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//@ build-pass (FIXME(62277): could be check-pass?)
#![allow(unused)]
#![deny(explicit_outlives_requirements)]
// A case where we can't infer the outlives requirement. Example copied from
// RFC 2093.
// (https://rust-lang.github.io/rfcs/2093-infer-outlives.html
// #where-explicit-annotations-would-still-be-required)
trait MakeRef<'a> {
type Type;
}
impl<'a, T> MakeRef<'a> for Vec<T>
where T: 'a // still required
{
type Type = &'a T;
}
struct Foo<'a, T>
where T: 'a // still required, not inferred from `field`
{
field: <Vec<T> as MakeRef<'a>>::Type
}
fn main() {}
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