| #![feature(generic_associated_types)] |
| //~^ WARNING the feature `generic_associated_types` is incomplete |
| |
| use std::ops::Deref; |
| |
| // FIXME(#44265): "lifetime arguments are not allowed for this type" errors will be addressed in a |
| // follow-up PR. |
| |
| trait Iterable { |
| type Item<'a>; |
| type Iter<'a>: Iterator<Item = Self::Item<'a>>; |
| //~^ ERROR lifetime arguments are not allowed for this type [E0109] |
| |
| fn iter<'a>(&'a self) -> Self::Iter<'a>; |
| //~^ ERROR lifetime arguments are not allowed for this type [E0109] |
| } |
| |
| // Impl for struct type |
| impl<T> Iterable for Vec<T> { |
| type Item<'a> = &'a T; |
| type Iter<'a> = std::slice::Iter<'a, T>; |
| |
| fn iter<'a>(&'a self) -> Self::Iter<'a> { |
| //~^ ERROR lifetime arguments are not allowed for this type [E0109] |
| self.iter() |
| } |
| } |
| |
| // Impl for a primitive type |
| impl<T> Iterable for [T] { |
| type Item<'a> = &'a T; |
| type Iter<'a> = std::slice::Iter<'a, T>; |
| |
| fn iter<'a>(&'a self) -> Self::Iter<'a> { |
| //~^ ERROR lifetime arguments are not allowed for this type [E0109] |
| self.iter() |
| } |
| } |
| |
| fn make_iter<'a, I: Iterable>(it: &'a I) -> I::Iter<'a> { |
| //~^ ERROR lifetime arguments are not allowed for this type [E0109] |
| it.iter() |
| } |
| |
| fn get_first<'a, I: Iterable>(it: &'a I) -> Option<I::Item<'a>> { |
| //~^ ERROR lifetime arguments are not allowed for this type [E0109] |
| it.iter().next() |
| } |
| |
| fn main() {} |