mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-30 10:45:18 +00:00
20 lines
357 B
Rust
20 lines
357 B
Rust
pub trait Trait1<X> {
|
|
type Output;
|
|
}
|
|
|
|
pub trait Trait2<X> {}
|
|
|
|
pub struct A;
|
|
|
|
impl<X, T> Trait1<X> for T where T: Trait2<X> {
|
|
type Output = ();
|
|
}
|
|
|
|
impl<X> Trait1<Box<X>> for A {
|
|
//~^ ERROR conflicting implementations of trait
|
|
//~| downstream crates may implement trait `Trait2<std::boxed::Box<_>>` for type `A`
|
|
type Output = i32;
|
|
}
|
|
|
|
fn main() {}
|