rust/tests/ui/impl-trait/multiple-lifetimes.rs

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// Test that multiple lifetimes are allowed in impl trait types.
// build-pass (FIXME(62277): could be check-pass?)
trait X<'x>: Sized {}
impl<U> X<'_> for U {}
fn multiple_lifeteimes<'a, 'b, T: 'static>(x: &'a mut &'b T) -> impl X<'b> + 'a {
x
}
fn main() {}