--- a/src/hotspot/share/runtime/jniHandles.hpp	Fri Jan 04 20:58:35 2019 +0100
+++ b/src/hotspot/share/runtime/jniHandles.hpp	Fri Jan 04 15:06:01 2019 -0500
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2019, 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
@@ -28,7 +28,9 @@
 #include "memory/allocation.hpp"
 #include "runtime/handles.hpp"
 
+class JavaThread;
 class OopStorage;
+class Thread;
 
 // Interface for creating and resolving local/global JNI handles