--- old/src/java.base/share/classes/java/lang/invoke/MethodHandleImpl.java	2017-11-04 15:52:32.196160510 -0700
+++ new/src/java.base/share/classes/java/lang/invoke/MethodHandleImpl.java	2017-11-04 15:52:32.012160512 -0700
@@ -1784,6 +1784,11 @@
                 MemberName memberName = (MemberName)mname;
                 return memberName.getName();
             }
+            @Override
+            public Class<?> getDeclaringClass(Object mname) {
+                MemberName memberName = (MemberName)mname;
+                return memberName.getDeclaringClass();
+            }
 
             @Override
             public MethodType getMethodType(Object mname) {