13 lines
201 B
Rust
13 lines
201 B
Rust
#![allow(incomplete_features)]
|
|
|
|
trait Foo {
|
|
fn bar() -> impl std::fmt::Display;
|
|
}
|
|
|
|
impl Foo for () {
|
|
fn bar() -> () {}
|
|
//~^ ERROR `()` doesn't implement `std::fmt::Display`
|
|
}
|
|
|
|
fn main() {}
|