$OpenBSD: patch-boost_archive_iterators_remove_whitespace_hpp,v 1.3 2013/03/08 01:21:37 brad Exp $
--- boost/archive/iterators/remove_whitespace.hpp.orig	Wed Oct 10 15:21:03 2012
+++ boost/archive/iterators/remove_whitespace.hpp	Wed Oct 10 15:21:31 2012
@@ -18,6 +18,7 @@
 
 #include <boost/assert.hpp>
 
+#include <cwctype>
 #include <boost/config.hpp> // for BOOST_DEDUCED_TYPENAME
 
 #include <boost/serialization/pfto.hpp>
