X-Recipient:	archive-cygwin AT delorie DOT com
X-Spam-Check-By:	sourceware.org
Date:	Wed, 30 May 2012 16:38:45 +0200
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: 20120523: bug in fork/exec
Message-ID:	<20120530143845.GA9375@calimero.vinschen.de>
Reply-To:	cygwin AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
References:	<4FBF4233 DOT 8040303 AT users DOT sourceforge DOT net> <20120525094033 DOT GD4225 AT calimero DOT vinschen DOT de> <4FBFE720 DOT 9050502 AT users DOT sourceforge DOT net> <20120529094050 DOT GC12040 AT calimero DOT vinschen DOT de>
MIME-Version:	1.0
In-Reply-To:	<20120529094050.GC12040@calimero.vinschen.de>
User-Agent:	Mutt/1.5.21 (2010-09-15)
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Unsubscribe:	<mailto:cygwin-unsubscribe-archive-cygwin=delorie DOT com AT cygwin DOT com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com

On May 29 11:40, Corinna Vinschen wrote:
> On May 25 15:10, Yaakov (Cygwin/X) wrote:
> > On 2012-05-25 04:40, Corinna Vinschen wrote:
> > >On May 25 03:26, Yaakov (Cygwin/X) wrote:
> > >>With the 20120523 snapshot, if a process attempts to fork/exec
> > >
> > >Which snapshot shows this effect first?
> > 
> > Ouch, it starts with 20120309.
> 
> Thanks.  That would mean a single change is the culprit, but I need
> a way to reproduce the problem to be able to fix it (other than just
> reverting the patch).
> 
> > FWIW, here is the fork() code I discovered this with:
> > 
> > http://git.gnome.org/browse/glib/tree/glib/gspawn.c?id=2.32.3
> 
> That's a bit heavy as far as testcases go.  Thing is, I can't reproduce
> it.  If that's a generic problem, shouldn't this also occur when trying
> to start a program from bash or tcsh?  I deliberately removed a DLL from
> my system, but there is no hang at all when trying to start an affected
> application.
> 
> Can you please provide a simple testcase?  If you can reproduce it with
> given binaries from the distro, I don't need source code, just the steps
> and the names of the binaries to reproduce.

Never mind.  I found the problem and just checked in a patch.  I'll
create a new snapshot shortly.  Please test.


Thanks,
Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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

- Raw text -