rust/tests/ui/type-alias-impl-trait/struct-assignment-validity.rs

32 lines
552 B
Rust

//@ compile-flags: -Zvalidate-mir
//@ check-pass
// Check that we don't cause cycle errors when validating pre-`Reveal::All` MIR
// that assigns opaques through normalized projections.
#![feature(impl_trait_in_assoc_type)]
struct Bar;
trait Trait {
type Assoc;
fn foo() -> Foo;
}
impl Trait for Bar {
type Assoc = impl std::fmt::Debug;
fn foo() -> Foo
where
Self::Assoc:,
{
let x: <Bar as Trait>::Assoc = ();
Foo { field: () }
}
}
struct Foo {
field: <Bar as Trait>::Assoc,
}
fn main() {}