From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: David Kastrup Newsgroups: gmane.emacs.devel Subject: Re: Enlarge MAX_ALLOCA? Date: Fri, 20 Jun 2014 10:08:02 +0200 Organization: Organization?!? Message-ID: <87bnto6m1p.fsf@fencepost.gnu.org> References: <83sin0sx98.fsf@gnu.org> <87bnto98ch.fsf@fencepost.gnu.org> <87oaxo7gc4.fsf@fencepost.gnu.org> <83ha3grr8f.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Trace: ger.gmane.org 1403251722 2388 80.91.229.3 (20 Jun 2014 08:08:42 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 20 Jun 2014 08:08:42 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Jun 20 10:08:35 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 1Wxts7-0003ea-Tm for ged-emacs-devel@m.gmane.org; Fri, 20 Jun 2014 10:08:32 +0200 Original-Received: from localhost ([::1]:39451 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wxts7-0004Op-DV for ged-emacs-devel@m.gmane.org; Fri, 20 Jun 2014 04:08:31 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:47743) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wxtry-0004Oa-Pu for emacs-devel@gnu.org; Fri, 20 Jun 2014 04:08:27 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Wxtrt-0000B8-FQ for emacs-devel@gnu.org; Fri, 20 Jun 2014 04:08:22 -0400 Original-Received: from plane.gmane.org ([80.91.229.3]:55700) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wxtrt-0000Ay-8B for emacs-devel@gnu.org; Fri, 20 Jun 2014 04:08:17 -0400 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1Wxtrr-0003MW-LN for emacs-devel@gnu.org; Fri, 20 Jun 2014 10:08:15 +0200 Original-Received: from x2f47c2e.dyn.telefonica.de ([2.244.124.46]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 20 Jun 2014 10:08:15 +0200 Original-Received: from dak by x2f47c2e.dyn.telefonica.de with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 20 Jun 2014 10:08:15 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 26 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: x2f47c2e.dyn.telefonica.de X-Face: 2FEFf>]>q>2iw=B6, xrUubRI>pR&Ml9=ao@P@i)L:\urd*t9M~y1^:+Y]'C0~{mAl`oQuAl \!3KEIp?*w`|bL5qr,H)LFO6Q=qx~iH4DN; i"; /yuIsqbLLCh/!U#X[S~(5eZ41to5f%E@'ELIi$t^ Vc\LWP@J5p^rst0+('>Er0=^1{]M9!p?&:\z]|;&=NP3AhB!B_bi^]Pfkw User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux) Cancel-Lock: sha1:gAwcapU7s+zBox+wXHQmJooA+Dc= X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 80.91.229.3 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:172553 Archived-At: Eli Zaretskii writes: >> From: David Kastrup >> Date: Thu, 19 Jun 2014 23:13:47 +0200 >> Cc: emacs-devel@gnu.org >> >> Stefan Monnier writes: >> >> >> 64kB feels arbitrary. I cannot really think of an architecture where >> >> 64kB would be feasible and 128kB not. ±32kB is a plausible offset for >> >> some architectures. >> > >> > This has nothing to do with machine architectures. >> > It's only related to the OS chosen size of the stack. >> >> It would be "only related to stack size" when there was a strictly >> limited number of alloca allocations in the whole call stack since the >> limit is per alloca, not per Emacs invocation. > > I'm not sure I follow your reasoning. Can you elaborate, please? I don't see that anything I say would register, so I don't see the point in further wasting my time. -- David Kastrup