From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Paul Eggert Newsgroups: gmane.emacs.devel Subject: Re: Emacs-26 threads problem [win64] Date: Fri, 13 Oct 2017 15:28:40 -0700 Organization: UCLA Computer Science Department Message-ID: <8ad9b8d2-1c9e-2db0-f166-58d08ea8321a@cs.ucla.edu> References: <83h8v7r02e.fsf@gnu.org> <83vajnotik.fsf@gnu.org> <83r2ubosnd.fsf@gnu.org> <83fuaqpzaq.fsf@gnu.org> <837ew2pxx9.fsf@gnu.org> <83efq6khh3.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: blaine.gmane.org 1507933772 20008 195.159.176.226 (13 Oct 2017 22:29:32 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Fri, 13 Oct 2017 22:29:32 +0000 (UTC) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 Cc: emacs-devel@gnu.org To: Eli Zaretskii , Fabrice Popineau Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Oct 14 00:29:26 2017 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1e38SI-0003wU-Ki for ged-emacs-devel@m.gmane.org; Sat, 14 Oct 2017 00:29:22 +0200 Original-Received: from localhost ([::1]:52108 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e38SP-0006nI-OW for ged-emacs-devel@m.gmane.org; Fri, 13 Oct 2017 18:29:29 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:44876) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e38Rm-0006n1-C2 for emacs-devel@gnu.org; Fri, 13 Oct 2017 18:28:51 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e38Rl-0007gk-LZ for emacs-devel@gnu.org; Fri, 13 Oct 2017 18:28:50 -0400 Original-Received: from zimbra.cs.ucla.edu ([131.179.128.68]:53218) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1e38Rh-0007e3-0P; Fri, 13 Oct 2017 18:28:45 -0400 Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id A7D16160E54; Fri, 13 Oct 2017 15:28:41 -0700 (PDT) Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id VEXmVFyjO_AD; Fri, 13 Oct 2017 15:28:40 -0700 (PDT) Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id B1DC1160E57; Fri, 13 Oct 2017 15:28:40 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id xkRAV1m3LOp7; Fri, 13 Oct 2017 15:28:40 -0700 (PDT) Original-Received: from Penguin.CS.UCLA.EDU (Penguin.CS.UCLA.EDU [131.179.64.200]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 970F0160E52; Fri, 13 Oct 2017 15:28:40 -0700 (PDT) In-Reply-To: <83efq6khh3.fsf@gnu.org> Content-Language: en-US X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 131.179.128.68 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 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.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:219468 Archived-At: On 10/13/2017 11:52 AM, Eli Zaretskii wrote: > So it looks like new_thread could be aligned at just 8 bytes, but GCC > assumes for some reason that it's 16-byte aligned, and issues an > instruction that requires such an alignment. It's not a GCC bug. It's a bug in the way that Emacs allocates pseudovectors. We assume that an alignment of 8 is enough, but apparently this is incorrect for the struct thread type under MS-Windows. I'll see if I can squeeze some time free to look into this.