[graph] compile error directed_graph/undirected_graph

[Akira Takahashi <faithandbrave@…>]

follow code is compile error:

#include <boost/graph/directed_graph.hpp>
#include <boost/graph/undirected_graph.hpp>

using namespace boost;

int main()
{
    directed_graph<> dg(5);
    graph_traits<directed_graph<> >::vertex_descriptor
        dv = vertex(3, dg); // error!

    undirected_graph<> ug(5);
    graph_traits<undirected_graph<> >::vertex_descriptor
        uv = vertex(3, ug); // error!

    return 0;
}

patch is here:

--- directed_graph.hpp
+++ directed_graph.hpp (bug fixed)
@@ -410,7 +410,7 @@
 typename DIRECTED_GRAPH::vertex_descriptor
 vertex(typename DIRECTED_GRAPH::vertices_size_type n,
        DIRECTED_GRAPH const& g)
-{ return vertex(g.impl()); }
+{ return vertex(n, g.impl()); }

--- undirected_graph.hpp
+++ undirected_graph.hpp (bug fixed)
@@ -413,7 +413,7 @@
 typename UNDIRECTED_GRAPH::vertex_descriptor
 vertex(typename UNDIRECTED_GRAPH::vertices_size_type n,
        UNDIRECTED_GRAPH const& g)
-{ return vertex(g.impl()); }
+{ return vertex(n, g.impl()); }

[Jeremiah Willcock]

(In [76394]) Applied patch from #6371; fixes #6371