--- a/src/hotspot/share/gc/z/zBarrier.inline.hpp	Tue Nov 05 10:11:18 2019 +0000
+++ b/src/hotspot/share/gc/z/zBarrier.inline.hpp	Thu Oct 31 17:16:36 2019 +0100
@@ -175,6 +175,10 @@
   }
 }
 
+inline void ZBarrier::clone_oop(volatile oop src, oop dst, size_t length) {
+  HeapAccess<>::clone(src, dst, length);
+}
+
 // ON_WEAK barriers should only ever be applied to j.l.r.Reference.referents.
 inline void verify_on_weak(volatile oop* referent_addr) {
 #ifdef ASSERT