From: Michael Buesch <mbuesch@freenet.de>
To: Adrian Bunk <bunk@fs.tum.de>
Cc: Kyle Moffett <mrmacman_g4@mac.com>, Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org
Subject: Re: [2.6 patch][1/3] ipc/ BUG -> BUG_ON conversions
Date: Sat, 28 Aug 2004 18:50:11 +0200 [thread overview]
Message-ID: <200408281850.17463.mbuesch@freenet.de> (raw)
In-Reply-To: <20040828162633.GG12772@fs.tum.de>
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Quoting Adrian Bunk <bunk@fs.tum.de>:
> > Anything you put in BUG_ON() must *NOT* have side effects.
> >...
>
> I'd have said exactly the same some time ago, but I was convinced by
> Arjan that if done correctly, a BUG_ON() with side effects is possible
> with no extra cost even if you want to make BUG configurably do nothing.
#if is_debugging_on
# define BUG_ON(x) do { if (unlikely(x)) BUG(); } while (0)
#else
# define BUG_ON(x) do { if (x) { /* nothing */ } } while (0)
#endif
> cu
> Adrian
>
--
Regards Michael Buesch [ http://www.tuxsoft.de.vu ]
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next prev parent reply other threads:[~2004-08-28 16:52 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-28 15:11 [2.6 patch][0/3] BUG -> BUG_ON conversions Adrian Bunk
2004-08-28 15:15 ` [2.6 patch][1/3] ipc/ " Adrian Bunk
2004-08-28 16:05 ` Kyle Moffett
2004-08-28 16:26 ` Adrian Bunk
2004-08-28 16:50 ` Michael Buesch [this message]
2004-08-28 19:58 ` Andrew Morton
2004-08-28 20:22 ` Adrian Bunk
2004-08-28 20:59 ` Jens Axboe
2004-08-28 21:43 ` Matt Mackall
2004-08-28 15:17 ` [2.6 patch][2/3] kernel/ " Adrian Bunk
2004-08-28 16:09 ` Kyle Moffett
2004-08-28 15:18 ` [2.6 patch][3/3] mm/ " Adrian Bunk
2004-08-28 16:32 ` Denis Vlasenko
2004-08-28 20:58 ` Jens Axboe
2004-08-28 21:24 ` Adrian Bunk
2004-08-29 12:03 ` Jens Axboe
2004-08-29 12:18 ` Oliver Neukum
2004-08-29 13:01 ` Jens Axboe
2004-08-29 13:50 ` Adrian Bunk
2004-08-29 14:08 ` Jens Axboe
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