#1392 Default Case is Missing With Alias Enum Constants

[Clint Shank]

A public static final EnumType field in an enumeration confuses FindBugs and FindBugs will report a SF_SWITCH_NO_DEFAULT issue when all cases are covered in a switch statement.

For instance, given the following enumeration:

:::java
public enum TrafficLight {
    RED, YELLOW, GREEN;

    // introducing a public static final <EnumType> field introduces
    // a SF_SWITCH_NO_DEFAULT bug
    public static final TrafficLight GO = GREEN;
}

FindBugs will report that a default case is missing even though all enum constants are covered:

:::java
public void showBug(TrafficLight light) {
    // default case is missing, but all cases are covered
    switch (light) {
        case RED:
            System.out.println("red");
            break;
        case YELLOW:
            System.out.println("yellow");
            break;
        case GREEN:
            System.out.println("green");
            break;
    }
}

[Tagir Valeev]

Well spotted, thanks. Fixed:
https://github.com/findbugsproject/findbugs/commit/fac4acaf8a38efb9076bd07b5d401e363865915d