| //@ known-bug: #117647 | |
| #![feature(lifetime_capture_rules_2024)] | |
| #![feature(rustc_attrs)] | |
| #![allow(internal_features)] | |
| #![rustc_variance_of_opaques] | |
| use std::ops::Deref; | |
| fn foo(x: Vec<i32>) -> Box<dyn for<'a> Deref<Target = impl ?Sized>> { | |
| Box::new(x) | |
| } | |
| fn main() {} |