9 lines
179 B
Rust
9 lines
179 B
Rust
|
#![crate_type = "lib"]
|
||
|
|
#![feature(negative_impls)]
|
||
|
|
#![feature(rustc_attrs)]
|
||
|
|
|
||
|
|
pub trait Future {}
|
||
|
|
|
||
|
|
#[rustc_with_negative_coherence]
|
||
|
|
impl<E> !Future for Option<E> where E: Sized {}
|