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#9983: valgrind warning in draw_glyphs Date: Sun, 06 Nov 2011 23:36:42 -0500 Message-ID: NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: dough.gmane.org 1320640642 29425 80.91.229.12 (7 Nov 2011 04:37:22 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Mon, 7 Nov 2011 04:37:22 +0000 (UTC) To: 9983@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Nov 07 05:37:17 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 1RNGxR-0006U0-7B for geb-bug-gnu-emacs@m.gmane.org; Mon, 07 Nov 2011 05:37:17 +0100 Original-Received: from localhost ([::1]:37685 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RNGxQ-0006rf-LO for geb-bug-gnu-emacs@m.gmane.org; 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Sun, 06 Nov 2011 23:36:44 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1RNGws-0004Tz-Qc for bug-gnu-emacs@gnu.org; Sun, 06 Nov 2011 23:36:43 -0500 Original-Received: from fencepost.gnu.org ([140.186.70.10]:50949) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RNGws-0004Tv-Kv for bug-gnu-emacs@gnu.org; Sun, 06 Nov 2011 23:36:42 -0500 Original-Received: from dann by fencepost.gnu.org with local (Exim 4.71) (envelope-from ) id 1RNGws-0000Kp-EF for bug-gnu-emacs@gnu.org; Sun, 06 Nov 2011 23:36:42 -0500 User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.3 (gnu/linux) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list Resent-Date: Sun, 06 Nov 2011 23:40:02 -0500 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:53641 Archived-At: trunk with lucid toolkit valgrind ./temacs -Q gives this warning (not sure exactly when, just playing with the menus and tooltips, the only "editing" action was to run a grep) ==2341== Conditional jump or move depends on uninitialised value(s) ==2341== at 0x44CDDA: draw_glyphs (xdisp.c:22981) ==2341== by 0x44D9FC: expose_area (xdisp.c:27401) ==2341== by 0x44DDA8: expose_line (xdisp.c:27426) ==2341== by 0x45B6AA: expose_window (xdisp.c:27653) ==2341== by 0x45C0DA: expose_window_tree (xdisp.c:27725) ==2341== by 0x45C0B0: expose_window_tree (xdisp.c:27723) ==2341== by 0x45C16E: expose_frame (xdisp.c:27780) ==2341== by 0x4C188D: handle_one_xevent (xterm.c:6219) ==2341== by 0x4C2F56: XTread_socket (xterm.c:7148) ==2341== by 0x4F2F26: read_avail_input (keyboard.c:6821) ==2341== by 0x4F3049: handle_async_input (keyboard.c:7149) ==2341== by 0x4F26A4: process_pending_signals (keyboard.c:7165) ==2341== Uninitialised value was created by a stack allocation ==2341== at 0x44AAD3: draw_glyphs (xdisp.c:22835) ==2341== The warning is for this: if (check_mouse_face && mouse_beg_col < start && mouse_end_col > i) it looks like mouse_beg_col and mouse_end_col could be left uninitialized a few lines above.