[Bug rtl-optimization/51353] GCC incorrectly optimizes away assignment to return address

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51353

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

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

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-01-04 
00:37:33 UTC ---
__builtin_frame_address(0) points to an address on the stack which means at the
end of the function, it can be removed.  The tricks you are doing require the
use of volatile so that the compiler cannot remove it.