Hi,
There is a code like the following:
QVariant objectNameVariant = item->property( "objectName"
);
QString objectNameString =
objectNameVariant.toString();
qDebug () << "objectNameString: " <<
objectNameString;
QVariant keyboardEnabledVariant = item->property(
"keyboardEnabled" );
bool keyboardEnabled =
keyboardEnabledVariant.toBool();
qDebug () << "keyboardEnabled: " <<
keyboardEnabled;
QVariant keyboardRaisedVariant = item->property(
"keyboardRaised" );
bool keyboardRaised =
keyboardRaisedVariant.toBool();
qDebug () << "keyboardRaised: " <<
keyboardRaised;
.. and I'm investigating occasional crashes on the line "QVariant
keyboardRaisedVariant = item->property( "keyboardRaised" );"
The first crash was confronted under the Linux/Qt 5.9.1 but it is also
reproducible on both Windows and Linux with Qt 5.10 (although not 100%
of time).
Based on what I see in DEBUG it happens because of null 'engine' inside
QQmlNotifierEndpoint::connect. But under what conditions engine could
become null?
The only idea I have at the moment is that 'item' gets garbage-collected
by the time of querying 'keyboardRaised' but I'm not sure how to prove
it. What other possible theories makes sense to check?
Regards, Alexander
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