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/* Test alignalloc and alignfree.
Copyright 2022-2023 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
#include <alignalloc.h>
#include <stdint.h>
#include <string.h>
#include "intprops.h"
#include "signature.h"
SIGNATURE_CHECK (alignalloc, void *, (idx_t, idx_t));
SIGNATURE_CHECK (alignfree, void, (void *));
#include "macros.h"
static void
test_alignalloc (idx_t alignment, idx_t size)
{
void *p = alignalloc (alignment, size);
if (p)
{
memset (p, 0, size);
ASSERT ((uintptr_t) p % alignment == 0);
}
alignfree (p);
}
int
main ()
{
/* Check that alignalloc returns properly aligned storage when it succeeds.
Stop at 16 MiB alignments because circa-2022 AddressSanitizer goes
catatonic with large alignments in posix_memalign,
and there seems to be little point to testing them. */
for (idx_t alignment = 1; alignment <= 16 * 1024 * 1024; alignment *= 2)
for (idx_t size = 1; size <= 1024; size *= 2)
{
test_alignalloc (alignment, size - 1);
test_alignalloc (alignment, size);
test_alignalloc (alignment, size + 1);
}
/* Check that alignfree is a no-op on null pointers. */
alignfree (NULL);
return 0;
}
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