From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#57804: An infinite loop in a `fontify-region' function causes Emacs to hang indefinitely Date: Wed, 14 Sep 2022 20:51:43 +0300 Message-ID: <83mtb126a8.fsf@gnu.org> References: <834jx93n4p.fsf@gnu.org> <87y1ul501n.fsf@gnus.org> <83pmfx26mf.fsf@gnu.org> <87pmfx4zo8.fsf@gnus.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="6611"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 57804@debbugs.gnu.org, pogonyshev@gmail.com To: Lars Ingebrigtsen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed Sep 14 19:56:05 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 1oYWcG-0001TN-Pu for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 14 Sep 2022 19:56:04 +0200 Original-Received: from localhost ([::1]:44724 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oYWcF-0000zJ-F9 for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 14 Sep 2022 13:56:03 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:36918) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oYWZL-0005rn-CL for bug-gnu-emacs@gnu.org; Wed, 14 Sep 2022 13:53:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:39117) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oYWZK-000582-3O for bug-gnu-emacs@gnu.org; Wed, 14 Sep 2022 13:53:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1oYWZJ-00019v-TX for bug-gnu-emacs@gnu.org; Wed, 14 Sep 2022 13:53:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 14 Sep 2022 17:53:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 57804 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: wontfix Original-Received: via spool by 57804-submit@debbugs.gnu.org id=B57804.16631779304376 (code B ref 57804); Wed, 14 Sep 2022 17:53:01 +0000 Original-Received: (at 57804) by debbugs.gnu.org; 14 Sep 2022 17:52:10 +0000 Original-Received: from localhost ([127.0.0.1]:56046 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oYWYT-00018W-Of for submit@debbugs.gnu.org; Wed, 14 Sep 2022 13:52:10 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:49300) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oYWYR-00018H-7q for 57804@debbugs.gnu.org; Wed, 14 Sep 2022 13:52:08 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:58804) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oYWYM-0004xc-0P; Wed, 14 Sep 2022 13:52:02 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=C9fNR1YRMl1uZlNo6TqAXY6ao0hhqmzHeoPd7zh3KtM=; b=PHWUhrIVzMLx mbKGNMsizSDnQUXTDfspyFZTUyCgfy9CEEiD3TJoFKSysgTUXU0vr15X/Y7UqAJzNnDG/iX3oSI94 rjsxT0IH4fxQMzNyiDeYXSi7KbQfPXtEvVUPNTnt+96ASBt3uz+KIVA0cwMQSIYR7wO3eCEZECn9Q 4OatpHraRZZDHAv+SvUECuSXxWYhJKmoX6ehgSnEopKCixjlXKiSJo/ZD2+khT1KtKO2mjdXFBX/q FwILM9AQeWg0mwsBp4VA5Pilk/tS3nZbgvKuMp5mp2MIP2kj9uU1rKRNGw88l9gVFZww+EDNB+RIA sgjXh/eDu7ZDMkEeDTBI4Q==; Original-Received: from [87.69.77.57] (port=1628 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oYWYE-0008TG-CI; Wed, 14 Sep 2022 13:52:01 -0400 In-Reply-To: <87pmfx4zo8.fsf@gnus.org> (message from Lars Ingebrigtsen on Wed, 14 Sep 2022 19:46:15 +0200) 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" Xref: news.gmane.io gmane.emacs.bugs:242504 Archived-At: > From: Lars Ingebrigtsen > Cc: pogonyshev@gmail.com, 57804@debbugs.gnu.org > Date: Wed, 14 Sep 2022 19:46:15 +0200 > > Eli Zaretskii writes: > > > While testing my code? sure. But after testing, no, the loops are > > generally gone. > > Of course. This is a real problem while developing font locking methods > (and usually not afterwards). While testing, I usually run Emacs under a debugger, where I always can interrupt any loop, including in font-lock. I think it is also possible without a debugger -- if you bind 'sigusr2' to some useful function.