diff options
15 files changed, 704 insertions, 1102 deletions
diff --git a/compiler/rustc_error_codes/src/error_codes/E0719.md b/compiler/rustc_error_codes/src/error_codes/E0719.md index cd981db1058..6aec38b42a3 100644 --- a/compiler/rustc_error_codes/src/error_codes/E0719.md +++ b/compiler/rustc_error_codes/src/error_codes/E0719.md @@ -1,4 +1,4 @@ -An associated type value was specified more than once. +An associated item was specified more than once in a trait object. Erroneous code example: @@ -7,21 +7,15 @@ trait FooTrait {} trait BarTrait {} // error: associated type `Item` in trait `Iterator` is specified twice -struct Foo<T: Iterator<Item: FooTrait, Item: BarTrait>> { f: T } +type Foo = dyn Iterator<Item = u32, Item = u32>; ``` -`Item` in trait `Iterator` cannot be specified multiple times for struct `Foo`. -To fix this, create a new trait that is a combination of the desired traits and -specify the associated type with the new trait. +To fix this, remove the duplicate specifier: Corrected example: ``` -trait FooTrait {} -trait BarTrait {} -trait FooBarTrait: FooTrait + BarTrait {} - -struct Foo<T: Iterator<Item: FooBarTrait>> { f: T } // ok! +type Foo = dyn Iterator<Item = u32>; // ok! ``` For more information about associated types, see [the book][bk-at]. For more diff --git a/compiler/rustc_hir_analysis/src/collect/item_bounds.rs b/compiler/rustc_hir_analysis/src/collect/item_bounds.rs index ba54fa8cc0d..9841fafc82c 100644 --- a/compiler/rustc_hir_analysis/src/collect/item_bounds.rs +++ b/compiler/rustc_hir_analysis/src/collect/item_bounds.rs @@ -12,7 +12,7 @@ use tracing::{debug, instrument}; use super::ItemCtxt; use super::predicates_of::assert_only_contains_predicates_from; -use crate::hir_ty_lowering::{HirTyLowerer, PredicateFilter}; +use crate::hir_ty_lowering::{HirTyLowerer, OverlappingAsssocItemConstraints, PredicateFilter}; /// For associated types we include both bounds written on the type /// (`type X: Trait`) and predicates from the trait: `where Self::X: Trait`. @@ -37,7 +37,14 @@ fn associated_type_bounds<'tcx>( let icx = ItemCtxt::new(tcx, assoc_item_def_id); let mut bounds = Vec::new(); - icx.lowerer().lower_bounds(item_ty, hir_bounds, &mut bounds, ty::List::empty(), filter); + icx.lowerer().lower_bounds( + item_ty, + hir_bounds, + &mut bounds, + ty::List::empty(), + filter, + OverlappingAsssocItemConstraints::Allowed, + ); match filter { PredicateFilter::All @@ -347,7 +354,14 @@ fn opaque_type_bounds<'tcx>( ty::print::with_reduced_queries!({ let icx = ItemCtxt::new(tcx, opaque_def_id); let mut bounds = Vec::new(); - icx.lowerer().lower_bounds(item_ty, hir_bounds, &mut bounds, ty::List::empty(), filter); + icx.lowerer().lower_bounds( + item_ty, + hir_bounds, + &mut bounds, + ty::List::empty(), + filter, + OverlappingAsssocItemConstraints::Allowed, + ); // Implicit bounds are added to opaque types unless a `?Trait` bound is found match filter { PredicateFilter::All diff --git a/compiler/rustc_hir_analysis/src/collect/predicates_of.rs b/compiler/rustc_hir_analysis/src/collect/predicates_of.rs index dd3590f9ac5..ffdf2a2f4c0 100644 --- a/compiler/rustc_hir_analysis/src/collect/predicates_of.rs +++ b/compiler/rustc_hir_analysis/src/collect/predicates_of.rs @@ -18,7 +18,9 @@ use super::item_bounds::explicit_item_bounds_with_filter; use crate::collect::ItemCtxt; use crate::constrained_generic_params as cgp; use crate::delegation::inherit_predicates_for_delegation_item; -use crate::hir_ty_lowering::{HirTyLowerer, PredicateFilter, RegionInferReason}; +use crate::hir_ty_lowering::{ + HirTyLowerer, OverlappingAsssocItemConstraints, PredicateFilter, RegionInferReason, +}; /// Returns a list of all type predicates (explicit and implicit) for the definition with /// ID `def_id`. This includes all predicates returned by `explicit_predicates_of`, plus @@ -187,6 +189,7 @@ fn gather_explicit_predicates_of(tcx: TyCtxt<'_>, def_id: LocalDefId) -> ty::Gen &mut bounds, ty::List::empty(), PredicateFilter::All, + OverlappingAsssocItemConstraints::Allowed, ); icx.lowerer().add_sizedness_bounds( &mut bounds, @@ -289,6 +292,7 @@ fn gather_explicit_predicates_of(tcx: TyCtxt<'_>, def_id: LocalDefId) -> ty::Gen &mut bounds, bound_vars, PredicateFilter::All, + OverlappingAsssocItemConstraints::Allowed, ); predicates.extend(bounds); } @@ -659,7 +663,14 @@ pub(super) fn implied_predicates_with_filter<'tcx>( let self_param_ty = tcx.types.self_param; let mut bounds = Vec::new(); - icx.lowerer().lower_bounds(self_param_ty, superbounds, &mut bounds, ty::List::empty(), filter); + icx.lowerer().lower_bounds( + self_param_ty, + superbounds, + &mut bounds, + ty::List::empty(), + filter, + OverlappingAsssocItemConstraints::Allowed, + ); match filter { PredicateFilter::All | PredicateFilter::SelfOnly @@ -984,6 +995,7 @@ impl<'tcx> ItemCtxt<'tcx> { &mut bounds, bound_vars, filter, + OverlappingAsssocItemConstraints::Allowed, ); } @@ -1063,6 +1075,7 @@ pub(super) fn const_conditions<'tcx>( &mut bounds, bound_vars, PredicateFilter::ConstIfConst, + OverlappingAsssocItemConstraints::Allowed, ); } _ => {} @@ -1083,6 +1096,7 @@ pub(super) fn const_conditions<'tcx>( &mut bounds, ty::List::empty(), PredicateFilter::ConstIfConst, + OverlappingAsssocItemConstraints::Allowed, ); } diff --git a/compiler/rustc_hir_analysis/src/hir_ty_lowering/bounds.rs b/compiler/rustc_hir_analysis/src/hir_ty_lowering/bounds.rs index 99dc8e6e522..8682fdc5494 100644 --- a/compiler/rustc_hir_analysis/src/hir_ty_lowering/bounds.rs +++ b/compiler/rustc_hir_analysis/src/hir_ty_lowering/bounds.rs @@ -21,7 +21,8 @@ use tracing::{debug, instrument}; use super::errors::GenericsArgsErrExtend; use crate::errors; use crate::hir_ty_lowering::{ - AssocItemQSelf, FeedConstTy, HirTyLowerer, PredicateFilter, RegionInferReason, + AssocItemQSelf, FeedConstTy, HirTyLowerer, OverlappingAsssocItemConstraints, PredicateFilter, + RegionInferReason, }; #[derive(Debug, Default)] @@ -338,6 +339,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ { bounds: &mut Vec<(ty::Clause<'tcx>, Span)>, bound_vars: &'tcx ty::List<ty::BoundVariableKind>, predicate_filter: PredicateFilter, + overlapping_assoc_constraints: OverlappingAsssocItemConstraints, ) where 'tcx: 'hir, { @@ -362,6 +364,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ { param_ty, bounds, predicate_filter, + overlapping_assoc_constraints, ); } hir::GenericBound::Outlives(lifetime) => { @@ -402,7 +405,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ { trait_ref: ty::PolyTraitRef<'tcx>, constraint: &hir::AssocItemConstraint<'tcx>, bounds: &mut Vec<(ty::Clause<'tcx>, Span)>, - duplicates: &mut FxIndexMap<DefId, Span>, + duplicates: Option<&mut FxIndexMap<DefId, Span>>, path_span: Span, predicate_filter: PredicateFilter, ) -> Result<(), ErrorGuaranteed> { @@ -458,17 +461,19 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ { ) .expect("failed to find associated item"); - duplicates - .entry(assoc_item.def_id) - .and_modify(|prev_span| { - self.dcx().emit_err(errors::ValueOfAssociatedStructAlreadySpecified { - span: constraint.span, - prev_span: *prev_span, - item_name: constraint.ident, - def_path: tcx.def_path_str(assoc_item.container_id(tcx)), - }); - }) - .or_insert(constraint.span); + if let Some(duplicates) = duplicates { + duplicates + .entry(assoc_item.def_id) + .and_modify(|prev_span| { + self.dcx().emit_err(errors::ValueOfAssociatedStructAlreadySpecified { + span: constraint.span, + prev_span: *prev_span, + item_name: constraint.ident, + def_path: tcx.def_path_str(assoc_item.container_id(tcx)), + }); + }) + .or_insert(constraint.span); + } let projection_term = if let ty::AssocTag::Fn = assoc_tag { let bound_vars = tcx.late_bound_vars(constraint.hir_id); @@ -600,6 +605,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ { bounds, projection_ty.bound_vars(), predicate_filter, + OverlappingAsssocItemConstraints::Allowed, ); } PredicateFilter::SelfOnly diff --git a/compiler/rustc_hir_analysis/src/hir_ty_lowering/dyn_trait.rs b/compiler/rustc_hir_analysis/src/hir_ty_lowering/dyn_trait.rs index c248cd7fec2..c0b13773089 100644 --- a/compiler/rustc_hir_analysis/src/hir_ty_lowering/dyn_trait.rs +++ b/compiler/rustc_hir_analysis/src/hir_ty_lowering/dyn_trait.rs @@ -23,7 +23,9 @@ use tracing::{debug, instrument}; use super::HirTyLowerer; use crate::errors::SelfInTypeAlias; -use crate::hir_ty_lowering::{GenericArgCountMismatch, PredicateFilter, RegionInferReason}; +use crate::hir_ty_lowering::{ + GenericArgCountMismatch, OverlappingAsssocItemConstraints, PredicateFilter, RegionInferReason, +}; impl<'tcx> dyn HirTyLowerer<'tcx> + '_ { /// Lower a trait object type from the HIR to our internal notion of a type. @@ -60,6 +62,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ { dummy_self, &mut user_written_bounds, PredicateFilter::SelfOnly, + OverlappingAsssocItemConstraints::Forbidden, ); if let Err(GenericArgCountMismatch { invalid_args, .. }) = result.correct { potential_assoc_types.extend(invalid_args); @@ -157,10 +160,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ { self.dcx() .struct_span_err( span, - format!( - "conflicting associated type bounds for `{item}` when \ - expanding trait alias" - ), + format!("conflicting associated type bounds for `{item}`"), ) .with_span_label( old_proj_span, diff --git a/compiler/rustc_hir_analysis/src/hir_ty_lowering/mod.rs b/compiler/rustc_hir_analysis/src/hir_ty_lowering/mod.rs index 9b198d04454..eb660804c2b 100644 --- a/compiler/rustc_hir_analysis/src/hir_ty_lowering/mod.rs +++ b/compiler/rustc_hir_analysis/src/hir_ty_lowering/mod.rs @@ -332,6 +332,15 @@ pub(crate) enum GenericArgPosition { MethodCall, } +/// Whether to allow duplicate associated iten constraints in a trait ref, e.g. +/// `Trait<Assoc = Ty, Assoc = Ty>`. This is forbidden in `dyn Trait<...>` +/// but allowed everywhere else. +#[derive(Clone, Copy, Debug, PartialEq)] +pub(crate) enum OverlappingAsssocItemConstraints { + Allowed, + Forbidden, +} + /// A marker denoting that the generic arguments that were /// provided did not match the respective generic parameters. #[derive(Clone, Debug)] @@ -752,6 +761,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ { self_ty: Ty<'tcx>, bounds: &mut Vec<(ty::Clause<'tcx>, Span)>, predicate_filter: PredicateFilter, + overlapping_assoc_item_constraints: OverlappingAsssocItemConstraints, ) -> GenericArgCountResult { let tcx = self.tcx(); @@ -908,7 +918,10 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ { } } - let mut dup_constraints = FxIndexMap::default(); + let mut dup_constraints = (overlapping_assoc_item_constraints + == OverlappingAsssocItemConstraints::Forbidden) + .then_some(FxIndexMap::default()); + for constraint in trait_segment.args().constraints { // Don't register any associated item constraints for negative bounds, // since we should have emitted an error for them earlier, and they @@ -927,7 +940,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ { poly_trait_ref, constraint, bounds, - &mut dup_constraints, + dup_constraints.as_mut(), constraint.span, predicate_filter, ); @@ -2484,6 +2497,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ { &mut bounds, ty::List::empty(), PredicateFilter::All, + OverlappingAsssocItemConstraints::Allowed, ); self.add_sizedness_bounds( &mut bounds, diff --git a/tests/ui/associated-type-bounds/duplicate-bound-err.rs b/tests/ui/associated-type-bounds/duplicate-bound-err.rs new file mode 100644 index 00000000000..01cc05f2545 --- /dev/null +++ b/tests/ui/associated-type-bounds/duplicate-bound-err.rs @@ -0,0 +1,114 @@ +//@ edition: 2024 + +#![feature(associated_const_equality, type_alias_impl_trait, return_type_notation)] +#![allow(refining_impl_trait_internal)] + +use std::iter; + +fn rpit1() -> impl Iterator<Item: Copy, Item: Send> { + iter::empty() + //~^ ERROR type annotations needed +} +fn rpit2() -> impl Iterator<Item: Copy, Item: Copy> { + iter::empty() + //~^ ERROR type annotations needed +} +fn rpit3() -> impl Iterator<Item: 'static, Item: 'static> { + iter::empty() + //~^ ERROR type annotations needed +} + +type Tait1<T: Iterator<Item: Copy, Item: Send>> = impl Copy; +//~^ ERROR unconstrained opaque type +type Tait2<T: Iterator<Item: Copy, Item: Copy>> = impl Copy; +//~^ ERROR unconstrained opaque type +type Tait3<T: Iterator<Item: 'static, Item: 'static>> = impl Copy; +//~^ ERROR unconstrained opaque type + +type Tait4 = impl Iterator<Item: Copy, Item: Send>; +//~^ ERROR unconstrained opaque type +type Tait5 = impl Iterator<Item: Copy, Item: Copy>; +//~^ ERROR unconstrained opaque type +type Tait6 = impl Iterator<Item: 'static, Item: 'static>; +//~^ ERROR unconstrained opaque type + +fn mismatch() -> impl Iterator<Item: Copy, Item: Send> { + //~^ ERROR [E0277] + iter::empty::<*const ()>() +} + +fn mismatch_2() -> impl Iterator<Item: Copy, Item: Send> { + //~^ ERROR [E0277] + iter::empty::<String>() +} + +trait Trait { + type Gat<T>; + + const ASSOC: i32; + + fn foo() -> impl Sized; +} + +impl Trait for () { + type Gat<T> = (); + + const ASSOC: i32 = 3; + + fn foo() {} +} + +impl Trait for u32 { + type Gat<T> = (); + + const ASSOC: i32 = 4; + + fn foo() -> u32 { + 42 + } +} + +fn uncallable(_: impl Iterator<Item = i32, Item = u32>) {} + +fn uncallable_const(_: impl Trait<ASSOC = 3, ASSOC = 4>) {} + +fn uncallable_rtn(_: impl Trait<foo(..): Trait<ASSOC = 3>, foo(..): Trait<ASSOC = 4>>) {} + +type MustFail = dyn Iterator<Item = i32, Item = u32>; +//~^ ERROR [E0719] +//~| ERROR conflicting associated type bounds + +trait Trait2 { + const ASSOC: u32; +} + +type MustFail2 = dyn Trait2<ASSOC = 3u32, ASSOC = 4u32>; +//~^ ERROR [E0719] +//~| ERROR conflicting associated type bounds + +type MustFail3 = dyn Iterator<Item = i32, Item = i32>; +//~^ ERROR [E0719] + +type MustFail4 = dyn Trait2<ASSOC = 3u32, ASSOC = 3u32>; +//~^ ERROR [E0719] + +trait Trait3 { + fn foo() -> impl Iterator<Item = i32, Item = u32>; +} + +impl Trait3 for () { + fn foo() -> impl Iterator<Item = i32, Item = u32> { + //~^ ERROR[E0271] + //~| ERROR[E0271] + [2u32].into_iter() + } +} + +fn main() { + uncallable(iter::empty::<u32>()); //~ ERROR [E0271] + uncallable(iter::empty::<i32>()); //~ ERROR [E0271] + uncallable_const(()); //~ ERROR [E0271] + uncallable_const(4u32); //~ ERROR [E0271] + uncallable_rtn(()); //~ ERROR [E0271] + uncallable_rtn(17u32); //~ ERROR [E0271] +} diff --git a/tests/ui/associated-type-bounds/duplicate-bound-err.stderr b/tests/ui/associated-type-bounds/duplicate-bound-err.stderr new file mode 100644 index 00000000000..1737d0dc5a3 --- /dev/null +++ b/tests/ui/associated-type-bounds/duplicate-bound-err.stderr @@ -0,0 +1,268 @@ +error[E0282]: type annotations needed + --> $DIR/duplicate-bound-err.rs:9:5 + | +LL | iter::empty() + | ^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the function `empty` + | +help: consider specifying the generic argument + | +LL | iter::empty::<T>() + | +++++ + +error[E0282]: type annotations needed + --> $DIR/duplicate-bound-err.rs:13:5 + | +LL | iter::empty() + | ^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the function `empty` + | +help: consider specifying the generic argument + | +LL | iter::empty::<T>() + | +++++ + +error[E0282]: type annotations needed + --> $DIR/duplicate-bound-err.rs:17:5 + | +LL | iter::empty() + | ^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the function `empty` + | +help: consider specifying the generic argument + | +LL | iter::empty::<T>() + | +++++ + +error: unconstrained opaque type + --> $DIR/duplicate-bound-err.rs:21:51 + | +LL | type Tait1<T: Iterator<Item: Copy, Item: Send>> = impl Copy; + | ^^^^^^^^^ + | + = note: `Tait1` must be used in combination with a concrete type within the same crate + +error: unconstrained opaque type + --> $DIR/duplicate-bound-err.rs:23:51 + | +LL | type Tait2<T: Iterator<Item: Copy, Item: Copy>> = impl Copy; + | ^^^^^^^^^ + | + = note: `Tait2` must be used in combination with a concrete type within the same crate + +error: unconstrained opaque type + --> $DIR/duplicate-bound-err.rs:25:57 + | +LL | type Tait3<T: Iterator<Item: 'static, Item: 'static>> = impl Copy; + | ^^^^^^^^^ + | + = note: `Tait3` must be used in combination with a concrete type within the same crate + +error: unconstrained opaque type + --> $DIR/duplicate-bound-err.rs:28:14 + | +LL | type Tait4 = impl Iterator<Item: Copy, Item: Send>; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: `Tait4` must be used in combination with a concrete type within the same crate + +error: unconstrained opaque type + --> $DIR/duplicate-bound-err.rs:30:14 + | +LL | type Tait5 = impl Iterator<Item: Copy, Item: Copy>; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: `Tait5` must be used in combination with a concrete type within the same crate + +error: unconstrained opaque type + --> $DIR/duplicate-bound-err.rs:32:14 + | +LL | type Tait6 = impl Iterator<Item: 'static, Item: 'static>; + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: `Tait6` must be used in combination with a concrete type within the same crate + +error[E0277]: `*const ()` cannot be sent between threads safely + --> $DIR/duplicate-bound-err.rs:35:18 + | +LL | fn mismatch() -> impl Iterator<Item: Copy, Item: Send> { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `*const ()` cannot be sent between threads safely +LL | +LL | iter::empty::<*const ()>() + | -------------------------- return type was inferred to be `std::iter::Empty<*const ()>` here + | + = help: the trait `Send` is not implemented for `*const ()` + +error[E0277]: the trait bound `String: Copy` is not satisfied + --> $DIR/duplicate-bound-err.rs:40:20 + | +LL | fn mismatch_2() -> impl Iterator<Item: Copy, Item: Send> { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Copy` is not implemented for `String` +LL | +LL | iter::empty::<String>() + | ----------------------- return type was inferred to be `std::iter::Empty<String>` here + +error[E0271]: expected `IntoIter<u32, 1>` to be an iterator that yields `i32`, but it yields `u32` + --> $DIR/duplicate-bound-err.rs:100:17 + | +LL | fn foo() -> impl Iterator<Item = i32, Item = u32> { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `i32`, found `u32` +... +LL | [2u32].into_iter() + | ------------------ return type was inferred to be `std::array::IntoIter<u32, 1>` here + +error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified + --> $DIR/duplicate-bound-err.rs:77:42 + | +LL | type MustFail = dyn Iterator<Item = i32, Item = u32>; + | ---------- ^^^^^^^^^^ re-bound here + | | + | `Item` bound here first + +error: conflicting associated type bounds for `Item` + --> $DIR/duplicate-bound-err.rs:77:17 + | +LL | type MustFail = dyn Iterator<Item = i32, Item = u32>; + | ^^^^^^^^^^^^^----------^^----------^ + | | | + | | `Item` is specified to be `u32` here + | `Item` is specified to be `i32` here + +error[E0719]: the value of the associated type `ASSOC` in trait `Trait2` is already specified + --> $DIR/duplicate-bound-err.rs:85:43 + | +LL | type MustFail2 = dyn Trait2<ASSOC = 3u32, ASSOC = 4u32>; + | ------------ ^^^^^^^^^^^^ re-bound here + | | + | `ASSOC` bound here first + +error: conflicting associated type bounds for `ASSOC` + --> $DIR/duplicate-bound-err.rs:85:18 + | +LL | type MustFail2 = dyn Trait2<ASSOC = 3u32, ASSOC = 4u32>; + | ^^^^^^^^^^^------------^^------------^ + | | | + | | `ASSOC` is specified to be `4` here + | `ASSOC` is specified to be `3` here + +error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified + --> $DIR/duplicate-bound-err.rs:89:43 + | +LL | type MustFail3 = dyn Iterator<Item = i32, Item = i32>; + | ---------- ^^^^^^^^^^ re-bound here + | | + | `Item` bound here first + +error[E0719]: the value of the associated type `ASSOC` in trait `Trait2` is already specified + --> $DIR/duplicate-bound-err.rs:92:43 + | +LL | type MustFail4 = dyn Trait2<ASSOC = 3u32, ASSOC = 3u32>; + | ------------ ^^^^^^^^^^^^ re-bound here + | | + | `ASSOC` bound here first + +error[E0271]: expected `impl Iterator<Item = u32>` to be an iterator that yields `i32`, but it yields `u32` + --> $DIR/duplicate-bound-err.rs:100:17 + | +LL | fn foo() -> impl Iterator<Item = i32, Item = u32> { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `i32`, found `u32` + | +note: required by a bound in `Trait3::foo::{anon_assoc#0}` + --> $DIR/duplicate-bound-err.rs:96:31 + | +LL | fn foo() -> impl Iterator<Item = i32, Item = u32>; + | ^^^^^^^^^^ required by this bound in `Trait3::foo::{anon_assoc#0}` + +error[E0271]: expected `Empty<u32>` to be an iterator that yields `i32`, but it yields `u32` + --> $DIR/duplicate-bound-err.rs:108:16 + | +LL | uncallable(iter::empty::<u32>()); + | ---------- ^^^^^^^^^^^^^^^^^^^^ expected `i32`, found `u32` + | | + | required by a bound introduced by this call + | +note: required by a bound in `uncallable` + --> $DIR/duplicate-bound-err.rs:71:32 + | +LL | fn uncallable(_: impl Iterator<Item = i32, Item = u32>) {} + | ^^^^^^^^^^ required by this bound in `uncallable` + +error[E0271]: expected `Empty<i32>` to be an iterator that yields `u32`, but it yields `i32` + --> $DIR/duplicate-bound-err.rs:109:16 + | +LL | uncallable(iter::empty::<i32>()); + | ---------- ^^^^^^^^^^^^^^^^^^^^ expected `u32`, found `i32` + | | + | required by a bound introduced by this call + | +note: required by a bound in `uncallable` + --> $DIR/duplicate-bound-err.rs:71:44 + | +LL | fn uncallable(_: impl Iterator<Item = i32, Item = u32>) {} + | ^^^^^^^^^^ required by this bound in `uncallable` + +error[E0271]: type mismatch resolving `<() as Trait>::ASSOC == 4` + --> $DIR/duplicate-bound-err.rs:110:22 + | +LL | uncallable_const(()); + | ---------------- ^^ expected `4`, found `3` + | | + | required by a bound introduced by this call + | + = note: expected constant `4` + found constant `3` +note: required by a bound in `uncallable_const` + --> $DIR/duplicate-bound-err.rs:73:46 + | +LL | fn uncallable_const(_: impl Trait<ASSOC = 3, ASSOC = 4>) {} + | ^^^^^^^^^ required by this bound in `uncallable_const` + +error[E0271]: type mismatch resolving `<u32 as Trait>::ASSOC == 3` + --> $DIR/duplicate-bound-err.rs:111:22 + | +LL | uncallable_const(4u32); + | ---------------- ^^^^ expected `3`, found `4` + | | + | required by a bound introduced by this call + | + = note: expected constant `3` + found constant `4` +note: required by a bound in `uncallable_const` + --> $DIR/duplicate-bound-err.rs:73:35 + | +LL | fn uncallable_const(_: impl Trait<ASSOC = 3, ASSOC = 4>) {} + | ^^^^^^^^^ required by this bound in `uncallable_const` + +error[E0271]: type mismatch resolving `<() as Trait>::ASSOC == 4` + --> $DIR/duplicate-bound-err.rs:112:20 + | +LL | uncallable_rtn(()); + | -------------- ^^ expected `4`, found `3` + | | + | required by a bound introduced by this call + | + = note: expected constant `4` + found constant `3` +note: required by a bound in `uncallable_rtn` + --> $DIR/duplicate-bound-err.rs:75:75 + | +LL | fn uncallable_rtn(_: impl Trait<foo(..): Trait<ASSOC = 3>, foo(..): Trait<ASSOC = 4>>) {} + | ^^^^^^^^^ required by this bound in `uncallable_rtn` + +error[E0271]: type mismatch resolving `<u32 as Trait>::ASSOC == 3` + --> $DIR/duplicate-bound-err.rs:113:20 + | +LL | uncallable_rtn(17u32); + | -------------- ^^^^^ expected `3`, found `4` + | | + | required by a bound introduced by this call + | + = note: expected constant `3` + found constant `4` +note: required by a bound in `uncallable_rtn` + --> $DIR/duplicate-bound-err.rs:75:48 + | +LL | fn uncallable_rtn(_: impl Trait<foo(..): Trait<ASSOC = 3>, foo(..): Trait<ASSOC = 4>>) {} + | ^^^^^^^^^ required by this bound in `uncallable_rtn` + +error: aborting due to 25 previous errors + +Some errors have detailed explanations: E0271, E0277, E0282, E0719. +For more information about an error, try `rustc --explain E0271`. diff --git a/tests/ui/associated-type-bounds/duplicate-bound.rs b/tests/ui/associated-type-bounds/duplicate-bound.rs new file mode 100644 index 00000000000..696710d76f6 --- /dev/null +++ b/tests/ui/associated-type-bounds/duplicate-bound.rs @@ -0,0 +1,240 @@ +//@ edition: 2024 +//@ run-pass + +#![feature(associated_const_equality, return_type_notation)] +#![allow(dead_code, refining_impl_trait_internal, type_alias_bounds)] + +use std::iter; +use std::mem::ManuallyDrop; + +struct Si1<T: Iterator<Item: Copy, Item: Send>> { + f: T, +} +struct Si2<T: Iterator<Item: Copy, Item: Copy>> { + f: T, +} +struct Si3<T: Iterator<Item: 'static, Item: 'static>> { + f: T, +} +struct Sw1<T> +where + T: Iterator<Item: Copy, Item: Send>, +{ + f: T, +} +struct Sw2<T> +where + T: Iterator<Item: Copy, Item: Copy>, +{ + f: T, +} +struct Sw3<T> +where + T: Iterator<Item: 'static, Item: 'static>, +{ + f: T, +} + +enum Ei1<T: Iterator<Item: Copy, Item: Send>> { + V(T), +} +enum Ei2<T: Iterator<Item: Copy, Item: Copy>> { + V(T), +} +enum Ei3<T: Iterator<Item: 'static, Item: 'static>> { + V(T), +} +enum Ew1<T> +where + T: Iterator<Item: Copy, Item: Send>, +{ + V(T), +} +enum Ew2<T> +where + T: Iterator<Item: Copy, Item: Copy>, +{ + V(T), +} +enum Ew3<T> +where + T: Iterator<Item: 'static, Item: 'static>, +{ + V(T), +} + +union Ui1<T: Iterator<Item: Copy, Item: Send>> { + f: ManuallyDrop<T>, +} +union Ui2<T: Iterator<Item: Copy, Item: Copy>> { + f: ManuallyDrop<T>, +} +union Ui3<T: Iterator<Item: 'static, Item: 'static>> { + f: ManuallyDrop<T>, +} +union Uw1<T> +where + T: Iterator<Item: Copy, Item: Send>, +{ + f: ManuallyDrop<T>, +} +union Uw2<T> +where + T: Iterator<Item: Copy, Item: Copy>, +{ + f: ManuallyDrop<T>, +} +union Uw3<T> +where + T: Iterator<Item: 'static, Item: 'static>, +{ + f: ManuallyDrop<T>, +} + +fn fi1<T: Iterator<Item: Copy, Item: Send>>() {} +fn fi2<T: Iterator<Item: Copy, Item: Copy>>() {} +fn fi3<T: Iterator<Item: 'static, Item: 'static>>() {} +fn fw1<T>() +where + T: Iterator<Item: Copy, Item: Send>, +{ +} +fn fw2<T>() +where + T: Iterator<Item: Copy, Item: Copy>, +{ +} +fn fw3<T>() +where + T: Iterator<Item: 'static, Item: 'static>, +{ +} + +fn rpit1() -> impl Iterator<Item: Copy, Item: Send> { + iter::empty::<u32>() +} +fn rpit2() -> impl Iterator<Item: Copy, Item: Copy> { + iter::empty::<u32>() +} +fn rpit3() -> impl Iterator<Item: 'static, Item: 'static> { + iter::empty::<u32>() +} +fn apit1(_: impl Iterator<Item: Copy, Item: Send>) {} +fn apit2(_: impl Iterator<Item: Copy, Item: Copy>) {} +fn apit3(_: impl Iterator<Item: 'static, Item: 'static>) {} + +type Tait1<T: Iterator<Item: Copy, Item: Send>> = T; +type Tait2<T: Iterator<Item: Copy, Item: Copy>> = T; +type Tait3<T: Iterator<Item: 'static, Item: 'static>> = T; +type Taw1<T> +where + T: Iterator<Item: Copy, Item: Send>, += T; +type Taw2<T> +where + T: Iterator<Item: Copy, Item: Copy>, += T; +type Taw3<T> +where + T: Iterator<Item: 'static, Item: 'static>, += T; + +trait Tri1<T: Iterator<Item: Copy, Item: Send>> {} +trait Tri2<T: Iterator<Item: Copy, Item: Copy>> {} +trait Tri3<T: Iterator<Item: 'static, Item: 'static>> {} +trait Trs1: Iterator<Item: Copy, Item: Send> {} +trait Trs2: Iterator<Item: Copy, Item: Copy> {} +trait Trs3: Iterator<Item: 'static, Item: 'static> {} +trait Trw1<T> +where + T: Iterator<Item: Copy, Item: Send>, +{ +} +trait Trw2<T> +where + T: Iterator<Item: Copy, Item: Copy>, +{ +} +trait Trw3<T> +where + T: Iterator<Item: 'static, Item: 'static>, +{ +} +trait Trsw1 +where + Self: Iterator<Item: Copy, Item: Send>, +{ +} +trait Trsw2 +where + Self: Iterator<Item: Copy, Item: Copy>, +{ +} +trait Trsw3 +where + Self: Iterator<Item: 'static, Item: 'static>, +{ +} +trait Tra1 { + type A: Iterator<Item: Copy, Item: Send>; +} +trait Tra2 { + type A: Iterator<Item: Copy, Item: Copy>; +} +trait Tra3 { + type A: Iterator<Item: 'static, Item: 'static>; +} + +trait Trait { + type Gat<T>; + + const ASSOC: i32; + + fn foo() -> impl Sized; +} + +impl Trait for () { + type Gat<T> = (); + + const ASSOC: i32 = 3; + + fn foo() {} +} + +trait Subtrait: Trait<Gat<u32> = u32, Gat<u64> = u64> {} + +fn f<T: Trait<Gat<i32> = (), Gat<i64> = ()>>() { + let _: T::Gat<i32> = (); + let _: T::Gat<i64> = (); +} + +fn g<T: Trait<Gat<i32> = (), Gat<i64> = &'static str>>() { + let _: T::Gat<i32> = (); + let _: T::Gat<i64> = ""; +} + +fn uncallable(_: impl Iterator<Item = i32, Item = u32>) {} + +fn callable(_: impl Iterator<Item = i32, Item = i32>) {} + +fn uncallable_const(_: impl Trait<ASSOC = 3, ASSOC = 4>) {} + +fn callable_const(_: impl Trait<ASSOC = 3, ASSOC = 3>) {} + +fn uncallable_rtn(_: impl Trait<foo(..): Trait<ASSOC = 3>, foo(..): Trait<ASSOC = 4>>) {} + +fn callable_rtn(_: impl Trait<foo(..): Send, foo(..): Send, foo(..): Eq>) {} + +trait Trait2 { + const ASSOC: u32; +} + +trait Trait3 { + fn foo() -> impl Iterator<Item = i32, Item = u32>; +} + +fn main() { + callable(iter::empty::<i32>()); + callable_const(()); + callable_rtn(()); +} diff --git a/tests/ui/associated-type-bounds/duplicate.rs b/tests/ui/associated-type-bounds/duplicate.rs deleted file mode 100644 index e9d94787e98..00000000000 --- a/tests/ui/associated-type-bounds/duplicate.rs +++ /dev/null @@ -1,278 +0,0 @@ -#![feature(type_alias_impl_trait)] - -use std::iter; -use std::mem::ManuallyDrop; - -struct SI1<T: Iterator<Item: Copy, Item: Send>> { - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - f: T, -} -struct SI2<T: Iterator<Item: Copy, Item: Copy>> { - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - f: T, -} -struct SI3<T: Iterator<Item: 'static, Item: 'static>> { - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - f: T, -} -struct SW1<T> -where - T: Iterator<Item: Copy, Item: Send>, - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -{ - f: T, -} -struct SW2<T> -where - T: Iterator<Item: Copy, Item: Copy>, - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -{ - f: T, -} -struct SW3<T> -where - T: Iterator<Item: 'static, Item: 'static>, - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -{ - f: T, -} - -enum EI1<T: Iterator<Item: Copy, Item: Send>> { - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - V(T), -} -enum EI2<T: Iterator<Item: Copy, Item: Copy>> { - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - V(T), -} -enum EI3<T: Iterator<Item: 'static, Item: 'static>> { - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - V(T), -} -enum EW1<T> -where - T: Iterator<Item: Copy, Item: Send>, - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -{ - V(T), -} -enum EW2<T> -where - T: Iterator<Item: Copy, Item: Copy>, - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -{ - V(T), -} -enum EW3<T> -where - T: Iterator<Item: 'static, Item: 'static>, - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -{ - V(T), -} - -union UI1<T: Iterator<Item: Copy, Item: Send>> { - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - f: ManuallyDrop<T>, -} -union UI2<T: Iterator<Item: Copy, Item: Copy>> { - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - f: ManuallyDrop<T>, -} -union UI3<T: Iterator<Item: 'static, Item: 'static>> { - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - f: ManuallyDrop<T>, -} -union UW1<T> -where - T: Iterator<Item: Copy, Item: Send>, - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -{ - f: ManuallyDrop<T>, -} -union UW2<T> -where - T: Iterator<Item: Copy, Item: Copy>, - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -{ - f: ManuallyDrop<T>, -} -union UW3<T> -where - T: Iterator<Item: 'static, Item: 'static>, - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -{ - f: ManuallyDrop<T>, -} - -fn FI1<T: Iterator<Item: Copy, Item: Send>>() {} -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -fn FI2<T: Iterator<Item: Copy, Item: Copy>>() {} -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -fn FI3<T: Iterator<Item: 'static, Item: 'static>>() {} -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -fn FW1<T>() -where - T: Iterator<Item: Copy, Item: Send>, - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -{ -} -fn FW2<T>() -where - T: Iterator<Item: Copy, Item: Copy>, - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -{ -} -fn FW3<T>() -where - T: Iterator<Item: 'static, Item: 'static>, - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -{ -} - -fn FRPIT1() -> impl Iterator<Item: Copy, Item: Send> { - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - //~| ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - iter::empty() - //~^ ERROR type annotations needed -} -fn FRPIT2() -> impl Iterator<Item: Copy, Item: Copy> { - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - //~| ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - iter::empty() - //~^ ERROR type annotations needed -} -fn FRPIT3() -> impl Iterator<Item: 'static, Item: 'static> { - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - //~| ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - iter::empty() - //~^ ERROR type annotations needed -} -fn FAPIT1(_: impl Iterator<Item: Copy, Item: Send>) {} -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -fn FAPIT2(_: impl Iterator<Item: Copy, Item: Copy>) {} -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -fn FAPIT3(_: impl Iterator<Item: 'static, Item: 'static>) {} -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - -type TAI1<T: Iterator<Item: Copy, Item: Send>> = T; -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -type TAI2<T: Iterator<Item: Copy, Item: Copy>> = T; -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -type TAI3<T: Iterator<Item: 'static, Item: 'static>> = T; -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -type TAW1<T> -where - T: Iterator<Item: Copy, Item: Send>, -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -= T; -type TAW2<T> -where - T: Iterator<Item: Copy, Item: Copy>, -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -= T; -type TAW3<T> -where - T: Iterator<Item: 'static, Item: 'static>, -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -= T; - -type ETAI1<T: Iterator<Item: Copy, Item: Send>> = impl Copy; -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -//~| ERROR unconstrained opaque type -type ETAI2<T: Iterator<Item: Copy, Item: Copy>> = impl Copy; -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -//~| ERROR unconstrained opaque type -type ETAI3<T: Iterator<Item: 'static, Item: 'static>> = impl Copy; -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -//~| ERROR unconstrained opaque type -type ETAI4 = impl Iterator<Item: Copy, Item: Send>; -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -//~| ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -//~| ERROR unconstrained opaque type -type ETAI5 = impl Iterator<Item: Copy, Item: Copy>; -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -//~| ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -//~| ERROR unconstrained opaque type -type ETAI6 = impl Iterator<Item: 'static, Item: 'static>; -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -//~| ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -//~| ERROR unconstrained opaque type - -trait TRI1<T: Iterator<Item: Copy, Item: Send>> {} -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -trait TRI2<T: Iterator<Item: Copy, Item: Copy>> {} -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -trait TRI3<T: Iterator<Item: 'static, Item: 'static>> {} -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -trait TRS1: Iterator<Item: Copy, Item: Send> {} -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -//~| ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -//~| ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -trait TRS2: Iterator<Item: Copy, Item: Copy> {} -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -//~| ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -//~| ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -trait TRS3: Iterator<Item: 'static, Item: 'static> {} -//~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -//~| ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -//~| ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -trait TRW1<T> -where - T: Iterator<Item: Copy, Item: Send>, - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -{ -} -trait TRW2<T> -where - T: Iterator<Item: Copy, Item: Copy>, - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -{ -} -trait TRW3<T> -where - T: Iterator<Item: 'static, Item: 'static>, - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -{ -} -trait TRSW1 -where - Self: Iterator<Item: Copy, Item: Send>, - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - //~| ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - //~| ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -{ -} -trait TRSW2 -where - Self: Iterator<Item: Copy, Item: Copy>, - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - //~| ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - //~| ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -{ -} -trait TRSW3 -where - Self: Iterator<Item: 'static, Item: 'static>, - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - //~| ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - //~| ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -{ -} -trait TRA1 { - type A: Iterator<Item: Copy, Item: Send>; - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - //~| ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -} -trait TRA2 { - type A: Iterator<Item: Copy, Item: Copy>; - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - //~| ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -} -trait TRA3 { - type A: Iterator<Item: 'static, Item: 'static>; - //~^ ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] - //~| ERROR the value of the associated type `Item` in trait `Iterator` is already specified [E0719] -} - -fn main() {} diff --git a/tests/ui/associated-type-bounds/duplicate.stderr b/tests/ui/associated-type-bounds/duplicate.stderr deleted file mode 100644 index 68fbb345f6f..00000000000 --- a/tests/ui/associated-type-bounds/duplicate.stderr +++ /dev/null @@ -1,751 +0,0 @@ -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:6:36 - | -LL | struct SI1<T: Iterator<Item: Copy, Item: Send>> { - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:10:36 - | -LL | struct SI2<T: Iterator<Item: Copy, Item: Copy>> { - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:14:39 - | -LL | struct SI3<T: Iterator<Item: 'static, Item: 'static>> { - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:20:29 - | -LL | T: Iterator<Item: Copy, Item: Send>, - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:27:29 - | -LL | T: Iterator<Item: Copy, Item: Copy>, - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:34:32 - | -LL | T: Iterator<Item: 'static, Item: 'static>, - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:40:34 - | -LL | enum EI1<T: Iterator<Item: Copy, Item: Send>> { - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:44:34 - | -LL | enum EI2<T: Iterator<Item: Copy, Item: Copy>> { - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:48:37 - | -LL | enum EI3<T: Iterator<Item: 'static, Item: 'static>> { - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:54:29 - | -LL | T: Iterator<Item: Copy, Item: Send>, - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:61:29 - | -LL | T: Iterator<Item: Copy, Item: Copy>, - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:68:32 - | -LL | T: Iterator<Item: 'static, Item: 'static>, - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:74:35 - | -LL | union UI1<T: Iterator<Item: Copy, Item: Send>> { - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:78:35 - | -LL | union UI2<T: Iterator<Item: Copy, Item: Copy>> { - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:82:38 - | -LL | union UI3<T: Iterator<Item: 'static, Item: 'static>> { - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:88:29 - | -LL | T: Iterator<Item: Copy, Item: Send>, - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:95:29 - | -LL | T: Iterator<Item: Copy, Item: Copy>, - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:102:32 - | -LL | T: Iterator<Item: 'static, Item: 'static>, - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:108:32 - | -LL | fn FI1<T: Iterator<Item: Copy, Item: Send>>() {} - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:110:32 - | -LL | fn FI2<T: Iterator<Item: Copy, Item: Copy>>() {} - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:112:35 - | -LL | fn FI3<T: Iterator<Item: 'static, Item: 'static>>() {} - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:116:29 - | -LL | T: Iterator<Item: Copy, Item: Send>, - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:122:29 - | -LL | T: Iterator<Item: Copy, Item: Copy>, - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:128:32 - | -LL | T: Iterator<Item: 'static, Item: 'static>, - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:133:42 - | -LL | fn FRPIT1() -> impl Iterator<Item: Copy, Item: Send> { - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:139:42 - | -LL | fn FRPIT2() -> impl Iterator<Item: Copy, Item: Copy> { - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:145:45 - | -LL | fn FRPIT3() -> impl Iterator<Item: 'static, Item: 'static> { - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:151:40 - | -LL | fn FAPIT1(_: impl Iterator<Item: Copy, Item: Send>) {} - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:153:40 - | -LL | fn FAPIT2(_: impl Iterator<Item: Copy, Item: Copy>) {} - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:155:43 - | -LL | fn FAPIT3(_: impl Iterator<Item: 'static, Item: 'static>) {} - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:158:35 - | -LL | type TAI1<T: Iterator<Item: Copy, Item: Send>> = T; - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:160:35 - | -LL | type TAI2<T: Iterator<Item: Copy, Item: Copy>> = T; - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:162:38 - | -LL | type TAI3<T: Iterator<Item: 'static, Item: 'static>> = T; - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:166:29 - | -LL | T: Iterator<Item: Copy, Item: Send>, - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:171:29 - | -LL | T: Iterator<Item: Copy, Item: Copy>, - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:176:32 - | -LL | T: Iterator<Item: 'static, Item: 'static>, - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:180:36 - | -LL | type ETAI1<T: Iterator<Item: Copy, Item: Send>> = impl Copy; - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:183:36 - | -LL | type ETAI2<T: Iterator<Item: Copy, Item: Copy>> = impl Copy; - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:186:39 - | -LL | type ETAI3<T: Iterator<Item: 'static, Item: 'static>> = impl Copy; - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:202:36 - | -LL | trait TRI1<T: Iterator<Item: Copy, Item: Send>> {} - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:204:36 - | -LL | trait TRI2<T: Iterator<Item: Copy, Item: Copy>> {} - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:206:39 - | -LL | trait TRI3<T: Iterator<Item: 'static, Item: 'static>> {} - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:208:34 - | -LL | trait TRS1: Iterator<Item: Copy, Item: Send> {} - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:208:34 - | -LL | trait TRS1: Iterator<Item: Copy, Item: Send> {} - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:208:34 - | -LL | trait TRS1: Iterator<Item: Copy, Item: Send> {} - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:212:34 - | -LL | trait TRS2: Iterator<Item: Copy, Item: Copy> {} - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:212:34 - | -LL | trait TRS2: Iterator<Item: Copy, Item: Copy> {} - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:212:34 - | -LL | trait TRS2: Iterator<Item: Copy, Item: Copy> {} - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:216:37 - | -LL | trait TRS3: Iterator<Item: 'static, Item: 'static> {} - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:216:37 - | -LL | trait TRS3: Iterator<Item: 'static, Item: 'static> {} - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:216:37 - | -LL | trait TRS3: Iterator<Item: 'static, Item: 'static> {} - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:222:29 - | -LL | T: Iterator<Item: Copy, Item: Send>, - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:228:29 - | -LL | T: Iterator<Item: Copy, Item: Copy>, - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:234:32 - | -LL | T: Iterator<Item: 'static, Item: 'static>, - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:240:32 - | -LL | Self: Iterator<Item: Copy, Item: Send>, - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:240:32 - | -LL | Self: Iterator<Item: Copy, Item: Send>, - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:240:32 - | -LL | Self: Iterator<Item: Copy, Item: Send>, - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:248:32 - | -LL | Self: Iterator<Item: Copy, Item: Copy>, - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:248:32 - | -LL | Self: Iterator<Item: Copy, Item: Copy>, - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:248:32 - | -LL | Self: Iterator<Item: Copy, Item: Copy>, - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:256:35 - | -LL | Self: Iterator<Item: 'static, Item: 'static>, - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:256:35 - | -LL | Self: Iterator<Item: 'static, Item: 'static>, - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:256:35 - | -LL | Self: Iterator<Item: 'static, Item: 'static>, - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:263:34 - | -LL | type A: Iterator<Item: Copy, Item: Send>; - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:263:34 - | -LL | type A: Iterator<Item: Copy, Item: Send>; - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:268:34 - | -LL | type A: Iterator<Item: Copy, Item: Copy>; - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:268:34 - | -LL | type A: Iterator<Item: Copy, Item: Copy>; - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:273:37 - | -LL | type A: Iterator<Item: 'static, Item: 'static>; - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:273:37 - | -LL | type A: Iterator<Item: 'static, Item: 'static>; - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:133:42 - | -LL | fn FRPIT1() -> impl Iterator<Item: Copy, Item: Send> { - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error[E0282]: type annotations needed - --> $DIR/duplicate.rs:136:5 - | -LL | iter::empty() - | ^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the function `empty` - | -help: consider specifying the generic argument - | -LL | iter::empty::<T>() - | +++++ - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:139:42 - | -LL | fn FRPIT2() -> impl Iterator<Item: Copy, Item: Copy> { - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error[E0282]: type annotations needed - --> $DIR/duplicate.rs:142:5 - | -LL | iter::empty() - | ^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the function `empty` - | -help: consider specifying the generic argument - | -LL | iter::empty::<T>() - | +++++ - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:145:45 - | -LL | fn FRPIT3() -> impl Iterator<Item: 'static, Item: 'static> { - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error[E0282]: type annotations needed - --> $DIR/duplicate.rs:148:5 - | -LL | iter::empty() - | ^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the function `empty` - | -help: consider specifying the generic argument - | -LL | iter::empty::<T>() - | +++++ - -error: unconstrained opaque type - --> $DIR/duplicate.rs:180:51 - | -LL | type ETAI1<T: Iterator<Item: Copy, Item: Send>> = impl Copy; - | ^^^^^^^^^ - | - = note: `ETAI1` must be used in combination with a concrete type within the same crate - -error: unconstrained opaque type - --> $DIR/duplicate.rs:183:51 - | -LL | type ETAI2<T: Iterator<Item: Copy, Item: Copy>> = impl Copy; - | ^^^^^^^^^ - | - = note: `ETAI2` must be used in combination with a concrete type within the same crate - -error: unconstrained opaque type - --> $DIR/duplicate.rs:186:57 - | -LL | type ETAI3<T: Iterator<Item: 'static, Item: 'static>> = impl Copy; - | ^^^^^^^^^ - | - = note: `ETAI3` must be used in combination with a concrete type within the same crate - -error: unconstrained opaque type - --> $DIR/duplicate.rs:189:14 - | -LL | type ETAI4 = impl Iterator<Item: Copy, Item: Send>; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - | - = note: `ETAI4` must be used in combination with a concrete type within the same crate - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:189:40 - | -LL | type ETAI4 = impl Iterator<Item: Copy, Item: Send>; - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:189:40 - | -LL | type ETAI4 = impl Iterator<Item: Copy, Item: Send>; - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error: unconstrained opaque type - --> $DIR/duplicate.rs:193:14 - | -LL | type ETAI5 = impl Iterator<Item: Copy, Item: Copy>; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - | - = note: `ETAI5` must be used in combination with a concrete type within the same crate - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:193:40 - | -LL | type ETAI5 = impl Iterator<Item: Copy, Item: Copy>; - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:193:40 - | -LL | type ETAI5 = impl Iterator<Item: Copy, Item: Copy>; - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error: unconstrained opaque type - --> $DIR/duplicate.rs:197:14 - | -LL | type ETAI6 = impl Iterator<Item: 'static, Item: 'static>; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - | - = note: `ETAI6` must be used in combination with a concrete type within the same crate - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:197:43 - | -LL | type ETAI6 = impl Iterator<Item: 'static, Item: 'static>; - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/duplicate.rs:197:43 - | -LL | type ETAI6 = impl Iterator<Item: 'static, Item: 'static>; - | ------------- ^^^^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error: aborting due to 87 previous errors - -Some errors have detailed explanations: E0282, E0719. -For more information about an error, try `rustc --explain E0282`. diff --git a/tests/ui/associated-types/associated-types-overridden-binding-2.stderr b/tests/ui/associated-types/associated-types-overridden-binding-2.stderr index 71a4a2610aa..e96a2446b6c 100644 --- a/tests/ui/associated-types/associated-types-overridden-binding-2.stderr +++ b/tests/ui/associated-types/associated-types-overridden-binding-2.stderr @@ -1,4 +1,4 @@ -error: conflicting associated type bounds for `Item` when expanding trait alias +error: conflicting associated type bounds for `Item` --> $DIR/associated-types-overridden-binding-2.rs:6:13 | LL | trait I32Iterator = Iterator<Item = i32>; diff --git a/tests/ui/associated-types/associated-types-overridden-binding.stderr b/tests/ui/associated-types/associated-types-overridden-binding.stderr index 3b20015dfca..08ab9b63ee9 100644 --- a/tests/ui/associated-types/associated-types-overridden-binding.stderr +++ b/tests/ui/associated-types/associated-types-overridden-binding.stderr @@ -22,7 +22,7 @@ note: required by a bound in `I32Iterator` LL | trait I32Iterator = Iterator<Item = i32>; | ^^^^^^^^^^ required by this bound in `I32Iterator` -error: conflicting associated type bounds for `Item` when expanding trait alias +error: conflicting associated type bounds for `Item` --> $DIR/associated-types-overridden-binding.rs:10:13 | LL | trait I32Iterator = Iterator<Item = i32>; diff --git a/tests/ui/error-codes/E0719.rs b/tests/ui/error-codes/E0719.rs index 0ea6d19000b..d7b4b876d1b 100644 --- a/tests/ui/error-codes/E0719.rs +++ b/tests/ui/error-codes/E0719.rs @@ -1,8 +1,3 @@ -trait Foo: Iterator<Item = i32, Item = i32> {} -//~^ ERROR is already specified -//~| ERROR is already specified -//~| ERROR is already specified - type Unit = (); fn test() -> Box<dyn Iterator<Item = (), Item = Unit>> { diff --git a/tests/ui/error-codes/E0719.stderr b/tests/ui/error-codes/E0719.stderr index 7e8329db1f4..f4817568924 100644 --- a/tests/ui/error-codes/E0719.stderr +++ b/tests/ui/error-codes/E0719.stderr @@ -1,33 +1,5 @@ error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/E0719.rs:1:33 - | -LL | trait Foo: Iterator<Item = i32, Item = i32> {} - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/E0719.rs:1:33 - | -LL | trait Foo: Iterator<Item = i32, Item = i32> {} - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/E0719.rs:1:33 - | -LL | trait Foo: Iterator<Item = i32, Item = i32> {} - | ---------- ^^^^^^^^^^ re-bound here - | | - | `Item` bound here first - | - = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` - -error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/E0719.rs:8:42 + --> $DIR/E0719.rs:3:42 | LL | fn test() -> Box<dyn Iterator<Item = (), Item = Unit>> { | --------- ^^^^^^^^^^^ re-bound here @@ -35,13 +7,13 @@ LL | fn test() -> Box<dyn Iterator<Item = (), Item = Unit>> { | `Item` bound here first error[E0719]: the value of the associated type `Item` in trait `Iterator` is already specified - --> $DIR/E0719.rs:14:38 + --> $DIR/E0719.rs:9:38 | LL | let _: &dyn Iterator<Item = i32, Item = i32>; | ---------- ^^^^^^^^^^ re-bound here | | | `Item` bound here first -error: aborting due to 5 previous errors +error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0719`. |