Re: [tip:core/urgent] WARN_ON_SMP(): Allow use in if() statements on UP
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- Subject: Re: [tip:core/urgent] WARN_ON_SMP(): Allow use in if() statements on UP
- From: Alexey Dobriyan <adobriyan@xxxxxxxxx>
- Date: Fri, 25 Mar 2011 21:31:28 +0200
- Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, mingo@xxxxxxxxxx, hpa@xxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, dvhart@xxxxxxxxxxxxxxx, peterz@xxxxxxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, srostedt@xxxxxxxxxx, tglx@xxxxxxxxxxxxx, laijs@xxxxxxxxxxxxxx, mingo@xxxxxxx, linux-tip-commits@xxxxxxxxxxxxxxx
- In-reply-to: <1301077163.14261.199.camel@xxxxxxxxxxxxxxxxxxx>
- User-agent: Mutt/1.5.21 (2010-09-15)
On Fri, Mar 25, 2011 at 02:19:23PM -0400, Steven Rostedt wrote:
> On Fri, 2011-03-25 at 14:16 -0400, Steven Rostedt wrote:
>
> > Also, a quick test shows that
> >
> > 0;
> >
> > gives the warning:
> >
> > "warning: statement with no effect"
>
> Would you like me to add a comment that states:
>
> /*
> * Use ({0;}) as just "0" will cause gcc to output:
> * warning: statement with no effect
> */
Try ((void)0)
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