type File {
    fd: i32,
}

fn close(file: owned<File>) -> Void {
}

pub fn main() -> Void {
    var files: [2]owned<File> = [File { fd: 1 }, File { fd: 2 }]
    let index: usize = 1
    close(files[index])
    files[0] = File { fd: 3 }
    close(files[1])
}