--- old/src/hotspot/share/gc/g1/g1BarrierSet.hpp	2018-04-11 11:32:59.612142051 +0200
+++ new/src/hotspot/share/gc/g1/g1BarrierSet.hpp	2018-04-11 11:32:59.408133238 +0200
@@ -74,6 +74,8 @@
   void write_ref_field_post(T* field, oop new_val);
   void write_ref_field_post_slow(volatile jbyte* byte);
 
+  virtual void on_thread_create(Thread* thread);
+  virtual void on_thread_destroy(Thread* thread);
   virtual void on_thread_attach(JavaThread* thread);
   virtual void on_thread_detach(JavaThread* thread);