rust/src/test/compile-fail/non-exhaustive-match.rs
2012-08-26 15:56:16 -07:00

29 lines
655 B
Rust

enum t { a, b, }
fn main() {
let x = a;
match x { b => { } } //~ ERROR non-exhaustive patterns
match true { //~ ERROR non-exhaustive patterns
true => {}
}
match @Some(10) { //~ ERROR non-exhaustive patterns
@None => {}
}
match (2, 3, 4) { //~ ERROR non-exhaustive patterns
(_, _, 4) => {}
}
match (a, a) { //~ ERROR non-exhaustive patterns
(a, b) => {}
(b, a) => {}
}
match a { //~ ERROR b not covered
a => {}
}
// This is exhaustive, though the algorithm got it wrong at one point
match (a, b) {
(a, _) => {}
(_, a) => {}
(b, b) => {}
}
}