[JTyQZSnP3cQGa8B]

It's a new technique called "reverse GC" where you care about the first living object instead of the last one /s

Also:

> nullable can hold references

We have: https://en.cppreference.com/w/cpp/utility/functional/referen...

> Assigning nullval [...] does not trigger the destruction of the underlying object

That's weird.