Date: Wed, 28 Jul 1999 20:13:18 +0200 (SAST) From: Robert Nordier <rnordier@nordier.com> To: sheldonh@uunet.co.za (Sheldon Hearn) Cc: hackers@FreeBSD.ORG Subject: Re: bin/12852: Non-standard behavior of fread(3) Message-ID: <199907281813.UAA17849@m2-2-dbn.dial-up.net> In-Reply-To: <38333.933180786@axl.noc.iafrica.com> from Sheldon Hearn at "Jul 28, 1999 06:53:06 pm"
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Sheldon Hearn wrote:
> Could someone have a look at the patch proposed on PR 12852? I
> understand the motivation, since it seems reasonable to me that ferror()
> should return EBADF after an attempt to read from stdout. At the moment,
> ferror() returns 0 after an attempt to read from stdout.
There's no question this needs changing. An ISO example actually
reads along the lines of:
while (!feof(fp) && !ferror(fp))
fscanf(fp, ...);
with no further provision for error-detection. Applied to stdout,
this never terminates.
The SVID wording is more definite than ISO in discussing this ("less
than nitems only if a read error or end-of-file is encountered"),
but mostly the present behavior just conflicts with sense and
practice.
--
Robert Nordier
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