--- old/src/share/vm/logging/logFileOutput.hpp	2016-06-30 18:25:10.290645475 +0900
+++ new/src/share/vm/logging/logFileOutput.hpp	2016-06-30 18:25:10.151299353 +0900
@@ -85,6 +85,7 @@
   virtual int write(const LogDecorations& decorations, const char* msg);
   virtual int write(LogMessageBuffer::Iterator msg_iterator);
   virtual void force_rotate();
+  virtual void describe(outputStream *out, size_t index);
 
   virtual const char* name() const {
     return _name;