linux-kernel - Re: linux-next: sparc tree build warning

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Message-Id: <20100129173220.abdd823d.sfr@canb.auug.org.au>
Date:	Fri, 29 Jan 2010 17:32:20 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	David Miller <davem@...emloft.net>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: linux-next: sparc tree build warning

Hi Dave,

On Thu, 28 Jan 2010 20:12:06 -0800 (PST) David Miller <davem@...emloft.net> wrote:
>
> Simply ignore the warning then, I thought you were reporting
> a build failure.

No worries, I just report warnings in case noone else notices them.  And
in case they are important.

> Looking at the specific case of net/core/pktgen.c:867
> 
> "len" is variable in the net/core/pktgen.c line that emits the
> warning
> 
> Even though it is limited to "sizeof(name) - 1" via strn_len()'s
> third argument, that's a lot to expect the compiler to dig into
> and be able to conclude invariants from.

Yeah, indeed.  We need an intuitive compiler :-)

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
http://www.canb.auug.org.au/~sfr/

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