posix/tst-fnmatch3.c

   1 /* Test for fnmatch not reading past the end of the pattern.
   2    Copyright (C) 2014-2021 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 <fnmatch.h>
  20 #include <sys/mman.h>
  21 #include <string.h>
  22 #include <unistd.h>
  23
  24 int
  25 do_bz18036 (void)
  26 {
  27   const char p[] = "**(!()";
  28   const int pagesize = getpagesize ();
  29
  30   char *pattern = mmap (0, 2 * pagesize, PROT_READ|PROT_WRITE,
  31                         MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
  32   if (pattern == MAP_FAILED) return 1;
  33
  34   mprotect (pattern + pagesize, pagesize, PROT_NONE);
  35   memset (pattern, ' ', pagesize);
  36   strcpy (pattern, p);
  37
  38   return fnmatch (pattern, p, FNM_EXTMATCH);
  39 }
  40
  41 int
  42 do_test (void)
  43 {
  44   if (fnmatch ("[[:alpha:]'[:alpha:]\0]", "a", 0) != FNM_NOMATCH)
  45     return 1;
  46   if (fnmatch ("[a[.\0.]]", "a", 0) != FNM_NOMATCH)
  47     return 1;
  48   return do_bz18036 ();
  49 }
  50
  51 #define TEST_FUNCTION do_test ()
  52 #include "../test-skeleton.c"