mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-30 10:45:18 +00:00
19 lines
462 B
Rust
19 lines
462 B
Rust
// 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)]
|
|
|
|
fn foo<'x, 'y>(x: &'x u32) -> impl Fn() -> &'y u32
|
|
where 'x: 'y
|
|
{
|
|
move || x
|
|
}
|
|
|
|
fn main() { }
|