From owner-svn-src-head@FreeBSD.ORG  Sun May 26 11:03:36 2013
Return-Path: <owner-svn-src-head@FreeBSD.ORG>
Delivered-To: svn-src-head@FreeBSD.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by hub.freebsd.org (Postfix) with ESMTP id 0A008910;
 Sun, 26 May 2013 11:03:36 +0000 (UTC)
 (envelope-from theraven@FreeBSD.org)
Received: from theravensnest.org (theraven.freebsd.your.org [216.14.102.27])
 by mx1.freebsd.org (Postfix) with ESMTP id D0278224;
 Sun, 26 May 2013 11:03:35 +0000 (UTC)
Received: from [192.168.0.2]
 (cpc27-cmbg15-2-0-cust235.5-4.cable.virginmedia.com [86.27.188.236])
 (authenticated bits=0)
 by theravensnest.org (8.14.5/8.14.5) with ESMTP id r4QB3NvA031023
 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO);
 Sun, 26 May 2013 11:03:25 GMT (envelope-from theraven@FreeBSD.org)
Content-Type: text/plain; charset=us-ascii
Mime-Version: 1.0 (Mac OS X Mail 6.3 \(1503\))
Subject: Re: svn commit: r250986 - head/sys/dev/usb
From: David Chisnall <theraven@FreeBSD.org>
In-Reply-To: <20130526122502.P847@besplex.bde.org>
Date: Sun, 26 May 2013 12:02:09 +0100
Content-Transfer-Encoding: 7bit
Message-Id: <9848640B-3442-45E5-A59E-FFFABA992CB1@FreeBSD.org>
References: <201305251709.r4PH9xfv015285@svn.freebsd.org>
 <CAMBSHm_EgRxbjvTQOu2EDMN+MtEJzzbTKSmRKPa9+0j3AkqCfQ@mail.gmail.com>
 <20130526122502.P847@besplex.bde.org>
To: Bruce Evans <brde@optusnet.com.au>
X-Mailer: Apple Mail (2.1503)
Cc: "svn-src-head@freebsd.org" <svn-src-head@FreeBSD.org>, mdf@FreeBSD.org,
 "svn-src-all@freebsd.org" <svn-src-all@FreeBSD.org>,
 "src-committers@freebsd.org" <src-committers@FreeBSD.org>,
 Hans Petter Selasky <hselasky@FreeBSD.org>
X-BeenThere: svn-src-head@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: SVN commit messages for the src tree for head/-current
 <svn-src-head.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-head>
List-Post: <mailto:svn-src-head@freebsd.org>
List-Help: <mailto:svn-src-head-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 26 May 2013 11:03:36 -0000

On 26 May 2013, at 03:45, Bruce Evans <brde@optusnet.com.au> wrote:

> Hmm, it would be useful to have a compiler flag for initializing all
> local variables to trap representations on entry to functions. 

The clang memory sanitizer does this.

David