rust/tests/ui/traits/stack-error-order-dependenc...

25 lines
555 B
Rust

//@ check-pass
// Regression test for <https://github.com/rust-lang/rust/issues/123303>.
// This time EXCEPT without `dyn` builtin bounds :^)
pub trait Trait: Supertrait {}
trait Impossible {}
impl<F: ?Sized + Impossible> Trait for F {}
pub trait Supertrait {}
impl<T: ?Sized + Trait + Impossible> Supertrait for T {}
fn needs_supertrait<T: ?Sized + Supertrait>() {}
fn needs_trait<T: ?Sized + Trait>() {}
struct A;
impl Trait for A where A: Supertrait {}
impl Supertrait for A {}
fn main() {
needs_supertrait::<A>();
needs_trait::<A>();
}