From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#65833: 30.0.50; cl-loop on the intervals uses global var Date: Fri, 08 Sep 2023 16:57:18 -0400 Message-ID: Reply-To: Stefan Monnier Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="5917"; mail-complaints-to="usenet@ciao.gmane.io" To: 65833@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Sep 08 22:58:14 2023 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qeiYP-0001Hp-SW for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 08 Sep 2023 22:58:14 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qeiYC-00088S-Qm; 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Fri, 8 Sep 2023 16:57:33 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1694206651; bh=BGZD6z5HdOzLnutK6Qp1e/EJg0Ipv1I53gjzoqVza5k=; h=From:To:Subject:Date:From; b=FHVC5Sy7XS7TNnwZXSX/fJ0kvKZurnlVyoo74l8azm+v7Ni5afktBusS3shPct9ZD UUq8csChYZgtwreacXpnoSQF8mmCUq9mzTlS/pX4kKaEUwzLqwL14Uvtv9zzRoMFRp 5gBUsd4RoaHcvAWaNXr4AnLPaUKQyS6IhGvb6sFF/9VXUt7mr/Dt4hcM2Wku7sD4+d PwwzcZP18LSHe73u1eBuMfllgRVYdydTbsstciPS65BF9iqqXYKE4jyrZ6B4MLN522 rGIYzLXuMr6mDJ3m3AiAkowV+CdiTb95u3tCv0dMN8OKlzGa9BIsim+DtPdZpr6nIf 3Z0os707pgdtg== Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg2.iro.umontreal.ca (Proxmox) with ESMTP id EA1D880567 for ; Fri, 8 Sep 2023 16:57:31 -0400 (EDT) Original-Received: from pastel (unknown [104.247.229.91]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id CFB9912032C for ; Fri, 8 Sep 2023 16:57:31 -0400 (EDT) Received-SPF: pass client-ip=132.204.25.50; envelope-from=monnier@iro.umontreal.ca; helo=mailscanner.iro.umontreal.ca X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:269823 Archived-At: Package: Emacs Version: 30.0.50 ELISP> (macroexpand '(cl-loop for X being the intervals of B do (FOO))) (cl--block-wrapper (catch '--cl-block-nil-- (cl-block --cl-finish-- (cl--map-intervals (lambda (--cl-var1-- --cl-var2--) (setq X (cons --cl-var1-- --cl-var2--)) (FOO)) B nil nil nil)) nil)) As you can see, this sets fails to declare `X` as being a local variable, so it will affect `X` from the surrounding context. This looping form doesn't exist in Common Lisp, but `for X being` never behaves like that, so this is clearly a bug. Stefan