--- a/hotspot/src/share/vm/gc/g1/g1CollectedHeap.hpp	Mon May 02 17:46:08 2016 +0000
+++ b/hotspot/src/share/vm/gc/g1/g1CollectedHeap.hpp	Mon May 02 12:07:58 2016 -0400
@@ -71,6 +71,7 @@
 class G1CollectionSet;
 class G1CollectorPolicy;
 class G1Policy;
+class G1HotCardCache;
 class G1RemSet;
 class HeapRegionRemSetIterator;
 class G1ConcurrentMark;
@@ -762,6 +763,9 @@
   // Update object copying statistics.
   void record_obj_copy_mem_stats();
 
+  // The hot card cache for remembered set insertion optimization.
+  G1HotCardCache* _hot_card_cache;
+
   // The g1 remembered set of the heap.
   G1RemSet* _g1_rem_set;