From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Carsten Bormann Newsgroups: gmane.emacs.bugs Subject: bug#15570: 24.3.50; Null pointer crash in (ns-convert-utf8-nfd-to-nfc "\377") Date: Wed, 9 Oct 2013 20:33:06 +0200 Message-ID: References: <1FC6FC8B-68B0-4D93-8B5C-5665B843B2D0@swipnet.se> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 (Mac OS X Mail 6.6 \(1510\)) Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1381344693 1354 80.91.229.3 (9 Oct 2013 18:51:33 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 9 Oct 2013 18:51:33 +0000 (UTC) Cc: 15570@debbugs.gnu.org To: Jan =?UTF-8?Q?Dj=C3=A4rv?= Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Wed Oct 09 20:51:34 2013 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1VTyr5-0003pd-69 for geb-bug-gnu-emacs@m.gmane.org; Wed, 09 Oct 2013 20:51:31 +0200 Original-Received: from localhost ([::1]:43379 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VTyr4-0004ct-Oq for geb-bug-gnu-emacs@m.gmane.org; Wed, 09 Oct 2013 14:51:30 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:54488) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VTyqk-0004EH-OJ for bug-gnu-emacs@gnu.org; Wed, 09 Oct 2013 14:51:17 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VTyqe-0007gm-5q for bug-gnu-emacs@gnu.org; Wed, 09 Oct 2013 14:51:10 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:58312) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VTyqd-0007e4-W5 for bug-gnu-emacs@gnu.org; Wed, 09 Oct 2013 14:51:04 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1VTyaA-0004Ha-8q for bug-gnu-emacs@gnu.org; Wed, 09 Oct 2013 14:34:03 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Carsten Bormann Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 09 Oct 2013 18:34:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 15570 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 15570-submit@debbugs.gnu.org id=B15570.138134359716370 (code B ref 15570); Wed, 09 Oct 2013 18:34:02 +0000 Original-Received: (at 15570) by debbugs.gnu.org; 9 Oct 2013 18:33:17 +0000 Original-Received: from localhost ([127.0.0.1]:38337 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1VTyZR-0004Fy-3T for submit@debbugs.gnu.org; Wed, 09 Oct 2013 14:33:17 -0400 Original-Received: from mailhost.informatik.uni-bremen.de ([134.102.201.18]:37005 helo=informatik.uni-bremen.de) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1VTyZO-0004Fm-Il for 15570@debbugs.gnu.org; Wed, 09 Oct 2013 14:33:15 -0400 X-Virus-Scanned: amavisd-new at informatik.uni-bremen.de Original-Received: from smtp-fb3.informatik.uni-bremen.de (smtp-fb3.informatik.uni-bremen.de [134.102.224.120]) by informatik.uni-bremen.de (8.14.4/8.14.4) with ESMTP id r99IX8JH006690; Wed, 9 Oct 2013 20:33:08 +0200 (CEST) Original-Received: from [192.168.217.105] (p54891327.dip0.t-ipconnect.de [84.137.19.39]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by smtp-fb3.informatik.uni-bremen.de (Postfix) with ESMTPSA id A7855134; Wed, 9 Oct 2013 20:33:07 +0200 (CEST) In-Reply-To: <1FC6FC8B-68B0-4D93-8B5C-5665B843B2D0@swipnet.se> X-Mailer: Apple Mail (2.1510) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 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-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:79113 Archived-At: On Oct 9, 2013, at 18:31, Jan Dj=E4rv wrote: > The function clearly expects valid UTF-8 as input. Why is tramp = feeding it invalid UTF-8? What is tramp trying to accomplish? What = would be the expected return value on invalid UTF-8? I haven't looked at the details yet (that will be easier once the null = pointer reference is fixed). That needn't stop me from hypothesizing... ns-convert-utf8-nfd-to-nfc is used in places where system output might = contain Apple's slightly crazy not-quite-NFD file names, so that you can = usefully cut and paste them etc. to places that expect the usual = not-quite-NFC. So one should expect a lot of not-really-UTF-8-after-all = input to be fed into this thing. I'm presuming tramp just feeds whatever it got from the remote system = through this to get more useful output e.g. for a directory listing. It probably would be useful to have a robust version of this that just = chokes on nothing. Raising an error on non-UTF-8 input may be a desirable behavior in other = places. (Crashing Emacs never is.) I'm a bit surprised that this bug apparently was around for a number of = years already... Gr=FC=DFe, Carsten