Threads not garbage collected ?

[David Nadlinger via Digitalmars-d]

On Wednesday, 22 February 2017 at 07:14:27 UTC, Jonathan M Davis 
wrote:
> In this particular case, the program would probably exit if you 
> did
>
> void main()
> {
>     {
>         auto a = new A;
>     }
>
>     import core.memory;
>     GC.collect();
> }

I very much doubt so. A Thread object isn't just a handle or 
thread reference, but also encapsulates some of the 
system/druntime state required to make threading work. Executing 
Thread.~this() while a thread was still running would lead to a 
crash.

(The tricky part is to make sure the Thread object becomes 
eligible for collection once a thread has actually finished.)

  — David