diff -r c517646eef23 -r c3a720eefe82 src/share/vm/gc_implementation/g1/heapRegionRemSet.cpp
--- a/src/share/vm/gc_implementation/g1/heapRegionRemSet.cpp	Fri Mar 13 18:39:22 2009 -0700
+++ b/src/share/vm/gc_implementation/g1/heapRegionRemSet.cpp	Mon Mar 16 15:06:33 2009 -0700
@@ -508,7 +508,7 @@
   typedef PosParPRT* PosParPRTPtr;
   if (_max_fine_entries == 0) {
     assert(_mod_max_fine_entries_mask == 0, "Both or none.");
-    _max_fine_entries = (1 << G1LogRSRegionEntries);
+    _max_fine_entries = (size_t)(1 << G1LogRSRegionEntries);
     _mod_max_fine_entries_mask = _max_fine_entries - 1;
 #if SAMPLE_FOR_EVICTION
     assert(_fine_eviction_sample_size == 0