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 20:44:24 +0300 Message-ID: <83pmfx26mf.fsf@gnu.org> References: <834jx93n4p.fsf@gnu.org> <87y1ul501n.fsf@gnus.org> Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="21269"; 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 19:51:04 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 1oYWXP-0005Or-NR for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 14 Sep 2022 19:51:03 +0200 Original-Received: from localhost ([::1]:53386 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oYWXO-0003bE-NY for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 14 Sep 2022 13:51:02 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:38824) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oYWRc-0006SJ-Ct for bug-gnu-emacs@gnu.org; Wed, 14 Sep 2022 13:45:04 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:39094) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1oYWRa-0003a6-4P for bug-gnu-emacs@gnu.org; Wed, 14 Sep 2022 13:45:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1oYWRZ-0000uy-Uh for bug-gnu-emacs@gnu.org; Wed, 14 Sep 2022 13:45:01 -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 17:45:01 +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=B57804.16631774803490 (code B ref 57804); Wed, 14 Sep 2022 17:45:01 +0000 Original-Received: (at 57804) by debbugs.gnu.org; 14 Sep 2022 17:44:40 +0000 Original-Received: from localhost ([127.0.0.1]:56026 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oYWRE-0000uD-2A for submit@debbugs.gnu.org; Wed, 14 Sep 2022 13:44:40 -0400 Original-Received: from eggs.gnu.org ([209.51.188.92]:35322) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1oYWRD-0000u1-4L for 57804@debbugs.gnu.org; Wed, 14 Sep 2022 13:44:39 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:37714) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oYWR7-0003Ut-Ro; Wed, 14 Sep 2022 13:44:33 -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=W2/Cz2rEKXq1DXWu7j1ttMf1KVlqOl3U4QlE88PoTOo=; b=lLOFc4BQlMmm BW6YR1fNenY+gTO0A5hHuQEmofQPWOt/nxWSzL0ePUH/cVmGegAkb8WDJ8kzcOM12cWFLVi3SXddA GCQrThsLpCZrR4vLzoFRBaDvmVp19R4aqkF1TAwBVqa0zjeSTeqdv/8dZkWLRY+KKSsI4yMGzAzvU 1nMmXQSXaM+MAWv705aJmNQc0oaAkTdCSvFbRNo5xvQCbcjogcvo0L2R/9bPhcV03VXRcbn3gbHQ/ QvTRh1h0cACGOfkgPb17WHb8eVZQqt+Z5TJa7MMjMk29ClnJ8h/cycoGEhVPXvTCNaZfxVqNfEZj5 fZqLLyT21hUX+fiQH62/HA==; Original-Received: from [87.69.77.57] (port=1175 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 1oYWR6-0007Rh-Qk; Wed, 14 Sep 2022 13:44:33 -0400 In-Reply-To: <87y1ul501n.fsf@gnus.org> (message from Lars Ingebrigtsen on Wed, 14 Sep 2022 19:38:12 +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:242501 Archived-At: > From: Lars Ingebrigtsen > Cc: Paul Pogonyshev , 57804@debbugs.gnu.org > Date: Wed, 14 Sep 2022 19:38:12 +0200 > > Eli Zaretskii writes: > > > This case is exactly one of those which I think we shouldn't try to > > fix, because it's the case of "buggy Lisp program", a.k.a. "don't do > > that". There's no reason for any useful Lisp program to have an > > infloop like this: > > > >> (while t > >> "whoopsie") > > You've never accidentally put an infloop into a font locking function? While testing my code? sure. But after testing, no, the loops are generally gone. > We should definitely fix this is we can. I disagree.