rust/tests/ui/traits/trivial_impl3.rs

20 lines
433 B
Rust

//! Check that we don't break orphan rules.
//! The dependency may add an impl for `u8` later,
//! which would break this crate. We want to avoid adding
//! more ways in which adding an impl can be a breaking change.
// aux-build:trivial3.rs
extern crate trivial3;
pub trait Foo {
fn foo()
where
Self: trivial3::Trait;
}
impl Foo for u8 {}
//~^ ERROR not all trait items implemented, missing: `foo`
fn main() {}