[boost] graph/subgraph: end iterator dereferenced

From: Guillaume Melquiond (guillaume.melquiond_at_[hidden])
Date: 2004-07-17 04:15:13

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).

Regards,

Guillaume