CGAL users discussion list

[Mahmood Naderan <>]

Hi,

I have found that this piece of my code runs without error in VC7.0 but not in VC8.0!!

    // As the polygon is convex, the dilated arcs we have computed should
    // intersect and form a hole that whose boundary is the deflated polygon.
    // We therefore construct an arrangement of the dilated arcs.
    Arrangement_2       arr;
     
    insert_curves (arr, arcs.begin(), arcs.end());

    // Collect all arcs along the boundary of the hole in the unbounded face.
    typename Arrangement_2::Face_const_handle    uf = arr.unbounded_face();
    typename Arrangement_2::Hole_const_iterator  holes_it = uf->holes_begin();
    typename Arrangement_2::Ccb_halfedge_const_circulator
                                                 ccb_uf = *holes_it;

    while (ccb_uf->twin()->face() == uf)
    {
      ++ccb_uf;
      CGAL_assertion (ccb_uf != *holes_it);
    }

It is strange, because no matter how arr is formed, there is no CGAL_assertion in VC7.0 and the loop
runs only once, but when I run it in VC8.0, the first round of loop is done witout problem but as the loop enters for second round (which must not) CGAL_assertion generates an error. Why loop runs twice in VC8.0??!!

 

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Mahmood Naderan

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