1export fn entry1() void {
 2    _ = packed union {
 3        a: u1,
 4        b: u2,
 5    };
 6}
 7
 8// error
 9//
10// :2:16: error: packed union has fields with mismatching bit sizes
11// :3:12: note: 1 bits here
12// :4:12: note: 2 bits here