From owner-freebsd-ports@FreeBSD.ORG  Tue Sep  7 09:45:25 2010
Return-Path: <owner-freebsd-ports@FreeBSD.ORG>
Delivered-To: freebsd-ports@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 1FD341065698
	for <freebsd-ports@freebsd.org>; Tue,  7 Sep 2010 09:45:25 +0000 (UTC)
	(envelope-from alp@rsu.ru)
Received: from mail.r61.net (mail.r61.net [195.208.245.249])
	by mx1.freebsd.org (Postfix) with ESMTP id 7C70B8FC13
	for <freebsd-ports@freebsd.org>; Tue,  7 Sep 2010 09:45:24 +0000 (UTC)
Received: from pyhalov.cc.rsu.ru (pyhalov.cc.rsu.ru [195.208.252.128])
	(authenticated bits=0)
	by mail.r61.net (8.14.4/8.14.1) with ESMTP id o8797wNb034381
	(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT)
	for <freebsd-ports@freebsd.org>; Tue, 7 Sep 2010 13:07:58 +0400 (MSD)
	(envelope-from alp@rsu.ru)
Message-ID: <4C8600EE.4010000@rsu.ru>
Date: Tue, 07 Sep 2010 13:07:58 +0400
From: Alexander Pyhalov <alp@rsu.ru>
User-Agent: Thunderbird 2.0.0.23 (X11/20091202)
MIME-Version: 1.0
To: freebsd-ports@freebsd.org
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Subject: libthr and libc
X-BeenThere: freebsd-ports@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Porting software to FreeBSD <freebsd-ports.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-ports>,
	<mailto:freebsd-ports-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-ports>
List-Post: <mailto:freebsd-ports@freebsd.org>
List-Help: <mailto:freebsd-ports-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-ports>,
	<mailto:freebsd-ports-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 07 Sep 2010 09:45:25 -0000

Hello.
I found out interesting thing yesterday. I use 8.0-stable and observed 
the same behavior on 8.1-release.
I tried to create ecpg (embedded SQL) program for PostgreSQL. The 
program linked but gave strange error (sqlca structure wasn't passed 
correctly to user program). I found out that the reason was in threads 
behavior - each time we called pthread_once (inside ecpglib) it didn't 
work. Program linked to libc.so and called some stubs from it. When I 
realised it, I linked program with libthr, and it started work correctly.
Can someone explain why this stubs are in libc? Why didn't linker just 
throw a linking error?
-- 
С уважением,
Александр Пыхалов,
системный администратор ЮГИНФО ЮФУ.