--- old/src/share/vm/memory/universe.cpp	2017-06-28 15:44:09.000000000 -0700
+++ new/src/share/vm/memory/universe.cpp	2017-06-28 15:44:09.000000000 -0700
@@ -873,10 +873,10 @@
       return "Non-zero disjoint base";
     case HeapBasedNarrowOop:
       return "Non-zero based";
+    default:
+      ShouldNotReachHere();
+      return "";
   }
-
-  ShouldNotReachHere();
-  return "";
 }