56 lines
1.3 KiB
Rust
56 lines
1.3 KiB
Rust
#![deny(unreachable_patterns)]
|
|
|
|
//@ check-pass
|
|
|
|
// We wrap patterns in a tuple because top-level or-patterns were special-cased.
|
|
fn main() {
|
|
match (0,) {
|
|
(1 | 2,) => {}
|
|
_ => {}
|
|
}
|
|
|
|
match (0, 0) {
|
|
(1 | 2, 3 | 4) => {}
|
|
(1, 2) => {}
|
|
(3, 1) => {}
|
|
_ => {}
|
|
}
|
|
match (Some(0u8),) {
|
|
(None | Some(0 | 1),) => {}
|
|
(Some(2..=255),) => {}
|
|
}
|
|
match ((0,),) {
|
|
((0 | 1,) | (2 | 3,),) => {}
|
|
((_,),) => {}
|
|
}
|
|
match (&[0u8][..],) {
|
|
([] | [0 | 1..=255] | [_, ..],) => {}
|
|
}
|
|
|
|
match ((0, 0),) {
|
|
((0, 0) | (0, 1),) => {}
|
|
_ => {}
|
|
}
|
|
match ((0, 0),) {
|
|
((0, 0) | (1, 0),) => {}
|
|
_ => {}
|
|
}
|
|
match ((0, 0),) {
|
|
// Note how the second one would be redundant without the guard.
|
|
((x, y) | (y, x),) if x == 0 => {}
|
|
_ => {}
|
|
}
|
|
match 0 {
|
|
// We don't warn the second one as redundant in general because of cases like the one above.
|
|
// We could technically do it if there are no bindings.
|
|
0 | 0 if 0 == 0 => {}
|
|
_ => {}
|
|
}
|
|
|
|
// This one caused ICE https://github.com/rust-lang/rust/issues/117378
|
|
match (0u8, 0) {
|
|
(x @ 0 | x @ (1 | 2), _) => {}
|
|
(3.., _) => {}
|
|
}
|
|
}
|