--- old/src/share/vm/runtime/os.hpp	2017-08-16 10:56:42.000000000 -0500
+++ new/src/share/vm/runtime/os.hpp	2017-08-16 10:56:42.000000000 -0500
@@ -476,7 +476,6 @@
   static frame      fetch_frame_from_context(const void* ucVoid);
   static frame      fetch_frame_from_ucontext(Thread* thread, void* ucVoid);
 
-  static ExtendedPC get_thread_pc(Thread *thread);
   static void breakpoint();
   static bool start_debugging(char *buf, int buflen);