rust/tests/ui/coherence/coherence-projection-conflict-ty-param.rs
2023-01-11 09:32:08 +00:00

14 lines
279 B
Rust

// Coherence error results because we do not know whether `T: Foo<P>` or not
// for the second impl.
use std::marker::PhantomData;
pub trait Foo<P> { fn foo() {} }
impl <P, T: Foo<P>> Foo<P> for Option<T> {}
impl<T, U> Foo<T> for Option<U> { }
//~^ ERROR E0119
fn main() {}