summaryrefslogtreecommitdiff
path: root/lib/stddef.in.h
diff options
context:
space:
mode:
authorManuel A. Fernandez Montecelo <manuel.montezelo@gmail.com>2016-05-27 14:35:40 +0100
committerManuel A. Fernandez Montecelo <manuel.montezelo@gmail.com>2016-05-27 14:35:40 +0100
commitb1de003dac299705a7f01c997d2b866bafe39926 (patch)
tree1cc16a3877e945116387a380f7f3023f81fa36e4 /lib/stddef.in.h
parent752fd7247bc223bcea35bd89cf56d1c08ead9ba6 (diff)
parent3590c846d4c2febbc05b4ad6b14a06edc549e453 (diff)
Merge tag 'upstream/0.9.6+really0.9.6'
Upstream version 0.9.6+really0.9.6
Diffstat (limited to 'lib/stddef.in.h')
-rw-r--r--lib/stddef.in.h66
1 files changed, 44 insertions, 22 deletions
diff --git a/lib/stddef.in.h b/lib/stddef.in.h
index b1dfb67..383d441 100644
--- a/lib/stddef.in.h
+++ b/lib/stddef.in.h
@@ -1,6 +1,6 @@
/* A substitute for POSIX 2008 <stddef.h>, for platforms that have issues.
- Copyright (C) 2009, 2010 Free Software Foundation, Inc.
+ Copyright (C) 2009-2015 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
@@ -13,8 +13,7 @@
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser 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. */
+ along with this program; if not, see <http://www.gnu.org/licenses/>. */
/* Written by Eric Blake. */
@@ -26,6 +25,7 @@
#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 \
@@ -37,9 +37,8 @@
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)
+# if !(defined _@GUARD_PREFIX@_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@
@@ -48,39 +47,62 @@
#else
/* Normal invocation convention. */
-# ifndef _GL_STDDEF_H
+# ifndef _@GUARD_PREFIX@_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
+# if (@REPLACE_NULL@ \
+ && (!defined _@GUARD_PREFIX@_STDDEF_H || defined _GL_STDDEF_WINT_T))
+# 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
+# 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
+# define NULL __null
+# else
+# define NULL 0L
+# endif
+# else
+# define NULL ((void *) 0)
+# endif
# endif
-# else
-# define NULL ((void *) 0)
-# endif
-#endif
+
+# ifndef _@GUARD_PREFIX@_STDDEF_H
+# define _@GUARD_PREFIX@_STDDEF_H
/* Some platforms lack wchar_t. */
#if !@HAVE_WCHAR_T@
# define wchar_t int
#endif
-# endif /* _GL_STDDEF_H */
-# endif /* _GL_STDDEF_H */
+/* Some platforms lack max_align_t. */
+#if !@HAVE_MAX_ALIGN_T@
+/* On the x86, the maximum storage alignment of double, long, etc. is 4,
+ but GCC's C11 ABI for x86 says that max_align_t has an alignment of 8,
+ and the C11 standard allows this. Work around this problem by
+ using __alignof__ (which returns 8 for double) rather than _Alignof
+ (which returns 4), and align each union member accordingly. */
+# ifdef __GNUC__
+# define _GL_STDDEF_ALIGNAS(type) \
+ __attribute__ ((__aligned__ (__alignof__ (type))))
+# else
+# define _GL_STDDEF_ALIGNAS(type) /* */
+# endif
+typedef union
+{
+ char *__p _GL_STDDEF_ALIGNAS (char *);
+ double __d _GL_STDDEF_ALIGNAS (double);
+ long double __ld _GL_STDDEF_ALIGNAS (long double);
+ long int __i _GL_STDDEF_ALIGNAS (long int);
+} max_align_t;
+#endif
+
+# endif /* _@GUARD_PREFIX@_STDDEF_H */
+# endif /* _@GUARD_PREFIX@_STDDEF_H */
#endif /* __need_XXX */