--- old/src/share/vm/gc/shared/barrierSet.hpp	2015-10-08 07:24:03.000000000 -1000
+++ new/src/share/vm/gc/shared/barrierSet.hpp	2015-10-08 07:24:03.000000000 -1000
@@ -188,6 +188,9 @@
   static void static_write_ref_array_pre(HeapWord* start, size_t count);
   static void static_write_ref_array_post(HeapWord* start, size_t count);
 
+  virtual void write_ref_nmethod_pre(oop* dst, nmethod* nm) {}
+  virtual void write_ref_nmethod_post(oop* dst, nmethod* nm) {}
+
 protected:
   virtual void write_ref_array_work(MemRegion mr) = 0;
 public: