static array of structs clarification questions

[Marc Schütz via Digitalmars-d-learn]

On Friday, 12 February 2016 at 21:56:09 UTC, Steven Schveighoffer 
wrote:
> That's odd. I think anonymous probably has the answer (they are 
> context pointers), but I'm also surprised they are null, they 
> shouldn't be.

In this example, `void foo()` doesn't access any outer variables, 
so there's no need for a context to be created.