--- old/src/share/vm/gc/shared/cardTableModRefBS.inline.hpp	2016-04-06 17:17:34.158383782 +0200
+++ new/src/share/vm/gc/shared/cardTableModRefBS.inline.hpp	2016-04-06 17:17:34.062383781 +0200
@@ -30,7 +30,7 @@
 #include "runtime/orderAccess.inline.hpp"
 
 template <class T> inline void CardTableModRefBS::inline_write_ref_field(T* field, oop newVal, bool release) {
-  jbyte* byte = byte_for((void*)field);
+  volatile jbyte* byte = byte_for((void*)field);
   if (release) {
     // Perform a releasing store if requested.
     OrderAccess::release_store((volatile jbyte*) byte, dirty_card);