id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
4642,Including some BGL header files and boost/range/irange.hpp causes compile errors due to the name conflict,Naoki Yoshioka <yoshioka.naoki@…>,Andrew Sutton,"Some BGL headers like boost/graph/detail/adjacency_list.hpp include boost/pending/integer_range.hpp and use a class template boost::integer_range to represent a vertex/edge list.
Since 1.44.0, however, Boost.Range supports a class template which has the same name and probably the same role in boost/range/irange.hpp; it didn't have integer_range and instead used boost::iterator_range<boost::range_detail::integer_iterator<Integer> > in 1.43.0.
Therefore the following simple code causes compile errors using 1.44.0.

{{{
// test.cpp
#include <boost/graph/adjacency_list.hpp>
#include <boost/range/irange.hpp>

int main() { return 0; }
}}}

The errors are as follows;

{{{
$ g++ --version
g++ (Ubuntu 4.4.3-4ubuntu5) 4.4.3
Copyright (C) 2009 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

$ g++ test.cpp -I/usr/local/include/boost_1_44_0
In file included from test.cpp:2:
/usr/local/include/boost_1_44_0/boost/range/irange.hpp:176: error: redefinition of ‘class boost::integer_range<IntegerType>’
/usr/local/include/boost_1_44_0/boost/pending/integer_range.hpp:23: error: previous definition of ‘class boost::integer_range<IntegerType>’
$ g++ test.cpp -I/usr/local/include/boost_1_43_0
$ 
}}}

Note that /usr/local/include/boost_1_xx_x is the directory the boost 1.xx.x is installed.

To fix this problem, I think it's OK just to replace the including file from boost/pending/integer_range.hpp to boost/range/irange.hpp in BGL.
The header files which include boost/pending/integer_range.hpp are as follows;

* boost/graph/adjacency_matrix.hpp
* boost/graph/detail/adjacency_list.hpp
* boost/graph/edge_list.hpp
* boost/graph/vector_as_graph.hpp

Note that I haven't checked whether this modification works completely well or not.
I've just checked the above example code works after this modification.

After this modification, I think boost/pending/integer_range.hpp can be removed from the boost library because no other files include this pending header file.",Bugs,closed,To Be Determined,graph,Boost 1.44.0,Problem,fixed,,Jeremiah Willcock Neil Groves Dave Abrahams jsiek