From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Po Lu Newsgroups: gmane.emacs.devel Subject: Re: HAVE_FAST_UNALIGNED_ACCESS Date: Sun, 02 Apr 2023 08:50:22 +0800 Message-ID: <87edp3rttd.fsf@yahoo.com> References: <87sfdmlgzx.fsf@gmail.com> <94d3de92c50a96d9172f88462bf3bc9c2792600c.camel@gmail.com> <83mt3s244o.fsf@gnu.org> <875yagtopn.fsf@yahoo.com> <838rfc17ja.fsf@gnu.org> <871ql4t8ph.fsf@yahoo.com> <83wn2wyuli.fsf@gnu.org> <63A29442-4C0C-4C3C-B40E-4A3DB91E3009@gmail.com> <83lejcypyw.fsf@gnu.org> <87wn2wrmgc.fsf@yahoo.com> <83bkk7zvxl.fsf@gnu.org> <87lejbpxkm.fsf@aarsen.me> <83zg7rybfo.fsf@gnu.org> <86h6tzr4b2.fsf@aarsen.me> <83jzyvy3l3.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="19764"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Cc: Arsen =?utf-8?Q?Arsenovi=C4=87?= , mattias.engdegard@gmail.com, vibhavp@gmail.com, rpluim@gmail.com, emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sun Apr 02 02:50:58 2023 Return-path: Envelope-to: ged-emacs-devel@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 1pilvt-0004t9-GG for ged-emacs-devel@m.gmane-mx.org; Sun, 02 Apr 2023 02:50:57 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pilvb-0008Eb-Ka; Sat, 01 Apr 2023 20:50:39 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pilvY-0008CB-Nj for emacs-devel@gnu.org; Sat, 01 Apr 2023 20:50:36 -0400 Original-Received: from sonic306-22.consmr.mail.ne1.yahoo.com ([66.163.189.84]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1pilvX-0000pu-1D for emacs-devel@gnu.org; Sat, 01 Apr 2023 20:50:36 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1680396632; bh=Mla/vfwxxyj0fn3sMlRhBZSVc03xPdkpzd67rdG9bTw=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From:Subject:Reply-To; b=eD5TV76CM9SZwe+iqU7xPEytbbLsB3P+hpNlB473U/arg+BPP00mbAupCBvGjq1v9H38JON8BzRnth8vunJ0KxRm0ggsrqzn2kYLDrEpMZK3eDCNPY65tqM9uogqNlcWSa+caETQSg6cZ4EZYwoN5To1jPLKPy3EB+eMgf2DylTNwtUQC52TLbotS1gmac30x8xV2BkpdkJ7dB/Ed2Y4cnlQ8TV1Br1dxWXX337RebjDAt52cq3/l9xnLCYQsNEkzyDNwocw4NJWw/WqF/En+gFAdLu1hQQPkf9TdaxzjvCZq+2ieDpHITNm4ssOQJnMQLHaOYSb3BAOjKiFNv/Mmw== X-SONIC-DKIM-SIGN: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1680396633; bh=hw2PJ1ALTjuJpZVyT/l0S4BKOcA1pmvH0qJasXFAsCh=; h=X-Sonic-MF:From:To:Subject:Date:From:Subject; b=KV32eiudF8wUPcpUHQ3Cb0tGmnH74Wg833UWlV0q+1K1WtfQCsyCMTn0XcOe7juX0frart6pjTFo1undo5pJdwbxCTZLAfjLBbtIKiDB4fkMEHKYVRGYzCtgETsSQyYeQx6hOYL1vrsbR6M1b95AuB8UwKVtboN+EfL50c4jQMrQnC2W2oB7+fa4LG1rNYdELfpRXkWvBf2dxPoSi2lCoE1GxAvlMC04M/f10zKhjXaiz7HSjqv81LZgX3bO1gWlrUHimF/umP4M+nET7QZbh7u/kj5FFR3GSiFCe1Azq8AJYN1S4o60QYiWRj1AimYU6JuUdpAcvYuLDHnaGbDFbQ== X-YMail-OSG: phE1_68VM1lP_F2hN2UHF4j0WG4PLriQtB_77mRcKCM6RLtG192TUox4N27.VDP JOGMYRR70ZKTFaOGbln2YUSIbfoTJgKVETXtF6Xg49Co7kJ6BBvvQ1BHACqwgyv3k1xtFlelWDLA hx3Oj_lk_P0iG4m0WmxfPBj9x7xS1OtLqQDH9NBfat65sE.RIBsqG0d57EFc5EG2nKSit_DxmHu7 ZO_xGINiKdyZNx1A7K.jCcwoEyCHtKSV8Z9H_SdjHMW8hge97vxsJpwmjl_UYLez2bJnspzIs7Mv TrrP3Etui7miBurq1cj6lPL.YUW9AZzVT2_zHsHPnOzlb2lMv481lZ2vly6SJ1g2EBQ_tp8DfzCQ LCaikb2OyuTlLPZnv4rOuGdvOtqp9OSdt4GFOZ1JpQnwk61_336p7_v8dhvwISEciN6PpjUmi8zs VV1N32RoMdDRwhkuB_bu7wNTyqe.UtAL90Nr7CzhoUiDuzr.VEi6wpGbvQ0qg0JAQigbTZFPTtTQ axdU0Il6AHnKXlApEd97nSzBr4Yv6aCb2gAw0cC5dGLhpWpyYtue4.oTqpxfcb3WxDwypmI5ihH3 aH6gyzGKv_T5io5xgDZND_6QpsqvUU9_wwtOFln95jCO2u2HxnXFOjjnZK4MtteQRdlxBhQ6K8oq ufdCezzSSt7JlNDZCE2KAvkreA6MGnCPeISl8pkwvW.CltAxqJ80DN.Zp3uYr9ghLCqR3jvlwYsX HM6SBoTy62ylgmIzJIKVJdb0aJRPoVWkdidscrAmBr_wzSs9g8isvdTUQ4JuhgCneRDP2Vx4n8EZ 1jkaKPhZuQ6Bd8LrelalQI1nYIgFBWM502cEMLxwEU X-Sonic-MF: X-Sonic-ID: da3e9cbe-890c-41ec-be39-f8918b64ad87 Original-Received: from sonic.gate.mail.ne1.yahoo.com by sonic306.consmr.mail.ne1.yahoo.com with HTTP; Sun, 2 Apr 2023 00:50:32 +0000 Original-Received: by hermes--production-sg3-6d6fb994f6-94jgf (Yahoo Inc. Hermes SMTP Server) with ESMTPA ID 6707b405842ce1d601057096ffa576a4; Sun, 02 Apr 2023 00:50:28 +0000 (UTC) In-Reply-To: <83jzyvy3l3.fsf@gnu.org> (Eli Zaretskii's message of "Sat, 01 Apr 2023 19:22:48 +0300") X-Mailer: WebService/1.1.21284 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Received-SPF: pass client-ip=66.163.189.84; envelope-from=luangruo@yahoo.com; helo=sonic306-22.consmr.mail.ne1.yahoo.com 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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:305024 Archived-At: Eli Zaretskii writes: >> From: Arsen Arsenovi=C4=87 >> Cc: luangruo@yahoo.com, mattias.engdegard@gmail.com, vibhavp@gmail.com, >> rpluim@gmail.com, emacs-devel@gnu.org >> Date: Sat, 01 Apr 2023 17:22:48 +0200 >>=20 >> I understand why you're arguing this, and I have to thank you for it - >> such efforts keep Emacs as stable as it is - but this feels like an >> example that is too trivial to apply such judgment to, hence my >> position. I am certain that you have an understanding of the issue at >> hand, I'm only trying to provide a solution that's safe enough for 29. > > Among other reasons, we'd need a real-life case where this code fails > to test any solutions. -fsanitize=3Dundefined is intended to detect these ``real-life cases'' before they occur. We are talking about code that is less than three years old, in the context of a procedure that has not been changed much since the days of the Unicode branch! How can you be so certain of its safety?