From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#39977: 28.0.50; Unhelpful stack trace Date: Sun, 15 Mar 2020 20:41:42 +0200 Message-ID: <83k13lbgux.fsf@gnu.org> References: <83zhcs80e5.fsf@gnu.org> <83imj88tpt.fsf@gnu.org> <550fbc22-09db-d30b-c194-8f26b5dca05f@gmx.at> <83wo7o6nxs.fsf@gnu.org> <60dd4ced-a2e5-ed17-0570-b7bdd2a557af@gmx.at> <83blozckn2.fsf@gnu.org> <01305dbc-c69b-baf9-f0bf-1e5b8c04d970@gmx.at> <83y2s2bswl.fsf@gnu.org> <3ac189d0-5d05-fdf9-0922-0c464b1b17c3@gmx.at> Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="90275"; mail-complaints-to="usenet@ciao.gmane.io" Cc: enometh@meer.net, 39977@debbugs.gnu.org To: martin rudalics Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun Mar 15 19:42:54 2020 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jDYDt-000NNq-RK for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 15 Mar 2020 19:42:53 +0100 Original-Received: from localhost ([::1]:57024 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jDYDs-00076M-Fk for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 15 Mar 2020 14:42:52 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:55077) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jDYD9-00075S-HO for bug-gnu-emacs@gnu.org; Sun, 15 Mar 2020 14:42:08 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jDYD5-0000mK-GR for bug-gnu-emacs@gnu.org; Sun, 15 Mar 2020 14:42:04 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:57838) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1jDYD3-0000jB-Q4 for bug-gnu-emacs@gnu.org; Sun, 15 Mar 2020 14:42:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1jDYD3-0004aA-KV for bug-gnu-emacs@gnu.org; Sun, 15 Mar 2020 14:42:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 15 Mar 2020 18:42:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 39977 X-GNU-PR-Package: emacs Original-Received: via spool by 39977-submit@debbugs.gnu.org id=B39977.158429771917606 (code B ref 39977); Sun, 15 Mar 2020 18:42:01 +0000 Original-Received: (at 39977) by debbugs.gnu.org; 15 Mar 2020 18:41:59 +0000 Original-Received: from localhost ([127.0.0.1]:35578 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jDYD1-0004Zt-5u for submit@debbugs.gnu.org; Sun, 15 Mar 2020 14:41:59 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:39623) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jDYCz-0004Zi-TX for 39977@debbugs.gnu.org; Sun, 15 Mar 2020 14:41:58 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:56899) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1jDYCu-0008Tn-8r; Sun, 15 Mar 2020 14:41:52 -0400 Original-Received: from [176.228.60.248] (port=1321 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1jDYCs-0003jj-QU; Sun, 15 Mar 2020 14:41:52 -0400 In-Reply-To: <3ac189d0-5d05-fdf9-0922-0c464b1b17c3@gmx.at> (message from martin rudalics on Sun, 15 Mar 2020 18:49:21 +0100) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.51.188.43 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:177386 Archived-At: > Cc: enometh@meer.net, 39977@debbugs.gnu.org > From: martin rudalics > Date: Sun, 15 Mar 2020 18:49:21 +0100 > > > And what do you suggest to do if the frame at RHS is not live? > > Sorry, what is RHS? Right-hand side. > As far as xdisp.c is concerned it simply must not set selected_frame > to a dead frame. I don't think that's possible in xdisp.c cases you've shown. > Never ever. Why not? > As far as frame.c is concerned, it should do something like in the > attached patch. We cannot punt like that in the display engine. > > Why do you think this is a problem for redisplay? > > I didn't say that this is a problem for redisplay. What I wanted to say > is that your fix which is supposed to handle a (maybe only temporary) > problem inside redisplay might cause more serious problems when > selecting a dead frame outside of redisplay. But maybe I'm confusing > things. So you are saying that selecting such a frame will cause trouble to some other code, not to the display engine?