From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Andreas Schwab Newsgroups: gmane.emacs.devel Subject: Re: fsanitize=bounds-strict caught potential error Date: Sun, 05 Dec 2021 16:24:46 +0100 Message-ID: <87mtlfoz0h.fsf@igel.home> References: <87o85vp5hs.fsf.ref@yahoo.com> <87o85vp5hs.fsf@yahoo.com> <83wnkj2m21.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="24209"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.90 (gnu/linux) Cc: Po Lu , emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Sun Dec 05 16:25:40 2021 Return-path: Envelope-to: ged-emacs-devel@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 1mttOW-00067i-2r for ged-emacs-devel@m.gmane-mx.org; Sun, 05 Dec 2021 16:25:40 +0100 Original-Received: from localhost ([::1]:49422 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mttOU-0005a2-UO for ged-emacs-devel@m.gmane-mx.org; Sun, 05 Dec 2021 10:25:38 -0500 Original-Received: from eggs.gnu.org ([209.51.188.92]:38694) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mttNk-0004kJ-BJ for emacs-devel@gnu.org; Sun, 05 Dec 2021 10:24:52 -0500 Original-Received: from mail-out.m-online.net ([212.18.0.10]:55156) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mttNi-0003A1-H2; Sun, 05 Dec 2021 10:24:52 -0500 Original-Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 4J6VjX2J75z1sCTg; Sun, 5 Dec 2021 16:24:48 +0100 (CET) Original-Received: from localhost (dynscan1.mnet-online.de [192.168.6.70]) by mail.m-online.net (Postfix) with ESMTP id 4J6VjX23KRz1qqkD; Sun, 5 Dec 2021 16:24:48 +0100 (CET) X-Virus-Scanned: amavisd-new at mnet-online.de Original-Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan1.mail.m-online.net [192.168.6.70]) (amavisd-new, port 10024) with ESMTP id 95-Tb8pUyxGA; Sun, 5 Dec 2021 16:24:47 +0100 (CET) X-Auth-Info: +fgwQUo43dSHm5Yyv6kTJjP9FJDZqa+Y9hG+EuAQ5vjifR8AqF+37viOv08mZi52 Original-Received: from igel.home (ppp-46-244-175-114.dynamic.mnet-online.de [46.244.175.114]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPSA; Sun, 5 Dec 2021 16:24:47 +0100 (CET) Original-Received: by igel.home (Postfix, from userid 1000) id F35642C39AD; Sun, 5 Dec 2021 16:24:46 +0100 (CET) X-Yow: We place two copies of PEOPLE magazine in a DARK, HUMID mobile home. 45 minutes later CYNDI LAUPER emerges wearing a BIRD CAGE on her head! In-Reply-To: <83wnkj2m21.fsf@gnu.org> (Eli Zaretskii's message of "Sun, 05 Dec 2021 15:55:34 +0200") Received-SPF: pass client-ip=212.18.0.10; envelope-from=whitebox@nefkom.net; helo=mail-out.m-online.net X-Spam_score_int: -23 X-Spam_score: -2.4 X-Spam_bar: -- X-Spam_report: (-2.4 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:281004 Archived-At: On Dez 05 2021, Eli Zaretskii wrote: >> From: Po Lu >> Date: Sun, 05 Dec 2021 21:04:47 +0800 >> >> I don't know if this message is correct or not, but I got >> >> xdisp.c:30394:37: runtime error: index -1 out of bounds for type 'iterator_stack_entry [5]' > > The compiler doesn't know enough to realize that this code can never > be executed with it->sp < 1. This code is there since 2003, and never > gave us any trouble. If you put a breakpoint there, you will see it.sp == 0 most of the time actually. Andreas. -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1 "And now for something completely different."