2011-01-09 06:57:07 +00:00
|
|
|
/* A substitute for POSIX 2008 <stddef.h>, for platforms that have issues.
|
|
|
|
|
|
2014-01-01 07:43:34 +00:00
|
|
|
Copyright (C) 2009-2014 Free Software Foundation, Inc.
|
2011-01-09 06:57:07 +00:00
|
|
|
|
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
|
|
|
it under the terms of the GNU General Public License as published by
|
|
|
|
|
the Free Software Foundation; either version 3, or (at your option)
|
|
|
|
|
any later version.
|
|
|
|
|
|
|
|
|
|
This program 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 General Public License for more details.
|
|
|
|
|
|
|
|
|
|
You should have received a copy of the GNU General Public License
|
2012-05-26 23:14:36 +00:00
|
|
|
along with this program; if not, see <http://www.gnu.org/licenses/>. */
|
2011-01-09 06:57:07 +00:00
|
|
|
|
|
|
|
|
/* Written by Eric Blake. */
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* POSIX 2008 <stddef.h> for platforms that have issues.
|
|
|
|
|
* <http://www.opengroup.org/susv3xbd/stddef.h.html>
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#if __GNUC__ >= 3
|
|
|
|
|
@PRAGMA_SYSTEM_HEADER@
|
|
|
|
|
#endif
|
|
|
|
|
@PRAGMA_COLUMNS@
|
|
|
|
|
|
|
|
|
|
#if defined __need_wchar_t || defined __need_size_t \
|
|
|
|
|
|| defined __need_ptrdiff_t || defined __need_NULL \
|
|
|
|
|
|| defined __need_wint_t
|
|
|
|
|
/* Special invocation convention inside gcc header files. In
|
|
|
|
|
particular, gcc provides a version of <stddef.h> that blindly
|
|
|
|
|
redefines NULL even when __need_wint_t was defined, even though
|
|
|
|
|
wint_t is not normally provided by <stddef.h>. Hence, we must
|
|
|
|
|
remember if special invocation has ever been used to obtain wint_t,
|
|
|
|
|
in which case we need to clean up NULL yet again. */
|
|
|
|
|
|
2011-05-29 21:52:18 +00:00
|
|
|
# if !(defined _@GUARD_PREFIX@_STDDEF_H && defined _GL_STDDEF_WINT_T)
|
2011-01-09 06:57:07 +00:00
|
|
|
# ifdef __need_wint_t
|
2011-05-29 21:52:18 +00:00
|
|
|
# undef _@GUARD_PREFIX@_STDDEF_H
|
2011-01-09 06:57:07 +00:00
|
|
|
# define _GL_STDDEF_WINT_T
|
|
|
|
|
# endif
|
|
|
|
|
# @INCLUDE_NEXT@ @NEXT_STDDEF_H@
|
|
|
|
|
# endif
|
|
|
|
|
|
|
|
|
|
#else
|
|
|
|
|
/* Normal invocation convention. */
|
|
|
|
|
|
2011-05-29 21:52:18 +00:00
|
|
|
# ifndef _@GUARD_PREFIX@_STDDEF_H
|
2011-01-09 06:57:07 +00:00
|
|
|
|
|
|
|
|
/* The include_next requires a split double-inclusion guard. */
|
|
|
|
|
|
|
|
|
|
# @INCLUDE_NEXT@ @NEXT_STDDEF_H@
|
|
|
|
|
|
2011-05-29 21:52:18 +00:00
|
|
|
# ifndef _@GUARD_PREFIX@_STDDEF_H
|
|
|
|
|
# define _@GUARD_PREFIX@_STDDEF_H
|
2011-01-09 06:57:07 +00:00
|
|
|
|
|
|
|
|
/* On NetBSD 5.0, the definition of NULL lacks proper parentheses. */
|
|
|
|
|
#if @REPLACE_NULL@
|
|
|
|
|
# undef NULL
|
|
|
|
|
# ifdef __cplusplus
|
|
|
|
|
/* ISO C++ says that the macro NULL must expand to an integer constant
|
|
|
|
|
expression, hence '((void *) 0)' is not allowed in C++. */
|
|
|
|
|
# if __GNUG__ >= 3
|
|
|
|
|
/* GNU C++ has a __null macro that behaves like an integer ('int' or
|
|
|
|
|
'long') but has the same size as a pointer. Use that, to avoid
|
|
|
|
|
warnings. */
|
|
|
|
|
# define NULL __null
|
|
|
|
|
# else
|
|
|
|
|
# define NULL 0L
|
|
|
|
|
# endif
|
|
|
|
|
# else
|
|
|
|
|
# define NULL ((void *) 0)
|
|
|
|
|
# endif
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
/* Some platforms lack wchar_t. */
|
|
|
|
|
#if !@HAVE_WCHAR_T@
|
|
|
|
|
# define wchar_t int
|
|
|
|
|
#endif
|
|
|
|
|
|
2011-05-29 21:52:18 +00:00
|
|
|
# endif /* _@GUARD_PREFIX@_STDDEF_H */
|
|
|
|
|
# endif /* _@GUARD_PREFIX@_STDDEF_H */
|
2011-01-09 06:57:07 +00:00
|
|
|
#endif /* __need_XXX */
|
