[RFC]: (void)0 instead of empty defines

[Stefan Farfeleder]

On Mon, Jun 15, 2009 at 11:38:33AM -0700, Sam Leffler wrote:
> 
> Are you saying that:
> 
> if (cond)
>    ;
> 
> is considered worthy of a warning by the compiler?  Is it just "if" or all 
> conditional control constructs (e.g. while)?
> 
> I can image many instances of this construct arising from debugging 
> facilities.  This sounds like a stupid restriction and I would argue we 
> should just disable the warning.

GCC warns too with -Wextra.