[Bug c/82224] Strict-aliasing not noticing valid aliasing of two unions with active members

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82224

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
See PR 14319 which I think this is a dup of.