--- old/src/hotspot/share/oops/method.hpp	2019-04-25 11:54:14.614822004 +0200
+++ new/src/hotspot/share/oops/method.hpp	2019-04-25 11:54:13.890797620 +0200
@@ -463,7 +463,14 @@
   address verified_code_entry();
   bool check_code() const;      // Not inline to avoid circular ref
   CompiledMethod* volatile code() const;
-  void clear_code(bool acquire_lock = true);    // Clear out any compiled code
+
+  static void unlink_code(Method *method, CompiledMethod *compare);
+  static void unlink_code(Method *method);
+
+private:
+  void locked_unlink_code();
+
+public:
   static void set_code(const methodHandle& mh, CompiledMethod* code);
   void set_adapter_entry(AdapterHandlerEntry* adapter) {
     constMethod()->set_adapter_entry(adapter);