File: issue-2111.rs

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fn foo(a: Option<usize>, b: Option<usize>) {
    match (a, b) {
        //~^ ERROR: non-exhaustive patterns: `(None, None)` and `(Some(_), Some(_))` not covered
        (Some(a), Some(b)) if a == b => {}
        (Some(_), None) | (None, Some(_)) => {}
    }
}

fn main() {
    foo(None, None);
}