PR libstdc++/37907

	Support std::is_standard_layout and std::is_trivial traits,
	change POD to C++0x version (except for layout).
	* gcc/c-common.c (c_common_reswords): Add __is_standard_layout
	and __is_trivial.
	* gcc/c-common.h (enum rid): Add RID_IS_STD_LAYOUT and RID_IS_TRIVIAL.
	* gcc/cp/cp-tree.h (enum cp_trait_kind): Add CPTK_IS_STD_LAYOUT,
	CPTK_IS_TRIVIAL.
	(struct lang_type_class): Add non_std_layout.
	(CLASSTYPE_NON_STD_LAYOUT): New.
	* gcc/cp/class.c (check_bases): Set it.
	(check_field_decls): Likewise.
	(check_bases_and_members): Likewise.
	* gcc/cp/parser.c (cp_parser_primary_expression): Handle RID_IS_STD_LAYOUT,
	RID_IS_TRIVIAL.
	(cp_parser_trait_expr): Likewise.
	* gcc/cp/semantics.c (trait_expr_value): Handle CPTK_IS_STD_LAYOUT,
	CPTK_IS_TRIVIAL.
	(finish_trait_expr): Likewise.
	* gcc/cp/tree.c (scalarish_type_p, trivial_type_p, std_layout_type_p): New.
	(pod_type_p): Use them.
	* gcc/cp/typeck.c (build_class_member_access_expr): Check
	CLASSTYPE_NON_STD_LAYOUT rather than CLASSTYPE_NON_POD_P.
	* libstdc++-v3/include/std/type_traits: Add is_standard_layout, is_trivial.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@149721 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 6 insertions, 0 deletions

diff --git a/gcc/cp/cxx-pretty-print.c b/gcc/cp/cxx-pretty-print.c
index b8732896aa4..0b13bc1eb8d 100644
--- a/gcc/cp/cxx-pretty-print.c
+++ b/gcc/cp/cxx-pretty-print.c
@@ -2296,6 +2296,12 @@ pp_cxx_trait_expression (cxx_pretty_printer *pp, tree t)
     case CPTK_IS_POLYMORPHIC:
       pp_cxx_ws_string (pp, "__is_polymorphic");
       break;
+    case CPTK_IS_STD_LAYOUT:
+      pp_cxx_ws_string (pp, "__is_std_layout");
+      break;
+    case CPTK_IS_TRIVIAL:
+      pp_cxx_ws_string (pp, "__is_trivial");
+      break;
     case CPTK_IS_UNION:
       pp_cxx_ws_string (pp, "__is_union");
       break;