From owner-svn-src-head@freebsd.org  Wed Mar 16 07:24:18 2016
Return-Path: <owner-svn-src-head@freebsd.org>
Delivered-To: svn-src-head@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id 0DBAFAD242C;
 Wed, 16 Mar 2016 07:24:18 +0000 (UTC) (envelope-from hps@selasky.org)
Received: from mail.turbocat.net (heidi.turbocat.net [88.198.202.214])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id CEB101F49;
 Wed, 16 Mar 2016 07:24:17 +0000 (UTC) (envelope-from hps@selasky.org)
Received: from laptop015.home.selasky.org (unknown [62.141.129.119])
 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
 (No client certificate requested)
 by mail.turbocat.net (Postfix) with ESMTPSA id 1597B1FE024;
 Wed, 16 Mar 2016 08:24:12 +0100 (CET)
Subject: Re: svn commit: r296880 - in head: share/man/man9 sys/kern sys/sys
To: Don Lewis <truckman@FreeBSD.org>, glebius@FreeBSD.org
References: <201603152156.u2FLuDPJ035986@gw.catspoiler.org>
Cc: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
From: Hans Petter Selasky <hps@selasky.org>
Message-ID: <56E90AC3.50802@selasky.org>
Date: Wed, 16 Mar 2016 08:26:59 +0100
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:38.0) Gecko/20100101
 Thunderbird/38.5.0
MIME-Version: 1.0
In-Reply-To: <201603152156.u2FLuDPJ035986@gw.catspoiler.org>
Content-Type: text/plain; charset=windows-1252; format=flowed
Content-Transfer-Encoding: 7bit
X-BeenThere: svn-src-head@freebsd.org
X-Mailman-Version: 2.1.21
Precedence: list
List-Id: SVN commit messages for the src tree for head/-current
 <svn-src-head.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-head/>
List-Post: <mailto:svn-src-head@freebsd.org>
List-Help: <mailto:svn-src-head-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 16 Mar 2016 07:24:18 -0000

On 03/15/16 22:56, Don Lewis wrote:
> How can you do a CTASSERT() on something that isn't known at compile
> time?
>

It can be part of the API, that some arguments cannot be variables. It 
makes typechecking and other checking easier.

Gleb: I'll test and submit an array size assert for the static sysctl 
u64 array version.

--HPS