--- old/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	2017-11-28 22:17:24.253576578 +0100
+++ new/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	2017-11-28 22:17:23.825581642 +0100
@@ -171,6 +171,8 @@
   // It keeps track of the humongous regions.
   HeapRegionSet _humongous_set;
 
+  virtual void initialize_serviceability();
+
   void eagerly_reclaim_humongous_regions();
   // Start a new incremental collection set for the next pause.
   void start_new_collection_set();