Can two weak variables create a retain cycle?

Question

In ARC, if A hold a strong reference to B, and B holds a strong ref to A, there will be a retain cycle.

Will the code below also create a retain cycle?

    __weak MyClass *weakSelf = self;
    [self doSomething:^{

        weakSelf.someVariable = YES;

        [weakSelf doSomething:^{

            weakSelf.someVariable = YES;
        }];

    }];

Answer 1

With ARC the weakSelf pointer is copied, but since it's weak, the copy of the pointer will not cause the retain count to be increased. So no, it doesn't create a retain cycle.

Answer 2

No it won't. In fact, if you dont retain the object and for some reason the block would be called after the MyClass object gets deallocated, you end up with a runtime crash