File: associated-types-eq-obj.rs

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rustc 1.88.0%2Bdfsg1-1
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//@ run-pass
// Test equality constraints on associated types inside of an object type


pub trait Foo {
    type A;
    fn boo(&self) -> <Self as Foo>::A;
}

pub struct Bar;

impl Foo for char {
    type A = Bar;
    fn boo(&self) -> Bar { Bar }
}

fn baz(x: &dyn Foo<A=Bar>) -> Bar {
    x.boo()
}

pub fn main() {
    let a = 'a';
    baz(&a);
}