1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
#![feature(let_else)]
#![deny(unreachable_patterns)]
fn main() {
while let 0..=2 | 1 = 0 {} //~ ERROR unreachable pattern
if let 0..=2 | 1 = 0 {} //~ ERROR unreachable pattern
match 0u8 {
0
| 0 => {} //~ ERROR unreachable pattern
_ => {}
}
match Some(0u8) {
Some(0)
| Some(0) => {} //~ ERROR unreachable pattern
_ => {}
}
match (0u8, 0u8) {
(0, _) | (_, 0) => {}
(0, 0) => {} //~ ERROR unreachable pattern
(1, 1) => {}
_ => {}
}
match (0u8, 0u8) {
(0, 1) | (2, 3) => {}
(0, 3) => {}
(2, 1) => {}
_ => {}
}
match (0u8, 0u8) {
(_, 0) | (_, 1) => {}
_ => {}
}
match (0u8, 0u8) {
(0, _) | (1, _) => {}
_ => {}
}
match Some(0u8) {
None | Some(_) => {}
_ => {} //~ ERROR unreachable pattern
}
match Some(0u8) {
None | Some(_) => {}
Some(_) => {} //~ ERROR unreachable pattern
None => {} //~ ERROR unreachable pattern
}
match Some(0u8) {
Some(_) => {}
None => {}
None | Some(_) => {} //~ ERROR unreachable pattern
}
match 0u8 {
1 | 2 => {},
1..=2 => {}, //~ ERROR unreachable pattern
_ => {},
}
let (0 | 0) = 0 else { return }; //~ ERROR unreachable pattern
}
|
