From owner-freebsd-hackers@freebsd.org Thu Jan 11 12:06:23 2018 Return-Path: Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 75FFCEA5191 for ; Thu, 11 Jan 2018 12:06:23 +0000 (UTC) (envelope-from ed@nuxi.nl) Received: from mail-yw0-x22b.google.com (mail-yw0-x22b.google.com [IPv6:2607:f8b0:4002:c05::22b]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 37E0C6C6CF for ; Thu, 11 Jan 2018 12:06:23 +0000 (UTC) (envelope-from ed@nuxi.nl) Received: by mail-yw0-x22b.google.com with SMTP id r205so908351ywb.3 for ; Thu, 11 Jan 2018 04:06:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nuxi-nl.20150623.gappssmtp.com; s=20150623; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=pz43Yxp37W5wIPkgmk3ygg3zxn/L1XRNqVd66u1B3dQ=; b=YQxQPq0Fxl5bg18dNVTKZvWFkZSI+qOuPk7r0GzpQx5QxjPcf6QPylc/eHOx+HNOXN zf8RtFGa+dww5gCFvJ1fJHfDvZ1GOu4PivxPBJq3mE+x1xboh59AAd7AjPcsxhuy/x1o v8CH/kWHPkVUVEAtIisUyBdck3PI5FMAS5kVv0NXs+Dw+QcQdFy4KzxrbMUdE5vea02l bZ0NuekRuHNivcbLNJHi2WPKoS2Gb06tIur95sntoLyzXItTHMILEjcCGvxt5ya/3XRx xxqC+jT4ZYlCyq89FSLyEgNb28uqDYm2I467MRgkgTmOyy3p6mg9BlcMPE1+PKWDckk6 +Glw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=pz43Yxp37W5wIPkgmk3ygg3zxn/L1XRNqVd66u1B3dQ=; b=OkbaeLMnY6Tmu28okfInVyWdo8Y/paTMklq0M1jEwnDAVyZ7vtlP2a4mh9VDBmTq5y LA/MHgyIYBG/Uk4cwt0x3hDle6joUZ5hLi7BWmdmhofp/JMJkhdDIwYT10FT2y+B2G1i YmsmdN6aszt+gZ/+/ygGfgXABiF974hxaaSd0+f5oH8kVVSmEGJubh4BeXtbVMVnrQaR OmRsmwyd5b0Cqk2Tg67VkG/uA1sKiTqi0wCVS33F2qkEIqe2L7hUm9YKFtVrXNE/JGHd hT0XffOiJvn3x+yr1YZC9qiE3Ha7R9I6PFB9WWjC19y/D6J4pQcxHuShZst/I91oJ3z0 Ykmw== X-Gm-Message-State: AKGB3mIY3vwUXjdhpb29Mil08pkZTfRa8hEsXzwEEV1d15j4cRIQX77i d2SiX/pmeca1I1InzG5JN7ngfskBcGtgiq/02YkXRg== X-Google-Smtp-Source: ACJfBosgcGhWLPg2GVquB6AWAnk2aOyB1iRrliAIDfqjaO9vr0jraRdfmO4xSijxd1/ho3kMUxxYuBkv7YU90e4ELpU= X-Received: by 10.129.124.2 with SMTP id x2mr11000695ywc.314.1515672382340; Thu, 11 Jan 2018 04:06:22 -0800 (PST) MIME-Version: 1.0 Received: by 10.129.165.10 with HTTP; Thu, 11 Jan 2018 04:05:51 -0800 (PST) In-Reply-To: References: From: Ed Schouten Date: Thu, 11 Jan 2018 13:05:51 +0100 Message-ID: Subject: Re: 1 << 31 redux To: Eitan Adler Cc: FreeBSD Hackers Content-Type: text/plain; charset="UTF-8" X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 11 Jan 2018 12:06:23 -0000 2018-01-11 13:03 GMT+01:00 Eitan Adler : > I'd also like to see if we could find some more general solution, be it a > compiler warning, bit set macro, or otherwise. Does Clang already offer a warning for this? If so, we should consider adding it to WARNS=6. -- Ed Schouten Nuxi, 's-Hertogenbosch, the Netherlands