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From: Ken Raeburn <raeburn@cygnus.com>
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Subject: Re: gnus loops if nntp server connection closes without sending output
Date: 08 Mar 1998 01:20:30 -0500
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Lars Magne Ingebrigtsen <larsi@gnus.org> writes:

> > The loop in nntp-wait-for does not appear to handle a closed
> > connection, where no amount of waiting will produce output from the
> > closed pipe.
> 
> Hm.  It should check the status of the process and see whether it is
> still alive.  Fix in Quassia Gnus v0.35.  At least I think so.  Could
> you check after it's been released?

Tried it (in 0.37), but the problem is still there.  The loop here:

    (while (or (not (memq (char-after (point)) '(?2 ?3 ?4 ?5)))
	       (looking-at "480"))
      (when (looking-at "480")
	(nntp-handle-authinfo process))
      (nntp-accept-process-output process)
      (goto-char (point-min)))

is being run on an empty buffer, so char-after returns nil, and the
loop never finishes.  It doesn't get as far as the process-status
check.