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: AS3215 2.6.0.0/16 X-Spam-Status: No, score=-4.0 required=3.0 tests=AWL,BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by dcvr.yhbt.net (Postfix) with ESMTP id 4CDE31F8C4 for ; Tue, 22 Mar 2022 21:12:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235207AbiCVVOQ (ORCPT ); Tue, 22 Mar 2022 17:14:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57524 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230087AbiCVVOO (ORCPT ); Tue, 22 Mar 2022 17:14:14 -0400 Received: from zimbra.cs.ucla.edu (zimbra.cs.ucla.edu [131.179.128.68]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A9FE0633F for ; Tue, 22 Mar 2022 14:12:45 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 48D101600E5; Tue, 22 Mar 2022 14:12:45 -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 uNA81TuDZJvy; Tue, 22 Mar 2022 14:12:44 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 480751600EA; Tue, 22 Mar 2022 14:12:44 -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 52GLFsIhSe1Y; Tue, 22 Mar 2022 14:12:44 -0700 (PDT) Received: from [192.168.1.9] (cpe-172-91-119-151.socal.res.rr.com [172.91.119.151]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 1364E1600E5; Tue, 22 Mar 2022 14:12:44 -0700 (PDT) Content-Type: multipart/mixed; boundary="------------DtKdgZQ0V6OnFGRQlX1hUm0X" Message-ID: <325b7ba6-04a8-0010-a288-a118a820f3c3@cs.ucla.edu> Date: Tue, 22 Mar 2022 14:12:43 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.5.0 Subject: Re: improve performance of PCRE2 bug 2642 bug workaround Content-Language: en-US To: =?UTF-8?Q?Ren=c3=a9_Scharfe?= Cc: Carlo Arenas , git@vger.kernel.org, =?UTF-8?B?w4Z2YXIgQXJuZmrDtnLDsCBCamFybWFzb24=?= , GNU grep developers References: <99b0adb6-26ba-293c-3a8f-679f59e7cb4d@web.de> From: Paul Eggert Organization: UCLA Computer Science Department In-Reply-To: <99b0adb6-26ba-293c-3a8f-679f59e7cb4d@web.de> Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org This is a multi-part message in MIME format. --------------DtKdgZQ0V6OnFGRQlX1hUm0X Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable On 3/22/22 13:26, Ren=C3=A9 Scharfe wrote: > However, the looser check works around another bug, if only by accident= . Thanks for letting me know. In that case, GNU grep should use a looser=20 check too, like Git grep does. I installed the attached into GNU grep. --------------DtKdgZQ0V6OnFGRQlX1hUm0X Content-Type: text/x-patch; charset=UTF-8; name="0001-grep-work-around-another-potential-PCRE2-bug.patch" Content-Disposition: attachment; filename="0001-grep-work-around-another-potential-PCRE2-bug.patch" Content-Transfer-Encoding: base64 RnJvbSBmZjJkMjRiMDgyMjNlNmM3YjcwNGE5MTEyN2JhYzQzOTFhOWI4YWRiIE1vbiBTZXAg MTcgMDA6MDA6MDAgMjAwMQpGcm9tOiBQYXVsIEVnZ2VydCA8ZWdnZXJ0QGNzLnVjbGEuZWR1 PgpEYXRlOiBUdWUsIDIyIE1hciAyMDIyIDE0OjA5OjA1IC0wNzAwClN1YmplY3Q6IFtQQVRD SF0gZ3JlcDogd29yayBhcm91bmQgYW5vdGhlciBwb3RlbnRpYWwgUENSRTIgYnVnCk1JTUUt VmVyc2lvbjogMS4wCkNvbnRlbnQtVHlwZTogdGV4dC9wbGFpbjsgY2hhcnNldD1VVEYtOApD b250ZW50LVRyYW5zZmVyLUVuY29kaW5nOiA4Yml0CgpQb3RlbnRpYWwgcHJvYmxlbSByZXBv cnRlZCBieSBSZW7DqSBTY2hhcmZlIGluOgpodHRwczovL2xvcmUua2VybmVsLm9yZy9naXQv OTliMGFkYjYtMjZiYS0yOTNjLTNhOGYtNjc5ZjU5ZTdjYjRkQHdlYi5kZS9UCiogc3JjL3Bj cmVzZWFyY2guYyAoUGNvbXBpbGUpOiBNaW1pYyBnaXQgZ3JlcOKAmXMgd29ya2Fyb3VuZHMK Zm9yIFBDUkUyIGJ1Z3MgbW9yZSBjbG9zZWx5OyB0aGlzIGlzIG1vcmUgY29uc2VydmF0aXZl LgotLS0KIHNyYy9wY3Jlc2VhcmNoLmMgfCAxMyArKysrKysrLS0tLS0tCiAxIGZpbGUgY2hh bmdlZCwgNyBpbnNlcnRpb25zKCspLCA2IGRlbGV0aW9ucygtKQoKZGlmZiAtLWdpdCBhL3Ny Yy9wY3Jlc2VhcmNoLmMgYi9zcmMvcGNyZXNlYXJjaC5jCmluZGV4IDBjZjgwNGQuLjY5NDc4 MzggMTAwNjQ0Ci0tLSBhL3NyYy9wY3Jlc2VhcmNoLmMKKysrIGIvc3JjL3BjcmVzZWFyY2gu YwpAQCAtMTU0LDE1ICsxNTQsMTYgQEAgUGNvbXBpbGUgKGNoYXIgKnBhdHRlcm4sIGlkeF90 IHNpemUsIHJlZ19zeW50YXhfdCBpZ25vcmVkLCBib29sIGV4YWN0KQogI2lmZGVmIFBDUkUy X01BVENIX0lOVkFMSURfVVRGCiAgICAgICAvKiBDb25zaWRlciBpbnZhbGlkIFVURi04IGFz IGEgYmFycmllciwgaW5zdGVhZCBvZiBlcnJvci4gICovCiAgICAgICBmbGFncyB8PSBQQ1JF Ml9NQVRDSF9JTlZBTElEX1VURjsKLQotIyBpZiAhICgxMCA8IFBDUkUyX01BSk9SICsgKDM2 IDw9IFBDUkUyX01JTk9SKSkKLSAgICAgIC8qIFdvcmsgYXJvdW5kIFBDUkUyIGJ1ZyAyNjQy LiAgKi8KLSAgICAgIGlmIChmbGFncyAmIFBDUkUyX0NBU0VMRVNTKQotICAgICAgICBmbGFn cyB8PSBQQ1JFMl9OT19TVEFSVF9PUFRJTUlaRTsKLSMgZW5kaWYKICNlbmRpZgogICAgIH0K IAorI2lmIGRlZmluZWQgUENSRTJfTUFUQ0hfSU5WQUxJRF9VVEYgJiYgISgxMCA8IFBDUkUy X01BSk9SICsgKDM2IDw9IFBDUkUyX01JTk9SKSkKKyAgLyogV29yayBhcm91bmQgUENSRTIg YnVnIDI2NDIsIGFuZCBhbm90aGVyIGJ1ZyByZXBvcnRlZGx5IGZpeGVkIGluCisgICAgIFBD UkUyIGNvbW1pdCBlMGM2MDI5YTYyZGI5YzIxNjE5NDFlY2RmNDU5MjA1MzgyZDRkMzc5LiAg Ki8KKyAgaWYgKGZsYWdzICYgKFBDUkUyX1VURiB8IFBDUkUyX0NBU0VMRVNTKSkKKyAgICBm bGFncyB8PSBQQ1JFMl9OT19TVEFSVF9PUFRJTUlaRTsKKyNlbmRpZgorCiAgIC8qIEZJWE1F OiBSZW1vdmUgdGhpcyByZXN0cmljdGlvbi4gICovCiAgIGlmIChyYXdtZW1jaHIgKHBhdHRl cm4sICdcbicpICE9IHBhdGxpbSkKICAgICBkaWUgKEVYSVRfVFJPVUJMRSwgMCwgXygidGhl IC1QIG9wdGlvbiBvbmx5IHN1cHBvcnRzIGEgc2luZ2xlIHBhdHRlcm4iKSk7Ci0tIAoyLjMy LjAKCg== --------------DtKdgZQ0V6OnFGRQlX1hUm0X--