On Sun Jan 30 11, Gary Jennejohn wrote: > On Sun, 30 Jan 2011 17:29:41 +0000 > Alexander Best <arun...@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?
sorry this was my fault. it should have actually been: if (cond) FUNC(i); basically, since FUNC evaluates to nothing this results in if (cond) ; while gcc doesn't complain, clang does. cheers. alex > > -- > Gary Jennejohn (gj@) -- a13x _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"