diff options
| author | Stefan Fritsch <sf@cvs.openbsd.org> | 2013-06-08 19:06:52 +0000 |
|---|---|---|
| committer | Stefan Fritsch <sf@cvs.openbsd.org> | 2013-06-08 19:06:52 +0000 |
| commit | 41a55873d47f9036578b951acc755a77be819dc0 (patch) | |
| tree | d508695c298843d5952224a433ba2c924446f3f1 /share | |
| parent | 6f5d7d986a8441a86a60a6ff989d87fb8b2bc337 (diff) | |
Add CTASSERT macro, for compile time assertions
ok kettenis@
Diffstat (limited to 'share')
| -rw-r--r-- | share/man/man9/kern.9 | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/share/man/man9/kern.9 b/share/man/man9/kern.9 index c1c4faa7171..b12f83435d0 100644 --- a/share/man/man9/kern.9 +++ b/share/man/man9/kern.9 @@ -1,4 +1,4 @@ -.\" $OpenBSD: kern.9,v 1.16 2013/06/04 19:27:08 schwarze Exp $ +.\" $OpenBSD: kern.9,v 1.17 2013/06/08 19:06:51 sf Exp $ .\" .\" Copyright (c) 2002, 2003 CubeSoft Communications, Inc. .\" <http://www.csoft.org> @@ -24,7 +24,7 @@ .\" IN ANY WAY OUT OF THE USE OF THIS SOFTWARE EVEN IF ADVISED OF THE .\" POSSIBILITY OF SUCH DAMAGE. .\" -.Dd $Mdocdate: June 4 2013 $ +.Dd $Mdocdate: June 8 2013 $ .Dt KERN 9 .Os .Sh NAME @@ -108,6 +108,18 @@ enabled. tests are only included if the kernel has .Dv DEBUG enabled. +.Pp +.nr nS 1 +.Fn CTASSERT "CONDITION" +.nr nS 0 +.Pp +This macro causes a compile time error if the given condition evaluates to +false. +Its main purpose is to verify assertions about type and struct sizes that +would otherwise make the code fail at run time. +.Fn CTASSERT +can be used in global scope or at the start of blocks, where variable +declarations are allowed. .Sh BYTE STRINGS .nr nS 1 .Ft int |