> file offsets are 64 bits.  how do you specify that (using an integral
> type) in ANSI C, without forcing 'long' to be 64 bits on 32-bit
> machines?

Ah, OK, since that's the 64-bit question (:-), I agree with those who've
said that __quad__ or something similar is called for.  Defining a type
longer than long requires an extension to ANSI C, so you have the choice
of having that extension be syntactically legal (ANSI's preferred method)
or a syntax error (the GNU way).