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=-21.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT,USER_IN_DEF_DKIM_WL 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 F04E2C31E5B for ; Mon, 17 Jun 2019 17:28:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CB8DD208C0 for ; Mon, 17 Jun 2019 17:28:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="XnshdqX+" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728150AbfFQR2g (ORCPT ); Mon, 17 Jun 2019 13:28:36 -0400 Received: from mail-qk1-f201.google.com ([209.85.222.201]:44808 "EHLO mail-qk1-f201.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726384AbfFQR2f (ORCPT ); Mon, 17 Jun 2019 13:28:35 -0400 Received: by mail-qk1-f201.google.com with SMTP id c207so9709811qkb.11 for ; Mon, 17 Jun 2019 10:28:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:message-id:mime-version:subject:from:to:cc; bh=iTRQxecWi31E9RUGi1F0DNGuHKrwwalrM0GzyTsUNjA=; b=XnshdqX+g/4Ydbw0GNvRY2ZN060BENLjJ668EKRsXXV5B4I8IkwgOaZgy1o3ub/oQ5 cemtIn5zdTy/D5pNuss5JXgK3ynyOjdlKbUPH4Fv67QOvDg8bh6I5PEtuA8JuTGguql8 v3dzh9FcTK0K+4g27TdW8t1o7yQ8FPeqlBbk3FeZ1EByg9uuATgpFU/p5Dh3hC83kBzL mdLdaGDObwDMyhAfIS++GeflIKrb4DtXauQhFUjmflX9x3RVwpOxzbc73QxbZHCc6ZBk idRa5w9qf48ezMvarkwECVpprkdoy7XIQ46VFa5lp1ihrkCDDM6gOFHDZkITRwOLB7+u BgIQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=iTRQxecWi31E9RUGi1F0DNGuHKrwwalrM0GzyTsUNjA=; b=cjlc7FVl4u5yWLhgDga6vM8N94SGc8d3O4KyZNXCfB1PekeWCwdZI9CSyjvvrT4vh8 K+7l5mAWteARIZMx8ikh35FP/1GC35mCip3UJwOUBFdB49CbMIDz6fYCH0nXphYqRCk6 g5mW5U1J03um4k/uCtThP7q7DgH07kolwA71K6s8HkW8rtflzYJ40VlHD2k0DCOBkUFS VWjvJUUmu2kN7yHqYwDTW7EPte70mAQubcVJvJMMhrMAwIxk26RdAi1SIq0ce3BIczIh yNb2VkHyMAeUFgLFeljejgfHbAvMQgd2PJl8U9wSWn5S4E9XNWrS/OOeJMNKAuKj5WzE WsOg== X-Gm-Message-State: APjAAAXiPl56vEiL0FSxMzlAml7CQkp0f4WXwjGKZOM1Fzcqm4U95Fmb bEiWy+piINNctHuzw99btPoPW27qXw== X-Google-Smtp-Source: APXvYqwIh5dU3Z3tUjLmjOX+35JiS3tHnfM98yEdZlZvD4i1HLYa5bSH3fVsAdhDQxWihDN9mLx8HNfh/A== X-Received: by 2002:ac8:3267:: with SMTP id y36mr93487008qta.293.1560792514307; Mon, 17 Jun 2019 10:28:34 -0700 (PDT) Date: Mon, 17 Jun 2019 10:28:29 -0700 Message-Id: <20190617172829.164520-1-nhuck@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.22.0.410.gd8fdbe21b5-goog Subject: [PATCH] kbuild: Remove unnecessary -Wno-unused-value From: Nathan Huckleberry To: yamada.masahiro@socionext.com, michal.lkml@markovi.net Cc: linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, Nathan Huckleberry , Nick Desaulniers , clang-built-linux@googlegroups.com Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This flag turns off several other warnings that would be useful. Most notably -warn_unused_result is disabled. All of the following warnings are currently disabled: UnusedValue |-UnusedComparison |-warn_unused_comparison |-UnusedResult |-warn_unused_result |-UnevaluatedExpression |-PotentiallyEvaluatedExpression |-warn_side_effects_typeid |-warn_side_effects_unevaluated_context |-warn_unused_expr |-warn_unused_voidptr |-warn_unused_container_subscript_expr |-warn_unused_call With this flag removed there are ~10 warnings. Patches have been submitted for each of these warnings. Reported-by: Nick Desaulniers Cc: clang-built-linux@googlegroups.com Link: https://github.com/ClangBuiltLinux/linux/issues/520 Signed-off-by: Nathan Huckleberry --- scripts/Makefile.extrawarn | 1 - 1 file changed, 1 deletion(-) diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn index 3ab8d1a303cd..b293246e48fe 100644 --- a/scripts/Makefile.extrawarn +++ b/scripts/Makefile.extrawarn @@ -68,7 +68,6 @@ else ifdef CONFIG_CC_IS_CLANG KBUILD_CFLAGS += -Wno-initializer-overrides -KBUILD_CFLAGS += -Wno-unused-value KBUILD_CFLAGS += -Wno-format KBUILD_CFLAGS += -Wno-sign-compare KBUILD_CFLAGS += -Wno-format-zero-length -- 2.22.0.410.gd8fdbe21b5-goog