re PR c++/26905 (default-visibility class symbol improperly resolved as hidden-visibility)
PR c++/26905
PR c++/26612
PR c++/27000
PR c++/26984
PR c++/19134
* tree.c (build_decl_stat): Don't hande #pragma visibility here.
* c-common.c (c_determine_visibility): Handle it here.
* c-decl.c (finish_decl): Call c_determine_visibility for
functions, too.
* flags.h (enum symbol_visibility): Sort from most to least visibility.
* tree.h: Likewise.
* varasm.c (default_assemble_visibility): Likewise.
* c-common.c (handle_visibility_attribute): Complain about trying
to give visibility to an already defined class, or trying to change
declared visibility. Always attach the attribute.
* cp/decl2.c (determine_visibility): Overhaul.
(determine_visibility_from_class): Likewise.
(min_vis_r, type_visibility, constrain_visibility): New fns.
(constrain_visibility_for_template): Likewise.
(constrain_class_visibility): Likewise.
* cp/decl.c (cp_finish_decl): Call determine_visibility for function
decls, too.
* cp/name-lookup.c (pushtag): Call determine_visibility.
* cp/decl.c (duplicate_decls): Don't copy visibility from template to
specialization.
* cp/pt.c (check_explicit_specialization): Likewise.
(lookup_template_class, tsubst_decl): Call determine_visibility.
* cp/class.c (finish_struct_1): Call constrain_class_visibility.
PR c++/26905
PR c++/21675
PR c++/17470
* cp/parser.c (cp_parser_explicit_instantiation): Pass the attributes
to grokdeclarator.
(cp_parser_type_specifier): Allow 'enum __attribute ((...)) E'.
(cp_parser_enum_specifier): Likewise.
(cp_parser_elaborated_type_specifier): Apply attributes if this
declares only the class.
(cp_parser_class_specifier): Apply leading attributes immediately.
* cp/semantics.c (begin_class_definition): Add attributes parameter,
apply them to the type.
* attribs.c (decl_attributes): Ignore type-in-place attributes
once the type has been defined.
PR c++/21581
PR c++/25915
* cp/tree.c (decl_anon_ns_mem_p): New function.
* cp/cp-tree.h: Declare it.
* cp/decl2.c (determine_visibility): Make anonymous namespace
members static.
(min_vis_r, constrain_visibility): Likewise.
* cp/rtti.c (create_pseudo_type_info): Set TREE_PUBLIC on
pseudo-types.
* cp/decl.c (cxx_init_decl_processing): Set TREE_PUBLIC on
global_namespace.
* cp/name-lookup.c (push_namespace_with_attribs): Don't set TREE_PUBLIC
on anonymous namespaces.
From-SVN: r115086