--- a/hotspot/src/share/vm/gc/g1/g1ConcurrentMark.hpp	Tue Apr 12 14:46:02 2016 -0400
+++ b/hotspot/src/share/vm/gc/g1/g1ConcurrentMark.hpp	Wed Apr 13 17:00:54 2016 -0400
@@ -621,6 +621,7 @@
   void print_summary_info();
 
   void print_worker_threads_on(outputStream* st) const;
+  void threads_do(ThreadClosure* tc) const;
 
   void print_on_error(outputStream* st) const;