From owner-svn-src-all@freebsd.org Fri Dec 16 22:22:50 2016 Return-Path: Delivered-To: svn-src-all@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 E7A4DC83E57; Fri, 16 Dec 2016 22:22:50 +0000 (UTC) (envelope-from vangyzen@FreeBSD.org) Received: from smtp.vangyzen.net (hotblack.vangyzen.net [IPv6:2607:fc50:1000:7400:216:3eff:fe72:314f]) by mx1.freebsd.org (Postfix) with ESMTP id CABCF1042; Fri, 16 Dec 2016 22:22:50 +0000 (UTC) (envelope-from vangyzen@FreeBSD.org) Received: from ford.home.vangyzen.net (unknown [76.164.15.242]) by smtp.vangyzen.net (Postfix) with ESMTPSA id BBAEB5647F; Fri, 16 Dec 2016 16:22:49 -0600 (CST) Subject: Re: svn commit: r310138 - head/lib/libc/stdio To: Ian Lepore , Baptiste Daroussin , "Conrad E. Meyer" , Dimitry Andric References: <201612160144.uBG1ipjW016736@repo.freebsd.org> <20161216193128.wgskqt4vc44vdd7o@ivaldir.etoilebsd.net> <1481918834.1972.77.camel@freebsd.org> Cc: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org From: Eric van Gyzen Message-ID: <6b3b39af-467f-087e-261f-db80e027276e@FreeBSD.org> Date: Fri, 16 Dec 2016 16:22:43 -0600 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0 MIME-Version: 1.0 In-Reply-To: <1481918834.1972.77.camel@freebsd.org> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 16 Dec 2016 22:22:51 -0000 On 12/16/2016 14:07, Ian Lepore wrote: > On Fri, 2016-12-16 at 20:31 +0100, Baptiste Daroussin wrote: >> On Fri, Dec 16, 2016 at 01:44:51AM +0000, Conrad E. Meyer wrote: >>> >>> Author: cem >>> Date: Fri Dec 16 01:44:50 2016 >>> New Revision: 310138 >>> URL: https://svnweb.freebsd.org/changeset/base/310138 >>> >>> Log: >>> vfprintf(3): Add support for kernel %b format >>> >>> This is a direct port of the kernel %b format. >>> >>> I'm unclear on if (more) non-portable printf extensions will be a >>> problem. I think it's desirable to have userspace formats include >>> all >>> kernel formats, but there may be competing goals I'm not aware >>> of. >>> >>> Reviewed by: no one, unfortunately >>> Sponsored by: Dell EMC Isilon >>> Differential Revision: https://reviews.freebsd.org/D8426 >>> >> I really don't think it is a good idea, if used in userland it would >> be make >> more of our code difficult to port elsewhere. >> >> Other than that, it makes more difficult to use vanilla gcc with out >> userland. >> and it is adding more complexity to be able to build freebsd from a >> non freebsd >> system which some people are working on. >> >> Personnaly I would prefer to see those extensions removed from the >> kernel rather >> than see them available in userland. >> >> Can't we use simple helper function instead? >> >> Best regards, >> Bapt > > I'll add a big +1 for the concept of eliminating the extensions from > the kernel instead of extending them to userland. People ask why > freebsd can't be built using standard tools on foreign build hosts, and > these non-standard extensions are part of the reason why. I strongly agree. Thanks for mentioning snprintb, Dimitry; I hadn't seen that one. Eric