From patchwork Wed Jun 19 17:09:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alessandro Zucchelli X-Patchwork-Id: 13704301 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A39E0C27C53 for ; Wed, 19 Jun 2024 17:09:39 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.743952.1150963 (Exim 4.92) (envelope-from ) id 1sJyoM-00054r-EC; Wed, 19 Jun 2024 17:09:30 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 743952.1150963; Wed, 19 Jun 2024 17:09:30 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1sJyoM-00054k-A0; Wed, 19 Jun 2024 17:09:30 +0000 Received: by outflank-mailman (input) for mailman id 743952; Wed, 19 Jun 2024 17:09:29 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1sJyoL-0004ov-BR for xen-devel@lists.xenproject.org; Wed, 19 Jun 2024 17:09:29 +0000 Received: from support.bugseng.com (mail.bugseng.com [162.55.131.47]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id af83f3af-2e5e-11ef-b4bb-af5377834399; Wed, 19 Jun 2024 19:09:28 +0200 (CEST) Received: from delta.bugseng.com.homenet.telecomitalia.it (host-87-17-171-46.retail.telecomitalia.it [87.17.171.46]) by support.bugseng.com (Postfix) with ESMTPSA id 715DF4EE0739; Wed, 19 Jun 2024 19:09:27 +0200 (CEST) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: af83f3af-2e5e-11ef-b4bb-af5377834399 From: Alessandro Zucchelli To: xen-devel@lists.xenproject.org Cc: consulting@bugseng.com, Alessandro Zucchelli , Simone Ballarin , Doug Goldstein , Stefano Stabellini Subject: [PATCH 1/2] automation/eclair_analysis: deviate MISRA C Rule 21.2 Date: Wed, 19 Jun 2024 19:09:09 +0200 Message-Id: <5b8364528a9ece8fec9f0e70bee81c2ea94c1820.1718816397.git.alessandro.zucchelli@bugseng.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 Rule 21.2 reports identifiers reserved for the C and POSIX standard libraries: all xen's translation units are compiled with option -nostdinc, this guarantees that these libraries are not used, therefore a justification is provided for allowing uses of such identifiers in the project. Builtins starting with "__builtin_" still remain available. No functional change. Signed-off-by: Alessandro Zucchelli --- automation/eclair_analysis/ECLAIR/deviations.ecl | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/automation/eclair_analysis/ECLAIR/deviations.ecl b/automation/eclair_analysis/ECLAIR/deviations.ecl index 447c1e6661..9fa9a7f01c 100644 --- a/automation/eclair_analysis/ECLAIR/deviations.ecl +++ b/automation/eclair_analysis/ECLAIR/deviations.ecl @@ -487,6 +487,17 @@ leads to a violation of the Rule are deviated." # Series 21. # +-doc_begin="Rules 21.1 and 21.2 report identifiers reserved for the C and POSIX +standard libraries: if these libraries are not used there is no reason to avoid such +identifiers. All xen's translation units are compiled with option -nostdinc, +this guarantees that these libraries are not used. Some compilers could perform +optimization using built-in functions: this risk is partially addressed by +using the compilation option -fno-builtin. Builtins starting with \"__builtin_\" +still remain available." +-config=MC3R1.R21.1,macros={safe , "!^__builtin_$" } +-config=MC3R1.R21.2,declarations+={safe, "!^__builtin_.*$"} +-doc_end + -doc_begin="Xen does not use the functions provided by the Standard Library, but implements a set of functions that share the same names as their Standard Library equivalent. The implementation of these functions is available in source form, so the undefined, unspecified