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=-5.6 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 2AC25C4363D for ; Fri, 2 Oct 2020 08:49:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D57B82072E for ; Fri, 2 Oct 2020 08:49:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="GCrPAB9J" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387602AbgJBItC (ORCPT ); Fri, 2 Oct 2020 04:49:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58666 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387550AbgJBItC (ORCPT ); Fri, 2 Oct 2020 04:49:02 -0400 Received: from mail-wr1-x442.google.com (mail-wr1-x442.google.com [IPv6:2a00:1450:4864:20::442]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B8035C0613D0; Fri, 2 Oct 2020 01:49:01 -0700 (PDT) Received: by mail-wr1-x442.google.com with SMTP id t10so885374wrv.1; Fri, 02 Oct 2020 01:49:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:from:to:cc:references:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=K7eAm5kls60n05g4vOafAYjVrjTDKWTSLwCtfNq5U7w=; b=GCrPAB9JCM+GcuECmdM2g6L33RNDCMeTnk96Sy7QRr1XfpkQRbolqbuoeQ/ZKlMQE8 XEWN8+3+0M/Q5RRyKMMh3cCz+CEPuxRIBKsZWDPjOQlPw41D5a3HUilPMsVKd6tbKCTp TWkArQK1Te+bHUT+8zFq+XnkTb5KCH/U0cS/qU8FSOx+DJ9onp0MapLwGg5wJ80nt9tv 9tnLkWFXHuNQKv3I8ySkX3Xgcy6dRSevLZj4jjqS1+9mXvvoCoXe1SAW0IVQjTUgXz/p XZA3iyiNISiVJIFgxf3k1sOmLYYierho4TNu6oVYHPiueCeYfyI3C+yBAdg84roRFamy Mmvw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:from:to:cc:references:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=K7eAm5kls60n05g4vOafAYjVrjTDKWTSLwCtfNq5U7w=; b=bWWMNsNx9sbOduTKs2ypwMdfI3o2EmVOiad9Rt2Tsyn59YUq4YRgvZiQgu35jwA6V7 E1hE5qty3Zwl1H28pdx4NdfgXrGtx5o6WT7MhI2E/KeOsJY2v1kTFxZKS+sf20+CPCye Pbol0FNX8SVEUEHhwt+A9mvklsbuptKmFrbcsPlByfsI6UMzDYZqHGHXH/FEQFT1KS8H ifNtDHmx82Nk1Vynb/Wx9APm+SvmWJuatu8iCjAo7CNeVU9pYwSH8chBE1ZcsiA97wL1 GtRuQufAtsArct8jB7tkEoVUNVnV/HVNPdsRVo2tdFj6w4JAdSd4XLZDWTCzZCSZT/pX YcUQ== X-Gm-Message-State: AOAM530LGrlRRn2nsSJDVZpmN2TAVZkwDGV3V4mEIbfKktOCYRds5Ojr 8qEFQN1mnJTmp4ci4o2dhhm7YUwXw7A= X-Google-Smtp-Source: ABdhPJxiHP8fC8neI4ZdLiTzpMZHOLYjfesrmeki2/9n/e6Ky8fP3VbEpZJPU4SP2JTIdntsN+GRIw== X-Received: by 2002:a5d:4247:: with SMTP id s7mr1730226wrr.167.1601628540258; Fri, 02 Oct 2020 01:49:00 -0700 (PDT) Received: from [192.168.1.143] ([170.253.60.68]) by smtp.gmail.com with ESMTPSA id q4sm931747wru.65.2020.10.02.01.48.59 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 02 Oct 2020 01:48:59 -0700 (PDT) Subject: Re: [PATCH v2 1/2] system_data_types.7: Add 'void *' From: Alejandro Colomar To: mtk.manpages@gmail.com Cc: Paul Eggert , linux-man@vger.kernel.org, libc-alpha@sourceware.org, gcc@gcc.gnu.org, "linux-kernel@vger.kernel.org" References: <41affebd-3354-9420-0048-bffd14535e95@gmail.com> <20201001154946.104626-2-colomar.6.4.3@gmail.com> <538b683f-01d2-6148-4f1d-1b293eb5cd6b@cs.ucla.edu> <4b86f6e9-0d8a-f14a-73ce-ebbdc9d9edba@gmail.com> Message-ID: <7c55f6cf-8cb1-7b63-30ec-990f8c370bf5@gmail.com> Date: Fri, 2 Oct 2020 10:48:58 +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: <4b86f6e9-0d8a-f14a-73ce-ebbdc9d9edba@gmail.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Michael, On 2020-10-02 10:24, Alejandro Colomar wrote: > On 2020-10-01 19:32, Paul Eggert wrote: > > For 'void *' you should also mention that one cannot use arithmetic on > > void * pointers, so they're special in that way too. > > Good suggestion! > > > Also, you should > > warn that because one can convert from any pointer type to void * and > > then to any other pointer type, it's a deliberate hole in C's > > type-checking. > > Also good.  I'll talk about generic function parameters for this. I think the patch as is now is complete enough to be added. So I won't rewrite it for now. Please review the patch as is, and I'll add more info to this type in the future. Thanks, Alex