From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#18610: 24.4.50; Specific file causing emacs to segfault upon opening Date: Fri, 03 Oct 2014 19:35:35 +0300 Message-ID: <8338b5i014.fsf@gnu.org> References: <87eguqbk5m.fsf@gmail.com> <87iok2iio2.fsf@geodiff-mac3.ulb.ac.be> <83egupin8y.fsf@gnu.org> <542E86E4.2030205@yandex.ru> <83a95dibtt.fsf@gnu.org> <837g0hiaza.fsf@gnu.org> <87egup9oac.fsf@igel.home> <834mvli2xu.fsf@gnu.org> <87a95d9m4z.fsf@igel.home> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1412354186 23673 80.91.229.3 (3 Oct 2014 16:36:26 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 3 Oct 2014 16:36:26 +0000 (UTC) Cc: dmantipov@yandex.ru, maden.ldm@gmail.com, 18610@debbugs.gnu.org To: Andreas Schwab Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Oct 03 18:36:18 2014 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 1Xa5q5-0006xQ-DO for geb-bug-gnu-emacs@m.gmane.org; Fri, 03 Oct 2014 18:36:17 +0200 Original-Received: from localhost ([::1]:40182 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Xa5q5-0005zI-1g for geb-bug-gnu-emacs@m.gmane.org; Fri, 03 Oct 2014 12:36:17 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:39016) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Xa5px-0005z4-Pd for bug-gnu-emacs@gnu.org; Fri, 03 Oct 2014 12:36:14 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Xa5pq-0002he-Ew for bug-gnu-emacs@gnu.org; Fri, 03 Oct 2014 12:36:09 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:40692) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Xa5pq-0002hN-Be for bug-gnu-emacs@gnu.org; Fri, 03 Oct 2014 12:36:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1Xa5pp-0007A3-Og for bug-gnu-emacs@gnu.org; Fri, 03 Oct 2014 12:36:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 03 Oct 2014 16:36:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 18610 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 18610-submit@debbugs.gnu.org id=B18610.141235414427463 (code B ref 18610); Fri, 03 Oct 2014 16:36:01 +0000 Original-Received: (at 18610) by debbugs.gnu.org; 3 Oct 2014 16:35:44 +0000 Original-Received: from localhost ([127.0.0.1]:60489 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Xa5pW-00078m-35 for submit@debbugs.gnu.org; Fri, 03 Oct 2014 12:35:44 -0400 Original-Received: from mtaout20.012.net.il ([80.179.55.166]:65473) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Xa5pQ-00078L-Lp for 18610@debbugs.gnu.org; Fri, 03 Oct 2014 12:35:39 -0400 Original-Received: from conversion-daemon.a-mtaout20.012.net.il by a-mtaout20.012.net.il (HyperSendmail v2007.08) id <0NCV00600MD09A00@a-mtaout20.012.net.il> for 18610@debbugs.gnu.org; Fri, 03 Oct 2014 19:35:34 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout20.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0NCV0060BNFADZ10@a-mtaout20.012.net.il>; Fri, 03 Oct 2014 19:35:34 +0300 (IDT) In-reply-to: <87a95d9m4z.fsf@igel.home> X-012-Sender: halo1@inter.net.il 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:94099 Archived-At: > From: Andreas Schwab > Cc: handa@gnu.org, dmantipov@yandex.ru, maden.ldm@gmail.com, 18610@debbugs.gnu.org > Date: Fri, 03 Oct 2014 18:02:52 +0200 > > Eli Zaretskii writes: > > >> From: Andreas Schwab > >> Cc: Kenichi Handa , dmantipov@yandex.ru, maden.ldm@gmail.com, 18610@debbugs.gnu.org > >> Date: Fri, 03 Oct 2014 17:16:27 +0200 > >> > >> Eli Zaretskii writes: > >> > >> > Btw, there's one more issue that bothers me. In ONE_MORE_BYTE we have > >> > this: > >> > > >> > c = *src++; \ > >> > if (multibytep && (c & 0x80)) \ > >> > { \ > >> > if ((c & 0xFE) == 0xC0) \ > >> > c = ((c & 1) << 6) | *src++; \ > >> > else \ > >> > { \ > >> > src--; \ > >> > c = - string_char (src, &src, NULL); \ > >> > record_conversion_result \ > >> > (coding, CODING_RESULT_INVALID_SRC); \ > >> > } \ > >> > } \ > >> > > >> > If 'src' is a signed type > >> > >> It never is. > > > > You are right. But c nevertheless does get assigned a negative value > > when the byte at src is beyond 127, at least according to what GDB > > shows me. > > Exactly here: > c = - string_char (src, &src, NULL); No, I meant here: c = *src++; \