X-Recipient:	archive-cygwin AT delorie DOT com
DKIM-Filter:	OpenDKIM Filter v2.11.0 sourceware.org 4FC30385842F
DKIM-Signature:	v=1; a=rsa-sha256; c=relaxed/relaxed; d=cygwin.com;
	s=default; t=1636469321;
	bh=cQxFO5mZdAYWhJ3RwbSRQeFCVdVloXDWe7kF/F3moeM=;
	h=To:Subject:References:Date:In-Reply-To:List-Id:List-Unsubscribe:
	List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc:
	From;
	b=Di7zInwOnBDzJCkaUVLbOHBIAhVkCV96bbi0aYFTm0rtfFnD6J3J/hS/fuLVtCJjh
	ypNBQgTRI3dKs1fb8EsxMZ4ZQ/Rp0gUAE2v9U30BdiH7WwQOyglQogl73jA1pSDk9+
	fcrEZ3sieR6LV+bu5yWlSzLaQZtyRw6ZlF2/Vy5E=
X-Original-To:	cygwin AT cygwin DOT com
Delivered-To:	cygwin AT cygwin DOT com
DMARC-Filter:	OpenDMARC Filter v1.4.1 sourceware.org 592193858D39
To:	Ken Brown <kbrown AT cornell DOT edu>
Subject:	Re: Another pipe-related problem?
References:	<f5br1bqaj11 DOT fsf AT ecclerig DOT inf DOT ed DOT ac DOT uk>
	<05c4180e-396b-4af3-ac0c-2ab8125df17e AT cornell DOT edu>
	<f5bk0hh8uox DOT fsf AT ecclerig DOT inf DOT ed DOT ac DOT uk>
	<eb8d7d4f-d1ed-6f30-2ac3-1b24166243d9 AT cornell DOT edu>
Date:	Tue, 09 Nov 2021 14:47:26 +0000
In-Reply-To:	<eb8d7d4f-d1ed-6f30-2ac3-1b24166243d9@cornell.edu> (Ken Brown's
	message of "Tue\, 9 Nov 2021 09\:11\:28 -0500")
Message-ID:	<f5b1r3p8jy9.fsf@ecclerig.inf.ed.ac.uk>
User-Agent:	Gnus/5.101 (Gnus v5.10.10) XEmacs/21.5-b34 (linux)
MIME-Version:	1.0
X-Edinburgh-Scanned:	at loire.is.ed.ac.uk
X-Spam-Status:	No, score=-2.2 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS,
	RCVD_IN_MSPIKE_H2, SPF_HELO_PASS, SPF_PASS,
	TXREP autolearn=ham autolearn_force=no version=3.4.4
X-Spam-Checker-Version:	SpamAssassin 3.4.4 (2020-01-24) on
	server2.sourceware.org
X-BeenThere:	cygwin AT cygwin DOT com
X-Mailman-Version:	2.1.29
List-Id:	General Cygwin discussions and problem reports <cygwin.cygwin.com>
List-Unsubscribe:	<https://cygwin.com/mailman/options/cygwin>,
	<mailto:cygwin-request AT cygwin DOT com?subject=unsubscribe>
List-Archive:	<https://cygwin.com/pipermail/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-request AT cygwin DOT com?subject=help>
List-Subscribe:	<https://cygwin.com/mailman/listinfo/cygwin>,
	<mailto:cygwin-request AT cygwin DOT com?subject=subscribe>
From:	"Henry S. Thompson via Cygwin" <cygwin AT cygwin DOT com>
Reply-To:	"Henry S. Thompson" <ht AT inf DOT ed DOT ac DOT uk>
Cc:	cygwin AT cygwin DOT com
Errors-To:	cygwin-bounces+archive-cygwin=delorie DOT com AT cygwin DOT com
Sender:	"Cygwin" <cygwin-bounces+archive-cygwin=delorie DOT com AT cygwin DOT com>

[private reply -- it's not exactly a private repo, but it's really not
 ready for prime-time with users expecting to be able to raise issues
 etc.]

Ken Brown writes:

> ...
> I was aware that the bitbucket repo didn't exist, because I tried to get the
> sources there.  But I didn't know about the fork.  Please point me to it, or
> just make a tarball available to me somehow.

https://foss.heptapod.net/xemacs

>> ...

> I'll have to reproduce the hang myself in order to test this (or
> maybe you could test it), but I now have a new guess: If the read
> call above keeps failing with EINTR, then we're in an infinite loop.

> This could happen because of the following code in
> fhandler_pipe::raw_read:
>
>   DWORD waitret = cygwait (read_mtx, timeout);
>   switch (waitret)
>     {
>     case WAIT_OBJECT_0:
>       break;
>     case WAIT_TIMEOUT:
>       set_errno (EAGAIN);
>       len = (size_t) -1;
>       return;
>     default:
>       set_errno (EINTR);
>       len = (size_t) -1;
>       return;
>     }
>

Let's wait and see what Takashi says -- I see from github blame that
was introduced between 3.2 and 3.3.0, so certainly _could_ be the
culprit.  I've never tried to build my own Cygwin...

Thanks,

ht
-- 
       Henry S. Thompson, School of Informatics, University of Edinburgh
      10 Crichton Street, Edinburgh EH8 9AB, SCOTLAND -- (44) 131 650-4440
                Fax: (44) 131 650-4587, e-mail: ht AT inf DOT ed DOT ac DOT uk
                       URL: http://www.ltg.ed.ac.uk/~ht/
 [mail from me _always_ has a .sig like this -- mail without it is forged spam]

The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.


-- 
Problem reports:      https://cygwin.com/problems.html
FAQ:                  https://cygwin.com/faq/
Documentation:        https://cygwin.com/docs.html
Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple

- Raw text -