1  /* Copyright (C) 2013-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <locale.h>
      19  #include <stdio.h>
      20  #include <stdint.h>
      21  #include <stdlib.h>
      22  #include <string.h>
      23  
      24  #include <support/check.h>
      25  #include <support/test-driver.h>
      26  
      27  /* Verify that strcoll does not crash for large strings for which it
      28     cannot cache weight lookup results.  The size is large enough to
      29     cause integer overflows on 32-bit as well as buffer overflows on
      30     64-bit.  */
      31  #define SIZE 0x40000000ul
      32  
      33  int
      34  do_test (void)
      35  {
      36    TEST_VERIFY_EXIT (setlocale (LC_COLLATE, "en_GB.UTF-8") != NULL);
      37  
      38    char *p = malloc (SIZE);
      39    if (p == NULL)
      40      {
      41        puts ("info: could not allocate memory, cannot run test");
      42        return EXIT_UNSUPPORTED;
      43      }
      44  
      45    memset (p, 'x', SIZE - 1);
      46    p[SIZE - 1] = 0;
      47    printf ("info: strcoll result: %d\n", strcoll (p, p));
      48    return 0;
      49  }
      50  
      51  /* This test can rung for a long time, but it should complete within
      52     this time on reasonably current hardware.  */
      53  #define TIMEOUT 300
      54  #include <support/test-driver.c>