--- old/src/hotspot/share/gc/z/zHeap.cpp	2019-06-04 12:49:28.986930658 +0200
+++ new/src/hotspot/share/gc/z/zHeap.cpp	2019-06-04 12:49:28.786924237 +0200
@@ -508,8 +508,8 @@
 void ZHeap::object_iterate(ObjectClosure* cl, bool visit_referents) {
   assert(SafepointSynchronize::is_at_safepoint(), "Should be at safepoint");
 
-  ZHeapIterator iter(visit_referents);
-  iter.objects_do(cl);
+  ZHeapIterator iter;
+  iter.objects_do(cl, visit_referents);
 }
 
 void ZHeap::serviceability_initialize() {