From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: "Stephen J. Turnbull" Newsgroups: gmane.emacs.devel Subject: Re: Lisp object that refers to a C struct Date: Thu, 18 Oct 2012 12:43:08 +0900 Message-ID: <87mwzk5ttf.fsf@uwakimon.sk.tsukuba.ac.jp> References: <83ehkz4edw.fsf@gnu.org> <83bog33wdr.fsf@gnu.org> <837gqq49j7.fsf@gnu.org> <83r4ox3frd.fsf@gnu.org> <83ipa92i95.fsf@gnu.org> <83bog03jyf.fsf@gnu.org> <507F2C74.4070107@cs.ucla.edu> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 X-Trace: ger.gmane.org 1350531797 32253 80.91.229.3 (18 Oct 2012 03:43:17 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 18 Oct 2012 03:43:17 +0000 (UTC) Cc: Eli Zaretskii , Paul Eggert , emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Oct 18 05:43:24 2012 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 1TOh10-00082m-UK for ged-emacs-devel@m.gmane.org; Thu, 18 Oct 2012 05:43:23 +0200 Original-Received: from localhost ([::1]:56841 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TOh0t-00072W-Pq for ged-emacs-devel@m.gmane.org; Wed, 17 Oct 2012 23:43:15 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:50241) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TOh0s-00072Q-5O for emacs-devel@gnu.org; Wed, 17 Oct 2012 23:43:14 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TOh0r-0001z2-EU for emacs-devel@gnu.org; Wed, 17 Oct 2012 23:43:14 -0400 Original-Received: from mgmt2.sk.tsukuba.ac.jp ([130.158.97.224]:34734) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TOh0p-0001yi-S6; Wed, 17 Oct 2012 23:43:12 -0400 Original-Received: from uwakimon.sk.tsukuba.ac.jp (uwakimon.sk.tsukuba.ac.jp [130.158.99.156]) by mgmt2.sk.tsukuba.ac.jp (Postfix) with ESMTP id D46B99708E6; Thu, 18 Oct 2012 12:43:08 +0900 (JST) Original-Received: by uwakimon.sk.tsukuba.ac.jp (Postfix, from userid 1000) id 9706C1A308D; Thu, 18 Oct 2012 12:43:08 +0900 (JST) In-Reply-To: X-Mailer: VM undefined under 21.5 (beta32) "habanero" b0d40183ac79 XEmacs Lucid (x86_64-unknown-linux) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-Received-From: 130.158.97.224 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:154400 Archived-At: Stefan Monnier writes: > > Also, suppose someone makes up a random integer > > and then passes it as the watch descriptor -- > > wouldn't Emacs dump core? > > That's what I was getting at. I inferred that Eli is already checking it against a list of active watches (ie, will "fail safe"); otherwise, you could dump core on a double free anyway.