__vector(ubyte[32]) misalignment

[Bruce Carneal]

On Sunday, 9 August 2020 at 01:03:51 UTC, Bruce Carneal wrote:
> The .alignof attribute of __vector(ubyte[32]) is 32 but 
> initializing an array of such vectors via an assignment to 
> .length has given me 16 byte alignment (and subsequent seg 
> faults which I suspect are related).
>
> Is sub .alignof alignment expected here?  IOW, do I have to 
> manually manage memory if I want alignments above 16?

Manually managing the alignment eliminated the seg faulting.

Additionally, I found that std.experimental.mallocator 
Mallocator.alignment is 16.

So, is the misalignment baked in at this point?