From owner-cvs-all@FreeBSD.ORG Fri May 30 14:58:34 2008 Return-Path: Delivered-To: cvs-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id BD1F610656C2; Fri, 30 May 2008 14:58:34 +0000 (UTC) (envelope-from alexander@leidinger.net) Received: from redbull.bpaserver.net (redbullneu.bpaserver.net [213.198.78.217]) by mx1.freebsd.org (Postfix) with ESMTP id 63C8A8FC1C; Fri, 30 May 2008 14:58:34 +0000 (UTC) (envelope-from alexander@leidinger.net) Received: from outgoing.leidinger.net (p54A5751E.dip.t-dialin.net [84.165.117.30]) by redbull.bpaserver.net (Postfix) with ESMTP id C3DB12E06D; Fri, 30 May 2008 16:58:30 +0200 (CEST) Received: from webmail.leidinger.net (webmail.leidinger.net [192.168.1.102]) by outgoing.leidinger.net (Postfix) with ESMTP id 2970710CEAB; Fri, 30 May 2008 16:58:28 +0200 (CEST) Received: (from www@localhost) by webmail.leidinger.net (8.14.2/8.13.8/Submit) id m4UEwROj096717; Fri, 30 May 2008 16:58:27 +0200 (CEST) (envelope-from Alexander@Leidinger.net) Received: from pslux.cec.eu.int (pslux.cec.eu.int [158.169.9.14]) by webmail.leidinger.net (Horde Framework) with HTTP; Fri, 30 May 2008 16:58:27 +0200 Message-ID: <20080530165827.89052ulp729ogzy8@webmail.leidinger.net> X-Priority: 3 (Normal) Date: Fri, 30 May 2008 16:58:27 +0200 From: Alexander Leidinger To: Robert Watson References: <200805272004.m4RK4SZt029194@repoman.freebsd.org> <483C7FF2.6000607@FreeBSD.org> <483C977F.20105@delphij.net> <20080528060333.GA4699@zim.MIT.EDU> <20080529084608.X39873@fledge.watson.org> <20080529162517.V3678@fledge.watson.org> In-Reply-To: <20080529162517.V3678@fledge.watson.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; DelSp="Yes"; format="flowed" Content-Disposition: inline Content-Transfer-Encoding: quoted-printable User-Agent: Internet Messaging Program (IMP) H3 (4.2-RC2) / FreeBSD-8.0 X-BPAnet-MailScanner-Information: Please contact the ISP for more information X-BPAnet-MailScanner: Found to be clean X-BPAnet-MailScanner-SpamCheck: not spam, ORDB-RBL, SpamAssassin (not cached, score=-15.4, required 6, autolearn=not spam, BAYES_00 -15.00, RDNS_DYNAMIC 0.10, SMILEY -0.50) X-BPAnet-MailScanner-From: alexander@leidinger.net X-Spam-Status: No X-Mailman-Approved-At: Fri, 30 May 2008 15:30:03 +0000 Cc: Maxim Sobolev , src-committers@FreeBSD.org, d@delphij.net, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org, Daniel Eischen , Xin LI , re@FreeBSD.org, David Schultz Subject: Re: cvs commit: src/include string.h src/lib/libc/string Makefile.inc memchr.3 memrchr.c src/sys/sys param.h X-BeenThere: cvs-all@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: CVS commit messages for the entire tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 May 2008 14:58:34 -0000 Quoting Robert Watson (from Thu, 29 May 2008 =20 16:29:34 +0100 (BST)): > On Thu, 29 May 2008, Daniel Eischen wrote: > >>> So, this is neither a vote for nor against a backout, but this is =20 >>> a general call to resist the conservative tendancy that says =20 >>> "don't MFC minor things" because, in macro, it has a significant =20 >>> drag effect on the MFC process that keeps RELENG branches =20 >>> maintainable. >> >> Ok, but consider the prior email with kan about MFC's after an 8.0 =20 >> release. Since you must be able to run 7.x binaries on 8.0, then =20 >> you can't MFC any symbol changes from 8.0+ back to 7.x. The =20 >> symbols are basically frozen in 7.x after 8.0 is released. > > Sounds like a bug. :-) We have the possibility of this behavior even in older releases. =20 Imagine a 8.0 release and a 8.1 release before a 7.4 release. And let =20 8.1 have a symbol which is not available in 8.0 (MF9). Now let's MFC =20 this symbol to 7-stable before 7.4. Boom, you can not run a 7.4 binary =20 which uses this symbol on 8.0. More or less it comes down to be careful about things to MFC (don't =20 MFC symbols to the second last branch). Bye, Alexander. --=20 I used to think I was indecisive, but now I'm not so sure. http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID =3D B0063FE7 http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID =3D 72077137