--- old/src/share/vm/gc/shared/gcCause.cpp	2015-05-28 12:12:05.109961563 +0900
+++ new/src/share/vm/gc/shared/gcCause.cpp	2015-05-28 12:12:04.984295767 +0900
@@ -103,6 +103,9 @@
     case _last_ditch_collection:
       return "Last ditch collection";
 
+    case _dcmd_gc_run:
+      return "Diagnostic Command";
+
     case _last_gc_cause:
       return "ILLEGAL VALUE - last gc cause - ILLEGAL VALUE";