[Boost-users] [Graph] undefined trait functions

Subject: [Boost-users] [Graph] undefined trait functions
From: Miklós Tóth (spiralfuzet_at_[hidden])
Date: 2013-05-03 02:50:46

Hi!

I've a problem, with Boost Graph Library and gcc 4.7.
I have a legacy graph representation that i like to wrap with a graph
adaptor to access boost graph algorythms.

1: I've created a graph adaptor, that contains my legacy graph. This is a
simple struct:

struct legacy_graph_adaptor {
    legacy_graph_adaptor(const legacy_graph& g)
        : graph(const_cast<legacy_graph&
>(g)) { }
    legacy_graph& graph;
};

2: Next step was a vertex_iterator and an edge_itreator, where I redefined
the equal, dereference, increment, etc members. (If it's not necessary i'm
not going to copy the code here.)

3: Created traits for adapted graph. I've redefined source, target,
out_edge, etc.
template <>

struct graph_traits<legacy_graph_adaptor> : public detail::traits_base {
    struct out_edge_iterator :
        public detail::traits_base::edge_iter_base<out_edge_iterator>
    {
        typedef detail::traits_base::edge_iter_base<out_edge_iterator> Base;

        out_edge_iterator(int legacy_vertex = 0, int* base_to = 0,
            const legacy_graph* g = 0) : Base(legacy_vertex, base_to, g) { }
    private:
        void increment() {
            advance();
        }
        friend class iterator_core_access;
    };
};

Originally it was created as a part of a msvc project. Now I try to port it
to gcc, and i got the next message (for example):

    <path_to>\boost\boost_1_53_0\boost\graph\graph_concepts.hpp:94: error:
'out_edges' was not declared in this scope, and no declarations were found
by argument-dependent lookup at the point of instantiation [-fpermissive]

When I change to gcc 4.6 it compiles well.
So my question is: Is this a known bug or I missing something?
Thanks for the help.

Best regards:
Miklos