From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B31F1C43461 for ; Sun, 6 Sep 2020 16:43:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 61C6F207BB for ; Sun, 6 Sep 2020 16:43:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Zk3XZGFA" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726209AbgIFQni (ORCPT ); Sun, 6 Sep 2020 12:43:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41052 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725841AbgIFQnh (ORCPT ); Sun, 6 Sep 2020 12:43:37 -0400 Received: from mail-wr1-x441.google.com (mail-wr1-x441.google.com [IPv6:2a00:1450:4864:20::441]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D771CC061573 for ; Sun, 6 Sep 2020 09:43:35 -0700 (PDT) Received: by mail-wr1-x441.google.com with SMTP id k15so12424039wrn.10 for ; Sun, 06 Sep 2020 09:43:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=oSe7Rh5C3nyTeivlg6P/NMaZkDEXL7xFJOigD9VcOe8=; b=Zk3XZGFAKFlpRJG5rQBJbGrQH7bKYpU3lSyBc2mT4HL2JdB1y9mw2top0HTW1RIPzX 8Pj0ZtaG3iDcsUFxB6nuyCmr4Zsbsp7R/ZQP1bNqvONwkRCPT5mb9p/fsj2r/t+ZaBI0 FeslPtGALVgJjpZvt1meU8Ykf9DcZ+t1pNSahIHakHIDEBq7k60CLKYnI++UCYroEF56 PH1IVmanYPwVt2ttZ3oSfz7pi4/z6mCjRxNNFzxgquwR+BNLlrLKFjDgdIgNddFI3g2r ixLhweiXnQx5oP59JWQ6fuXgL+HKV4ynYlnYF0qPuq72SDWvhAY3hOWmb/nQ52AgVAqs WLJw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=oSe7Rh5C3nyTeivlg6P/NMaZkDEXL7xFJOigD9VcOe8=; b=PGhEiPzVuGk1+3NjLqx73EEZGeyPQRPL7G5v8OoNOpc5eva8amtcjYv5PKZ2+k+PR2 6jz9ICOWhC1YE+6l+6K7QK9BuR+FqdkIKA1v4o5LflEzKmI/NRETBQUUIJ7K+55fAsxW Z708YmVEGaQ4u2S1Ja3CkPXMniUsRFtMp6eu3Cuk5LcUYaJXGYGr3LWzdWmZmli8XzTL a7/OIX8HiORmoIRYrqBETDHqOGhCcCY1TxDvhUtMzQehPDJQ7ug9OdsJsqi4OXAsKP4W ezmHd5RNmHAmmipO+Fc7kEBXnuRPumzGeAoNewhQl27xSEPTvfwux5tliBgKLvtthHSX Bweg== X-Gm-Message-State: AOAM531by0EzO1083RAuMrjPfs3JIJvQ8566pczj4Rn2I4DsBWnVyyCW JjL4LVR3M5N0zjjI5Gi0yGdvE4hGwAdvvw== X-Google-Smtp-Source: ABdhPJwsUxJ0ZIidvIJpuupQt0tUQeT+djF662jCm2P53UO7J3f2Tfk5ITjUn6G85lb5AUONizCnsQ== X-Received: by 2002:a5d:4a48:: with SMTP id v8mr17751990wrs.304.1599410614259; Sun, 06 Sep 2020 09:43:34 -0700 (PDT) Received: from [192.168.1.143] ([170.253.60.68]) by smtp.gmail.com with ESMTPSA id h8sm23582520wrw.68.2020.09.06.09.43.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 06 Sep 2020 09:43:33 -0700 (PDT) Subject: Re: [PATCH 5/7] dlopen.3: Remove unneeded cast To: "Michael Kerrisk (man-pages)" Cc: linux-man@vger.kernel.org References: <20200905151501.609036-1-colomar.6.4.3@gmail.com> <20200905151501.609036-6-colomar.6.4.3@gmail.com> <0e29a44e-f3a5-aa28-a6dd-76f38c6295ec@gmail.com> <8e98e43c-665f-6554-0ee6-41e1fcd5e0ba@gmail.com> From: Alejandro Colomar Message-ID: <9ccab24b-c76f-f981-e0b9-850f8d3bf025@gmail.com> Date: Sun, 6 Sep 2020 18:43:32 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.12.0 MIME-Version: 1.0 In-Reply-To: <8e98e43c-665f-6554-0ee6-41e1fcd5e0ba@gmail.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-man-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-man@vger.kernel.org Hi Michael, On 2020-09-06 17:13, Michael Kerrisk (man-pages) wrote: >> The only thing with the casts is to avoid the warning, but they don't >> avoid the possible undefined behaviour (only in non-POSIX systems). > > Yes. (But, dlopen() is a "UNIX-only" API, and thus non-POSIX > doesn't matter here.) Agreed. The cast is useful in this case. The warning that is completely useless this time. Cheers, Alex.