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authorThomas White <taw@bitwiz.org.uk>2010-12-07 19:58:51 -0700
committerThomas White <taw@physics.org>2012-02-22 15:27:08 +0100
commit93e1ac85ffb4947080adcd4699fcccdbcf757fa5 (patch)
tree5fbdfa8952ce2de15fb58e62e9c1aef17ccb2d0c /lib/stddef.in.h
parent508de274d96794a194694cf75b9711d1b8882301 (diff)
Add Gnulib 'lib' items
Diffstat (limited to 'lib/stddef.in.h')
-rw-r--r--lib/stddef.in.h87
1 files changed, 87 insertions, 0 deletions
diff --git a/lib/stddef.in.h b/lib/stddef.in.h
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+/* A substitute for POSIX 2008 <stddef.h>, for platforms that have issues.
+
+ Copyright (C) 2009, 2010 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 _GL_STDDEF_H && defined _GL_STDDEF_WINT_T)
+# ifdef __need_wint_t
+# undef _GL_STDDEF_H
+# define _GL_STDDEF_WINT_T
+# endif
+# @INCLUDE_NEXT@ @NEXT_STDDEF_H@
+# endif
+
+#else
+/* Normal invocation convention. */
+
+# ifndef _GL_STDDEF_H
+
+/* The include_next requires a split double-inclusion guard. */
+
+# @INCLUDE_NEXT@ @NEXT_STDDEF_H@
+
+# ifndef _GL_STDDEF_H
+# define _GL_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 /* _GL_STDDEF_H */
+# endif /* _GL_STDDEF_H */
+#endif /* __need_XXX */