From owner-svn-src-all@FreeBSD.ORG  Tue Oct 23 09:05:59 2012
Return-Path: <owner-svn-src-all@FreeBSD.ORG>
Delivered-To: svn-src-all@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
 by hub.freebsd.org (Postfix) with ESMTP id 4327DD44;
 Tue, 23 Oct 2012 09:05:59 +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 E145A8FC18;
 Tue, 23 Oct 2012 09:05:58 +0000 (UTC)
Received: from [IPv6:2001:7b8:3a7:0:4d6a:19cb:16ac:7be0] (unknown
 [IPv6:2001:7b8:3a7:0:4d6a:19cb:16ac:7be0])
 (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits))
 (No client certificate requested)
 by tensor.andric.com (Postfix) with ESMTPSA id 2183A5C59;
 Tue, 23 Oct 2012 11:05:57 +0200 (CEST)
Message-ID: <50865DF3.7060302@FreeBSD.org>
Date: Tue, 23 Oct 2012 11:05:55 +0200
From: Dimitry Andric <dim@FreeBSD.org>
Organization: The FreeBSD Project
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64;
 rv:17.0) Gecko/17.0 Thunderbird/17.0
MIME-Version: 1.0
To: Jan Beich <jbeich@tormail.org>
Subject: Re: svn commit: r241823 - in head: . etc etc/atf etc/mtree lib lib/atf
 lib/atf/libatf-c lib/atf/libatf-c++ libexec libexec/atf libexec/atf/atf-check
 share share/atf share/doc share/doc/atf share/exampl...
References: <201210220118.q9M1Ifh5098857__14926.3614825488$1350868751$gmane$org@svn.freebsd.org>
 <1TQC0L-000AZG-Q5@internal.tormail.org>
 <1TQFrW-0008DN-S8@internal.tormail.org>
 <1TQJtx-000C9z-I6@internal.tormail.org>
In-Reply-To: <1TQJtx-000C9z-I6@internal.tormail.org>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org,
 Marcel Moolenaar <marcel@FreeBSD.org>, src-committers@freebsd.org
X-BeenThere: svn-src-all@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: "SVN commit messages for the entire src tree \(except for &quot;
 user&quot; and &quot; projects&quot; \)" <svn-src-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-all>
List-Post: <mailto:svn-src-all@freebsd.org>
List-Help: <mailto:svn-src-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 23 Oct 2012 09:05:59 -0000

On 2012-10-22 16:58, Jan Beich wrote:
> Dimitry Andric <dim@FreeBSD.org> writes:
>> On 2012-10-22 09:00, Jan Beich wrote:
...
>>> undefined reference to `std::__1::basic_ios<char,
>>> std::__1::char_traits<char> >::clear(unsigned int)'
>>> clang++: error: linker command failed with exit code 1 (use -v to
>>> see invocation)
>> Strange, for me it compiles (with a bunch of warnings, which I have
>> fixed locally), and links just fine.  However, I always use -std=c++11,
>> which -std= flag are you using, if any?
> Adding -std=c++11 doesn't help. Neither yours or Garrett's patches.
> Instead, removing local -finline-functions (implied by -O3) does.

With clang, -O3 does not imply -finline-functions, but it may have some
influence on the threshold for inlining.

This error is still very strange though, and it might be a real bug in
the optimizer at -O3; at this level, it really seems to generate a call
to a function that is declared inline, with the __always_inline
attribute.

For now, I would advise not to use higher levels than -O2.  Meanwhile, I
will take this problem to the llvm/clang guys.