--- old/src/hotspot/share/runtime/globals.hpp	2017-11-03 11:29:27.033404921 -0700
+++ new/src/hotspot/share/runtime/globals.hpp	2017-11-03 11:29:26.806406891 -0700
@@ -4065,7 +4065,11 @@
   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, AllocateHeapAt, NULL,                                      \
+          "Path to the directoy where a temporary file will be created "    \
+          "to use as the backing store for Java Heap.")
 
 
 /*