diff -r 5e8f9713e343 -r 3636bab5e81e src/hotspot/share/runtime/handshake.cpp
--- a/src/hotspot/share/runtime/handshake.cpp	Fri Nov 29 11:26:25 2019 +0100
+++ b/src/hotspot/share/runtime/handshake.cpp	Fri Nov 29 12:09:25 2019 +0100
@@ -67,8 +67,6 @@
  public:
   bool evaluate_at_safepoint() const { return false; }
 
-  bool evaluate_concurrently() const { return false; }
-
  protected:
   HandshakeThreadsOperation* const _op;