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- /* A substitute for POSIX 2008 <stddef.h>, for platforms that have issues.
- Copyright (C) 2009-2011 Free Software Foundation, Inc.
- 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
- along with this program; if not, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
- /* 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. */
- # if !(defined _@GUARD_PREFIX@_STDDEF_H && defined _GL_STDDEF_WINT_T)
- # ifdef __need_wint_t
- # undef _@GUARD_PREFIX@_STDDEF_H
- # define _GL_STDDEF_WINT_T
- # endif
- # @INCLUDE_NEXT@ @NEXT_STDDEF_H@
- # endif
- #else
- /* Normal invocation convention. */
- # ifndef _@GUARD_PREFIX@_STDDEF_H
- /* The include_next requires a split double-inclusion guard. */
- # @INCLUDE_NEXT@ @NEXT_STDDEF_H@
- # ifndef _@GUARD_PREFIX@_STDDEF_H
- # define _@GUARD_PREFIX@_STDDEF_H
- /* 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
- # endif /* _@GUARD_PREFIX@_STDDEF_H */
- # endif /* _@GUARD_PREFIX@_STDDEF_H */
- #endif /* __need_XXX */
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