From e0147657977f5693a3af72f031ac84b4a3144d39 Mon Sep 17 00:00:00 2001
From: Dave Abrahams <dave@boostpro.com>
Date: Sun, 24 Feb 2002 20:18:46 +0000
Subject: [PATCH] More use of ice_xxx for old EDG compilers

[SVN r12929]
---
 include/boost/python/detail/indirect_traits.hpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/boost/python/detail/indirect_traits.hpp b/include/boost/python/detail/indirect_traits.hpp
index 8c096a2f..f925eaee 100644
--- a/include/boost/python/detail/indirect_traits.hpp
+++ b/include/boost/python/detail/indirect_traits.hpp
@@ -31,7 +31,8 @@ struct is_reference_to_non_const
         bool, value = (
             ::boost::type_traits::ice_and<
             ::boost::is_reference<T>::value
-            , !::boost::python::detail::is_reference_to_const<T>::value
+            , ::boost::type_traits::ice_not<
+                ::boost::python::detail::is_reference_to_const<T>::value>::value
             >::value)
         );
 };