From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=AWL,BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,RCVD_IN_DNSWL_MED,RCVD_IN_MSPIKE_H4,RCVD_IN_MSPIKE_WL, SPF_HELO_PASS,SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dcvr.yhbt.net (Postfix) with ESMTPS id DA8881F4B4 for ; Fri, 18 Dec 2020 18:32:56 +0000 (UTC) Received: from localhost ([::1]:37758 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kqKYh-0002Jw-Jn for normalperson@yhbt.net; Fri, 18 Dec 2020 13:32:55 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:53360) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kqKYd-0002Ja-4t for bug-gnulib@gnu.org; Fri, 18 Dec 2020 13:32:51 -0500 Received: from mo4-p02-ob.smtp.rzone.de ([85.215.255.84]:12178) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kqKYa-0004YC-3J for bug-gnulib@gnu.org; Fri, 18 Dec 2020 13:32:50 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1608316364; s=strato-dkim-0002; d=clisp.org; h=References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:From: Subject:Sender; bh=vLm0XHFjQJ9zRwkzzbP/qLrvmjGxYkPVXfrLtxhTO4I=; b=IbKzKhpmK6wr1Uj8ZlRmQ0SejD4/7OYHbgZvEglz/ESj80RCd8sbxMkV2yuqTShnHE tJ9JP/9bioniqNaJIMvc1GWzjXhhrjEDAlLvw9ddTLTONe7mEyvpaZ83ahREfze6NMQm Nf0nQF9R7WP+w9/x/FjQzP7ZkTzU52G1qqeZujq+fPXnfwRiM4ENjJIrXZnRrtfyOCRD 7/KYHpv1U6Tmrez4sbKHVgPumEnAH5DegSqNdAURbsQXLDoPIdU5cDP+HWreYwOUFmpr 4wZjqr9aGELaasOrSrkvPA6Y9ME2475QTGcMp/974oEywllUxnIA/YUuTyjCwL5bi8tX pcVw== X-RZG-AUTH: ":Ln4Re0+Ic/6oZXR1YgKryK8brlshOcZlIWs+iCP5vnk6shH+AHjwLuWOGaf0yJVW" X-RZG-CLASS-ID: mo00 Received: from bruno.haible.de by smtp.strato.de (RZmta 47.9.3 DYNA|AUTH) with ESMTPSA id K04aa6wBIIWh4lw (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (curve X9_62_prime256v1 with 256 ECDH bits, eq. 3072 bits RSA)) (Client did not present a certificate); Fri, 18 Dec 2020 19:32:43 +0100 (CET) From: Bruno Haible To: Paul Eggert Subject: Re: FYI: s390x: Require GCC 7.1 or later to build glibc due to __builtin_add_overflow Date: Fri, 18 Dec 2020 19:32:42 +0100 Message-ID: <3477388.eNboq5l62f@omega> User-Agent: KMail/5.1.3 (Linux/4.4.0-197-generic; KDE/5.18.0; x86_64; ; ) In-Reply-To: References: <20201215141803.252050-1-stli@linux.ibm.com> <13406150.36Q1jn4KYa@omega> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Received-SPF: none client-ip=85.215.255.84; envelope-from=bruno@clisp.org; helo=mo4-p02-ob.smtp.rzone.de X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: bug-gnulib@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Gnulib discussion list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stefan Liebler , bug-gnulib@gnu.org Errors-To: bug-gnulib-bounces+normalperson=yhbt.net@gnu.org Sender: "bug-gnulib" Paul Eggert wrote: > > Thanks for the heads-up. Indeed, what I understand from this bug report is that > > the condition code handling (required by __builtin_add_overflow on many > > platforms) was unreliable before 2017-01-27, i.e. in GCC versions < 7. > > So, gnulib shouldn't make use of it in these GCC versions. > > So the problem is on all platforms, not just s390x? That's my understanding, from the cited . Even if I'm wrong, given that GCC 5 and 6 are in decreasing use, I feel it's better to err on the safe side. Bruno