--- old/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	2018-02-21 18:45:30.932745377 +0100
+++ new/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	2018-02-21 18:45:30.752739245 +0100
@@ -49,6 +49,7 @@
 #include "gc/shared/gcHeapSummary.hpp"
 #include "gc/shared/plab.hpp"
 #include "gc/shared/preservedMarks.hpp"
+#include "gc/shared/softRefPolicy.hpp"
 #include "memory/memRegion.hpp"
 #include "services/memoryManager.hpp"
 #include "utilities/stack.hpp"
@@ -150,6 +151,8 @@
   WorkGang* _workers;
   G1CollectorPolicy* _collector_policy;
 
+  SoftRefPolicy      _soft_ref_policy;
+
   GCMemoryManager _memory_manager;
   GCMemoryManager _full_gc_memory_manager;
 
@@ -998,6 +1001,8 @@
 
   virtual CollectorPolicy* collector_policy() const;
 
+  virtual SoftRefPolicy* soft_ref_policy();
+
   // Adaptive size policy.  No such thing for g1.
   virtual AdaptiveSizePolicy* size_policy() { return NULL; }