/* Copyright (C) 2013-2016 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ #include <locale.h> #include <stdio.h> #include <stdint.h> #include <stdlib.h> #include <string.h> /* Verify that strcoll does not crash for large strings for which it cannot cache weight lookup results. The size is large enough to cause integer overflows on 32-bit as well as buffer overflows on 64-bit. The test should work reasonably reliably when overcommit is disabled, but it obviously depends on how much memory the system has. There's a limitation to this test in that it does not run to completion. Actually collating such a large string can take days and we can't have xcheck running that long. For that reason, we run the test for about 5 minutes and then assume that everything is fine if there are no crashes. */ #define SIZE 0x40000000ul int do_test (void) { if (setlocale (LC_COLLATE, "en_GB.UTF-8") == NULL) { puts ("setlocale failed, cannot test for overflow"); return 0; } char *p = malloc (SIZE); if (p == NULL) { puts ("could not allocate memory"); return 1; } memset (p, 'x', SIZE - 1); p[SIZE - 1] = 0; printf ("%d\n", strcoll (p, p)); return 0; } #define TIMEOUT 300 #define EXPECTED_SIGNAL SIGALRM #define EXPECTED_STATUS 0 #define TEST_FUNCTION do_test () #include "../test-skeleton.c"