http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47796
qihua.dai at intel dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|INVALID |
--- Comment #5 from qihua.dai at intel dot com 2011-02-21 07:02:55 UTC ---
(In reply to comment #4)
> (In reply to comment #3)
> > If it's not a bug, why is there the different behavior for -O0 and -O2
> Because strict aliasing is not enabled at -O0, only at -O2 and above (-Os
> included).
Why no warning message for this volation using gcc 4.5.1 or gcc 4.4.0?
And why is there the different behavior for gcc 4.4.0 -O2 and gcc 4.5.1 -O2?
Why does gcc 4.4.0 -O2 have not this problem?
