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From: | GNU bug Tracking System |
Subject: | bug#19420: closed (intermittent segfault using grep -P) |
Date: | Wed, 24 Nov 2021 03:04:02 +0000 |
Your message dated Tue, 23 Nov 2021 19:03:08 -0800 with message-id <339e3eb7-0593-6279-11cf-1a5c227d55c7@cs.ucla.edu> and subject line Re: bug#19420: intermittent segfault using grep -P has caused the debbugs.gnu.org bug report #19420, regarding intermittent segfault using grep -P to be marked as done. (If you believe you have received this mail in error, please contact help-debbugs@gnu.org.) -- 19420: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=19420 GNU Bug Tracking System Contact help-debbugs@gnu.org with problems
--- Begin Message ---Subject: intermittent segfault using grep -P Date: Sat, 20 Dec 2014 10:55:24 +0100 When using the following command, *most* of the time I get a Segmentation fault (10 out of 16 times): User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0 € cat grepTxt | grep -P 'b(?:(?!tom).)+' Segmentation fault (core dumped) This happens with the grep version that came with my Linux installation: € grep -V grep (GNU grep) 2.16 I am on: NAME="Ubuntu" VERSION="14.04.1 LTS, Trusty Tahr"But also compiled grep from sources (http://ftp.gnu.org/gnu/grep/grep-2.21.tar.xz) with the same problem.libpcre3:amd64; libpcre3:i386; libpcre3-dev:amd64; libpcrecpp0:amd64 are all 1:8.31-2ubuntu2I tried to reduce the regex and the text as much as possible to still reproduce the issue most of the time, unfortunately the text is still 16893 bytes long. As I don't know if it is OK to attach such a long file, I put it on pastebin, but will expire in a month.http://pastebin.com/download.php?i=jsHskMAA Please advise. Kind regards, JP
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--- Begin Message ---Subject: Re: bug#19420: intermittent segfault using grep -P Date: Tue, 23 Nov 2021 19:03:08 -0800 User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.3.0 I'm closing this old Grep bug report, on two grounds:* I can no longer reproduce the the problem on Fedora 35 x86-64, using Norihiro Tanaka's test case <https://bugs.gnu.org/19420#20>. This suggests the PCRE library has been fixed.* GNU Grep has switched to PCRE2, so PCRE bugs shouldn't matter now. See <https://bugs.gnu.org/47264>.
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