mirror of https://github.com/rust-lang/rust
22 lines
508 B
Rust
22 lines
508 B
Rust
// Test that we do not allow the region `'x` to escape in the impl
|
|
// trait **even though** `'y` escapes, which outlives `'x`.
|
|
//
|
|
// See https://github.com/rust-lang/rust/issues/46541 for more details.
|
|
|
|
#![allow(dead_code)]
|
|
|
|
use std::cell::Cell;
|
|
|
|
trait Trait<'a> { }
|
|
|
|
impl<'a, 'b> Trait<'b> for Cell<&'a u32> { }
|
|
|
|
fn foo<'x, 'y>(x: Cell<&'x u32>) -> impl Trait<'y>
|
|
where 'x: 'y
|
|
{
|
|
x
|
|
//~^ ERROR hidden type for `impl Trait<'y>` captures lifetime that does not appear in bounds [E0700]
|
|
}
|
|
|
|
fn main() { }
|