diff -r e1b950c65cb4 -r 837f303aceeb epoc32/include/stdapis/boost/mpl/aux_/arity.hpp
--- a/epoc32/include/stdapis/boost/mpl/aux_/arity.hpp	Wed Mar 31 12:27:01 2010 +0100
+++ b/epoc32/include/stdapis/boost/mpl/aux_/arity.hpp	Wed Mar 31 12:33:34 2010 +0100
@@ -1,8 +1,8 @@
 
-#ifndef BOOST_MPL_LIMITS_ARITY_HPP_INCLUDED
-#define BOOST_MPL_LIMITS_ARITY_HPP_INCLUDED
+#ifndef BOOST_MPL_AUX_ARITY_HPP_INCLUDED
+#define BOOST_MPL_AUX_ARITY_HPP_INCLUDED
 
-// Copyright Aleksey Gurtovoy 2000-2004
+// Copyright Aleksey Gurtovoy 2001-2004
 //
 // Distributed under the Boost Software License, Version 1.0. 
 // (See accompanying file LICENSE_1_0.txt or copy at 
@@ -10,12 +10,30 @@
 //
 // See http://www.boost.org/libs/mpl for documentation.
 
-// $Source: /cvsroot/boost/boost/boost/mpl/limits/arity.hpp,v $
-// $Date: 2004/09/02 15:40:57 $
-// $Revision: 1.4 $
+// $Source: /cvsroot/boost/boost/boost/mpl/aux_/arity.hpp,v $
+// $Date: 2004/09/02 15:40:43 $
+// $Revision: 1.6 $
 
-#if !defined(BOOST_MPL_LIMIT_METAFUNCTION_ARITY)
-#   define BOOST_MPL_LIMIT_METAFUNCTION_ARITY 5
-#endif
+#include <boost/mpl/aux_/config/dtp.hpp>
 
-#endif // BOOST_MPL_LIMITS_ARITY_HPP_INCLUDED
+#if defined(BOOST_MPL_CFG_BROKEN_DEFAULT_PARAMETERS_IN_NESTED_TEMPLATES)
+
+#   include <boost/mpl/aux_/nttp_decl.hpp>
+#   include <boost/mpl/aux_/config/static_constant.hpp>
+
+namespace boost { namespace mpl { namespace aux {
+
+// agurt, 15/mar/02: it's possible to implement the template so that it will 
+// "just work" and do not require any specialization, but not on the compilers
+// that require the arity workaround in the first place
+template< typename F, BOOST_MPL_AUX_NTTP_DECL(int, N) >
+struct arity
+{
+    BOOST_STATIC_CONSTANT(int, value = N);
+};
+
+}}}
+
+#endif // BOOST_MPL_CFG_BROKEN_DEFAULT_PARAMETERS_IN_NESTED_TEMPLATES
+
+#endif // BOOST_MPL_AUX_ARITY_HPP_INCLUDED