From owner-freebsd-hackers  Sun Jun 15 11:52:30 1997
Return-Path: <owner-hackers>
Received: (from root@localhost)
          by hub.freebsd.org (8.8.5/8.8.5) id LAA20811
          for hackers-outgoing; Sun, 15 Jun 1997 11:52:30 -0700 (PDT)
Received: from phaeton.artisoft.com (phaeton.Artisoft.COM [198.17.250.50])
          by hub.freebsd.org (8.8.5/8.8.5) with SMTP id LAA20804
          for <hackers@FreeBSD.ORG>; Sun, 15 Jun 1997 11:52:28 -0700 (PDT)
Received: (from terry@localhost) by phaeton.artisoft.com (8.6.11/8.6.9) id LAA16670; Sun, 15 Jun 1997 11:41:11 -0700
From: Terry Lambert <terry@lambert.org>
Message-Id: <199706151841.LAA16670@phaeton.artisoft.com>
Subject: Re: C optimizer bug ?
To: babkin@hq.icb.chel.su (Serge A. Babkin)
Date: Sun, 15 Jun 1997 11:41:11 -0700 (MST)
Cc: jkh@time.cdrom.com, hackers@FreeBSD.ORG
In-Reply-To: <199706150207.IAA22124@hq.icb.chel.su> from "Serge A. Babkin" at Jun 15, 97 08:07:46 am
X-Mailer: ELM [version 2.4 PL24]
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: owner-hackers@FreeBSD.ORG
X-Loop: FreeBSD.org
Precedence: bulk

> There is at least one useful point: should the optimizer be used for
> kernel ? Indeed I got the first bad experience with optimizers
> when I wrote my first driver for SCO. Now I know why SCO
> does not use optimizer for kernel :-)

Guessing: because SCO's programmers have similar problems with
ANSI C permitted register promotion semantics and out of scope
test variable modifications?  8-) 8-).


					Terry Lambert
					terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.