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// run-pass

trait Base: Base2 + Base3{
    fn foo(&self) -> String;
    fn foo1(&self) -> String;
    fn foo2(&self) -> String{
        "base foo2".to_string()
    }
}

trait Base2: Base3{
    fn baz(&self) -> String;
}

trait Base3{
    fn root(&self) -> String;
}

trait Super: Base{
    fn bar(&self) -> String;
}

struct X;

impl Base for X {
    fn foo(&self) -> String{
        "base foo".to_string()
    }
    fn foo1(&self) -> String{
        "base foo1".to_string()
    }

}

impl Base2 for X {
    fn baz(&self) -> String{
        "base2 baz".to_string()
    }
}

impl Base3 for X {
    fn root(&self) -> String{
        "base3 root".to_string()
    }
}

impl Super for X {
    fn bar(&self) -> String{
        "super bar".to_string()
    }
}

pub fn main() {
    let n = X;
    let s = &n as &dyn Super;
    assert_eq!(s.bar(),"super bar".to_string());
    assert_eq!(s.foo(),"base foo".to_string());
    assert_eq!(s.foo1(),"base foo1".to_string());
    assert_eq!(s.foo2(),"base foo2".to_string());
    assert_eq!(s.baz(),"base2 baz".to_string());
    assert_eq!(s.root(),"base3 root".to_string());
}