From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 52374 invoked by alias); 9 Dec 2015 21:31:24 -0000 Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Received: (qmail 52356 invoked by uid 89); 9 Dec 2015 21:31:23 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-0.4 required=5.0 tests=AWL,BAYES_00,KAM_MXURI,RCVD_IN_DNSWL_LOW,SPF_HELO_PASS autolearn=no version=3.3.2 X-HELO: mail.ud10.udmedia.de Received: from ud10.udmedia.de (HELO mail.ud10.udmedia.de) (194.117.254.50) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-GCM-SHA384 encrypted) ESMTPS; Wed, 09 Dec 2015 21:31:22 +0000 Received: (qmail 6065 invoked from network); 9 Dec 2015 22:31:18 +0100 Received: from ip5b41f88a.dynamic.kabel-deutschland.de (HELO x4) (ud10?360p3@91.65.248.138) by mail.ud10.udmedia.de with ESMTPSA (ECDHE-RSA-AES256-SHA encrypted, authenticated); 9 Dec 2015 22:31:18 +0100 Date: Wed, 09 Dec 2015 21:31:00 -0000 From: Markus Trippelsdorf To: "H.J. Lu" Cc: Richard Biener , Jason Merrill , GCC Patches Subject: Re: PING^1: [PATCH] Add TYPE_EMPTY_RECORD for C++ empty class Message-ID: <20151209213118.GC317@x4> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-SW-Source: 2015-12/txt/msg01064.txt.bz2 On 2015.12.09 at 10:53 -0800, H.J. Lu wrote: > > Empty C++ class is a corner case which isn't covered in psABI nor C++ ABI. > There is no mention of "empty record" in GCC documentation. But there are > plenty of "empty class" in gcc/cp. This change affects all targets. C++ ABI > should specify how it should be passed. There is a C++ ABI mailinglist, where you could discuss this issue: http://sourcerytools.com/cgi-bin/mailman/listinfo/cxx-abi-dev -- Markus