https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115320
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |INVALID Status|UNCONFIRMED |RESOLVED --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- No. It is only well defined if used directly via the union variable otherwise it is just another pointer access.