//@ known-bug: #109481 | |
// | |
// While the `T: Copy` is always applicable when checking | |
// that the impl `impl<T: Copy> F for T {}` is well formed, | |
// the old trait solver can only approximate this by checking | |
// that there are no inference variables in the obligation and | |
// no region constraints in the evaluation result. | |
// | |
// Because of this we end up with ambiguity here. | |
#![feature(marker_trait_attr)] | |
#[marker] | |
pub trait F {} | |
impl<T: Copy> F for T {} | |
impl<T: 'static> F for T {} | |
fn main() {} |