linux-kernel - Re: [RFC PATCH] type safe allocator

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Message-ID: <Pine.LNX.4.64.0708011341160.26668@fbirervta.pbzchgretzou.qr>
Date:	Wed, 1 Aug 2007 13:44:13 +0200 (CEST)
From:	Jan Engelhardt <jengelh@...putergmbh.de>
To:	Miklos Szeredi <miklos@...redi.hu>
cc:	andi@...stfloor.org, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, akpm@...ux-foundation.org,
	torvalds@...ux-foundation.org
Subject: Re: [RFC PATCH] type safe allocator


On Aug 1 2007 12:45, Miklos Szeredi wrote:
>> > 
>> > #define k_new(type, flags) ((type *) kmalloc(sizeof(type), flags))
>> 
>> The cast doesn't make it more safe in any way
>
>I does, since a warning will be issued, if the type of the assigned
>pointer doesn't match the requested allocation.
>
>And yes, warnings are _very_ useful in C for enforcing type safety.

	void *p;
	p = (struct foo *)kmalloc(sizeof(struct foo), GFP_KERNEL);



	Jan
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