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/* Test fortify-source allocation size handling in pvalloc (bug 25401).
Copyright (C) 2020 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>
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