From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Certain numbers of special forms cause changing behaviour on function calls in --batch Date: Sun, 10 Jul 2016 21:02:56 +0300 Message-ID: <83inwde5gv.fsf@gnu.org> References: <8760stvwzp.fsf@web.de> <834m8cvu9p.fsf@gnu.org> <87h9cbpw61.fsf@web.de> <83wpl7v1sg.fsf@gnu.org> <87a8i2dfe3.fsf@web.de> <83poqyvh58.fsf@gnu.org> <87shvu1ixp.fsf@web.de> <8360spvn6i.fsf@gnu.org> <8760sjn5me.fsf@web.de> <871t37n51y.fsf@web.de> <8337nmon4l.fsf@gnu.org> <87mvluomaz.fsf@web.de> <83mvlun6zc.fsf@gnu.org> <83bn25fst6.fsf@gnu.org> <83vb0de91c.fsf@gnu.org> <87r3b12zcg.fsf@linux-m68k.org> <87mvlp2y3c.fsf@linux-m68k.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1468173801 11408 80.91.229.3 (10 Jul 2016 18:03:21 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 10 Jul 2016 18:03:21 +0000 (UTC) Cc: michael_heerdegen@web.de, yasushi.shoji@gmail.com, me@wilfred.me.uk, emacs-devel@gnu.org, npostavs@users.sourceforge.net To: Andreas Schwab Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sun Jul 10 20:03:16 2016 Return-path: Envelope-to: ged-emacs-devel@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 1bMJ4V-0008Jy-Fn for ged-emacs-devel@m.gmane.org; Sun, 10 Jul 2016 20:03:15 +0200 Original-Received: from localhost ([::1]:56295 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bMJ4U-00088J-Gn for ged-emacs-devel@m.gmane.org; Sun, 10 Jul 2016 14:03:14 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:52424) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bMJ4P-00088E-9i for emacs-devel@gnu.org; Sun, 10 Jul 2016 14:03:10 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bMJ4M-0000Zj-5A for emacs-devel@gnu.org; Sun, 10 Jul 2016 14:03:09 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:60150) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bMJ4M-0000Ze-2N; Sun, 10 Jul 2016 14:03:06 -0400 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:3291 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1bMJ4J-0003id-TO; Sun, 10 Jul 2016 14:03:04 -0400 In-reply-to: <87mvlp2y3c.fsf@linux-m68k.org> (message from Andreas Schwab on Sun, 10 Jul 2016 19:37:43 +0200) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:205517 Archived-At: > From: Andreas Schwab > Date: Sun, 10 Jul 2016 19:37:43 +0200 > Cc: michael_heerdegen@web.de, yasushi.shoji@gmail.com, me@wilfred.me.uk, > Noam Postavsky , emacs-devel@gnu.org > > > One of the local variables of Fvertical_motion isn't properly > > initialized. > > This is executing this part from line-move-1: > > 243:18 constant vertical-motion > 244 constant 1 > 245 call 1 > 246 constant 0 > 247 eqlsign > > Thus it is actually it.vpos that is not initialized. Yep, see the proposed patch I sent a few minutes ago. 11.5 years and 3 major versions of GCC to find a bug. Amazing!