Boost logo

Boost :

From: Guillaume Melquiond (guillaume.melquiond_at_[hidden])
Date: 2004-07-17 11:05:31

Le sam 17/07/2004 à 17:19, Doug Gregor a écrit :
> On Jul 17, 2004, at 4:15 AM, Guillaume Melquiond wrote:
> > Hi,
> >
> > Line 189 of subgraph.hpp is:
> >
> > return std::make_pair((*i).second, i != m_local_vertex.end());
> >
> > Consequently iterator i is dereferenced even when it is equal to
> > m_local_vertex.end(). So here comes a patch. When *i is not valid, the
> > patch simply returns u_global (the closest vertex_descriptor available
> > to the code), another value may make better sense (but since the value
> > is not supposed to be used).
> You could use graph_traits<Graph>::null_vertex() to get a real "null"
> vertex. Thanks for the patches! I'm hitting the road right now, but
> I'll get to them tomorrow night if nobody gets there first.

I replaced u_global by null_vertex() and committed the first patch. I
also committed the second patch. However, the second one may require a
bit of review: the problem was obvious, but I'm not sure my solution
does what should be done (even if the subgraph.cpp test program is



Boost list run by bdawes at, gregod at, cpdaniel at, john at