--- old/src/hotspot/share/gc/g1/g1OopClosures.hpp	2018-10-25 11:37:27.033484705 +0200
+++ new/src/hotspot/share/gc/g1/g1OopClosures.hpp	2018-10-25 11:37:26.614471796 +0200
@@ -43,7 +43,6 @@
 protected:
   G1CollectedHeap* _g1h;
   G1ParScanThreadState* _par_scan_state;
-  bool _from_is_young;
 
   G1ScanClosureBase(G1CollectedHeap* g1h, G1ParScanThreadState* par_scan_state);
   ~G1ScanClosureBase() { }
@@ -56,8 +55,6 @@
 public:
   virtual ReferenceIterationMode reference_iteration_mode() { return DO_FIELDS; }
 
-  void set_from_is_young(bool from_is_young) { _from_is_young = from_is_young; }
-
   inline void trim_queue_partially();
 };
 
@@ -87,9 +84,13 @@
 
 // This closure is applied to the fields of the objects that have just been copied during evacuation.
 class G1ScanEvacuatedObjClosure : public G1ScanClosureBase {
+  bool _scanning_in_young;
+
 public:
   G1ScanEvacuatedObjClosure(G1CollectedHeap* g1h, G1ParScanThreadState* par_scan_state) :
-    G1ScanClosureBase(g1h, par_scan_state) { }
+    G1ScanClosureBase(g1h, par_scan_state), _scanning_in_young(false) { }
+
+  void set_scanning_in_young(bool scanning_in_young) { _scanning_in_young = scanning_in_young; }
 
   template <class T> void do_oop_work(T* p);
   virtual void do_oop(oop* p)          { do_oop_work(p); }