--- old/src/share/vm/gc/shared/gcLocker.hpp	2015-11-19 15:35:20.486128801 +0100
+++ new/src/share/vm/gc/shared/gcLocker.hpp	2015-11-19 15:35:20.370128805 +0100
@@ -64,6 +64,7 @@
     return _jni_lock_count > 0;
   }
 
+  static void log_debug_jni(const char* msg);
  public:
   // Accessors
   static bool is_active() {