From cafea6aea537eb7fa9fa9994ddcf987285c6e7dc Mon Sep 17 00:00:00 2001
From: Neil Groves <neil@grovescomputing.com>
Date: Sun, 16 Jan 2011 17:07:27 +0000
Subject: [PATCH] [boost][range] - Merge a fix to undo an erroneous change to
 iterator_range.size() that allowed it to compile for ranges that did not
 model the Random Access Range Concept and thereby broken the complexity
 guarantees.

[SVN r68190]
---
 include/boost/range/iterator_range_core.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/boost/range/iterator_range_core.hpp b/include/boost/range/iterator_range_core.hpp
index 7664c2e..7ef7523 100755
--- a/include/boost/range/iterator_range_core.hpp
+++ b/include/boost/range/iterator_range_core.hpp
@@ -231,7 +231,7 @@ namespace boost
 
             difference_type size() const
             {
-                return std::distance(m_Begin, m_End);
+				return m_End - m_Begin;
             }
 
             bool empty() const