#![feature(type_alias_impl_trait)] type Bar<'a, 'b> = impl PartialEq> + std::fmt::Debug; fn bar<'a, 'b>(i: &'a i32) -> Bar<'a, 'b> { i //~^ ERROR can't compare `&i32` with `Bar<'b, 'static>` } type Foo<'a, 'b> = impl PartialEq> + std::fmt::Debug; fn foo<'a, 'b>(i: &'a i32) -> Foo<'a, 'b> { i //~^ ERROR can't compare `&i32` with `Foo<'static, 'b>` } type Moo<'a, 'b> = impl PartialEq> + std::fmt::Debug; fn moo<'a, 'b>(i: &'a i32) -> Moo<'a, 'b> { i //~^ ERROR can't compare `&i32` with `Moo<'static, 'a>` } fn main() { let meh = 42; let muh = 69; assert_eq!(bar(&meh), bar(&meh)); }