posix/bug-regex8.c

   1 /* Test for the STOP parameter of re_match_2 and re_search_2.
   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 <locale.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <sys/types.h>
  24 #include <regex.h>
  25
  26
  27 int
  28 main (void)
  29 {
  30   struct re_pattern_buffer regex;
  31   const char *s;
  32   int match[4];
  33
  34   memset (&regex, '\0', sizeof (regex));
  35
  36   s = re_compile_pattern ("xy$", 3, &regex);
  37   if (s != NULL)
  38     {
  39       puts ("failed to compile pattern \"xy$\"");
  40       return 1;
  41     }
  42   else
  43     match[0] = re_match_2(&regex,"xyz",3,NULL,0,0,NULL,2);
  44
  45   free (regex.buffer);
  46   memset (&regex, '\0', sizeof (regex));
  47
  48   s = re_compile_pattern ("xy\\>", 4, &regex);
  49   if (s != NULL)
  50     {
  51       puts ("failed to compile pattern \"xy\\>\"");
  52       return 1;
  53     }
  54   else
  55     match[1] = re_search_2(&regex,"xyz",3,NULL,0,0,2,NULL,2);
  56
  57   free (regex.buffer);
  58   memset (&regex, '\0', sizeof (regex));
  59
  60   s = re_compile_pattern ("xy \\<", 5, &regex);
  61   if (s != NULL)
  62     {
  63       puts ("failed to compile pattern \"xy \\<\"");
  64       return 1;
  65     }
  66   else
  67     {
  68       match[2] = re_match_2(&regex,"xy  ",4,NULL,0,0,NULL,3);
  69       match[3] = re_match_2(&regex,"xy z",4,NULL,0,0,NULL,3);
  70     }
  71
  72   if (match[0] != -1 || match[1] != -1 || match[2] != -1 || match[3] != 3)
  73     {
  74       printf ("re_{match,search}_2 returned %d,%d,%d,%d, expected -1,-1,-1,3\n",
  75                 match[0], match[1], match[2], match[3]);
  76       return 1;
  77     }
  78
  79   puts (" -> OK");
  80
  81   return 0;
  82 }