posix/bug-regex10.c

   1 /* Test for re_match with non-zero start.
   2    Copyright (C) 2002-2020 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Jakub Jelinek <jakub@redhat.com>, 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, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 #include <locale.h>
  21 #include <stdio.h>
  22 #include <string.h>
  23 #include <regex.h>
  24
  25 int
  26 main (void)
  27 {
  28   struct re_pattern_buffer regex;
  29   struct re_registers regs;
  30   const char *s;
  31   int match;
  32   int result = 0;
  33
  34   regs.num_regs = 1;
  35   memset (&regex, '\0', sizeof (regex));
  36   s = re_compile_pattern ("[abc]*d", 7, &regex);
  37   if (s != NULL)
  38     {
  39       puts ("re_compile_pattern return non-NULL value");
  40       result = 1;
  41     }
  42   else
  43     {
  44       match = re_match (&regex, "foacabdxy", 9, 2, &regs);
  45       if (match != 5)
  46         {
  47           printf ("re_match returned %d, expected 5\n", match);
  48           result = 1;
  49         }
  50       else if (regs.start[0] != 2 || regs.end[0] != 7)
  51         {
  52           printf ("re_match returned %d..%d, expected 2..7\n",
  53                   regs.start[0], regs.end[0]);
  54           result = 1;
  55         }
  56         puts (" -> OK");
  57     }
  58
  59   return result;
  60 }