--- a/hotspot/src/share/vm/gc/cms/compactibleFreeListSpace.hpp	Fri Sep 04 17:33:56 2015 -0700
+++ b/hotspot/src/share/vm/gc/cms/compactibleFreeListSpace.hpp	Tue Aug 18 21:32:21 2015 +0200
@@ -99,7 +99,7 @@
   BlockOffsetArrayNonContigSpace _bt;
 
   CMSCollector* _collector;
-  ConcurrentMarkSweepGeneration* _gen;
+  ConcurrentMarkSweepGeneration* _old_gen;
 
   // Data structures for free blocks (used during allocation/sweeping)