Implement C++11 delegating constructors.

	* cp-tree.h (enum cpp0x_warn_str): Add CPP0X_DELEGATING_CTORS.
	* error.c (maybe_warn_cpp0x): Adjust.
	* parser.c (cp_parser_mem_initializer_list): Use it.  Diagnose
	multiple initializers if a delegating initializer is present.
	* call.c (build_special_member_call): Convert an assert into an if.
	* init.c (perform_target_ctor): New.
	(emit_mem_initializers): Use it.
	(expand_member_init, expand_default_init): Adjust.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@182012 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 5 insertions, 0 deletions

diff --git a/gcc/cp/error.c b/gcc/cp/error.c
index 4940a783353..21d6781567e 100644
--- a/gcc/cp/error.c
+++ b/gcc/cp/error.c
@@ -3304,6 +3304,11 @@ maybe_warn_cpp0x (cpp0x_warn_str str)
 		 "user-defined literals "
 		 "only available with -std=c++11 or -std=gnu++11");
 	break;
+      case CPP0X_DELEGATING_CTORS:
+	pedwarn (input_location, 0,
+		 "delegating constructors "
+		 "only available with -std=c++11 or -std=gnu++11");
+        break;
       default:
 	gcc_unreachable ();
       }