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: AS4713 221.184.0.0/13 X-Spam-Status: No, score=-3.8 required=3.0 tests=AWL,BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS,TRACKER_ID shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from neon.ruby-lang.org (neon.ruby-lang.org [221.186.184.75]) by dcvr.yhbt.net (Postfix) with ESMTP id B2DCC1F4B9 for ; Sun, 12 Jan 2020 18:44:34 +0000 (UTC) Received: from neon.ruby-lang.org (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id ACDC2120B61; Mon, 13 Jan 2020 03:44:21 +0900 (JST) Received: from o1678948x4.outbound-mail.sendgrid.net (o1678948x4.outbound-mail.sendgrid.net [167.89.48.4]) by neon.ruby-lang.org (Postfix) with ESMTPS id 4DA5E1208F8 for ; Mon, 13 Jan 2020 03:44:20 +0900 (JST) Received: by filterdrecv-p3mdw1-56c97568b5-fkvrs with SMTP id filterdrecv-p3mdw1-56c97568b5-fkvrs-20-5E1B690C-3D 2020-01-12 18:44:28.680649679 +0000 UTC m=+2311280.055215847 Received: from herokuapp.com (unknown [3.88.104.96]) by ismtpd0011p1iad2.sendgrid.net (SG) with ESMTP id vWrgd9LST5K2YUVzB3vGjg for ; Sun, 12 Jan 2020 18:44:28.623 +0000 (UTC) Date: Sun, 12 Jan 2020 18:44:28 +0000 (UTC) From: ko1@atdot.net Message-ID: References: Mime-Version: 1.0 X-Redmine-MailingListIntegration-Message-Ids: 72478 X-Redmine-Project: ruby-master X-Redmine-Issue-Id: 16503 X-Redmine-Issue-Author: jnchito X-Redmine-Sender: ko1 X-Mailer: Redmine X-Redmine-Host: bugs.ruby-lang.org X-Redmine-Site: Ruby Issue Tracking System X-Auto-Response-Suppress: All Auto-Submitted: auto-generated X-SG-EID: =?us-ascii?Q?fVTMYOBjtdvXNcWwrscBhLsHItUXVK5L4mtnq0mdcRfgjdZZsmJ9AMU2ezaVZj?= =?us-ascii?Q?wQLdCOwpDIlZqN1AVvgi3GVH0MuMDAhtD3uV+tI?= =?us-ascii?Q?n55G=2FOGBfhrixhsVwS8Q1GIWckh28ai=2Fyp9dxsV?= =?us-ascii?Q?UxwpgCAGIdLgsZgKeRIWXl8CgJN2glvedd85tQh?= =?us-ascii?Q?Hz=2Fk6HRttfnHdT5MOHZNxgEPilnCb6kES7Q=3D=3D?= To: ruby-core@ruby-lang.org X-ML-Name: ruby-core X-Mail-Count: 96815 Subject: [ruby-core:96815] [Ruby master Bug#16503] "ret: 2, hash modified during iteration" error in Ruby 2.7.0 X-BeenThere: ruby-core@ruby-lang.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: Ruby developers List-Id: Ruby developers List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ruby-core-bounces@ruby-lang.org Sender: "ruby-core" Issue #16503 has been updated by ko1 (Koichi Sasada). Status changed from Open to Closed 350dafd56a9cff58d36303aeb7515ab41c5dbbb3 ---------------------------------------- Bug #16503: "ret: 2, hash modified during iteration" error in Ruby 2.7.0 https://bugs.ruby-lang.org/issues/16503#change-83810 * Author: jnchito (Junichi Ito) * Status: Closed * Priority: Normal * Assignee: * Target version: * ruby -v: ruby 2.7.0p0 (2019-12-25 revision 647ee6f091) [x86_64-linux] (heroku-18 stack) * Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN ---------------------------------------- I am running a Rails app on Heroku. After upgrading to Ruby 2.7, I sometimes get `ret: 2, hash modified during iteration` error. The same issue is reported here (I'm using meta-tags gem too): https://github.com/kpumuk/meta-tags/issues/209 This gem deletes elements while iterating hash (HashWithIndifferentAccess actually), so I guess it might involve this error: https://github.com/kpumuk/meta-tags/blob/v2.13.0/lib/meta_tags/renderer.rb#L168 https://github.com/kpumuk/meta-tags/blob/v2.13.0/lib/meta_tags/renderer.rb#L181 https://github.com/kpumuk/meta-tags/blob/v2.13.0/lib/meta_tags/meta_tags_collection.rb#L85 However, this error does not occur every time (sometimes works, sometimes fails), and it didn't occur in Ruby 2.6. So I'm wondering why. Do you have any idea on this? -- https://bugs.ruby-lang.org/