Static arrays inside struct and class - bug?

[NX via Digitalmars-d-learn]

On Saturday, 1 August 2015 at 18:50:09 UTC, Daniel Kozak wrote:
> No you don't. You still use static allocation for array

Can clarify why does that happen and I still suspect it's a 
static allocation it would increase output exe if it was really 
that static..?