struct default constructor, unions and bizaro behavior.

[Dicebot via Digitalmars-d]

On Wednesday, 10 December 2014 at 21:57:42 UTC, deadalnix wrote:
> struct S {
>      union {
>          T1 t1;
>          T2 t2;
>      }
>
>      T3 t3;
> }
>
> T1 a1;
> T3 a3;
> S(a1, a3);
>
> This is erroring because t1 is set twice. It turns out that the
> second parameter of the struct map to t2 rather than t3.
>
> This behavior do not make any sense, ever. Why is that the
> default ?

Isn't using named union instead an option?