--- old/src/hotspot/share/gc/serial/serialHeap.hpp	2017-11-20 16:28:32.592332660 +0100
+++ new/src/hotspot/share/gc/serial/serialHeap.hpp	2017-11-20 16:28:32.329335754 +0100
@@ -30,6 +30,9 @@
 class GenCollectorPolicy;
 
 class SerialHeap : public GenCollectedHeap {
+private:
+  virtual GCServicabilitySupport* create_servicability_support();
+
 protected:
   virtual void check_gen_kinds();
 
@@ -52,7 +55,6 @@
   virtual bool card_mark_must_follow_store() const {
     return false;
   }
-
 };
 
 #endif // SHARE_VM_GC_CMS_CMSHEAP_HPP