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#18438: 24.4.50; assertion failed in bidi.c Date: Fri, 10 Oct 2014 18:12:48 +0300 Message-ID: <83tx3c9cwf.fsf@gnu.org> References: <4745242cd3e424a6c4d5db0e8d3e33d0@amuri.net> <83h9zrlzc8.fsf@gnu.org> <54297FDB.6090606@cornell.edu> <837g0mmkf3.fsf@gnu.org> <6b19fab333f3d362ae61b30b299d7206@amuri.net> <83iok5ku74.fsf@gnu.org> <88ccbe34bf58322ae4b2a5657390c041@amuri.net> <83ppe1itu9.fsf@gnu.org> <837g08bdcy.fsf@gnu.org> <5437E50A.20108@cornell.edu> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1412954066 25314 80.91.229.3 (10 Oct 2014 15:14:26 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 10 Oct 2014 15:14:26 +0000 (UTC) Cc: 18438@debbugs.gnu.org, aidalgol@amuri.net To: Ken Brown Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Oct 10 17:14:19 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 1XcbtZ-0005qE-Ab for geb-bug-gnu-emacs@m.gmane.org; Fri, 10 Oct 2014 17:14:17 +0200 Original-Received: from localhost ([::1]:48926 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XcbtY-0008CG-TT for geb-bug-gnu-emacs@m.gmane.org; Fri, 10 Oct 2014 11:14:16 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:52453) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XcbtQ-0008BG-Ff for bug-gnu-emacs@gnu.org; Fri, 10 Oct 2014 11:14:13 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XcbtK-0007fV-TR for bug-gnu-emacs@gnu.org; Fri, 10 Oct 2014 11:14:08 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:48677) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XcbtK-0007fR-R9 for bug-gnu-emacs@gnu.org; Fri, 10 Oct 2014 11:14:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1XcbtK-00047e-7X for bug-gnu-emacs@gnu.org; Fri, 10 Oct 2014 11:14:02 -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, 10 Oct 2014 15:14:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 18438 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: moreinfo Original-Received: via spool by 18438-submit@debbugs.gnu.org id=B18438.141295398515764 (code B ref 18438); Fri, 10 Oct 2014 15:14:02 +0000 Original-Received: (at 18438) by debbugs.gnu.org; 10 Oct 2014 15:13:05 +0000 Original-Received: from localhost ([127.0.0.1]:40238 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XcbsO-00046C-O1 for submit@debbugs.gnu.org; Fri, 10 Oct 2014 11:13:05 -0400 Original-Received: from mtaout24.012.net.il ([80.179.55.180]:48250) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1XcbsH-00045g-CX for 18438@debbugs.gnu.org; Fri, 10 Oct 2014 11:13:03 -0400 Original-Received: from conversion-daemon.mtaout24.012.net.il by mtaout24.012.net.il (HyperSendmail v2007.08) id <0ND800500HUUTT00@mtaout24.012.net.il> for 18438@debbugs.gnu.org; Fri, 10 Oct 2014 18:06:43 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by mtaout24.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0ND8002NCHZ71T30@mtaout24.012.net.il>; Fri, 10 Oct 2014 18:06:43 +0300 (IDT) In-reply-to: <5437E50A.20108@cornell.edu> 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:94386 > Date: Fri, 10 Oct 2014 09:54:18 -0400 > From: Ken Brown > CC: 18438@debbugs.gnu.org > > It works: Thanks. Although I have a question to x86_64 experts here: > 0x00000001004fc42b <+8>: mov %ecx,0x10(%rbp) > 0x00000001004fc42e <+11>: mov 0x10(%rbp),%eax > 0x00000001004fc431 <+14>: mov %rax,-0x8(%rbp) Do these 3 instructions ensure that the MSB 32 bits of RAX (and therefore the place where the result is stored at RBP+0x08) are zeroed out? > Do you have a new theory that this is testing? Something vague about the upper 32 bits of the 64-bit registers. (Yes, I'm desperate.)