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
Date:	22 Oct 2001 20:52:36 -0400
Message-ID:	<20011023005236.7136.qmail@lizard.curl.com>
From:	Jonathan Kamens <jik AT curl DOT com>
To:	cygwin-developers AT cygwin DOT com
CC:	cygwin-developers AT cygwin DOT com
In-reply-to:	<20011022204740.B18754@redhat.com> (message from Christopher
	Faylor on Mon, 22 Oct 2001 20:47:40 -0400)
Subject:	Re: 1.3.4 status?
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>

>  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.

Thanks,

  jik

- Raw text -