2 #![feature(custom_attribute)]
3 #![allow(dead_code, unused_attributes)]
8 fn return_unit() -> Unit {
12 enum MyBool { False, True }
15 fn return_true() -> MyBool {
20 fn return_false() -> MyBool {
25 fn return_none() -> Option<i64> {
30 fn return_some() -> Option<i64> {
35 fn match_opt_none() -> i8 {
44 fn match_opt_some() -> i8 {
53 fn two_nones() -> (Option<i16>, Option<i16>) {