[CRASH] QGraphicsView::mapFromScene buggy

[Aaron J. Seigo]

On Monday 20 October 2008, Alex Merry wrote:
> On Monday 20 October 2008 10:34:54 Alexis Ménard wrote:
> > QSize s = dialog->size();
> > QPoint pos = q->view()->mapFromScene(q->scenePos());
> >
> > Here is the code from popup applet. Three things that can crash :
> >
> > First q->view() return null so you call mapFromScene to a null or broken
> > pointer. Run gdb and test the variable (or print it with kDebug).
> >
> > Second, q->scenePos() return crazy value (check).
> >
> > Third, q is null or broken. Test.
>
> Since the crash was in mapFromScene(), q is certainly not the problem.  I
> doubt a crazy value from q->scenePos() would cause a segfault.  So the
> problem is almost certainly the result of q->view().

yep, and its fixed in trunk.

-- 
Aaron J. Seigo
humru othro a kohnu se
GPG Fingerprint: 8B8B 2209 0C6F 7C47 B1EA  EE75 D6B7 2EB1 A7F1 DB43

KDE core developer sponsored by Qt Software

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