Mailing-List:	contact cygwin-developers-help AT sourceware DOT cygnus DOT com; run by ezmlm
List-Subscribe:	<mailto:cygwin-developers-subscribe AT sources DOT redhat DOT com>
List-Archive:	<http://sources.redhat.com/ml/cygwin-developers/>
List-Post:	<mailto:cygwin-developers AT sources DOT redhat DOT com>
List-Help:	<mailto:cygwin-developers-help AT sources DOT redhat DOT com>, <http://sources.redhat.com/ml/#faqs>
Sender:	cygwin-developers-owner AT sources DOT redhat DOT com
Delivered-To:	mailing list cygwin-developers AT sources DOT redhat DOT com
Message-ID:	<02ea01c15b5f$7e673bc0$0200a8c0@lifelesswks>
From:	"Robert Collins" <robert DOT collins AT itdomain DOT com DOT au>
To:	<cygwin-developers AT cygwin DOT com>
References:	<3BD4635D DOT 1060208 AT ece DOT gatech DOT edu> <20011022142729 DOT A10309 AT redhat DOT com> <20011022192430 DOT 3581 DOT qmail AT lizard DOT curl DOT com> <20011022193036 DOT 3609 DOT qmail AT lizard DOT curl DOT com> <20011022203136 DOT 5144 DOT qmail AT lizard DOT curl DOT com> <20011022203747 DOT 5162 DOT qmail AT lizard DOT curl DOT com> <02a201c15b5b$7910a4d0$0200a8c0 AT lifelesswks> <20011022204740 DOT B18754 AT redhat DOT com> <20011023005236 DOT 7136 DOT qmail AT lizard DOT curl DOT com> <20011022205828 DOT C18754 AT redhat DOT com>
Subject:	Re: 1.3.4 status?
Date:	Tue, 23 Oct 2001 11:10:23 +1000
MIME-Version:	1.0
X-Priority:	3
X-MSMail-Priority:	Normal
X-Mailer:	Microsoft Outlook Express 5.50.4133.2400
X-MimeOLE:	Produced By Microsoft MimeOLE V5.50.4133.2400
X-OriginalArrivalTime:	23 Oct 2001 01:15:05.0396 (UTC) FILETIME=[25E6DF40:01C15B60]

----- Original Message -----
From: "Christopher Faylor" <cgf AT redhat DOT com>
To: <cygwin-developers AT cygwin DOT com>
Sent: Tuesday, October 23, 2001 10:58 AM
Subject: Re: 1.3.4 status?


> On Mon, Oct 22, 2001 at 08:52:36PM -0400, Jonathan Kamens wrote:
> >>  Date: Mon, 22 Oct 2001 20:47:40 -0400
> >>  From: Christopher Faylor <cgf AT redhat DOT com>
> >>
> >>  It's not a malloc issue.  gcc's -O3 optimization is screwing up
regparm
> >>  parameter passing, specifically in fhandler_console::read which
seems to
> >>  need to call alloca for some reason, although I can't say exactly
why.
> >
> >Now here's someone with slightly more knowledge of x86 assembler code
> >than I have :-).
> >
> >Seriously, I assume this means that I should (a) stop trying to track
> >down this bug since you've figured it out, and (b) stop trying to
> >compile Cygwin with -O3.
>
> I'd say tentatively yes to the former and definitely yes to the
latter.
> If you can figure out how to rearrange the code in
fhandler_console::read
> to avoid the problem, though, that would be useful.

Can you mail me the disas for the fhandler_read (with the source line
tags) ? I don't have time today to build a new dll, but I can have a
quick squint...

Also, what about 2.95.4 ?

Rob

- Raw text -