re PR c++/56567 (ICE with lambda return type deduction and braced-init-list)

	PR c++/56567
	* semantics.c (apply_deduced_return_type): Don't allow returning
	std::initializer_list.

From-SVN: r196548

gcc/cp/ChangeLog

+2013-03-08  Jason Merrill  <jason@redhat.com>
+
+	PR c++/56567
+	* semantics.c (apply_deduced_return_type): Don't allow returning
+	std::initializer_list.
+
 2013-03-06  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR c++/56534

gcc/cp/semantics.c

@@ -9061,6 +9061,12 @@ apply_deduced_return_type (tree fco, tree return_type)
   if (return_type == error_mark_node)
     return;
 
+  if (is_std_init_list (return_type))
+    {
+      error ("returning %qT", return_type);
+      return_type = void_type_node;
+    }
+
   if (LAMBDA_FUNCTION_P (fco))
     {
       tree lambda = CLASSTYPE_LAMBDA_EXPR (current_class_type);

gcc/testsuite/g++.dg/cpp0x/lambda/lambda-initlist3.C

+// PR c++/56567
+// { dg-require-effective-target c++11 }
+
+#include <initializer_list>
+
+int main()
+{
+  []{ return { 1, 2 }; }();	// { dg-error "initializer_list" }
+}
+
+// { dg-prune-output "return-statement with a value" }