1comptime {
 2    _ = enum(i0) { a, _ };
 3}
 4
 5comptime {
 6    _ = enum(u0) { a, _ };
 7}
 8
 9comptime {
10    _ = enum(u0) { a, b, _ };
11}
12
13// error
14//
15// :2:9: error: non-exhaustive enum specifies every value
16// :6:9: error: non-exhaustive enum specifies every value
17// :10:23: error: enumeration value '1' too large for type 'u0'