Date: Wed, 26 Jun 2013 22:51:37 +0200 From: Michael Gmelin <freebsd@grem.de> To: Konstantin Belousov <kostikbel@gmail.com> Cc: David Chisnall <theraven@freebsd.org>, Brooks Davis <brooks@FreeBSD.org>, Dimitry Andric <dim@FreeBSD.org>, "freebsd-ports@freebsd.org Ports" <freebsd-ports@freebsd.org>, Matthias Andree <mandree@FreeBSD.org> Subject: Re: Global destructor order problems (was: Re: Are ports supposed to build and run on 10-CURRENT?) Message-ID: <20130626225137.7b36167f@bsd64.grem.de> In-Reply-To: <20130626204521.GU91021@kib.kiev.ua> References: <20130613031535.4087d7f9@bsd64.grem.de> <EF830CD7-00F1-4628-8515-76133BBE85E7@FreeBSD.org> <C1CC40FC-4489-4164-96B7-5E1A25DCB37F@FreeBSD.org> <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>
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On Wed, 26 Jun 2013 23:45:21 +0300 Konstantin Belousov <kostikbel@gmail.com> 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. Could you replicate the problem using clang on stable/9 and HEAD? (I didn't test gcc > 4.2.1 myself). > > The r211706 intent is indeed to prevent a situation when the libc > calls the atexit(3)-registered termination function from dso which is > already unloaded. This is apparently epidemic with PHP and similar > environments. > -- Michael Gmelin
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