rust/src/test/compile-fail/non-exhaustive-match.rs

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enum t { a, b, }
fn main() {
let x = a;
alt x { b { } } //! ERROR non-exhaustive patterns
alt true { //! ERROR non-exhaustive patterns
true {}
}
alt @some(10) { //! ERROR non-exhaustive patterns
@none {}
}
alt (2, 3, 4) { //! ERROR non-exhaustive patterns
(_, _, 4) {}
}
alt (a, a) { //! ERROR non-exhaustive patterns
(a, b) {}
(b, a) {}
}
// This is exhaustive, though the algorithm got it wrong at one point
alt (a, b) {
(a, _) {}
(_, a) {}
(b, b) {}
}
}