--- a/hotspot/src/share/vm/services/heapDumper.cpp	Wed Sep 25 17:47:51 2013 +0200
+++ b/hotspot/src/share/vm/services/heapDumper.cpp	Thu Sep 26 10:25:02 2013 -0400
@@ -563,7 +563,7 @@
 }
 
 void DumpWriter::write_objectID(oop o) {
-  address a = (address)((uintptr_t)o);
+  address a = (address)o;
 #ifdef _LP64
   write_u8((u8)a);
 #else