diff -r c920f9328716 -r 25b995bc75a0 jitcraft/Zone.h
--- a/jitcraft/Zone.h	Tue Jul 03 08:30:09 2012 -0700
+++ b/jitcraft/Zone.h	Tue Jul 03 09:25:18 2012 -0700
@@ -25,6 +25,7 @@
 #include "Barriers.h"
 #include "Handles.h"
 #include "RootScopes.h"
+#include "VirtualObjectVisitor.h"
 
 namespace jc {
 
@@ -80,6 +81,8 @@
     RootScopeManager &rootScopes() {
         return rootScopes_;
     }
+
+    void accept(VirtualObjectVisitor *visitor);
 };
 
 // In a multi-threaded system, this would be a TLS variable.