[LightDM] Missing symbols in liblightdm-qt-3-0 1.26

[Yves-Alexis Perez]

On Tue, 2018-04-17 at 17:23 +0200, Yves-Alexis Perez wrote:
> Could someone comment on this? Even if the _LightDMGreeter type is internal,
> it's still exposed in exported symbols so it doesn't look really safe to
> change without bumping the soname.

It seems that the cb_* functions are not exposed in the headers and shouldn't
be exported. Maybe it would make sense to build with -fvisibility=hidden?
> 
> Some other removed symbols are:
> 
> QDBusReply<QString>::~QDBusReply()@Base
> QDebug::~QDebug()@Base
> 
> Any comment on those would be welcome too.

I guess those are in the same vein as the other destructors and could be
marked optional?

Again, confirmation would be welcome.

Regards,
-- 
Yves-Alexis
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