[Development] Debugging crashes in QML / QtDeclarative [was: Question about Qt's future]

[Kleint Friedemann]

Hi Christoph,

> Christoph Feck wrote: Not speaking for Michael, but let me add that C++ is much easier to 
> debug compared to QML, if you get a crash. We have nearly hundred 
> backtraces in the Plasma bug tracker that point back to crashes in 
> QtDeclarative, without a single clue where the crash comes from. For 
> examples see bugs 328234, 332131, 331060, 333621, 333532, 333334, 
> 332995, or 332646 to cite only some fairly recent ones.

Please take a look at https://bugreports.qt-project.org/browse/QTCREATORBUG-11144 and the related changes in Qt Creator 3.1 . When doing pure C++ debugging, Qt Creator now has a context menu entry "Load QML frames" in the stack window. This basically checks the stack trace for a value of a  QV4::ExecutionContext *, tries to extract the JavaScript stack frames from it and displays those frames in addition to the C++ frames.

Regards,
Friedemann

--
Friedemann Kleint
Digia, Qt