CTFE Assignment to anonymous union shows unexpected behavior

[Imperatorn]

On Friday, 23 April 2021 at 10:36:40 UTC, Imperatorn wrote:
> On Thursday, 22 April 2021 at 22:47:17 UTC, Rekel wrote:
>> I'm not sure why this is happening, but after simplifying my 
>> code I traced it back to what the title may suggest. The 
>> original cause of my issues being summarized by debug print 
>> statements returning a union as:
>>> [...]
>> Even though the nanF should thus be 1.0, 0.0, etc...
>>
>> [...]
>
> This actually seems to be a bug related to order of declaration.
>
> Try this
>
> ---
> union
>     {
>         int[size][size] b;
>         int[size * size] a;
>     }
> ---

Lol, formatting. But u get the idea *very* clearly at least 😅