--- a/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/freeChunk.hpp	Fri Oct 19 11:26:17 2012 -0700
+++ b/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/freeChunk.hpp	Tue Sep 18 23:35:42 2012 -0700
@@ -133,7 +133,7 @@
   }
 
   // Return the address past the end of this chunk
-  HeapWord* end() const { return ((HeapWord*) this) + size(); }
+  uintptr_t* end() const { return ((uintptr_t*) this) + size(); }
 
   // debugging
   void verify()             const PRODUCT_RETURN;