From cae3bab2fe5d08315ea8512dfcbb9f4981730a75 Mon Sep 17 00:00:00 2001
From: Samuel Debionne <samuel.debionne@ujf-grenoble.fr>
Date: Fri, 27 Feb 2015 17:03:03 +0100
Subject: [PATCH] [util][range] Fix back()

*(--boost::end(rng)); is not valid for range with pointer as iterators.
since the range is supposed to be BidirectionalRange, use rbegin
instead.
---
 include/boost/geometry/util/range.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/boost/geometry/util/range.hpp b/include/boost/geometry/util/range.hpp
index 177fca92c..89d981619 100644
--- a/include/boost/geometry/util/range.hpp
+++ b/include/boost/geometry/util/range.hpp
@@ -138,7 +138,7 @@ back(BidirectionalRange const& rng)
 {
     BOOST_RANGE_CONCEPT_ASSERT(( boost::BidirectionalRangeConcept<BidirectionalRange const> ));
     BOOST_ASSERT(!boost::empty(rng));
-    return *(--boost::end(rng));
+    return *(boost::rbegin(rng));
 }
 
 /*!
@@ -151,7 +151,7 @@ back(BidirectionalRange & rng)
 {
     BOOST_RANGE_CONCEPT_ASSERT(( boost::BidirectionalRangeConcept<BidirectionalRange> ));
     BOOST_ASSERT(!boost::empty(rng));
-    return *(--boost::end(rng));
+    return *(boost::rbegin(rng));
 }