rust/tests/ui/impl-trait/variance.rs
2023-12-05 19:53:59 +00:00

29 lines
654 B
Rust

// revisions: old new e2024
//[e2024] edition: 2024
//[e2024] compile-flags: -Z unstable-options
#![cfg_attr(new, feature(lifetime_capture_rules_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]~^ [*]
//[new]~^^ [*, o]
//[e2024]~^^^ [*, o]
fn captured_early<'a: 'a>() -> impl Sized + Captures<'a> {} //~ [*, o]
fn not_captured_late<'a>(_: &'a ()) -> impl Sized {}
//[old]~^ []
//[new]~^^ [o]
//[e2024]~^^^ [o]
fn captured_late<'a>(_: &'a ()) -> impl Sized + Captures<'a> {} //~ [o]
fn main() {}