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Date:	Mon, 13 Jan 2014 18:19:29 +0100
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: nested popen()'s lead to fgets() failure on 64-bit only
Message-ID:	<20140113171929.GA2380@calimero.vinschen.de>
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On Jan 13 11:38, David Levine wrote:
> Corinna wrote:
>=20
> > Not really.  I have no idea why this fails for you.  Does an strace
> > show anything suspicious?
>=20
> Yes, there's an exception, it looks like in WFMO.  It's
> happens when closing handles after forking sh.exe for the
> second popen().  strace excerpt is below.
>=20
> The exception didn't happen after the first popen().  And I
> tried running with a minimal environment (env -i PATH=3D/usr/bin),
> which didn't help.
>=20
> David
>=20
>=20
>     1       1 [main] sh (426948) ****************************************=
******
                          ^^^^^^^^
Your PID values are pretty suspicious.  Even on a busy machine they
should seldomly have more than 4 digits, let alone 6.  The PIDs are only
getting high if process and other handles are hold and not closed by
another process.  This looks a lot like a BLODA problem.  Did you
check against http://cygwin.com/faq/faq.html#faq.using.bloda?


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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