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From: Ingo Oeser <ingo@oeser-vu.de>
To: Andreas Schwab <schwab@suse.de>
Cc: Linus Torvalds <torvalds@osdl.org>,
	Matthew Wilcox <willy@debian.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] use size_t for the broken ioctl numbers
Date: Mon, 8 Sep 2003 15:10:34 +0200	[thread overview]
Message-ID: <200309081510.34883.ingo@oeser-vu.de> (raw)
In-Reply-To: <jeekysjydv.fsf@sykes.suse.de>

On Sunday 07 September 2003 19:34, Andreas Schwab wrote:
> Linus Torvalds <torvalds@osdl.org> writes:
> > 	({ x __dummy; sizeof(__dummy); })
> >
> > which should work with all compiler versions.
>
> This won't work with array types, eg. in <linux/random.h>:
>
> #define RNDGETPOOL	_IOR( 'R', 0x02, int [2] )

It would, if you did this 

#define RNDGETPOOL _IOR('R', 0x02, struct { int x[2];})

I would vote for simply forbidding arrays in this situation (which the compile 
error will handle as well ;-)). Just another case of "Doctor it hurts!"

Regards

Ingo Oeser



  reply	other threads:[~2003-09-08 15:36 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-09-07  6:22 [PATCH] use size_t for the broken ioctl numbers Matthew Wilcox
2003-09-07 16:48 ` Andreas Schwab
2003-09-07 17:29   ` Linus Torvalds
2003-09-07 17:34     ` Andreas Schwab
2003-09-08 13:10       ` Ingo Oeser [this message]
2003-09-08 12:38 ` Andries Brouwer
2003-09-08 15:13   ` Linus Torvalds
2003-09-08 18:40     ` Andries Brouwer
2003-09-08 18:54       ` Linus Torvalds
2003-09-08 19:28       ` Randy.Dunlap
2003-09-08 19:53         ` Jeff Garzik
2003-09-08 20:15           ` Linus Torvalds
2003-09-08 20:26             ` Dave Jones
2003-09-08 21:53               ` Jeff Garzik
2003-09-08 22:25                 ` Dave Jones
2003-09-08 20:27         ` Andries Brouwer
2003-09-08 20:43           ` Linus Torvalds
2003-09-09 11:40   ` Jens Axboe
     [not found] <tbGb.75d.15@gated-at.bofh.it>
     [not found] ` <tbPO.7j9.5@gated-at.bofh.it>
2003-09-07 21:28   ` Arnd Bergmann
2003-09-07 23:15     ` Linus Torvalds
2003-09-07 23:21       ` Linus Torvalds
2003-09-08 13:03         ` Arnd Bergmann
2003-09-08 13:33           ` Andreas Schwab
2003-09-08 13:35           ` Andries Brouwer

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