netdev - Re: [PATCH 1/2] genetlink: trigger BUG

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Date:	Wed, 20 Mar 2013 17:32:59 +0000
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	David Miller <davem@...emloft.net>
CC:	<yamato@...hat.com>, <netdev@...r.kernel.org>
Subject: Re: [PATCH 1/2] genetlink: trigger BUG_ON if a group name is too
 long

On Wed, 2013-03-20 at 12:07 -0400, David Miller wrote:
> From: Masatake YAMATO <yamato@...hat.com>
> Date: Tue, 19 Mar 2013 20:47:27 +0900
> 
> > Trigger BUG_ON if a group name is longer than GENL_NAMSIZ.
> > 
> > Signed-off-by: Masatake YAMATO <yamato@...hat.com>
> 
> Applied, thanks.
> 
> Although I'm disappointed that the compiler doesn't say anything about
> this in the assignment.
> 
> We're assigning "char[16] = STRING" and it doesn't say anything if the
> final NULL char doesn't fit into the array.

Unfortunately the C standard says this is allowed.  (Though the C++
standard says it's not!)  That doesn't mean the compiler can't warn
about it, of course.

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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