[kopete-bugs] [Bug 176235] kopete crashes plasma with notifications

[makosoft at googlemail.com]

http://bugs.kde.org/show_bug.cgi?id=176235





--- Comment #9 from makosoft googlemail com  2008-12-06 19:19:06 ---
Ugh. It would seem that QGraphicsItem::~QGraphicsItem is, via a fairly indirect
route, calling the pure virtual method QGraphicsItem::boundingRect of the
object being destroyed. This is apparently a very big no-no in C++, even if the
object is of a subclass that overrides the pure virtual method.

Specifically, the issue is the destruction of the child widgets on the popup,
particularly the Plasma::PushButton. This destroys the underlying
QGraphicsProxyWidget, which calls unsetCursor on the QGraphicsItem underlying
that. unsetCursor attempts to determine if the cursor is over the item in
question, eventually resulting in a call to QGraphicsItem::boundingRect on the
original object that's being destroyed. This crashes plasma.

Thankfully, since I'm neither a KDE or Qt developer, fixing this isn't my
problem. It looks hard, though.


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