| // Repro for <https://github.com/rust-lang/rust/issues/124757#issue-2279603232>. |
| //@ edition: 2021 |
| //@ revisions: assumptions no_assumptions |
| //@[assumptions] compile-flags: -Zhigher-ranked-assumptions |
| //@[assumptions] check-pass |
| //@[no_assumptions] known-bug: #110338 |
| |
| use std::collections::HashSet; |
| use std::future::Future; |
| |
| trait MyTrait { |
| fn blah(&self, x: impl Iterator<Item = u32>) -> impl Future<Output = ()> + Send; |
| } |
| |
| fn foo<T: MyTrait + Send + Sync>( |
| val: T, |
| unique_x: HashSet<u32>, |
| ) -> impl Future<Output = ()> + Send { |
| let cached = HashSet::new(); |
| async move { |
| let xs = unique_x.union(&cached) |
| // .copied() // works |
| .map(|x| *x) // error |
| ; |
| let blah = val.blah(xs.into_iter()).await; |
| } |
| } |
| |
| fn main() {} |
