[Bug c++/53661] [gcc-4.7/4.8 regression] Wrong narrowing conversion warning with -std=c++11

[manu at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53661

--- Comment #4 from Manuel López-Ibáñez <manu at gcc dot gnu.org> 2012-09-14 
06:05:09 UTC ---
(In reply to comment #2)
> Manuel, what do you think about this? I see the warning happening because the
> underlying type of Code is unsigned int.

Isn't this a warning mandated by the standard?