// In contrast to `region-escape-via-bound-invariant`, in this case we | |
// *can* return a value of type `&'x u32`, even though `'x` does not | |
// appear in the bounds. This is because `&` is contravariant, and so | |
// we are *actually* returning a `&'y u32`. | |
// | |
// See https://github.com/rust-lang/rust/issues/46541 for more details. | |
// run-pass | |
#![allow(dead_code)] | |
#![feature(in_band_lifetimes)] | |
fn foo(x: &'x u32) -> impl Fn() -> &'y u32 | |
where 'x: 'y | |
{ | |
move || x | |
} | |
fn main() { } |