Use-after-scope bug in Phobos unittest, how to fix?

[Dennis]

On Monday, 15 May 2023 at 18:55:09 UTC, Johan wrote:
> I see that the test is trying to prove that the MyRefCounted 
> dtors are run correctly when the scope ends.

That the destructor is run at the end of the scope is the job of 
the compiler, not something that this unittest needs to test. To 
test that the destructor nullifies the `store`, `__dtor` can be 
called manually.