rust/tests/ui/nll/user-annotations/normalization.rs

18 lines
412 B
Rust

// Test that we enforce a `&'static` requirement that is only visible
// after normalization.
trait Foo { type Out; }
impl Foo for () { type Out = &'static u32; }
impl<'a> Foo for &'a () { type Out = &'a u32; }
fn main() {
let a = 22;
let _: <() as Foo>::Out = &a; //~ ERROR
let a = 22;
let _: <&'static () as Foo>::Out = &a; //~ ERROR
let a = 22;
let _: <&'_ () as Foo>::Out = &a;
}