re PR c++/65954 (gcc segfaults on the following input with a syntax error)

	cp/
	PR c++/65954
	* typeck.c (finish_class_member_access_expr): Diagnose failed
	lookup of enum class member.

	testsuite/
	* g++.dg/cpp0x/pr65954.C: New.

From-SVN: r223430

gcc/cp/ChangeLog

+2015-05-19  Nathan sidwell  <nathan@acm.org>
+
+	PR c++/65954
+	* typeck.c (finish_class_member_access_expr): Diagnose failed
+	lookup of enum class member.
+
 2015-05-19  Jakub Jelinek  <jakub@redhat.com>
 
 	PR middle-end/66199

gcc/cp/typeck.c

@@ -2731,6 +2731,14 @@ finish_class_member_access_expr (tree object, tree name, bool template_p,
 		  return error_mark_node;
 		}
 	      tree val = lookup_enumerator (scope, name);
+	      if (!val)
+		{
+		  if (complain & tf_error)
+		    error ("%qD is not a member of %qD",
+			   name, scope);
+		  return error_mark_node;
+		}
+	      
 	      if (TREE_SIDE_EFFECTS (object))
 		val = build2 (COMPOUND_EXPR, TREE_TYPE (val), object, val);
 	      return val;

gcc/testsuite/ChangeLog

+2015-05-19  Nathan sidwell  <nathan@acm.org>
+
+	* g++.dg/cpp0x/pr65954.C: New.
+
 2015-05-20  Oleg Endo  <olegendo@gcc.gnu.org>
 
 	* gcc.target/sh/pr64366.c: Remove -m4 -ml from dg-options.

gcc/testsuite/g++.dg/cpp0x/pr65954.C

+// { dg-do compile { target c++11 } }
+
+struct Shape {
+  enum class Type
+  { Circle, Square };
+};
+
+
+void Foo (Shape &shape)
+{
+  +shape.Type::NOPE; // { dg-error "is not a member of" }
+}