From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS22989 209.51.188.0/24 X-Spam-Status: No, score=-3.7 required=3.0 tests=AWL,BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dcvr.yhbt.net (Postfix) with ESMTPS id 0449F1F462 for ; Sun, 28 Jul 2019 15:31:15 +0000 (UTC) Received: from localhost ([::1]:45716 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hrl8j-0000Js-NC for normalperson@yhbt.net; Sun, 28 Jul 2019 11:31:13 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:55631) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hrl8g-0000G4-34 for bug-gnulib@gnu.org; Sun, 28 Jul 2019 11:31:10 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hrl8f-0005AF-1V for bug-gnulib@gnu.org; Sun, 28 Jul 2019 11:31:10 -0400 Received: from mo6-p00-ob.smtp.rzone.de ([2a01:238:20a:202:5300::8]:33557) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hrl8e-00054s-Cj for bug-gnulib@gnu.org; Sun, 28 Jul 2019 11:31:08 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1564327864; s=strato-dkim-0002; d=clisp.org; h=References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: X-RZG-CLASS-ID:X-RZG-AUTH:From:Subject:Sender; bh=s0ciidDDfpejaRevZfC3QhaCG/3lb0JCpa80k7uVE6E=; b=bmcbRsBejgbouND/QSQ+698NeHmalFQCdh7yRqtPrBLSLMvymawymEJBQIKMni+Sc7 RgOdL79wtyzsXG7fTJttd+VKMFEeM4d6WBVjgtpquPnbzxhsbXo4Jz76WWE4xxAISo4b P8Tk4ShEcBH3TTJFH9lkzExlngG+UflLcfhClc3lpXZoqRJ2C6YYpDILzsug9rBBodf3 Q/kc8pJJbUBmiMbvb9ARtyKGIlU0uWNzwbW+ApjJ+Jix7oo8QxkNRR5WPfodBrhemTKL JxnLUiFr6TuFiTzRr3jTHvgWu+E2G0SpgERc0hmBqCYLsp4U/ZqBflwMjIeZ7VSoEBQP NDWw== X-RZG-AUTH: ":Ln4Re0+Ic/6oZXR1YgKryK8brlshOcZlIWs+iCP5vnk6shH+AHjwLuWOGaf0zJZW" X-RZG-CLASS-ID: mo00 Received: from bruno.haible.de by smtp.strato.de (RZmta 44.24 DYNA|AUTH) with ESMTPSA id v018bcv6SFV3ljO (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (curve secp521r1 with 521 ECDH bits, eq. 15360 bits RSA)) (Client did not present a certificate); Sun, 28 Jul 2019 17:31:03 +0200 (CEST) From: Bruno Haible To: Paul Eggert Subject: Re: regex: avoid memory leak Date: Sun, 28 Jul 2019 17:31:02 +0200 Message-ID: <3562328.vpQL9uWzTV@omega> User-Agent: KMail/5.1.3 (Linux/4.4.0-157-generic; KDE/5.18.0; x86_64; ; ) In-Reply-To: References: <15819003.QUfdhuhlib@omega> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2a01:238:20a:202:5300::8 X-BeenThere: bug-gnulib@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Gnulib discussion list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: bug-gnulib@gnu.org Errors-To: bug-gnulib-bounces+normalperson=yhbt.net@gnu.org Sender: "bug-gnulib" Hi Paul, > I think there's a related memory bug nearby. See: > > https://sourceware.org/bugzilla/show_bug.cgi?id=24844 Good catch. Yes, when looking at the definitions of free_state, re_node_set_free, re_free, it's clear that storing NULL in newstate->entrance_nodes is going to cause a crash. Bruno