From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#24751: 26.0.50; Regex stack overflow not detected properly (gets "Variable binding depth exceeds max-specpdl-size") Date: Sat, 19 Nov 2016 12:02:14 +0200 Message-ID: <83lgwfbxeh.fsf@gnu.org> References: <87twc6tl0i.fsf@users.sourceforge.net> <83h97nlknj.fsf@gnu.org> <87mvhdoh4q.fsf@users.sourceforge.net> <83zilcipcr.fsf@gnu.org> <87a8d4lyzo.fsf@users.sourceforge.net> <83a8d3cq9s.fsf@gnu.org> <87wpg5l9st.fsf@users.sourceforge.net> <83d1hwhgdi.fsf@gnu.org> <87r36ckzca.fsf@users.sourceforge.net> <83polvfl3h.fsf@gnu.org> <87oa1fknx9.fsf@users.sourceforge.net> <83y40idqm3.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1479549793 13564 195.159.176.226 (19 Nov 2016 10:03:13 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sat, 19 Nov 2016 10:03:13 +0000 (UTC) Cc: 24751@debbugs.gnu.org To: npostavs@users.sourceforge.net Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Nov 19 11:03:08 2016 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 1c82UG-0002Wr-KN for geb-bug-gnu-emacs@m.gmane.org; Sat, 19 Nov 2016 11:03:08 +0100 Original-Received: from localhost ([::1]:40709 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c82UJ-0007YZ-Vw for geb-bug-gnu-emacs@m.gmane.org; Sat, 19 Nov 2016 05:03:12 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:55408) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c82UD-0007YI-OW for bug-gnu-emacs@gnu.org; Sat, 19 Nov 2016 05:03:06 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c82UA-0007GG-Mv for bug-gnu-emacs@gnu.org; Sat, 19 Nov 2016 05:03:05 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:47282) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1c82UA-0007GB-KB for bug-gnu-emacs@gnu.org; Sat, 19 Nov 2016 05:03:02 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1c82UA-0003CL-A3 for bug-gnu-emacs@gnu.org; Sat, 19 Nov 2016 05:03:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 19 Nov 2016 10:03:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 24751 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 24751-submit@debbugs.gnu.org id=B24751.147954973812237 (code B ref 24751); Sat, 19 Nov 2016 10:03:02 +0000 Original-Received: (at 24751) by debbugs.gnu.org; 19 Nov 2016 10:02:18 +0000 Original-Received: from localhost ([127.0.0.1]:34448 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1c82TS-0003BI-15 for submit@debbugs.gnu.org; Sat, 19 Nov 2016 05:02:18 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:36070) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1c82TQ-0003B5-QT for 24751@debbugs.gnu.org; Sat, 19 Nov 2016 05:02:16 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c82TI-00076t-Ip for 24751@debbugs.gnu.org; Sat, 19 Nov 2016 05:02:11 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:39290) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c82TI-00076o-GP; Sat, 19 Nov 2016 05:02:08 -0500 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:3637 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1c82TH-0005Nq-DW; Sat, 19 Nov 2016 05:02:07 -0500 In-reply-to: <83y40idqm3.fsf@gnu.org> (message from Eli Zaretskii on Thu, 17 Nov 2016 18:21:24 +0200) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] 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:125861 Archived-At: One other comment: the value of 'extra' in emacs.c looks too small to me. If we want to safely allocate the failure stack off the run-time C stack, we should make 'extra' large enough to cover a typical GC, which can take as many as 30K stack frames. So I'd enlarge 'extra' to be something like 1500000.