Am 17.07.2014 um 16:55 schrieb Taylor R Campbell <riastr...@netbsd.org>:
> Module Name: src
> Committed By: riastradh
> Date: Thu Jul 17 14:55:32 UTC 2014
>
> Modified Files:
> src/sys/sys: systm.h
>
> Log Message:
> Expand null macros to `do {} while (0)', not to nothing.
>
>
Not that I object, but out of curiosity, what is this good for, or, why is this
need/a good thing?
> Index: src/sys/sys/systm.h
> diff -u src/sys/sys/systm.h:1.263 src/sys/sys/systm.h:1.264
> --- src/sys/sys/systm.h:1.263 Thu Apr 3 15:22:57 2014
> +++ src/sys/sys/systm.h Thu Jul 17 14:55:32 2014
> @@ -1,4 +1,4 @@
> -/* $NetBSD: systm.h,v 1.263 2014/04/03 15:22:57 christos Exp $ */
> +/* $NetBSD: systm.h,v 1.264 2014/07/17 14:55:32 riastradh Exp $ */
>
> /*-
> * Copyright (c) 1982, 1988, 1991, 1993
> @@ -527,7 +527,7 @@ void assert_sleepable(void);
> #if defined(DEBUG)
> #define ASSERT_SLEEPABLE() assert_sleepable()
> #else /* defined(DEBUG) */
> -#define ASSERT_SLEEPABLE() /* nothing */
> +#define ASSERT_SLEEPABLE() do {} while (0)
> #endif /* defined(DEBUG) */
>
> vaddr_t calc_cache_size(vsize_t , int, int);
>
