From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Andreas Schwab Newsgroups: gmane.emacs.bugs Subject: bug#27585: segfault when evaluating a file containing only backticks Date: Thu, 06 Jul 2017 17:31:35 +0200 Message-ID: References: <1499235670.28433.1@ssh.steve.org.uk> <83van6n2ty.fsf@gnu.org> <1499280931.14677.1@ssh.steve.org.uk> <83tw2qmzsl.fsf@gnu.org> <83mv8hmw3x.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1499355145 1822 195.159.176.226 (6 Jul 2017 15:32:25 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 6 Jul 2017 15:32:25 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux) Cc: steve@steve.org.uk, 27585@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Jul 06 17:32:20 2017 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1dT8lO-0008TK-FT for geb-bug-gnu-emacs@m.gmane.org; Thu, 06 Jul 2017 17:32:18 +0200 Original-Received: from localhost ([::1]:52018 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dT8lT-0000tR-RB for geb-bug-gnu-emacs@m.gmane.org; Thu, 06 Jul 2017 11:32:23 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:34175) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dT8lB-0000kn-II for bug-gnu-emacs@gnu.org; Thu, 06 Jul 2017 11:32:06 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dT8l8-0003eG-Ea for bug-gnu-emacs@gnu.org; Thu, 06 Jul 2017 11:32:05 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:52642) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1dT8l8-0003e2-Ai for bug-gnu-emacs@gnu.org; Thu, 06 Jul 2017 11:32:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1dT8l8-0006nt-5R for bug-gnu-emacs@gnu.org; Thu, 06 Jul 2017 11:32:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Andreas Schwab Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 06 Jul 2017 15:32:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 27585 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 27585-submit@debbugs.gnu.org id=B27585.149935509826115 (code B ref 27585); Thu, 06 Jul 2017 15:32:02 +0000 Original-Received: (at 27585) by debbugs.gnu.org; 6 Jul 2017 15:31:38 +0000 Original-Received: from localhost ([127.0.0.1]:55318 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dT8kk-0006n9-Cb for submit@debbugs.gnu.org; Thu, 06 Jul 2017 11:31:38 -0400 Original-Received: from mx2.suse.de ([195.135.220.15]:38789 helo=mx1.suse.de) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dT8kj-0006n1-44 for 27585@debbugs.gnu.org; Thu, 06 Jul 2017 11:31:37 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Original-Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id E9245AC37; Thu, 6 Jul 2017 15:31:35 +0000 (UTC) X-Yow: Hmmm.. A hash-singer and a cross-eyed guy were SLEEPING on a deserted island, when... In-Reply-To: <83mv8hmw3x.fsf@gnu.org> (Eli Zaretskii's message of "Thu, 06 Jul 2017 18:19:14 +0300") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 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" Xref: news.gmane.org gmane.emacs.bugs:134271 Archived-At: On Jul 06 2017, Eli Zaretskii wrote: >> From: Andreas Schwab >> Cc: Steve Kemp , 27585@debbugs.gnu.org >> Date: Thu, 06 Jul 2017 08:46:14 +0200 >> >> On Jul 05 2017, Eli Zaretskii wrote: >> >> > You wrote a program that triggers infinite recursion. >> >> This isn't infinite recursion since the input is finite. > > If we want to be pedantically accurate, then no "infinite" recursion > is ever truly infinite, since it will always stop when the system is > shut down, or the power fails, or the world ends, whichever happens > first. This is not a useful way to categorize infinite recursion. In this case, the recursion is always bounded by the size of the input. Andreas. -- Andreas Schwab, SUSE Labs, schwab@suse.de GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7 "And now for something completely different."