From owner-svn-src-all@FreeBSD.ORG Fri Feb 27 15:30:55 2015 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 069A2720; Fri, 27 Feb 2015 15:30:55 +0000 (UTC) Received: from mail-ig0-x22c.google.com (mail-ig0-x22c.google.com [IPv6:2607:f8b0:4001:c05::22c]) (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 BC45FAE4; Fri, 27 Feb 2015 15:30:54 +0000 (UTC) Received: by igbhl2 with SMTP id hl2so1171939igb.5; Fri, 27 Feb 2015 07:30:54 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc:content-type; bh=UycM9HD+j6s0KM8p0nQt/1tQTJdLdmMdmfAdh5W2jWQ=; b=rLgNrmnVBCCFcnjCqq6DZfAnMOIzpaqDIleuNQULGlyPxk3W2BdaYqtKCHHvO4OiWf o2wN7vwOmTA0wN7lfTq8lkrW/w/UjIWYAzTDrzpc6duq/WAUd/wLWSV6VBlh+tXYijW8 xh4wEqh45xK8Q88JdqihU9fW6BBiVQljEUbqhfQeY+3ifLLGtCN9eKhhSnJZdxJ0dVPW Ka1FOl8N3lRGP6k7GCLPmwjavQh+XRsYlaB7RS4jhB7CWzWLMeNSP0u7c/ehktA+Uq2e qQ2DG1AY2+EeePTvJ9NwmQDKm5Fb3DL4tpilcQHqK5RJgZvd9Tw7qEXISlbxX+uzpu8x no0Q== X-Received: by 10.43.88.8 with SMTP id ay8mr15932661icc.52.1425051054103; Fri, 27 Feb 2015 07:30:54 -0800 (PST) MIME-Version: 1.0 Sender: carpeddiem@gmail.com Received: by 10.107.158.19 with HTTP; Fri, 27 Feb 2015 07:30:33 -0800 (PST) In-Reply-To: References: <201502270256.t1R2uxnv085328@svn.freebsd.org> <20150227082257.3fb1081c@bender.Home> <20150227202646.I2088@besplex.bde.org> From: Ed Maste Date: Fri, 27 Feb 2015 10:30:33 -0500 X-Google-Sender-Auth: Qc-OVCet0c2gDhL7fKtLQTSoUms Message-ID: Subject: Re: svn commit: r279349 - head/sys/kern To: Benjamin Kaduk Content-Type: text/plain; charset=UTF-8 Cc: "svn-src-head@freebsd.org" , "svn-src-all@freebsd.org" , "src-committers@freebsd.org" , Andrew Turner , Bruce Evans X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 Feb 2015 15:30:55 -0000 On 27 February 2015 at 10:12, Benjamin Kaduk wrote: > > As of r278229, the kernel is compiled with -fwrapv, so signed integer > overflow in the FreeBSD kernel is defined behavior. This is primarily a workaround to accommodate existing code though; it's not a result of an explicit decision that we want to support signed integer overflow. -Ed