kdecoration2 mess - std::function makes the world fun

[Maximiliano Curia]

¡Hola Lisandro!

El 2015-08-20 a las 14:25 -0300, Lisandro Damián Nicanor Pérez Meyer escribió:
>> After having spent quite some time today looking at the current kdecoration2 
>> mess (tracked at https://bugs.kde.org/show_bug.cgi?id=350964 ,  at 
>> debian:796194, debian:796184 and probably many more)

>> The crash happens around when a std::function (a c++11 feature) is passed 
>> across a library boundary and some parts of it is built with gcc5 and others 
>> with 4.9.

> Matthias: is there any chance to make this simbol part of the new ABI? In this 
> way stuff will not migrate to testing as it happened for us.

std::function seems to be a header only thing, so there is no related symbol
in libstdc++6.

>> According to Matthias Klose, upstream actually gives no guarantees for for 
>> their abi for c++11, so I guess the steps forward should be:

>> 1) Immediately binNMU src:kdecoration2 in testing, then when that is done, 
>> binNMU src:kwin, src:oxygen and src:breeze all in testing. (that's for 
>> release team)

> I don't know if we can binNMU something in testing with a testing chroot. I 
> think it needs a sourcefull upload to t-p-u. RT, please confirm.

The release team asked us to do this after having a newer version in unstable
blocked by a transition. So we need to request the binNMU after 2).

>> 2) At the same time, do a library transition for libkdecoration2-5 and 
>> rename it to libkdecoration2-5v5 and binNMU the rdeps (the same as 
>> mentioned above)

> I can do this if the RT ACKs it (all B-Ds are ready).

I'm preparing this upload.

Happy hacking,
-- 
"It is not the task of the University to offer what society asks for, but to
give what society needs."
-- Edsger W. Dijkstra
Saludos /\/\ /\ >< `/
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