From mboxrd@z Thu Jan  1 00:00:00 1970
References: <1306b366fc14378754e4d10a993cce67@rei2.9hal>
From: Matthew Veety <mveety@gmail.com>
Content-Type: text/plain;
	charset=us-ascii
In-Reply-To: <1306b366fc14378754e4d10a993cce67@rei2.9hal>
Message-Id: <391C754D-FA39-48FA-B2CF-079FAA8B0ADF@gmail.com>
Date: Wed,  2 Jan 2013 13:32:05 -0500
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Content-Transfer-Encoding: 7bit
Mime-Version: 1.0 (1.0)
Subject: Re: [9fans] arm compiler bug
Topicbox-Message-UUID: fb8c7482-ead7-11e9-9d60-3106f5b1d025

Is this related to the bug I found in python on arm?

On Jan 2, 2013, at 4:05, cinap_lenrek@gmx.de wrote:

> 0 < -0x80000000 == 1 with 5c.
>
> the problem is caused by this:
>
>        if(a == ACMP && f1->op == OCONST && p->from.offset < 0) {
>            p->as = ACMN;
>            p->from.offset = -p->from.offset;
>        }
>
> because 0x80000000 == -0x80000000
>
> adding the following check to that if expression fixes it:
>
> && p->from.offset != -p->from.offset
>
> silly python code.
>
> --
> cinap
>