--- old/src/share/vm/gc/g1/g1OopClosures.hpp	2016-09-14 14:48:36.386875367 +0200
+++ new/src/share/vm/gc/g1/g1OopClosures.hpp	2016-09-14 14:48:36.239870818 +0200
@@ -34,7 +34,6 @@
 class G1ConcurrentMark;
 class DirtyCardToOopClosure;
 class G1CMBitMap;
-class G1CMMarkStack;
 class G1ParScanThreadState;
 class G1CMTask;
 class ReferenceProcessor;