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// 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() { }
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