| // compile-flags: -Ztrait-solver=next |
| #![feature(rustc_attrs)] |
| |
| // Test that having both an inductive and a coinductive cycle |
| // is handled correctly. |
| |
| #[rustc_coinductive] |
| trait Trait {} |
| impl<T: Inductive + Coinductive> Trait for T {} |
| |
| trait Inductive {} |
| impl<T: Trait> Inductive for T {} |
| #[rustc_coinductive] |
| trait Coinductive {} |
| impl<T: Trait> Coinductive for T {} |
| |
| fn impls_trait<T: Trait>() {} |
| |
| #[rustc_coinductive] |
| trait TraitRev {} |
| impl<T: CoinductiveRev + InductiveRev> TraitRev for T {} |
| |
| trait InductiveRev {} |
| impl<T: TraitRev> InductiveRev for T {} |
| #[rustc_coinductive] |
| trait CoinductiveRev {} |
| impl<T: TraitRev> CoinductiveRev for T {} |
| |
| fn impls_trait_rev<T: TraitRev>() {} |
| |
| fn main() { |
| impls_trait::<()>(); |
| //~^ ERROR overflow evaluating the requirement |
| |
| impls_trait_rev::<()>(); |
| //~^ ERROR overflow evaluating the requirement |
| } |
