1 #![allow(non_camel_case_types)]
3 // compile-flags: --edition 2018
5 #![feature(try_blocks)]
10 let catch_result: Option<_> = try {
14 assert_eq!(catch_result, Some(5));
17 while catch { catch = false; }
18 assert_eq!(catch, false);
20 catch = if catch { false } else { true };
21 assert_eq!(catch, true);
27 let catch_err: Result<_, i32> = try {
31 assert_eq!(catch_err, Err(22));
33 let catch_okay: Result<i32, i32> = try {
34 if false { Err(25)?; }
38 assert_eq!(catch_okay, Ok(28));
40 let catch_from_loop: Result<i32, i32> = try {
42 if i < 5 { Ok::<i32, i32>(i)?; } else { Err(i)?; }
46 assert_eq!(catch_from_loop, Err(5));
49 let _res: Result<(), ()> = try {
52 assert_eq!(cfg_init, 5);
55 let _res: Result<(), ()> = try {
59 assert_eq!(cfg_init_2, 6);
61 let my_string = "test".to_string();
62 let res: Result<&str, ()> = try {
63 // Unfortunately, deref doesn't fire here (#49356)
66 assert_eq!(res, Ok("test"));
68 let my_opt: Option<_> = try { () };
69 assert_eq!(my_opt, Some(()));
71 let my_opt: Option<_> = try { };
72 assert_eq!(my_opt, Some(()));