| // check-pass |
| // Regression test for #28871. The problem is that rustc encountered |
| // two ways to project, one from a where clause and one from the where |
| // clauses on the trait definition. (In fact, in this case, the where |
| // clauses originated from the trait definition as well.) The true |
| // cause of the error is that the trait definition where clauses are |
| // not being normalized, and hence the two sources are considered in |
| // conflict, and not a duplicate. Hacky solution is to prefer where |
| // clauses over the data found in the trait definition. |
| |
| trait T { |
| type T; |
| } |
| |
| struct S; |
| impl T for S { |
| type T = S; |
| } |
| |
| trait T2 { |
| type T: Iterator<Item=<S as T>::T>; |
| } |
| |
| fn main() { } |
