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/* Check jmp_buf sizes, alignments and offsets.
Copyright (C) 2021-2023 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 <stddef.h>
#include <setjmp.h>
#include <jmp_buf-macros.h>
#define SJSTR_HELPER(x) #x
#define SJSTR(x) SJSTR_HELPER(x)
#define TEST_SIZE(type, size) \
_Static_assert (sizeof (type) == size, \
"size of " #type " != " \
SJSTR (size))
#define TEST_ALIGN(type, align) \
_Static_assert (__alignof__ (type) == align , \
"align of " #type " != " \
SJSTR (align))
#define TEST_OFFSET(type, member, offset) \
_Static_assert (offsetof (type, member) == offset, \
"offset of " #member " field of " #type " != " \
SJSTR (offset))
/* Check if jmp_buf have the expected sizes. */
TEST_SIZE (jmp_buf, JMP_BUF_SIZE);
TEST_SIZE (sigjmp_buf, SIGJMP_BUF_SIZE);
/* Check if jmp_buf have the expected alignments. */
TEST_ALIGN (jmp_buf, JMP_BUF_ALIGN);
TEST_ALIGN (sigjmp_buf, SIGJMP_BUF_ALIGN);
/* Check if internal fields in jmp_buf have the expected offsets. */
TEST_OFFSET (struct __jmp_buf_tag, __mask_was_saved,
MASK_WAS_SAVED_OFFSET);
TEST_OFFSET (struct __jmp_buf_tag, __saved_mask,
SAVED_MASK_OFFSET);
int
main (int argc, char *argv[])
{
return 0;
}
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