At 03:34 AM 2/23/2003, Thomas Witt wrote: >Greg, > >I can not figure out how you make sure to satisfy the alignment constraints of >T and counted_base_header_impl. Any hint would be appreciated.
I just used two char arrays, thinking there was a dispensation somewhere in the standard to allow for placement new into char arrays: template<typename T> struct object_with_counted_header { char header[sizeof(counted_base_header_impl<T*,checked_deleter<T> >)]; char object[sizeof(T)]; }; If I'm wrong, an alternative might be: template<typename T> struct object_with_counted_header { counted_base_header_impl<T*,checked_deleter<T> > header; T object; }; But then you can't use offsetof, and some fancier tricks will be in order. _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost