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malloc/tst-pvalloc-fortify.c
48 строк
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Paul Eggert
Update copyright dates with scripts/update-copyrights
02 янв 2026, 00:42
02 янв 2026, 00:42
66f3e92
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/* Test fortify-source allocation size handling in pvalloc (bug 25401). Copyright (C) 2020-2026 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; see the file COPYING.LIB. If not, see <https://www.gnu.org/licenses/>. */ #undef _FORTIFY_SOURCE #define _FORTIFY_SOURCE 2 #include <malloc.h> #include <string.h> #include <support/check.h> #include <support/xunistd.h> #include <unistd.h> static int do_test (void) { /* The test below assumes that pvalloc rounds up the allocation size to at least 8. */ TEST_VERIFY (xsysconf (_SC_PAGESIZE) >= 8); void *p = pvalloc (5); TEST_VERIFY_EXIT (p != NULL); /* This is valid assuming the page size is at least 8 because pvalloc rounds up the allocation size to a multiple of the page size. Due to bug 25041, this used to trigger a compiler warning. */ strcpy (p, "abcdefg"); asm ("" : : "g" (p) : "memory"); /* Optimization barrier. */ TEST_VERIFY (malloc_usable_size (p) >= xsysconf (_SC_PAGESIZE)); return 0; } #include <support/test-driver.c>