Array init

[Max Samukha]

bearophile wrote:

> A question about D1 specs (that may be useful for LDC).
> 
> In the following code there's anarray of structs S. Is it OK, according to
> D1 specs, to not initialize the memory of this array if the compiler sees
> that all fields of S have a void init?
> 
> struct S { double x = void, y = void; }
> void main() {
>   auto a = new S[1000];
> }
> 
> Bye,
> bearophile

That's an interesting question. The compiler does set void-initialized 
member variables to zeros:

struct S { double x = void, y = void; }
void main() {
    S s; // x and y are initialized to 0
}

I think this is a bug. Such members should be left uninitialized or 
initialized to the default initializer for the type (NaN in this case) or 
void initialization should be disallowed for member variables.