diff -r 33260c27554b -r 917d8673b5ef hotspot/src/share/vm/gc_implementation/g1/g1RemSet.hpp
--- a/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.hpp	Wed Dec 21 07:53:53 2011 -0500
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.hpp	Wed Dec 14 13:34:57 2011 -0800
@@ -40,7 +40,7 @@
 protected:
   G1CollectedHeap* _g1;
   unsigned _conc_refine_cards;
-  size_t n_workers();
+  uint n_workers();
 
 protected:
   enum SomePrivateConstants {
@@ -122,7 +122,7 @@
   // parallel thread id of the current thread, and "claim_val" is the
   // value that should be used to claim heap regions.
   void scrub_par(BitMap* region_bm, BitMap* card_bm,
-                 int worker_num, int claim_val);
+                 uint worker_num, int claim_val);
 
   // Refine the card corresponding to "card_ptr".  If "sts" is non-NULL,
   // join and leave around parts that must be atomic wrt GC.  (NULL means