--- a/hotspot/src/share/vm/gc_implementation/g1/g1ParScanThreadState.hpp	Tue Sep 23 14:18:55 2014 +0200
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1ParScanThreadState.hpp	Wed Sep 24 11:00:12 2014 +0200
@@ -101,7 +101,7 @@
     _refs->push(ref);
   }
 
-  template <class T> void update_rs(HeapRegion* from, T* p, int tid) {
+  template <class T> void update_rs(HeapRegion* from, T* p, uint tid) {
     // If the new value of the field points to the same region or
     // is the to-space, we don't need to include it in the Rset updates.
     if (!from->is_in_reserved(oopDesc::load_decode_heap_oop(p)) && !from->is_survivor()) {