--- old/src/hotspot/share/runtime/thread.hpp	2020-08-31 18:03:18.134685827 +0900
+++ new/src/hotspot/share/runtime/thread.hpp	2020-08-31 18:03:18.051683576 +0900
@@ -1365,11 +1365,9 @@
     return _handshake.try_process(op);
   }
 
-#ifdef ASSERT
   Thread* active_handshaker() const {
     return _handshake.active_handshaker();
   }
-#endif
 
   // Suspend/resume support for JavaThread
  private: