From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Andrea Corallo Newsgroups: gmane.emacs.bugs Subject: bug#57789: Emacs 28.1 clone build with native compilation crashes on s390x Date: Fri, 16 Sep 2022 08:43:37 +0000 Message-ID: References: <87h71aix5r.fsf@trouble.defaultvalue.org> <83tu5a3cdw.fsf@gnu.org> <87pmfxhfoz.fsf@trouble.defaultvalue.org> <83wna5yuws.fsf@gnu.org> <020828f9-c137-e584-89a5-f1ad0c38df9c@cs.ucla.edu> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="21113"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: 57789@debbugs.gnu.org, Eli Zaretskii , Rob Browning To: Paul Eggert Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Sep 16 10:44:36 2022 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1oZ6xg-0005IH-0A for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 16 Sep 2022 10:44:36 +0200 Original-Received: from localhost ([::1]:42600 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oZ6xe-0001w4-W2 for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 16 Sep 2022 04:44:35 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:36500) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oZ6xA-0001vC-8r for bug-gnu-emacs@gnu.org; Fri, 16 Sep 2022 04:44:04 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:42529) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oZ6x9-0004LQ-Sn for bug-gnu-emacs@gnu.org; Fri, 16 Sep 2022 04:44:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1oZ6x8-0005Ol-E2 for bug-gnu-emacs@gnu.org; Fri, 16 Sep 2022 04:44:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Andrea Corallo Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 16 Sep 2022 08:44:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 57789 X-GNU-PR-Package: emacs Original-Received: via spool by 57789-submit@debbugs.gnu.org id=B57789.166331782120717 (code B ref 57789); Fri, 16 Sep 2022 08:44:02 +0000 Original-Received: (at 57789) by debbugs.gnu.org; 16 Sep 2022 08:43:41 +0000 Original-Received: from localhost ([127.0.0.1]:41607 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oZ6wn-0005O5-KE for submit@debbugs.gnu.org; Fri, 16 Sep 2022 04:43:41 -0400 Original-Received: from mx.sdf.org ([205.166.94.24]:58407) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oZ6wl-0005Nx-9R for 57789@debbugs.gnu.org; Fri, 16 Sep 2022 04:43:39 -0400 Original-Received: from ma.sdf.org (ma.sdf.org [205.166.94.33]) by mx.sdf.org (8.15.2/8.14.5) with ESMTPS id 28G8hbp5000340 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits) verified NO); Fri, 16 Sep 2022 08:43:38 GMT In-Reply-To: <020828f9-c137-e584-89a5-f1ad0c38df9c@cs.ucla.edu> (Paul Eggert's message of "Thu, 15 Sep 2022 09:51:54 -0500") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:242706 Archived-At: Paul Eggert writes: > On 9/15/22 02:10, Eli Zaretskii wrote: >>> Of course that's not remotely conclusive, but if all of the C code >>> wasn't written with strict-aliasing in mind, then I wondered if it might >>> make sense to consider adding -fno-strict-aliasing as a default option. >> I don't know enough about this. Perhaps Andrea or Paul could comment. >> > Throwing -fno-strict-aliasing in the mix is a bit like throwing -O1 > into the mix. I'm not surprised it would cause a Heisenbug to vanish; > it doesn't mean strict aliasing is the problem. Hi Paul, totally agree with you. The fact that even -g has an impact here clearly shows that initial conditions are not necessary directly connected with the final symptom we observe. Best Regards Andrea