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Re: [PATCH] broken dd on systems without __fpending

From: Paul Eggert
Subject: Re: [PATCH] broken dd on systems without __fpending
Date: Sat, 06 Jan 2007 18:41:51 -0800
User-agent: Gnus/5.1008 (Gnus v5.10.8) Emacs/21.4 (gnu/linux)

Mikulas Patocka <address@hidden> writes:

> The correct fix would be to add __fpending to the libc

Yes, that sounds like a good idea, since everyone else who's done that
sort of thing has added <stdio_ext.h>.  I think Solaris did it first,
quite some time ago; see

> --- are there any programs that require it or is it just a performance
> optimization?

coreutils requires either __fpending or some way to get the info out
of the FILE datatype.  I think it's more to make it convenient to use
stdio correctly (checking for I/O failures) than for optimization.
This is part of gnulib, so other gnulib-using programs might require
it (I don't know).

Other applications (Emacs, Ruby, etc.) are like coreutils (though they
don't use gnulib here).  I think this is more for functionality.

LSB requires __fpending, not that that matters for FreeBSD.

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