[Bug c/67314] No warning on assigning an out-of-range integer to an enum

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67314

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This warning is only useful for c++. C defines the full range of the underlying
type of the enum for the enum while c++ has different rules. 

Also I think this warning would be too noisy for c code and clang is wrong to
implement it for c.