fopen + mmap

[Ulrich Drepper]

Roland McGrath <roland@frob.com> writes:

> I don't have ANSI C on hand, but my recollection is pretty clear that
> fflush is specifically defined for input streams (to discard buffered
> input).

C89 never said this and neither does C99.  I have both standards here.

> POSIX.1-1996 section 8.2.3 (p 213 in the ISO printing) specifically
> mentions using fflush on input streams to synchronize the file
> position.

This text is still present but it is clearly an error.  Unix/POSIX
directly refer to ISO C for the definition of fflush() and therefore
the function isn't defined for input streams.  You participated in
writing a standard, you know how these things can slip in.  The
OpenGroup is soon starting to collect defect reports for TR1 of XPG6.
This is something which should be reported and fixed.

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