From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Richard Stallman Newsgroups: gmane.emacs.devel Subject: Re: When should ralloc.c be used? (WAS: bug#24358) Date: Wed, 26 Oct 2016 21:25:53 -0400 Message-ID: References: <87twe6sx2g.fsf@users.sourceforge.net> <87eg51ng4r.fsf_-_@users.sourceforge.net> <87k2djwumn.fsf@users.sourceforge.net> <83h98nidvd.fsf@gnu.org> <87eg3rvtsf.fsf@users.sourceforge.net> <83k2dihpm9.fsf@gnu.org> <8760p2wzgj.fsf@users.sourceforge.net> <838ttyhhzu.fsf@gnu.org> <871szqwu51.fsf@users.sourceforge.net> <831szqhbc2.fsf@gnu.org> <87d1itt79z.fsf_-_@users.sourceforge.net> <7baa18d4-2b09-caa8-005e-29008a383ad1@cs.ucla.edu> <83mvhwrgd5.fsf@gnu.org> <8539f38f-9a11-44c3-4de7-bb974c96206c@cs.ucla.edu> <83d1iq5ib1.fsf@gnu.org> <83r3753c8j.fsf@gnu.org> <20161025190045.1b1d9e86@jabberwock.cb.piermont.com> Reply-To: rms@gnu.org NNTP-Posting-Host: blaine.gmane.org Content-Type: text/plain; charset=Utf-8 X-Trace: blaine.gmane.org 1477531594 27910 195.159.176.226 (27 Oct 2016 01:26:34 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 27 Oct 2016 01:26:34 +0000 (UTC) Cc: npostavs@users.sourceforge.net, eliz@gnu.org, eggert@cs.ucla.edu, emacs-devel@gnu.org To: "Perry E. Metzger" Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Oct 27 03:26:30 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 1bzZSX-0005kS-E5 for ged-emacs-devel@m.gmane.org; Thu, 27 Oct 2016 03:26:21 +0200 Original-Received: from localhost ([::1]:38401 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bzZSZ-0008IQ-Rd for ged-emacs-devel@m.gmane.org; Wed, 26 Oct 2016 21:26:23 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:49738) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bzZSH-000896-4B for emacs-devel@gnu.org; Wed, 26 Oct 2016 21:26:06 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bzZSG-0001I9-1Z for emacs-devel@gnu.org; Wed, 26 Oct 2016 21:26:05 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:45649) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bzZS6-00018F-Ar; Wed, 26 Oct 2016 21:25:54 -0400 Original-Received: from rms by fencepost.gnu.org with local (Exim 4.82) (envelope-from ) id 1bzZS5-00014n-Gm; Wed, 26 Oct 2016 21:25:53 -0400 In-reply-to: <20161025190045.1b1d9e86@jabberwock.cb.piermont.com> (perry@piermont.com) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e 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:208863 Archived-At: [[[ To any NSA and FBI agents reading my email: please consider ]]] [[[ whether defending the US Constitution against all enemies, ]]] [[[ foreign or domestic, requires you to follow Snowden's example. ]]] > Could this be found by doing a debugging build where malloc > aborts in the conditions where it can't be called directly or > indirectly? We could make the functions that create pointers into buffers also increment a global counter when they do that, and decrement the counter when done. malloc would abort if the counter is nonzero. The hard part would be arranging to reset the counter to zero when there is a nonlocal exit out of such a region. -- Dr Richard Stallman President, Free Software Foundation (gnu.org, fsf.org) Internet Hall-of-Famer (internethalloffame.org) Skype: No way! See stallman.org/skype.html.