QSharedPointer and Temporary Copies

[ajaynatu]

Hello,
I have something like below in my code @void Fun()
{
ClassA var = queue->dequeue();
}@

Now var is a qsharedpointer. From, what i could guess looking into the dequeue function of the QQueue, is that it would return a temporary copy of the var. So, it would increment by 1 the reference count for var and then decrement when it goes out of scope. Can this cause a problem ? Actually, it crashed while doing so. So, i fear, while returning temporary object, the reference counting is going wrong, the actual pointer is being deleted. It is not 100% reproducable
The architecture is ARM XScale.

[tucnak]

It's bad practice. I will do it in this way:
@
void Foo::bar() {
MyClass * var = queque->dequeue():
var->somefunction();
}
@

It's recommended to contains pointers (instead of objects) in containers.

[ajaynatu]

You mean to say QSharedPointers cannot be used in containers?

[giesbert]

can you give a bit more code?
How is the queue defined? Which types are stored? How are they added?
This has a big influence on the error...