From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Dmitry Antipov Newsgroups: gmane.emacs.bugs Subject: bug#18410: Use SAFE_ALLOCA etc. to avoid unbounded stack allocation. Date: Mon, 08 Sep 2014 11:26:05 +0400 Message-ID: <540D5A0D.1070607@yandex.ru> References: <5409536B.5090201@cs.ucla.edu> <540C0741.8090900@cs.ucla.edu> <83bnqrcq7u.fsf@gnu.org> <540CC106.8040705@cs.ucla.edu> <540D1699.2030903@cs.ucla.edu> 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 1410161247 8402 80.91.229.3 (8 Sep 2014 07:27:27 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 8 Sep 2014 07:27:27 +0000 (UTC) Cc: 18410@debbugs.gnu.org To: Paul Eggert , Stefan Monnier Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Sep 08 09:27:20 2014 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1XQtM8-0003RS-IA for geb-bug-gnu-emacs@m.gmane.org; Mon, 08 Sep 2014 09:27:20 +0200 Original-Received: from localhost ([::1]:41057 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XQtM8-0002SD-21 for geb-bug-gnu-emacs@m.gmane.org; Mon, 08 Sep 2014 03:27:20 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:49656) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XQtLx-0002Qt-I5 for bug-gnu-emacs@gnu.org; Mon, 08 Sep 2014 03:27:16 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XQtLq-0004q1-HY for bug-gnu-emacs@gnu.org; Mon, 08 Sep 2014 03:27:09 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:41621) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XQtLq-0004pv-B9 for bug-gnu-emacs@gnu.org; Mon, 08 Sep 2014 03:27:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1XQtLp-0001yt-Om for bug-gnu-emacs@gnu.org; Mon, 08 Sep 2014 03:27:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Dmitry Antipov Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 08 Sep 2014 07:27:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 18410 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: patch Original-Received: via spool by 18410-submit@debbugs.gnu.org id=B18410.14101611807560 (code B ref 18410); Mon, 08 Sep 2014 07:27:01 +0000 Original-Received: (at 18410) by debbugs.gnu.org; 8 Sep 2014 07:26:20 +0000 Original-Received: from localhost ([127.0.0.1]:33185 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XQtL9-0001xr-ID for submit@debbugs.gnu.org; Mon, 08 Sep 2014 03:26:19 -0400 Original-Received: from forward3h.cmail.yandex.net ([87.250.230.18]:41433) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XQtL6-0001xa-Go for 18410@debbugs.gnu.org; Mon, 08 Sep 2014 03:26:18 -0400 Original-Received: from smtp2o.mail.yandex.net (smtp2o.mail.yandex.net [37.140.190.27]) by forward3h.cmail.yandex.net (Yandex) with ESMTP id 365CC14A1; Mon, 8 Sep 2014 11:26:09 +0400 (MSK) Original-Received: from smtp2o.mail.yandex.net (localhost [127.0.0.1]) by smtp2o.mail.yandex.net (Yandex) with ESMTP id C8F2136A2972; Mon, 8 Sep 2014 11:26:08 +0400 (MSK) Original-Received: from unknown (unknown [37.139.80.10]) by smtp2o.mail.yandex.net (nwsmtp/Yandex) with ESMTPSA id wh4SOaC6sN-Q7riY5uf; Mon, 8 Sep 2014 11:26:07 +0400 (using TLSv1.2 with cipher AES128-SHA (128/128 bits)) (Client certificate not present) X-Yandex-Uniq: 1de7c0bc-08e2-4ebf-8063-34894d343fad DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex.ru; s=mail; t=1410161168; bh=25hEGsEGBTJroDgDfLUxnEYszb6CbqTyQM6qHwLUzZ8=; h=Message-ID:Date:From:User-Agent:MIME-Version:To:CC:Subject: References:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=mcPmZtRCgzdcmRpAdSREI3W2oM0gsOsvfS5wNBska6foh8dpUCPJ+6xvCxBKFkKJz 0ylfbcid6VDOO5Rpd/8MdMhotSrmm6oOawna68LN6oilN11LcITv4vCOv5ne+XV+pr ObWPyzpfIt9Y03pdAJpX/+Xb5Aq4D/0gE3TK9tNw= Authentication-Results: smtp2o.mail.yandex.net; dkim=pass header.i=@yandex.ru User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.1.0 In-Reply-To: <540D1699.2030903@cs.ucla.edu> X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:93140 Archived-At: On 09/08/2014 06:38 AM, Paul Eggert wrote: > If I understand things correctly, Dmitry's recent stack-overflow changes > don't affect this, as they don't deal with the guard-page region size. Yes. Guard-page approach has an unsolvable problem with dynamically adjusted stack size (prlimit on GNU/Linux) - you just don't know where the guard page should be, and there is no OS-level capability to notify an application about stack size change. Dmitry