diff --git a/compiler/rustc_trait_selection/src/traits/select/confirmation.rs b/compiler/rustc_trait_selection/src/traits/select/confirmation.rs index 6db97fc321a8d..4cd6781ab8905 100644 --- a/compiler/rustc_trait_selection/src/traits/select/confirmation.rs +++ b/compiler/rustc_trait_selection/src/traits/select/confirmation.rs @@ -463,18 +463,8 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> { let cause = obligation.derived_cause(ObligationCauseCode::BuiltinDerived); assert_eq!(obligation.predicate.polarity(), ty::PredicatePolarity::Positive); - let trait_ref = - self.infcx.enter_forall_and_leak_universe(obligation.predicate).trait_ref; - let trait_obligations = self.impl_or_trait_obligations( - &cause, - obligation.recursion_depth + 1, - obligation.param_env, - trait_def_id, - trait_ref.args, - obligation.predicate, - ); - let mut obligations = self.collect_predicates_for_types( + let obligations = self.collect_predicates_for_types( obligation.param_env, cause, obligation.recursion_depth + 1, @@ -482,10 +472,6 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> { nested, ); - // Adds the predicates from the trait. Note that this contains a `Self: Trait` - // predicate as usual. It won't have any effect since auto traits are coinductive. - obligations.extend(trait_obligations); - debug!(?obligations, "vtable_auto_impl"); obligations diff --git a/tests/ui/traits/inductive-overflow/supertrait-auto-trait.rs b/tests/ui/traits/inductive-overflow/supertrait-auto-trait.rs index 5fea47a1be87d..ca31d39de9821 100644 --- a/tests/ui/traits/inductive-overflow/supertrait-auto-trait.rs +++ b/tests/ui/traits/inductive-overflow/supertrait-auto-trait.rs @@ -13,6 +13,6 @@ fn copy(x: T) -> (T, T) { (x, x) } struct NoClone; fn main() { - let (a, b) = copy(NoClone); //~ ERROR + let (a, b) = copy(NoClone); println!("{:?} {:?}", a, b); } diff --git a/tests/ui/traits/inductive-overflow/supertrait-auto-trait.stderr b/tests/ui/traits/inductive-overflow/supertrait-auto-trait.stderr index 07edc4ede7619..3a3b99f6c5b10 100644 --- a/tests/ui/traits/inductive-overflow/supertrait-auto-trait.stderr +++ b/tests/ui/traits/inductive-overflow/supertrait-auto-trait.stderr @@ -6,31 +6,6 @@ LL | auto trait Magic: Copy {} | | | auto traits cannot have super traits or lifetime bounds -error[E0277]: the trait bound `NoClone: Magic` is not satisfied - --> $DIR/supertrait-auto-trait.rs:16:23 - | -LL | let (a, b) = copy(NoClone); - | ---- ^^^^^^^ the trait `Copy` is not implemented for `NoClone` - | | - | required by a bound introduced by this call - | -note: required for `NoClone` to implement `Magic` - --> $DIR/supertrait-auto-trait.rs:8:12 - | -LL | auto trait Magic: Copy {} - | ^^^^^ -note: required by a bound in `copy` - --> $DIR/supertrait-auto-trait.rs:10:12 - | -LL | fn copy(x: T) -> (T, T) { (x, x) } - | ^^^^^ required by this bound in `copy` -help: consider annotating `NoClone` with `#[derive(Copy)]` - | -LL + #[derive(Copy)] -LL | struct NoClone; - | - -error: aborting due to 2 previous errors +error: aborting due to 1 previous error -Some errors have detailed explanations: E0277, E0568. -For more information about an error, try `rustc --explain E0277`. +For more information about this error, try `rustc --explain E0568`.