--- a/hotspot/src/share/vm/gc/g1/g1OopClosures.hpp	Thu Dec 10 14:24:26 2015 +0000
+++ b/hotspot/src/share/vm/gc/g1/g1OopClosures.hpp	Wed Dec 09 16:05:24 2015 +0100
@@ -121,7 +121,7 @@
   G1MarkPromotedFromRoot
 };
 
-template <G1Barrier barrier, G1Mark do_mark_object>
+template <G1Barrier barrier, G1Mark do_mark_object, bool use_ext>
 class G1ParCopyClosure : public G1ParCopyHelper {
 public:
   G1ParCopyClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) :