linux-kernel - Re: [2.6 patch] kernel/cgroup.c: remove dead code

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Message-ID: <20071026013019.GB30533@stusta.de>
Date:	Fri, 26 Oct 2007 03:30:20 +0200
From:	Adrian Bunk <bunk@...nel.org>
To:	Paul Jackson <pj@....com>
Cc:	Paul Menage <menage@...gle.com>, linux-kernel@...r.kernel.org
Subject: Re: [2.6 patch] kernel/cgroup.c: remove dead code

On Thu, Oct 25, 2007 at 06:24:25PM -0700, Paul Jackson wrote:
> Paul M wrote:
> > Sounds reasonable to me. Is there any kind of compile-time assert
> > macro in the kernel?
> 
> Check out the assembly code generated by:
> 
>     BUG_ON(sizeof(cgrp->root->release_agent_path) < PATH_MAX));
> 
> (Hint: you can't find it ;)
> 
> It -is- compile time!

But when the condition is fulfilled, you get a runtime error, not a 
compile error.

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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