[Bug c/50254] gcc-4.5 -fstrict-aliasing -fschedule-insns optimization produces wrong code

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50254

Richard Guenther <rguenth at gcc dot gnu.org> changed:

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

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-09-01 
08:38:15 UTC ---
        qentry->next      = (void *)qhead;

is voiolating strict aliasing rules if you ever end up loading/storing
qentry->next->{prev,next}.