//@ run-rustfix pub trait Trait {} pub struct Foo; impl Trait for Foo {} fn foo<'x, P>( _post: P, x: &'x Foo, ) -> &'x impl Trait { x } pub fn bar<'t, T>( //~^ HELP: consider adding an explicit lifetime bound post: T, x: &'t Foo, ) -> &'t impl Trait { foo(post, x) //~^ ERROR: the parameter type `T` may not live long enough } fn main() {}