--- a/hotspot/src/share/vm/c1/c1_FrameMap.cpp	Tue Aug 26 15:49:40 2008 -0700
+++ b/hotspot/src/share/vm/c1/c1_FrameMap.cpp	Wed Aug 27 00:21:55 2008 -0700
@@ -278,7 +278,7 @@
 ByteSize FrameMap::sp_offset_for_monitor_base(const int index) const {
   int end_of_spills = round_to(first_available_sp_in_frame + _reserved_argument_area_size, sizeof(double)) +
     _num_spills * spill_slot_size_in_bytes;
-  int offset = round_to(end_of_spills, HeapWordSize) + index * sizeof(BasicObjectLock);
+  int offset = (int) round_to(end_of_spills, HeapWordSize) + index * sizeof(BasicObjectLock);
   return in_ByteSize(offset);
 }