File: dropck-only-error.rs

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rustc 1.89.0%2Bdfsg1-1
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// Test that we don't ICE for a typeck error that only shows up in dropck
// issue #135039

pub trait AuthUser {
    type Id;
}

pub trait AuthnBackend {
    type User: AuthUser;
}

pub struct AuthSession<Backend: AuthnBackend> {
    data: Option<<<Backend as AuthnBackend>::User as AuthUser>::Id>,
}

pub trait Authz: Sized {
    type AuthnBackend: AuthnBackend<User = Self>;
}

pub fn run_query<User: Authz>(auth: AuthSession<User::AuthnBackend>) {}
//~^ ERROR the trait bound `User: AuthUser` is not satisfied [E0277]

fn main() {}