From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Richard Stallman Newsgroups: gmane.emacs.devel Subject: Re: How and when to use GCPRO? Date: Tue, 28 Dec 2010 12:07:02 -0500 Message-ID: References: <4D193E60.8070108@gmail.com> <4D195B6D.2060305@gmail.com> Reply-To: rms@gnu.org NNTP-Posting-Host: lo.gmane.org Content-Type: text/plain; charset=ISO-8859-15 X-Trace: dough.gmane.org 1293557187 9467 80.91.229.12 (28 Dec 2010 17:26:27 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Tue, 28 Dec 2010 17:26:27 +0000 (UTC) Cc: emacs-devel@gnu.org, schwab@linux-m68k.org, monnier@iro.umontreal.ca, sdl.web@gmail.com To: Daniel Colascione Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Dec 28 18:26:22 2010 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1PXdJW-0002Jl-In for ged-emacs-devel@m.gmane.org; Tue, 28 Dec 2010 18:26:22 +0100 Original-Received: from localhost ([127.0.0.1]:50047 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PXdJW-0002iG-4s for ged-emacs-devel@m.gmane.org; Tue, 28 Dec 2010 12:26:22 -0500 Original-Received: from [140.186.70.92] (port=54686 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PXd2r-0007tH-H5 for emacs-devel@gnu.org; Tue, 28 Dec 2010 12:10:24 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PXd0t-0005KA-0V for emacs-devel@gnu.org; Tue, 28 Dec 2010 12:09:08 -0500 Original-Received: from fencepost.gnu.org ([140.186.70.10]:53902) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PXd0s-0005K6-Sp for emacs-devel@gnu.org; Tue, 28 Dec 2010 12:07:06 -0500 Original-Received: from rms by fencepost.gnu.org with local (Exim 4.69) (envelope-from ) id 1PXd0o-00030Q-Cq; Tue, 28 Dec 2010 12:07:02 -0500 In-reply-to: <4D195B6D.2060305@gmail.com> (message from Daniel Colascione on Mon, 27 Dec 2010 19:37:17 -0800) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:134009 Archived-At: There is a simple general rule for which Emacs C functions can GC: those that can directly or indirectly call eval. To make Fcar call eval would be a rather shocking and drastic change. There is no need to take precautions today against the possibility of such a drastic change in the future. -- Richard Stallman President, Free Software Foundation 51 Franklin St Boston MA 02110 USA www.fsf.org, www.gnu.org