--- old/src/hotspot/share/gc/z/zCollectedHeap.hpp	2019-11-20 00:10:32.990155652 +0100
+++ new/src/hotspot/share/gc/z/zCollectedHeap.hpp	2019-11-20 00:10:32.464138065 +0100
@@ -98,7 +98,6 @@
   virtual GrowableArray<MemoryPool*> memory_pools();
 
   virtual void object_iterate(ObjectClosure* cl);
-  virtual void safe_object_iterate(ObjectClosure* cl);
 
   virtual void register_nmethod(nmethod* nm);
   virtual void unregister_nmethod(nmethod* nm);