From 78a01b30bc7659596262f2401a07f83b12d58b95 Mon Sep 17 00:00:00 2001
From: Thomas Witt <witt@acm.org>
Date: Tue, 28 Jan 2003 07:59:40 +0000
Subject: [PATCH] Added input_iterator support to filter_iterator.

[SVN r882]
---
 include/boost/iterator/iterator_adaptors.hpp | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/include/boost/iterator/iterator_adaptors.hpp b/include/boost/iterator/iterator_adaptors.hpp
index ab89f80..0aaa809 100644
--- a/include/boost/iterator/iterator_adaptors.hpp
+++ b/include/boost/iterator/iterator_adaptors.hpp
@@ -1012,14 +1012,10 @@ namespace boost
     struct filter_iterator_traits
       : iterator_traits<Iterator>
     {
-#if !BOOST_WORKAROUND(BOOST_MSVC,  BOOST_TESTED_AT(1300))                      
-      BOOST_STATIC_ASSERT((detail::is_forward_traversal_iterator< 
-                           typename traversal_category<Iterator>::type >::value));
-#endif
-
       typedef iterator_tag<
         typename return_category<Iterator>::type
-        , forward_traversal_tag
+        , minimum_category< forward_traversal_tag
+                            ,typename traversal_category<Iterator>::type >::type 
         > iterator_category;
     };