From: Paul Mackerras <paulus@samba.org>
To: Al Viro <viro@ftp.linux.org.uk>
Cc: Alexey Dobriyan <adobriyan@sw.ru>,
akpm@osdl.org, torvalds@osdl.org, linux-kernel@vger.kernel.org,
herbert@gondor.apana.org.au
Subject: Re: WARN_ON() which sometimes sucks
Date: Wed, 1 Aug 2007 13:53:25 +1000 [thread overview]
Message-ID: <18096.949.934194.648312@cargo.ozlabs.ibm.com> (raw)
In-Reply-To: <20070731160248.GK21089@ftp.linux.org.uk>
Al Viro writes:
> Actually, the real problem is different - WTF do we need that typeof
> anyway?
> int ret_warn_on = !!(condition);
> [same as now]
> will work just fine...
It will mean more code on architectures which have a
conditional-trap-on-nonzero instruction, such as powerpc, since the
compiler will generate instructions to evaluate !!x. But I don't see
any reason why ret_warn_on couldn't be a long.
Paul.
next prev parent reply other threads:[~2007-08-01 3:57 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-31 15:55 Alexey Dobriyan
2007-07-31 16:02 ` Al Viro
2007-08-01 3:53 ` Paul Mackerras [this message]
2007-08-01 4:05 ` Linus Torvalds
2007-08-01 4:20 ` Paul Mackerras
2007-08-01 15:17 ` Joe Korty
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