From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Paul Eggert Newsgroups: gmane.emacs.devel Subject: Re: Dumper problems and a possible solutions Date: Wed, 25 Jun 2014 16:04:26 -0700 Organization: UCLA Computer Science Department Message-ID: <53AB557A.30104@cs.ucla.edu> References: <20140624171955.GS179@brightrain.aerifal.cx> <53AB0EF8.4090608@yandex.ru> <831tucrguf.fsf@gnu.org> <20140625183241.GW179@brightrain.aerifal.cx> <83wqc4q0xl.fsf@gnu.org> <20140625190333.GZ179@brightrain.aerifal.cx> <20140625202403.GB179@brightrain.aerifal.cx> <20140625220758.GE179@brightrain.aerifal.cx> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1403737504 25751 80.91.229.3 (25 Jun 2014 23:05:04 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 25 Jun 2014 23:05:04 +0000 (UTC) Cc: emacs-devel@gnu.org To: Rich Felker Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Jun 26 01:04:57 2014 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1WzwFM-0007pw-6e for ged-emacs-devel@m.gmane.org; Thu, 26 Jun 2014 01:04:56 +0200 Original-Received: from localhost ([::1]:41445 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WzwFL-0008Ks-8H for ged-emacs-devel@m.gmane.org; Wed, 25 Jun 2014 19:04:55 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:32842) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WzwFB-0008Iw-Hx for emacs-devel@gnu.org; Wed, 25 Jun 2014 19:04:52 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WzwF4-0005ol-3K for emacs-devel@gnu.org; Wed, 25 Jun 2014 19:04:45 -0400 Original-Received: from smtp.cs.ucla.edu ([131.179.128.62]:56866) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WzwF3-0005lX-Td for emacs-devel@gnu.org; Wed, 25 Jun 2014 19:04:38 -0400 Original-Received: from localhost (localhost.localdomain [127.0.0.1]) by smtp.cs.ucla.edu (Postfix) with ESMTP id E1272A60008; Wed, 25 Jun 2014 16:04:30 -0700 (PDT) X-Virus-Scanned: amavisd-new at smtp.cs.ucla.edu Original-Received: from smtp.cs.ucla.edu ([127.0.0.1]) by localhost (smtp.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id X-9cROjOjdzY; Wed, 25 Jun 2014 16:04:30 -0700 (PDT) Original-Received: from [192.168.1.9] (pool-108-0-233-62.lsanca.fios.verizon.net [108.0.233.62]) by smtp.cs.ucla.edu (Postfix) with ESMTPSA id 244DDA60001; Wed, 25 Jun 2014 16:04:30 -0700 (PDT) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 In-Reply-To: <20140625220758.GE179@brightrain.aerifal.cx> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 131.179.128.62 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 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-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:172734 Archived-At: Rich Felker wrote: > this model is also incompatible > with PIE and with most modern systems where malloc may return "high" > addresses, and thereby likely buggy even on the systems it's currently > used on (if any). The model works just fine on a typical modern 32-bit host, so long as you configure --with-wide-int. That's because the 32-bit addresses fit comfortably in the low half of 64-bit integers.