From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-3.2 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_EF,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 Received: from zero.zsh.org (zero.zsh.org [IPv6:2a02:898:31:0:48:4558:7a:7368]) by inbox.vuxu.org (Postfix) with ESMTP id 5A75826C4C for ; Mon, 4 Mar 2024 07:29:52 +0100 (CET) ARC-Seal: i=1; cv=none; a=rsa-sha256; d=zsh.org; s=rsa-20210803; t=1709533792; b=CqJ8o+pwTeR5BJAJrkbCTzi6rAbeVDZqHy724HTOhvlVlcwAaAdLdk8apuoPKlGnb/9R8qP8aR yPy8iZ9npXbIeG57ZifMPQJtQ5gRdIDjRFHuKaywjCZGcmI50h4/AHhyNPHpc0ZyaBkWzOj9sO vCDhW2Trif+zjCCwDM4Wov1p+rriFoHVtrbMz5q6yXWwlsdaI3EyYm/vZXe4xfgHJJOWnPBaN4 YWWRGzjMBDFTGGP13piKjjsqZxMpqYTw8RlOQZq1wkxxPJrQP3lyg1eo9Yiv1vkpd5WhOfkX/A MEh+0tt4weZnRBf6gVNzhCpwe1dLHpQE8w2N2SWgNjLsew==; ARC-Authentication-Results: i=1; zsh.org; iprev=pass (relay7-d.mail.gandi.net) smtp.remote-ip=217.70.183.200; dmarc=none header.from=chazelas.org; arc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed; d=zsh.org; s=rsa-20210803; t=1709533792; bh=oorr86lokBK2DEBPwu/POpmXpDeBC0s8SOcp3QtLNeo=; h=List-Archive:List-Owner:List-Post:List-Unsubscribe:List-Subscribe:List-Help: List-Id:Sender:In-Reply-To:Content-Transfer-Encoding:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:DKIM-Signature; b=rTuvQFpJe9PAZcoGlNFlPF+6lM5ujlReXsEaBT1Ev+Me7TJGE3qfpgAASsWcjLvunagNAGvKDl EwLtuAqgMqI+1N/iwJDX8VX+Rzd/zdNuC2HKV5IWcd0ox2PInuXLtpAZ6f60yY/r6o6omeZK4l JRgaHoM8V/H0eavf4YitU+55F6G45B539xsYTBLDLyBX/30VFUyo33EAMT2F7Dwl5Y/smmWgcQ rGPr31Ot/T8oY9h9PJYc3iPkq4IfmsM39nLg/wl04Pa1+wV87Skgavod3tE9+uZY/TrYhVregn v8vSeQSmaPOIuiGPx4z7ueia+QqjwjqE/RHQZRbjwZFbbg==; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=zsh.org; s=rsa-20210803; h=List-Archive:List-Owner:List-Post:List-Unsubscribe: List-Subscribe:List-Help:List-Id:Sender:In-Reply-To:Content-Transfer-Encoding :Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To:From:Date: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID; bh=ri5B6OFXplK91GTx0bFu6TjNDYfNLAXhVS1Cjx97ASY=; b=Km1Wgue758O5uMTS+8ovvm1cbn 0pr+5TjWvoG+FoNy8SUoeScsOvFMmL2sbXnbi8KHg04aeygqu8yVDX/sK85JV+Dr5Hw84fWDYW23+ HNleYAP3RUW8h3DjyNfkaMBfAnBY0Rve36wNI21End89OIvL3HX5O27EiQIfHpXTCKhjTPIpZnCs/ p0XRUMzKYQZgLcr/FgGnZ60PtQQEsTZiTPmOrf9bq7ZuhW9ITb/rXj2necvZAlaAxkfRfJx0iMUn9 i/kfH4jnpJK5BqPIkzdwvAkpCaBXxYEbxaA2BEy+ufNIs+eldxcSJ2XDvF2ItBkHKsvSDUwJOMHwc au82GExA==; Received: by zero.zsh.org with local id 1rh1pf-000IVo-Ub; Mon, 04 Mar 2024 06:29:51 +0000 Authentication-Results: zsh.org; iprev=pass (relay7-d.mail.gandi.net) smtp.remote-ip=217.70.183.200; dmarc=none header.from=chazelas.org; arc=none Received: from relay7-d.mail.gandi.net ([217.70.183.200]:59051) by zero.zsh.org with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) id 1rh1p8-000IC8-21; Mon, 04 Mar 2024 06:29:19 +0000 Received: by mail.gandi.net (Postfix) with ESMTPSA id F365A20002; Mon, 4 Mar 2024 06:29:16 +0000 (UTC) Date: Mon, 4 Mar 2024 06:29:14 +0000 From: Stephane Chazelas To: Bart Schaefer Cc: Zsh hackers list Subject: Re: [PATCH] Fix crash on unset-through-nameref Message-ID: <20240304062914.kn6wquvgog3lefom@chazelas.org> Mail-Followup-To: Bart Schaefer , Zsh hackers list References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-GND-Sasl: stephane@chazelas.org X-Seq: 52660 Archived-At: X-Loop: zsh-workers@zsh.org Errors-To: zsh-workers-owner@zsh.org Precedence: list Precedence: bulk Sender: zsh-workers-request@zsh.org X-no-archive: yes List-Id: List-Help: , List-Subscribe: , List-Unsubscribe: , List-Post: List-Owner: List-Archive: 2024-03-03 21:37:34 -0800, Bart Schaefer: > On Sun, Mar 3, 2024 at 2:58 PM Bart Schaefer wrote: > > > > On Sun, Mar 3, 2024 at 12:27 PM Stephane Chazelas wrote: > > > > > > It segfaults with zsh -x though > > > > I'll have a look at that later, thanks. > > Variation of the same problem reported by Jun T. when unsetting the > array part of a tied pair. [...] Thanks. That seems to fix it. There's however a behaviour I can't explain: $ ./Src/zsh -c 'f() { typeset -n v=$1; unset v; typeset -p w; v=(); }; w=1; f w; typeset -p w' typeset -g w typeset -a w=( ) $ ./Src/zsh -c 'f() { typeset -n v=$1; unset v; typeset -p w; v=(); }; v=1; w=1; f w; typeset -p w' typeset -g w f: w: attempt to assign array value to non-array The behaviour of that v=() seems to be influenced by the fact that v was declared as scalar in the global scope. See also: $ ./Src/zsh -c 'myunset() { typeset -n v=$1; unset v; }; export x=1; myunset x; typeset -p x; x=2; typeset -p x' export x export x=2 That shows an unset through a nameref in a different scope doesn't do a full unset: the variable remains declared and retains its attributes (also evidenced by that "typeset -p w"). -- Stephane