rust/tests/ui/impl-trait/variance.rs
2025-04-08 23:06:31 +03:00

23 lines
579 B
Rust

//@ revisions: old e2024
//@[e2024] edition: 2024
#![feature(rustc_attrs)]
#![allow(internal_features)]
#![rustc_variance_of_opaques]
trait Captures<'a> {}
impl<T> Captures<'_> for T {}
fn not_captured_early<'a: 'a>() -> impl Sized {}
//[old]~^ ERROR ['a: *]
//[e2024]~^^ ERROR ['a: *, 'a: o]
fn captured_early<'a: 'a>() -> impl Sized + Captures<'a> {} //~ ERROR ['a: *, 'a: o]
fn not_captured_late<'a>(_: &'a ()) -> impl Sized {}
//[old]~^ ERROR []
//[e2024]~^^ ERROR ['a: o]
fn captured_late<'a>(_: &'a ()) -> impl Sized + Captures<'a> {} //~ ERROR ['a: o]
fn main() {}