--- a/src/hotspot/cpu/zero/frame_zero.inline.hpp	Wed Mar 21 17:09:34 2018 -0400
+++ b/src/hotspot/cpu/zero/frame_zero.inline.hpp	Wed Mar 21 19:45:24 2018 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2007, 2008, 2009, 2010 Red Hat, Inc.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -130,10 +130,6 @@
   return monitor_end - 1;
 }
 
-inline jint frame::interpreter_frame_expression_stack_direction() {
-  return -1;
-}
-
 // Return a unique id for this frame. The id must have a value where
 // we can distinguish identity and younger/older relationship. NULL
 // represents an invalid (incomparable) frame.