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| author | jsm28 <jsm28@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-11-06 23:51:19 +0000 |
|---|---|---|
| committer | jsm28 <jsm28@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-11-06 23:51:19 +0000 |
| commit | 83e25171a1cb0db643150e81b4cbe310fd6f4215 (patch) | |
| tree | 665bdd624cc911e728a962281f278e5fbf2aefce /gcc/ginclude/stddef.h | |
| parent | 7cc301360be9e2df43673fe7e6c273f28496b31a (diff) | |
| download | gcc-83e25171a1cb0db643150e81b4cbe310fd6f4215.tar.gz | |
* c-decl.c (shadow_tag_warned, grokdeclarator): Handle _Alignas
specifiers.
(build_null_declspecs): Initialize align_log and alignas_p fields.
(declspecs_add_alignas): New.
* c-parser.c (c_token_starts_declspecs): Handle RID_ALIGNAS.
(c_parser_declspecs): Handle _Alignas specifiers.
(c_parser_alignas_specifier): New.
(c_parser_alignof_expression): Diagnose alignof use for non-C1X.
Diagnose _Alignof (expression).
* c-tree.h (struct c_declspecs): Add align_log and alignas_p
fields.
(declspecs_add_alignas): Declare.
* ginclude/stddef.h (max_align_t): Define for C1X and C++11.
* ginclude/stdalign.h: New.
* Makefile.in (USER_H): Add stdalign.h.
c-family:
* c-common.c (c_common_reswords): Add _Alignas and _Alignof.
(c_sizeof_or_alignof_type): Diagnose alignof applied to a function
type.
(check_user_alignment): New. Split out of
handle_aligned_attribute. Disallow integer constants with
noninteger types. Conditionally allow zero.
(handle_aligned_attribute): Use check_user_alignment.
* c-common.h (RID_ALIGNAS, check_user_alignment): New.
testsuite:
* g++.dg/cpp0x/alignof3.C, gcc.dg/c1x-align-1.c,
gcc.dg/c1x-align-2.c, gcc.dg/c1x-align-3.c, gcc.dg/c1x-align-4.c,
gcc.dg/c90-align-1.c, gcc.dg/c99-align-1.c: New tests.
* gcc.dg/gnu89-const-expr-1.c, gcc.dg/gnu90-const-expr-1.c,
gcc.dg/gnu99-const-expr-1.c, gcc.dg/gnu99-static-1.c: Update
expected diagnostics.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@181048 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/ginclude/stddef.h')
| -rw-r--r-- | gcc/ginclude/stddef.h | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/gcc/ginclude/stddef.h b/gcc/ginclude/stddef.h index 565ef7b8f84..1cc3cb4e75a 100644 --- a/gcc/ginclude/stddef.h +++ b/gcc/ginclude/stddef.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1989, 1997, 1998, 1999, 2000, 2002, 2004, 2009 +/* Copyright (C) 1989, 1997, 1998, 1999, 2000, 2002, 2004, 2009, 2011 Free Software Foundation, Inc. This file is part of GCC. @@ -412,6 +412,20 @@ typedef __WINT_TYPE__ wint_t; /* Offset of member MEMBER in a struct of type TYPE. */ #define offsetof(TYPE, MEMBER) __builtin_offsetof (TYPE, MEMBER) +#if (defined (__STDC_VERSION__) && __STDC_VERSION__ > 199901L) \ + || (defined(__cplusplus) && __cplusplus >= 201103L) +#ifndef _GCC_MAX_ALIGN_T +#define _GCC_MAX_ALIGN_T +/* Type whose alignment is supported in every context and is at least + as great as that of any standard type not using alignment + specifiers. */ +typedef struct { + long long __max_align_ll __attribute__((__aligned__(__alignof__(long long)))); + long double __max_align_ld __attribute__((__aligned__(__alignof__(long double)))); +} max_align_t; +#endif +#endif /* C1X or C++11. */ + #endif /* _STDDEF_H was defined this time */ #endif /* !_STDDEF_H && !_STDDEF_H_ && !_ANSI_STDDEF_H && !__STDDEF_H__ |