public enum A {
	Hoge(CONST); // Cannot reference a field before it is defined
	private static int CONST = 1;

	private A(int x) {
	}
}
public enum B { // Syntax error on token "{", ; expected after this token
	private static int CONST = 1;
	Hoge(CONST);

	private B(int x) {
	}
}
public enum C { // OK
	Hoge(Proxy.CONST);

	private static class Proxy {
		public static int CONST = 1;
	}

	private C(int x) {
	}
}
public enum D { // OK
	Hoge(getConst());

	private static int getConst() {
		return 1;
	}

	D(int x) {
	}
}