diff -r 000000000000 -r 959103a6100f test/tools/javac/defaultMethods/Neg02.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/tools/javac/defaultMethods/Neg02.java	Wed Apr 27 01:34:52 2016 +0800
@@ -0,0 +1,26 @@
+/* @test /nodynamiccopyright/
+ * @bug 7192246
+ * @summary check that ill-formed MI hierarchies do not compile
+ * @compile/fail/ref=Neg02.out -XDrawDiagnostics Neg02.java
+ */
+
+class Neg02 {
+     interface A {
+         default void m() { Neg02.impl(this); }
+     }
+
+     interface B {
+         default void m() { Neg02.impl(this); }
+     }
+
+     static class X implements A, B { } //error
+
+     void test(X x) {
+         x.m();
+         ((A)x).m();
+         ((B)x).m();
+     }
+
+     static void impl(A a) { }
+     static void impl(B b) { }
+}