Bug Summary

File:src/usr.sbin/mrouted/obj/cfparse.c
Warning:line 1018, column 14
Null pointer passed as 2nd argument to string comparison function

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd7.4 -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name cfparse.c -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -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 pic -pic-level 1 -pic-is-pie -mframe-pointer=all -relaxed-aliasing -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/usr.sbin/mrouted/obj -resource-dir /usr/local/llvm16/lib/clang/16 -I /usr/src/usr.sbin/mrouted -internal-isystem /usr/local/llvm16/lib/clang/16/include -internal-externc-isystem /usr/include -O2 -fdebug-compilation-dir=/usr/src/usr.sbin/mrouted/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fcf-protection=branch -fno-jump-tables -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/scan/2024-01-11-140451-98009-1 -x c cfparse.c
1#include <stdlib.h>
2#include <string.h>
3#define YYBYACC1 1
4#define YYMAJOR1 1
5#define YYMINOR9 9
6#define YYLEXyylex() yylex()
7#define YYEMPTY-1 -1
8#define yyclearin(yychar=(-1)) (yychar=(YYEMPTY-1))
9#define yyerrok(yyerrflag=0) (yyerrflag=0)
10#define YYRECOVERING()(yyerrflag!=0) (yyerrflag!=0)
11#define YYPREFIX"yy" "yy"
12#line 2 "/usr/src/usr.sbin/mrouted/cfparse.y"
13/* $NetBSD: cfparse.y,v 1.4 1995/12/10 10:06:57 mycroft Exp $ */
14
15/*
16 * Configuration file parser for mrouted.
17 *
18 * Written by Bill Fenner, NRL, 1994
19 * Copyright (c) 1994
20 * Naval Research Laboratory (NRL/CCS)
21 * and the
22 * Defense Advanced Research Projects Agency (DARPA)
23 *
24 * All Rights Reserved.
25 *
26 * Permission to use, copy, modify and distribute this software and its
27 * documentation is hereby granted, provided that both the copyright notice and
28 * this permission notice appear in all copies of the software, derivative
29 * works or modified versions, and any portions thereof, and that both notices
30 * appear in supporting documentation.
31 *
32 * NRL AND DARPA ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION AND
33 * DISCLAIM ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM
34 * THE USE OF THIS SOFTWARE.
35 */
36#include <stdio.h>
37#include <string.h>
38#include <stdarg.h>
39#include "defs.h"
40#include <netdb.h>
41#include <ifaddrs.h>
42
43/*
44 * Local function declarations
45 */
46static void fatal(const char *fmt, ...)
47 __attribute__((__format__ (printf, 1, 2)))
48 __attribute__((__nonnull__ (1)));
49static void warn(const char *fmt, ...)
50 __attribute__((__format__ (printf, 1, 2)))
51 __attribute__((__nonnull__ (1)));
52static void yyerror(char *s);
53static char * next_word(void);
54static int yylex(void);
55static u_int32_t valid_if(char *s);
56static const char * ifconfaddr(u_int32_t a);
57int yyparse(void);
58
59static FILE *f;
60
61extern int udp_socket;
62char *configfilename = _PATH_MROUTED_CONF"/etc/mrouted.conf";
63
64extern int cache_lifetime;
65extern int max_prune_lifetime;
66
67static int lineno;
68
69static struct uvif *v;
70
71static int order;
72
73struct addrmask {
74 u_int32_t addr;
75 int mask;
76};
77
78struct boundnam {
79 char *name;
80 struct addrmask bound;
81};
82
83#define MAXBOUNDS20 20
84
85struct boundnam boundlist[MAXBOUNDS20]; /* Max. of 20 named boundaries */
86int numbounds = 0; /* Number of named boundaries */
87
88#line 79 "/usr/src/usr.sbin/mrouted/cfparse.y"
89#ifndef YYSTYPE_DEFINED
90#define YYSTYPE_DEFINED
91typedef union
92{
93 int num;
94 char *ptr;
95 struct addrmask addrmask;
96 u_int32_t addr;
97} YYSTYPE;
98#endif /* YYSTYPE_DEFINED */
99#line 100 "cfparse.c"
100#define CACHE_LIFETIME257 257
101#define PRUNING258 258
102#define PHYINT259 259
103#define TUNNEL260 260
104#define NAME261 261
105#define DISABLE262 262
106#define IGMPV1263 263
107#define SRCRT264 264
108#define METRIC265 265
109#define THRESHOLD266 266
110#define RATE_LIMIT267 267
111#define BOUNDARY268 268
112#define NETMASK269 269
113#define ALTNET270 270
114#define BOOLEAN271 271
115#define NUMBER272 272
116#define STRING273 273
117#define ADDRMASK274 274
118#define ADDR275 275
119#define YYERRCODE256 256
120const short yylhs[] =
121 { -1,
122 0, 6, 6, 7, 9, 7, 11, 7, 7, 7,
123 7, 10, 10, 12, 12, 8, 8, 14, 14, 14,
124 14, 14, 14, 14, 13, 13, 13, 13, 13, 13,
125 13, 13, 1, 1, 2, 2, 3, 3, 4, 5,
126 5,
127};
128const short yylen[] =
129 { 2,
130 1, 0, 2, 1, 0, 4, 0, 5, 2, 2,
131 3, 0, 2, 1, 1, 0, 2, 1, 1, 1,
132 2, 1, 2, 1, 2, 1, 2, 1, 2, 1,
133 2, 1, 1, 1, 1, 1, 1, 1, 1, 1,
134 1,
135};
136const short yydefred[] =
137 { 2,
138 0, 0, 4, 0, 0, 0, 0, 0, 3, 10,
139 9, 34, 33, 5, 0, 0, 16, 36, 35, 7,
140 39, 11, 0, 12, 19, 20, 0, 0, 0, 0,
141 0, 0, 18, 17, 0, 27, 25, 29, 38, 31,
142 37, 21, 40, 41, 23, 15, 13, 14,
143};
144const short yydgoto[] =
145 { 1,
146 14, 20, 40, 22, 45, 2, 9, 23, 17, 35,
147 24, 47, 33, 34,
148};
149const short yysindex[] =
150 { 0,
151 0, -239, 0, -272, -267, -250, -250, -241, 0, 0,
152 0, 0, 0, 0, -249, -240, 0, 0, 0, 0,
153 0, 0, -260, 0, 0, 0, -237, -236, -235, -246,
154 -249, -245, 0, 0, -253, 0, 0, 0, 0, 0,
155 0, 0, 0, 0, 0, 0, 0, 0,};
156const short yyrindex[] =
157 { 0,
158 0, 33, 0, 0, 0, 0, 0, 0, 0, 0,
159 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
160 0, 0, 91, 0, 0, 0, 1, 16, 31, 46,
161 61, 76, 0, 0, 97, 0, 0, 0, 0, 0,
162 0, 0, 0, 0, 0, 0, 0, 0,};
163const short yygindex[] =
164 { 0,
165 32, 7, 0, 10, 0, 0, 0, 0, 0, 0,
166 0, 0, 6, 0,
167};
168#define YYTABLESIZE358 358
169const short yytable[] =
170 { 10,
171 28, 25, 26, 11, 27, 28, 29, 30, 31, 32,
172 46, 27, 28, 29, 30, 26, 3, 4, 5, 6,
173 7, 8, 12, 18, 13, 19, 39, 21, 43, 44,
174 30, 16, 1, 21, 36, 37, 38, 42, 15, 41,
175 48, 0, 0, 0, 0, 32, 0, 0, 0, 0,
176 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
177 22, 0, 0, 0, 0, 0, 0, 0, 0, 0,
178 0, 0, 0, 0, 0, 24, 0, 0, 0, 0,
179 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
180 6, 0, 0, 0, 0, 0, 8, 0, 0, 0,
181 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
182 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
183 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
184 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
185 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
186 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
187 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
188 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
189 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
190 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
191 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
192 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
193 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
194 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
195 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
196 0, 0, 0, 0, 0, 0, 28, 28, 28, 28,
197 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
198 28, 26, 26, 26, 26, 26, 26, 26, 26, 26,
199 26, 26, 26, 26, 26, 26, 30, 30, 30, 30,
200 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,
201 30, 32, 32, 32, 32, 32, 32, 32, 32, 32,
202 32, 32, 32, 32, 32, 32, 22, 22, 22, 22,
203 22, 22, 22, 22, 0, 22, 22, 22, 22, 22,
204 22, 24, 24, 24, 24, 24, 24, 24, 24, 0,
205 24, 24, 24, 24, 24, 24, 6, 6, 6, 6,
206 6, 6, 8, 8, 8, 8, 8, 8,
207};
208const short yycheck[] =
209 { 272,
210 0, 262, 263, 271, 265, 266, 267, 268, 269, 270,
211 264, 265, 266, 267, 268, 0, 256, 257, 258, 259,
212 260, 261, 273, 273, 275, 275, 273, 274, 274, 275,
213 0, 273, 0, 274, 272, 272, 272, 31, 7, 30,
214 35, -1, -1, -1, -1, 0, -1, -1, -1, -1,
215 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
216 0, -1, -1, -1, -1, -1, -1, -1, -1, -1,
217 -1, -1, -1, -1, -1, 0, -1, -1, -1, -1,
218 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
219 0, -1, -1, -1, -1, -1, 0, -1, -1, -1,
220 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
221 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
222 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
223 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
224 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
225 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
226 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
227 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
228 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
229 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
230 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
231 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
232 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
233 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
234 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
235 -1, -1, -1, -1, -1, -1, 256, 257, 258, 259,
236 260, 261, 262, 263, 264, 265, 266, 267, 268, 269,
237 270, 256, 257, 258, 259, 260, 261, 262, 263, 264,
238 265, 266, 267, 268, 269, 270, 256, 257, 258, 259,
239 260, 261, 262, 263, 264, 265, 266, 267, 268, 269,
240 270, 256, 257, 258, 259, 260, 261, 262, 263, 264,
241 265, 266, 267, 268, 269, 270, 256, 257, 258, 259,
242 260, 261, 262, 263, -1, 265, 266, 267, 268, 269,
243 270, 256, 257, 258, 259, 260, 261, 262, 263, -1,
244 265, 266, 267, 268, 269, 270, 256, 257, 258, 259,
245 260, 261, 256, 257, 258, 259, 260, 261,
246};
247#define YYFINAL1 1
248#ifndef YYDEBUG0
249#define YYDEBUG0 0
250#endif
251#define YYMAXTOKEN275 275
252#if YYDEBUG0
253const char * const yyname[] =
254 {
255"end-of-file",0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
2560,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
2570,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
2580,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
2590,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
2600,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
2610,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,"CACHE_LIFETIME","PRUNING",
262"PHYINT","TUNNEL","NAME","DISABLE","IGMPV1","SRCRT","METRIC","THRESHOLD",
263"RATE_LIMIT","BOUNDARY","NETMASK","ALTNET","BOOLEAN","NUMBER","STRING",
264"ADDRMASK","ADDR",
265};
266const char * const yyrule[] =
267 {"$accept : conf",
268"conf : stmts",
269"stmts :",
270"stmts : stmts stmt",
271"stmt : error",
272"$$1 :",
273"stmt : PHYINT interface $$1 ifmods",
274"$$2 :",
275"stmt : TUNNEL interface addrname $$2 tunnelmods",
276"stmt : PRUNING BOOLEAN",
277"stmt : CACHE_LIFETIME NUMBER",
278"stmt : NAME STRING boundary",
279"tunnelmods :",
280"tunnelmods : tunnelmods tunnelmod",
281"tunnelmod : mod",
282"tunnelmod : SRCRT",
283"ifmods :",
284"ifmods : ifmods ifmod",
285"ifmod : mod",
286"ifmod : DISABLE",
287"ifmod : IGMPV1",
288"ifmod : NETMASK addrname",
289"ifmod : NETMASK",
290"ifmod : ALTNET addrmask",
291"ifmod : ALTNET",
292"mod : THRESHOLD NUMBER",
293"mod : THRESHOLD",
294"mod : METRIC NUMBER",
295"mod : METRIC",
296"mod : RATE_LIMIT NUMBER",
297"mod : RATE_LIMIT",
298"mod : BOUNDARY bound",
299"mod : BOUNDARY",
300"interface : ADDR",
301"interface : STRING",
302"addrname : ADDR",
303"addrname : STRING",
304"bound : boundary",
305"bound : STRING",
306"boundary : ADDRMASK",
307"addrmask : ADDRMASK",
308"addrmask : ADDR",
309};
310#endif
311#ifdef YYSTACKSIZE10000
312#undef YYMAXDEPTH10000
313#define YYMAXDEPTH10000 YYSTACKSIZE10000
314#else
315#ifdef YYMAXDEPTH10000
316#define YYSTACKSIZE10000 YYMAXDEPTH10000
317#else
318#define YYSTACKSIZE10000 10000
319#define YYMAXDEPTH10000 10000
320#endif
321#endif
322#define YYINITSTACKSIZE200 200
323/* LINTUSED */
324int yydebug;
325int yynerrs;
326int yyerrflag;
327int yychar;
328short *yyssp;
329YYSTYPE *yyvsp;
330YYSTYPE yyval;
331YYSTYPE yylval;
332short *yyss;
333short *yysslim;
334YYSTYPE *yyvs;
335unsigned int yystacksize;
336int yyparse(void);
337#line 374 "/usr/src/usr.sbin/mrouted/cfparse.y"
338static void
339fatal(const char *fmt, ...)
340{
341 va_list ap;
342 char buf[200];
343
344 va_start(ap, fmt)__builtin_va_start((ap), fmt);
345 vsnprintf(buf, sizeof buf, fmt, ap);
346 va_end(ap)__builtin_va_end((ap));
347
348 logit(LOG_ERR3,0,"%s: %s near line %d", configfilename, buf, lineno);
349}
350
351static void
352warn(const char *fmt, ...)
353{
354 va_list ap;
355 char buf[200];
356
357 va_start(ap, fmt)__builtin_va_start((ap), fmt);
358 vsnprintf(buf, sizeof buf, fmt, ap);
359 va_end(ap)__builtin_va_end((ap));
360
361 logit(LOG_WARNING4,0,"%s: %s near line %d", configfilename, buf, lineno);
362}
363
364static void
365yyerror(char *s)
366{
367 logit(LOG_ERR3, 0, "%s: %s near line %d", configfilename, s, lineno);
368}
369
370static char *
371next_word(void)
372{
373 static char buf[1024];
374 static char *p=NULL((void *)0);
375 extern FILE *f;
376 char *q;
377
378 while (1) {
379 if (!p || !*p) {
380 lineno++;
381 if (fgets(buf, sizeof(buf), f) == NULL((void *)0))
382 return NULL((void *)0);
383 p = buf;
384 }
385 while (*p && (*p == ' ' || *p == '\t')) /* skip whitespace */
386 p++;
387 if (*p == '#') {
388 p = NULL((void *)0); /* skip comments */
389 continue;
390 }
391 q = p;
392 while (*p && *p != ' ' && *p != '\t' && *p != '\n')
393 p++; /* find next whitespace */
394 *p++ = '\0'; /* null-terminate string */
395
396 if (!*q) {
397 p = NULL((void *)0);
398 continue; /* if 0-length string, read another line */
399 }
400
401 return q;
402 }
403}
404
405static int
406yylex(void)
407{
408 int n;
409 u_int32_t addr;
410 char *q;
411
412 if ((q = next_word()) == NULL((void *)0)) {
413 return 0;
414 }
415
416 if (!strcmp(q,"cache_lifetime"))
417 return CACHE_LIFETIME257;
418 if (!strcmp(q,"pruning"))
419 return PRUNING258;
420 if (!strcmp(q,"phyint"))
421 return PHYINT259;
422 if (!strcmp(q,"tunnel"))
423 return TUNNEL260;
424 if (!strcmp(q,"disable"))
425 return DISABLE262;
426 if (!strcmp(q,"metric"))
427 return METRIC265;
428 if (!strcmp(q,"threshold"))
429 return THRESHOLD266;
430 if (!strcmp(q,"rate_limit"))
431 return RATE_LIMIT267;
432 if (!strcmp(q,"srcrt") || !strcmp(q,"sourceroute"))
433 return SRCRT264;
434 if (!strcmp(q,"boundary"))
435 return BOUNDARY268;
436 if (!strcmp(q,"netmask"))
437 return NETMASK269;
438 if (!strcmp(q,"igmpv1"))
439 return IGMPV1263;
440 if (!strcmp(q,"altnet"))
441 return ALTNET270;
442 if (!strcmp(q,"name"))
443 return NAME261;
444 if (!strcmp(q,"on") || !strcmp(q,"yes")) {
445 yylval.num = 1;
446 return BOOLEAN271;
447 }
448 if (!strcmp(q,"off") || !strcmp(q,"no")) {
449 yylval.num = 0;
450 return BOOLEAN271;
451 }
452 if (sscanf(q,"%[.0-9]/%d%c",s1,&n,s2) == 2) {
453 if ((addr = inet_parse(s1)) != 0xffffffff) {
454 yylval.addrmask.mask = n;
455 yylval.addrmask.addr = addr;
456 return ADDRMASK274;
457 }
458 /* fall through to returning STRING */
459 }
460 if (sscanf(q,"%[.0-9]%c",s1,s2) == 1) {
461 if ((addr = inet_parse(s1)) != 0xffffffff &&
462 inet_valid_host(addr)) {
463 yylval.addr = addr;
464 return ADDR275;
465 }
466 }
467 if (sscanf(q,"0x%8x%c",&n,s1) == 1) {
468 yylval.addr = n;
469 return ADDR275;
470 }
471 if (sscanf(q,"%d%c",&n,s1) == 1) {
472 yylval.num = n;
473 return NUMBER272;
474 }
475 yylval.ptr = q;
476 return STRING273;
477}
478
479void
480config_vifs_from_file(void)
481{
482 extern FILE *f;
483
484 order = 0;
485 numbounds = 0;
486 lineno = 0;
487
488 if ((f = fopen(configfilename, "r")) == NULL((void *)0)) {
489 if (errno(*__errno()) != ENOENT2)
490 logit(LOG_ERR3, errno(*__errno()), "can't open %s", configfilename);
491 return;
492 }
493
494 yyparse();
495
496 fclose(f);
497}
498
499static u_int32_t
500valid_if(char *s)
501{
502 register vifi_t vifi;
503 register struct uvif *v;
504
505 for (vifi=0, v=uvifs; vifi<numvifs; vifi++, v++)
506 if (!strcmp(v->uv_name, s))
507 return v->uv_lcl_addr;
508
509 return 0;
510}
511
512static const char *
513ifconfaddr(u_int32_t a)
514{
515 static char ifname[IFNAMSIZ16];
516 struct ifaddrs *ifap, *ifa;
517
518 if (getifaddrs(&ifap) != 0)
519 return (NULL((void *)0));
520
521 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
522 if (ifa->ifa_addr != NULL((void *)0) &&
523 ifa->ifa_addr->sa_family == AF_INET2 &&
524 ((struct sockaddr_in *)ifa->ifa_addr)->sin_addr.s_addr == a) {
525 strlcpy(ifname, ifa->ifa_name, sizeof(ifname));
526 freeifaddrs(ifap);
527 return (ifname);
528 }
529 }
530 freeifaddrs(ifap);
531 return (0);
532}
533#line 526 "cfparse.c"
534/* allocate initial stack or double stack size, up to YYMAXDEPTH */
535static int yygrowstack(void)
536{
537 unsigned int newsize;
538 long sslen;
539 short *newss;
540 YYSTYPE *newvs;
541
542 if ((newsize = yystacksize) == 0)
543 newsize = YYINITSTACKSIZE200;
544 else if (newsize >= YYMAXDEPTH10000)
545 return -1;
546 else if ((newsize *= 2) > YYMAXDEPTH10000)
547 newsize = YYMAXDEPTH10000;
548 sslen = yyssp - yyss;
549#ifdef SIZE_MAX
550#define YY_SIZE_MAX0xffffffffU SIZE_MAX
551#else
552#define YY_SIZE_MAX0xffffffffU 0xffffffffU
553#endif
554 if (newsize && YY_SIZE_MAX0xffffffffU / newsize < sizeof *newss)
555 goto bail;
556 newss = (short *)realloc(yyss, newsize * sizeof *newss);
557 if (newss == NULL((void *)0))
558 goto bail;
559 yyss = newss;
560 yyssp = newss + sslen;
561 if (newsize && YY_SIZE_MAX0xffffffffU / newsize < sizeof *newvs)
562 goto bail;
563 newvs = (YYSTYPE *)realloc(yyvs, newsize * sizeof *newvs);
564 if (newvs == NULL((void *)0))
565 goto bail;
566 yyvs = newvs;
567 yyvsp = newvs + sslen;
568 yystacksize = newsize;
569 yysslim = yyss + newsize - 1;
570 return 0;
571bail:
572 if (yyss)
573 free(yyss);
574 if (yyvs)
575 free(yyvs);
576 yyss = yyssp = NULL((void *)0);
577 yyvs = yyvsp = NULL((void *)0);
578 yystacksize = 0;
579 return -1;
580}
581
582#define YYABORTgoto yyabort goto yyabort
583#define YYREJECTgoto yyabort goto yyabort
584#define YYACCEPTgoto yyaccept goto yyaccept
585#define YYERRORgoto yyerrlab goto yyerrlab
586int
587yyparse(void)
588{
589 int yym, yyn, yystate;
590#if YYDEBUG0
591 const char *yys;
592
593 if ((yys = getenv("YYDEBUG")))
594 {
595 yyn = *yys;
596 if (yyn >= '0' && yyn <= '9')
597 yydebug = yyn - '0';
598 }
599#endif /* YYDEBUG */
600
601 yynerrs = 0;
602 yyerrflag = 0;
603 yychar = (-1);
604
605 if (yyss == NULL((void *)0) && yygrowstack()) goto yyoverflow;
1
Assuming 'yyss' is not equal to NULL
→
606 yyssp = yyss;
607 yyvsp = yyvs;
608 *yyssp = yystate = 0;
609
610yyloop:
611 if ((yyn = yydefred[yystate]) != 0) goto yyreduce;
2
←
Taking true branch
→
3
←
Control jumps to line 718
→
9
←
Taking false branch
→
25
←
Assuming the condition is true
→
26
←
Taking true branch
→
27
←
Control jumps to line 718
→
36
←
Assuming the condition is true
→
37
←
Taking true branch
→
38
←
Control jumps to line 718
→
612 if (yychar
9.1
'yychar' is < 0
 < 0)
10
←
Taking true branch
→
613 {
614 if ((yychar = yylex()) < 0) yychar = 0;
615#if YYDEBUG0
616 if (yydebug)
617 {
618 yys = 0;
619 if (yychar <= YYMAXTOKEN275) yys = yyname[yychar];
620 if (!yys) yys = "illegal-symbol";
621 printf("%sdebug: state %d, reading %d (%s)\n",
622 YYPREFIX"yy", yystate, yychar, yys);
623 }
624#endif
625 }
626 if ((yyn = yysindex[yystate]) && (yyn += yychar) >= 0 &&
11
←
Assuming 'yyn' is not equal to 0
→
627 yyn
11.1
'yyn' is <= YYTABLESIZE
 <= YYTABLESIZE358 && yycheck[yyn] == yychar)
628 {
629#if YYDEBUG0
630 if (yydebug)
631 printf("%sdebug: state %d, shifting to state %d\n",
632 YYPREFIX"yy", yystate, yytable[yyn]);
633#endif
634 if (yyssp >= yysslim && yygrowstack())
635 {
636 goto yyoverflow;
637 }
638 *++yyssp = yystate = yytable[yyn];
639 *++yyvsp = yylval;
640 yychar = (-1);
641 if (yyerrflag > 0) --yyerrflag;
642 goto yyloop;
643 }
644 if ((yyn = yyrindex[yystate]) && (yyn += yychar) >= 0 &&
12
←
Assuming 'yyn' is not equal to 0
→
13
←
Taking false branch
→
645 yyn
12.1
'yyn' is <= YYTABLESIZE
 <= YYTABLESIZE358 && yycheck[yyn] == yychar)
646 {
647 yyn = yytable[yyn];
648 goto yyreduce;
649 }
650 if (yyerrflag
13.1
'yyerrflag' is 0
) goto yyinrecovery;
14
←
Taking false branch
→
651#if defined(__GNUC__4)
652 goto yynewerror;
15
←
Control jumps to line 655
→
653#endif
654yynewerror:
655 yyerror("syntax error");
656#if defined(__GNUC__4)
657 goto yyerrlab;
16
←
Control jumps to line 660
→
658#endif
659yyerrlab:
660 ++yynerrs;
661yyinrecovery:
662 if (yyerrflag < 3)
17
←
Assuming 'yyerrflag' is < 3
→
18
←
Taking true branch
→
663 {
664 yyerrflag = 3;
665 for (;;)
666 {
667 if ((yyn = yysindex[*yyssp]) && (yyn += YYERRCODE256) >= 0 &&
19
←
Assuming 'yyn' is not equal to 0
→
20
←
Assuming the condition is true
→
668 yyn <= YYTABLESIZE358 && yycheck[yyn] == YYERRCODE256)
21
←
Assuming 'yyn' is <= YYTABLESIZE
→
22
←
Assuming the condition is true
→
669 {
670#if YYDEBUG0
671 if (yydebug)
672 printf("%sdebug: state %d, error recovery shifting\
673 to state %d\n", YYPREFIX"yy", *yyssp, yytable[yyn]);
674#endif
675 if (yyssp >= yysslim && yygrowstack())
23
←
Assuming 'yyssp' is < 'yysslim'
→
676 {
677 goto yyoverflow;
678 }
679 *++yyssp = yystate = yytable[yyn];
680 *++yyvsp = yylval;
681 goto yyloop;
24
←
Control jumps to line 611
→
682 }
683 else
684 {
685#if YYDEBUG0
686 if (yydebug)
687 printf("%sdebug: error recovery discarding state %d\n",
688 YYPREFIX"yy", *yyssp);
689#endif
690 if (yyssp <= yyss) goto yyabort;
691 --yyssp;
692 --yyvsp;
693 }
694 }
695 }
696 else
697 {
698 if (yychar == 0) goto yyabort;
699#if YYDEBUG0
700 if (yydebug)
701 {
702 yys = 0;
703 if (yychar <= YYMAXTOKEN275) yys = yyname[yychar];
704 if (!yys) yys = "illegal-symbol";
705 printf("%sdebug: state %d, error recovery discards token %d (%s)\n",
706 YYPREFIX"yy", yystate, yychar, yys);
707 }
708#endif
709 yychar = (-1);
710 goto yyloop;
711 }
712yyreduce:
713#if YYDEBUG0
714 if (yydebug)
715 printf("%sdebug: state %d, reducing by rule %d (%s)\n",
716 YYPREFIX"yy", yystate, yyn, yyrule[yyn]);
717#endif
718 yym = yylen[yyn];
719 if (yym
3.1
'yym' is 0
)
4
←
Taking false branch
→
28
←
Assuming 'yym' is 0
→
29
←
Taking false branch
→
39
←
Assuming 'yym' is 0
→
40
←
Taking false branch
→
720 yyval = yyvsp[1-yym];
721 else
722 memset(&yyval, 0, sizeof yyval);
723 switch (yyn)
5
←
'Default' branch taken. Execution continues on line 1050
→
30
←
'Default' branch taken. Execution continues on line 1050
→
41
←
Control jumps to 'case 38:' at line 1013
→
724 {
725case 5:
726#line 112 "/usr/src/usr.sbin/mrouted/cfparse.y"
727{
728
729 vifi_t vifi;
730
731 if (order)
732 fatal("phyints must appear before tunnels");
733
734 for (vifi = 0, v = uvifs;
735 vifi < numvifs;
736 ++vifi, ++v)
737 if (!(v->uv_flags & VIFF_TUNNEL0x1) &&
738 yyvsp[0].addr == v->uv_lcl_addr)
739 break;
740
741 if (vifi == numvifs)
742 fatal("%s is not a configured interface",
743 inet_fmt(yyvsp[0].addr,s1));
744
745 }
746break;
747case 7:
748#line 132 "/usr/src/usr.sbin/mrouted/cfparse.y"
749{
750 const char *ifname;
751 struct ifreq ffr;
752 vifi_t vifi;
753
754 order++;
755
756 ifname = ifconfaddr(yyvsp[-1].addr);
757 if (ifname == 0)
758 fatal("Tunnel local address %s is not mine",
759 inet_fmt(yyvsp[-1].addr, s1));
760
761 strlcpy(ffr.ifr_name, ifname, sizeof(ffr.ifr_name));
762 if (ioctl(udp_socket, SIOCGIFFLAGS(((unsigned long)0x80000000|(unsigned long)0x40000000) | ((sizeof
(struct ifreq) & 0x1fff) << 16) | ((('i')) <<
8) | ((17))), (char *)&ffr) == -1)
763 fatal("ioctl SIOCGIFFLAGS on %s",ffr.ifr_name);
764 if (ffr.ifr_flagsifr_ifru.ifru_flags & IFF_LOOPBACK0x8)
765 fatal("Tunnel local address %s is a loopback interface",
766 inet_fmt(yyvsp[-1].addr, s1));
767
768 if (ifconfaddr(yyvsp[0].addr) != 0)
769 fatal("Tunnel remote address %s is one of mine",
770 inet_fmt(yyvsp[0].addr, s1));
771
772 for (vifi = 0, v = uvifs;
773 vifi < numvifs;
774 ++vifi, ++v)
775 if (v->uv_flags & VIFF_TUNNEL0x1) {
776 if (yyvsp[0].addr == v->uv_rmt_addr)
777 fatal("Duplicate tunnel to %s",
778 inet_fmt(yyvsp[0].addr, s1));
779 } else if (!(v->uv_flags & VIFF_DISABLED0x0200)) {
780 if ((yyvsp[0].addr & v->uv_subnetmask) == v->uv_subnet)
781 fatal("Unnecessary tunnel to %s",
782 inet_fmt(yyvsp[0].addr,s1));
783 }
784
785 if (numvifs == MAXVIFS32)
786 fatal("too many vifs");
787
788 v = &uvifs[numvifs];
789 v->uv_flags = VIFF_TUNNEL0x1;
790 v->uv_metric = DEFAULT_METRIC1;
791 v->uv_rate_limit= DEFAULT_TUN_RATE_LIMIT500;
792 v->uv_threshold = DEFAULT_THRESHOLD1;
793 v->uv_lcl_addr = yyvsp[-1].addr;
794 v->uv_rmt_addr = yyvsp[0].addr;
795 v->uv_subnet = 0;
796 v->uv_subnetmask= 0;
797 v->uv_subnetbcast= 0;
798 strncpy(v->uv_name, ffr.ifr_name, IFNAMSIZ16);
799 v->uv_groups = NULL((void *)0);
800 v->uv_neighbors = NULL((void *)0);
801 v->uv_acl = NULL((void *)0);
802 v->uv_addrs = NULL((void *)0);
803
804 if (!(ffr.ifr_flagsifr_ifru.ifru_flags & IFF_UP0x1)) {
805 v->uv_flags |= VIFF_DOWN0x0100;
806 vifs_down = TRUE1;
807 }
808 }
809break;
810case 8:
811#line 193 "/usr/src/usr.sbin/mrouted/cfparse.y"
812{
813 logit(LOG_INFO6, 0,
814 "installing tunnel from %s to %s as vif #%u - rate=%d",
815 inet_fmt(yyvsp[-3].addr, s1), inet_fmt(yyvsp[-2].addr, s2),
816 numvifs, v->uv_rate_limit);
817
818 ++numvifs;
819 }
820break;
821case 9:
822#line 201 "/usr/src/usr.sbin/mrouted/cfparse.y"
823{ pruning = yyvsp[0].num; }
824break;
825case 10:
826#line 202 "/usr/src/usr.sbin/mrouted/cfparse.y"
827{ cache_lifetime = yyvsp[0].num;
828 max_prune_lifetime = cache_lifetime * 2;
829 }
830break;
831case 11:
832#line 205 "/usr/src/usr.sbin/mrouted/cfparse.y"
833{ if (numbounds >= MAXBOUNDS20) {
834 fatal("Too many named boundaries (max %d)", MAXBOUNDS20);
835 }
836
837 boundlist[numbounds].name = strdup(yyvsp[-1].ptr);
838 boundlist[numbounds++].bound = yyvsp[0].addrmask;
839 }
840break;
841case 15:
842#line 219 "/usr/src/usr.sbin/mrouted/cfparse.y"
843{ fatal("Source-route tunnels not supported"); }
844break;
845case 19:
846#line 227 "/usr/src/usr.sbin/mrouted/cfparse.y"
847{ v->uv_flags |= VIFF_DISABLED0x0200; }
848break;
849case 20:
850#line 228 "/usr/src/usr.sbin/mrouted/cfparse.y"
851{ v->uv_flags |= VIFF_IGMPV10x2000; }
852break;
853case 21:
854#line 229 "/usr/src/usr.sbin/mrouted/cfparse.y"
855{
856 u_int32_t subnet, mask;
857
858 mask = yyvsp[0].addr;
859 subnet = v->uv_lcl_addr & mask;
860 if (!inet_valid_subnet(subnet, mask))
861 fatal("Invalid netmask");
862 v->uv_subnet = subnet;
863 v->uv_subnetmask = mask;
864 v->uv_subnetbcast = subnet | ~mask;
865 }
866break;
867case 22:
868#line 240 "/usr/src/usr.sbin/mrouted/cfparse.y"
869{
870
871 warn("Expected address after netmask keyword, ignored");
872
873 }
874break;
875case 23:
876#line 245 "/usr/src/usr.sbin/mrouted/cfparse.y"
877{
878
879 struct phaddr *ph;
880
881 ph = malloc(sizeof(struct phaddr));
882 if (ph == NULL((void *)0))
883 fatal("out of memory");
884 if (yyvsp[0].addrmask.mask) {
885 VAL_TO_MASK(ph->pa_subnetmask, yyvsp[0].addrmask.mask){ ph->pa_subnetmask = (__uint32_t)(__builtin_constant_p(~(
(1 << (32 - (yyvsp[0].addrmask.mask))) - 1)) ? (__uint32_t
)(((__uint32_t)(~((1 << (32 - (yyvsp[0].addrmask.mask))
) - 1)) & 0xff) << 24 | ((__uint32_t)(~((1 <<
(32 - (yyvsp[0].addrmask.mask))) - 1)) & 0xff00) <<
8 | ((__uint32_t)(~((1 << (32 - (yyvsp[0].addrmask.mask
))) - 1)) & 0xff0000) >> 8 | ((__uint32_t)(~((1 <<
(32 - (yyvsp[0].addrmask.mask))) - 1)) & 0xff000000) >>
24) : __swap32md(~((1 << (32 - (yyvsp[0].addrmask.mask
))) - 1))); };;
886 } else
887 ph->pa_subnetmask = v->uv_subnetmask;
888 ph->pa_subnet = yyvsp[0].addrmask.addr & ph->pa_subnetmask;
889 ph->pa_subnetbcast = ph->pa_subnet | ~ph->pa_subnetmask;
890 if (yyvsp[0].addrmask.addr & ~ph->pa_subnetmask)
891 warn("Extra subnet %s/%d has host bits set",
892 inet_fmt(yyvsp[0].addrmask.addr,s1), yyvsp[0].addrmask.mask);
893 ph->pa_next = v->uv_addrs;
894 v->uv_addrs = ph;
895
896 }
897break;
898case 24:
899#line 265 "/usr/src/usr.sbin/mrouted/cfparse.y"
900{
901
902 warn("Expected address after altnet keyword, ignored");
903
904 }
905break;
906case 25:
907#line 272 "/usr/src/usr.sbin/mrouted/cfparse.y"
908{ if (yyvsp[0].num < 1 || yyvsp[0].num > 255)
909 fatal("Invalid threshold %d",yyvsp[0].num);
910 v->uv_threshold = yyvsp[0].num;
911 }
912break;
913case 26:
914#line 276 "/usr/src/usr.sbin/mrouted/cfparse.y"
915{
916
917 warn("Expected number after threshold keyword, ignored");
918
919 }
920break;
921case 27:
922#line 281 "/usr/src/usr.sbin/mrouted/cfparse.y"
923{ if (yyvsp[0].num < 1 || yyvsp[0].num > UNREACHABLE32)
924 fatal("Invalid metric %d",yyvsp[0].num);
925 v->uv_metric = yyvsp[0].num;
926 }
927break;
928case 28:
929#line 285 "/usr/src/usr.sbin/mrouted/cfparse.y"
930{
931
932 warn("Expected number after metric keyword, ignored");
933
934 }
935break;
936case 29:
937#line 290 "/usr/src/usr.sbin/mrouted/cfparse.y"
938{ if (yyvsp[0].num > MAX_RATE_LIMIT100000)
939 fatal("Invalid rate_limit %d",yyvsp[0].num);
940 v->uv_rate_limit = yyvsp[0].num;
941 }
942break;
943case 30:
944#line 294 "/usr/src/usr.sbin/mrouted/cfparse.y"
945{
946
947 warn("Expected number after rate_limit keyword, ignored");
948
949 }
950break;
951case 31:
952#line 299 "/usr/src/usr.sbin/mrouted/cfparse.y"
953{
954
955 struct vif_acl *v_acl;
956
957 v_acl = malloc(sizeof(struct vif_acl));
958 if (v_acl == NULL((void *)0))
959 fatal("out of memory");
960 VAL_TO_MASK(v_acl->acl_mask, yyvsp[0].addrmask.mask){ v_acl->acl_mask = (__uint32_t)(__builtin_constant_p(~((1
<< (32 - (yyvsp[0].addrmask.mask))) - 1)) ? (__uint32_t
)(((__uint32_t)(~((1 << (32 - (yyvsp[0].addrmask.mask))
) - 1)) & 0xff) << 24 | ((__uint32_t)(~((1 <<
(32 - (yyvsp[0].addrmask.mask))) - 1)) & 0xff00) <<
8 | ((__uint32_t)(~((1 << (32 - (yyvsp[0].addrmask.mask
))) - 1)) & 0xff0000) >> 8 | ((__uint32_t)(~((1 <<
(32 - (yyvsp[0].addrmask.mask))) - 1)) & 0xff000000) >>
24) : __swap32md(~((1 << (32 - (yyvsp[0].addrmask.mask
))) - 1))); };;
961 v_acl->acl_addr = yyvsp[0].addrmask.addr & v_acl->acl_mask;
962 if (yyvsp[0].addrmask.addr & ~v_acl->acl_mask)
963 warn("Boundary spec %s/%d has host bits set",
964 inet_fmt(yyvsp[0].addrmask.addr,s1),yyvsp[0].addrmask.mask);
965 v_acl->acl_next = v->uv_acl;
966 v->uv_acl = v_acl;
967
968 }
969break;
970case 32:
971#line 315 "/usr/src/usr.sbin/mrouted/cfparse.y"
972{
973
974 warn("Expected boundary spec after boundary keyword, ignored");
975
976 }
977break;
978case 33:
979#line 322 "/usr/src/usr.sbin/mrouted/cfparse.y"
980{ yyval.addr = yyvsp[0].addr; }
981break;
982case 34:
983#line 323 "/usr/src/usr.sbin/mrouted/cfparse.y"
984{
985 yyval.addr = valid_if(yyvsp[0].ptr);
986 if (yyval.addr == 0)
987 fatal("Invalid interface name %s",yyvsp[0].ptr);
988 }
989break;
990case 35:
991#line 330 "/usr/src/usr.sbin/mrouted/cfparse.y"
992{ yyval.addr = yyvsp[0].addr; }
993break;
994case 36:
995#line 331 "/usr/src/usr.sbin/mrouted/cfparse.y"
996{ struct hostent *hp;
997
998 if ((hp = gethostbyname(yyvsp[0].ptr)) == NULL((void *)0))
999 fatal("No such host %s", yyvsp[0].ptr);
1000
1001 if (hp->h_addr_list[1])
1002 fatal("Hostname %s does not %s",
1003 yyvsp[0].ptr, "map to a unique address");
1004
1005 bcopy(hp->h_addr_list[0], &yyval.addr,
1006 hp->h_length);
1007 }
1008break;
1009case 37:
1010#line 344 "/usr/src/usr.sbin/mrouted/cfparse.y"
1011{ yyval.addrmask = yyvsp[0].addrmask; }
1012break;
1013case 38:
1014#line 345 "/usr/src/usr.sbin/mrouted/cfparse.y"
1015{ int i;
1016
1017 for (i=0; i < numbounds; i++) {
42
←
Assuming 'i' is < 'numbounds'
→
43
←
Loop condition is true. Entering loop body
→
1018 if (!strcmp(boundlist[i].name, yyvsp[0].ptr)) {
44
←
Null pointer passed as 2nd argument to string comparison function
1019 yyval.addrmask = boundlist[i].bound;
1020 break;
1021 }
1022 }
1023 if (i == numbounds) {
1024 fatal("Invalid boundary name %s",yyvsp[0].ptr);
1025 }
1026 }
1027break;
1028case 39:
1029#line 359 "/usr/src/usr.sbin/mrouted/cfparse.y"
1030{
1031
1032 if ((ntohl(yyvsp[0].addrmask.addr)(__uint32_t)(__builtin_constant_p(yyvsp[0].addrmask.addr) ? (
__uint32_t)(((__uint32_t)(yyvsp[0].addrmask.addr) & 0xff)
<< 24 | ((__uint32_t)(yyvsp[0].addrmask.addr) & 0xff00
) << 8 | ((__uint32_t)(yyvsp[0].addrmask.addr) & 0xff0000
) >> 8 | ((__uint32_t)(yyvsp[0].addrmask.addr) & 0xff000000
) >> 24) : __swap32md(yyvsp[0].addrmask.addr)) & 0xff000000) != 0xef000000) {
1033 fatal("Boundaries must be 239.x.x.x, not %s/%d",
1034 inet_fmt(yyvsp[0].addrmask.addr, s1), yyvsp[0].addrmask.mask);
1035 }
1036 yyval.addrmask = yyvsp[0].addrmask;
1037
1038 }
1039break;
1040case 40:
1041#line 370 "/usr/src/usr.sbin/mrouted/cfparse.y"
1042{ yyval.addrmask = yyvsp[0].addrmask; }
1043break;
1044case 41:
1045#line 371 "/usr/src/usr.sbin/mrouted/cfparse.y"
1046{ yyval.addrmask.addr = yyvsp[0].addr; yyval.addrmask.mask = 0; }
1047break;
1048#line 1041 "cfparse.c"
1049 }
1050 yyssp -= yym;
1051 yystate = *yyssp;
1052 yyvsp -= yym;
1053 yym = yylhs[yyn];
1054 if (yystate
5.1
'yystate' is equal to 0
 == 0 && yym
5.2
'yym' is not equal to 0
 == 0)
31
←
Assuming 'yystate' is not equal to 0
→
1055 {
1056#if YYDEBUG0
1057 if (yydebug)
1058 printf("%sdebug: after reduction, shifting from state 0 to\
1059 state %d\n", YYPREFIX"yy", YYFINAL1);
1060#endif
1061 yystate = YYFINAL1;
1062 *++yyssp = YYFINAL1;
1063 *++yyvsp = yyval;
1064 if (yychar < 0)
1065 {
1066 if ((yychar = yylex()) < 0) yychar = 0;
1067#if YYDEBUG0
1068 if (yydebug)
1069 {
1070 yys = 0;
1071 if (yychar <= YYMAXTOKEN275) yys = yyname[yychar];
1072 if (!yys) yys = "illegal-symbol";
1073 printf("%sdebug: state %d, reading %d (%s)\n",
1074 YYPREFIX"yy", YYFINAL1, yychar, yys);
1075 }
1076#endif
1077 }
1078 if (yychar == 0) goto yyaccept;
1079 goto yyloop;
1080 }
1081 if ((yyn = yygindex[yym]) && (yyn += yystate) >= 0 &&
6
←
Assuming 'yyn' is 0
→
32
←
Assuming 'yyn' is 0
→
1082 yyn <= YYTABLESIZE358 && yycheck[yyn] == yystate)
1083 yystate = yytable[yyn];
1084 else
1085 yystate = yydgoto[yym];
1086#if YYDEBUG0
1087 if (yydebug)
1088 printf("%sdebug: after reduction, shifting from state %d \
1089to state %d\n", YYPREFIX"yy", *yyssp, yystate);
1090#endif
1091 if (yyssp >= yysslim && yygrowstack())
7
←
Assuming 'yyssp' is < 'yysslim'
→
33
←
Assuming 'yyssp' is < 'yysslim'
→
1092 {
1093 goto yyoverflow;
1094 }
1095 *++yyssp = yystate;
1096 *++yyvsp = yyval;
34
←
Null pointer value stored to field 'ptr'
→
1097 goto yyloop;
8
←
Control jumps to line 611
→
35
←
Control jumps to line 611
→
1098yyoverflow:
1099 yyerror("yacc stack overflow");
1100yyabort:
1101 if (yyss)
1102 free(yyss);
1103 if (yyvs)
1104 free(yyvs);
1105 yyss = yyssp = NULL((void *)0);
1106 yyvs = yyvsp = NULL((void *)0);
1107 yystacksize = 0;
1108 return (1);
1109yyaccept:
1110 if (yyss)
1111 free(yyss);
1112 if (yyvs)
1113 free(yyvs);
1114 yyss = yyssp = NULL((void *)0);
1115 yyvs = yyvsp = NULL((void *)0);
1116 yystacksize = 0;
1117 return (0);
1118}