From 344f5789348789c0ca98c8d7b6e560bad6d4822f Mon Sep 17 00:00:00 2001
From: Neil Groves <neilgroves@gmail.com>
Date: Sat, 7 Jun 2014 17:19:35 +0100
Subject: [PATCH] trac_10098 iterator_range sign warning.

---
 include/boost/range/iterator_range_core.hpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/boost/range/iterator_range_core.hpp b/include/boost/range/iterator_range_core.hpp
index cefabd4..3464a78 100644
--- a/include/boost/range/iterator_range_core.hpp
+++ b/include/boost/range/iterator_range_core.hpp
@@ -336,7 +336,8 @@ protected:
 public:
     reference operator[](difference_type at) const
     {
-        BOOST_ASSERT(at >= 0 && at < size());
+        BOOST_ASSERT(at >= 0);
+        BOOST_ASSERT(static_cast<typename base_type::size_type>(at) < size());
         return this->m_Begin[at];
     }
 
@@ -347,7 +348,8 @@ public:
     //
     abstract_value_type operator()(difference_type at) const
     {
-        BOOST_ASSERT(at >= 0 && at < size());
+        BOOST_ASSERT(at >= 0);
+        BOOST_ASSERT(static_cast<typename base_type::size_type>(at) < size());
         return this->m_Begin[at];
     }