBeginLoc(), Args.back()->getEndLoc()); |
9274 | |
9275 | if (Failure == FK_ListConstructorOverloadFailed) { |
9276 | assert(Args.size() == 1 && |
9277 | "List construction from other than 1 argument."); |
9278 | InitListExpr *InitList = cast<InitListExpr>(Args[0]); |
9279 | Args = MultiExprArg(InitList->getInits(), InitList->getNumInits()); |
9280 | } |
9281 | |
9282 | |
9283 | |
9284 | switch (FailedOverloadResult) { |
9285 | case OR_Ambiguous: |
9286 | FailedCandidateSet.NoteCandidates( |
9287 | PartialDiagnosticAt(Kind.getLocation(), |
9288 | S.PDiag(diag::err_ovl_ambiguous_init) |
9289 | << DestType << ArgsRange), |
9290 | S, OCD_AmbiguousCandidates, Args); |
9291 | break; |
9292 | |
9293 | case OR_No_Viable_Function: |
9294 | if (Kind.getKind() == InitializationKind::IK_Default && |
9295 | (Entity.getKind() == InitializedEntity::EK_Base || |
9296 | Entity.getKind() == InitializedEntity::EK_Member) && |
9297 | isa<CXXConstructorDecl>(S.CurContext)) { |
9298 | |
9299 | |
9300 | |
9301 | |
9302 | CXXConstructorDecl *Constructor |
9303 | = cast<CXXConstructorDecl>(S.CurContext); |
9304 | const CXXRecordDecl *InheritedFrom = nullptr; |
9305 | if (auto Inherited = Constructor->getInheritedConstructor()) |
9306 | InheritedFrom = Inherited.getShadowDecl()->getNominatedBaseClass(); |
9307 | if (Entity.getKind() == InitializedEntity::EK_Base) { |
9308 | S.Diag(Kind.getLocation(), diag::err_missing_default_ctor) |
9309 | << (InheritedFrom ? 2 : Constructor->isImplicit() ? 1 : 0) |
9310 | << S.Context.getTypeDeclType(Constructor->getParent()) |
9311 | << 0 |
9312 | << Entity.getType() |
9313 | << InheritedFrom; |
9314 | |
9315 | RecordDecl *BaseDecl |
9316 | = Entity.getBaseSpecifier()->getType()->castAs<RecordType>() |
9317 | ->getDecl(); |
9318 | S.Diag(BaseDecl->getLocation(), diag::note_previous_decl) |
9319 | << S.Context.getTagDeclType(BaseDecl); |
9320 | } else { |
9321 | S.Diag(Kind.getLocation(), diag::err_missing_default_ctor) |
9322 | << (InheritedFrom ? 2 : Constructor->isImplicit() ? 1 : 0) |
9323 | << S.Context.getTypeDeclType(Constructor->getParent()) |
9324 | << 1 |
9325 | << Entity.getName() |
9326 | << InheritedFrom; |
9327 | S.Diag(Entity.getDecl()->getLocation(), |
9328 | diag::note_member_declared_at); |
9329 | |
9330 | if (const RecordType *Record |
9331 | = Entity.getType()->getAs<RecordType>()) |
9332 | S.Diag(Record->getDecl()->getLocation(), |
9333 | diag::note_previous_decl) |
9334 | << S.Context.getTagDeclType(Record->getDecl()); |
9335 | } |
9336 | break; |
9337 | } |
9338 | |
9339 | FailedCandidateSet.NoteCandidates( |
9340 | PartialDiagnosticAt( |
9341 | Kind.getLocation(), |
9342 | S.PDiag(diag::err_ovl_no_viable_function_in_init) |
9343 | << DestType << ArgsRange), |
9344 | S, OCD_AllCandidates, Args); |
9345 | break; |
9346 | |
9347 | case OR_Deleted: { |
9348 | OverloadCandidateSet::iterator Best; |
9349 | OverloadingResult Ovl |
9350 | = FailedCandidateSet.BestViableFunction(S, Kind.getLocation(), Best); |
9351 | if (Ovl != OR_Deleted) { |
9352 | S.Diag(Kind.getLocation(), diag::err_ovl_deleted_init) |
9353 | << DestType << ArgsRange; |
9354 | llvm_unreachable("Inconsistent overload resolution?"); |
9355 | break; |
9356 | } |
9357 | |
9358 | |
9359 | |
9360 | |
9361 | if (S.isImplicitlyDeleted(Best->Function)) |
9362 | S.Diag(Kind.getLocation(), diag::err_ovl_deleted_special_init) |
9363 | << S.getSpecialMember(cast<CXXMethodDecl>(Best->Function)) |
9364 | << DestType << ArgsRange; |
9365 | else |
9366 | S.Diag(Kind.getLocation(), diag::err_ovl_deleted_init) |
9367 | << DestType << ArgsRange; |
9368 | |
9369 | S.NoteDeletedFunction(Best->Function); |
9370 | break; |
9371 | } |
9372 | |
9373 | case OR_Success: |
9374 | llvm_unreachable("Conversion did not fail!"); |
9375 | } |
9376 | } |
9377 | break; |
9378 | |
9379 | case FK_DefaultInitOfConst: |
9380 | if (Entity.getKind() == InitializedEntity::EK_Member && |
9381 | isa<CXXConstructorDecl>(S.CurContext)) { |
9382 | |
9383 | |
9384 | |
9385 | CXXConstructorDecl *Constructor = cast<CXXConstructorDecl>(S.CurContext); |
9386 | S.Diag(Kind.getLocation(), diag::err_uninitialized_member_in_ctor) |
9387 | << (Constructor->getInheritedConstructor() ? 2 : |
9388 | Constructor->isImplicit() ? 1 : 0) |
9389 | << S.Context.getTypeDeclType(Constructor->getParent()) |
9390 | << 1 |
9391 | << Entity.getName(); |
9392 | S.Diag(Entity.getDecl()->getLocation(), diag::note_previous_decl) |
9393 | << Entity.getName(); |
9394 | } else { |
9395 | S.Diag(Kind.getLocation(), diag::err_default_init_const) |
9396 | << DestType << (bool)DestType->getAs<RecordType>(); |
9397 | } |
9398 | break; |
9399 | |
9400 | case FK_Incomplete: |
9401 | S.RequireCompleteType(Kind.getLocation(), FailedIncompleteType, |
9402 | diag::err_init_incomplete_type); |
9403 | break; |
9404 | |
9405 | case FK_ListInitializationFailed: { |
9406 | |
9407 | InitListExpr *InitList = cast<InitListExpr>(Args[0]); |
9408 | diagnoseListInit(S, Entity, InitList); |
9409 | break; |
9410 | } |
9411 | |
9412 | case FK_PlaceholderType: { |
9413 | |
9414 | break; |
9415 | } |
9416 | |
9417 | case FK_ExplicitConstructor: { |
9418 | S.Diag(Kind.getLocation(), diag::err_selected_explicit_constructor) |
9419 | << Args[0]->getSourceRange(); |
9420 | OverloadCandidateSet::iterator Best; |
9421 | OverloadingResult Ovl |
9422 | = FailedCandidateSet.BestViableFunction(S, Kind.getLocation(), Best); |
9423 | (void)Ovl; |
9424 | assert(Ovl == OR_Success && "Inconsistent overload resolution"); |
9425 | CXXConstructorDecl *CtorDecl = cast<CXXConstructorDecl>(Best->Function); |
9426 | S.Diag(CtorDecl->getLocation(), |
9427 | diag::note_explicit_ctor_deduction_guide_here) << false; |
9428 | break; |
9429 | } |
9430 | } |
9431 | |
9432 | PrintInitLocationNote(S, Entity); |
9433 | return true; |
9434 | } |
9435 | |
9436 | void InitializationSequence::dump(raw_ostream &OS) const { |
9437 | switch (SequenceKind) { |
9438 | case FailedSequence: { |
9439 | OS << "Failed sequence: "; |
9440 | switch (Failure) { |
9441 | case FK_TooManyInitsForReference: |
9442 | OS << "too many initializers for reference"; |
9443 | break; |
9444 | |
9445 | case FK_ParenthesizedListInitForReference: |
9446 | OS << "parenthesized list init for reference"; |
9447 | break; |
9448 | |
9449 | case FK_ArrayNeedsInitList: |
9450 | OS << "array requires initializer list"; |
9451 | break; |
9452 | |
9453 | case FK_AddressOfUnaddressableFunction: |
9454 | OS << "address of unaddressable function was taken"; |
9455 | break; |
9456 | |
9457 | case FK_ArrayNeedsInitListOrStringLiteral: |
9458 | OS << "array requires initializer list or string literal"; |
9459 | break; |
9460 | |
9461 | case FK_ArrayNeedsInitListOrWideStringLiteral: |
9462 | OS << "array requires initializer list or wide string literal"; |
9463 | break; |
9464 | |
9465 | case FK_NarrowStringIntoWideCharArray: |
9466 | OS << "narrow string into wide char array"; |
9467 | break; |
9468 | |
9469 | case FK_WideStringIntoCharArray: |
9470 | OS << "wide string into char array"; |
9471 | break; |
9472 | |
9473 | case FK_IncompatWideStringIntoWideChar: |
9474 | OS << "incompatible wide string into wide char array"; |
9475 | break; |
9476 | |
9477 | case FK_PlainStringIntoUTF8Char: |
9478 | OS << "plain string literal into char8_t array"; |
9479 | break; |
9480 | |
9481 | case FK_UTF8StringIntoPlainChar: |
9482 | OS << "u8 string literal into char array"; |
9483 | break; |
9484 | |
9485 | case FK_ArrayTypeMismatch: |
9486 | OS << "array type mismatch"; |
9487 | break; |
9488 | |
9489 | case FK_NonConstantArrayInit: |
9490 | OS << "non-constant array initializer"; |
9491 | break; |
9492 | |
9493 | case FK_AddressOfOverloadFailed: |
9494 | OS << "address of overloaded function failed"; |
9495 | break; |
9496 | |
9497 | case FK_ReferenceInitOverloadFailed: |
9498 | OS << "overload resolution for reference initialization failed"; |
9499 | break; |
9500 | |
9501 | case FK_NonConstLValueReferenceBindingToTemporary: |
9502 | OS << "non-const lvalue reference bound to temporary"; |
9503 | break; |
9504 | |
9505 | case FK_NonConstLValueReferenceBindingToBitfield: |
9506 | OS << "non-const lvalue reference bound to bit-field"; |
9507 | break; |
9508 | |
9509 | case FK_NonConstLValueReferenceBindingToVectorElement: |
9510 | OS << "non-const lvalue reference bound to vector element"; |
9511 | break; |
9512 | |
9513 | case FK_NonConstLValueReferenceBindingToMatrixElement: |
9514 | OS << "non-const lvalue reference bound to matrix element"; |
9515 | break; |
9516 | |
9517 | case FK_NonConstLValueReferenceBindingToUnrelated: |
9518 | OS << "non-const lvalue reference bound to unrelated type"; |
9519 | break; |
9520 | |
9521 | case FK_RValueReferenceBindingToLValue: |
9522 | OS << "rvalue reference bound to an lvalue"; |
9523 | break; |
9524 | |
9525 | case FK_ReferenceInitDropsQualifiers: |
9526 | OS << "reference initialization drops qualifiers"; |
9527 | break; |
9528 | |
9529 | case FK_ReferenceAddrspaceMismatchTemporary: |
9530 | OS << "reference with mismatching address space bound to temporary"; |
9531 | break; |
9532 | |
9533 | case FK_ReferenceInitFailed: |
9534 | OS << "reference initialization failed"; |
9535 | break; |
9536 | |
9537 | case FK_ConversionFailed: |
9538 | OS << "conversion failed"; |
9539 | break; |
9540 | |
9541 | case FK_ConversionFromPropertyFailed: |
9542 | OS << "conversion from property failed"; |
9543 | break; |
9544 | |
9545 | case FK_TooManyInitsForScalar: |
9546 | OS << "too many initializers for scalar"; |
9547 | break; |
9548 | |
9549 | case FK_ParenthesizedListInitForScalar: |
9550 | OS << "parenthesized list init for reference"; |
9551 | break; |
9552 | |
9553 | case FK_ReferenceBindingToInitList: |
9554 | OS << "referencing binding to initializer list"; |
9555 | break; |
9556 | |
9557 | case FK_InitListBadDestinationType: |
9558 | OS << "initializer list for non-aggregate, non-scalar type"; |
9559 | break; |
9560 | |
9561 | case FK_UserConversionOverloadFailed: |
9562 | OS << "overloading failed for user-defined conversion"; |
9563 | break; |
9564 | |
9565 | case FK_ConstructorOverloadFailed: |
9566 | OS << "constructor overloading failed"; |
9567 | break; |
9568 | |
9569 | case FK_DefaultInitOfConst: |
9570 | OS << "default initialization of a const variable"; |
9571 | break; |
9572 | |
9573 | case FK_Incomplete: |
9574 | OS << "initialization of incomplete type"; |
9575 | break; |
9576 | |
9577 | case FK_ListInitializationFailed: |
9578 | OS << "list initialization checker failure"; |
9579 | break; |
9580 | |
9581 | case FK_VariableLengthArrayHasInitializer: |
9582 | OS << "variable length array has an initializer"; |
9583 | break; |
9584 | |
9585 | case FK_PlaceholderType: |
9586 | OS << "initializer expression isn't contextually valid"; |
9587 | break; |
9588 | |
9589 | case FK_ListConstructorOverloadFailed: |
9590 | OS << "list constructor overloading failed"; |
9591 | break; |
9592 | |
9593 | case FK_ExplicitConstructor: |
9594 | OS << "list copy initialization chose explicit constructor"; |
9595 | break; |
9596 | } |
9597 | OS << '\n'; |
9598 | return; |
9599 | } |
9600 | |
9601 | case DependentSequence: |
9602 | OS << "Dependent sequence\n"; |
9603 | return; |
9604 | |
9605 | case NormalSequence: |
9606 | OS << "Normal sequence: "; |
9607 | break; |
9608 | } |
9609 | |
9610 | for (step_iterator S = step_begin(), SEnd = step_end(); S != SEnd; ++S) { |
9611 | if (S != step_begin()) { |
9612 | OS << " -> "; |
9613 | } |
9614 | |
9615 | switch (S->Kind) { |
9616 | case SK_ResolveAddressOfOverloadedFunction: |
9617 | OS << "resolve address of overloaded function"; |
9618 | break; |
9619 | |
9620 | case SK_CastDerivedToBasePRValue: |
9621 | OS << "derived-to-base (prvalue)"; |
9622 | break; |
9623 | |
9624 | case SK_CastDerivedToBaseXValue: |
9625 | OS << "derived-to-base (xvalue)"; |
9626 | break; |
9627 | |
9628 | case SK_CastDerivedToBaseLValue: |
9629 | OS << "derived-to-base (lvalue)"; |
9630 | break; |
9631 | |
9632 | case SK_BindReference: |
9633 | OS << "bind reference to lvalue"; |
9634 | break; |
9635 | |
9636 | case SK_BindReferenceToTemporary: |
9637 | OS << "bind reference to a temporary"; |
9638 | break; |
9639 | |
9640 | case SK_FinalCopy: |
9641 | OS << "final copy in class direct-initialization"; |
9642 | break; |
9643 | |
9644 | case SK_ExtraneousCopyToTemporary: |
9645 | OS << "extraneous C++03 copy to temporary"; |
9646 | break; |
9647 | |
9648 | case SK_UserConversion: |
9649 | OS << "user-defined conversion via " << *S->Function.Function; |
9650 | break; |
9651 | |
9652 | case SK_QualificationConversionPRValue: |
9653 | OS << "qualification conversion (prvalue)"; |
9654 | break; |
9655 | |
9656 | case SK_QualificationConversionXValue: |
9657 | OS << "qualification conversion (xvalue)"; |
9658 | break; |
9659 | |
9660 | case SK_QualificationConversionLValue: |
9661 | OS << "qualification conversion (lvalue)"; |
9662 | break; |
9663 | |
9664 | case SK_FunctionReferenceConversion: |
9665 | OS << "function reference conversion"; |
9666 | break; |
9667 | |
9668 | case SK_AtomicConversion: |
9669 | OS << "non-atomic-to-atomic conversion"; |
9670 | break; |
9671 | |
9672 | case SK_ConversionSequence: |
9673 | OS << "implicit conversion sequence ("; |
9674 | S->ICS->dump(); |
9675 | OS << ")"; |
9676 | break; |
9677 | |
9678 | case SK_ConversionSequenceNoNarrowing: |
9679 | OS << "implicit conversion sequence with narrowing prohibited ("; |
9680 | S->ICS->dump(); |
9681 | OS << ")"; |
9682 | break; |
9683 | |
9684 | case SK_ListInitialization: |
9685 | OS << "list aggregate initialization"; |
9686 | break; |
9687 | |
9688 | case SK_UnwrapInitList: |
9689 | OS << "unwrap reference initializer list"; |
9690 | break; |
9691 | |
9692 | case SK_RewrapInitList: |
9693 | OS << "rewrap reference initializer list"; |
9694 | break; |
9695 | |
9696 | case SK_ConstructorInitialization: |
9697 | OS << "constructor initialization"; |
9698 | break; |
9699 | |
9700 | case SK_ConstructorInitializationFromList: |
9701 | OS << "list initialization via constructor"; |
9702 | break; |
9703 | |
9704 | case SK_ZeroInitialization: |
9705 | OS << "zero initialization"; |
9706 | break; |
9707 | |
9708 | case SK_CAssignment: |
9709 | OS << "C assignment"; |
9710 | break; |
9711 | |
9712 | case SK_StringInit: |
9713 | OS << "string initialization"; |
9714 | break; |
9715 | |
9716 | case SK_ObjCObjectConversion: |
9717 | OS << "Objective-C object conversion"; |
9718 | break; |
9719 | |
9720 | case SK_ArrayLoopIndex: |
9721 | OS << "indexing for array initialization loop"; |
9722 | break; |
9723 | |
9724 | case SK_ArrayLoopInit: |
9725 | OS << "array initialization loop"; |
9726 | break; |
9727 | |
9728 | case SK_ArrayInit: |
9729 | OS << "array initialization"; |
9730 | break; |
9731 | |
9732 | case SK_GNUArrayInit: |
9733 | OS << "array initialization (GNU extension)"; |
9734 | break; |
9735 | |
9736 | case SK_ParenthesizedArrayInit: |
9737 | OS << "parenthesized array initialization"; |
9738 | break; |
9739 | |
9740 | case SK_PassByIndirectCopyRestore: |
9741 | OS << "pass by indirect copy and restore"; |
9742 | break; |
9743 | |
9744 | case SK_PassByIndirectRestore: |
9745 | OS << "pass by indirect restore"; |
9746 | break; |
9747 | |
9748 | case SK_ProduceObjCObject: |
9749 | OS << "Objective-C object retension"; |
9750 | break; |
9751 | |
9752 | case SK_StdInitializerList: |
9753 | OS << "std::initializer_list from initializer list"; |
9754 | break; |
9755 | |
9756 | case SK_StdInitializerListConstructorCall: |
9757 | OS << "list initialization from std::initializer_list"; |
9758 | break; |
9759 | |
9760 | case SK_OCLSamplerInit: |
9761 | OS << "OpenCL sampler_t from integer constant"; |
9762 | break; |
9763 | |
9764 | case SK_OCLZeroOpaqueType: |
9765 | OS << "OpenCL opaque type from zero"; |
9766 | break; |
9767 | } |
9768 | |
9769 | OS << " [" << S->Type.getAsString() << ']'; |
9770 | } |
9771 | |
9772 | OS << '\n'; |
9773 | } |
9774 | |
9775 | void InitializationSequence::dump() const { |
9776 | dump(llvm::errs()); |
9777 | } |
9778 | |
9779 | static bool NarrowingErrs(const LangOptions &L) { |
9780 | return L.CPlusPlus11 && |
9781 | (!L.MicrosoftExt || L.isCompatibleWithMSVC(LangOptions::MSVC2015)); |
9782 | } |
9783 | |
9784 | static void DiagnoseNarrowingInInitList(Sema &S, |
9785 | const ImplicitConversionSequence &ICS, |
9786 | QualType PreNarrowingType, |
9787 | QualType EntityType, |
9788 | const Expr *PostInit) { |
9789 | const StandardConversionSequence *SCS = nullptr; |
9790 | switch (ICS.getKind()) { |
9791 | case ImplicitConversionSequence::StandardConversion: |
9792 | SCS = &ICS.Standard; |
9793 | break; |
9794 | case ImplicitConversionSequence::UserDefinedConversion: |
9795 | SCS = &ICS.UserDefined.After; |
9796 | break; |
9797 | case ImplicitConversionSequence::AmbiguousConversion: |
9798 | case ImplicitConversionSequence::EllipsisConversion: |
9799 | case ImplicitConversionSequence::BadConversion: |
9800 | return; |
9801 | } |
9802 | |
9803 | |
9804 | APValue ConstantValue; |
9805 | QualType ConstantType; |
9806 | switch (SCS->getNarrowingKind(S.Context, PostInit, ConstantValue, |
9807 | ConstantType)) { |
9808 | case NK_Not_Narrowing: |
9809 | case NK_Dependent_Narrowing: |
9810 | |
9811 | return; |
9812 | |
9813 | case NK_Type_Narrowing: |
9814 | |
9815 | |
9816 | |
9817 | S.Diag(PostInit->getBeginLoc(), NarrowingErrs(S.getLangOpts()) |
9818 | ? diag::ext_init_list_type_narrowing |
9819 | : diag::warn_init_list_type_narrowing) |
9820 | << PostInit->getSourceRange() |
9821 | << PreNarrowingType.getLocalUnqualifiedType() |
9822 | << EntityType.getLocalUnqualifiedType(); |
9823 | break; |
9824 | |
9825 | case NK_Constant_Narrowing: |
9826 | |
9827 | S.Diag(PostInit->getBeginLoc(), |
9828 | NarrowingErrs(S.getLangOpts()) |
9829 | ? diag::ext_init_list_constant_narrowing |
9830 | : diag::warn_init_list_constant_narrowing) |
9831 | << PostInit->getSourceRange() |
9832 | << ConstantValue.getAsString(S.getASTContext(), ConstantType) |
9833 | << EntityType.getLocalUnqualifiedType(); |
9834 | break; |
9835 | |
9836 | case NK_Variable_Narrowing: |
9837 | |
9838 | S.Diag(PostInit->getBeginLoc(), |
9839 | NarrowingErrs(S.getLangOpts()) |
9840 | ? diag::ext_init_list_variable_narrowing |
9841 | : diag::warn_init_list_variable_narrowing) |
9842 | << PostInit->getSourceRange() |
9843 | << PreNarrowingType.getLocalUnqualifiedType() |
9844 | << EntityType.getLocalUnqualifiedType(); |
9845 | break; |
9846 | } |
9847 | |
9848 | SmallString<128> StaticCast; |
9849 | llvm::raw_svector_ostream OS(StaticCast); |
9850 | OS << "static_cast<"; |
9851 | if (const TypedefType *TT = EntityType->getAs<TypedefType>()) { |
9852 | |
9853 | |
9854 | |
9855 | |
9856 | |
9857 | OS << *TT->getDecl(); |
9858 | } else if (const BuiltinType *BT = EntityType->getAs<BuiltinType>()) |
9859 | OS << BT->getName(S.getLangOpts()); |
9860 | else { |
9861 | |
9862 | |
9863 | return; |
9864 | } |
9865 | OS << ">("; |
9866 | S.Diag(PostInit->getBeginLoc(), diag::note_init_list_narrowing_silence) |
9867 | << PostInit->getSourceRange() |
9868 | << FixItHint::CreateInsertion(PostInit->getBeginLoc(), OS.str()) |
9869 | << FixItHint::CreateInsertion( |
9870 | S.getLocForEndOfToken(PostInit->getEndLoc()), ")"); |
9871 | } |
9872 | |
9873 | |
9874 | |
9875 | |
9876 | bool |
9877 | Sema::CanPerformCopyInitialization(const InitializedEntity &Entity, |
9878 | ExprResult Init) { |
9879 | if (Init.isInvalid()) |
9880 | return false; |
9881 | |
9882 | Expr *InitE = Init.get(); |
9883 | assert(InitE && "No initialization expression"); |
9884 | |
9885 | InitializationKind Kind = |
9886 | InitializationKind::CreateCopy(InitE->getBeginLoc(), SourceLocation()); |
9887 | InitializationSequence Seq(*this, Entity, Kind, InitE); |
9888 | return !Seq.Failed(); |
9889 | } |
9890 | |
9891 | ExprResult |
9892 | Sema::PerformCopyInitialization(const InitializedEntity &Entity, |
9893 | SourceLocation EqualLoc, |
9894 | ExprResult Init, |
9895 | bool TopLevelOfInitList, |
9896 | bool AllowExplicit) { |
9897 | if (Init.isInvalid()) |
9898 | return ExprError(); |
9899 | |
9900 | Expr *InitE = Init.get(); |
9901 | assert(InitE && "No initialization expression?"); |
9902 | |
9903 | if (EqualLoc.isInvalid()) |
9904 | EqualLoc = InitE->getBeginLoc(); |
9905 | |
9906 | InitializationKind Kind = InitializationKind::CreateCopy( |
9907 | InitE->getBeginLoc(), EqualLoc, AllowExplicit); |
9908 | InitializationSequence Seq(*this, Entity, Kind, InitE, TopLevelOfInitList); |
9909 | |
9910 | |
9911 | const bool ShouldTrackCopy = |
9912 | Entity.isParameterKind() && Seq.isConstructorInitialization(); |
9913 | if (ShouldTrackCopy) { |
9914 | if (llvm::find(CurrentParameterCopyTypes, Entity.getType()) != |
9915 | CurrentParameterCopyTypes.end()) { |
9916 | Seq.SetOverloadFailure( |
9917 | InitializationSequence::FK_ConstructorOverloadFailed, |
9918 | OR_No_Viable_Function); |
9919 | |
9920 | |
9921 | |
9922 | const auto LastStep = Seq.step_end() - 1; |
9923 | assert(LastStep->Kind == |
9924 | InitializationSequence::SK_ConstructorInitialization); |
9925 | const FunctionDecl *Function = LastStep->Function.Function; |
9926 | auto Candidate = |
9927 | llvm::find_if(Seq.getFailedCandidateSet(), |
9928 | [Function](const OverloadCandidate &Candidate) -> bool { |
9929 | return Candidate.Viable && |
9930 | Candidate.Function == Function && |
9931 | Candidate.Conversions.size() > 0; |
9932 | }); |
9933 | if (Candidate != Seq.getFailedCandidateSet().end() && |
9934 | Function->getNumParams() > 0) { |
9935 | Candidate->Viable = false; |
9936 | Candidate->FailureKind = ovl_fail_bad_conversion; |
9937 | Candidate->Conversions[0].setBad(BadConversionSequence::no_conversion, |
9938 | InitE, |
9939 | Function->getParamDecl(0)->getType()); |
9940 | } |
9941 | } |
9942 | CurrentParameterCopyTypes.push_back(Entity.getType()); |
9943 | } |
9944 | |
9945 | ExprResult Result = Seq.Perform(*this, Entity, Kind, InitE); |
9946 | |
9947 | if (ShouldTrackCopy) |
9948 | CurrentParameterCopyTypes.pop_back(); |
9949 | |
9950 | return Result; |
9951 | } |
9952 | |
9953 | |
9954 | static bool isOrIsDerivedFromSpecializationOf(CXXRecordDecl *RD, |
9955 | ClassTemplateDecl *CTD) { |
9956 | auto NotSpecialization = [&] (const CXXRecordDecl *Candidate) { |
9957 | auto *CTSD = dyn_cast<ClassTemplateSpecializationDecl>(Candidate); |
9958 | return !CTSD || !declaresSameEntity(CTSD->getSpecializedTemplate(), CTD); |
9959 | }; |
9960 | return !(NotSpecialization(RD) && RD->forallBases(NotSpecialization)); |
9961 | } |
9962 | |
9963 | QualType Sema::DeduceTemplateSpecializationFromInitializer( |
9964 | TypeSourceInfo *TSInfo, const InitializedEntity &Entity, |
9965 | const InitializationKind &Kind, MultiExprArg Inits) { |
9966 | auto *DeducedTST = dyn_cast<DeducedTemplateSpecializationType>( |
9967 | TSInfo->getType()->getContainedDeducedType()); |
9968 | assert(DeducedTST && "not a deduced template specialization type"); |
9969 | |
9970 | auto TemplateName = DeducedTST->getTemplateName(); |
9971 | if (TemplateName.isDependent()) |
9972 | return SubstAutoType(TSInfo->getType(), Context.DependentTy); |
9973 | |
9974 | |
9975 | auto *Template = |
9976 | dyn_cast_or_null<ClassTemplateDecl>(TemplateName.getAsTemplateDecl()); |
9977 | if (!Template) { |
9978 | Diag(Kind.getLocation(), |
9979 | diag::err_deduced_non_class_template_specialization_type) |
9980 | << (int)getTemplateNameKindForDiagnostics(TemplateName) << TemplateName; |
9981 | if (auto *TD = TemplateName.getAsTemplateDecl()) |
9982 | Diag(TD->getLocation(), diag::note_template_decl_here); |
9983 | return QualType(); |
9984 | } |
9985 | |
9986 | |
9987 | if (Expr::hasAnyTypeDependentArguments(Inits)) { |
9988 | Diag(TSInfo->getTypeLoc().getBeginLoc(), |
9989 | diag::warn_cxx14_compat_class_template_argument_deduction) |
9990 | << TSInfo->getTypeLoc().getSourceRange() << 0; |
9991 | return SubstAutoType(TSInfo->getType(), Context.DependentTy); |
9992 | } |
9993 | |
9994 | |
9995 | |
9996 | |
9997 | |
9998 | |
9999 | |
10000 | |
10001 | |
10002 | |
10003 | |
10004 | |
10005 | |
10006 | DeclarationNameInfo NameInfo( |
10007 | Context.DeclarationNames.getCXXDeductionGuideName(Template), |
10008 | TSInfo->getTypeLoc().getEndLoc()); |
10009 | LookupResult Guides(*this, NameInfo, LookupOrdinaryName); |
10010 | LookupQualifiedName(Guides, Template->getDeclContext()); |
10011 | |
10012 | |
10013 | |
10014 | Guides.suppressDiagnostics(); |
10015 | |
10016 | |
10017 | InitListExpr *ListInit = |
10018 | (Inits.size() == 1 && Kind.getKind() != InitializationKind::IK_Direct) |
10019 | ? dyn_cast<InitListExpr>(Inits[0]) |
10020 | : nullptr; |
10021 | |
10022 | |
10023 | |
10024 | |
10025 | |
10026 | |
10027 | |
10028 | |
10029 | |
10030 | |
10031 | OverloadCandidateSet Candidates(Kind.getLocation(), |
10032 | OverloadCandidateSet::CSK_Normal); |
10033 | OverloadCandidateSet::iterator Best; |
10034 | |
10035 | bool HasAnyDeductionGuide = false; |
10036 | bool AllowExplicit = !Kind.isCopyInit() || ListInit; |
10037 | |
10038 | auto tryToResolveOverload = |
10039 | [&](bool OnlyListConstructors) -> OverloadingResult { |
10040 | Candidates.clear(OverloadCandidateSet::CSK_Normal); |
10041 | HasAnyDeductionGuide = false; |
10042 | |
10043 | for (auto I = Guides.begin(), E = Guides.end(); I != E; ++I) { |
10044 | NamedDecl *D = (*I)->getUnderlyingDecl(); |
10045 | if (D->isInvalidDecl()) |
10046 | continue; |
10047 | |
10048 | auto *TD = dyn_cast<FunctionTemplateDecl>(D); |
10049 | auto *GD = dyn_cast_or_null<CXXDeductionGuideDecl>( |
10050 | TD ? TD->getTemplatedDecl() : dyn_cast<FunctionDecl>(D)); |
10051 | if (!GD) |
10052 | continue; |
10053 | |
10054 | if (!GD->isImplicit()) |
10055 | HasAnyDeductionGuide = true; |
10056 | |
10057 | |
10058 | |
10059 | |
10060 | |
10061 | |
10062 | if (!AllowExplicit) { |
10063 | |
10064 | |
10065 | |
10066 | |
10067 | |
10068 | |
10069 | if (GD->getMinRequiredArguments() > 1 || |
10070 | (GD->getNumParams() == 0 && !GD->isVariadic())) |
10071 | continue; |
10072 | } |
10073 | |
10074 | |
10075 | |
10076 | |
10077 | if (OnlyListConstructors && !isInitListConstructor(GD)) |
10078 | continue; |
10079 | |
10080 | |
10081 | |
10082 | |
10083 | |
10084 | |
10085 | |
10086 | |
10087 | |
10088 | |
10089 | |
10090 | |
10091 | |
10092 | bool SuppressUserConversions = Kind.isCopyInit(); |
10093 | |
10094 | if (TD) |
10095 | AddTemplateOverloadCandidate(TD, I.getPair(), nullptr, |
10096 | Inits, Candidates, SuppressUserConversions, |
10097 | false, |
10098 | AllowExplicit); |
10099 | else |
10100 | AddOverloadCandidate(GD, I.getPair(), Inits, Candidates, |
10101 | SuppressUserConversions, |
10102 | false, AllowExplicit); |
10103 | } |
10104 | return Candidates.BestViableFunction(*this, Kind.getLocation(), Best); |
10105 | }; |
10106 | |
10107 | OverloadingResult Result = OR_No_Viable_Function; |
10108 | |
10109 | |
10110 | |
10111 | if (ListInit) { |
10112 | bool TryListConstructors = true; |
10113 | |
10114 | |
10115 | |
10116 | if (!ListInit->getNumInits()) { |
10117 | for (NamedDecl *D : Guides) { |
10118 | auto *FD = dyn_cast<FunctionDecl>(D->getUnderlyingDecl()); |
10119 | if (FD && FD->getMinRequiredArguments() == 0) { |
10120 | TryListConstructors = false; |
10121 | break; |
10122 | } |
10123 | } |
10124 | } else if (ListInit->getNumInits() == 1) { |
10125 | |
10126 | |
10127 | |
10128 | |
10129 | |
10130 | Expr *E = ListInit->getInit(0); |
10131 | auto *RD = E->getType()->getAsCXXRecordDecl(); |
10132 | if (!isa<InitListExpr>(E) && RD && |
10133 | isCompleteType(Kind.getLocation(), E->getType()) && |
10134 | isOrIsDerivedFromSpecializationOf(RD, Template)) |
10135 | TryListConstructors = false; |
10136 | } |
10137 | |
10138 | if (TryListConstructors) |
10139 | Result = tryToResolveOverload(true); |
10140 | |
10141 | |
10142 | Inits = MultiExprArg(ListInit->getInits(), ListInit->getNumInits()); |
10143 | } |
10144 | |
10145 | |
10146 | |
10147 | if (Result == OR_No_Viable_Function) |
10148 | Result = tryToResolveOverload(false); |
10149 | |
10150 | switch (Result) { |
10151 | case OR_Ambiguous: |
10152 | |
10153 | |
10154 | |
10155 | Candidates.NoteCandidates( |
10156 | PartialDiagnosticAt( |
10157 | Kind.getLocation(), |
10158 | PDiag(diag::err_deduced_class_template_ctor_ambiguous) |
10159 | << TemplateName), |
10160 | *this, OCD_AmbiguousCandidates, Inits); |
10161 | return QualType(); |
10162 | |
10163 | case OR_No_Viable_Function: { |
10164 | CXXRecordDecl *Primary = |
10165 | cast<ClassTemplateDecl>(Template)->getTemplatedDecl(); |
10166 | bool Complete = |
10167 | isCompleteType(Kind.getLocation(), Context.getTypeDeclType(Primary)); |
10168 | Candidates.NoteCandidates( |
10169 | PartialDiagnosticAt( |
10170 | Kind.getLocation(), |
10171 | PDiag(Complete ? diag::err_deduced_class_template_ctor_no_viable |
10172 | : diag::err_deduced_class_template_incomplete) |
10173 | << TemplateName << !Guides.empty()), |
10174 | *this, OCD_AllCandidates, Inits); |
10175 | return QualType(); |
10176 | } |
10177 | |
10178 | case OR_Deleted: { |
10179 | Diag(Kind.getLocation(), diag::err_deduced_class_template_deleted) |
10180 | << TemplateName; |
10181 | NoteDeletedFunction(Best->Function); |
10182 | return QualType(); |
10183 | } |
10184 | |
10185 | case OR_Success: |
10186 | |
10187 | |
10188 | |
10189 | if (Kind.isCopyInit() && ListInit && |
10190 | cast<CXXDeductionGuideDecl>(Best->Function)->isExplicit()) { |
10191 | bool IsDeductionGuide = !Best->Function->isImplicit(); |
10192 | Diag(Kind.getLocation(), diag::err_deduced_class_template_explicit) |
10193 | << TemplateName << IsDeductionGuide; |
10194 | Diag(Best->Function->getLocation(), |
10195 | diag::note_explicit_ctor_deduction_guide_here) |
10196 | << IsDeductionGuide; |
10197 | return QualType(); |
10198 | } |
10199 | |
10200 | |
10201 | |
10202 | DiagnoseUseOfDecl(Best->Function, Kind.getLocation()); |
10203 | MarkFunctionReferenced(Kind.getLocation(), Best->Function); |
10204 | break; |
10205 | } |
10206 | |
10207 | |
10208 | |
10209 | |
10210 | QualType DeducedType = |
10211 | SubstAutoType(TSInfo->getType(), Best->Function->getReturnType()); |
10212 | Diag(TSInfo->getTypeLoc().getBeginLoc(), |
10213 | diag::warn_cxx14_compat_class_template_argument_deduction) |
10214 | << TSInfo->getTypeLoc().getSourceRange() << 1 << DeducedType; |
10215 | |
10216 | |
10217 | |
10218 | if (!HasAnyDeductionGuide) { |
10219 | Diag(TSInfo->getTypeLoc().getBeginLoc(), |
10220 | diag::warn_ctad_maybe_unsupported) |
10221 | << TemplateName; |
10222 | Diag(Template->getLocation(), diag::note_suppress_ctad_maybe_unsupported); |
10223 | } |
10224 | |
10225 | return DeducedType; |
10226 | } |