1  /* Test for fnmatch not reading past the end of the pattern.
       2     Copyright (C) 2014-2023 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"