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Re: GCC headers and DJGPP port
> > It doesn't. It shouldn't have to. ANSI says that stdio.h provides
> > NULL.
>
> so it is not all that clear that it is provided by stdio.h
> exclusively.
I didn't say exclusively. I said stdio.h provides it. Headers that
expect stdio.h to *relinquish* its provision of NULL are broken. The
other djgpp headers that also provide NULL cooperate so that none of
them have to relinquish their provisions to the others.
> Please tell me how you implement the above requirement without testing
> whether NULL has been defined?
They all define it to exactly the same thing: 0