From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: martin rudalics Newsgroups: gmane.emacs.bugs Subject: bug#60096: 29.0.60; Crash in format_mode_line_unwind_data Date: Sat, 17 Dec 2022 10:17:00 +0100 Message-ID: <325aaa94-74fa-cf94-b66c-b87c69ebe386@gmx.at> References: <86a63oen2m.fsf@mail.linkov.net> <83sfhgjqd7.fsf@gnu.org> <86cz8jls87.fsf@mail.linkov.net> <83k02rk1vk.fsf@gnu.org> <83ilibjttu.fsf@gnu.org> <83fsdfjsq9.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="26378"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 60096@debbugs.gnu.org, juri@linkov.net To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sat Dec 17 10:18:34 2022 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 1p6TKz-0006iv-VV for geb-bug-gnu-emacs@m.gmane-mx.org; 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Sat, 17 Dec 2022 10:17:04 +0100 Content-Language: en-US In-Reply-To: <83fsdfjsq9.fsf@gnu.org> X-Provags-ID: V03:K1:zd/bXLZG90sXGL0JA4y5OS/GmOhH1vYjC2+OCIUWikGajaeVYz2 s4n3o2bcC93b6NUjqKFEzaaeihVBKiobeIWOTJV2IFHiRxZsuDPGU9lSclzw/m9IJE5R95n 5m0aoaCPC0yeUlT9FWohczkY/tZOiUdOz6furuWgqN0tPPdml45HpqNxPaggieU6ql3Ec1d e5H5uE5zCvINqObJwPr1A== UI-OutboundReport: notjunk:1;M01:P0:iv/1yx5SDsc=;NUdltGLj4uQcgdSX/oc7SmJsCTr vhFOx9gwBXhLNjHnON/Krn39btzBESqs5Kynnha3GUVyJitZ4ePhgGP7j0JF32I4Gr9WJbMUC YReVPf6c/71YQkkLCyiE8kZmvBkSDmRt5fi+on9Qc6o66zQ/6ELmD/OyZ6B9FGZRLPmxU6e1T MVNJisASDoLsAR8EtfMpI9BNkVkJXnvBua981LQX8azcDqhuPlNdgzTdQypgRFyhkKPRtNlgB f7pFpQCK+B48CKjsF2Dk4hfPY3ow30RsFa60bDP2mzZrrY9OuOPCXxvUZC5b6lz98e/j1A9Qy ep3Bv6Hh2WBqoK24EWuPpGgWhRLQbsiNgOGFX3W/J8lupo8wCN8g6zLX8kQacE+DQ7vqhhtwR lWWW63XVJKVJypWQzM6aaxBW0B8PBhF/mArTxT0OZsbko8ZTkiCL0UwL0DrZ8pc39q4b9wfxN Z9btOvzusbnFLGOXo04sjjCm9nf0EbfDP0wi3WgQMQgJmVYkipt5ky/EdwaKz5kyiqJNO472s uOV7AecaGblGDI77l+gJ+vMqefUSbgRTrrEiQChqFHESNnBUh5qbCDuB5tIIKSuVEbkIcr6/F oLikaHQLUASUt9g2MH9yf5ncagAxricHeljkDiDwZSTVDvjdV0D3Zhfkw2P74dff9WwY4TCNf CVciotduLaoR91sa4Qfyio9iiIctgBSc+0dx72MrDs9MVMEOUHIwKuGy4VQ56Bv05r9VGtpGE ACD41jFpaCcmXG+KxUEunuR0Zb/SVa4J07KG5V+JozxHav7pMWcLTT7GVFz8fxBG2UKIAnVf X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:251264 Archived-At: > Basically, set-window-configuration was called in a situation where it > has only one valid buffer to play with, which is tough for its logic > and the various other functions it invokes. The result was a bunch of > bad windows with nil as their buffer. If a live window has nil as its buffer, next redisplay will reliably crash Emacs anyway. So this /* We may have deleted windows above. Then again, maybe we haven't: the functions we call to maybe delete windows can decide a window cannot be deleted. Force recalculation of Vwindow_list next time it is needed, to make sure stale windows with no buffers don't escape into the wild, which will cause crashes elsewhere. */ Vwindow_list = Qnil; should not be needed. Otherwise we'd have been in serious trouble ever since Vwindow_list was added. The earlier call delete_all_child_windows (FRAME_ROOT_WINDOW (f)); should have reliably reset Vwindow_list to nil. martin