From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Michael Heerdegen Newsgroups: gmane.emacs.bugs Subject: bug#51982: Erroneous handling of local variables in byte-compiled nested lambdas Date: Sat, 20 Nov 2021 05:44:38 +0100 Message-ID: <87y25jo2q1.fsf@web.de> References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="14022"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) Cc: mattiase@acm.org, Stefan Monnier , 51982@debbugs.gnu.org To: Paul Pogonyshev Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sat Nov 20 05:46:10 2021 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 1moIGP-0003Pf-LG for geb-bug-gnu-emacs@m.gmane-mx.org; 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Sat, 20 Nov 2021 05:44:40 +0100 In-Reply-To: (Paul Pogonyshev's message of "Fri, 19 Nov 2021 21:31:13 +0100") X-Provags-ID: V03:K1:UwrhlAbDSqcubECPvw3reGpIk8S5g/tWKxmtbpOCs1asLZJY+RG YGUUgBpacOUSJdWv0bH0OvD1m7I06Oo4SwgPUqLHPLhx8Mw0P9f0NGzbi0Ds1W7XMprHjOv DTXgGC/U6XSUH8v2kvp8RDBHqA8pIuWGxuQO5MgtSCRL142ZSIQVPPMneRtayxcYgy+HwUE EmcB5K+4zK45zFdyPRFUQ== X-UI-Out-Filterresults: notjunk:1;V03:K0:L7kat2YFHQ0=:cm3c3z9ePPIkYQHPlHGdjG r4g0vwaMRuo0nJWktG0laoMj2UTHJcfA1cuT+t/SX4a1u+l57Yp/dd4UASVISxCH8wpz1hScE TE1JN7PA0XrGDt91x6WJCUx6qCTZ+6WZDRCNiWqnaG3lFsQxMUlXR5feN9U2YM/0d0QM63vUc f5vE92zDLWPFIRKUgk4dwBBPy5WZC8+tFUaDdqTtrW+4wu9spwQAPtRn4h9ao4r5Q7AaEEwxO Zt3GQsVKjzcagIwxIFlg95ORwEjyX4PBoNL/iNOML90FJqWMa34GAluSHO/nZfh1bLGR9EjwA M2xPfFNXZZeZ+a6ZW5468u2L8yN7HsLKEoZSzJ7Hfsuz0tZJI18XFDV2yMTA5IEudDqrKZ6an bgCeoVDGJok9YyNY29Js+DfcAaC+EfjZR2RMqL+E04jHL75/Od5eRENY4Qn2AMsd2iI8Qb4pg Poekpmf5Ozex5TUHZ5QEXSHItlaXhOM2oMaXgMQdspS+p/qpI6Zjb+2GqTfRv6J5AAaN8CWRH uXSBwMbtgXdCfcCwP/v3OKw5J142vXnP3QdflZQ4tVDnAoyI8NcAVAHBpcoiDG4alUKXlDkXx OUT6dIKeMAmYzzEWrRs61FGlRGsCo5BthMZLJVfuMoIGDaEoxeymKt0Z/8rGapUSdaqAZUObk tFx0/HtJqbnPwmP6x73N3Jys/cQPgkNtKth3lpVgQf65eN4CK4R8Finbzx60z+sBzRrIzaULN romhfhSuEzqA8hLb49F94D9ru3VicejhjH3j+MO37258JCStE1Fz/eOggSgoiT0SGGxW0Mc0 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" Xref: news.gmane.io gmane.emacs.bugs:220447 Archived-At: Hello Paul, thanks for the report, I can reproduce the issue, there is something going wrong when compiling. I guess this is something for Mattias or Stefan maybe? (CC'd) #+begin_src emacs-lisp ; -*- lexical-binding: t -*- (defun wtf (x) (let ((it 0)) #'(lambda () (let ((fn #'(lambda () it))) (if x (let ((it x)) it) (funcall fn)))))) #+end_src Byte compile: > wtf.el:9:17:Warning: reference to free variable =E2=80=98it=E2=80=99 (funcall (wtf 1)) > Symbol=E2=80=99s value as variable is void: it while expected result is 1. Uncompiled code works as expected. TIA, Michael.