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//@ run-pass
// Test that we handle binder levels correctly when checking whether a
// type can implement `Copy`. In particular, we had a bug where we failed to
// liberate the late-bound regions from the impl, and thus wound up
// searching for an impl of `for<'tcx> Foo<&'tcx T>`. The impl that
// exists however is `impl<T> Copy for Foo<T>` and the current rules
// did not consider that a match (something I would like to revise in
// a later PR).
#![allow(dead_code)]
use std::marker::PhantomData;
#[derive(Copy, Clone)]
struct Foo<T> { x: T }
type Ty<'tcx> = &'tcx TyS<'tcx>;
enum TyS<'tcx> {
Boop(PhantomData<*mut &'tcx ()>)
}
#[derive(Copy, Clone)]
enum Bar<'tcx> {
Baz(Foo<Ty<'tcx>>)
}
fn main() { }
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