[Bug rtl-optimization/57359] wrong code for union access at -O3 on x86_64-linux

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57359

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>
        int *k = &u.i;
        **ppll = ll;
        *k = 0;

You are violating Aliasing rules still even though u is an union.