tests/ui/traits/next-solver/normalize/normalize-param-env-3.rs

//@ check-pass
//@ compile-flags: -Znext-solver
// Issue 100177

trait GenericTrait<T> {}

trait Channel<I>: GenericTrait<Self::T> {
    type T;
}

trait Sender {
    type Msg;

    fn send<C>()
    where
        C: Channel<Self::Msg>;
}

impl<T> Sender for T {
    type Msg = ();

    fn send<C>()
    where
        C: Channel<Self::Msg>,
    {
    }
}

// This works
fn foo<I, C>(ch: C) where C: Channel<I> {}

fn main() {}