[Bug c++/38297] O2 causes invalid code

[pinskia at gcc dot gnu dot org]

------- Comment #7 from pinskia at gcc dot gnu dot org  2008-11-28 16:52 -------
1) Yes that is the reason why -Wstrict-aliasing exist.  This is undefined
behavior at runtime not at compile time so we cannot error out.  It is also the
reason why -Wstrict-aliasing is enabled with -Wall.

2) Use memcpy instead of an union if you want a portable way to type pun.

*** This bug has been marked as a duplicate of 21920 ***


-- 

pinskia at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38297