--- old/src/share/vm/gc_interface/gcCause.cpp	2015-01-27 20:46:17.259776200 +0900
+++ new/src/share/vm/gc_interface/gcCause.cpp	2015-01-27 20:46:16.614776200 +0900
@@ -103,6 +103,9 @@
     case _last_ditch_collection:
       return "Last ditch collection";
 
+    case _dcmd_gc_run:
+      return "GC.run DCmd";
+
     case _last_gc_cause:
       return "ILLEGAL VALUE - last gc cause - ILLEGAL VALUE";