From mboxrd@z Thu Jan  1 00:00:00 1970
Mime-Version: 1.0 (Apple Message framework v752.3)
In-Reply-To: <13426df10706051736q4e1852a9g3f54d8f6e2d182b4@mail.gmail.com>
References: <13426df10706051736q4e1852a9g3f54d8f6e2d182b4@mail.gmail.com>
Content-Type: text/plain; charset=US-ASCII; format=flowed
Message-Id: <2F03E7E9-C7F5-41C6-9E27-462B6B07EE14@telus.net>
Content-Transfer-Encoding: 7bit
From: Paul Lalonde <plalonde@telus.net>
Subject: Re: [9fans] quiz
Date: Tue,  5 Jun 2007 18:07:00 -0700
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Topicbox-Message-UUID: 7990df2c-ead2-11e9-9d60-3106f5b1d025

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Signed bit field overflow.

You (don't) want "unsigned int botch:1;"

Yuck.

On 5-Jun-07, at 5:36 PM, ron minnich wrote:

> /* catch the bug */
>
> struct x {
>  int botch:1;
> };
>
> fun(){
>  struct x x;
>  x.botch = 0;
>  x.botch = 1;
> }
>
> ok, what's the bug? anyone? I just found this out today. (no, I don't
> use bitfields, but insane people do)
>
> ron

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.5 (Darwin)

iD8DBQFGZgi1pJeHo/Fbu1wRAk8AAJ9GjwNz6JLxWav33huG68SjB4R1YACfZHNI
BtIRBQPaXw91oj5Am+VDVaU=
=Ai0G
-----END PGP SIGNATURE-----