On Thu, 19 Jan 2006, Fabiano Ramos wrote:
> On 1/19/06, Olav Kongas <ok@xxxxxxxxxxxxxx> wrote:
> > Hi,
> >
> > The do{SOMETHING}while(0) thingy has been often discussed in
> > many mailing lists, and recently an entry about it was
> > updated in kernelnewbies FAQ.
> >
> > However, what's the role of do{SOMETHING}while, if that
> > SOMETHING is empty. In kernel, both forms of defining
> > 'empty' function-like macros are used:
> >
> > #define foo(stuff...) do { } while(0)
> >
> > and
> >
> > #define foo(stuff...)
> >
> > Purely a style difference, or something more there? If just
> > a style thing, why would anyone prefer a style, which gives
> > (slightly) more work to compiler?
> >
>
> Check out
> http://www.kernelnewbies.org/faq/index.php3#dowhile
Ah, sorry, I had overlooked the first item there.
Learned also about the -Wextra flag. Thanks.
Olav
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