linux-kernel - Re: kmalloc() with size zero

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Message-ID: <460BCF8E.7030705@tmr.com>
Date:	Thu, 29 Mar 2007 10:39:10 -0400
From:	Bill Davidsen <davidsen@....com>
To:	eranian@....hp.com
CC:	Folkert van Heusden <folkert@...heusden.com>,
	Vignesh Babu BM <vignesh.babu@...ro.com>,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	ak@...e.de, Jan Engelhardt <jengelh@...ux01.gwdg.de>
Subject: Re: kmalloc() with size zero

Stephane Eranian wrote:
> Hi,
> 
> On Sun, Mar 25, 2007 at 06:30:34PM +0200, Folkert van Heusden wrote:
>>>> I'd say "feature", glibc's malloc also returns an address on
>>>> malloc(0).
>>>>
>>> This is implementation defined-the standard allows for return of either
>>> null or an address.
>> Entirely for entertainment: AIX (5.3) returns NULL, IRIX returns a valid
>> address.
>>
> That's interesting, so many different behaviors! Personally, I still prefer
> when malloc(0) returns zero because it makes it easier to catch errors.
> 
Exactly, the address returned is not really useful, the improved error 
checking is useful.

-- 
Bill Davidsen <davidsen@....com>
   "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot
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