Index: tracking.hpp
===================================================================
RCS file: /cvsroot/boost/boost/boost/serialization/tracking.hpp,v
retrieving revision 1.7
diff -u -r1.7 tracking.hpp
--- tracking.hpp	21 Jul 2005 18:18:46 -0000	1.7
+++ tracking.hpp	4 Aug 2005 11:49:03 -0000
@@ -26,6 +26,7 @@
 #include <boost/mpl/integral_c_tag.hpp>
 
 #include <boost/type_traits/is_base_and_derived.hpp>
+#include <boost/type_traits/is_pointer.hpp>
 #include <boost/serialization/traits.hpp>
 #include <boost/serialization/level.hpp>
 #include <boost/serialization/tracking_enum.hpp>