rust/tests/ui/coherence/coherence-blanket-conflicts-with-specific-multidispatch.rs

29 lines
512 B
Rust

use std::fmt::Debug;
use std::default::Default;
// Test that a blank impl for all T conflicts with an impl for some
// specific T, even when there are multiple type parameters involved.
trait MyTrait<T> {
fn get(&self) -> T;
}
impl<T> MyTrait<T> for T {
fn get(&self) -> T {
panic!()
}
}
#[derive(Clone)]
struct MyType {
dummy: usize
}
impl MyTrait<MyType> for MyType {
//~^ ERROR E0119
fn get(&self) -> usize { (*self).clone() }
//~^ ERROR mismatched types
}
fn main() { }