[Boost-users] BGL: add_vertex deletes properties

From: Fred Labrosse (ffl_at_[hidden])
Date: 2006-04-20 10:24:02

All,

I have:

   typedef boost::adjacency_list<boost::listS, boost::listS,
      boost::undirectedS, place, link> mapType;

   place* newPlace = new place("here-and-there");
   mapType::vertex_descriptor newPlaceDesc = add_vertex(*newPlace, theMap);

where the destructor of place is:

   place::~place()
   {
      // Just to make sure...
      std::cout << "Deleting place " << name << std::endl;
      // ...
   }

When I run that, I do get:

Deleting place here-and-there

just after adding the vertex.  In other words, a property is being deleted, 
probably a copy of the one I gave. I even tried (to make it explicitly like 
the documentation says):

   mapType::vertex_descriptor newPlaceDesc =
      add_vertex(static_cast<const place&>(*newPlace), theMap);

and the same happens.

Is that suppose to happen?

Cheers,

Fred