--- a/hotspot/src/share/vm/runtime/virtualspace.hpp	Fri Sep 13 22:23:48 2013 +0200
+++ b/hotspot/src/share/vm/runtime/virtualspace.hpp	Fri Sep 13 22:25:27 2013 +0200
@@ -203,7 +203,8 @@
   void check_for_contiguity() PRODUCT_RETURN;
 
   // Debugging
-  void print() PRODUCT_RETURN;
+  void print_on(outputStream* out) PRODUCT_RETURN;
+  void print();
 };
 
 #endif // SHARE_VM_RUNTIME_VIRTUALSPACE_HPP