linux-kernel - Re: Kernel Development & Objective-C

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Date:	Sat, 1 Dec 2007 18:18:59 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Bill Davidsen <davidsen@....com>
Cc:	David Newall <david@...idnewall.com>,
	Jan Engelhardt <jengelh@...putergmbh.de>,
	Xavier Bestel <xavier.bestel@...e.fr>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Ben.Crowhurst@...llatravel.co.uk, linux-kernel@...r.kernel.org
Subject: Re: Kernel Development & Objective-C

> Well, original C allowed you to do what you wanted with pointers (I used 
> to teach that back when K&R was "the" C manual). Now people which about 
> having pointers outside the array, which is a crock in practice, as long 
> as you don't actually /use/ an out of range value.

Actually the standards had good reasons to bar this use, because many
runtime environments used segmentation and unsigned segment offsets. On a
286 you could get into quite a mess with out of array reference tricks.

> variable with the address of the start. I was more familiar with the B 
> stuff, I wrote both the interpreter and the code generator+library for 
> the 8080 and GE600 machines. B on MULTICS, those were the days... :-D

B on Honeywell L66, so that may well have been a relative of your code
generator ?

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