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: Lisp_Marker size on 32bit systems Date: Fri, 7 Sep 2018 06:45:48 -0700 Organization: UCLA Computer Science Department Message-ID: References: <5a2c709e-aa49-b5b6-3fbe-fb8bd33acb23@cs.ucla.edu> <06d01a4b-9d98-df5b-be8a-aeda449acad7@cs.ucla.edu> <83bm99vijd.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 1536327846 29830 195.159.176.226 (7 Sep 2018 13:44:06 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Fri, 7 Sep 2018 13:44:06 +0000 (UTC) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 Cc: monnier@IRO.UMontreal.CA, emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Sep 07 15:44:02 2018 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 1fyH3I-0007cK-B8 for ged-emacs-devel@m.gmane.org; Fri, 07 Sep 2018 15:44:00 +0200 Original-Received: from localhost ([::1]:38762 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fyH5O-0003x0-Op for ged-emacs-devel@m.gmane.org; Fri, 07 Sep 2018 09:46:10 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:47061) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fyH5E-0003w2-Gn for emacs-devel@gnu.org; Fri, 07 Sep 2018 09:46:01 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fyH5D-0000ZY-KA for emacs-devel@gnu.org; Fri, 07 Sep 2018 09:46:00 -0400 Original-Received: from zimbra.cs.ucla.edu ([131.179.128.68]:51332) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fyH58-00006p-2l; Fri, 07 Sep 2018 09:45:54 -0400 Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 906FE16162E; Fri, 7 Sep 2018 06:45:52 -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 sqvUxIdq4yUh; Fri, 7 Sep 2018 06:45:51 -0700 (PDT) Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id CADCA161634; Fri, 7 Sep 2018 06:45:51 -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 znJia4DKLmNZ; Fri, 7 Sep 2018 06:45:51 -0700 (PDT) Original-Received: from [192.168.1.9] (cpe-23-242-74-103.socal.res.rr.com [23.242.74.103]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id A411E16162E; Fri, 7 Sep 2018 06:45:51 -0700 (PDT) In-Reply-To: <83bm99vijd.fsf@gnu.org> Content-Language: en-US X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x 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:229396 Archived-At: Eli Zaretskii wrote: > The current master fails to build in the x86 32-bit configuration with > wide ints: > > In file included from lisp.h:35:0, > from window.c:25: > ../lib/verify.h:207:21: error: static assertion failed: "verify (header_size == sizeof (union vectorlike_header))" It works for me in that configuration in Fedora 28. I get the following values; what do you get? sizeof (ptrdiff_t) = 4 sizeof (union vectorlike_header) = 4 offsetof (struct Lisp_Vector, contents) = 4 offsetof (struct Lisp_Sub_Char_Table, depth) == 4 offsetof (struct Lisp_Sub_Char_Table, contents) == 12 If you're getting different values, it could be that the fact that the code ever worked at all is just luck. I am using gcc 8.1.1 20180712 (Red Hat 8.1.1-5), and configure this way (because many modules don't work in 32-bit mode): ./configure --with-wide-int CC=gcc -m32 -march=native --enable-gcc-warnings --without-sound --without-dbus --without-file-notification --without-gconf --without-gif --without-gsettings --without-imagemagick --without-rsvg --with-x-toolkit=no --with-modules