[Bug c++/65690] [5 Regression] typedef alignment lost since r219705

[hubicka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65690

--- Comment #8 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
I also considered just copying over the stuff that layout_decl fills.  I guess
it is better than calling it and copying back TYPE_SIZE, but this is far from
being my area.

I think we also want to preserve attribute lists.