1  /* Regular expression tests.
       2     Copyright (C) 2002-2023 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  /* Tests supposed to not match.  */
      26  struct
      27  {
      28    const char *pattern;
      29    const char *string;
      30    int flags, nmatch;
      31  } tests[] = {
      32    { "^<\\([^~]*\\)\\([^~]\\)[^~]*~\\1\\(.\\).*|=.*\\3.*\\2",
      33      "<,.8~2,~so-|=-~.0,123456789<><", REG_NOSUB, 0 },
      34    /* In ERE, all carets must be treated as anchors.  */
      35    { "a^b", "a^b", REG_EXTENDED, 0 }
      36  };
      37  
      38  int
      39  main (void)
      40  {
      41    regex_t re;
      42    regmatch_t rm[4];
      43    size_t i;
      44    int n, ret = 0;
      45  
      46    mtrace ();
      47  
      48    for (i = 0; i < sizeof (tests) / sizeof (tests[0]); ++i)
      49      {
      50        n = regcomp (&re, tests[i].pattern, tests[i].flags);
      51        if (n != 0)
      52  	{
      53  	  char buf[500];
      54  	  regerror (n, &re, buf, sizeof (buf));
      55  	  printf ("regcomp %zd failed: %s\n", i, buf);
      56  	  ret = 1;
      57  	  continue;
      58  	}
      59  
      60        if (! regexec (&re, tests[i].string, tests[i].nmatch,
      61  		     tests[i].nmatch ? rm : NULL, 0))
      62  	{
      63  	  printf ("regexec %zd incorrectly matched\n", i);
      64  	  ret = 1;
      65  	}
      66  
      67        regfree (&re);
      68      }
      69  
      70    return ret;
      71  }