Re: [Boost-users] [Graph]remove_edge

Subject: Re: [Boost-users] [Graph]remove_edge
From: Andrew Sutton (andrew.n.sutton_at_[hidden])
Date: 2008-11-29 07:26:43

> using the graph concepts for a case where I frequently add or remove
> edges I came across an inconsistency:
> removing an edge may invalidate the edge counter because it does not
> check whether the edge existed or not. This is the code from the header
> file boost/graph/adjacency_matrix.hpp:
>
> template <typename D, typename VP, typename EP, typename GP, typename A>
>  void
>  remove_edge(typename adjacency_matrix<D,VP,EP,GP,A>::vertex_descriptor
> u,
>              typename adjacency_matrix<D,VP,EP,GP,A>::vertex_descriptor
> v,
>              adjacency_matrix<D,VP,EP,GP,A>& g)
> {
>    --(g.m_num_edges);
>    detail::set_edge_exists(g.get_edge(u,v), false, 0);
> }
>

That definitely looks like a problem. Can I get you to file a ticket for it
on svn.boost.org? I can address the issue on monday.

Andrew Sutton
andrew.n.sutton_at_[hidden]