empty function macros
Gary Jennejohn
gljennjohn at googlemail.com
Sun Jan 30 19:11:46 UTC 2011
On Sun, 30 Jan 2011 17:29:41 +0000
Alexander Best <arundel at freebsd.org> wrote:
> hi there,
>
> i noticed freebsd has a few of the following macros:
>
> #define FUNC(sb)
>
> when you do something like
>
> if (cond)
> FUNC(i)
>
> the compiler complains about an if statement with an empty body. any sensible
> way of dealing with this issue?
>
> i saw some reiserfs code which does the following to silence compilers:
>
> #define FUNC(sb) do { } while (0)
>
What happens if you treat it like a real function call and put ';'
after it?
--
Gary Jennejohn (gj@)
More information about the freebsd-hackers
mailing list