Re: [Xen-devel] [PATCH] introduce __must_be_array

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 20/05/2009 06:39, "Jan Beulich" <JBeulich@xxxxxxxxxx> wrote:

>> Would simply removing the cast to void from BUILD_BUG_ON() lead to compiler
>> warnings?
> 
> While I didn't try it, I'm convinced it would.

I tried it (gcc 4.1.2) and it didn't. And I'm not sure what the theoretical
warning message would be: Throwing away a non-void value? We do that with
return values from functions very often.

I'll change BUILD_BUG_ON() and avoid BUILD_BUG_ON_ZERO(), but revert to your
approach if some gccs turn out to act differently.

 -- Keir



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