Corinna Vinschen wrote: > What happens is that this statement >> if ((*object)->magic != magic) >> in the function thread.cc:verifyable_object_isvalid throws an exception > because *object is NULL. This should be covered by the myfault handler > in this function but for some reason it isn't. So, set a "*object == 0" conditional breakpoint on that line and see what the SEH chain looks like? cheers, DaveK -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple