posix/bug-regex12.c

   1 /* Regular expression tests.
   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 <sys/types.h>
  21 #include <mcheck.h>
  22 #include <regex.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25
  26 /* Tests supposed to not match.  */
  27 struct
  28 {
  29   const char *pattern;
  30   const char *string;
  31   int flags, nmatch;
  32 } tests[] = {
  33   { "^<\\([^~]*\\)\\([^~]\\)[^~]*~\\1\\(.\\).*|=.*\\3.*\\2",
  34     "<,.8~2,~so-|=-~.0,123456789<><", REG_NOSUB, 0 },
  35   /* In ERE, all carets must be treated as anchors.  */
  36   { "a^b", "a^b", REG_EXTENDED, 0 }
  37 };
  38
  39 int
  40 main (void)
  41 {
  42   regex_t re;
  43   regmatch_t rm[4];
  44   size_t i;
  45   int n, ret = 0;
  46
  47   mtrace ();
  48
  49   for (i = 0; i < sizeof (tests) / sizeof (tests[0]); ++i)
  50     {
  51       n = regcomp (&re, tests[i].pattern, tests[i].flags);
  52       if (n != 0)
  53         {
  54           char buf[500];
  55           regerror (n, &re, buf, sizeof (buf));
  56           printf ("regcomp %zd failed: %s\n", i, buf);
  57           ret = 1;
  58           continue;
  59         }
  60
  61       if (! regexec (&re, tests[i].string, tests[i].nmatch,
  62                      tests[i].nmatch ? rm : NULL, 0))
  63         {
  64           printf ("regexec %zd incorrectly matched\n", i);
  65           ret = 1;
  66         }
  67
  68       regfree (&re);
  69     }
  70
  71   return ret;
  72 }