| #![allow(incomplete_features)] |
| #![feature(generic_associated_types)] |
| |
| // check-pass |
| |
| use std::rc::Rc; |
| use std::sync::Arc; |
| use std::ops::Deref; |
| |
| trait PointerFamily { |
| type Pointer<T>: Deref<Target = T>; |
| fn new<T>(value: T) -> Self::Pointer<T>; |
| } |
| |
| struct ArcFamily; |
| |
| impl PointerFamily for ArcFamily { |
| type Pointer<T> = Arc<T>; |
| fn new<T>(value: T) -> Self::Pointer<T> { |
| Arc::new(value) |
| } |
| } |
| |
| struct RcFamily; |
| |
| impl PointerFamily for RcFamily { |
| type Pointer<T> = Rc<T>; |
| fn new<T>(value: T) -> Self::Pointer<T> { |
| Rc::new(value) |
| } |
| } |
| |
| struct Foo<P: PointerFamily> { |
| bar: P::Pointer<String>, |
| } |
| |
| fn main() {} |