tests/ui/pattern/usefulness/tuple-struct-nonexhaustive.rs


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struct Foo(isize, isize);

fn main() {
    let x = Foo(1, 2);
    match x {   //~ ERROR non-exhaustive
        Foo(1, b) => println!("{}", b),
        Foo(2, b) => println!("{}", b)
    }
}