--- old/src/share/vm/opto/castnode.hpp	2017-07-18 14:43:38.102997222 +0200
+++ new/src/share/vm/opto/castnode.hpp	2017-07-18 14:43:33.964006341 +0200
@@ -114,6 +114,7 @@
 
   virtual Node* Identity(PhaseGVN* phase);
   virtual const Type* Value(PhaseGVN* phase) const;
+  virtual Node* Ideal(PhaseGVN *phase, bool can_reshape);
   virtual int   Opcode() const;
   virtual uint  ideal_reg() const { return Op_RegP; }
 };