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Subject: Re: problems with threads/destructors in -current with llvm/clang
From: Kevin Lo <kevlo@FreeBSD.org>
To: Dimitry Andric <dim@FreeBSD.org>
Date: Sat, 08 Dec 2012 15:40:13 +0800
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Cc: kde-freebsd@kde.org, freebsd-current@FreeBSD.org,
 Mark Atkinson <atkin901@gmail.com>
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Dimitry Andric wrote:
> On 2012-12-07 13:59, Dimitry Andric wrote:
> > On 2012-12-06 18:12, Mark Atkinson wrote:
> >> Short backstory, I had recently upgraded my workstation to the latest
> >> current which included clang as default cc now.
> > ...
> >> qdbus under kde segfaults in malloc with a huge recursion stack:
> ...
> > This is a bug in qdbus; it uses a global static QDBusConnection object,
> > and the order in which global destructors are called is undefined:
> ...
> > The global static QDBusConnection object should be replaced by a
> > singleton, as suggested here:
> 
> Here is an alternative solution, where the QDBusConnection object is
> just a local variable in main(), and passed around as a const reference.
> To make the destructors work properly, I also replaced the exit() calls
> in main() with return statements.
> 
> With this patch (placed in /usr/ports/devel/dbus-qt4/files), qdbus
> starts up and exits normally for me.  I did not do any other rigorous
> testing, though. :)

Works for me, thanks. I think your patch should go in. 

	Kevin