From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Dan Nicolaescu Newsgroups: gmane.emacs.bugs Subject: bug#9948: valgrind warning: Conditional jump or move depends on uninitialised value(s) in redisplay_window Date: Fri, 04 Nov 2011 09:05:51 -0400 Message-ID: References: <83y5vwlujs.fsf@gnu.org> <83vcr0l0lw.fsf@gnu.org> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: dough.gmane.org 1320412002 22973 80.91.229.12 (4 Nov 2011 13:06:42 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Fri, 4 Nov 2011 13:06:42 +0000 (UTC) Cc: 9948@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Nov 04 14:06:38 2011 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([140.186.70.17]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1RMJTh-0000mw-SW for geb-bug-gnu-emacs@m.gmane.org; Fri, 04 Nov 2011 14:06:38 +0100 Original-Received: from localhost ([::1]:60648 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RMJTh-00007j-CR for geb-bug-gnu-emacs@m.gmane.org; Fri, 04 Nov 2011 09:06:37 -0400 Original-Received: from eggs.gnu.org ([140.186.70.92]:46432) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RMJTd-00004x-Iy for bug-gnu-emacs@gnu.org; Fri, 04 Nov 2011 09:06:34 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1RMJTX-0007EE-TF for bug-gnu-emacs@gnu.org; Fri, 04 Nov 2011 09:06:33 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:49362) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RMJTX-0007EA-QU for bug-gnu-emacs@gnu.org; Fri, 04 Nov 2011 09:06:27 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.69) (envelope-from ) id 1RMJW1-0001Zu-Qq for bug-gnu-emacs@gnu.org; Fri, 04 Nov 2011 09:09:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Dan Nicolaescu Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 04 Nov 2011 13:09:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 9948 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 9948-submit@debbugs.gnu.org id=B9948.13204121086017 (code B ref 9948); Fri, 04 Nov 2011 13:09:01 +0000 Original-Received: (at 9948) by debbugs.gnu.org; 4 Nov 2011 13:08:28 +0000 Original-Received: from localhost ([127.0.0.1] helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1RMJVU-0001Yz-6C for submit@debbugs.gnu.org; Fri, 04 Nov 2011 09:08:28 -0400 Original-Received: from fencepost.gnu.org ([140.186.70.10]) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1RMJVS-0001Yt-5y for 9948@debbugs.gnu.org; Fri, 04 Nov 2011 09:08:26 -0400 Original-Received: from dann by fencepost.gnu.org with local (Exim 4.71) (envelope-from ) id 1RMJSx-00013X-5H; Fri, 04 Nov 2011 09:05:51 -0400 In-Reply-To: <83vcr0l0lw.fsf@gnu.org> (Eli Zaretskii's message of "Fri, 04 Nov 2011 11:04:43 +0200") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.3 (gnu/linux) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list Resent-Date: Fri, 04 Nov 2011 09:09:01 -0400 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) 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:53511 Archived-At: Eli Zaretskii writes: >> From: Dan Nicolaescu >> Cc: 9948@debbugs.gnu.org >> Date: Thu, 03 Nov 2011 19:30:55 -0400 >> >> Eli Zaretskii writes: >> >> >> From: Dan Nicolaescu >> >> Date: Thu, 03 Nov 2011 17:55:03 -0400 >> >> >> >> aggressive = >> >> scrolling_up >> >> ? BVAR (current_buffer, scroll_up_aggressively) >> >> : BVAR (current_buffer, scroll_down_aggressively); >> >> ^^^^^^^^^^^^^^^^^^ >> >> This one >> > >> > How can this be uninitialized? This is a buffer-local value of a >> > variable that is initialized to nil on buffer.c. >> >> The line might be incorrect, are all the variables in that expression >> initialized correctly? > > I think so, yes. The only other variables are: > > . current_buffer -- a global variable that always has some value > > . scrolling_up -- computed in the line above this snippet. It > depends on margin_pos, which is initialized at the beginning of > the parent block. > > The BVAR macro doesn't reference any variables except its first > argument. > > So I'm really puzzled about this one. Is there any way to ask > valgrind for a more detailed report? It looks like there's a --track-origins=yes that might help. Now just need to reproduce the same issue (which occurred after quite a bit of random editing/playing around, so it might not be easy...).