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#30626: 26.0.91; Crash when traversing a `stream-of-directory-files' Date: Tue, 27 Feb 2018 13:21:30 +0200 Message-ID: <6FCF6ACA-4F29-4B6B-BE9D-D7130C6E9495@gnu.org> References: <87inaiss6l.fsf@web.de> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Trace: blaine.gmane.org 1519730412 647 195.159.176.226 (27 Feb 2018 11:20:12 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 27 Feb 2018 11:20:12 +0000 (UTC) User-Agent: K-9 Mail for Android To: 30626@debbugs.gnu.org, michael_heerdegen@web.de Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Feb 27 12:20:08 2018 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 1eqdIm-0008D0-4M for geb-bug-gnu-emacs@m.gmane.org; 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Tue, 27 Feb 2018 06:22:03 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 27 Feb 2018 11:22:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 30626 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: X-Debbugs-Original-To: bug-gnu-emacs@gnu.org, Michael Heerdegen , 30626@debbugs.gnu.org Original-Received: via spool by 30626-submit@debbugs.gnu.org id=B30626.151973051119940 (code B ref 30626); Tue, 27 Feb 2018 11:22:02 +0000 Original-Received: (at 30626) by debbugs.gnu.org; 27 Feb 2018 11:21:51 +0000 Original-Received: from localhost ([127.0.0.1]:34415 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eqdKR-0005BY-Be for submit@debbugs.gnu.org; Tue, 27 Feb 2018 06:21:51 -0500 Original-Received: from eggs.gnu.org ([208.118.235.92]:43695) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eqdKP-0005B9-FE for 30626@debbugs.gnu.org; Tue, 27 Feb 2018 06:21:49 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eqdKJ-0002AA-Hb for 30626@debbugs.gnu.org; Tue, 27 Feb 2018 06:21:44 -0500 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:35957) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eqdKB-00027w-It; Tue, 27 Feb 2018 06:21:35 -0500 Original-Received: from [176.12.189.185] (port=20609 helo=[10.163.207.70]) by fencepost.gnu.org with esmtpsa (TLS1.2:DHE_RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1eqdKA-00009e-3I; Tue, 27 Feb 2018 06:21:35 -0500 In-Reply-To: <87inaiss6l.fsf@web.de> 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:143696 Archived-At: On February 27, 2018 11:22:26 AM GMT+02:00, Michael Heerdegen wrote: >=20 > Hello, >=20 > Traversing a `stream-of-directory-files' over a huge directory > hierarchy > crashes my Emacs=2E >=20 > Here is a recipe: I have a file > "/home/micha/Treasure/today/stream-crash=2Eel" with these contents: >=20 > #+begin_src emacs-lisp > ;; -*- lexical-binding: t -*- >=20 > (require 'stream) >=20 > (seq-doseq (_file (stream-of-directory-files > "/home/micha" t nil t nil > (lambda (file) (and (file-readable-p file) (file-regular-p file))))) > nil) > #+end_src >=20 > Then I >=20 > micha> emacs -Q -L /home/micha/software/elpa/packages/stream\ > -l /home/micha/Treasure/today/stream-crash=2Eel >=20 > and I get a segfault after ~ 1 minute=2E >=20 > This kind of crash only seems to occur when the traversed directory is > sufficiently large=2E I guess it's a stack overflow: that function recurses into subdirectories= =2E To avoid such problems, the function should be rewritten to work by BFS, n= ot DFS=2E