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=-15.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham 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 26D75C433E0 for ; Wed, 24 Mar 2021 07:44:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E7413619F6 for ; Wed, 24 Mar 2021 07:43:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231426AbhCXHnd (ORCPT ); Wed, 24 Mar 2021 03:43:33 -0400 Received: from mail-lj1-f181.google.com ([209.85.208.181]:39429 "EHLO mail-lj1-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230169AbhCXHn0 (ORCPT ); Wed, 24 Mar 2021 03:43:26 -0400 Received: by mail-lj1-f181.google.com with SMTP id u4so28956514ljo.6 for ; Wed, 24 Mar 2021 00:43:25 -0700 (PDT) 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=cdqTVg+Ahm97YQBNHuCQzwsa15Gkq0Cek2B8TrxC8x8=; b=Hw5Taoui0VLOIhl7qzwEhcb628VapwS8PyNZvsqAA8zGcV7iQHgweVL337QEx6swYu tG6D115nDkzyrtc1jdWcNN7KXCphF1aFOldj5jWjEfo6B40PWJJAtOWMo73VXkIMJ1QI yjzFckJoaOPsfIhWUoYaeDU9wuPaMuu45cqKpQp8yz6p76LfRKT+Dxm9hwmrdMxgvdHE dur4myr8Ew2ifsOIlAaFGtEpD+SVEKsOefZ5m8/xVKnyO3DbTPqSwHE3KVKPx0y8GAQ0 OPquAG0CAmGROPwOq9HRCnQJNcEPQ+LLw7XXt3HD8ZJokDm6nWjyFRWkvICLMdHo4914 cocw== X-Gm-Message-State: AOAM530mXhXhTJGQTo3Ir7Cn4eFKKQ2IPTDE6y7I3JJG1E39XqV6OOj/ OXtmQ0jrQh9xxwBHg0C+gecEqP3CYz4akg== X-Google-Smtp-Source: ABdhPJzhqw7O1cTznOlG1TOhRnhqie4oQq7rnNiEpqFhQKU/KVbqDj709VUrCW/MuInHMQuRBWZr0Q== X-Received: by 2002:a2e:7007:: with SMTP id l7mr1271212ljc.436.1616571797449; Wed, 24 Mar 2021 00:43:17 -0700 (PDT) Received: from [10.68.32.192] (broadband-188-32-236-56.ip.moscow.rt.ru. [188.32.236.56]) by smtp.gmail.com with ESMTPSA id f4sm195108lja.69.2021.03.24.00.43.16 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 24 Mar 2021 00:43:17 -0700 (PDT) Subject: Re: [PATCH] coccinelle: misc: update uninitialized_var.cocci documentation To: Julia Lawall Cc: cocci@systeme.lip6.fr, linux-kernel@vger.kernel.org References: <20210308073018.108487-1-efremov@linux.com> From: Denis Efremov Message-ID: Date: Wed, 24 Mar 2021 10:43:16 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: <20210308073018.108487-1-efremov@linux.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Ping? On 3/8/21 10:30 AM, Denis Efremov wrote: > Remove the documentation link from the warning message because commit > 3942ea7a10c9 ("deprecated.rst: Remove now removed uninitialized_var") > removed the section from documentation. Update the rule documentation > accordingly. > > Signed-off-by: Denis Efremov > --- > scripts/coccinelle/misc/uninitialized_var.cocci | 15 ++++++++++----- > 1 file changed, 10 insertions(+), 5 deletions(-) > > diff --git a/scripts/coccinelle/misc/uninitialized_var.cocci b/scripts/coccinelle/misc/uninitialized_var.cocci > index 8fa845cefe11..69bbaae47e73 100644 > --- a/scripts/coccinelle/misc/uninitialized_var.cocci > +++ b/scripts/coccinelle/misc/uninitialized_var.cocci > @@ -1,7 +1,9 @@ > // SPDX-License-Identifier: GPL-2.0-only > /// > /// Please, don't reintroduce uninitialized_var(). > -/// From Documentation/process/deprecated.rst: > +/// > +/// From Documentation/process/deprecated.rst, > +/// commit 4b19bec97c88 ("docs: deprecated.rst: Add uninitialized_var()"): > /// For any compiler warnings about uninitialized variables, just add > /// an initializer. Using warning-silencing tricks is dangerous as it > /// papers over real bugs (or can in the future), and suppresses unrelated > @@ -11,6 +13,11 @@ > /// obviously redundant, the compiler's dead-store elimination pass will make > /// sure there are no needless variable writes. > /// > +/// Later, commit 3942ea7a10c9 ("deprecated.rst: Remove now removed > +/// uninitialized_var") removed this section because all initializations of > +/// this kind were cleaned-up from the kernel. This cocci rule checks that > +/// the macro is not explicitly or implicitly reintroduced. > +/// > // Confidence: High > // Copyright: (C) 2020 Denis Efremov ISPRAS > // Options: --no-includes --include-headers > @@ -40,12 +47,10 @@ position p; > p << r.p; > @@ > > -coccilib.report.print_report(p[0], > - "WARNING this kind of initialization is deprecated (https://www.kernel.org/doc/html/latest/process/deprecated.html#uninitialized-var)") > +coccilib.report.print_report(p[0], "WARNING this kind of initialization is deprecated") > > @script:python depends on org@ > p << r.p; > @@ > > -coccilib.org.print_todo(p[0], > - "WARNING this kind of initialization is deprecated (https://www.kernel.org/doc/html/latest/process/deprecated.html#uninitialized-var)") > +coccilib.org.print_todo(p[0], "WARNING this kind of initialization is deprecated") >