--- old/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp	2014-12-22 15:23:30.187970633 +0100
+++ new/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp	2014-12-22 15:23:30.120968663 +0100
@@ -214,6 +214,9 @@
   friend class G1MarkSweep;
   friend class HeapRegionClaimer;
 
+  // Testing classes.
+  friend class G1CheckCSetFastTableClosure;
+
 private:
   // The one and only G1CollectedHeap, so static functions can find it.
   static G1CollectedHeap* _g1h;