>This is a gross abuse of the interface.  There is no guarantee that any
>particular stdio implementation even _has_ structure elements allowing
>the equivalent of the above, and indeed, ideally the FILE type would be
>completely opaque to client code.
>[...]

I hope everyone here appreciates the irony that der Mouse just finished
berating everyone for attacking someone who wanted to use RIP from home
rather than answering his question, but then proceeded to to the same
to someone who wants to access the internals of stdio :-)

--Ken