PR c++/78369 - {} as default argument

	* call.c (build_special_member_call): Handle CONSTRUCTOR.

From-SVN: r242562

gcc/cp/ChangeLog

 2016-11-17  Jason Merrill  <jason@redhat.com>
 
+	PR c++/78369 - {} as default argument
+	* call.c (build_special_member_call): Handle CONSTRUCTOR.
+
 	PR c++/68377
 	* parser.c (cp_parser_fold_expression): Check TREE_NO_WARNING.
 

gcc/cp/call.c

@@ -8317,7 +8317,8 @@ build_special_member_call (tree instance, tree name, vec<tree, va_gc> **args,
       if (!reference_related_p (class_type, TREE_TYPE (arg)))
 	arg = perform_implicit_conversion_flags (class_type, arg,
 						 tf_warning, flags);
-      if (TREE_CODE (arg) == TARGET_EXPR
+      if ((TREE_CODE (arg) == TARGET_EXPR
+	   || TREE_CODE (arg) == CONSTRUCTOR)
 	  && (same_type_ignoring_top_level_qualifiers_p
 	      (class_type, TREE_TYPE (arg))))
 	{

gcc/testsuite/g++.dg/overload/defarg11.C

+// PR c++/78369
+// { dg-do compile { target c++11 } }
+
+struct A { };
+inline void f(struct A a = {})  {}
+
+int main()
+{
+  f();
+  return 0;
+}