--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegionRemSet.hpp	Tue Sep 23 14:18:55 2014 +0200
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegionRemSet.hpp	Wed Sep 24 11:00:12 2014 +0200
@@ -179,7 +179,7 @@
 
   // For now.  Could "expand" some tables in the future, so that this made
   // sense.
-  void add_reference(OopOrNarrowOopStar from, int tid);
+  void add_reference(OopOrNarrowOopStar from, uint tid);
 
   // Removes any entries shown by the given bitmaps to contain only dead
   // objects.
@@ -301,7 +301,7 @@
   }
 
   // Used in the parallel case.
-  void add_reference(OopOrNarrowOopStar from, int tid) {
+  void add_reference(OopOrNarrowOopStar from, uint tid) {
     _other_regions.add_reference(from, tid);
   }