Document empty structures

[Geoffrey Keating]

On Monday, April 14, 2003, at 11:20  AM, Mark Mitchell wrote:

> On Mon, 2003-04-14 at 11:17, Richard Earnshaw wrote:
>>
>>>> I'm pretty sure that the C++ language standard does not say that 
>>>> empty
>>>> structures have size 1 -- AFAIK it just says that they have 
>>>> non-zero size
>>>> (C++98 section 9, paragraph 3).
>>>
>>> Correct.  The C++ ABI says they have size 1.
>>
>> Even on a machine where STRUCTURE_SIZE_BOUNDARY != 8?  I would have
>> thought STRUCTURE_SIZE_BOUNDARY / BITS_PER_UNIT was a more sensible
>> definition.
>
> You are even more correct.  I forget what the exact calculation is, but
> it does indeed take this kind of thing into account.

Could someone provide a patch?

-- 
Geoff Keating <geoffk@apple.com>