--- old/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	2017-11-20 16:28:29.319371167 +0100
+++ new/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	2017-11-20 16:28:29.056374261 +0100
@@ -203,6 +203,8 @@
   // than the current allocation region(s).
   size_t _summary_bytes_used;
 
+  virtual GCServicabilitySupport* create_servicability_support();
+
   void increase_used(size_t bytes);
   void decrease_used(size_t bytes);