From owner-freebsd-current@FreeBSD.ORG  Mon May 28 19:45:18 2012
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 51C1A1065670
	for <freebsd-current@freebsd.org>; Mon, 28 May 2012 19:45:18 +0000 (UTC)
	(envelope-from dim@FreeBSD.org)
Received: from tensor.andric.com (tensor.andric.com [87.251.56.140])
	by mx1.freebsd.org (Postfix) with ESMTP id 070E68FC17
	for <freebsd-current@freebsd.org>; Mon, 28 May 2012 19:45:18 +0000 (UTC)
Received: from [IPv6:2001:7b8:3a7:0:4c1c:92fb:538c:83ed] (unknown
	[IPv6:2001:7b8:3a7:0:4c1c:92fb:538c:83ed])
	(using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits))
	(No client certificate requested)
	by tensor.andric.com (Postfix) with ESMTPSA id A5DB15C59;
	Mon, 28 May 2012 21:45:16 +0200 (CEST)
Message-ID: <4FC3D5C9.5090807@FreeBSD.org>
Date: Mon, 28 May 2012 21:45:13 +0200
From: Dimitry Andric <dim@FreeBSD.org>
Organization: The FreeBSD Project
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64;
	rv:13.0) Gecko/20120522 Thunderbird/13.0
MIME-Version: 1.0
To: Sevan / Venture37 <venture37@gmail.com>
References: <4FBE6C22.6080109@gmail.com> <4FBE8A4D.9000607@FreeBSD.org>
	<4FBE9EFA.5050906@gmail.com>
In-Reply-To: <4FBE9EFA.5050906@gmail.com>
X-Enigmail-Version: 1.5a1pre
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Cc: freebsd-current@freebsd.org
Subject: Re: Kernel builds failing with lots of "failed to retrieve array
 bounds" errors
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 28 May 2012 19:45:18 -0000

On 2012-05-24 22:50, Sevan / Venture37 wrote:
> On 24/05/2012 20:21, Dimitry Andric wrote:
>> I've seen these too, and it seems clang produces debug info which
>> ctfconvert can't handle, for some reason.  However, in my case, the
>> kernel build doesn't abort at all, it continues and all the object files
>> seem to work just fine.
> 
> Updated to r235926 & kernel build completed successfully.

Note, in r236149 I have pulled in a change from upstream clang, which
should fix the root cause of the "failed to retrieve array bounds"
messages.

For flexible array members (e.g. arrays at the end of a struct with no
specified size), clang didn't produce correct debug information.  This
confused ctfconvert, causing it to bail out.