220 31704 <40301952.JFSPpDkHTG@tjmaciei-mobl1> article Path: news.gmane.org!.POSTED!not-for-mail From: Thiago Macieira Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Simplify virtual inheritance rules Date: Sun, 19 Mar 2017 17:36:21 -0700 Lines: 28 Approved: news@gmane.org Message-ID: <40301952.JFSPpDkHTG@tjmaciei-mobl1> References: <6aa2e439-345e-4f04-8843-f38bb7b825b2@isocpp.org> <5741111.lt9RR1yvSQ@tjmaciei-mobl1> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Trace: blaine.gmane.org 1489970192 24351 195.159.176.226 (20 Mar 2017 00:36:32 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 20 Mar 2017 00:36:32 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCB4TK757YBRBCOIXTDAKGQEHMIHLHQ@isocpp.org Mon Mar 20 01:36:25 2017 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-pg0-f69.google.com ([74.125.83.69]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cplJ6-00052D-SQ for gclcip-std-proposals@m.gmane.org; Mon, 20 Mar 2017 01:36:21 +0100 Original-Received: by mail-pg0-f69.google.com with SMTP id 79sf142672204pgf.2 for ; Sun, 19 Mar 2017 17:36:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding:x-original-sender :x-original-authentication-results:reply-to:precedence:mailing-list :list-id:x-spam-checked-in-group:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=opCujC9BTHD1J2zJoTM4+rJe2NNVAmX8GPd3cLoQzaE=; b=HMAttF1ls649tY0msAF9lSsuw0hsBO3KB/ic2N5XxrKzk+MpF9Jnww2HIps4X80RFX KR57l0uoVLbC3eseU4JtBKJXHlZTBrPEZBaKgaPtTxf4lGLDmUDqMLdPuA0J8pH8UVBs aJpftdWw/Xho2aKZh2oNPYShZ3z5z3a+qsNvZDivUk6MN0j9Zk6JZ0BoedU12ziRUoF1 WNaER3hRdsPDfCptw4TO/eLaVsJzI74ZRsWF+tCmobfg8c5GRef6cRhXmzJrhBT+IoTH watwROY4ZEinUByCAtf6xcdlhlSjQ4ksy23SGXWMxeWXXO7FIGFMdf4PG+KMCKPcTXXc g9Bg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding:x-original-sender :x-original-authentication-results:reply-to:precedence:mailing-list :list-id:x-spam-checked-in-group:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=opCujC9BTHD1J2zJoTM4+rJe2NNVAmX8GPd3cLoQzaE=; b=G6m+dtNKplxPu/VV8u+w2ZogttnV5iv2vzXFXiy62mNcpXvMJED+QSSPmFFxCdgvO0 vpBVCB0lum6C6WManWzxvol8Wty4wYd4Wek5QvLCIOPwAh3i5A3x4m7Je9OgH+O2JLcO 3o4SzTKWiIQaI9TqBbEqDD7KpNut+DfETHN1we8/stXaHcSn78b8QWH4ITtAqJr1ZrZD R4ez9DRVfRL81dBfniQe7/X0vhIdIvGmddEN56rBcqGhfTLvjMXAhpLTmhHHHxsW1HWN GtUNIaWKuaTJeM3Rc/miUfug+/fcwiTdc+7kTSW30P2aY+Hv8TUGZjYCUSqCZtp+Al1v 1CN X-Gm-Message-State: AFeK/H07RmpVNvKo+QVNqjjbhldTWM1wgrah4DWXEb4QbRXCm++HHhCgAl4cbQddvbFzlw== X-Received: by 10.99.56.80 with SMTP id h16mr3756946pgn.83.1489970186383; Sun, 19 Mar 2017 17:36:26 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.157.89.216 with SMTP id u24ls6687145otg.40.gmail; Sun, 19 Mar 2017 17:36:25 -0700 (PDT) X-Received: by 10.13.223.149 with SMTP id i143mr11862622ywe.32.1489970185534; Sun, 19 Mar 2017 17:36:25 -0700 (PDT) Original-Received: from gondolin.macieira.info (gondolin.macieira.info. [2a01:4f8:d13:f81:21c:14ff:fe01:12a3]) by mx.google.com with ESMTP id g66si4951715ybi.50.2017.03.19.17.36.25 for ; Sun, 19 Mar 2017 17:36:25 -0700 (PDT) Received-SPF: pass (google.com: domain of thiago@macieira.org designates 2a01:4f8:d13:f81:21c:14ff:fe01:12a3 as permitted sender) client-ip=2a01:4f8:d13:f81:21c:14ff:fe01:12a3; Original-Received: from tjmaciei-mobl1.localnet (unknown [IPv6:2601:1c0:4501:5f9f:ad30:6dbd:5d7:7a4d]) by gondolin.macieira.info (Postfix) with ESMTPSA id BF35C11B634 for ; Sun, 19 Mar 2017 17:36:23 -0700 (PDT) In-Reply-To: X-Original-Sender: thiago@macieira.org X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of thiago@macieira.org designates 2a01:4f8:d13:f81:21c:14ff:fe01:12a3 as permitted sender) smtp.mailfrom=thiago@macieira.org Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Google-Group-Id: 399137483710 List-Post: , List-Help: , List-Archive: List-Subscribe: , List-Unsubscribe: , Xref: news.gmane.org gmane.comp.lang.c++.isocpp.proposals:31704 Archived-At: On domingo, 19 de mar=C3=A7o de 2017 13:01:52 PDT Ville Voutilainen wrote: > 1) if default-initializing B from E is valid, we're done. > 2) if default-initializing B from E fails due to access violation, we're > done. 3) if default-initializing B from E fails due to overload resolutio= n > failure for not finding a viable candidate, > don't initialize B in E but instead initialize E in D. > 4) any existing explicit initialization of B from E is unchanged, and > there's no fallback to any base class. You're excluding the "I'll have what he's having" case. That is, in your=20 example, there's no way to have E initilise B like D does without specifica= lly=20 duplicating what D does. --=20 Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org Software Architect - Intel Open Source Technology Center --=20 You received this message because you are subscribed to the Google Groups "= ISO C++ Standard - Future Proposals" group. To unsubscribe from this group and stop receiving emails from it, send an e= mail to std-proposals+unsubscribe@isocpp.org. To post to this group, send email to std-proposals@isocpp.org. To view this discussion on the web visit https://groups.google.com/a/isocpp= ..org/d/msgid/std-proposals/40301952.JFSPpDkHTG%40tjmaciei-mobl1. .