Re: standards/41992 (fgets returns non-NULL for a buffer size of 1 on an empty file)

[David Laight <david%l8s.co.uk@localhost>]

The following reply was made to PR standards/41992; it has been noted by GNATS.

From: David Laight <david%l8s.co.uk@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: standards/41992 (fgets returns non-NULL for a buffer size of 1 on 
an empty file)
Date: Mon, 12 Oct 2009 22:39:38 +0100

 On Fri, Sep 04, 2009 at 11:35:05PM +0000, joerg%NetBSD.org@localhost wrote:
 > The behavior required by POSIX is questionable for the case of empty
 > buffer.  Implementing the requirement for size=1 would require reading
 > from the stream, even though no input will be consumed. This can have
 > undesirable effects e.g. for pipes.
 
 I'm not sure that reading from the stream (into the stdio buffer)
 can be a problem.
 Programs using stdio cannot control the offset of the underlying file.
 
        David
 
 -- 
 David Laight: david%l8s.co.uk@localhost