3 #![allow(non_camel_case_types)]
5 // compile-flags: --edition 2018
7 #![feature(try_blocks)]
12 let catch_result: Option<_> = try {
16 assert_eq!(catch_result, Some(5));
19 while catch { catch = false; }
20 assert_eq!(catch, false);
22 catch = if catch { false } else { true };
23 assert_eq!(catch, true);
29 let catch_err: Result<_, i32> = try {
33 assert_eq!(catch_err, Err(22));
35 let catch_okay: Result<i32, i32> = try {
36 if false { Err(25)?; }
40 assert_eq!(catch_okay, Ok(28));
42 let catch_from_loop: Result<i32, i32> = try {
44 if i < 5 { Ok::<i32, i32>(i)?; } else { Err(i)?; }
48 assert_eq!(catch_from_loop, Err(5));
51 let _res: Result<(), ()> = try {
54 assert_eq!(cfg_init, 5);
57 let _res: Result<(), ()> = try {
61 assert_eq!(cfg_init_2, 6);
63 let my_string = "test".to_string();
64 let res: Result<&str, ()> = try {
65 // Unfortunately, deref doesn't fire here (#49356)
68 assert_eq!(res, Ok("test"));
70 let my_opt: Option<_> = try { () };
71 assert_eq!(my_opt, Some(()));
73 let my_opt: Option<_> = try { };
74 assert_eq!(my_opt, Some(()));