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// Tests that we don't allow unconstrained lifetime parameters in impls when
// the lifetime is used in an associated opaque type.
#![feature(impl_trait_in_assoc_type)]
trait UnwrapItemsExt {
type Iter;
fn unwrap_items(self) -> Self::Iter;
}
struct MyStruct {}
trait MyTrait<'a> {}
impl<'a> MyTrait<'a> for MyStruct {}
impl<'a, I> UnwrapItemsExt for I {
//~^ ERROR the lifetime parameter `'a` is not constrained
type Iter = impl MyTrait<'a>;
fn unwrap_items(self) -> Self::Iter {
MyStruct {}
//~^ ERROR expected generic lifetime parameter
}
}
fn main() {}
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