From debbugs-submit-bounces@debbugs.gnu.org Wed Feb 24 11:19:17 2016 Received: (at submit) by debbugs.gnu.org; 24 Feb 2016 16:19:17 +0000 Received: from localhost ([127.0.0.1]:44009 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aYc9l-0006aZ-IC for submit@debbugs.gnu.org; Wed, 24 Feb 2016 11:19:17 -0500 Received: from eggs.gnu.org ([208.118.235.92]:45837) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aYc9k-0006aL-8u for submit@debbugs.gnu.org; Wed, 24 Feb 2016 11:19:16 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aYc9Z-0001RI-PR for submit@debbugs.gnu.org; Wed, 24 Feb 2016 11:19:11 -0500 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=disabled version=3.3.2 Received: from lists.gnu.org ([2001:4830:134:3::11]:43281) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aYc9Z-0001RC-M9 for submit@debbugs.gnu.org; Wed, 24 Feb 2016 11:19:05 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:36801) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aYc9Y-0007at-JS for bug-grep@gnu.org; Wed, 24 Feb 2016 11:19:05 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aYc9U-0001Qo-Bl for bug-grep@gnu.org; Wed, 24 Feb 2016 11:19:04 -0500 Received: from mx1.riseup.net ([198.252.153.129]:60709) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aYc9U-0001Qd-4v for bug-grep@gnu.org; Wed, 24 Feb 2016 11:19:00 -0500 Received: from piha.riseup.net (unknown [10.0.1.163]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (Client CN "*.riseup.net", Issuer "COMODO RSA Domain Validation Secure Server CA" (verified OK)) by mx1.riseup.net (Postfix) with ESMTPS id F41981A1F4C for ; Wed, 24 Feb 2016 16:18:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=riseup.net; s=squak; t=1456330739; bh=Hpia9r4PdeUJfR0cLzLcl0aobc1Vyj2saQITRgsMZOQ=; h=Date:From:To:Subject:From; b=lizfub9umbeslUpivn8Jg7N4anPcIncxbhB8ZN2CioyoYGVSn4MlEUpjlVVJIqa86 grtX41ixc0+igsyfcTKsIcy1msdHg5V5kjrrRyhZSvHCFHNBC2rT5GQjyH7XJcgG/e hdBXKI9aG1+aNRXIhEGDS3nIwSUTRDBxFUeLhdnw= Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: santiagorr) with ESMTPSA id 5FB081C0090 Received: by nomada (sSMTP sendmail emulation); Wed, 24 Feb 2016 17:18:54 +0100 Date: Wed, 24 Feb 2016 17:18:54 +0100 From: santiagorr@riseup.net To: bug-grep@gnu.org Subject: grep -E assertion failure with back references Message-ID: <20160224161854.GA20452@riseup.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Virus-Scanned: clamav-milter 0.98.7 at mx1.riseup.net X-Virus-Status: Clean X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 2001:4830:134:3::11 X-Spam-Score: -4.4 (----) X-Debbugs-Envelope-To: submit X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -4.4 (----) Hi, This is a long standing bug reported to Debian, still present in 2.23. It was forwarded at some point, but I cannot find any reference, so I'm reforwarding it. % echo abc | LANG=C grep -E '(.*)(.*)(.*)\3\2\1' grep: regexec.c:1401: pop_fail_stack: Assertion `num >= 0' failed. More info at: https://bugs.debian.org/186568 Regards, Santiago From debbugs-submit-bounces@debbugs.gnu.org Wed Feb 24 13:57:05 2016 Received: (at 22793) by debbugs.gnu.org; 24 Feb 2016 18:57:05 +0000 Received: from localhost ([127.0.0.1]:44186 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aYecT-0003mM-5H for submit@debbugs.gnu.org; Wed, 24 Feb 2016 13:57:05 -0500 Received: from mail-ob0-f174.google.com ([209.85.214.174]:34424) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aYecR-0003lt-Tf for 22793@debbugs.gnu.org; Wed, 24 Feb 2016 13:57:04 -0500 Received: by mail-ob0-f174.google.com with SMTP id ts10so26926593obc.1 for <22793@debbugs.gnu.org>; Wed, 24 Feb 2016 10:57:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc:content-type; bh=lwRlOoU8tXTXwgje3OJGLwbaK+CiuH9BZOlUL2z9L/s=; b=PcVaM7EHe+H2bZTuwElYRAAEt2DXADXlH8meSkltZy5dU6L4o88gi+DSDDmcJjtAJP c7EXxRd5GJWiDVJhWMFz9KgAoA7I4TJqhphaO14+W6MWcbTjj7FAClpeNMx9kToy1QiH LLH7qdBld2Uij/NkNh3H9Fz4mjNisWVmNUai0hDk3fJMzAiD0d2GTtd/IIt7WETlqOlb l4t7vpTHjrELhkHB4a+n/t8BB8U+zziWrDHBF7L8usAz844fHSiwZSuhEGU4lPsWfcd4 F/jrhYNQnzSKIN5LmpUWbdXGTCBJgUtKqytIEssHxja2fwv8eMHObBmJrHNTJfW5vhfN ZbPQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc:content-type; bh=lwRlOoU8tXTXwgje3OJGLwbaK+CiuH9BZOlUL2z9L/s=; b=D9r+vrHaDFWUZWRZWK5tNOmBRg9Dyggn9TRs/piayVHR4NDtemA7mb3FzPqgpTpKXf HYUJQoRIQkQa4t5KvFPocmEc7G3KwMXTr37uzd5/s2k9E0ONRW9N4oTYqz/P4gxoCcjW x5DLC+q8jfNxeXyZyVm7TeV+hhd6iAEEvxxXHji4mai3W95cGgWBOej7Fsw3/6INY9Jw cHeLQlRI8d37kQRtjrPy7qIGVuekCLCnLkeIzrBLtnfhgORRtqGcd40+mfhkPKJ7fAJv t02jIett/q3ZAlyM6Q7lZrFKehC0TyTKqTYePkRX1tu7swDDR3BVLo1kJi055Kspnp/K +HBg== X-Gm-Message-State: AG10YORd7szpsr+ATYuVyxadmj2a/3obbRThb2Zsisjn3XoKvcJnejFkVA302xOmwz/vn1vr4H9MK9/rgCX8Fw== X-Received: by 10.60.142.170 with SMTP id rx10mr32774647oeb.37.1456340218227; Wed, 24 Feb 2016 10:56:58 -0800 (PST) MIME-Version: 1.0 Received: by 10.202.44.194 with HTTP; Wed, 24 Feb 2016 10:56:38 -0800 (PST) In-Reply-To: <20160224161854.GA20452@riseup.net> References: <20160224161854.GA20452@riseup.net> From: Jim Meyering Date: Wed, 24 Feb 2016 10:56:38 -0800 X-Google-Sender-Auth: TcBSSab1LDbjXQVEf2SG4HYwSrA Message-ID: Subject: Re: bug#22793: grep -E assertion failure with back references To: santiagorr@riseup.net Content-Type: text/plain; charset=UTF-8 X-Spam-Score: -0.5 (/) X-Debbugs-Envelope-To: 22793 Cc: 22793@debbugs.gnu.org X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -0.5 (/) forcemerge 21513 22793 thanks On Wed, Feb 24, 2016 at 8:18 AM, wrote: > Hi, > > This is a long standing bug reported to Debian, still present in 2.23. > It was forwarded at some point, but I cannot find any reference, so I'm > reforwarding it. > > % echo abc | LANG=C grep -E '(.*)(.*)(.*)\3\2\1' > grep: regexec.c:1401: pop_fail_stack: Assertion `num >= 0' failed. > > More info at: https://bugs.debian.org/186568 Correct, this was reported some time ago, both here and in the upstream glibc bugzilla: http://bugs.gnu.org/21513 https://sourceware.org/bugzilla/show_bug.cgi?id=18986 There is currently an "XFAIL" (expected-to-fail) test in grep's test suite that exercises precisely this bug: git.savannah.gnu.org/cgit/grep.git/tree/tests/triple-backref From debbugs-submit-bounces@debbugs.gnu.org Wed Feb 24 14:42:23 2016 Received: (at control) by debbugs.gnu.org; 24 Feb 2016 19:42:23 +0000 Received: from localhost ([127.0.0.1]:44209 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aYfKJ-0004yp-Ge for submit@debbugs.gnu.org; Wed, 24 Feb 2016 14:42:23 -0500 Received: from zimbra.cs.ucla.edu ([131.179.128.68]:60427) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aYfKI-0004yd-0S for control@debbugs.gnu.org; Wed, 24 Feb 2016 14:42:22 -0500 Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 2434E160FD2 for ; Wed, 24 Feb 2016 11:42:15 -0800 (PST) Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id 3y10kbGumS-7 for ; Wed, 24 Feb 2016 11:42:15 -0800 (PST) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 31640160FD3 for ; Wed, 24 Feb 2016 11:42:15 -0800 (PST) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id O-pwKOuRWFts for ; Wed, 24 Feb 2016 11:42:15 -0800 (PST) Received: from penguin.cs.ucla.edu (Penguin.CS.UCLA.EDU [131.179.64.200]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 19AAD160FD2 for ; Wed, 24 Feb 2016 11:42:15 -0800 (PST) To: control@debbugs.gnu.org From: Paul Eggert Subject: 21513 and 22793 are the same Organization: UCLA Computer Science Department Message-ID: <56CE0793.2060007@cs.ucla.edu> Date: Wed, 24 Feb 2016 11:42:11 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -0.0 (/) X-Debbugs-Envelope-To: control X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -0.0 (/) forcemerge 21513 22793 From debbugs-submit-bounces@debbugs.gnu.org Wed Feb 24 14:47:04 2016 Received: (at 22793) by debbugs.gnu.org; 24 Feb 2016 19:47:04 +0000 Received: from localhost ([127.0.0.1]:44219 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aYfOq-0006j7-CC for submit@debbugs.gnu.org; Wed, 24 Feb 2016 14:47:04 -0500 Received: from zimbra.cs.ucla.edu ([131.179.128.68]:60696) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aYfOo-0006dt-GI for 22793@debbugs.gnu.org; Wed, 24 Feb 2016 14:47:02 -0500 Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 1FE34160FD2; Wed, 24 Feb 2016 11:46:57 -0800 (PST) Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id JfghaGVVwGtk; Wed, 24 Feb 2016 11:46:56 -0800 (PST) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 1B0B7160FD3; Wed, 24 Feb 2016 11:46:56 -0800 (PST) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id PXJHi72JYyak; Wed, 24 Feb 2016 11:46:56 -0800 (PST) Received: from penguin.cs.ucla.edu (Penguin.CS.UCLA.EDU [131.179.64.200]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id F3A65160FD2; Wed, 24 Feb 2016 11:46:55 -0800 (PST) Subject: Re: bug#22793: grep -E assertion failure with back references To: Jim Meyering , santiagorr@riseup.net References: <20160224161854.GA20452@riseup.net> From: Paul Eggert Organization: UCLA Computer Science Department Message-ID: <56CE08AF.2080507@cs.ucla.edu> Date: Wed, 24 Feb 2016 11:46:55 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -0.0 (/) X-Debbugs-Envelope-To: 22793 Cc: 22793@debbugs.gnu.org, 186568@bugs.debian.org X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -0.0 (/) With recent 'grep' you can work around the problem by configuring --with-included-regex. That has some other undesirable properties, though. This is really a glibc bug and the glibc patch could be applied to the Debian copy of glibc. Here's the patch: http://git.savannah.gnu.org/cgit/gnulib.git/commit/?id=5513b40999149090987a0341c018d05d3eea1272 In other words, Debian bug #186568 is really a glibc bug, not a grep bug. Can you please fix the Debian bug report accordingly? I'll CC: this message there. From debbugs-submit-bounces@debbugs.gnu.org Thu Feb 25 01:12:42 2016 Received: (at 22793) by debbugs.gnu.org; 25 Feb 2016 06:12:42 +0000 Received: from localhost ([127.0.0.1]:44592 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aYpAI-0000Nm-3a for submit@debbugs.gnu.org; Thu, 25 Feb 2016 01:12:42 -0500 Received: from freefriends.org ([96.88.95.60]:60549) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aYpAG-0000Ne-2P for 22793@debbugs.gnu.org; Thu, 25 Feb 2016 01:12:40 -0500 X-Envelope-From: arnold@skeeve.com Received: from freefriends.org (localhost [127.0.0.1]) by freefriends.org (8.14.9/8.14.9) with ESMTP id u1P6CDII022523; Wed, 24 Feb 2016 23:12:13 -0700 Received: (from arnold@localhost) by freefriends.org (8.14.9/8.14.9/submit) id u1P6CAYx022498; Thu, 25 Feb 2016 06:12:10 GMT From: arnold@skeeve.com Message-Id: <201602250612.u1P6CAYx022498@freefriends.org> X-Authentication-Warning: frenzy.freefriends.org: arnold set sender to arnold@skeeve.com using -f Date: Wed, 24 Feb 2016 23:12:10 -0700 To: santiagorr@riseup.net, jim@meyering.net, eggert@cs.ucla.edu Subject: Re: bug#22793: grep -E assertion failure with back references References: <20160224161854.GA20452@riseup.net> <56CE08AF.2080507@cs.ucla.edu> In-Reply-To: <56CE08AF.2080507@cs.ucla.edu> User-Agent: Heirloom mailx 12.4 7/29/08 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 22793 Cc: 22793@debbugs.gnu.org, 186568@bugs.debian.org X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.3 (--) Paul Eggert wrote: > With recent 'grep' you can work around the problem by configuring > --with-included-regex. Not so. I did a fresh ./boostrap ./configure --with-included-regex make and it still core dumps: $ echo abc | ./src/grep -E '(.*)(.*)(.*)\3\2\1' grep: regexec.c:1413: pop_fail_stack: Assertion `((Idx) (num) < ((Idx) -2))' failed. Aborted (core dumped) I looked at it in a debugger fs->num before the --fs->num executes looks to be -1. Thanks, Arnold From debbugs-submit-bounces@debbugs.gnu.org Thu Feb 25 02:55:37 2016 Received: (at control) by debbugs.gnu.org; 25 Feb 2016 07:55:37 +0000 Received: from localhost ([127.0.0.1]:44721 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aYqlt-0006FQ-MI for submit@debbugs.gnu.org; Thu, 25 Feb 2016 02:55:37 -0500 Received: from zimbra.cs.ucla.edu ([131.179.128.68]:33539) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aYqlr-0006FB-3V for control@debbugs.gnu.org; Thu, 25 Feb 2016 02:55:35 -0500 Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 01236160D55 for ; Wed, 24 Feb 2016 23:55:29 -0800 (PST) Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id 33-5DGM9GYVx for ; Wed, 24 Feb 2016 23:55:28 -0800 (PST) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 5AD73160FD5 for ; Wed, 24 Feb 2016 23:55:28 -0800 (PST) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id xLzcXpj_u5DA for ; Wed, 24 Feb 2016 23:55:28 -0800 (PST) Received: from [192.168.1.9] (pool-100-32-155-148.lsanca.fios.verizon.net [100.32.155.148]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 3BBFE160D55 for ; Wed, 24 Feb 2016 23:55:28 -0800 (PST) To: control@debbugs.gnu.org From: Paul Eggert Subject: unmerge 22793 Organization: UCLA Computer Science Department Message-ID: <56CEB370.8050503@cs.ucla.edu> Date: Wed, 24 Feb 2016 23:55:28 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -0.0 (/) X-Debbugs-Envelope-To: control X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -0.0 (/) unmerge 22793 thanks I merged this one with 21513 by mistake. From debbugs-submit-bounces@debbugs.gnu.org Thu Feb 25 03:02:03 2016 Received: (at 22793) by debbugs.gnu.org; 25 Feb 2016 08:02:04 +0000 Received: from localhost ([127.0.0.1]:44728 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aYqs7-0007zo-JY for submit@debbugs.gnu.org; Thu, 25 Feb 2016 03:02:03 -0500 Received: from zimbra.cs.ucla.edu ([131.179.128.68]:33707) by debbugs.gnu.org with esmtp (Exim 4.84) (envelope-from ) id 1aYqs4-0007tl-P1; Thu, 25 Feb 2016 03:02:01 -0500 Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 2B861160D55; Thu, 25 Feb 2016 00:01:54 -0800 (PST) Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id XJShuiUVWj62; Thu, 25 Feb 2016 00:01:52 -0800 (PST) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 6FF07160FD5; Thu, 25 Feb 2016 00:01:52 -0800 (PST) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id n7ucaZGZzzdc; Thu, 25 Feb 2016 00:01:52 -0800 (PST) Received: from [192.168.1.9] (pool-100-32-155-148.lsanca.fios.verizon.net [100.32.155.148]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 3C4C5160D55; Thu, 25 Feb 2016 00:01:52 -0800 (PST) Subject: Re: bug#22793: grep -E assertion failure with back references To: arnold@skeeve.com, santiagorr@riseup.net, jim@meyering.net References: <20160224161854.GA20452@riseup.net> <56CE08AF.2080507@cs.ucla.edu> <201602250612.u1P6CAYx022498@freefriends.org> From: Paul Eggert Organization: UCLA Computer Science Department Message-ID: <56CEB4F0.6070900@cs.ucla.edu> Date: Thu, 25 Feb 2016 00:01:52 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1 MIME-Version: 1.0 In-Reply-To: <201602250612.u1P6CAYx022498@freefriends.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -0.0 (/) X-Debbugs-Envelope-To: 22793 Cc: 22793@debbugs.gnu.org, 186568@bugs.debian.org, 21513@debbugs.gnu.org X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -0.0 (/) arnold@skeeve.com wrote: > Paul Eggert wrote: > >> With recent 'grep' you can work around the problem by configuring >> --with-included-regex. > > Not so. I did a fresh > > ./boostrap > ./configure --with-included-regex > make > > and it still core dumps: > > $ echo abc | ./src/grep -E '(.*)(.*)(.*)\3\2\1' > grep: regexec.c:1413: pop_fail_stack: Assertion `((Idx) (num) < ((Idx) -2))' failed. > Aborted (core dumped) > > I looked at it in a debugger fs->num before the --fs->num executes looks to > be -1. Sorry, you're right. I got confused into thinking that grep Bug#22793 and grep Bug#21513 are the same bugs, but they're not. I have unmerged them. This is still a glibc bug, not a grep bug; it's just that we don't have a fix. grep Bug#21513 is indeed fixed by configuring --with-included-regex. From debbugs-submit-bounces@debbugs.gnu.org Tue Jan 17 16:37:23 2017 Received: (at 22793) by debbugs.gnu.org; 17 Jan 2017 21:37:23 +0000 Received: from localhost ([127.0.0.1]:34118 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cTbRT-0002ML-I2 for submit@debbugs.gnu.org; Tue, 17 Jan 2017 16:37:23 -0500 Received: from zimbra.cs.ucla.edu ([131.179.128.68]:34500) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cTbRP-0002M7-U5 for 22793@debbugs.gnu.org; Tue, 17 Jan 2017 16:37:21 -0500 Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id EC82F16004E; Tue, 17 Jan 2017 13:37:13 -0800 (PST) Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id 7_uI76XX75fu; Tue, 17 Jan 2017 13:37:12 -0800 (PST) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 9998016006A; Tue, 17 Jan 2017 13:37:12 -0800 (PST) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id PRhbkUdYSKeq; Tue, 17 Jan 2017 13:37:12 -0800 (PST) Received: from Penguin.CS.UCLA.EDU (Penguin.CS.UCLA.EDU [131.179.64.200]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 7E69C16004E; Tue, 17 Jan 2017 13:37:12 -0800 (PST) To: 22793@debbugs.gnu.org From: Paul Eggert Subject: Re: grep -E assertion failure with back references Organization: UCLA Computer Science Department Message-ID: Date: Tue, 17 Jan 2017 13:37:12 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.6.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Spam-Score: -3.2 (---) X-Debbugs-Envelope-To: 22793 Cc: Paolo Bonzini , arnold@skeeve.com, santiagorr@riseup.net, Jim Meyering X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -3.2 (---) > This is still a glibc bug, not a grep bug; it's just that we don't have a fix. I finally got around to finding the correct glibc bug report for this grep bug. Here it is: https://sourceware.org/bugzilla/show_bug.cgi?id=11053 I added a comment to the glibc bug, saying that it causes grep Bug#22793 . Paolo Bonzini reported the glibc bug in 2009 and is the current assignee. I think he's pretty busy doing other things. It'd be nice if someone could fix the glibc bug (or at least, fix it in Gnulib), though I suspect that any fix will not be trivial. From debbugs-submit-bounces@debbugs.gnu.org Sat Sep 22 17:23:03 2018 Received: (at control) by debbugs.gnu.org; 22 Sep 2018 21:23:03 +0000 Received: from localhost ([127.0.0.1]:49968 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1g3pMk-0005Ab-VF for submit@debbugs.gnu.org; Sat, 22 Sep 2018 17:23:03 -0400 Received: from zimbra.cs.ucla.edu ([131.179.128.68]:35724) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1g3pMi-00059u-Q8 for control@debbugs.gnu.org; Sat, 22 Sep 2018 17:23:01 -0400 Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 42B3B161489 for ; Sat, 22 Sep 2018 14:22:54 -0700 (PDT) Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id VjT70qtr-S-e for ; Sat, 22 Sep 2018 14:22:53 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 0B73B1615A6 for ; Sat, 22 Sep 2018 14:22:53 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id danI_s04recf for ; Sat, 22 Sep 2018 14:22:52 -0700 (PDT) Received: from Penguin.CS.UCLA.EDU (Penguin.CS.UCLA.EDU [131.179.64.200]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id E759E161489 for ; Sat, 22 Sep 2018 14:22:52 -0700 (PDT) To: GNU bug control From: Paul Eggert Subject: merge two grep bugs Openpgp: preference=signencrypt Autocrypt: addr=eggert@cs.ucla.edu; prefer-encrypt=mutual; keydata= xsFNBEyAcmQBEADAAyH2xoTu7ppG5D3a8FMZEon74dCvc4+q1XA2J2tBy2pwaTqfhpxxdGA9 Jj50UJ3PD4bSUEgN8tLZ0san47l5XTAFLi2456ciSl5m8sKaHlGdt9XmAAtmXqeZVIYX/UFS 96fDzf4xhEmm/y7LbYEPQdUdxu47xA5KhTYp5bltF3WYDz1Ygd7gx07Auwp7iw7eNvnoDTAl KAl8KYDZzbDNCQGEbpY3efZIvPdeI+FWQN4W+kghy+P6au6PrIIhYraeua7XDdb2LS1en3Ss mE3QjqfRqI/A2ue8JMwsvXe/WK38Ezs6x74iTaqI3AFH6ilAhDqpMnd/msSESNFt76DiO1ZK QMr9amVPknjfPmJISqdhgB1DlEdw34sROf6V8mZw0xfqT6PKE46LcFefzs0kbg4GORf8vjG2 Sf1tk5eU8MBiyN/bZ03bKNjNYMpODDQQwuP84kYLkX2wBxxMAhBxwbDVZudzxDZJ1C2VXujC OJVxq2kljBM9ETYuUGqd75AW2LXrLw6+MuIsHFAYAgRr7+KcwDgBAfwhPBYX34nSSiHlmLC+ KaHLeCLF5ZI2vKm3HEeCTtlOg7xZEONgwzL+fdKo+D6SoC8RRxJKs8a3sVfI4t6CnrQzvJbB n6gxdgCu5i29J1QCYrCYvql2UyFPAK+do99/1jOXT4m2836j1wARAQABzSBQYXVsIEVnZ2Vy dCA8ZWdnZXJ0QGNzLnVjbGEuZWR1PsLBfgQTAQIAKAUCTIByZAIbAwUJEswDAAYLCQgHAwIG FQgCCQoLBBYCAwECHgECF4AACgkQ7ZfpDmKqfjRRGw/+Ij03dhYfYl/gXVRiuzV1gGrbHk+t nfrI/C7fAeoFzQ5tVgVinShaPkZo0HTPf18x6IDEdAiO8Mqo1yp0CtHmzGMCJ50o4Grgfjlr 6g/+vtEOKbhleszN2XpJvpwM2QgGvn/laTLUu8PH9aRWTs7qJJZKKKAb4sxYc92FehPu6FOD 0dDiyhlDAq4lOV2mdBpzQbiojoZzQLMQwjpgCTK2572eK9EOEQySUThXrSIz6ASenp4NYTFH s9tuJQvXk9gZDdPSl3bp+47dGxlxEWLpBIM7zIONw4ks4azgT8nvDZxA5IZHtvqBlJLBObYY 0Le61Wp0y3TlBDh2qdK8eYL426W4scEMSuig5gb8OAtQiBW6k2sGUxxeiv8ovWu8YAZgKJfu oWI+uRnMEddruY8JsoM54KaKvZikkKs2bg1ndtLVzHpJ6qFZC7QVjeHUh6/BmgvdjWPZYFTt N+KA9CWX3GQKKgN3uu988yznD7LnB98T4EUH1HA/GnfBqMV1gpzTvPc4qVQinCmIkEFp83zl +G5fCjJJ3W7ivzCnYo4KhKLpFUm97okTKR2LW3xZzEW4cLSWO387MTK3CzDOx5qe6s4a91Zu ZM/j/TQdTLDaqNn83kA4Hq48UHXYxcIh+Nd8k/3w6lFuoK0wrOFiywjLx+0ur5jmmbecBGHc 1xdhAFHOwU0ETIByZAEQAKaF678T9wyH4wjTrV1Pz3cDEoSnV/0ZUrOT37p1dcGyj/IXq1x6 70HRVahAmk0sZpYc25PF9D5GPYHFWlNjuPU96rDndXB3hedmBRhLdC4bAXjI4DV+bmdVe+q/ IMnlZRaVlm9EiMCVAR6w13sReu7qXkW9r3RwY2AzXskp/tAe4BRKr1Zmbvi2nbnQ6epEC42r Rbx0B1EhjbIQZ5JHGk24iPT7LdBgnNmos5wYjzwNlkMQD5T0Ydzhk7J+UxwA5m46mOhRDC2r FV/A0gm5TLy8DXjv/Esc4gYnYai6SQqnUEVh5LuV8YCJBnijs+Tiw71x1icmn6xGI45EugJO gec+rLypYgpVp4x0HI5T88qBRYCkxH3Kg8Qo+EWNA9A4LRQ9DX8njona0gf0s03tocK8kBN6 6UoqqPtHBnc4eMgBymCflK12eKfd2YYxnyg9cZazWA5VslvTxpm76hbg5oiAEH/Vg/8MxHyA nPhfrgwyPrmJEcVBafdspJnYQxBYNco2LFPIhlOvWh8r4at+s+M3Lb26oUTczlgdW1Sf3SDA 77BMRnF0FQyE+7AzV79MBN4ykiqaezQxtaF1Fy/tvkhffSo8u+dwG0EgJh+te38gTcISVr0G IPplLz6YhjrbHrPRF1CN5UuL9DBGjxuN35RLNVEfta6RUFlR6NctTjvrABEBAAHCwWUEGAEC AA8FAkyAcmQCGwwFCRLMAwAACgkQ7ZfpDmKqfjSrHA/+KzAKvTxRhA9MWNLxIyJ7S5uJ16gs T3oCjZrBKGEhKMOGX4O0GA6VOEryO7QRCCYah3oxSG38IAnNeiwJXgU9Bzkk85UGbPEd7HGF /VSeHCQwWou6jqUDTSDvn9YhNTdG0KXPM74aC+xr2Zow1O2mhXihgWKD0Dw+0LYPnUOsQ0KO FxHXXYHmRrS1OZPU59BLvc+TRhIhafSHKLwbXK+6ckkxBx6h8z5ccpG0Qs4bFhdFYnFrEieD LoGmnE2YLhdV6swJ9VNCS6pLiEohT3fm7aXm15tZOIyzMZhHRSAPblXxQ0ZSWjq8oRrcYNFx c4W1URpAkBCOYJoXvQfD5L3lqAl8TCqDUzYxhH/tJhbDdHrqHH767jaDaTB1+Talp/2AMKwc XNOdiklGxbmHVG6YGl6g8Lrbsu9NZEI4yLlHzuikthJWgz+3vZhVGyNlt+HNIoF6CjDL2omu 5cEq4RDHM44QqPk6l7O0pUvN1mT4B+S1b08RKpqm/ff015E37HNV/piIvJlxGAYz8PSfuGCB 1thMYqlmgdhd9/BabGFbGGYHA6U4/T5zqU+f6xHy1SsAQZ1MSKlLwekBIT+4/cLRGqCHjnV0 q5H/T6a7t5mPkbzSrOLSo4puj+IToNjYyYIDBWzhlA19avOa+rvUjmHtD3sFN7cXWtkGoi8b uNcby4U= Organization: UCLA Computer Science Department Message-ID: <75bf6621-bd2f-2b63-6301-a012930196bf@cs.ucla.edu> Date: Sat, 22 Sep 2018 14:22:51 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: control X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -3.3 (---) merge 22793 32806 From debbugs-submit-bounces@debbugs.gnu.org Wed Jan 30 22:22:30 2019 Received: (at control) by debbugs.gnu.org; 31 Jan 2019 03:22:30 +0000 Received: from localhost ([127.0.0.1]:52077 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1gp2vu-0007IF-70 for submit@debbugs.gnu.org; Wed, 30 Jan 2019 22:22:30 -0500 Received: from zimbra.cs.ucla.edu ([131.179.128.68]:36620) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1gp2vs-0007I0-LN for control@debbugs.gnu.org; Wed, 30 Jan 2019 22:22:29 -0500 Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 63165160FE8 for ; Wed, 30 Jan 2019 19:22:23 -0800 (PST) Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id Hlqqq4Nrz2lE for ; Wed, 30 Jan 2019 19:22:22 -0800 (PST) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id B5C4416112F for ; Wed, 30 Jan 2019 19:22:22 -0800 (PST) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id deXO_VnXkVFY for ; Wed, 30 Jan 2019 19:22:22 -0800 (PST) Received: from Penguin.CS.UCLA.EDU (Penguin.CS.UCLA.EDU [131.179.64.200]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 9D54C161113 for ; Wed, 30 Jan 2019 19:22:22 -0800 (PST) To: GNU bug control From: Paul Eggert Subject: 34238 is the same as 22793 Openpgp: preference=signencrypt Autocrypt: addr=eggert@cs.ucla.edu; 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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: control X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -3.3 (---) merge 22793 34238 From debbugs-submit-bounces@debbugs.gnu.org Mon Sep 21 15:51:10 2020 Received: (at control) by debbugs.gnu.org; 21 Sep 2020 19:51:10 +0000 Received: from localhost ([127.0.0.1]:56414 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kKRqA-0004ph-7g for submit@debbugs.gnu.org; Mon, 21 Sep 2020 15:51:10 -0400 Received: from zimbra.cs.ucla.edu ([131.179.128.68]:55400) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kKRq8-0004pV-Oi for control@debbugs.gnu.org; Mon, 21 Sep 2020 15:51:09 -0400 Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 5F6DF16007A for ; Mon, 21 Sep 2020 12:51:03 -0700 (PDT) Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id PJm7cZAs2DtQ for ; Mon, 21 Sep 2020 12:51:02 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id C3DA41600F1 for ; Mon, 21 Sep 2020 12:51:02 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id xAisaI8uf3VA for ; Mon, 21 Sep 2020 12:51:02 -0700 (PDT) Received: from [192.168.1.9] (cpe-23-243-218-95.socal.res.rr.com [23.243.218.95]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 9FA3016007A for ; Mon, 21 Sep 2020 12:51:02 -0700 (PDT) To: control@debbugs.gnu.org From: Paul Eggert Subject: merge 42946 into 22793 Autocrypt: addr=eggert@cs.ucla.edu; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: control X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -3.3 (---) merge 22793 42946