--- a/src/hotspot/share/runtime/orderAccess.hpp	Mon Mar 25 09:35:40 2019 +0100
+++ b/src/hotspot/share/runtime/orderAccess.hpp	Thu Mar 28 11:08:23 2019 +0100
@@ -266,6 +266,8 @@
   static void     release();
   static void     fence();
 
+  static void     cross_modify_fence();
+
   template <typename T>
   static T        load_acquire(const volatile T* p);