CGAL users discussion list

Hi,

I am looking for an example on how to use incident_facets to traverse the
incident facets of an edge.
I have done this (I don't eally remember where I saw it) but it seems to
enter an infinite loop :
===============================
Facet_circulator fc;
Facet_circulator done(fc);
fc = D.incident_facets(m_edge);
do{
  if (!D.is_infinite(*fc)){
    //do something
  };
}while (++fc != done);
===============================
thanks in advance.