posix/bug-regex2.c

   1 /* Test for memory handling in regex.
   2    Copyright (C) 2001-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library 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 GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <sys/types.h>
  20 #include <mcheck.h>
  21 #include <regex.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24
  25
  26 static const char text[] = "This is a test; this is a test";
  27
  28 int
  29 main (void)
  30 {
  31   regex_t re;
  32   regmatch_t rm[2];
  33   int n;
  34
  35   mtrace ();
  36
  37   n = regcomp (&re, "a test", REG_EXTENDED);
  38   if (n != 0)
  39     {
  40       char buf[500];
  41       regerror (n, &re, buf, sizeof (buf));
  42       printf ("regcomp failed: %s\n", buf);
  43       exit (1);
  44     }
  45
  46   for (n = 0; n < 20; ++n)
  47     regexec (&re, text, 2, rm, 0);
  48
  49   regfree (&re);
  50
  51   return 0;
  52 }