--- old/src/share/vm/gc/shared/strongRootsScope.hpp	2015-05-20 10:47:46.702460757 +0200
+++ new/src/share/vm/gc/shared/strongRootsScope.hpp	2015-05-20 10:47:46.558455899 +0200
@@ -28,7 +28,7 @@
 #include "memory/allocation.hpp"
 
 class MarkScope : public StackObj {
- public:
+ protected:
   MarkScope();
   ~MarkScope();
 };