--- old/src/hotspot/share/gc/z/zHeapIterator.cpp	2020-01-22 10:29:53.907872964 +0100
+++ new/src/hotspot/share/gc/z/zHeapIterator.cpp	2020-01-22 10:29:53.443865370 +0100
@@ -117,12 +117,6 @@
   virtual void do_oop(narrowOop* p) {
     ShouldNotReachHere();
   }
-
-#ifdef ASSERT
-  virtual bool should_verify_oops() {
-    return false;
-  }
-#endif
 };
 
 ZHeapIterator::ZHeapIterator() :