CGAL users discussion list

[Stephen Wong <>]

Hi there,

On this seemingly innocent input solid in the form of a OFF file, CGAL's 
Nef_polyhedron_3 constructor using Polyhedron_3 crashes.  I believe that the 
solid represented by the OFF file is valid based on the specification (you 
can see the model in geomview or any other OFF viewer).  I caused this crash 
by modifying the Nef_3.sln's interface_polyhedron:

Polyhedron P ;
std::ifstream fin( "Triangle - Copy.off" ) ;
fin >> P ;
if ( P.is_closed() && P.is_valid() )
{
  Nef_polyhedron_3 N1( poly ) ;
}

Thanks,

Stephen

Attachment: Triangle - Copy.off
Description: Triangle - Copy.off