--- old/src/hotspot/share/gc/z/zCollectedHeap.cpp	2019-11-20 00:10:32.296132448 +0100
+++ new/src/hotspot/share/gc/z/zCollectedHeap.cpp	2019-11-20 00:10:31.828116800 +0100
@@ -246,10 +246,6 @@
   _heap.object_iterate(cl, true /* visit_weaks */);
 }
 
-void ZCollectedHeap::safe_object_iterate(ObjectClosure* cl) {
-  _heap.object_iterate(cl, true /* visit_weaks */);
-}
-
 void ZCollectedHeap::register_nmethod(nmethod* nm) {
   ZNMethod::register_nmethod(nm);
 }