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/* Copyright (C) 2003-2021 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/>. */
#include <stdio.h>
#include <stdint.h>
#define TEST_STACK_ALIGN() \
({ \
/* AMD64 ABI mandates 16byte aligned stack. \
Unfortunately, current GCC doesn't support __int128 or __float128 \
types, so use aligned attribute instead. */ \
struct _S \
{ \
int _i __attribute__((aligned (16))); \
int _pad[3]; \
} _s = { ._i = 18 }; \
double _d = 12.0; \
long double _ld = 15.0; \
int _ret = 0; \
printf ("__int128: %d %p %zu\n", _s._i, &_s, __alignof (_s)); \
if ((((uintptr_t) &_s) & (__alignof (_s) - 1)) != 0) \
_ret = 1; \
\
printf ("double: %g %p %zu\n", _d, &_d, __alignof (double)); \
if ((((uintptr_t) &_d) & (__alignof (double) - 1)) != 0) \
_ret = 1; \
\
printf ("ldouble: %Lg %p %zu\n", _ld, &_ld, __alignof (long double)); \
if ((((uintptr_t) &_ld) & (__alignof (long double) - 1)) != 0) \
_ret = 1; \
_ret; \
})
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