on Wed Nov 12 2008, "Sandeep Gupta" <gupta.sandeep-AT-gmail.com> wrote:
Hi Dave, Thanks so much for looking into. Attached below is the error report trimmed to what i felt is relevant. Let me the full trace is required.
Thanks sandeep
/boost/concept_check.hpp: In destructor 'boost::SignedInteger<T>::~SignedInteger()
/boost/concept/detail/general.hpp:30: instantiated from 'static void boost::concept::requirement<Model>::failed()
/boost/concept_check.hpp:458: instantiated from 'boost::InputIterator<TT>::~InputIterator()
/boost/concept/detail/general.hpp:29: instantiated from 'static void boost::concept::requirement<Model>::failed()
/boost/graph/graph_concepts.hpp:47: instantiated from 'boost::concepts::MultiPassInputIterator<T>::~MultiPassInputIterator()
/boost/concept/detail/general.hpp:29: instantiated from 'static void boost::concept::requirement<Model>::failed()
/boost/graph/graph_concepts.hpp:81: instantiated from 'boost::concepts::IncidenceGraph<G>::~IncidenceGraph()
/boost/graph/graph_concepts.hpp:70: instantiated from 'static void boost::concept::requirement<Model>::failed()
/boost/concept_check.hpp:43: instantiated from 'void boost::function_requires(Model*)
/boost/graph/breadth_first_search.hpp:55: instantiated from 'void boost::breadth_first_visit(const IncidenceGraph&, typename boost::graph_traits<G>::vertex_descriptor, Buffer&, BFSVisitor, ColorMap)
This says that: * The graph wrapper fails to model IncidenceGraph * Because its out_edge_iterator fails to model MultipassInputIterator * Because its out_edge_iterator fails to model InputIterator, of which MultipassInputIterator is a refinement * Because the out_edge_iterator's difference_type fails to model SignedInteger. So there's your problem: the out_edge_iterator's difference_type is not turning out to be a signed integer. That shouldn't be too hard to fix. This is actually pretty easy to work out from looking at the errors and the lines in the source. I recommend you try it. Concept checking rocks! -- Dave Abrahams BoostPro Computing http://www.boostpro.com