Ruling out arbitrary cost copy construction?

[Sean Kelly]

Steven Schveighoffer Wrote:
> 
> It is quite possible that a thread exits while there are active, non-GC'd  
> objects owned by it in the heap.  There's no way to determine this when  
> the thread exits without running a GC collection, which is unacceptable.

Right.  But it doesn't matter who finalizes this data, since it won't be competing with the only other thread that actually referenced it.