diff -r 000000000000 -r 959103a6100f test/tools/javac/GoodCovar.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/tools/javac/GoodCovar.java	Wed Apr 27 01:34:52 2016 +0800
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 5007379 5034529
+ * @summary multiple methods inheritence
+ * @author gafter
+ *
+ * @compile GoodCovar.java
+ */
+
+package good.covar;
+
+interface A {
+    A f();
+}
+interface B {
+    B f();
+}
+class C {
+    public D f() { return null; }
+}
+class D extends C implements A, B {
+    // conflicting methods inherited from A, B, but no error required
+    // because they are overridden by the inherited method from C
+}