--- old/src/hotspot/share/gc/shared/barrierSet.hpp	2019-02-25 16:56:58.651084230 -0500
+++ new/src/hotspot/share/gc/shared/barrierSet.hpp	2019-02-25 16:56:58.267063983 -0500
@@ -130,8 +130,8 @@
   virtual void on_slowpath_allocation_exit(JavaThread* thread, oop new_obj) {}
   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) {}
+  virtual void on_thread_attach(Thread* thread) {}
+  virtual void on_thread_detach(Thread* thread) {}
   virtual void make_parsable(JavaThread* thread) {}
 
 #ifdef CHECK_UNHANDLED_OOPS