Enumeration value not handled in switch

I get the error Enumeration value 'Blue' not handled in switch below the code.

I'm having a enumeration of colors with 3 color.

UIColor color {Red, Green, Blue};

switch (color){

case Red:

break;

case Green:

break;

}

GCC compiler -> generates warning on this code.

LLVM compiler -> generates error on this code.

You have to check all the enumeration values.

switch (color){

case Red:

break;

case Green:

break;

case Blue:

break;

}