--- old/src/share/vm/gc_implementation/parallelScavenge/psPromotionLAB.hpp	2011-09-12 16:10:55.000000000 +0200
+++ new/src/share/vm/gc_implementation/parallelScavenge/psPromotionLAB.hpp	2011-09-12 16:10:55.000000000 +0200
@@ -73,7 +73,7 @@
 
   bool is_flushed()                  { return _state == flushed; }
 
-  bool unallocate_object(oop obj);
+  bool unallocate_object(HeapWord* obj, size_t obj_size);
 
   // Returns a subregion containing all objects in this space.
   MemRegion used_region()            { return MemRegion(bottom(), top()); }