From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.bugs Subject: bug#7728: 24.0.50; GDB backtrace from abort Date: Sat, 25 Dec 2010 15:35:31 -0500 Message-ID: References: <30041A5C411E45A7B7AF7A9ECA3AA0BE@us.oracle.com> <83y67echvm.fsf@gnu.org> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: dough.gmane.org 1293310402 27966 80.91.229.12 (25 Dec 2010 20:53:22 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Sat, 25 Dec 2010 20:53:22 +0000 (UTC) Cc: 7728@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Dec 25 21:53:18 2010 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1PWb77-00066K-Oi for geb-bug-gnu-emacs@m.gmane.org; Sat, 25 Dec 2010 21:53:18 +0100 Original-Received: from localhost ([127.0.0.1]:38237 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PWb77-0001mE-6h for geb-bug-gnu-emacs@m.gmane.org; Sat, 25 Dec 2010 15:53:17 -0500 Original-Received: from [140.186.70.92] (port=42315 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PWb72-0001lq-QO for bug-gnu-emacs@gnu.org; Sat, 25 Dec 2010 15:53:13 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PWb71-0001z1-Li for bug-gnu-emacs@gnu.org; Sat, 25 Dec 2010 15:53:12 -0500 Original-Received: from debbugs.gnu.org ([140.186.70.43]:51800) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PWb71-0001ys-Il for bug-gnu-emacs@gnu.org; Sat, 25 Dec 2010 15:53:11 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.69) (envelope-from ) id 1PWaje-0005ET-4L; Sat, 25 Dec 2010 15:29:02 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Stefan Monnier Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-To: owner@debbugs.gnu.org Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 25 Dec 2010 20:29:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 7728 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 7728-submit@debbugs.gnu.org id=B7728.129330893120096 (code B ref 7728); Sat, 25 Dec 2010 20:29:02 +0000 Original-Received: (at 7728) by debbugs.gnu.org; 25 Dec 2010 20:28:51 +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 1PWajS-0005E5-J4 for submit@debbugs.gnu.org; Sat, 25 Dec 2010 15:28:50 -0500 Original-Received: from ironport2-out.teksavvy.com ([206.248.154.181] helo=ironport2-out.pppoe.ca) by debbugs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1PWajQ-0005Dt-PX for 7728@debbugs.gnu.org; Sat, 25 Dec 2010 15:28:49 -0500 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AvsEABDkFU3O+LP+/2dsb2JhbACkMHS+F4VKBIRljhs X-IronPort-AV: E=Sophos;i="4.60,229,1291611600"; d="scan'208";a="86514971" Original-Received: from 206-248-179-254.dsl.teksavvy.com (HELO pastel.home) ([206.248.179.254]) by ironport2-out.pppoe.ca with ESMTP/TLS/ADH-AES256-SHA; 25 Dec 2010 15:35:31 -0500 Original-Received: by pastel.home (Postfix, from userid 20848) id 8754258EBF; Sat, 25 Dec 2010 15:35:31 -0500 (EST) In-Reply-To: <83y67echvm.fsf@gnu.org> (Eli Zaretskii's message of "Sat, 25 Dec 2010 11:38:05 +0200") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.11 Precedence: list Resent-Date: Sat, 25 Dec 2010 15:29:02 -0500 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) 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: , Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:42857 Archived-At: >> Program received signal SIGTRAP, Trace/breakpoint trap. >> [Switching to Thread 3684.0x1210] >> 0x7c90120f in ntdll!DbgUiConnectToDbg () from C:\WINDOWS\system32\ntdll.dll >> (gdb) bt >> #0 0x7c90120f in ntdll!DbgUiConnectToDbg () from C:\WINDOWS\system32\ntdll.dll >> #1 0x01309b9f in w32_abort () at w32fns.c:7312 >> #2 0x0104a0af in die (msg=0x159401c "assertion failed: >> WINDOWP(selected_window)", >> file=0x1593ee0 "xdisp.c", line=1156) at alloc.c:6129 >> #3 0x0116327a in window_text_bottom_y (w=0x58b2c00) at xdisp.c:1156 > The abort happens in this source line in window_text_bottom_y: > height -= CURRENT_MODE_LINE_HEIGHT (w); > The macro CURRENT_MODE_LINE_HEIGHT accesses selected_window: > #define CURRENT_MODE_LINE_HEIGHT(W) \ > (current_mode_line_height >= 0 \ > ? current_mode_line_height \ > : (MATRIX_MODE_LINE_HEIGHT ((W)->current_matrix) \ > ? MATRIX_MODE_LINE_HEIGHT ((W)->current_matrix) \ > : estimate_mode_line_height (XFRAME ((W)->frame), \ > CURRENT_MODE_LINE_FACE_ID (W)))) > #define CURRENT_MODE_LINE_FACE_ID(W) \ > (CURRENT_MODE_LINE_FACE_ID_3((W), XWINDOW (selected_window), (W))) > and XWINDOW tries to assert (under ENABLE_CHECKING) that its argument > is indeed a window. > So it looks like somehow we get into selected_window a value that is > not a window. I'm guessing it was nil in this case. If selected_window is nil because of Fset_window_configuration, then it is presumably nil for all the intervening and some of the subsequent code, and I suspect fixing it earlier in the call chain will be preferable: e.g., it doesn't make sense to "display_and_set_cursor" in the "selected_window = nil" case. Stefan