From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DCFB1C65BAE for ; Thu, 13 Dec 2018 18:43:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 98F8820870 for ; Thu, 13 Dec 2018 18:43:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 98F8820870 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codesourcery.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726701AbeLMSnB (ORCPT ); Thu, 13 Dec 2018 13:43:01 -0500 Received: from relay1.mentorg.com ([192.94.38.131]:45457 "EHLO relay1.mentorg.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726381AbeLMSnB (ORCPT ); Thu, 13 Dec 2018 13:43:01 -0500 Received: from nat-ies.mentorg.com ([192.94.31.2] helo=svr-ies-mbx-01.mgc.mentorg.com) by relay1.mentorg.com with esmtps (TLSv1.2:ECDHE-RSA-AES256-SHA384:256) id 1gXVwf-00034E-Ph from joseph_myers@mentor.com ; Thu, 13 Dec 2018 10:42:49 -0800 Received: from digraph.polyomino.org.uk (137.202.0.90) by svr-ies-mbx-01.mgc.mentorg.com (139.181.222.1) with Microsoft SMTP Server (TLS) id 15.0.1320.4; Thu, 13 Dec 2018 18:42:46 +0000 Received: from jsm28 (helo=localhost) by digraph.polyomino.org.uk with local-esmtp (Exim 4.90_1) (envelope-from ) id 1gXVwb-0002GH-US; Thu, 13 Dec 2018 18:42:45 +0000 Date: Thu, 13 Dec 2018 18:42:45 +0000 From: Joseph Myers X-X-Sender: jsm28@digraph.polyomino.org.uk To: Florian Weimer CC: Rich Felker , Catalin Marinas , Andy Lutomirski , , Linus Torvalds , X86 ML , LKML , Linux API , "H. Peter Anvin" , Peter Zijlstra , Borislav Petkov , Mike Frysinger , "H. J. Lu" , , Arnd Bergmann , Will Deacon Subject: Re: Can we drop upstream Linux x32 support? In-Reply-To: <87o99pl8es.fsf@oldenburg2.str.redhat.com> Message-ID: References: <20181212165237.GT23599@brightrain.aerifal.cx> <20181213124025.bczxzj6ez34joo6v@localhost> <20181213155744.GU23599@brightrain.aerifal.cx> <87o99pl8es.fsf@oldenburg2.str.redhat.com> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" X-Originating-IP: [137.202.0.90] X-ClientProxiedBy: svr-ies-mbx-01.mgc.mentorg.com (139.181.222.1) To svr-ies-mbx-01.mgc.mentorg.com (139.181.222.1) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 13 Dec 2018, Florian Weimer wrote: > Similarly, we could have integer types with trap representations. C++2a will require two's complement representation for integer types, with no trap representations (other than for bool, where only 0 and 1 are valid representations). It seems very plausible that C will follow. -- Joseph S. Myers joseph@codesourcery.com