tests/ui/threads-sendsync/sendfn-is-a-block.rs


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// run-pass


fn test<F>(f: F) -> usize where F: FnOnce(usize) -> usize {
    return f(22);
}

pub fn main() {
    let y = test(|x| 4 * x);
    assert_eq!(y, 88);
}