1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
|
//! 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.
//! This test differs from `trivial_impl3` because there actually
//! exists any impl for `Trait`, which has an effect on coherence.
//@ aux-build:trivial4.rs
extern crate trivial4;
pub trait Foo {
fn foo()
where
Self: trivial4::Trait;
}
impl Foo for u8 {}
//~^ ERROR not all trait items implemented, missing: `foo`
fn main() {}
|
