gdb/testsuite/gdb.base/stale-infcall.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2012-2021 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #include <setjmp.h>
  19 #include <string.h>
  20 #include <stdlib.h>
  21
  22 #define BUFSIZE 0x1000
  23
  24 static jmp_buf jmp;
  25
  26 void
  27 infcall (void)
  28 {
  29   longjmp (jmp, 1); /* test-next */
  30 }
  31
  32 static void
  33 run1 (void)
  34 {
  35   char buf[BUFSIZE / 2];
  36   int dummy = 0;
  37
  38   dummy++; /* break-run1 */
  39 }
  40
  41 static char buf_zero[BUFSIZE];
  42
  43 static void
  44 run2 (void)
  45 {
  46   char buf[BUFSIZE];
  47
  48   memset (buf, 0, sizeof (buf));
  49
  50   if (memcmp (buf, buf_zero, sizeof (buf)) != 0) /* break-run2 */
  51     abort (); /* break-fail */
  52 }
  53
  54 int
  55 main ()
  56 {
  57   if (setjmp (jmp) == 0) /* test-pass */
  58     infcall ();
  59
  60   if (setjmp (jmp) == 0) /* test-fail */
  61     run1 ();
  62   else
  63     run2 ();
  64
  65   return 0; /* break-exit */
  66 }