diff -r 163a4d4fa951 -r 1751733b089b hotspot/src/share/vm/gc_implementation/g1/heapRegion.cpp
--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegion.cpp	Thu Jul 03 03:17:29 2008 -0700
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegion.cpp	Thu Jul 10 09:29:54 2008 -0700
@@ -793,8 +793,8 @@
     // will pick up the right saved_mark_word() as the high water mark
     // of the region. Either way, the behaviour will be correct.
     ContiguousSpace::set_saved_mark();
-    OrderAccess::release_store_ptr((volatile intptr_t*) &_gc_time_stamp,
-                                   (intptr_t) curr_gc_time_stamp);
+    _gc_time_stamp = curr_gc_time_stamp;
+    OrderAccess::fence();
   }
 }