[Development] QMetaType::registerType: Binary compatibility break -- Size mismatch for type 'QPaintBufferCacheEntry' [1024]. Previously registered size 0, now registering size 16. Aborted (core dumped)

[Olivier Goffart]

On Wednesday 24. June 2015 14:03:07 Zhang Qun wrote:
> Dear all
> 
> I manage to compile my code with Qt 5 but when I run the program and
> encountered the following error:
> 
>   QMetaType::registerType: Binary compatibility break -- Size mismatch for
> type 'QPaintBufferCacheEntry' [1024]. Previously registered size 0, now
> registering size 16.
> Aborted (core dumped)
>  I have googled for a few days and did not find any luck. Anyone could help
> me with this? Thanks in advance. I am running Qt5 on ubuntu 14.04 64bit.

Searching for 'QPaintBufferCacheEntry' on google lead to some report of the 
same problems:
https://bugreports.qt.io/browse/QTBUG-27104
https://forum.qt.io/topic/24491/qmetatype-registertype-binary-compatibility-break-size-mismatch-for-type-qpaintbuffercacheentry-1024-previously-registered-size-0-now-regist

It appears that this is because your application loads both Qt5 and Qt4 at the 
same time. Qt4 did not register the size and Qt5 tries to register the same 
type with a size.

So to fix your problem you must make sure that you do not load a qt4 based 
plugin. This can be loaded indirectly from some other library.


-- 
Olivier 

Woboq - Qt services and support - http://woboq.com - http://code.woboq.org