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: Concurrency has landed Date: Fri, 23 Dec 2016 21:04:09 -0800 Organization: UCLA Computer Science Department Message-ID: <867d61bc-6f8d-d303-a89b-58b019a3dfbc@cs.ucla.edu> References: <83oa0lgnzx.fsf@gnu.org> <83inqrfzzp.fsf@gnu.org> <83a8c3fxru.fsf@gnu.org> <0bcf38b7-0893-a300-39c3-32da985c5717@cs.ucla.edu> <9b3d4460-dae9-86a4-88d8-61944b485ce1@cs.ucla.edu> <85b5c73e-68be-28ec-328f-b0d4174d13fa@cs.ucla.edu> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable X-Trace: blaine.gmane.org 1482557324 28865 195.159.176.226 (24 Dec 2016 05:28:44 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sat, 24 Dec 2016 05:28:44 +0000 (UTC) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1 Cc: emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Dec 24 06:28:40 2016 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 1cKese-0005lB-Mh for ged-emacs-devel@m.gmane.org; Sat, 24 Dec 2016 06:28:28 +0100 Original-Received: from localhost ([::1]:42301 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cKesj-0003fj-8j for ged-emacs-devel@m.gmane.org; Sat, 24 Dec 2016 00:28:33 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:34401) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cKeVD-0004PL-SM for emacs-devel@gnu.org; Sat, 24 Dec 2016 00:04:16 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cKeVA-0005bQ-Pr for emacs-devel@gnu.org; Sat, 24 Dec 2016 00:04:15 -0500 Original-Received: from zimbra.cs.ucla.edu ([131.179.128.68]:51904) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cKeVA-0005an-Jy for emacs-devel@gnu.org; Sat, 24 Dec 2016 00:04:12 -0500 Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 558101600CB; Fri, 23 Dec 2016 21:04:10 -0800 (PST) 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 fd2cQ96ot8I4; Fri, 23 Dec 2016 21:04:09 -0800 (PST) Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id A1A091600CD; Fri, 23 Dec 2016 21:04:09 -0800 (PST) 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 W8WZ8WlVVHXE; Fri, 23 Dec 2016 21:04:09 -0800 (PST) Original-Received: from [192.168.1.9] (unknown [47.153.178.162]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 84A5B1600CB; Fri, 23 Dec 2016 21:04:09 -0800 (PST) In-Reply-To: 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:210770 Archived-At: Stefan Monnier wrote: > can you show in the code where we do that? Oh, sorry, my memory was wrong. I already removed the code with the probl= em in=20 question, in commit b7f3a3055c92010afde318c1108b02e4424a3bac dated 2016-1= 1-26.=20 This code was in regex.c's EXTEND_BUFFER macro; it was a relic of an old = hack=20 that was removed from glibc and gnulib regex.c years ago, precisely becau= se of=20 (a precursor to) -fcheck-pointer-bounds. The byte stack code does something similar, but does so in a safer way (t= his is=20 in relocate_byte_stack). I plan to remove that too, though (again), since= the=20 byte stack isn't needed any more and slows things down a bit.