From 83e25171a1cb0db643150e81b4cbe310fd6f4215 Mon Sep 17 00:00:00 2001 From: jsm28 Date: Sun, 6 Nov 2011 23:51:19 +0000 Subject: * 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 --- gcc/c-tree.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'gcc/c-tree.h') diff --git a/gcc/c-tree.h b/gcc/c-tree.h index b3e756cc076..6801db2b98b 100644 --- a/gcc/c-tree.h +++ b/gcc/c-tree.h @@ -238,6 +238,10 @@ struct c_declspecs { NULL; attributes (possibly from multiple lists) will be passed separately. */ tree attrs; + /* The base-2 log of the greatest alignment required by an _Alignas + specifier, in bytes, or -1 if no such specifiers with nonzero + alignment. */ + int align_log; /* The storage class specifier, or csc_none if none. */ enum c_storage_class storage_class; /* Any type specifier keyword used such as "int", not reflecting @@ -294,6 +298,9 @@ struct c_declspecs { BOOL_BITFIELD restrict_p : 1; /* Whether "_Sat" was specified. */ BOOL_BITFIELD saturating_p : 1; + /* Whether any alignment specifier (even with zero alignment) was + specified. */ + BOOL_BITFIELD alignas_p : 1; /* The address space that the declaration belongs to. */ addr_space_t address_space; }; @@ -510,6 +517,7 @@ extern struct c_declspecs *declspecs_add_scspec (struct c_declspecs *, tree); extern struct c_declspecs *declspecs_add_attrs (struct c_declspecs *, tree); extern struct c_declspecs *declspecs_add_addrspace (struct c_declspecs *, addr_space_t); +extern struct c_declspecs *declspecs_add_alignas (struct c_declspecs *, tree); extern struct c_declspecs *finish_declspecs (struct c_declspecs *); /* in c-objc-common.c */ -- cgit v1.2.1