Hi, this happens if you cast to an unrelated class. Could you at least give a warning. Cheers, André -- Summary: dynamic_cast compiles where static_cast fails Product: gcc Version: 4.1.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: Woebbeking at web dot de http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32282