posix/bug-regex12.c

   1 /* Regular expression tests.
   2    Copyright (C) 2002-2024 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 }