QtCreator crash & no debug info

Dariusz

Hey

I'm a bit lost. I have a QGraphicsView / scene with some items in it. When I try to do an operation on it I get a crash, but the debug looks like this :

I tried stepping line by line, but as far as I can tell, once I release mouse everything runs as it should in my code, then it goes into Qt internal code and crashes there...

How can I debug it?

Edit VS provide this ertror :

aha_1980

Hi @Dariusz,

looks like some recursion here...

Is there anything meaningful when you click More on the stack view?

Otherwise you'll need to show some code.

Regards

Dariusz

@aha_1980 said in QtCreator crash & no debug info:

Hi @Dariusz,

looks like some recursion here...

Is there anything meaningful when you click More on the stack view?

Otherwise you'll need to show some code.

Regards

Sadly nothing I could use... mostly what you can see above.

I will try looking for recussion, I know I fire lots of "update()" calls during the action but not sure.

Essentially I do a connector drag - mousemove/release calls to simulate node editor connection move.

Will try to narrow it down somehow.

TIA

Dariusz

Still getting dem crashes...

I think the issues is that I call update() from graphicsItem, and then I do delete item. So perhaps I have racing condition when the QT try to update the viewport but fails because I called delete on the item?

I don't see any deleteLater() on graphics items so how should I remove them from the viewport?

TIA

aha_1980

@Dariusz

As said above, without showing you code it's just guessing.

If you cannot show the whole code, try to create a minimal reproducing example. Often you find the solution while doing so.

Regards