From owner-freebsd-ports@FreeBSD.ORG Wed Jun 26 21:11:39 2013 Return-Path: Delivered-To: freebsd-ports@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 8E9A6A17; Wed, 26 Jun 2013 21:11:39 +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 4C7281D53; Wed, 26 Jun 2013 21:11:39 +0000 (UTC) Received: from [IPv6:2001:7b8:3a7::acbc:c165:3b28:a78a] (unknown [IPv6:2001:7b8:3a7:0:acbc:c165:3b28:a78a]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by tensor.andric.com (Postfix) with ESMTPSA id 532B55C43; Wed, 26 Jun 2013 23:11:32 +0200 (CEST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 6.5 \(1508\)) Subject: Re: Global destructor order problems (was: Re: Are ports supposed to build and run on 10-CURRENT?) From: Dimitry Andric In-Reply-To: <20130626210534.GY91021@kib.kiev.ua> Date: Wed, 26 Jun 2013 23:11:34 +0200 Content-Transfer-Encoding: quoted-printable Message-Id: References: <20130613031535.4087d7f9@bsd64.grem.de> <20130626015508.426ab5b9@bsd64.grem.de> <51CAADB8.7090603@FreeBSD.org> <20130626133149.4835f14a@bsd64.grem.de> <7CD9075C-F8D6-41C1-8D21-8B10DF866ECE@FreeBSD.org> <20130626204521.GU91021@kib.kiev.ua> <6900C006-2A57-4EAF-B19A-629A85CBA001@FreeBSD.org> <20130626210534.GY91021@kib.kiev.ua> To: Konstantin Belousov X-Mailer: Apple Mail (2.1508) Cc: Matthias Andree , Brooks Davis , David Chisnall , "freebsd-ports@freebsd.org Ports" , Michael Gmelin X-BeenThere: freebsd-ports@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Porting software to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 26 Jun 2013 21:11:39 -0000 On Jun 26, 2013, at 23:05, Konstantin Belousov = wrote: > On Wed, Jun 26, 2013 at 10:59:24PM +0200, Dimitry Andric wrote: >> On Jun 26, 2013, at 22:45, Konstantin Belousov = wrote: >>> On Wed, Jun 26, 2013 at 09:26:09PM +0200, Dimitry Andric wrote: >>>> This revision is not in 9.1-RELEASE, but it is in 9-STABLE, so the >>>> problem can also be reproduced there. >>> ... >>>> This is roughly gcc 4.3.0 and later. For example, gcc 4.8 = generates: >>> I just tested the thing with gcc 4.8 on up to date stable/9 and = HEAD. >>> In both cases, major tom did not fail, at least not in the peculiar = way. >>> The gcc-generated code passed the PLT address of the corresponding >>> destructor. >>=20 >> That is strange, did you compile the main program with -fPIC? That = is >> the problem case. If you don't compile the main program with -fPIC, = the >> problem will indeed not occur. >=20 > I just used the Makefile provided by the earlier message, and it = contains > the -fPIC flag (which is strange thing to do on its own, binaries = should > use -fPIE). >=20 > This is how the registration for the outer dtr looks for me, gcc = 4.8.1/i386: >=20 > 0x08048763 <+42>: call 0x8048520 <_ZN5OuterC1Ev@plt> > 0x08048768 <+47>: lea 0x28(%ebx),%eax > 0x0804876e <+53>: mov %eax,0x8(%esp) > 0x08048772 <+57>: lea 0x34(%ebx),%eax > 0x08048778 <+63>: mov %eax,0x4(%esp) > 0x0804877c <+67>: mov -0x4(%ebx),%eax > 0x08048782 <+73>: mov %eax,(%esp) > 0x08048785 <+76>: call 0x8048500 <__cxa_atexit@plt> >=20 > ebx was set up earlier as the GOT pointer. Strange, you must have a different gcc 4.8 than me, in my case it always = uses GOT: call _ZN5OuterC1Ev@PLT leal __dso_handle@GOTOFF(%ebx), %esi addl $12, %esp pushl %esi pushl %edi pushl _ZN5OuterD1Ev@GOT(%ebx) call __cxa_atexit@PLT This is the lang/gcc48 port, btw. -Dimitry