From: Jes Sorensen <jes@sgi.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Jeff Garzik <jeff@garzik.org>,
ricknu-0@student.ltu.se, linux-kernel@vger.kernel.org,
Andrew Morton <akpm@osdl.org>
Subject: Re: [RFC][PATCH] A generic boolean
Date: Fri, 04 Aug 2006 17:58:03 +0200 [thread overview]
Message-ID: <44D36E8B.4040705@sgi.com> (raw)
In-Reply-To: <1154706687.23655.234.camel@localhost.localdomain>
Alan Cox wrote:
> Ar Gwe, 2006-08-04 am 16:35 +0200, ysgrifennodd Jes Sorensen:
>> The proposed patch makes it u1 - if we end up with arch specific
>> defines, as the patch is proposing, developers won't know for sure what
>> the size is and will get alignment wrong. That is not fine.
>
> The _Bool type is up to gcc implementation details.
Which is even worse :(
>> If we really have to introduce a bool type, at least it has to be the
>> same size on all 32 bit archs and the same size on all 64 bit archs.
>
> You don't use bool for talking to hardware, you use it for the most
> efficient compiler behaviour when working with true/false values.
Thats the problem, people will start putting them into structs, and
voila all alignment predictability has gone out the window.
Regards,
Jes
next prev parent reply other threads:[~2006-08-04 15:55 UTC|newest]
Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-19 20:38 [RFC][PATCH] A generic boolean ricknu-0
2006-07-19 21:04 ` Jeff Garzik
2006-07-19 23:17 ` ricknu-0
2006-07-20 0:13 ` Jeff Garzik
2006-07-20 3:04 ` Vadim Lobanov
2006-07-20 3:53 ` Shorty Porty
2006-07-20 3:59 ` Dmitry Torokhov
2006-07-20 8:07 ` Jan Engelhardt
2006-08-04 14:03 ` Jes Sorensen
2006-08-04 14:42 ` Alan Cox
2006-08-04 14:35 ` Jes Sorensen
2006-08-04 15:51 ` Alan Cox
2006-08-04 15:58 ` Jes Sorensen [this message]
2006-08-04 16:00 ` Andreas Schwab
2006-08-04 16:08 ` Jes Sorensen
2006-08-04 16:16 ` Andreas Schwab
2006-08-04 16:26 ` Jes Sorensen
2006-08-04 16:57 ` Andreas Schwab
2006-08-04 18:47 ` Jes Sorensen
2006-08-04 18:51 ` H. Peter Anvin
2006-08-04 18:58 ` Jes Sorensen
2006-08-04 19:04 ` H. Peter Anvin
2006-08-06 9:25 ` Jan Engelhardt
2006-08-06 9:48 ` Andreas Schwab
2006-08-06 9:31 ` Jan Engelhardt
2006-08-06 15:31 ` Jes Sorensen
2006-08-04 16:30 ` Alan Cox
2006-08-04 16:20 ` Jes Sorensen
2006-07-19 21:20 ` Alexey Dobriyan
2006-07-19 22:47 ` ricknu-0
2006-07-19 23:52 ` Peter Williams
2006-07-20 0:08 ` ricknu-0
2006-07-20 8:09 ` Jan Engelhardt
2006-07-21 1:24 ` [RFC][PATCH] A generic boolean (version 2) ricknu-0
2006-07-21 1:34 ` Jeff Garzik
2006-07-21 8:55 ` Pekka Enberg
2006-07-21 21:14 ` Jeff Garzik
2006-07-25 19:04 ` Roman Kononov
2006-07-21 22:31 ` ricknu-0
2006-07-23 19:56 ` ricknu-0
2006-07-21 14:23 ` Jan Engelhardt
2006-07-21 18:27 ` Michael Buesch
2006-07-21 21:14 ` Jeff Garzik
2006-07-21 22:11 ` ricknu-0
2006-07-22 8:56 ` Jan Engelhardt
2006-07-21 23:08 ` [RFC][PATCH] A generic boolean (version 3) ricknu-0
2006-07-21 23:27 ` ricknu-0
2006-07-22 5:40 ` Stefan Richter
2006-07-22 17:08 ` ricknu-0
2006-07-22 18:08 ` Stefan Richter
2006-07-22 8:58 ` Jan Engelhardt
2006-07-22 17:19 ` ricknu-0
2006-07-22 9:55 ` Lars Gullik Bjønnes
2006-07-23 15:43 ` ricknu-0
2006-07-23 15:49 ` [RFC][PATCH] A generic boolean (version 4) ricknu-0
2006-07-23 16:08 ` Jan Engelhardt
2006-07-23 19:36 ` ricknu-0
2006-07-23 20:26 ` Jeff Garzik
2006-07-23 20:25 ` Jeff Garzik
2006-07-23 21:17 ` Jan Engelhardt
2006-07-23 21:44 ` Jeff Garzik
2006-07-24 8:55 ` Paul Jackson
2006-07-23 16:13 ` Michael Buesch
2006-07-23 19:46 ` ricknu-0
2006-07-23 20:24 ` Jeff Garzik
2006-07-23 21:13 ` Paul Jackson
2006-07-25 23:22 ` [RFC][PATCH] A generic boolean (version 5) ricknu-0
2006-07-26 0:42 ` Paul Jackson
2006-07-26 20:28 ` [RFC][PATCH] A generic boolean (version 6) ricknu-0
2006-07-27 1:06 ` Paul Jackson
2006-07-27 2:10 ` Josef Sipek
2006-07-27 3:51 ` ricknu-0
2006-07-27 4:40 ` Josef Sipek
2006-07-27 4:00 ` Paul Jackson
2006-07-27 3:30 ` ricknu-0
2006-07-28 16:57 ` Jan Engelhardt
2006-07-27 2:48 ` Arnd Bergmann
2006-07-27 3:22 ` ricknu-0
2006-07-27 5:27 ` Nicholas Miell
2006-07-27 6:51 ` Paul Jackson
2006-07-27 19:55 ` ricknu-0
2006-07-27 20:13 ` Nicholas Miell
2006-07-28 1:29 ` ricknu-0
2006-07-28 1:56 ` Nicholas Miell
2006-07-28 12:50 ` Alan Cox
2006-07-28 20:24 ` Lars Noschinski
2006-07-28 21:31 ` Nicholas Miell
2006-07-27 19:46 ` [RFC][PATCH] A generic boolean (version 7) ricknu-0
[not found] <6AqZX-3dU-29@gated-at.bofh.it>
[not found] ` <6Art3-45j-35@gated-at.bofh.it>
[not found] ` <6G8xj-W7-13@gated-at.bofh.it>
[not found] ` <6G8QL-1lI-35@gated-at.bofh.it>
[not found] ` <6G90s-1yo-55@gated-at.bofh.it>
[not found] ` <6G9Wm-30t-3@gated-at.bofh.it>
[not found] ` <6GafR-3o1-13@gated-at.bofh.it>
[not found] ` <6Gapq-3OH-15@gated-at.bofh.it>
[not found] ` <6Gapq-3OH-13@gated-at.bofh.it>
[not found] ` <6Gaz6-40T-21@gated-at.bofh.it>
[not found] ` <6GaIN-4dw-25@gated-at.bofh.it>
2006-08-04 20:51 ` [RFC][PATCH] A generic boolean Bodo Eggert
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