Re: seekable stdin test failure on OS X

[Eric Blake-1]

> Even on Linux, the fflush man page doesn't mention input streams:
> 
>    http://www.die.net/doc/linux/man/man3/fflush.3.html
> 
> So it seems that using fflush(stdin) is probably the wrong thing
> to do altogether for a portable application.

On the contrary, it makes it sound like we write a gnulib module
that implements POSIX semantics of fflush, which creates a
function rpl_fflush that calls fpurge or __fpurge under the hood
when the regular fflush is broken on input streams; then portable
applications can assume POSIX semantics for fflush.

-- 
Eric Blake

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