freebsd-dev/include/stddef.h
Ed Schouten f49db4cf69 Use __ISO_C_VISIBLE, as opposed to testing __STDC_VERSION__.
FreeBSD's C library uses __STDC_VERSION__ to determine whether the
compiler provides language features specific to a certain version of the
C standard. __ISO_C_VISIBLE is used to specify which library features
need to be exposed.

max_align_t currently uses __STDC_VERSION__, even though it should be
using __ISO_C_VISIBLE to remain consistent with the rest of the headers
in include/.

Reviewed by:	dim
MFC after:	1 month
Differential Revision:	https://reviews.freebsd.org/D11303
2017-06-22 18:39:52 +00:00

84 lines
2.5 KiB
C

/*-
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)stddef.h 8.1 (Berkeley) 6/2/93
*
* $FreeBSD$
*/
#ifndef _STDDEF_H_
#define _STDDEF_H_
#include <sys/cdefs.h>
#include <sys/_null.h>
#include <sys/_types.h>
#ifndef _PTRDIFF_T_DECLARED
typedef __ptrdiff_t ptrdiff_t;
#define _PTRDIFF_T_DECLARED
#endif
#if __BSD_VISIBLE
#ifndef _RUNE_T_DECLARED
typedef __rune_t rune_t;
#define _RUNE_T_DECLARED
#endif
#endif
#ifndef _SIZE_T_DECLARED
typedef __size_t size_t;
#define _SIZE_T_DECLARED
#endif
#ifndef __cplusplus
#ifndef _WCHAR_T_DECLARED
typedef ___wchar_t wchar_t;
#define _WCHAR_T_DECLARED
#endif
#endif
#if __ISO_C_VISIBLE >= 2011 || __cplusplus >= 201103L
#ifndef __CLANG_MAX_ALIGN_T_DEFINED
typedef __max_align_t max_align_t;
#define __CLANG_MAX_ALIGN_T_DEFINED
#define _GCC_MAX_ALIGN_T
#endif
#endif
#define offsetof(type, member) __offsetof(type, member)
#if __EXT1_VISIBLE
/* ISO/IEC 9899:2011 K.3.3.2 */
#ifndef _RSIZE_T_DEFINED
#define _RSIZE_T_DEFINED
typedef size_t rsize_t;
#endif
#endif /* __EXT1_VISIBLE */
#endif /* _STDDEF_H_ */