Why must bitfields sum to a multiple of a byte?

[monarch_dodra]

On Tuesday, 31 July 2012 at 00:44:16 UTC, Andrej Mitrovic wrote:
> On 7/31/12, Era Scarecrow <rtcvb32 at yahoo.com> wrote:
>>   It assumes the largest type we can currently use which is 
>> ulong
>
> Ah yes, it makes sense now. Thanks for the brain cereal. :p

I saw your bug report:
http://d.puremagic.com/issues/show_bug.cgi?id=8474

The bug is only when the field is EXACTLY 32 bits BTW. bitfields 
works quite nice with 33 or whatever. More details in the report.