posix/bug-regex7.c

   1 /* Test for regs allocation in re_search and re_match.
   2    Copyright (C) 2002 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Stepan Kasal <kasal@math.cas.cz>, 2002.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <locale.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <sys/types.h>
  26 #include <regex.h>
  27
  28
  29 int
  30 main (void)
  31 {
  32   struct re_pattern_buffer regex;
  33   struct re_registers regs;
  34   const char *s;
  35   int match, n;
  36   int result = 0;
  37
  38   memset (&regex, '\0', sizeof (regex));
  39   regs.start = regs.end = NULL;
  40   regs.num_regs = 0;
  41   s = re_compile_pattern ("a", 1, &regex);
  42   if (s != NULL)
  43     {
  44       puts ("failed to compile pattern \"a\"");
  45       result = 1;
  46     }
  47   else
  48     {
  49       match = re_search (&regex, "baobab", 6, 0, 6, &regs);
  50       n = 1;
  51       if (match != 1)
  52         {
  53           printf ("re_search returned %d, expected 1\n", match);
  54           result = 1;
  55         }
  56       else if (regs.num_regs <= n || regs.start[n] != -1 || regs.end[n] != -1)
  57         {
  58           puts ("re_search failed to fill the -1 sentinel");
  59           result = 1;
  60         }
  61     }
  62
  63   free (regex.buffer);
  64   memset (&regex, '\0', sizeof (regex));
  65
  66   s = re_compile_pattern ("\\(\\(\\(a\\)\\)\\)", 13, &regex);
  67   if (s != NULL)
  68     {
  69       puts ("failed to compile pattern /\\(\\(\\(a\\)\\)\\)/");
  70       result = 1;
  71     }
  72   else
  73     {
  74       match = re_match (&regex, "apl", 3, 0, &regs);
  75       n = 4;
  76       if (match != 1)
  77         {
  78           printf ("re_match returned %d, expected 1\n", match);
  79           result = 1;
  80         }
  81       else if (regs.num_regs <= n || regs.start[n] != -1 || regs.end[n] != -1)
  82         {
  83           puts ("re_match failed to fill the -1 sentinel");
  84           result = 1;
  85         }
  86     }
  87
  88   if (result == 0)
  89     puts (" -> OK");
  90
  91   return result;
  92 }