File: impl-wf-cycle-6.rs

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rustc 1.86.0%2Bdfsg1-1
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//@ run-rustfix

#[allow(dead_code)]
trait Baz {}
impl Baz for () {}
impl<T> Baz for (T,) {}

#[allow(dead_code)]
trait Fiz {}
impl Fiz for bool {}

trait Grault {
    type A;
    type B;
}

impl Grault for () {
    type A = ();
    type B = bool;
}

impl<T: Grault> Grault for (T,)
//~^ ERROR overflow evaluating the requirement `<(T,) as Grault>::A == _`
where
    Self::A: Baz,
{
    type A = ();
    type B = bool;
}

fn main() {
    let _: <((),) as Grault>::A = ();
}