//! Show an uninformative diagnostic that we could possibly improve in the future | |
trait Trait<T> {} | |
impl<T, U> Trait<T> for U {} | |
fn hello() -> &'static (dyn Trait<impl Sized> + Send) { | |
//~^ ERROR: type annotations needed | |
if false { | |
let x = hello(); | |
let _: &'static dyn Trait<()> = &x; | |
//^ Note the extra `&`, paired with the blanket impl causing | |
// `impl Sized` to never get a hidden type registered. | |
} | |
todo!() | |
} | |
fn main() {} |