os-rust/src/test/ui/coherence/coherence-overlap-trait-alias.rs

21 lines
420 B
Rust
Raw Normal View History

2021-10-22 15:55:56 -03:00
#![feature(rustc_attrs)]
#![feature(trait_alias)]
trait A {}
trait B {}
trait AB = A + B;
impl A for u32 {}
impl B for u32 {}
trait C {}
#[rustc_strict_coherence]
impl<T: AB> C for T {}
#[rustc_strict_coherence]
impl C for u32 {}
//~^ ERROR
// FIXME it's giving an ungreat error but unsure if we care given that it's using an internal rustc
// attribute and an artificial code path for testing purposes
fn main() {}