--- old/src/hotspot/share/runtime/synchronizer.hpp	2019-03-11 14:27:21.994354107 +0100
+++ new/src/hotspot/share/runtime/synchronizer.hpp	2019-03-11 14:27:21.782354109 +0100
@@ -120,7 +120,6 @@
 
   // Returns the identity hash value for an oop
   // NOTE: It may cause monitor inflation
-  static intptr_t identity_hash_value_for(Handle obj);
   static intptr_t FastHashCode(Thread * Self, oop obj);
 
   // java.lang.Thread support