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1/* Copyright (C) 2003-2019 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
17
18#include <stdio.h>
19#include <stdint.h>
20
21#define TEST_STACK_ALIGN() \
22 ({ \
23 /* AMD64 ABI mandates 16byte aligned stack. \
24 Unfortunately, current GCC doesn't support __int128 or __float128 \
25 types, so use aligned attribute instead. */ \
26 struct _S \
27 { \
28 int _i __attribute__((aligned (16))); \
29 int _pad[3]; \
30 } _s = { ._i = 18 }; \
31 double _d = 12.0; \
32 long double _ld = 15.0; \
33 int _ret = 0; \
34 printf ("__int128: %d %p %zu\n", _s._i, &_s, __alignof (_s)); \
35 if ((((uintptr_t) &_s) & (__alignof (_s) - 1)) != 0) \
36 _ret = 1; \
37 \
38 printf ("double: %g %p %zu\n", _d, &_d, __alignof (double)); \
39 if ((((uintptr_t) &_d) & (__alignof (double) - 1)) != 0) \
40 _ret = 1; \
41 \
42 printf ("ldouble: %Lg %p %zu\n", _ld, &_ld, __alignof (long double)); \
43 if ((((uintptr_t) &_ld) & (__alignof (long double) - 1)) != 0) \
44 _ret = 1; \
45 _ret; \
46 })
47

Warning: That file was not part of the compilation database. It may have many parsing errors.