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  }