1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
// User type annotation in fn bodies is a valid defining site for opaque types.
//@ check-pass
#![feature(type_alias_impl_trait)]
trait Equate { type Proj; }
impl<T> Equate for T { type Proj = T; }
trait Indirect { type Ty; }
impl<A, B: Equate<Proj = A>> Indirect for (A, B) { type Ty = (); }
mod basic {
use super::*;
type Opq = impl Sized;
fn define_1(_: Opq) {
let _ = None::<<(Opq, u8) as Indirect>::Ty>;
}
fn define_2() -> Opq {
0u8
}
}
// `Opq<'a> == &'b u8` shouldn't be an error because `'a == 'b`.
mod lifetime {
use super::*;
type Opq<'a> = impl Sized + 'a;
fn define<'a: 'b, 'b: 'a>(_: Opq<'a>) {
let _ = None::<<(Opq<'a>, &'b u8) as Indirect>::Ty>;
}
}
fn main() {}
|
