1const y = sub(10, 20);
 2fn sub(a: u16, b: u16) u16 {
 3    return a - b;
 4}
 5
 6export fn entry() usize {
 7    return @sizeOf(@TypeOf(&y));
 8}
 9
10// error
11//
12// :3:14: error: overflow of integer type 'u16' with value '-10'
13// :1:14: note: called at comptime here