diff options
59 files changed, 470 insertions, 388 deletions
diff --git a/compiler/rustc_borrowck/src/consumers.rs b/compiler/rustc_borrowck/src/consumers.rs index 31307ef1410..64726eacca7 100644 --- a/compiler/rustc_borrowck/src/consumers.rs +++ b/compiler/rustc_borrowck/src/consumers.rs @@ -4,7 +4,6 @@ use rustc_hir::def_id::LocalDefId; use rustc_index::{IndexSlice, IndexVec}; use rustc_infer::infer::TyCtxtInferExt; use rustc_middle::mir::{Body, Promoted}; -use rustc_middle::traits::DefiningAnchor; use rustc_middle::ty::TyCtxt; use std::rc::Rc; @@ -106,7 +105,7 @@ pub fn get_body_with_borrowck_facts( options: ConsumerOptions, ) -> BodyWithBorrowckFacts<'_> { let (input_body, promoted) = tcx.mir_promoted(def); - let infcx = tcx.infer_ctxt().with_opaque_type_inference(DefiningAnchor::bind(tcx, def)).build(); + let infcx = tcx.infer_ctxt().with_opaque_type_inference(def).build(); let input_body: &Body<'_> = &input_body.borrow(); let promoted: &IndexSlice<_, _> = &promoted.borrow(); *super::do_mir_borrowck(&infcx, input_body, promoted, Some(options)).1.unwrap() diff --git a/compiler/rustc_borrowck/src/lib.rs b/compiler/rustc_borrowck/src/lib.rs index 9c23c2f9e01..7fbf4c47ec8 100644 --- a/compiler/rustc_borrowck/src/lib.rs +++ b/compiler/rustc_borrowck/src/lib.rs @@ -32,7 +32,6 @@ use rustc_infer::infer::{ use rustc_middle::mir::tcx::PlaceTy; use rustc_middle::mir::*; use rustc_middle::query::Providers; -use rustc_middle::traits::DefiningAnchor; use rustc_middle::ty::{self, ParamEnv, RegionVid, TyCtxt}; use rustc_session::lint::builtin::UNUSED_MUT; use rustc_span::{Span, Symbol}; @@ -126,7 +125,7 @@ fn mir_borrowck(tcx: TyCtxt<'_>, def: LocalDefId) -> &BorrowCheckResult<'_> { return tcx.arena.alloc(result); } - let infcx = tcx.infer_ctxt().with_opaque_type_inference(DefiningAnchor::bind(tcx, def)).build(); + let infcx = tcx.infer_ctxt().with_opaque_type_inference(def).build(); let promoted: &IndexSlice<_, _> = &promoted.borrow(); let opt_closure_req = do_mir_borrowck(&infcx, input_body, promoted, None).0; debug!("mir_borrowck done"); diff --git a/compiler/rustc_borrowck/src/region_infer/opaque_types.rs b/compiler/rustc_borrowck/src/region_infer/opaque_types.rs index 63b80445817..9f0e54febe4 100644 --- a/compiler/rustc_borrowck/src/region_infer/opaque_types.rs +++ b/compiler/rustc_borrowck/src/region_infer/opaque_types.rs @@ -7,7 +7,6 @@ use rustc_infer::infer::TyCtxtInferExt as _; use rustc_infer::infer::{InferCtxt, NllRegionVariableOrigin}; use rustc_infer::traits::{Obligation, ObligationCause}; use rustc_macros::extension; -use rustc_middle::traits::DefiningAnchor; use rustc_middle::ty::visit::TypeVisitableExt; use rustc_middle::ty::{self, OpaqueHiddenType, OpaqueTypeKey, Ty, TyCtxt, TypeFoldable}; use rustc_middle::ty::{GenericArgKind, GenericArgs}; @@ -133,6 +132,18 @@ impl<'tcx> RegionInferenceContext<'tcx> { let ty = infcx.infer_opaque_definition_from_instantiation(opaque_type_key, concrete_type); + + // Sometimes, when the hidden type is an inference variable, it can happen that + // the hidden type becomes the opaque type itself. In this case, this was an opaque + // usage of the opaque type and we can ignore it. This check is mirrored in typeck's + // writeback. + // FIXME(-Znext-solver): This should be unnecessary with the new solver. + if let ty::Alias(ty::Opaque, alias_ty) = ty.kind() + && alias_ty.def_id == opaque_type_key.def_id.to_def_id() + && alias_ty.args == opaque_type_key.args + { + continue; + } // Sometimes two opaque types are the same only after we remap the generic parameters // back to the opaque type definition. E.g. we may have `OpaqueType<X, Y>` mapped to `(X, Y)` // and `OpaqueType<Y, X>` mapped to `(Y, X)`, and those are the same, but we only know that @@ -321,13 +332,13 @@ fn check_opaque_type_well_formed<'tcx>( parent_def_id = tcx.local_parent(parent_def_id); } - // FIXME(-Znext-solver): We probably should use `DefiningAnchor::Bind(&[])` + // FIXME(-Znext-solver): We probably should use `&[]` instead of // and prepopulate this `InferCtxt` with known opaque values, rather than - // using the `Bind` anchor here. For now it's fine. + // allowing opaque types to be defined and checking them after the fact. let infcx = tcx .infer_ctxt() .with_next_trait_solver(next_trait_solver) - .with_opaque_type_inference(DefiningAnchor::bind(tcx, parent_def_id)) + .with_opaque_type_inference(parent_def_id) .build(); let ocx = ObligationCtxt::new(&infcx); let identity_args = GenericArgs::identity_for_item(tcx, def_id); diff --git a/compiler/rustc_borrowck/src/type_check/canonical.rs b/compiler/rustc_borrowck/src/type_check/canonical.rs index f28b786e4f7..a950f10787b 100644 --- a/compiler/rustc_borrowck/src/type_check/canonical.rs +++ b/compiler/rustc_borrowck/src/type_check/canonical.rs @@ -39,6 +39,12 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> { let TypeOpOutput { output, constraints, error_info } = op.fully_perform(self.infcx, locations.span(self.body))?; + if cfg!(debug_assertions) { + let data = self.infcx.take_and_reset_region_constraints(); + if !data.is_empty() { + panic!("leftover region constraints: {data:#?}"); + } + } debug!(?output, ?constraints); diff --git a/compiler/rustc_hir_analysis/src/check/check.rs b/compiler/rustc_hir_analysis/src/check/check.rs index 739a7086992..8d4ae10d4bf 100644 --- a/compiler/rustc_hir_analysis/src/check/check.rs +++ b/compiler/rustc_hir_analysis/src/check/check.rs @@ -13,7 +13,7 @@ use rustc_infer::infer::{RegionVariableOrigin, TyCtxtInferExt}; use rustc_infer::traits::{Obligation, TraitEngineExt as _}; use rustc_lint_defs::builtin::REPR_TRANSPARENT_EXTERNAL_PRIVATE_FIELDS; use rustc_middle::middle::stability::EvalResult; -use rustc_middle::traits::{DefiningAnchor, ObligationCauseCode}; +use rustc_middle::traits::ObligationCauseCode; use rustc_middle::ty::fold::BottomUpFolder; use rustc_middle::ty::layout::{LayoutError, MAX_SIMD_LANES}; use rustc_middle::ty::util::{Discr, InspectCoroutineFields, IntTypeExt}; @@ -345,10 +345,7 @@ fn check_opaque_meets_bounds<'tcx>( }; let param_env = tcx.param_env(defining_use_anchor); - let infcx = tcx - .infer_ctxt() - .with_opaque_type_inference(DefiningAnchor::bind(tcx, defining_use_anchor)) - .build(); + let infcx = tcx.infer_ctxt().with_opaque_type_inference(defining_use_anchor).build(); let ocx = ObligationCtxt::new(&infcx); let args = match *origin { @@ -1567,7 +1564,7 @@ pub(super) fn check_coroutine_obligations( .ignoring_regions() // Bind opaque types to type checking root, as they should have been checked by borrowck, // but may show up in some cases, like when (root) obligations are stalled in the new solver. - .with_opaque_type_inference(DefiningAnchor::bind(tcx, typeck.hir_owner.def_id)) + .with_opaque_type_inference(typeck.hir_owner.def_id) .build(); let mut fulfillment_cx = <dyn TraitEngine<'_>>::new(&infcx); diff --git a/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs b/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs index 85d04f7d1c4..f1e82543a99 100644 --- a/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs +++ b/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs @@ -730,8 +730,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { for ty in ret_ty.walk() { if let ty::GenericArgKind::Type(ty) = ty.unpack() && let ty::Alias(ty::Opaque, ty::AliasTy { def_id, .. }) = *ty.kind() - && let Some(def_id) = def_id.as_local() - && self.opaque_type_origin(def_id).is_some() + && self.can_define_opaque_ty(def_id) { return None; } diff --git a/compiler/rustc_hir_typeck/src/typeck_root_ctxt.rs b/compiler/rustc_hir_typeck/src/typeck_root_ctxt.rs index 88777bf5b02..694ddd0e3e8 100644 --- a/compiler/rustc_hir_typeck/src/typeck_root_ctxt.rs +++ b/compiler/rustc_hir_typeck/src/typeck_root_ctxt.rs @@ -5,7 +5,6 @@ use rustc_hir as hir; use rustc_hir::def_id::LocalDefId; use rustc_hir::HirIdMap; use rustc_infer::infer::{InferCtxt, InferOk, TyCtxtInferExt}; -use rustc_middle::traits::DefiningAnchor; use rustc_middle::ty::visit::TypeVisitableExt; use rustc_middle::ty::{self, Ty, TyCtxt}; use rustc_span::def_id::LocalDefIdMap; @@ -78,11 +77,7 @@ impl<'tcx> TypeckRootCtxt<'tcx> { pub fn new(tcx: TyCtxt<'tcx>, def_id: LocalDefId) -> Self { let hir_owner = tcx.local_def_id_to_hir_id(def_id).owner; - let infcx = tcx - .infer_ctxt() - .ignoring_regions() - .with_opaque_type_inference(DefiningAnchor::bind(tcx, def_id)) - .build(); + let infcx = tcx.infer_ctxt().ignoring_regions().with_opaque_type_inference(def_id).build(); let typeck_results = RefCell::new(ty::TypeckResults::new(hir_owner)); TypeckRootCtxt { diff --git a/compiler/rustc_infer/src/infer/at.rs b/compiler/rustc_infer/src/infer/at.rs index 94088216c02..f2222eec76a 100644 --- a/compiler/rustc_infer/src/infer/at.rs +++ b/compiler/rustc_infer/src/infer/at.rs @@ -75,7 +75,7 @@ impl<'tcx> InferCtxt<'tcx> { pub fn fork_with_intercrate(&self, intercrate: bool) -> Self { Self { tcx: self.tcx, - defining_use_anchor: self.defining_use_anchor, + defining_opaque_types: self.defining_opaque_types, considering_regions: self.considering_regions, skip_leak_check: self.skip_leak_check, inner: self.inner.clone(), diff --git a/compiler/rustc_infer/src/infer/canonical/canonicalizer.rs b/compiler/rustc_infer/src/infer/canonical/canonicalizer.rs index 6421a3f038c..825c3bf82fc 100644 --- a/compiler/rustc_infer/src/infer/canonical/canonicalizer.rs +++ b/compiler/rustc_infer/src/infer/canonical/canonicalizer.rs @@ -42,7 +42,7 @@ impl<'tcx> InferCtxt<'tcx> { V: TypeFoldable<TyCtxt<'tcx>>, { let (param_env, value) = value.into_parts(); - let param_env = self.tcx.canonical_param_env_cache.get_or_insert( + let mut param_env = self.tcx.canonical_param_env_cache.get_or_insert( self.tcx, param_env, query_state, @@ -59,6 +59,8 @@ impl<'tcx> InferCtxt<'tcx> { }, ); + param_env.defining_opaque_types = self.defining_opaque_types; + Canonicalizer::canonicalize_with_base( param_env, value, @@ -541,6 +543,7 @@ impl<'cx, 'tcx> Canonicalizer<'cx, 'tcx> { max_universe: ty::UniverseIndex::ROOT, variables: List::empty(), value: (), + defining_opaque_types: infcx.map(|i| i.defining_opaque_types).unwrap_or_default(), }; Canonicalizer::canonicalize_with_base( base, @@ -610,7 +613,15 @@ impl<'cx, 'tcx> Canonicalizer<'cx, 'tcx> { .max() .unwrap_or(ty::UniverseIndex::ROOT); - Canonical { max_universe, variables: canonical_variables, value: (base.value, out_value) } + assert!( + !infcx.is_some_and(|infcx| infcx.defining_opaque_types != base.defining_opaque_types) + ); + Canonical { + max_universe, + variables: canonical_variables, + value: (base.value, out_value), + defining_opaque_types: base.defining_opaque_types, + } } /// Creates a canonical variable replacing `kind` from the input, diff --git a/compiler/rustc_infer/src/infer/canonical/query_response.rs b/compiler/rustc_infer/src/infer/canonical/query_response.rs index 9d2e065afa3..b948067e750 100644 --- a/compiler/rustc_infer/src/infer/canonical/query_response.rs +++ b/compiler/rustc_infer/src/infer/canonical/query_response.rs @@ -505,12 +505,9 @@ impl<'tcx> InferCtxt<'tcx> { let b = instantiate_value(self.tcx, &result_args, b); debug!(?a, ?b, "constrain opaque type"); // We use equate here instead of, for example, just registering the - // opaque type's hidden value directly, because we may be instantiating - // a query response that was canonicalized in an InferCtxt that had - // a different defining anchor. In that case, we may have inferred - // `NonLocalOpaque := LocalOpaque` but can only instantiate it in - // the other direction as `LocalOpaque := NonLocalOpaque`. Using eq - // here allows us to try both directions (in `InferCtxt::handle_opaque_type`). + // opaque type's hidden value directly, because the hidden type may have been an inference + // variable that got constrained to the opaque type itself. In that case we want to equate + // the generic args of the opaque with the generic params of its hidden type version. obligations.extend( self.at(cause, param_env) .eq( diff --git a/compiler/rustc_infer/src/infer/mod.rs b/compiler/rustc_infer/src/infer/mod.rs index 6e5ed0a31cb..0b8061104ab 100644 --- a/compiler/rustc_infer/src/infer/mod.rs +++ b/compiler/rustc_infer/src/infer/mod.rs @@ -34,7 +34,7 @@ use rustc_middle::infer::unify_key::{ConstVariableOrigin, ConstVariableOriginKin use rustc_middle::infer::unify_key::{ConstVidKey, EffectVidKey}; use rustc_middle::mir::interpret::{ErrorHandled, EvalToValTreeResult}; use rustc_middle::mir::ConstraintCategory; -use rustc_middle::traits::{select, DefiningAnchor}; +use rustc_middle::traits::select; use rustc_middle::ty::error::{ExpectedFound, TypeError}; use rustc_middle::ty::fold::BoundVarReplacerDelegate; use rustc_middle::ty::fold::{TypeFoldable, TypeFolder, TypeSuperFoldable}; @@ -243,18 +243,8 @@ impl<'tcx> InferCtxtInner<'tcx> { pub struct InferCtxt<'tcx> { pub tcx: TyCtxt<'tcx>, - /// The `DefId` of the item in whose context we are performing inference or typeck. - /// It is used to check whether an opaque type use is a defining use. - /// - /// If it is `DefiningAnchor::Bubble`, we can't resolve opaque types here and need to bubble up - /// the obligation. This frequently happens for - /// short lived InferCtxt within queries. The opaque type obligations are forwarded - /// to the outside until the end up in an `InferCtxt` for typeck or borrowck. - /// - /// Its default value is `DefiningAnchor::Bind(&[])`, which means no opaque types may be defined. - /// This way it is easier to catch errors that - /// might come up during inference or typeck. - pub defining_use_anchor: DefiningAnchor<'tcx>, + /// The `DefIds` of the opaque types that may have their hidden types constrained. + defining_opaque_types: &'tcx ty::List<LocalDefId>, /// Whether this inference context should care about region obligations in /// the root universe. Most notably, this is used during hir typeck as region @@ -401,6 +391,10 @@ impl<'tcx> ty::InferCtxtLike for InferCtxt<'tcx> { fn probe_ct_var(&self, vid: ConstVid) -> Option<ty::Const<'tcx>> { self.probe_const_var(vid).ok() } + + fn defining_opaque_types(&self) -> &'tcx ty::List<LocalDefId> { + self.defining_opaque_types + } } /// See the `error_reporting` module for more details. @@ -615,7 +609,7 @@ impl fmt::Display for FixupError { /// Used to configure inference contexts before their creation. pub struct InferCtxtBuilder<'tcx> { tcx: TyCtxt<'tcx>, - defining_use_anchor: DefiningAnchor<'tcx>, + defining_opaque_types: &'tcx ty::List<LocalDefId>, considering_regions: bool, skip_leak_check: bool, /// Whether we are in coherence mode. @@ -630,7 +624,7 @@ impl<'tcx> TyCtxt<'tcx> { fn infer_ctxt(self) -> InferCtxtBuilder<'tcx> { InferCtxtBuilder { tcx: self, - defining_use_anchor: DefiningAnchor::Bind(ty::List::empty()), + defining_opaque_types: ty::List::empty(), considering_regions: true, skip_leak_check: false, intercrate: false, @@ -646,8 +640,16 @@ impl<'tcx> InferCtxtBuilder<'tcx> { /// It is only meant to be called in two places, for typeck /// (via `Inherited::build`) and for the inference context used /// in mir borrowck. - pub fn with_opaque_type_inference(mut self, defining_use_anchor: DefiningAnchor<'tcx>) -> Self { - self.defining_use_anchor = defining_use_anchor; + pub fn with_opaque_type_inference(mut self, defining_anchor: LocalDefId) -> Self { + self.defining_opaque_types = self.tcx.opaque_types_defined_by(defining_anchor); + self + } + + pub fn with_defining_opaque_types( + mut self, + defining_opaque_types: &'tcx ty::List<LocalDefId>, + ) -> Self { + self.defining_opaque_types = defining_opaque_types; self } @@ -679,14 +681,14 @@ impl<'tcx> InferCtxtBuilder<'tcx> { /// the bound values in `C` to their instantiated values in `V` /// (in other words, `S(C) = V`). pub fn build_with_canonical<T>( - &mut self, + self, span: Span, canonical: &Canonical<'tcx, T>, ) -> (InferCtxt<'tcx>, T, CanonicalVarValues<'tcx>) where T: TypeFoldable<TyCtxt<'tcx>>, { - let infcx = self.build(); + let infcx = self.with_defining_opaque_types(canonical.defining_opaque_types).build(); let (value, args) = infcx.instantiate_canonical(span, canonical); (infcx, value, args) } @@ -694,7 +696,7 @@ impl<'tcx> InferCtxtBuilder<'tcx> { pub fn build(&mut self) -> InferCtxt<'tcx> { let InferCtxtBuilder { tcx, - defining_use_anchor, + defining_opaque_types, considering_regions, skip_leak_check, intercrate, @@ -702,7 +704,7 @@ impl<'tcx> InferCtxtBuilder<'tcx> { } = *self; InferCtxt { tcx, - defining_use_anchor, + defining_opaque_types, considering_regions, skip_leak_check, inner: RefCell::new(InferCtxtInner::new()), @@ -1230,6 +1232,12 @@ impl<'tcx> InferCtxt<'tcx> { self.inner.borrow().opaque_type_storage.opaque_types.clone() } + #[inline(always)] + pub fn can_define_opaque_ty(&self, id: impl Into<DefId>) -> bool { + let Some(id) = id.into().as_local() else { return false }; + self.defining_opaque_types.contains(&id) + } + pub fn ty_to_string(&self, t: Ty<'tcx>) -> String { self.resolve_vars_if_possible(t).to_string() } diff --git a/compiler/rustc_infer/src/infer/opaque_types/mod.rs b/compiler/rustc_infer/src/infer/opaque_types/mod.rs index 01430e830e5..d32515425c4 100644 --- a/compiler/rustc_infer/src/infer/opaque_types/mod.rs +++ b/compiler/rustc_infer/src/infer/opaque_types/mod.rs @@ -4,11 +4,10 @@ use crate::errors::OpaqueHiddenTypeDiag; use crate::infer::{InferCtxt, InferOk}; use crate::traits::{self, PredicateObligation}; use hir::def_id::{DefId, LocalDefId}; -use hir::OpaqueTyOrigin; use rustc_data_structures::fx::FxIndexMap; use rustc_data_structures::sync::Lrc; use rustc_hir as hir; -use rustc_middle::traits::{DefiningAnchor, ObligationCause}; +use rustc_middle::traits::ObligationCause; use rustc_middle::ty::error::{ExpectedFound, TypeError}; use rustc_middle::ty::fold::BottomUpFolder; use rustc_middle::ty::GenericArgKind; @@ -54,16 +53,13 @@ impl<'tcx> InferCtxt<'tcx> { } let mut obligations = vec![]; - let replace_opaque_type = |def_id: DefId| { - def_id.as_local().is_some_and(|def_id| self.opaque_type_origin(def_id).is_some()) - }; let value = value.fold_with(&mut BottomUpFolder { tcx: self.tcx, lt_op: |lt| lt, ct_op: |ct| ct, ty_op: |ty| match *ty.kind() { ty::Alias(ty::Opaque, ty::AliasTy { def_id, .. }) - if replace_opaque_type(def_id) && !ty.has_escaping_bound_vars() => + if self.can_define_opaque_ty(def_id) && !ty.has_escaping_bound_vars() => { let def_span = self.tcx.def_span(def_id); let span = if span.contains(def_span) { def_span } else { span }; @@ -106,56 +102,52 @@ impl<'tcx> InferCtxt<'tcx> { b, )); } - match self.defining_use_anchor { - DefiningAnchor::Bind(_) => { - // Check that this is `impl Trait` type is - // declared by `parent_def_id` -- i.e., one whose - // value we are inferring. At present, this is - // always true during the first phase of - // type-check, but not always true later on during - // NLL. Once we support named opaque types more fully, - // this same scenario will be able to arise during all phases. - // - // Here is an example using type alias `impl Trait` - // that indicates the distinction we are checking for: - // - // ```rust - // mod a { - // pub type Foo = impl Iterator; - // pub fn make_foo() -> Foo { .. } - // } - // - // mod b { - // fn foo() -> a::Foo { a::make_foo() } - // } - // ``` - // - // Here, the return type of `foo` references an - // `Opaque` indeed, but not one whose value is - // presently being inferred. You can get into a - // similar situation with closure return types - // today: - // - // ```rust - // fn foo() -> impl Iterator { .. } - // fn bar() { - // let x = || foo(); // returns the Opaque assoc with `foo` - // } - // ``` - if self.opaque_type_origin(def_id).is_none() { - return None; - } - } - DefiningAnchor::Bubble => {} + // Check that this is `impl Trait` type is + // declared by `parent_def_id` -- i.e., one whose + // value we are inferring. At present, this is + // always true during the first phase of + // type-check, but not always true later on during + // NLL. Once we support named opaque types more fully, + // this same scenario will be able to arise during all phases. + // + // Here is an example using type alias `impl Trait` + // that indicates the distinction we are checking for: + // + // ```rust + // mod a { + // pub type Foo = impl Iterator; + // pub fn make_foo() -> Foo { .. } + // } + // + // mod b { + // fn foo() -> a::Foo { a::make_foo() } + // } + // ``` + // + // Here, the return type of `foo` references an + // `Opaque` indeed, but not one whose value is + // presently being inferred. You can get into a + // similar situation with closure return types + // today: + // + // ```rust + // fn foo() -> impl Iterator { .. } + // fn bar() { + // let x = || foo(); // returns the Opaque assoc with `foo` + // } + // ``` + if !self.can_define_opaque_ty(def_id) { + return None; } + if let ty::Alias(ty::Opaque, ty::AliasTy { def_id: b_def_id, .. }) = *b.kind() { // We could accept this, but there are various ways to handle this situation, and we don't // want to make a decision on it right now. Likely this case is so super rare anyway, that // no one encounters it in practice. // It does occur however in `fn fut() -> impl Future<Output = i32> { async { 42 } }`, // where it is of no concern, so we only check for TAITs. - if let Some(OpaqueTyOrigin::TyAlias { .. }) = - b_def_id.as_local().and_then(|b_def_id| self.opaque_type_origin(b_def_id)) + if self.can_define_opaque_ty(b_def_id) + && self.tcx.is_type_alias_impl_trait(b_def_id) { self.tcx.dcx().emit_err(OpaqueHiddenTypeDiag { span: cause.span, @@ -367,20 +359,6 @@ impl<'tcx> InferCtxt<'tcx> { op: |r| self.member_constraint(opaque_type_key, span, concrete_ty, r, &choice_regions), }); } - - /// Returns the origin of the opaque type `def_id` if we're currently - /// in its defining scope. - #[instrument(skip(self), level = "trace", ret)] - pub fn opaque_type_origin(&self, def_id: LocalDefId) -> Option<OpaqueTyOrigin> { - let defined_opaque_types = match self.defining_use_anchor { - DefiningAnchor::Bubble => return None, - DefiningAnchor::Bind(bind) => bind, - }; - - let origin = self.tcx.opaque_type_origin(def_id); - - defined_opaque_types.contains(&def_id).then_some(origin) - } } /// Visitor that requires that (almost) all regions in the type visited outlive diff --git a/compiler/rustc_middle/src/infer/canonical.rs b/compiler/rustc_middle/src/infer/canonical.rs index acea89e4aab..62d7b7c28d1 100644 --- a/compiler/rustc_middle/src/infer/canonical.rs +++ b/compiler/rustc_middle/src/infer/canonical.rs @@ -153,11 +153,6 @@ pub struct QueryResponse<'tcx, R> { pub var_values: CanonicalVarValues<'tcx>, pub region_constraints: QueryRegionConstraints<'tcx>, pub certainty: Certainty, - /// List of opaque types which we tried to compare to another type. - /// Inside the query we don't know yet whether the opaque type actually - /// should get its hidden type inferred. So we bubble the opaque type - /// and the type it was compared against upwards and let the query caller - /// handle it. pub opaque_types: Vec<(ty::OpaqueTypeKey<'tcx>, Ty<'tcx>)>, pub value: R, } @@ -330,6 +325,7 @@ impl<'tcx> CanonicalParamEnvCache<'tcx> { max_universe: ty::UniverseIndex::ROOT, variables: List::empty(), value: key, + defining_opaque_types: ty::List::empty(), }; } @@ -340,6 +336,14 @@ impl<'tcx> CanonicalParamEnvCache<'tcx> { match self.map.borrow().entry(key) { Entry::Occupied(e) => { let (canonical, var_values) = e.get(); + if cfg!(debug_assertions) { + let mut state = state.clone(); + let rerun_canonical = canonicalize_op(tcx, key, &mut state); + assert_eq!(rerun_canonical, *canonical); + let OriginalQueryValues { var_values: rerun_var_values, universe_map } = state; + assert_eq!(universe_map.len(), 1); + assert_eq!(**var_values, *rerun_var_values); + } state.var_values.extend_from_slice(var_values); *canonical } diff --git a/compiler/rustc_middle/src/query/plumbing.rs b/compiler/rustc_middle/src/query/plumbing.rs index 8cb4ee7bd41..6555a687152 100644 --- a/compiler/rustc_middle/src/query/plumbing.rs +++ b/compiler/rustc_middle/src/query/plumbing.rs @@ -338,10 +338,11 @@ macro_rules! define_callbacks { pub type Storage<'tcx> = <$($K)* as keys::Key>::Cache<Erase<$V>>; - // Ensure that keys grow no larger than 64 bytes + // Ensure that keys grow no larger than 72 bytes by accident. + // Increase this limit if necessary, but do try to keep the size low if possible #[cfg(all(any(target_arch = "x86_64", target_arch="aarch64"), target_pointer_width = "64"))] const _: () = { - if mem::size_of::<Key<'static>>() > 64 { + if mem::size_of::<Key<'static>>() > 72 { panic!("{}", concat!( "the query `", stringify!($name), @@ -352,7 +353,8 @@ macro_rules! define_callbacks { } }; - // Ensure that values grow no larger than 64 bytes + // Ensure that values grow no larger than 64 bytes by accident. + // Increase this limit if necessary, but do try to keep the size low if possible #[cfg(all(any(target_arch = "x86_64", target_arch="aarch64"), target_pointer_width = "64"))] const _: () = { if mem::size_of::<Value<'static>>() > 64 { diff --git a/compiler/rustc_middle/src/traits/mod.rs b/compiler/rustc_middle/src/traits/mod.rs index ee816791919..d51e86c909c 100644 --- a/compiler/rustc_middle/src/traits/mod.rs +++ b/compiler/rustc_middle/src/traits/mod.rs @@ -12,8 +12,8 @@ pub mod util; use crate::infer::canonical::Canonical; use crate::mir::ConstraintCategory; use crate::ty::abstract_const::NotConstEvaluatable; +use crate::ty::GenericArgsRef; use crate::ty::{self, AdtKind, Ty}; -use crate::ty::{GenericArgsRef, TyCtxt}; use rustc_data_structures::sync::Lrc; use rustc_errors::{Applicability, Diag, EmissionGuarantee}; @@ -997,33 +997,3 @@ pub enum CodegenObligationError { Unimplemented, FulfillmentError, } - -/// Defines the treatment of opaque types in a given inference context. -/// -/// This affects both what opaques are allowed to be defined, but also whether -/// opaques are replaced with inference vars eagerly in the old solver (e.g. -/// in projection, and in the signature during function type-checking). -#[derive(Debug, PartialEq, Eq, Clone, Copy, Hash, HashStable, TypeFoldable, TypeVisitable)] -pub enum DefiningAnchor<'tcx> { - /// Define opaques which are in-scope of the current item being analyzed. - /// Also, eagerly replace these opaque types in `replace_opaque_types_with_inference_vars`. - /// - /// If the list is empty, do not allow any opaques to be defined. This is used to catch type mismatch - /// errors when handling opaque types, and also should be used when we would - /// otherwise reveal opaques (such as [`Reveal::All`] reveal mode). - Bind(&'tcx ty::List<LocalDefId>), - /// In contexts where we don't currently know what opaques are allowed to be - /// defined, such as (old solver) canonical queries, we will simply allow - /// opaques to be defined, but "bubble" them up in the canonical response or - /// otherwise treat them to be handled later. - /// - /// We do not eagerly replace opaque types in `replace_opaque_types_with_inference_vars`, - /// which may affect what predicates pass and fail in the old trait solver. - Bubble, -} - -impl<'tcx> DefiningAnchor<'tcx> { - pub fn bind(tcx: TyCtxt<'tcx>, item: LocalDefId) -> Self { - Self::Bind(tcx.opaque_types_defined_by(item)) - } -} diff --git a/compiler/rustc_middle/src/traits/solve.rs b/compiler/rustc_middle/src/traits/solve.rs index 6dcea2aaff1..13504c6ae93 100644 --- a/compiler/rustc_middle/src/traits/solve.rs +++ b/compiler/rustc_middle/src/traits/solve.rs @@ -4,7 +4,7 @@ use rustc_span::def_id::DefId; use crate::infer::canonical::{CanonicalVarValues, QueryRegionConstraints}; use crate::traits::query::NoSolution; -use crate::traits::{Canonical, DefiningAnchor}; +use crate::traits::Canonical; use crate::ty::{ self, FallibleTypeFolder, ToPredicate, Ty, TyCtxt, TypeFoldable, TypeFolder, TypeVisitable, TypeVisitor, @@ -114,7 +114,6 @@ impl MaybeCause { #[derive(Debug, PartialEq, Eq, Clone, Copy, Hash, HashStable, TypeFoldable, TypeVisitable)] pub struct QueryInput<'tcx, T> { pub goal: Goal<'tcx, T>, - pub anchor: DefiningAnchor<'tcx>, pub predefined_opaques_in_body: PredefinedOpaques<'tcx>, } diff --git a/compiler/rustc_middle/src/ty/closure.rs b/compiler/rustc_middle/src/ty/closure.rs index 7db64504f85..95d1e08b58b 100644 --- a/compiler/rustc_middle/src/ty/closure.rs +++ b/compiler/rustc_middle/src/ty/closure.rs @@ -45,7 +45,7 @@ impl UpvarId { /// Information describing the capture of an upvar. This is computed /// during `typeck`, specifically by `regionck`. -#[derive(PartialEq, Clone, Debug, Copy, TyEncodable, TyDecodable, HashStable)] +#[derive(Eq, PartialEq, Clone, Debug, Copy, TyEncodable, TyDecodable, HashStable, Hash)] #[derive(TypeFoldable, TypeVisitable)] pub enum UpvarCapture { /// Upvar is captured by value. This is always true when the @@ -73,7 +73,7 @@ pub type RootVariableMinCaptureList<'tcx> = FxIndexMap<hir::HirId, MinCaptureLis pub type MinCaptureList<'tcx> = Vec<CapturedPlace<'tcx>>; /// A composite describing a `Place` that is captured by a closure. -#[derive(PartialEq, Clone, Debug, TyEncodable, TyDecodable, HashStable)] +#[derive(Eq, PartialEq, Clone, Debug, TyEncodable, TyDecodable, HashStable, Hash)] #[derive(TypeFoldable, TypeVisitable)] pub struct CapturedPlace<'tcx> { /// Name and span where the binding happens. @@ -192,7 +192,7 @@ impl<'tcx> CapturedPlace<'tcx> { #[derive(Copy, Clone, Debug, HashStable)] pub struct ClosureTypeInfo<'tcx> { user_provided_sig: ty::CanonicalPolyFnSig<'tcx>, - captures: &'tcx [&'tcx ty::CapturedPlace<'tcx>], + captures: &'tcx ty::List<&'tcx ty::CapturedPlace<'tcx>>, kind_origin: Option<&'tcx (Span, HirPlace<'tcx>)>, } @@ -201,7 +201,7 @@ fn closure_typeinfo<'tcx>(tcx: TyCtxt<'tcx>, def: LocalDefId) -> ClosureTypeInfo let typeck_results = tcx.typeck(def); let user_provided_sig = typeck_results.user_provided_sigs[&def]; let captures = typeck_results.closure_min_captures_flattened(def); - let captures = tcx.arena.alloc_from_iter(captures); + let captures = tcx.mk_captures_from_iter(captures); let hir_id = tcx.local_def_id_to_hir_id(def); let kind_origin = typeck_results.closure_kind_origins().get(hir_id); ClosureTypeInfo { user_provided_sig, captures, kind_origin } @@ -253,7 +253,7 @@ pub fn is_ancestor_or_same_capture( /// Part of `MinCaptureInformationMap`; describes the capture kind (&, &mut, move) /// for a particular capture as well as identifying the part of the source code /// that triggered this capture to occur. -#[derive(PartialEq, Clone, Debug, Copy, TyEncodable, TyDecodable, HashStable)] +#[derive(Eq, PartialEq, Clone, Debug, Copy, TyEncodable, TyDecodable, HashStable, Hash)] #[derive(TypeFoldable, TypeVisitable)] pub struct CaptureInfo { /// Expr Id pointing to use that resulted in selecting the current capture kind @@ -332,7 +332,7 @@ pub fn place_to_string_for_capture<'tcx>(tcx: TyCtxt<'tcx>, place: &HirPlace<'tc curr_string } -#[derive(Clone, PartialEq, Debug, TyEncodable, TyDecodable, Copy, HashStable)] +#[derive(Eq, Clone, PartialEq, Debug, TyEncodable, TyDecodable, Copy, HashStable, Hash)] #[derive(TypeFoldable, TypeVisitable)] pub enum BorrowKind { /// Data must be immutable and is aliasable. diff --git a/compiler/rustc_middle/src/ty/codec.rs b/compiler/rustc_middle/src/ty/codec.rs index 0209c2dcc98..c0effe9804c 100644 --- a/compiler/rustc_middle/src/ty/codec.rs +++ b/compiler/rustc_middle/src/ty/codec.rs @@ -455,6 +455,12 @@ impl<'tcx, D: TyDecoder<I = TyCtxt<'tcx>>> RefDecodable<'tcx, D> for ty::List<Lo } } +impl<'tcx, D: TyDecoder<I = TyCtxt<'tcx>>> Decodable<D> for &'tcx ty::List<LocalDefId> { + fn decode(d: &mut D) -> Self { + RefDecodable::decode(d) + } +} + impl<'tcx, D: TyDecoder<I = TyCtxt<'tcx>>> RefDecodable<'tcx, D> for ty::List<(VariantIdx, FieldIdx)> { diff --git a/compiler/rustc_middle/src/ty/context.rs b/compiler/rustc_middle/src/ty/context.rs index 2a6449a5246..e1a8adca9da 100644 --- a/compiler/rustc_middle/src/ty/context.rs +++ b/compiler/rustc_middle/src/ty/context.rs @@ -85,6 +85,7 @@ use std::ops::{Bound, Deref}; #[allow(rustc::usage_of_ty_tykind)] impl<'tcx> Interner for TyCtxt<'tcx> { type DefId = DefId; + type DefiningOpaqueTypes = &'tcx ty::List<LocalDefId>; type AdtDef = ty::AdtDef<'tcx>; type GenericArgs = ty::GenericArgsRef<'tcx>; type GenericArg = ty::GenericArg<'tcx>; @@ -168,6 +169,7 @@ pub struct CtxtInterners<'tcx> { predefined_opaques_in_body: InternedSet<'tcx, PredefinedOpaquesData<'tcx>>, fields: InternedSet<'tcx, List<FieldIdx>>, local_def_ids: InternedSet<'tcx, List<LocalDefId>>, + captures: InternedSet<'tcx, List<&'tcx ty::CapturedPlace<'tcx>>>, offset_of: InternedSet<'tcx, List<(VariantIdx, FieldIdx)>>, } @@ -196,6 +198,7 @@ impl<'tcx> CtxtInterners<'tcx> { predefined_opaques_in_body: Default::default(), fields: Default::default(), local_def_ids: Default::default(), + captures: Default::default(), offset_of: Default::default(), } } @@ -1912,6 +1915,7 @@ slice_interners!( bound_variable_kinds: pub mk_bound_variable_kinds(ty::BoundVariableKind), fields: pub mk_fields(FieldIdx), local_def_ids: intern_local_def_ids(LocalDefId), + captures: intern_captures(&'tcx ty::CapturedPlace<'tcx>), offset_of: pub mk_offset_of((VariantIdx, FieldIdx)), ); @@ -2233,6 +2237,17 @@ impl<'tcx> TyCtxt<'tcx> { T::collect_and_apply(iter, |xs| self.mk_local_def_ids(xs)) } + pub fn mk_captures_from_iter<I, T>(self, iter: I) -> T::Output + where + I: Iterator<Item = T>, + T: CollectAndApply< + &'tcx ty::CapturedPlace<'tcx>, + &'tcx List<&'tcx ty::CapturedPlace<'tcx>>, + >, + { + T::collect_and_apply(iter, |xs| self.intern_captures(xs)) + } + pub fn mk_const_list_from_iter<I, T>(self, iter: I) -> T::Output where I: Iterator<Item = T>, diff --git a/compiler/rustc_middle/src/ty/list.rs b/compiler/rustc_middle/src/ty/list.rs index 04e165c8a73..0db541899d2 100644 --- a/compiler/rustc_middle/src/ty/list.rs +++ b/compiler/rustc_middle/src/ty/list.rs @@ -55,6 +55,12 @@ struct ListSkeleton<H, T> { data: [T; 0], } +impl<T> Default for &List<T> { + fn default() -> Self { + List::empty() + } +} + extern "C" { /// A dummy type used to force `List` to be unsized while not requiring /// references to it be wide pointers. diff --git a/compiler/rustc_next_trait_solver/src/canonicalizer.rs b/compiler/rustc_next_trait_solver/src/canonicalizer.rs index 30c8fc5798f..6600b92fb31 100644 --- a/compiler/rustc_next_trait_solver/src/canonicalizer.rs +++ b/compiler/rustc_next_trait_solver/src/canonicalizer.rs @@ -69,7 +69,8 @@ impl<'a, Infcx: InferCtxtLike<Interner = I>, I: Interner> Canonicalizer<'a, Infc let (max_universe, variables) = canonicalizer.finalize(); - Canonical { max_universe, variables, value } + let defining_opaque_types = infcx.defining_opaque_types(); + Canonical { defining_opaque_types, max_universe, variables, value } } fn finalize(self) -> (ty::UniverseIndex, I::CanonicalVars) { diff --git a/compiler/rustc_trait_selection/src/infer.rs b/compiler/rustc_trait_selection/src/infer.rs index 7056288e758..0595e82b39e 100644 --- a/compiler/rustc_trait_selection/src/infer.rs +++ b/compiler/rustc_trait_selection/src/infer.rs @@ -1,5 +1,5 @@ use crate::traits::query::evaluate_obligation::InferCtxtExt as _; -use crate::traits::{self, DefiningAnchor, ObligationCtxt, SelectionContext}; +use crate::traits::{self, ObligationCtxt, SelectionContext}; use crate::traits::TraitEngineExt as _; use rustc_hir::def_id::DefId; @@ -132,9 +132,8 @@ impl<'tcx> InferCtxtBuilder<'tcx> { R: Debug + TypeFoldable<TyCtxt<'tcx>>, Canonical<'tcx, QueryResponse<'tcx, R>>: ArenaAllocatable<'tcx>, { - let (infcx, key, canonical_inference_vars) = self - .with_opaque_type_inference(DefiningAnchor::Bubble) - .build_with_canonical(DUMMY_SP, canonical_key); + let (infcx, key, canonical_inference_vars) = + self.build_with_canonical(DUMMY_SP, canonical_key); let ocx = ObligationCtxt::new(&infcx); let value = operation(&ocx, key)?; ocx.make_canonicalized_query_response(canonical_inference_vars, value) diff --git a/compiler/rustc_trait_selection/src/solve/eval_ctxt/canonical.rs b/compiler/rustc_trait_selection/src/solve/eval_ctxt/canonical.rs index 4a4efb6884f..0b37163d597 100644 --- a/compiler/rustc_trait_selection/src/solve/eval_ctxt/canonical.rs +++ b/compiler/rustc_trait_selection/src/solve/eval_ctxt/canonical.rs @@ -68,7 +68,6 @@ impl<'tcx> EvalCtxt<'_, 'tcx> { &mut orig_values, QueryInput { goal, - anchor: self.infcx.defining_use_anchor, predefined_opaques_in_body: self .tcx() .mk_predefined_opaques_in_body(PredefinedOpaquesData { opaque_types }), diff --git a/compiler/rustc_trait_selection/src/solve/eval_ctxt/mod.rs b/compiler/rustc_trait_selection/src/solve/eval_ctxt/mod.rs index 1739bd70e7b..0154aff12b6 100644 --- a/compiler/rustc_trait_selection/src/solve/eval_ctxt/mod.rs +++ b/compiler/rustc_trait_selection/src/solve/eval_ctxt/mod.rs @@ -1,5 +1,5 @@ use rustc_data_structures::stack::ensure_sufficient_stack; -use rustc_hir::def_id::{DefId, LocalDefId}; +use rustc_hir::def_id::DefId; use rustc_infer::infer::at::ToTrace; use rustc_infer::infer::canonical::CanonicalVarValues; use rustc_infer::infer::type_variable::{TypeVariableOrigin, TypeVariableOriginKind}; @@ -230,7 +230,6 @@ impl<'a, 'tcx> EvalCtxt<'a, 'tcx> { .infer_ctxt() .intercrate(intercrate) .with_next_trait_solver(true) - .with_opaque_type_inference(canonical_input.value.anchor) .build_with_canonical(DUMMY_SP, &canonical_input); let mut ecx = EvalCtxt { @@ -936,8 +935,8 @@ impl<'tcx> EvalCtxt<'_, 'tcx> { } } - pub(super) fn can_define_opaque_ty(&self, def_id: LocalDefId) -> bool { - self.infcx.opaque_type_origin(def_id).is_some() + pub(super) fn can_define_opaque_ty(&self, def_id: impl Into<DefId>) -> bool { + self.infcx.can_define_opaque_ty(def_id) } pub(super) fn insert_hidden_type( diff --git a/compiler/rustc_trait_selection/src/solve/mod.rs b/compiler/rustc_trait_selection/src/solve/mod.rs index 8294a8a67b1..da5cd15a10d 100644 --- a/compiler/rustc_trait_selection/src/solve/mod.rs +++ b/compiler/rustc_trait_selection/src/solve/mod.rs @@ -316,5 +316,6 @@ fn response_no_constraints_raw<'tcx>( external_constraints: tcx.mk_external_constraints(ExternalConstraintsData::default()), certainty, }, + defining_opaque_types: Default::default(), } } diff --git a/compiler/rustc_trait_selection/src/solve/trait_goals.rs b/compiler/rustc_trait_selection/src/solve/trait_goals.rs index 371668bf617..e522339358a 100644 --- a/compiler/rustc_trait_selection/src/solve/trait_goals.rs +++ b/compiler/rustc_trait_selection/src/solve/trait_goals.rs @@ -155,10 +155,7 @@ impl<'tcx> assembly::GoalKind<'tcx> for TraitPredicate<'tcx> { if let ty::Alias(ty::Opaque, opaque_ty) = goal.predicate.self_ty().kind() { if matches!(goal.param_env.reveal(), Reveal::All) || matches!(ecx.solver_mode(), SolverMode::Coherence) - || opaque_ty - .def_id - .as_local() - .is_some_and(|def_id| ecx.can_define_opaque_ty(def_id)) + || ecx.can_define_opaque_ty(opaque_ty.def_id) { return Err(NoSolution); } diff --git a/compiler/rustc_trait_selection/src/traits/query/type_op/mod.rs b/compiler/rustc_trait_selection/src/traits/query/type_op/mod.rs index faf218131b8..ae4cdb9258e 100644 --- a/compiler/rustc_trait_selection/src/traits/query/type_op/mod.rs +++ b/compiler/rustc_trait_selection/src/traits/query/type_op/mod.rs @@ -159,53 +159,70 @@ where .0); } + let mut error_info = None; let mut region_constraints = QueryRegionConstraints::default(); - let (output, error_info, mut obligations, _) = - Q::fully_perform_into(self, infcx, &mut region_constraints, span).map_err(|_| { - infcx.dcx().span_delayed_bug(span, format!("error performing {self:?}")) - })?; - - // Typically, instantiating NLL query results does not - // create obligations. However, in some cases there - // are unresolved type variables, and unify them *can* - // create obligations. In that case, we have to go - // fulfill them. We do this via a (recursive) query. - while !obligations.is_empty() { - trace!("{:#?}", obligations); - let mut progress = false; - for obligation in std::mem::take(&mut obligations) { - let obligation = infcx.resolve_vars_if_possible(obligation); - match ProvePredicate::fully_perform_into( - obligation.param_env.and(ProvePredicate::new(obligation.predicate)), - infcx, - &mut region_constraints, - span, - ) { - Ok(((), _, new, certainty)) => { - obligations.extend(new); - progress = true; - if let Certainty::Ambiguous = certainty { - obligations.push(obligation); + + // HACK(type_alias_impl_trait): When moving an opaque type to hidden type mapping from the query to the current inferctxt, + // we sometimes end up with `Opaque<'a> = Opaque<'b>` instead of an actual hidden type. In that case we don't register a + // hidden type but just equate the lifetimes. Thus we need to scrape the region constraints even though we're also manually + // collecting region constraints via `region_constraints`. + let (mut output, _) = scrape_region_constraints( + infcx, + |_ocx| { + let (output, ei, mut obligations, _) = + Q::fully_perform_into(self, infcx, &mut region_constraints, span)?; + error_info = ei; + + // Typically, instantiating NLL query results does not + // create obligations. However, in some cases there + // are unresolved type variables, and unify them *can* + // create obligations. In that case, we have to go + // fulfill them. We do this via a (recursive) query. + while !obligations.is_empty() { + trace!("{:#?}", obligations); + let mut progress = false; + for obligation in std::mem::take(&mut obligations) { + let obligation = infcx.resolve_vars_if_possible(obligation); + match ProvePredicate::fully_perform_into( + obligation.param_env.and(ProvePredicate::new(obligation.predicate)), + infcx, + &mut region_constraints, + span, + ) { + Ok(((), _, new, certainty)) => { + obligations.extend(new); + progress = true; + if let Certainty::Ambiguous = certainty { + obligations.push(obligation); + } + } + Err(_) => obligations.push(obligation), } } - Err(_) => obligations.push(obligation), + if !progress { + infcx.dcx().span_bug( + span, + format!("ambiguity processing {obligations:?} from {self:?}"), + ); + } } - } - if !progress { - infcx - .dcx() - .span_bug(span, format!("ambiguity processing {obligations:?} from {self:?}")); - } - } - - Ok(TypeOpOutput { - output, - constraints: if region_constraints.is_empty() { - None - } else { - Some(infcx.tcx.arena.alloc(region_constraints)) + Ok(output) }, - error_info, - }) + "fully_perform", + span, + )?; + output.error_info = error_info; + if let Some(constraints) = output.constraints { + region_constraints + .member_constraints + .extend(constraints.member_constraints.iter().cloned()); + region_constraints.outlives.extend(constraints.outlives.iter().cloned()); + } + output.constraints = if region_constraints.is_empty() { + None + } else { + Some(infcx.tcx.arena.alloc(region_constraints)) + }; + Ok(output) } } diff --git a/compiler/rustc_type_ir/src/canonical.rs b/compiler/rustc_type_ir/src/canonical.rs index ad18ef24984..06a5051956a 100644 --- a/compiler/rustc_type_ir/src/canonical.rs +++ b/compiler/rustc_type_ir/src/canonical.rs @@ -16,6 +16,8 @@ use crate::{Interner, PlaceholderLike, UniverseIndex}; pub struct Canonical<I: Interner, V> { pub value: V, pub max_universe: UniverseIndex, + // FIXME(lcnr, oli-obk): try moving this into the query inputs instead + pub defining_opaque_types: I::DefiningOpaqueTypes, pub variables: I::CanonicalVars, } @@ -44,8 +46,8 @@ impl<I: Interner, V> Canonical<I, V> { /// let b: Canonical<I, (T, Ty<I>)> = a.unchecked_map(|v| (v, ty)); /// ``` pub fn unchecked_map<W>(self, map_op: impl FnOnce(V) -> W) -> Canonical<I, W> { - let Canonical { max_universe, variables, value } = self; - Canonical { max_universe, variables, value: map_op(value) } + let Canonical { defining_opaque_types, max_universe, variables, value } = self; + Canonical { defining_opaque_types, max_universe, variables, value: map_op(value) } } /// Allows you to map the `value` of a canonical while keeping the same set of @@ -54,8 +56,8 @@ impl<I: Interner, V> Canonical<I, V> { /// **WARNING:** This function is very easy to mis-use, hence the name! See /// the comment of [Canonical::unchecked_map] for more details. pub fn unchecked_rebind<W>(self, value: W) -> Canonical<I, W> { - let Canonical { max_universe, variables, value: _ } = self; - Canonical { max_universe, variables, value } + let Canonical { defining_opaque_types, max_universe, variables, value: _ } = self; + Canonical { defining_opaque_types, max_universe, variables, value } } } @@ -63,28 +65,32 @@ impl<I: Interner, V: Eq> Eq for Canonical<I, V> {} impl<I: Interner, V: PartialEq> PartialEq for Canonical<I, V> { fn eq(&self, other: &Self) -> bool { - self.value == other.value - && self.max_universe == other.max_universe - && self.variables == other.variables + let Self { value, max_universe, variables, defining_opaque_types } = self; + *value == other.value + && *max_universe == other.max_universe + && *variables == other.variables + && *defining_opaque_types == other.defining_opaque_types } } impl<I: Interner, V: fmt::Display> fmt::Display for Canonical<I, V> { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + let Self { value, max_universe, variables, defining_opaque_types } = self; write!( f, - "Canonical {{ value: {}, max_universe: {:?}, variables: {:?} }}", - self.value, self.max_universe, self.variables + "Canonical {{ value: {value}, max_universe: {max_universe:?}, variables: {variables:?}, defining_opaque_types: {defining_opaque_types:?} }}", ) } } impl<I: Interner, V: fmt::Debug> fmt::Debug for Canonical<I, V> { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + let Self { value, max_universe, variables, defining_opaque_types } = self; f.debug_struct("Canonical") - .field("value", &self.value) - .field("max_universe", &self.max_universe) - .field("variables", &self.variables) + .field("value", &value) + .field("max_universe", &max_universe) + .field("variables", &variables) + .field("defining_opaque_types", &defining_opaque_types) .finish() } } @@ -100,6 +106,7 @@ where value: self.value.try_fold_with(folder)?, max_universe: self.max_universe.try_fold_with(folder)?, variables: self.variables.try_fold_with(folder)?, + defining_opaque_types: self.defining_opaque_types, }) } } @@ -109,9 +116,11 @@ where I::CanonicalVars: TypeVisitable<I>, { fn visit_with<F: TypeVisitor<I>>(&self, folder: &mut F) -> F::Result { - try_visit!(self.value.visit_with(folder)); - try_visit!(self.max_universe.visit_with(folder)); - self.variables.visit_with(folder) + let Self { value, max_universe, variables, defining_opaque_types } = self; + try_visit!(value.visit_with(folder)); + try_visit!(max_universe.visit_with(folder)); + try_visit!(defining_opaque_types.visit_with(folder)); + variables.visit_with(folder) } } diff --git a/compiler/rustc_type_ir/src/debug.rs b/compiler/rustc_type_ir/src/debug.rs index 9c8e45b4338..9298360f749 100644 --- a/compiler/rustc_type_ir/src/debug.rs +++ b/compiler/rustc_type_ir/src/debug.rs @@ -43,6 +43,10 @@ impl<I: Interner> InferCtxtLike for NoInfcx<I> { fn probe_ct_var(&self, _vid: ConstVid) -> Option<I::Const> { None } + + fn defining_opaque_types(&self) -> <Self::Interner as Interner>::DefiningOpaqueTypes { + Default::default() + } } pub trait DebugWithInfcx<I: Interner>: fmt::Debug { diff --git a/compiler/rustc_type_ir/src/infcx.rs b/compiler/rustc_type_ir/src/infcx.rs index 28b71f0ea13..a53287c1987 100644 --- a/compiler/rustc_type_ir/src/infcx.rs +++ b/compiler/rustc_type_ir/src/infcx.rs @@ -37,4 +37,6 @@ pub trait InferCtxtLike { /// Resolve `ConstVid` to its inferred type, if it has been equated with a non-infer type. fn probe_ct_var(&self, vid: ConstVid) -> Option<<Self::Interner as Interner>::Const>; + + fn defining_opaque_types(&self) -> <Self::Interner as Interner>::DefiningOpaqueTypes; } diff --git a/compiler/rustc_type_ir/src/interner.rs b/compiler/rustc_type_ir/src/interner.rs index 27d9215f8d4..70f7e58be19 100644 --- a/compiler/rustc_type_ir/src/interner.rs +++ b/compiler/rustc_type_ir/src/interner.rs @@ -11,6 +11,7 @@ use crate::{ pub trait Interner: Sized + Copy { type DefId: Copy + Debug + Hash + Eq; + type DefiningOpaqueTypes: Copy + Debug + Hash + Default + Eq + TypeVisitable<Self>; type AdtDef: Copy + Debug + Hash + Eq; type GenericArgs: Copy diff --git a/src/tools/tidy/src/issues.txt b/src/tools/tidy/src/issues.txt index 060a6fa903f..e14932ad99d 100644 --- a/src/tools/tidy/src/issues.txt +++ b/src/tools/tidy/src/issues.txt @@ -4132,7 +4132,6 @@ ui/type-alias-impl-trait/issue-52843.rs ui/type-alias-impl-trait/issue-53092-2.rs ui/type-alias-impl-trait/issue-53092.rs ui/type-alias-impl-trait/issue-53096.rs -ui/type-alias-impl-trait/issue-53398-cyclic-types.rs ui/type-alias-impl-trait/issue-53598.rs ui/type-alias-impl-trait/issue-53678-coroutine-and-const-fn.rs ui/type-alias-impl-trait/issue-55099-lifetime-inference.rs diff --git a/tests/mir-opt/address_of.address_of_reborrow.SimplifyCfg-initial.after.mir b/tests/mir-opt/address_of.address_of_reborrow.SimplifyCfg-initial.after.mir index 76938c14e1e..cb72ad3d253 100644 --- a/tests/mir-opt/address_of.address_of_reborrow.SimplifyCfg-initial.after.mir +++ b/tests/mir-opt/address_of.address_of_reborrow.SimplifyCfg-initial.after.mir @@ -1,36 +1,36 @@ // MIR for `address_of_reborrow` after SimplifyCfg-initial | User Type Annotations -| 0: user_ty: Canonical { value: Ty(*const ^0), max_universe: U0, variables: [CanonicalVarInfo { kind: Ty(General(U0)) }] }, span: $DIR/address_of.rs:8:5: 8:18, inferred_ty: *const [i32; 10] -| 1: user_ty: Canonical { value: Ty(*const dyn std::marker::Send), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }] }, span: $DIR/address_of.rs:10:5: 10:25, inferred_ty: *const dyn std::marker::Send -| 2: user_ty: Canonical { value: Ty(*const ^0), max_universe: U0, variables: [CanonicalVarInfo { kind: Ty(General(U0)) }] }, span: $DIR/address_of.rs:14:12: 14:20, inferred_ty: *const [i32; 10] -| 3: user_ty: Canonical { value: Ty(*const ^0), max_universe: U0, variables: [CanonicalVarInfo { kind: Ty(General(U0)) }] }, span: $DIR/address_of.rs:14:12: 14:20, inferred_ty: *const [i32; 10] -| 4: user_ty: Canonical { value: Ty(*const [i32; 10]), max_universe: U0, variables: [] }, span: $DIR/address_of.rs:15:12: 15:28, inferred_ty: *const [i32; 10] -| 5: user_ty: Canonical { value: Ty(*const [i32; 10]), max_universe: U0, variables: [] }, span: $DIR/address_of.rs:15:12: 15:28, inferred_ty: *const [i32; 10] -| 6: user_ty: Canonical { value: Ty(*const dyn std::marker::Send), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }] }, span: $DIR/address_of.rs:16:12: 16:27, inferred_ty: *const dyn std::marker::Send -| 7: user_ty: Canonical { value: Ty(*const dyn std::marker::Send), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }] }, span: $DIR/address_of.rs:16:12: 16:27, inferred_ty: *const dyn std::marker::Send -| 8: user_ty: Canonical { value: Ty(*const [i32]), max_universe: U0, variables: [] }, span: $DIR/address_of.rs:17:12: 17:24, inferred_ty: *const [i32] -| 9: user_ty: Canonical { value: Ty(*const [i32]), max_universe: U0, variables: [] }, span: $DIR/address_of.rs:17:12: 17:24, inferred_ty: *const [i32] -| 10: user_ty: Canonical { value: Ty(*const ^0), max_universe: U0, variables: [CanonicalVarInfo { kind: Ty(General(U0)) }] }, span: $DIR/address_of.rs:19:5: 19:18, inferred_ty: *const [i32; 10] -| 11: user_ty: Canonical { value: Ty(*const dyn std::marker::Send), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }] }, span: $DIR/address_of.rs:21:5: 21:25, inferred_ty: *const dyn std::marker::Send -| 12: user_ty: Canonical { value: Ty(*const ^0), max_universe: U0, variables: [CanonicalVarInfo { kind: Ty(General(U0)) }] }, span: $DIR/address_of.rs:24:12: 24:20, inferred_ty: *const [i32; 10] -| 13: user_ty: Canonical { value: Ty(*const ^0), max_universe: U0, variables: [CanonicalVarInfo { kind: Ty(General(U0)) }] }, span: $DIR/address_of.rs:24:12: 24:20, inferred_ty: *const [i32; 10] -| 14: user_ty: Canonical { value: Ty(*const [i32; 10]), max_universe: U0, variables: [] }, span: $DIR/address_of.rs:25:12: 25:28, inferred_ty: *const [i32; 10] -| 15: user_ty: Canonical { value: Ty(*const [i32; 10]), max_universe: U0, variables: [] }, span: $DIR/address_of.rs:25:12: 25:28, inferred_ty: *const [i32; 10] -| 16: user_ty: Canonical { value: Ty(*const dyn std::marker::Send), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }] }, span: $DIR/address_of.rs:26:12: 26:27, inferred_ty: *const dyn std::marker::Send -| 17: user_ty: Canonical { value: Ty(*const dyn std::marker::Send), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }] }, span: $DIR/address_of.rs:26:12: 26:27, inferred_ty: *const dyn std::marker::Send -| 18: user_ty: Canonical { value: Ty(*const [i32]), max_universe: U0, variables: [] }, span: $DIR/address_of.rs:27:12: 27:24, inferred_ty: *const [i32] -| 19: user_ty: Canonical { value: Ty(*const [i32]), max_universe: U0, variables: [] }, span: $DIR/address_of.rs:27:12: 27:24, inferred_ty: *const [i32] -| 20: user_ty: Canonical { value: Ty(*mut ^0), max_universe: U0, variables: [CanonicalVarInfo { kind: Ty(General(U0)) }] }, span: $DIR/address_of.rs:29:5: 29:16, inferred_ty: *mut [i32; 10] -| 21: user_ty: Canonical { value: Ty(*mut dyn std::marker::Send), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }] }, span: $DIR/address_of.rs:31:5: 31:23, inferred_ty: *mut dyn std::marker::Send -| 22: user_ty: Canonical { value: Ty(*mut ^0), max_universe: U0, variables: [CanonicalVarInfo { kind: Ty(General(U0)) }] }, span: $DIR/address_of.rs:34:12: 34:18, inferred_ty: *mut [i32; 10] -| 23: user_ty: Canonical { value: Ty(*mut ^0), max_universe: U0, variables: [CanonicalVarInfo { kind: Ty(General(U0)) }] }, span: $DIR/address_of.rs:34:12: 34:18, inferred_ty: *mut [i32; 10] -| 24: user_ty: Canonical { value: Ty(*mut [i32; 10]), max_universe: U0, variables: [] }, span: $DIR/address_of.rs:35:12: 35:26, inferred_ty: *mut [i32; 10] -| 25: user_ty: Canonical { value: Ty(*mut [i32; 10]), max_universe: U0, variables: [] }, span: $DIR/address_of.rs:35:12: 35:26, inferred_ty: *mut [i32; 10] -| 26: user_ty: Canonical { value: Ty(*mut dyn std::marker::Send), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }] }, span: $DIR/address_of.rs:36:12: 36:25, inferred_ty: *mut dyn std::marker::Send -| 27: user_ty: Canonical { value: Ty(*mut dyn std::marker::Send), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }] }, span: $DIR/address_of.rs:36:12: 36:25, inferred_ty: *mut dyn std::marker::Send -| 28: user_ty: Canonical { value: Ty(*mut [i32]), max_universe: U0, variables: [] }, span: $DIR/address_of.rs:37:12: 37:22, inferred_ty: *mut [i32] -| 29: user_ty: Canonical { value: Ty(*mut [i32]), max_universe: U0, variables: [] }, span: $DIR/address_of.rs:37:12: 37:22, inferred_ty: *mut [i32] +| 0: user_ty: Canonical { value: Ty(*const ^0), max_universe: U0, variables: [CanonicalVarInfo { kind: Ty(General(U0)) }], defining_opaque_types: [] }, span: $DIR/address_of.rs:8:5: 8:18, inferred_ty: *const [i32; 10] +| 1: user_ty: Canonical { value: Ty(*const dyn std::marker::Send), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }], defining_opaque_types: [] }, span: $DIR/address_of.rs:10:5: 10:25, inferred_ty: *const dyn std::marker::Send +| 2: user_ty: Canonical { value: Ty(*const ^0), max_universe: U0, variables: [CanonicalVarInfo { kind: Ty(General(U0)) }], defining_opaque_types: [] }, span: $DIR/address_of.rs:14:12: 14:20, inferred_ty: *const [i32; 10] +| 3: user_ty: Canonical { value: Ty(*const ^0), max_universe: U0, variables: [CanonicalVarInfo { kind: Ty(General(U0)) }], defining_opaque_types: [] }, span: $DIR/address_of.rs:14:12: 14:20, inferred_ty: *const [i32; 10] +| 4: user_ty: Canonical { value: Ty(*const [i32; 10]), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/address_of.rs:15:12: 15:28, inferred_ty: *const [i32; 10] +| 5: user_ty: Canonical { value: Ty(*const [i32; 10]), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/address_of.rs:15:12: 15:28, inferred_ty: *const [i32; 10] +| 6: user_ty: Canonical { value: Ty(*const dyn std::marker::Send), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }], defining_opaque_types: [] }, span: $DIR/address_of.rs:16:12: 16:27, inferred_ty: *const dyn std::marker::Send +| 7: user_ty: Canonical { value: Ty(*const dyn std::marker::Send), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }], defining_opaque_types: [] }, span: $DIR/address_of.rs:16:12: 16:27, inferred_ty: *const dyn std::marker::Send +| 8: user_ty: Canonical { value: Ty(*const [i32]), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/address_of.rs:17:12: 17:24, inferred_ty: *const [i32] +| 9: user_ty: Canonical { value: Ty(*const [i32]), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/address_of.rs:17:12: 17:24, inferred_ty: *const [i32] +| 10: user_ty: Canonical { value: Ty(*const ^0), max_universe: U0, variables: [CanonicalVarInfo { kind: Ty(General(U0)) }], defining_opaque_types: [] }, span: $DIR/address_of.rs:19:5: 19:18, inferred_ty: *const [i32; 10] +| 11: user_ty: Canonical { value: Ty(*const dyn std::marker::Send), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }], defining_opaque_types: [] }, span: $DIR/address_of.rs:21:5: 21:25, inferred_ty: *const dyn std::marker::Send +| 12: user_ty: Canonical { value: Ty(*const ^0), max_universe: U0, variables: [CanonicalVarInfo { kind: Ty(General(U0)) }], defining_opaque_types: [] }, span: $DIR/address_of.rs:24:12: 24:20, inferred_ty: *const [i32; 10] +| 13: user_ty: Canonical { value: Ty(*const ^0), max_universe: U0, variables: [CanonicalVarInfo { kind: Ty(General(U0)) }], defining_opaque_types: [] }, span: $DIR/address_of.rs:24:12: 24:20, inferred_ty: *const [i32; 10] +| 14: user_ty: Canonical { value: Ty(*const [i32; 10]), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/address_of.rs:25:12: 25:28, inferred_ty: *const [i32; 10] +| 15: user_ty: Canonical { value: Ty(*const [i32; 10]), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/address_of.rs:25:12: 25:28, inferred_ty: *const [i32; 10] +| 16: user_ty: Canonical { value: Ty(*const dyn std::marker::Send), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }], defining_opaque_types: [] }, span: $DIR/address_of.rs:26:12: 26:27, inferred_ty: *const dyn std::marker::Send +| 17: user_ty: Canonical { value: Ty(*const dyn std::marker::Send), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }], defining_opaque_types: [] }, span: $DIR/address_of.rs:26:12: 26:27, inferred_ty: *const dyn std::marker::Send +| 18: user_ty: Canonical { value: Ty(*const [i32]), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/address_of.rs:27:12: 27:24, inferred_ty: *const [i32] +| 19: user_ty: Canonical { value: Ty(*const [i32]), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/address_of.rs:27:12: 27:24, inferred_ty: *const [i32] +| 20: user_ty: Canonical { value: Ty(*mut ^0), max_universe: U0, variables: [CanonicalVarInfo { kind: Ty(General(U0)) }], defining_opaque_types: [] }, span: $DIR/address_of.rs:29:5: 29:16, inferred_ty: *mut [i32; 10] +| 21: user_ty: Canonical { value: Ty(*mut dyn std::marker::Send), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }], defining_opaque_types: [] }, span: $DIR/address_of.rs:31:5: 31:23, inferred_ty: *mut dyn std::marker::Send +| 22: user_ty: Canonical { value: Ty(*mut ^0), max_universe: U0, variables: [CanonicalVarInfo { kind: Ty(General(U0)) }], defining_opaque_types: [] }, span: $DIR/address_of.rs:34:12: 34:18, inferred_ty: *mut [i32; 10] +| 23: user_ty: Canonical { value: Ty(*mut ^0), max_universe: U0, variables: [CanonicalVarInfo { kind: Ty(General(U0)) }], defining_opaque_types: [] }, span: $DIR/address_of.rs:34:12: 34:18, inferred_ty: *mut [i32; 10] +| 24: user_ty: Canonical { value: Ty(*mut [i32; 10]), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/address_of.rs:35:12: 35:26, inferred_ty: *mut [i32; 10] +| 25: user_ty: Canonical { value: Ty(*mut [i32; 10]), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/address_of.rs:35:12: 35:26, inferred_ty: *mut [i32; 10] +| 26: user_ty: Canonical { value: Ty(*mut dyn std::marker::Send), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }], defining_opaque_types: [] }, span: $DIR/address_of.rs:36:12: 36:25, inferred_ty: *mut dyn std::marker::Send +| 27: user_ty: Canonical { value: Ty(*mut dyn std::marker::Send), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }], defining_opaque_types: [] }, span: $DIR/address_of.rs:36:12: 36:25, inferred_ty: *mut dyn std::marker::Send +| 28: user_ty: Canonical { value: Ty(*mut [i32]), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/address_of.rs:37:12: 37:22, inferred_ty: *mut [i32] +| 29: user_ty: Canonical { value: Ty(*mut [i32]), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/address_of.rs:37:12: 37:22, inferred_ty: *mut [i32] | fn address_of_reborrow() -> () { let mut _0: (); diff --git a/tests/mir-opt/basic_assignment.main.SimplifyCfg-initial.after.mir b/tests/mir-opt/basic_assignment.main.SimplifyCfg-initial.after.mir index 5df6633880e..5c0d1e9b93f 100644 --- a/tests/mir-opt/basic_assignment.main.SimplifyCfg-initial.after.mir +++ b/tests/mir-opt/basic_assignment.main.SimplifyCfg-initial.after.mir @@ -1,8 +1,8 @@ // MIR for `main` after SimplifyCfg-initial | User Type Annotations -| 0: user_ty: Canonical { value: Ty(std::option::Option<std::boxed::Box<u32>>), max_universe: U0, variables: [] }, span: $DIR/basic_assignment.rs:38:17: 38:33, inferred_ty: std::option::Option<std::boxed::Box<u32>> -| 1: user_ty: Canonical { value: Ty(std::option::Option<std::boxed::Box<u32>>), max_universe: U0, variables: [] }, span: $DIR/basic_assignment.rs:38:17: 38:33, inferred_ty: std::option::Option<std::boxed::Box<u32>> +| 0: user_ty: Canonical { value: Ty(std::option::Option<std::boxed::Box<u32>>), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/basic_assignment.rs:38:17: 38:33, inferred_ty: std::option::Option<std::boxed::Box<u32>> +| 1: user_ty: Canonical { value: Ty(std::option::Option<std::boxed::Box<u32>>), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/basic_assignment.rs:38:17: 38:33, inferred_ty: std::option::Option<std::boxed::Box<u32>> | fn main() -> () { let mut _0: (); diff --git a/tests/mir-opt/building/issue_101867.main.built.after.mir b/tests/mir-opt/building/issue_101867.main.built.after.mir index 19a777cb03b..0f7917dbb5c 100644 --- a/tests/mir-opt/building/issue_101867.main.built.after.mir +++ b/tests/mir-opt/building/issue_101867.main.built.after.mir @@ -1,8 +1,8 @@ // MIR for `main` after built | User Type Annotations -| 0: user_ty: Canonical { value: Ty(std::option::Option<u8>), max_universe: U0, variables: [] }, span: $DIR/issue_101867.rs:4:12: 4:22, inferred_ty: std::option::Option<u8> -| 1: user_ty: Canonical { value: Ty(std::option::Option<u8>), max_universe: U0, variables: [] }, span: $DIR/issue_101867.rs:4:12: 4:22, inferred_ty: std::option::Option<u8> +| 0: user_ty: Canonical { value: Ty(std::option::Option<u8>), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/issue_101867.rs:4:12: 4:22, inferred_ty: std::option::Option<u8> +| 1: user_ty: Canonical { value: Ty(std::option::Option<u8>), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/issue_101867.rs:4:12: 4:22, inferred_ty: std::option::Option<u8> | fn main() -> () { let mut _0: (); diff --git a/tests/mir-opt/building/receiver_ptr_mutability.main.built.after.mir b/tests/mir-opt/building/receiver_ptr_mutability.main.built.after.mir index e07c2b6fa9d..1855bb0787d 100644 --- a/tests/mir-opt/building/receiver_ptr_mutability.main.built.after.mir +++ b/tests/mir-opt/building/receiver_ptr_mutability.main.built.after.mir @@ -1,10 +1,10 @@ // MIR for `main` after built | User Type Annotations -| 0: user_ty: Canonical { value: Ty(*mut Test), max_universe: U0, variables: [] }, span: $DIR/receiver_ptr_mutability.rs:15:14: 15:23, inferred_ty: *mut Test -| 1: user_ty: Canonical { value: Ty(*mut Test), max_universe: U0, variables: [] }, span: $DIR/receiver_ptr_mutability.rs:15:14: 15:23, inferred_ty: *mut Test -| 2: user_ty: Canonical { value: Ty(&&&&*mut Test), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }, CanonicalVarInfo { kind: Region(U0) }, CanonicalVarInfo { kind: Region(U0) }, CanonicalVarInfo { kind: Region(U0) }] }, span: $DIR/receiver_ptr_mutability.rs:19:18: 19:31, inferred_ty: &&&&*mut Test -| 3: user_ty: Canonical { value: Ty(&&&&*mut Test), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }, CanonicalVarInfo { kind: Region(U0) }, CanonicalVarInfo { kind: Region(U0) }, CanonicalVarInfo { kind: Region(U0) }] }, span: $DIR/receiver_ptr_mutability.rs:19:18: 19:31, inferred_ty: &&&&*mut Test +| 0: user_ty: Canonical { value: Ty(*mut Test), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/receiver_ptr_mutability.rs:15:14: 15:23, inferred_ty: *mut Test +| 1: user_ty: Canonical { value: Ty(*mut Test), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/receiver_ptr_mutability.rs:15:14: 15:23, inferred_ty: *mut Test +| 2: user_ty: Canonical { value: Ty(&&&&*mut Test), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }, CanonicalVarInfo { kind: Region(U0) }, CanonicalVarInfo { kind: Region(U0) }, CanonicalVarInfo { kind: Region(U0) }], defining_opaque_types: [] }, span: $DIR/receiver_ptr_mutability.rs:19:18: 19:31, inferred_ty: &&&&*mut Test +| 3: user_ty: Canonical { value: Ty(&&&&*mut Test), max_universe: U0, variables: [CanonicalVarInfo { kind: Region(U0) }, CanonicalVarInfo { kind: Region(U0) }, CanonicalVarInfo { kind: Region(U0) }, CanonicalVarInfo { kind: Region(U0) }], defining_opaque_types: [] }, span: $DIR/receiver_ptr_mutability.rs:19:18: 19:31, inferred_ty: &&&&*mut Test | fn main() -> () { let mut _0: (); diff --git a/tests/mir-opt/issue_72181_1.main.built.after.mir b/tests/mir-opt/issue_72181_1.main.built.after.mir index ae0dc9a0b6a..e8ad5cd8d16 100644 --- a/tests/mir-opt/issue_72181_1.main.built.after.mir +++ b/tests/mir-opt/issue_72181_1.main.built.after.mir @@ -1,8 +1,8 @@ // MIR for `main` after built | User Type Annotations -| 0: user_ty: Canonical { value: Ty(Void), max_universe: U0, variables: [] }, span: $DIR/issue_72181_1.rs:17:12: 17:16, inferred_ty: Void -| 1: user_ty: Canonical { value: Ty(Void), max_universe: U0, variables: [] }, span: $DIR/issue_72181_1.rs:17:12: 17:16, inferred_ty: Void +| 0: user_ty: Canonical { value: Ty(Void), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/issue_72181_1.rs:17:12: 17:16, inferred_ty: Void +| 1: user_ty: Canonical { value: Ty(Void), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/issue_72181_1.rs:17:12: 17:16, inferred_ty: Void | fn main() -> () { let mut _0: (); diff --git a/tests/mir-opt/issue_99325.main.built.after.32bit.mir b/tests/mir-opt/issue_99325.main.built.after.32bit.mir index c8039dc4735..0b0bac73e9f 100644 --- a/tests/mir-opt/issue_99325.main.built.after.32bit.mir +++ b/tests/mir-opt/issue_99325.main.built.after.32bit.mir @@ -1,8 +1,8 @@ // MIR for `main` after built | User Type Annotations -| 0: user_ty: Canonical { value: TypeOf(DefId(0:3 ~ issue_99325[d56d]::function_with_bytes), UserArgs { args: [&*b"AAAA"], user_self_ty: None }), max_universe: U0, variables: [] }, span: $DIR/issue_99325.rs:13:16: 13:46, inferred_ty: fn() -> &'static [u8] {function_with_bytes::<&*b"AAAA">} -| 1: user_ty: Canonical { value: TypeOf(DefId(0:3 ~ issue_99325[d56d]::function_with_bytes), UserArgs { args: [UnevaluatedConst { def: DefId(0:8 ~ issue_99325[d56d]::main::{constant#1}), args: [] }: &'static [u8; 4_usize]], user_self_ty: None }), max_universe: U0, variables: [] }, span: $DIR/issue_99325.rs:14:16: 14:68, inferred_ty: fn() -> &'static [u8] {function_with_bytes::<&*b"AAAA">} +| 0: user_ty: Canonical { value: TypeOf(DefId(0:3 ~ issue_99325[d56d]::function_with_bytes), UserArgs { args: [&*b"AAAA"], user_self_ty: None }), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/issue_99325.rs:13:16: 13:46, inferred_ty: fn() -> &'static [u8] {function_with_bytes::<&*b"AAAA">} +| 1: user_ty: Canonical { value: TypeOf(DefId(0:3 ~ issue_99325[d56d]::function_with_bytes), UserArgs { args: [UnevaluatedConst { def: DefId(0:8 ~ issue_99325[d56d]::main::{constant#1}), args: [] }: &'static [u8; 4_usize]], user_self_ty: None }), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/issue_99325.rs:14:16: 14:68, inferred_ty: fn() -> &'static [u8] {function_with_bytes::<&*b"AAAA">} | fn main() -> () { let mut _0: (); diff --git a/tests/mir-opt/issue_99325.main.built.after.64bit.mir b/tests/mir-opt/issue_99325.main.built.after.64bit.mir index c8039dc4735..0b0bac73e9f 100644 --- a/tests/mir-opt/issue_99325.main.built.after.64bit.mir +++ b/tests/mir-opt/issue_99325.main.built.after.64bit.mir @@ -1,8 +1,8 @@ // MIR for `main` after built | User Type Annotations -| 0: user_ty: Canonical { value: TypeOf(DefId(0:3 ~ issue_99325[d56d]::function_with_bytes), UserArgs { args: [&*b"AAAA"], user_self_ty: None }), max_universe: U0, variables: [] }, span: $DIR/issue_99325.rs:13:16: 13:46, inferred_ty: fn() -> &'static [u8] {function_with_bytes::<&*b"AAAA">} -| 1: user_ty: Canonical { value: TypeOf(DefId(0:3 ~ issue_99325[d56d]::function_with_bytes), UserArgs { args: [UnevaluatedConst { def: DefId(0:8 ~ issue_99325[d56d]::main::{constant#1}), args: [] }: &'static [u8; 4_usize]], user_self_ty: None }), max_universe: U0, variables: [] }, span: $DIR/issue_99325.rs:14:16: 14:68, inferred_ty: fn() -> &'static [u8] {function_with_bytes::<&*b"AAAA">} +| 0: user_ty: Canonical { value: TypeOf(DefId(0:3 ~ issue_99325[d56d]::function_with_bytes), UserArgs { args: [&*b"AAAA"], user_self_ty: None }), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/issue_99325.rs:13:16: 13:46, inferred_ty: fn() -> &'static [u8] {function_with_bytes::<&*b"AAAA">} +| 1: user_ty: Canonical { value: TypeOf(DefId(0:3 ~ issue_99325[d56d]::function_with_bytes), UserArgs { args: [UnevaluatedConst { def: DefId(0:8 ~ issue_99325[d56d]::main::{constant#1}), args: [] }: &'static [u8; 4_usize]], user_self_ty: None }), max_universe: U0, variables: [], defining_opaque_types: [] }, span: $DIR/issue_99325.rs:14:16: 14:68, inferred_ty: fn() -> &'static [u8] {function_with_bytes::<&*b"AAAA">} | fn main() -> () { let mut _0: (); diff --git a/tests/ui/impl-trait/different_where_bounds.rs b/tests/ui/impl-trait/different_where_bounds.rs new file mode 100644 index 00000000000..87ae6db2822 --- /dev/null +++ b/tests/ui/impl-trait/different_where_bounds.rs @@ -0,0 +1,27 @@ +//! This test checks that the param env canonicalization cache +//! does not end up with inconsistent values. + +//@ check-pass + +pub fn poison1() -> impl Sized +where + (): 'static, +{ +} +pub fn poison2() -> impl Sized +where + (): 'static, +{ + define_by_query((poison2, ())); +} +pub fn poison3() -> impl Sized +where + (): 'static, +{ +} + +trait Query {} +impl<Out, F: Fn() -> Out> Query for (F, Out) {} +fn define_by_query(_: impl Query) {} + +fn main() {} diff --git a/tests/ui/impl-trait/equality-in-canonical-query.clone.stderr b/tests/ui/impl-trait/equality-in-canonical-query.clone.stderr deleted file mode 100644 index e4c8aec3973..00000000000 --- a/tests/ui/impl-trait/equality-in-canonical-query.clone.stderr +++ /dev/null @@ -1,23 +0,0 @@ -note: no errors encountered even though delayed bugs were created - -note: those delayed bugs will now be shown as internal compiler errors - -error: internal compiler error: {OpaqueTypeKey { def_id: DefId(rpit::{opaque#0}), args: [] }: OpaqueTypeDecl { hidden_type: OpaqueHiddenType { span: no-location (#0), ty: Alias(Opaque, AliasTy { args: [], def_id: DefId(foo::{opaque#0}) }) } }} - | - = - - -error: internal compiler error: error performing ParamEnvAnd { param_env: ParamEnv { caller_bounds: [], reveal: UserFacing }, value: ProvePredicate { predicate: Binder { value: ProjectionPredicate(AliasTy { args: [FnDef(DefId(rpit), []), ()], def_id: DefId(ops::function::FnOnce::Output) }, Term::Ty(Alias(Opaque, AliasTy { args: [], def_id: DefId(foo::{opaque#0}) }))), bound_vars: [] } } } - --> $DIR/equality-in-canonical-query.rs:21:5 - | -LL | same_output(foo, rpit); - | ^^^^^^^^^^^^^^^^^^^^^^ - | - - --> $DIR/equality-in-canonical-query.rs:21:5 - | -LL | same_output(foo, rpit); - | ^^^^^^^^^^^^^^^^^^^^^^ - -query stack during panic: -end of query stack diff --git a/tests/ui/impl-trait/equality-in-canonical-query.rs b/tests/ui/impl-trait/equality-in-canonical-query.rs index 6a32f4bec76..2b8f6ce1b07 100644 --- a/tests/ui/impl-trait/equality-in-canonical-query.rs +++ b/tests/ui/impl-trait/equality-in-canonical-query.rs @@ -1,15 +1,6 @@ // issue: #116877 //@ revisions: sized clone -//@[sized] check-pass -//@[clone] known-bug: #108498 -//@[clone] failure-status: 101 -//@[clone] normalize-stderr-test: "DefId\(.*?\]::" -> "DefId(" -//@[clone] normalize-stderr-test: "(?m)note: we would appreciate a bug report.*\n\n" -> "" -//@[clone] normalize-stderr-test: "(?m)note: rustc.*running on.*\n\n" -> "" -//@[clone] normalize-stderr-test: "(?m)note: compiler flags.*\n\n" -> "" -//@[clone] normalize-stderr-test: "(?m)note: delayed at.*$" -> "" -//@[clone] normalize-stderr-test: "(?m)^ *\d+: .*\n" -> "" -//@[clone] normalize-stderr-test: "(?m)^ *at .*\n" -> "" +//@ check-pass #[cfg(sized)] fn rpit() -> impl Sized {} #[cfg(clone)] fn rpit() -> impl Clone {} diff --git a/tests/ui/impl-trait/nested-hkl-lifetime.rs b/tests/ui/impl-trait/nested-hkl-lifetime.rs new file mode 100644 index 00000000000..089ceca6777 --- /dev/null +++ b/tests/ui/impl-trait/nested-hkl-lifetime.rs @@ -0,0 +1,32 @@ +//@ check-pass + +use std::iter::FromIterator; + +struct DynamicAlt<P>(P); + +impl<P> FromIterator<P> for DynamicAlt<P> { + fn from_iter<T: IntoIterator<Item = P>>(_iter: T) -> Self { + loop {} + } +} + +fn owned_context<I, F>(_: F) -> impl FnMut(I) -> I { + |i| i +} + +trait Parser<I> {} + +impl<T, I> Parser<I> for T where T: FnMut(I) -> I {} + +fn alt<I, P: Parser<I>>(_: DynamicAlt<P>) -> impl FnMut(I) -> I { + |i| i +} + +fn rule_to_parser<'c>() -> impl Parser<&'c str> { + move |input| { + let v: Vec<()> = vec![]; + alt(v.iter().map(|()| owned_context(rule_to_parser())).collect::<DynamicAlt<_>>())(input) + } +} + +fn main() {} diff --git a/tests/ui/impl-trait/nested-rpit-hrtb.rs b/tests/ui/impl-trait/nested-rpit-hrtb.rs index a696e1710f0..9b18aceb4a7 100644 --- a/tests/ui/impl-trait/nested-rpit-hrtb.rs +++ b/tests/ui/impl-trait/nested-rpit-hrtb.rs @@ -44,7 +44,7 @@ fn one_hrtb_mention_fn_outlives<'b>() -> impl for<'a> Foo<'a, Assoc = impl Sized // This should resolve. fn one_hrtb_mention_fn_trait_param_uses<'b>() -> impl for<'a> Bar<'a, Assoc = impl Qux<'b>> {} -//~^ ERROR type annotations needed: cannot satisfy `for<'a> &'a (): Qux<'b>` +//~^ ERROR the trait bound `for<'a> &'a (): Qux<'b>` is not satisfied // This should resolve. fn one_hrtb_mention_fn_outlives_uses<'b>() -> impl for<'a> Bar<'a, Assoc = impl Sized + 'b> {} diff --git a/tests/ui/impl-trait/nested-rpit-hrtb.stderr b/tests/ui/impl-trait/nested-rpit-hrtb.stderr index 64f801ea685..2fa036f35fa 100644 --- a/tests/ui/impl-trait/nested-rpit-hrtb.stderr +++ b/tests/ui/impl-trait/nested-rpit-hrtb.stderr @@ -86,13 +86,12 @@ note: lifetime declared here LL | fn one_hrtb_trait_param_uses() -> impl for<'a> Bar<'a, Assoc = impl Qux<'a>> {} | ^^ -error[E0283]: type annotations needed: cannot satisfy `for<'a> &'a (): Qux<'b>` +error[E0277]: the trait bound `for<'a> &'a (): Qux<'b>` is not satisfied --> $DIR/nested-rpit-hrtb.rs:46:79 | LL | fn one_hrtb_mention_fn_trait_param_uses<'b>() -> impl for<'a> Bar<'a, Assoc = impl Qux<'b>> {} - | ^^^^^^^^^^^^ + | ^^^^^^^^^^^^ the trait `for<'a> Qux<'b>` is not implemented for `&'a ()` | - = note: cannot satisfy `for<'a> &'a (): Qux<'b>` = help: the trait `Qux<'_>` is implemented for `()` = help: for that trait implementation, expected `()`, found `&'a ()` @@ -125,5 +124,5 @@ LL | fn two_htrb_outlives_uses() -> impl for<'a> Bar<'a, Assoc = impl for<'b> Si error: aborting due to 11 previous errors -Some errors have detailed explanations: E0261, E0277, E0283, E0657. +Some errors have detailed explanations: E0261, E0277, E0657. For more information about an error, try `rustc --explain E0261`. diff --git a/tests/ui/inference/issue-80409.no-compat.stderr b/tests/ui/inference/issue-80409.no-compat.stderr index 523ca229b06..c772225be75 100644 --- a/tests/ui/inference/issue-80409.no-compat.stderr +++ b/tests/ui/inference/issue-80409.no-compat.stderr @@ -1,4 +1,4 @@ -error: internal compiler error: error performing ParamEnvAnd { param_env: ParamEnv { caller_bounds: [], reveal: UserFacing }, value: ImpliedOutlivesBounds { ty: &'?2 mut StateContext<'?3, usize> } } +error: internal compiler error: error performing operation: fully_perform --> $DIR/issue-80409.rs:49:30 | LL | builder.state().on_entry(|_| {}); diff --git a/tests/ui/type-alias-impl-trait/issue-53398-cyclic-types.rs b/tests/ui/type-alias-impl-trait/issue-53398-cyclic-types.rs deleted file mode 100644 index ae463b6ef5b..00000000000 --- a/tests/ui/type-alias-impl-trait/issue-53398-cyclic-types.rs +++ /dev/null @@ -1,11 +0,0 @@ -#![feature(type_alias_impl_trait)] - -//@ check-pass - -type Foo = impl Fn() -> Foo; - -fn foo() -> Foo { - foo -} - -fn main() {} diff --git a/tests/ui/type-alias-impl-trait/rpit_tait_equality_in_canonical_query.current.stderr b/tests/ui/type-alias-impl-trait/rpit_tait_equality_in_canonical_query.current.stderr deleted file mode 100644 index 1c36fda4ae1..00000000000 --- a/tests/ui/type-alias-impl-trait/rpit_tait_equality_in_canonical_query.current.stderr +++ /dev/null @@ -1,23 +0,0 @@ -note: no errors encountered even though delayed bugs were created - -note: those delayed bugs will now be shown as internal compiler errors - -error: internal compiler error: {OpaqueTypeKey { def_id: DefId(get_rpit::{opaque#0}), args: [] }: OpaqueTypeDecl { hidden_type: OpaqueHiddenType { span: no-location (#0), ty: Alias(Opaque, AliasTy { args: [], def_id: DefId(Opaque::{opaque#0}) }) } }} - | - = - - -error: internal compiler error: error performing ParamEnvAnd { param_env: ParamEnv { caller_bounds: [], reveal: UserFacing }, value: ProvePredicate { predicate: Binder { value: ProjectionPredicate(AliasTy { args: [FnDef(DefId(get_rpit), []), ()], def_id: DefId(ops::function::FnOnce::Output) }, Term::Ty(Alias(Opaque, AliasTy { args: [], def_id: DefId(Opaque::{opaque#0}) }))), bound_vars: [] } } } - --> $DIR/rpit_tait_equality_in_canonical_query.rs:32:5 - | -LL | query(get_rpit); - | ^^^^^^^^^^^^^^^ - | - - --> $DIR/rpit_tait_equality_in_canonical_query.rs:32:5 - | -LL | query(get_rpit); - | ^^^^^^^^^^^^^^^ - -query stack during panic: -end of query stack diff --git a/tests/ui/type-alias-impl-trait/rpit_tait_equality_in_canonical_query.rs b/tests/ui/type-alias-impl-trait/rpit_tait_equality_in_canonical_query.rs index 7524cebf9e6..6f50703aca2 100644 --- a/tests/ui/type-alias-impl-trait/rpit_tait_equality_in_canonical_query.rs +++ b/tests/ui/type-alias-impl-trait/rpit_tait_equality_in_canonical_query.rs @@ -8,17 +8,7 @@ //@ revisions: current next //@ ignore-compare-mode-next-solver (explicit revisions) //@[next] compile-flags: -Znext-solver -//@[next] check-pass - -//@[current] known-bug: #108498 -//@[current] failure-status: 101 -//@[current] normalize-stderr-test: "DefId\(.*?\]::" -> "DefId(" -//@[current] normalize-stderr-test: "(?m)note: we would appreciate a bug report.*\n\n" -> "" -//@[current] normalize-stderr-test: "(?m)note: rustc.*running on.*\n\n" -> "" -//@[current] normalize-stderr-test: "(?m)note: compiler flags.*\n\n" -> "" -//@[current] normalize-stderr-test: "(?m)note: delayed at.*$" -> "" -//@[current] normalize-stderr-test: "(?m)^ *\d+: .*\n" -> "" -//@[current] normalize-stderr-test: "(?m)^ *at .*\n" -> "" +//@ check-pass #![feature(type_alias_impl_trait)] diff --git a/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error.rs b/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-1.rs index e5e7fb677ed..19986247d40 100644 --- a/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error.rs +++ b/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-1.rs @@ -1,12 +1,10 @@ #![feature(type_alias_impl_trait)] +//@ known-bug: #109268 type Foo = impl Fn() -> Foo; -//~^ ERROR: unconstrained opaque type fn crash(x: Foo) -> Foo { x } -fn main() { - -} +fn main() {} diff --git a/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-1.stderr b/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-1.stderr new file mode 100644 index 00000000000..ee8922b673e --- /dev/null +++ b/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-1.stderr @@ -0,0 +1,9 @@ +error[E0275]: overflow evaluating the requirement `<Foo as FnOnce<()>>::Output == Foo` + --> $DIR/type-alias-impl-trait-with-cycle-error-1.rs:6:21 + | +LL | fn crash(x: Foo) -> Foo { + | ^^^ + +error: aborting due to 1 previous error + +For more information about this error, try `rustc --explain E0275`. diff --git a/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error2.rs b/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-2.rs index 7c7a1b405bc..761cc83af51 100644 --- a/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error2.rs +++ b/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-2.rs @@ -1,11 +1,11 @@ #![feature(type_alias_impl_trait)] +//@ known-bug: #109268 pub trait Bar<T> { type Item; } type Foo = impl Bar<Foo, Item = Foo>; -//~^ ERROR: unconstrained opaque type fn crash(x: Foo) -> Foo { x diff --git a/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-2.stderr b/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-2.stderr new file mode 100644 index 00000000000..3d0f1d30ca2 --- /dev/null +++ b/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-2.stderr @@ -0,0 +1,9 @@ +error[E0275]: overflow evaluating the requirement `<Foo as Bar<Foo>>::Item == Foo` + --> $DIR/type-alias-impl-trait-with-cycle-error-2.rs:10:21 + | +LL | fn crash(x: Foo) -> Foo { + | ^^^ + +error: aborting due to 1 previous error + +For more information about this error, try `rustc --explain E0275`. diff --git a/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-3.rs b/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-3.rs new file mode 100644 index 00000000000..52942afd639 --- /dev/null +++ b/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-3.rs @@ -0,0 +1,10 @@ +#![feature(type_alias_impl_trait)] +//@ known-bug: #109268 + +type Foo<'a> = impl Fn() -> Foo<'a>; + +fn crash<'a>(_: &'a (), x: Foo<'a>) -> Foo<'a> { + x +} + +fn main() {} diff --git a/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-3.stderr b/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-3.stderr new file mode 100644 index 00000000000..675689bac42 --- /dev/null +++ b/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-3.stderr @@ -0,0 +1,9 @@ +error[E0275]: overflow evaluating the requirement `<Foo<'_> as FnOnce<()>>::Output == Foo<'a>` + --> $DIR/type-alias-impl-trait-with-cycle-error-3.rs:6:40 + | +LL | fn crash<'a>(_: &'a (), x: Foo<'a>) -> Foo<'a> { + | ^^^^^^^ + +error: aborting due to 1 previous error + +For more information about this error, try `rustc --explain E0275`. diff --git a/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-4.rs b/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-4.rs new file mode 100644 index 00000000000..e866b45a8e6 --- /dev/null +++ b/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-4.rs @@ -0,0 +1,16 @@ +#![feature(type_alias_impl_trait)] +//@ known-bug: trait-system-refactor-initiative#43 + +trait Id { + type Assoc; +} +impl<T> Id for T { + type Assoc = T; +} + +type Ty +where + Ty: Id<Assoc = Ty>, += impl Sized; +fn define() -> Ty {} +fn main() {} diff --git a/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-4.stderr b/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-4.stderr new file mode 100644 index 00000000000..aedb78bf5e7 --- /dev/null +++ b/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error-4.stderr @@ -0,0 +1,39 @@ +error[E0275]: overflow evaluating the requirement `Ty: Id` + --> $DIR/type-alias-impl-trait-with-cycle-error-4.rs:11:1 + | +LL | type Ty + | ^^^^^^^ + | +note: required by a bound on the type alias `Ty` + --> $DIR/type-alias-impl-trait-with-cycle-error-4.rs:13:9 + | +LL | Ty: Id<Assoc = Ty>, + | ^^^^^^^^^^^^^^ required by this bound + +error[E0275]: overflow evaluating the requirement `Ty: Id` + --> $DIR/type-alias-impl-trait-with-cycle-error-4.rs:15:19 + | +LL | fn define() -> Ty {} + | ^^ + | +note: required by a bound on the type alias `Ty` + --> $DIR/type-alias-impl-trait-with-cycle-error-4.rs:13:9 + | +LL | Ty: Id<Assoc = Ty>, + | ^^^^^^^^^^^^^^ required by this bound + +error[E0275]: overflow evaluating the requirement `Ty: Id` + --> $DIR/type-alias-impl-trait-with-cycle-error-4.rs:15:16 + | +LL | fn define() -> Ty {} + | ^^ + | +note: required by a bound on the type alias `Ty` + --> $DIR/type-alias-impl-trait-with-cycle-error-4.rs:13:9 + | +LL | Ty: Id<Assoc = Ty>, + | ^^^^^^^^^^^^^^ required by this bound + +error: aborting due to 3 previous errors + +For more information about this error, try `rustc --explain E0275`. diff --git a/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error.stderr b/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error.stderr deleted file mode 100644 index 3d43fbe0dbc..00000000000 --- a/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error.stderr +++ /dev/null @@ -1,10 +0,0 @@ -error: unconstrained opaque type - --> $DIR/type-alias-impl-trait-with-cycle-error.rs:3:12 - | -LL | type Foo = impl Fn() -> Foo; - | ^^^^^^^^^^^^^^^^ - | - = note: `Foo` must be used in combination with a concrete type within the same module - -error: aborting due to 1 previous error - diff --git a/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error2.stderr b/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error2.stderr deleted file mode 100644 index e2dc887989b..00000000000 --- a/tests/ui/type-alias-impl-trait/type-alias-impl-trait-with-cycle-error2.stderr +++ /dev/null @@ -1,10 +0,0 @@ -error: unconstrained opaque type - --> $DIR/type-alias-impl-trait-with-cycle-error2.rs:7:12 - | -LL | type Foo = impl Bar<Foo, Item = Foo>; - | ^^^^^^^^^^^^^^^^^^^^^^^^^ - | - = note: `Foo` must be used in combination with a concrete type within the same module - -error: aborting due to 1 previous error - |