Why would an initialised struct pointer field be null in the struct's destructor?

[Adam D. Ruppe via Digitalmars-d-learn]

On Sunday, 21 May 2017 at 14:13:20 UTC, Stanislav Blinov wrote:
> Not if you either emplace() or blit Foo.init into all of the 
> array elements.

You especially need to be safe calling ~this on Foo.init.