--- a/src/hotspot/share/gc/z/zBarrier.hpp	Thu Nov 07 07:02:55 2019 +0100
+++ b/src/hotspot/share/gc/z/zBarrier.hpp	Thu Nov 07 09:23:55 2019 +0100
@@ -119,7 +119,6 @@
   static oop  load_barrier_on_oop_field(volatile narrowOop* p);
   static oop  load_barrier_on_oop_field_preloaded(volatile narrowOop* p, oop o);
   static void load_barrier_on_oop_array(volatile narrowOop* p, size_t length);
-  static void clone_oop(volatile oop src, oop dst, size_t length);
   static oop  load_barrier_on_weak_oop_field_preloaded(volatile narrowOop* p, oop o);
   static oop  load_barrier_on_phantom_oop_field_preloaded(volatile narrowOop* p, oop o);
   static oop  weak_load_barrier_on_oop_field_preloaded(volatile narrowOop* p, oop o);