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/* Test memcmp with size_t in the lower 32 bits of 64-bit register.
Copyright (C) 2019-2024 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
<https://www.gnu.org/licenses/>. */
#define TEST_MAIN
#ifdef WIDE
# define TEST_NAME "wmemcmp"
#else
# define TEST_NAME "memcmp"
#endif
#include "test-size_t.h"
#ifdef WIDE
# include <inttypes.h>
# include <wchar.h>
# define MEMCMP wmemcmp
# define CHAR wchar_t
#else
# define MEMCMP memcmp
# define CHAR char
#endif
IMPL (MEMCMP, 1)
typedef int (*proto_t) (const CHAR *, const CHAR *, size_t);
static int
__attribute__ ((noinline, noclone))
do_memcmp (parameter_t a, parameter_t b)
{
return CALL (&b, a.p, b.p, a.len);
}
static int
test_main (void)
{
test_init ();
parameter_t dest = { { page_size / sizeof (CHAR) }, buf1 };
parameter_t src = { { 0 }, buf2 };
memcpy (buf1, buf2, page_size);
CHAR *p = (CHAR *) buf1;
p[page_size / sizeof (CHAR) - 1] = (CHAR) 1;
int ret = 0;
FOR_EACH_IMPL (impl, 0)
{
src.fn = impl->fn;
int res = do_memcmp (dest, src);
if (res >= 0)
{
error (0, 0, "Wrong result in function %s: %i >= 0",
impl->name, res);
ret = 1;
}
}
return ret ? EXIT_FAILURE : EXIT_SUCCESS;
}
#include <support/test-driver.c>
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