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=-2.7 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, FORGED_GMAIL_RCVD,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS shortcircuit=no autolearn=no 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 1E1CE1F463 for ; Mon, 30 Dec 2019 00:44:48 +0000 (UTC) Received: from neon.ruby-lang.org (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id 8522E120BAD; Mon, 30 Dec 2019 09:44:31 +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 78F57120BA5 for ; Mon, 30 Dec 2019 09:44:28 +0900 (JST) Received: by filterdrecv-p3mdw1-56c97568b5-2vkp8 with SMTP id filterdrecv-p3mdw1-56c97568b5-2vkp8-20-5E09486E-7 2019-12-30 00:44:30.197755408 +0000 UTC m=+1123283.440346107 Received: from herokuapp.com (unknown [54.145.162.235]) by ismtpd0029p1iad2.sendgrid.net (SG) with ESMTP id bAEt7QZKSNWOtOyWG560kQ for ; Mon, 30 Dec 2019 00:44:30.148 +0000 (UTC) Date: Mon, 30 Dec 2019 00:44:30 +0000 (UTC) From: barrettkingram@gmail.com Message-ID: References: Mime-Version: 1.0 X-Redmine-MailingListIntegration-Message-Ids: 72249 X-Redmine-Project: ruby-master X-Redmine-Issue-Id: 16467 X-Redmine-Issue-Author: barrettkingram X-Redmine-Sender: barrettkingram 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?G+5aOrh6OMFb3DDvzB50JltOd6mCTtfpUUsE9C75ddK5G+t928UTx2W6WBIpau?= =?us-ascii?Q?XyQpeVWl7w+6kzkBXnHKNKca0wiBOrwx2fQJr1l?= =?us-ascii?Q?xzxAKQu79IwAbW3u+rq9NvrxTB4C5vx8KoRNQE4?= =?us-ascii?Q?M6jrr=2FFRSC6W1BasS6+9P1RwX6T0XCnHilMAPHc?= =?us-ascii?Q?b+8TEYU4Hneiwx1z8FTGE11tCibATvIr=2FEHj1Sm?= =?us-ascii?Q?ZdvhbSFCXFzddl13k=3D?= To: ruby-core@ruby-lang.org X-ML-Name: ruby-core X-Mail-Count: 96586 Subject: [ruby-core:96586] [Ruby master Bug#16467] Fetching a class variable with instance_eval fails with NameError 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 #16467 has been reported by barrettkingram (Barrett Ingram). ---------------------------------------- Bug #16467: Fetching a class variable with instance_eval fails with NameError https://bugs.ruby-lang.org/issues/16467 * Author: barrettkingram (Barrett Ingram) * Status: Open * Priority: Normal * Assignee: * Target version: * ruby -v: ruby 2.7.0p0 (2019-12-25 revision 647ee6f091) [x86_64-darwin18] * Backport: 2.5: UNKNOWN, 2.6: UNKNOWN ---------------------------------------- Trying to fetch a class variable using `instance_eval` fails with `uninitialized class variable @variable_name in Object (NameError)`. Reproduction program: ``` ruby class FooClass def initialize @foo = "foo" @@bar = "bar" end def get_bar @@bar end end foo = FooClass.new puts foo.instance_eval("@foo") # prints "foo" puts foo.get_bar # prints "bar" puts foo.instance_eval("@@bar") # raises uninitialized class variable @@bar in Object (NameError) ``` -- https://bugs.ruby-lang.org/