[Bug c/67090] [5/6 Regression] O2/O3 optimizes values away when different type pointers are typecasted

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67090

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

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

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is such an obvious violation of aliasing rules in c/c++. 
Use memcpy or an Union (gcc extension) to get around the it. You can use
-fno-strict-aliasing too.