1  /* Test re_search with multi-byte characters in UTF-8.
       2     Copyright (C) 2013-2023 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  #define _GNU_SOURCE 1
      20  #include <stdio.h>
      21  #include <string.h>
      22  #include <locale.h>
      23  #include <regex.h>
      24  
      25  static int
      26  do_test (void)
      27  {
      28    struct re_pattern_buffer r;
      29    /* ကျွန်ုပ်x */
      30    const char *s = "\xe1\x80\x80\xe1\x80\xbb\xe1\x80\xbd\xe1\x80\x94\xe1\x80\xba\xe1\x80\xaf\xe1\x80\x95\xe1\x80\xbax";
      31  
      32    if (setlocale (LC_ALL, "en_US.UTF-8") == NULL)
      33      {
      34        puts ("setlocale failed");
      35        return 1;
      36      }
      37    memset (&r, 0, sizeof (r));
      38  
      39    re_compile_pattern ("[^x]x", 5, &r);
      40    /* This was triggering a buffer overflow.  */
      41    re_search (&r, s, strlen (s), 0, strlen (s), 0);
      42    return 0;
      43  }
      44  
      45  #define TEST_FUNCTION do_test ()
      46  #include "../test-skeleton.c"