--- old/src/share/vm/runtime/globals.hpp	2016-12-12 09:51:37.718525831 -0800
+++ new/src/share/vm/runtime/globals.hpp	2016-12-12 09:51:37.626525833 -0800
@@ -4044,7 +4044,11 @@
   diagnostic(bool, CompilerDirectivesPrint, false,                          \
              "Print compiler directives on installation.")                  \
   diagnostic(int,  CompilerDirectivesLimit, 50,                             \
-             "Limit on number of compiler directives.")
+             "Limit on number of compiler directives.")                     \
+                                                                            \
+  product(ccstr, HeapDir, NULL,                                             \
+          "Path to the directoy where a temporary file will be created      \
+           to use as the backing store for Java Heap.")
 
 
 /*