Bug#635724: vlc: FTBFS (kfreebsd-i386) Segmentation fault (core dumped) ../bin/vlc-cache-gen .

[Modestas Vainius]

Hello,

On trečiadienis 03 Rugpjūtis 2011 00:04:34 Reinhard Tartler wrote:
> reassign 635724 libqt4-gui,vlc
> stop
> 
> On Tue, Aug 02, 2011 at 20:14:21 (CEST), Rémi Denis-Courmont wrote:
> > 	Hello,
> 
> [...]
> 
> > I rather suspect the debug information are corrupted by compiler
> > optimizations at this point. Otherwise, DeleteModule() would crash
> > before module_Unload() gets to invoke dlclose(), as it dereferences
> > p_module.
> > 
> > To me, it looks more like Qt4 has (yet another) bug in its static object
> > destructors, which makes it crash dlclose(). VLC may be the only
> > application dlopen()'ing -a shared object that links with- Qt4. And if
> > it's not, it might still well be the only one that does so during as
> > part of its build process.
> 
> Sounds plausible to me. Qt4 maintainers, could you please comment on this?

I don't see how Qt4 can be at fault here. vlc 1.1.10-1+b1 [1] has built fine 
with libqt4-dev 4:4.7.3-4. Current qt4-x11 4:4.7.3-5 do not have such changes 
which could have caused this. So I suspect changes in the toolchain or broken 
gcc which was used to compile qt4-x11 4:4.7.3-5 with. By the way, the 
backtrace from [2] is not very useful since it was generated without libqt4-
dbg installed.

[1] https://buildd.debian.org/status/fetch.php?pkg=vlc&arch=kfreebsd-
i386&ver=1.1.10-1%2Bb1&stamp=1309445176

[2] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=635724#35

-- 
Modestas Vainius <modax at debian.org>
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