On Tue, 2008-04-22 at 01:54 +0300, Peter Dimov wrote:
as for the rest, I'd really like to see the patch without #1 and #2.
Please see the attached patch. OK to commit? Note that with this patch, the alternative aliasing is already possible: shared_ptr<X> x = ...; Y* y = ...; shared_ptr<Y>( x.get_shared_count(), y ); // aliasing Since the current aliasing ctor is not as explicit and it is not yet standardizes: What do you think about removing it? One might document get_shared_count as returning a const reference to an unspecified-internal-shared-counter-type, as well as documenting the new aliasing ctor(s) to accept this argument. That way, the interface is useful as a public interface, not just for internal optimizations. Regards, Daniel