in any case Ali bhai,kafir will goto hell,Muslim standing in the line of Kuffar will be considered as Kafir so they'll be treated as Kafir :)but Salfi sahab is right :P as m wondering where he'll be
Actually I've heard of traditions that on the day of judgement, many who were known as "kafirs" in this world will be standing in the line of "muslims" and many known "muslims" in this world will be standing in the line "kafirs"...