rust/tests/ui/type-alias-impl-trait/nested_type_alias_impl_trai...

21 lines
397 B
Rust

#![feature(type_alias_impl_trait)]
mod my_mod {
use std::fmt::Debug;
pub type Foo = impl Debug;
pub type Foot = impl Debug;
pub fn get_foo() -> Foo {
5i32
}
pub fn get_foot(_: Foo) -> Foot {
get_foo() //~ ERROR opaque type's hidden type cannot be another opaque type
}
}
fn main() {
let _: my_mod::Foot = my_mod::get_foot(my_mod::get_foo());
}