--- old/src/hotspot/share/gc/serial/markSweep.hpp	2020-01-22 10:29:47.143762272 +0100
+++ new/src/hotspot/share/gc/serial/markSweep.hpp	2020-01-22 10:29:46.619753696 +0100
@@ -191,9 +191,6 @@
   virtual void do_oop(oop* p);
   virtual void do_oop(narrowOop* p);
   virtual ReferenceIterationMode reference_iteration_mode() { return DO_FIELDS; }
-
-  // This closure provides its own oop verification code.
-  debug_only(virtual bool should_verify_oops() { return false; })
 };
 
 class PreservedMark {