Document empty structures

[Mark Mitchell]

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.

Thanks,

-- 
Mark Mitchell
CodeSourcery, LLC
mark@codesourcery.com