type File {
    fd: i32,
}

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

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