--- old/src/share/vm/opto/rootnode.hpp	2016-07-03 23:43:07.668478543 +0900
+++ new/src/share/vm/opto/rootnode.hpp	2016-07-03 23:43:07.530479116 +0900
@@ -39,7 +39,7 @@
     del_req(2);
     del_req(1);
   }
-  virtual int   Opcode() const;
+  virtual uint  Opcode() const;
   virtual const Node *is_block_proj() const { return this; }
   virtual const Type *bottom_type() const { return Type::BOTTOM; }
   virtual Node* Identity(PhaseGVN* phase) { return this; }
@@ -52,7 +52,7 @@
 class HaltNode : public Node {
 public:
   HaltNode( Node *ctrl, Node *frameptr );
-  virtual int Opcode() const;
+  virtual uint Opcode() const;
   virtual bool  pinned() const { return true; };
   virtual Node *Ideal(PhaseGVN *phase, bool can_reshape);
   virtual const Type* Value(PhaseGVN* phase) const;