/* Ensure that malloc_usable_size returns the request size with MALLOC_CHECK_ exported to a positive value. Copyright (C) 2012-2024 Free Software Foundation, Inc. Copyright The GNU Toolchain Authors. 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 <https://www.gnu.org/licenses/>. */ #include <malloc.h> #include <string.h> #include <stdio.h> #include <support/support.h> #include <support/check.h> static int do_test (void) { size_t usable_size; void *p = malloc (7); TEST_VERIFY_EXIT (p != NULL); usable_size = malloc_usable_size (p); TEST_COMPARE (usable_size, 7); memset (p, 0, usable_size); free (p); TEST_COMPARE (malloc_usable_size (NULL), 0); return 0; } #include "support/test-driver.c"