--- old/src/hotspot/share/gc/z/zBarrierSet.hpp	2019-09-26 16:22:08.717564477 +0200
+++ new/src/hotspot/share/gc/z/zBarrierSet.hpp	2019-09-26 16:22:08.461560085 +0200
@@ -84,6 +84,8 @@
 
     static void clone_in_heap(oop src, oop dst, size_t size);
 
+    static void value_copy_in_heap(void* src, void* dst, ValueKlass* md);
+
     //
     // Not in heap
     //