Why isn't bool allowed as AA key type?

[Nick Sabalausky]

"David Nadlinger" <see at klickverbot.at> wrote in message 
news:irubao$gpu$1 at digitalmars.com...
> On 5/29/11 10:21 PM, Nick Sabalausky wrote:
>> "David Nadlinger"<see at klickverbot.at>  wrote in message
>> news:irrd5h$hdj$1 at digitalmars.com...
>>> [.]
>>> is there a reason bool isn't allowed as key type for associative arrays
>>> (mtype.c:3995)? The docs don't mention this. [.]
>> It works for me. I use it all the time as a hash set. What version are 
>> you
>> on? I've been using D2, maybe it's a D1 issue? If so, I'd file a bug 
>> report.
>
> Are you sure you are using bool _keys_, not values? On a related note, 
> https://github.com/D-Programming-Language/dmd/pull/77 seems to be all 
> required for making them work.
>

Shit, you're right. Not thinking here...