src/hotspot/share/gc/g1/g1ConcurrentMark.hpp

@@ -34,10 +34,11 @@
 #include "memory/allocation.hpp"
 
 class ConcurrentGCTimer;
 class G1ConcurrentMarkThread;
 class G1CollectedHeap;
+class G1CMOopClosure;
 class G1CMTask;
 class G1ConcurrentMark;
 class G1OldTracer;
 class G1RegionToSpaceMapper;
 class G1SurvivorRegions;