netdev - Re: [PATCH net-next] net: xfrm6: silence sparse warning

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Date:	Fri, 10 Jan 2014 02:53:06 +0000
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Stephen Hemminger <stephen@...workplumber.org>
CC:	David Miller <davem@...emloft.net>, <ying.xue@...driver.com>,
	<steffen.klassert@...unet.com>, <dborkman@...hat.com>,
	<netdev@...r.kernel.org>
Subject: Re: [PATCH net-next] net: xfrm6: silence sparse warning

On Thu, 2014-01-09 at 15:04 -0800, Stephen Hemminger wrote:
> On Wed, 08 Jan 2014 00:56:56 -0500 (EST)
> David Miller <davem@...emloft.net> wrote:
> 
> > From: Ying Xue <ying.xue@...driver.com>
> > Date: Wed, 8 Jan 2014 13:55:09 +0800
> > 
> > > 3. Just drop the patch
> > 
> > This is the only suitable thing to do.
> > --
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> 
> There was some patches floating around to eliminate uses of variable
> length array in the kernel since they aren't supported by CLANG.

I think you're mixing up two different things there.  VLAs are part of
C99 so I'm quite sure Clang supports them (in general).  But they seem
to be deprecated in the kernel anyway, maybe because they make it easy
to introduce a stack overflow.

Ben.

-- 
Ben Hutchings, Staff Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

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