| //@ revisions: current next |
| //@ ignore-compare-mode-next-solver (explicit revisions) |
| //@[next] compile-flags: -Znext-solver |
| //@[next] check-pass |
| //@[current] known-bug: unknown |
| //@[current] failure-status: 101 |
| //@[current] dont-check-compiler-stderr |
| |
| // Tests that rebasing from the concrete impl to the default impl also processes the |
| // `[u32; 0]: IntoIterator<Item = ?U>` predicate to constrain the `?U` impl arg. |
| // This test also makes sure that we don't do anything weird when rebasing the args |
| // is ambiguous. |
| |
| #![feature(specialization)] |
| //[next]~^ WARN the feature `specialization` is incomplete |
| |
| trait Spec { |
| type Assoc; |
| } |
| |
| default impl<T, U> Spec for T where T: IntoIterator<Item = U> { |
| type Assoc = U; |
| } |
| |
| impl<T> Spec for [T; 0] {} |
| |
| fn main() { |
| let x: <[_; 0] as Spec>::Assoc = 1; |
| } |
