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// run-pass
#![allow(unused)]

fn foo<F>(f: F)
    where F: FnOnce()
{
}

fn main() {
    // Test that this closure is inferred to `FnOnce`
    // because it moves from `y.as<Option::Some>.0`:
    let x = Some(vec![1, 2, 3]);
    foo(|| {
        match x {
            Some(y) => { }
            None => { }
        }
    });

    // Test that this closure is inferred to `FnOnce`
    // because it moves from `y.0`:
    let y = (vec![1, 2, 3], 0);
    foo(|| {
        let x = y.0;
    });
}