diff -r 487bd00f4ea8 -r 1587306fe23f src/hotspot/share/oops/oop.hpp
--- a/src/hotspot/share/oops/oop.hpp	Wed Oct 24 14:59:21 2018 +0200
+++ b/src/hotspot/share/oops/oop.hpp	Wed Oct 24 16:22:34 2018 +0200
@@ -273,7 +273,7 @@
   // Exactly one thread succeeds in inserting the forwarding pointer, and
   // this call returns "NULL" for that thread; any other thread has the
   // value of the forwarding pointer returned and does not modify "this".
-  inline oop forward_to_atomic(oop p, atomic_memory_order order = memory_order_conservative);
+  inline oop forward_to_atomic(oop p, markOop compare, atomic_memory_order order = memory_order_conservative);
 
   inline oop forwardee() const;
   inline oop forwardee_acquire() const;