Data Layout

[Jim Dehnert]

> From: Mark Mitchell <mark at codesourcery.com>
> 
>   Question:
> 
>     Does the presence of a zero-width bit-field prevent a class from
>     being empty?
> 
>   Suggested Resolution:
> 
>     No.  Amend the definition of an "empty class" to read:
> 
>       A class with no non-static data members other than zero-width
>       bitfields, no virtual functions, no virtual base classes, and no
>       non-empty non-virtual base classes.
> 
>     Amend the definition of a "nearly empty class" to read:
> 
>       A class, the objects of which contain only a Vptr and zero-width
>       bitfields.

I've added this as issue A-15.  Is there an issue with maintaining
distinct addresses for multiple zero-width bitfields, or is that not a
problem?

Jim

-	    Jim Dehnert		dehnert at sgi.com
				(650)933-4272