diff options
Diffstat (limited to 'compiler')
| -rw-r--r-- | compiler/rustc_borrowck/src/lib.rs | 147 | ||||
| -rw-r--r-- | compiler/rustc_borrowck/src/nll.rs | 21 | ||||
| -rw-r--r-- | compiler/rustc_borrowck/src/polonius/dump.rs | 2 | ||||
| -rw-r--r-- | compiler/rustc_borrowck/src/region_infer/mod.rs | 43 | ||||
| -rw-r--r-- | compiler/rustc_borrowck/src/type_check/constraint_conversion.rs | 20 | ||||
| -rw-r--r-- | compiler/rustc_borrowck/src/type_check/free_region_relations.rs | 4 | ||||
| -rw-r--r-- | compiler/rustc_borrowck/src/type_check/mod.rs | 13 | ||||
| -rw-r--r-- | compiler/rustc_borrowck/src/universal_regions.rs | 4 | ||||
| -rw-r--r-- | compiler/rustc_trait_selection/messages.ftl | 4 | ||||
| -rw-r--r-- | compiler/rustc_trait_selection/src/errors.rs | 2 | ||||
| -rw-r--r-- | compiler/rustc_trait_selection/src/opaque_types.rs | 2 |
11 files changed, 108 insertions, 154 deletions
diff --git a/compiler/rustc_borrowck/src/lib.rs b/compiler/rustc_borrowck/src/lib.rs index 64ad1c96856..1bc69abe6f9 100644 --- a/compiler/rustc_borrowck/src/lib.rs +++ b/compiler/rustc_borrowck/src/lib.rs @@ -22,6 +22,7 @@ use std::cell::RefCell; use std::marker::PhantomData; use std::ops::{ControlFlow, Deref}; +use borrow_set::LocalsStateAtExit; use root_cx::BorrowCheckRootCtxt; use rustc_abi::FieldIdx; use rustc_data_structures::fx::{FxIndexMap, FxIndexSet}; @@ -304,33 +305,13 @@ fn do_mir_borrowck<'tcx>( root_cx.set_tainted_by_errors(e); } - let mut local_names = IndexVec::from_elem(None, &input_body.local_decls); - for var_debug_info in &input_body.var_debug_info { - if let VarDebugInfoContents::Place(place) = var_debug_info.value { - if let Some(local) = place.as_local() { - if let Some(prev_name) = local_names[local] - && var_debug_info.name != prev_name - { - span_bug!( - var_debug_info.source_info.span, - "local {:?} has many names (`{}` vs `{}`)", - local, - prev_name, - var_debug_info.name - ); - } - local_names[local] = Some(var_debug_info.name); - } - } - } - // Replace all regions with fresh inference variables. This // requires first making our own copy of the MIR. This copy will // be modified (in place) to contain non-lexical lifetimes. It // will have a lifetime tied to the inference context. let mut body_owned = input_body.clone(); let mut promoted = input_promoted.to_owned(); - let free_regions = nll::replace_regions_in_mir(&infcx, &mut body_owned, &mut promoted); + let universal_regions = nll::replace_regions_in_mir(&infcx, &mut body_owned, &mut promoted); let body = &body_owned; // no further changes let location_table = PoloniusLocationTable::new(body); @@ -355,7 +336,7 @@ fn do_mir_borrowck<'tcx>( } = nll::compute_regions( root_cx, &infcx, - free_regions, + universal_regions, body, &promoted, &location_table, @@ -368,24 +349,23 @@ fn do_mir_borrowck<'tcx>( // Dump MIR results into a file, if that is enabled. This lets us // write unit-tests, as well as helping with debugging. nll::dump_nll_mir(&infcx, body, ®ioncx, &opt_closure_req, &borrow_set); + polonius::dump_polonius_mir( + &infcx, + body, + ®ioncx, + &opt_closure_req, + &borrow_set, + polonius_diagnostics.as_ref(), + ); // We also have a `#[rustc_regions]` annotation that causes us to dump // information. - let diags_buffer = &mut BorrowckDiagnosticsBuffer::default(); - nll::dump_annotation(&infcx, body, ®ioncx, &opt_closure_req, diags_buffer); - - let movable_coroutine = - // The first argument is the coroutine type passed by value - if let Some(local) = body.local_decls.raw.get(1) - // Get the interior types and args which typeck computed - && let ty::Coroutine(def_id, _) = *local.ty.kind() - && tcx.coroutine_movability(def_id) == hir::Movability::Movable -{ - true -} else { - false -}; + nll::dump_annotation(&infcx, body, ®ioncx, &opt_closure_req); + let movable_coroutine = body.coroutine.is_some() + && tcx.coroutine_movability(def.to_def_id()) == hir::Movability::Movable; + + let diags_buffer = &mut BorrowckDiagnosticsBuffer::default(); // While promoteds should mostly be correct by construction, we need to check them for // invalid moves to detect moving out of arrays:`struct S; fn main() { &([S][0]); }`. for promoted_body in &promoted { @@ -403,7 +383,6 @@ fn do_mir_borrowck<'tcx>( location_table: &location_table, movable_coroutine, fn_self_span_reported: Default::default(), - locals_are_invalidated_at_exit, access_place_error_reported: Default::default(), reservation_error_reported: Default::default(), uninitialized_error_reported: Default::default(), @@ -435,6 +414,26 @@ fn do_mir_borrowck<'tcx>( promoted_mbcx.report_move_errors(); } + let mut local_names = IndexVec::from_elem(None, &body.local_decls); + for var_debug_info in &body.var_debug_info { + if let VarDebugInfoContents::Place(place) = var_debug_info.value { + if let Some(local) = place.as_local() { + if let Some(prev_name) = local_names[local] + && var_debug_info.name != prev_name + { + span_bug!( + var_debug_info.source_info.span, + "local {:?} has many names (`{}` vs `{}`)", + local, + prev_name, + var_debug_info.name + ); + } + local_names[local] = Some(var_debug_info.name); + } + } + } + let mut mbcx = MirBorrowckCtxt { root_cx, infcx: &infcx, @@ -442,7 +441,6 @@ fn do_mir_borrowck<'tcx>( move_data: &move_data, location_table: &location_table, movable_coroutine, - locals_are_invalidated_at_exit, fn_self_span_reported: Default::default(), access_place_error_reported: Default::default(), reservation_error_reported: Default::default(), @@ -455,9 +453,9 @@ fn do_mir_borrowck<'tcx>( local_names, region_names: RefCell::default(), next_region_name: RefCell::new(1), - polonius_output, move_errors: Vec::new(), diags_buffer, + polonius_output: polonius_output.as_deref(), polonius_diagnostics: polonius_diagnostics.as_ref(), }; @@ -474,16 +472,6 @@ fn do_mir_borrowck<'tcx>( mbcx.report_move_errors(); - // If requested, dump polonius MIR. - polonius::dump_polonius_mir( - &infcx, - body, - ®ioncx, - &borrow_set, - polonius_diagnostics.as_ref(), - &opt_closure_req, - ); - // For each non-user used mutable variable, check if it's been assigned from // a user-declared local. If so, then put that local into the used_mut set. // Note that this set is expected to be small - only upvars from closures @@ -514,7 +502,6 @@ fn do_mir_borrowck<'tcx>( }; let body_with_facts = if consumer_options.is_some() { - let output_facts = mbcx.polonius_output; Some(Box::new(BodyWithBorrowckFacts { body: body_owned, promoted, @@ -522,7 +509,7 @@ fn do_mir_borrowck<'tcx>( region_inference_context: regioncx, location_table: polonius_input.as_ref().map(|_| location_table), input_facts: polonius_input, - output_facts, + output_facts: polonius_output, })) } else { None @@ -655,13 +642,6 @@ struct MirBorrowckCtxt<'a, 'infcx, 'tcx> { location_table: &'a PoloniusLocationTable, movable_coroutine: bool, - /// This keeps track of whether local variables are free-ed when the function - /// exits even without a `StorageDead`, which appears to be the case for - /// constants. - /// - /// I'm not sure this is the right approach - @eddyb could you try and - /// figure this out? - locals_are_invalidated_at_exit: bool, /// This field keeps track of when borrow errors are reported in the access_place function /// so that there is no duplicate reporting. This field cannot also be used for the conflicting /// borrow errors that is handled by the `reservation_error_reported` field as the inclusion @@ -709,12 +689,11 @@ struct MirBorrowckCtxt<'a, 'infcx, 'tcx> { /// The counter for generating new region names. next_region_name: RefCell<usize>, - /// Results of Polonius analysis. - polonius_output: Option<Box<PoloniusOutput>>, - diags_buffer: &'a mut BorrowckDiagnosticsBuffer<'infcx, 'tcx>, move_errors: Vec<MoveError<'tcx>>, + /// Results of Polonius analysis. + polonius_output: Option<&'a PoloniusOutput>, /// When using `-Zpolonius=next`: the data used to compute errors and diagnostics. polonius_diagnostics: Option<&'a PoloniusDiagnosticsContext>, } @@ -938,13 +917,20 @@ impl<'a, 'tcx> ResultsVisitor<'a, 'tcx, Borrowck<'a, 'tcx>> for MirBorrowckCtxt< | TerminatorKind::Return | TerminatorKind::TailCall { .. } | TerminatorKind::CoroutineDrop => { - // Returning from the function implicitly kills storage for all locals and statics. - // Often, the storage will already have been killed by an explicit - // StorageDead, but we don't always emit those (notably on unwind paths), - // so this "extra check" serves as a kind of backup. - for i in state.borrows.iter() { - let borrow = &self.borrow_set[i]; - self.check_for_invalidation_at_exit(loc, borrow, span); + match self.borrow_set.locals_state_at_exit() { + LocalsStateAtExit::AllAreInvalidated => { + // Returning from the function implicitly kills storage for all locals and statics. + // Often, the storage will already have been killed by an explicit + // StorageDead, but we don't always emit those (notably on unwind paths), + // so this "extra check" serves as a kind of backup. + for i in state.borrows.iter() { + let borrow = &self.borrow_set[i]; + self.check_for_invalidation_at_exit(loc, borrow, span); + } + } + // If we do not implicitly invalidate all locals on exit, + // we check for conflicts when dropping or moving this local. + LocalsStateAtExit::SomeAreInvalidated { has_storage_dead_or_moved: _ } => {} } } @@ -1716,22 +1702,15 @@ impl<'a, 'tcx> MirBorrowckCtxt<'a, '_, 'tcx> { // we'll have a memory leak) and assume that all statics have a destructor. // // FIXME: allow thread-locals to borrow other thread locals? - - let (might_be_alive, will_be_dropped) = - if self.body.local_decls[root_place.local].is_ref_to_thread_local() { - // Thread-locals might be dropped after the function exits - // We have to dereference the outer reference because - // borrows don't conflict behind shared references. - root_place.projection = TyCtxtConsts::DEREF_PROJECTION; - (true, true) - } else { - (false, self.locals_are_invalidated_at_exit) - }; - - if !will_be_dropped { - debug!("place_is_invalidated_at_exit({:?}) - won't be dropped", place); - return; - } + let might_be_alive = if self.body.local_decls[root_place.local].is_ref_to_thread_local() { + // Thread-locals might be dropped after the function exits + // We have to dereference the outer reference because + // borrows don't conflict behind shared references. + root_place.projection = TyCtxtConsts::DEREF_PROJECTION; + true + } else { + false + }; let sd = if might_be_alive { Deep } else { Shallow(None) }; diff --git a/compiler/rustc_borrowck/src/nll.rs b/compiler/rustc_borrowck/src/nll.rs index 8a2a34f207a..fe899bb054f 100644 --- a/compiler/rustc_borrowck/src/nll.rs +++ b/compiler/rustc_borrowck/src/nll.rs @@ -21,7 +21,7 @@ use tracing::{debug, instrument}; use crate::borrow_set::BorrowSet; use crate::consumers::ConsumerOptions; -use crate::diagnostics::{BorrowckDiagnosticsBuffer, RegionErrors}; +use crate::diagnostics::RegionErrors; use crate::polonius::PoloniusDiagnosticsContext; use crate::polonius::legacy::{ PoloniusFacts, PoloniusFactsExt, PoloniusLocationTable, PoloniusOutput, @@ -117,11 +117,6 @@ pub(crate) fn compute_regions<'a, 'tcx>( Rc::clone(&location_map), ); - // Create the region inference context, taking ownership of the - // region inference data that was contained in `infcx`, and the - // base constraints generated by the type-check. - let var_infos = infcx.get_region_var_infos(); - // If requested, emit legacy polonius facts. polonius::legacy::emit_facts( &mut polonius_facts, @@ -134,13 +129,8 @@ pub(crate) fn compute_regions<'a, 'tcx>( &constraints, ); - let mut regioncx = RegionInferenceContext::new( - infcx, - var_infos, - constraints, - universal_region_relations, - location_map, - ); + let mut regioncx = + RegionInferenceContext::new(infcx, constraints, universal_region_relations, location_map); // If requested for `-Zpolonius=next`, convert NLL constraints to localized outlives constraints // and use them to compute loan liveness. @@ -297,7 +287,6 @@ pub(super) fn dump_annotation<'tcx, 'infcx>( body: &Body<'tcx>, regioncx: &RegionInferenceContext<'tcx>, closure_region_requirements: &Option<ClosureRegionRequirements<'tcx>>, - diagnostics_buffer: &mut BorrowckDiagnosticsBuffer<'infcx, 'tcx>, ) { let tcx = infcx.tcx; let base_def_id = tcx.typeck_root_def_id(body.source.def_id()); @@ -335,13 +324,11 @@ pub(super) fn dump_annotation<'tcx, 'infcx>( } else { let mut err = infcx.dcx().struct_span_note(def_span, "no external requirements"); regioncx.annotate(tcx, &mut err); - err }; // FIXME(@lcnr): We currently don't dump the inferred hidden types here. - - diagnostics_buffer.buffer_non_error(err); + err.emit(); } fn for_each_region_constraint<'tcx>( diff --git a/compiler/rustc_borrowck/src/polonius/dump.rs b/compiler/rustc_borrowck/src/polonius/dump.rs index eb53a98832c..6a943e19208 100644 --- a/compiler/rustc_borrowck/src/polonius/dump.rs +++ b/compiler/rustc_borrowck/src/polonius/dump.rs @@ -24,9 +24,9 @@ pub(crate) fn dump_polonius_mir<'tcx>( infcx: &BorrowckInferCtxt<'tcx>, body: &Body<'tcx>, regioncx: &RegionInferenceContext<'tcx>, + closure_region_requirements: &Option<ClosureRegionRequirements<'tcx>>, borrow_set: &BorrowSet<'tcx>, polonius_diagnostics: Option<&PoloniusDiagnosticsContext>, - closure_region_requirements: &Option<ClosureRegionRequirements<'tcx>>, ) { let tcx = infcx.tcx; if !tcx.sess.opts.unstable_opts.polonius.is_next_enabled() { diff --git a/compiler/rustc_borrowck/src/region_infer/mod.rs b/compiler/rustc_borrowck/src/region_infer/mod.rs index 569c46e6403..c82c7341f02 100644 --- a/compiler/rustc_borrowck/src/region_infer/mod.rs +++ b/compiler/rustc_borrowck/src/region_infer/mod.rs @@ -9,7 +9,7 @@ use rustc_errors::Diag; use rustc_hir::def_id::CRATE_DEF_ID; use rustc_index::IndexVec; use rustc_infer::infer::outlives::test_type_match; -use rustc_infer::infer::region_constraints::{GenericKind, VarInfos, VerifyBound, VerifyIfEq}; +use rustc_infer::infer::region_constraints::{GenericKind, VerifyBound, VerifyIfEq}; use rustc_infer::infer::{InferCtxt, NllRegionVariableOrigin, RegionVariableOrigin}; use rustc_middle::bug; use rustc_middle::mir::{ @@ -145,7 +145,7 @@ pub struct RegionInferenceContext<'tcx> { /// variables are identified by their index (`RegionVid`). The /// definition contains information about where the region came /// from as well as its final inferred value. - pub(crate) definitions: IndexVec<RegionVid, RegionDefinition<'tcx>>, + pub(crate) definitions: Frozen<IndexVec<RegionVid, RegionDefinition<'tcx>>>, /// The liveness constraints added to each region. For most /// regions, these start out empty and steadily grow, though for @@ -385,6 +385,26 @@ fn sccs_info<'tcx>(infcx: &BorrowckInferCtxt<'tcx>, sccs: &ConstraintSccs) { debug!("SCC edges {:#?}", scc_node_to_edges); } +fn create_definitions<'tcx>( + infcx: &BorrowckInferCtxt<'tcx>, + universal_regions: &UniversalRegions<'tcx>, +) -> Frozen<IndexVec<RegionVid, RegionDefinition<'tcx>>> { + // Create a RegionDefinition for each inference variable. + let mut definitions: IndexVec<_, _> = infcx + .get_region_var_infos() + .iter() + .map(|info| RegionDefinition::new(info.universe, info.origin)) + .collect(); + + // Add the external name for all universal regions. + for (external_name, variable) in universal_regions.named_universal_regions_iter() { + debug!("region {variable:?} has external name {external_name:?}"); + definitions[variable].external_name = Some(external_name); + } + + Frozen::freeze(definitions) +} + impl<'tcx> RegionInferenceContext<'tcx> { /// Creates a new region inference context with a total of /// `num_region_variables` valid inference variables; the first N @@ -395,7 +415,6 @@ impl<'tcx> RegionInferenceContext<'tcx> { /// of constraints produced by the MIR type check. pub(crate) fn new( infcx: &BorrowckInferCtxt<'tcx>, - var_infos: VarInfos, constraints: MirTypeckRegionConstraints<'tcx>, universal_region_relations: Frozen<UniversalRegionRelations<'tcx>>, location_map: Rc<DenseLocationMap>, @@ -426,11 +445,7 @@ impl<'tcx> RegionInferenceContext<'tcx> { infcx.set_tainted_by_errors(guar); } - // Create a RegionDefinition for each inference variable. - let definitions: IndexVec<_, _> = var_infos - .iter() - .map(|info| RegionDefinition::new(info.universe, info.origin)) - .collect(); + let definitions = create_definitions(infcx, &universal_regions); let constraint_sccs = outlives_constraints.add_outlives_static(&universal_regions, &definitions); @@ -526,18 +541,6 @@ impl<'tcx> RegionInferenceContext<'tcx> { /// means that the `R1: !1` constraint here will cause /// `R1` to become `'static`. fn init_free_and_bound_regions(&mut self) { - // Update the names (if any) - // This iterator has unstable order but we collect it all into an IndexVec - for (external_name, variable) in - self.universal_region_relations.universal_regions.named_universal_regions_iter() - { - debug!( - "init_free_and_bound_regions: region {:?} has external name {:?}", - variable, external_name - ); - self.definitions[variable].external_name = Some(external_name); - } - for variable in self.definitions.indices() { let scc = self.constraint_sccs.scc(variable); diff --git a/compiler/rustc_borrowck/src/type_check/constraint_conversion.rs b/compiler/rustc_borrowck/src/type_check/constraint_conversion.rs index ccb257ae093..57516565147 100644 --- a/compiler/rustc_borrowck/src/type_check/constraint_conversion.rs +++ b/compiler/rustc_borrowck/src/type_check/constraint_conversion.rs @@ -21,7 +21,6 @@ use crate::{ClosureOutlivesSubject, ClosureRegionRequirements, ConstraintCategor pub(crate) struct ConstraintConversion<'a, 'tcx> { infcx: &'a InferCtxt<'tcx>, - tcx: TyCtxt<'tcx>, universal_regions: &'a UniversalRegions<'tcx>, /// Each RBP `GK: 'a` is assumed to be true. These encode /// relationships like `T: 'a` that are added via implicit bounds @@ -34,7 +33,6 @@ pub(crate) struct ConstraintConversion<'a, 'tcx> { /// logic expecting to see (e.g.) `ReStatic`, and if we supplied /// our special inference variable there, we would mess that up. region_bound_pairs: &'a RegionBoundPairs<'tcx>, - implicit_region_bound: ty::Region<'tcx>, param_env: ty::ParamEnv<'tcx>, known_type_outlives_obligations: &'a [ty::PolyTypeOutlivesPredicate<'tcx>], locations: Locations, @@ -49,7 +47,6 @@ impl<'a, 'tcx> ConstraintConversion<'a, 'tcx> { infcx: &'a InferCtxt<'tcx>, universal_regions: &'a UniversalRegions<'tcx>, region_bound_pairs: &'a RegionBoundPairs<'tcx>, - implicit_region_bound: ty::Region<'tcx>, param_env: ty::ParamEnv<'tcx>, known_type_outlives_obligations: &'a [ty::PolyTypeOutlivesPredicate<'tcx>], locations: Locations, @@ -59,10 +56,8 @@ impl<'a, 'tcx> ConstraintConversion<'a, 'tcx> { ) -> Self { Self { infcx, - tcx: infcx.tcx, universal_regions, region_bound_pairs, - implicit_region_bound, param_env, known_type_outlives_obligations, locations, @@ -96,7 +91,7 @@ impl<'a, 'tcx> ConstraintConversion<'a, 'tcx> { // into a vector. These are the regions that we will be // relating to one another. let closure_mapping = &UniversalRegions::closure_mapping( - self.tcx, + self.infcx.tcx, closure_args, closure_requirements.num_external_vids, closure_def_id, @@ -111,7 +106,7 @@ impl<'a, 'tcx> ConstraintConversion<'a, 'tcx> { let subject = match outlives_requirement.subject { ClosureOutlivesSubject::Region(re) => closure_mapping[re].into(), ClosureOutlivesSubject::Ty(subject_ty) => { - subject_ty.instantiate(self.tcx, |vid| closure_mapping[vid]).into() + subject_ty.instantiate(self.infcx.tcx, |vid| closure_mapping[vid]).into() } }; @@ -127,14 +122,14 @@ impl<'a, 'tcx> ConstraintConversion<'a, 'tcx> { predicate: ty::OutlivesPredicate<'tcx, ty::GenericArg<'tcx>>, constraint_category: ConstraintCategory<'tcx>, ) { + let tcx = self.infcx.tcx; debug!("generate: constraints at: {:#?}", self.locations); // Extract out various useful fields we'll need below. let ConstraintConversion { - tcx, infcx, + universal_regions, region_bound_pairs, - implicit_region_bound, known_type_outlives_obligations, .. } = *self; @@ -145,7 +140,7 @@ impl<'a, 'tcx> ConstraintConversion<'a, 'tcx> { break; } - if !self.tcx.recursion_limit().value_within_limit(iteration) { + if !tcx.recursion_limit().value_within_limit(iteration) { bug!( "FIXME(-Znext-solver): Overflowed when processing region obligations: {outlives_predicates:#?}" ); @@ -170,10 +165,11 @@ impl<'a, 'tcx> ConstraintConversion<'a, 'tcx> { ); } + let implicit_region_bound = + ty::Region::new_var(tcx, universal_regions.implicit_region_bound()); // we don't actually use this for anything, but // the `TypeOutlives` code needs an origin. let origin = infer::RelateParamBound(self.span, t1, None); - TypeOutlives::new( &mut *self, tcx, @@ -205,7 +201,7 @@ impl<'a, 'tcx> ConstraintConversion<'a, 'tcx> { /// are dealt with during trait solving. fn replace_placeholders_with_nll<T: TypeFoldable<TyCtxt<'tcx>>>(&mut self, value: T) -> T { if value.has_placeholders() { - fold_regions(self.tcx, value, |r, _| match r.kind() { + fold_regions(self.infcx.tcx, value, |r, _| match r.kind() { ty::RePlaceholder(placeholder) => { self.constraints.placeholder_region(self.infcx, placeholder) } diff --git a/compiler/rustc_borrowck/src/type_check/free_region_relations.rs b/compiler/rustc_borrowck/src/type_check/free_region_relations.rs index eaac633b512..536a27763d2 100644 --- a/compiler/rustc_borrowck/src/type_check/free_region_relations.rs +++ b/compiler/rustc_borrowck/src/type_check/free_region_relations.rs @@ -49,14 +49,12 @@ pub(crate) struct CreateResult<'tcx> { pub(crate) fn create<'tcx>( infcx: &InferCtxt<'tcx>, param_env: ty::ParamEnv<'tcx>, - implicit_region_bound: ty::Region<'tcx>, universal_regions: UniversalRegions<'tcx>, constraints: &mut MirTypeckRegionConstraints<'tcx>, ) -> CreateResult<'tcx> { UniversalRegionRelationsBuilder { infcx, param_env, - implicit_region_bound, constraints, universal_regions, region_bound_pairs: Default::default(), @@ -181,7 +179,6 @@ struct UniversalRegionRelationsBuilder<'a, 'tcx> { infcx: &'a InferCtxt<'tcx>, param_env: ty::ParamEnv<'tcx>, universal_regions: UniversalRegions<'tcx>, - implicit_region_bound: ty::Region<'tcx>, constraints: &'a mut MirTypeckRegionConstraints<'tcx>, // outputs: @@ -320,7 +317,6 @@ impl<'tcx> UniversalRegionRelationsBuilder<'_, 'tcx> { self.infcx, &self.universal_regions, &self.region_bound_pairs, - self.implicit_region_bound, param_env, &known_type_outlives_obligations, Locations::All(span), diff --git a/compiler/rustc_borrowck/src/type_check/mod.rs b/compiler/rustc_borrowck/src/type_check/mod.rs index a17dff5d271..05e0bb3f9f3 100644 --- a/compiler/rustc_borrowck/src/type_check/mod.rs +++ b/compiler/rustc_borrowck/src/type_check/mod.rs @@ -113,7 +113,6 @@ pub(crate) fn type_check<'a, 'tcx>( move_data: &MoveData<'tcx>, location_map: Rc<DenseLocationMap>, ) -> MirTypeckResults<'tcx> { - let implicit_region_bound = ty::Region::new_var(infcx.tcx, universal_regions.fr_fn_body); let mut constraints = MirTypeckRegionConstraints { placeholder_indices: PlaceholderIndices::default(), placeholder_index_to_region: IndexVec::default(), @@ -129,13 +128,7 @@ pub(crate) fn type_check<'a, 'tcx>( region_bound_pairs, normalized_inputs_and_output, known_type_outlives_obligations, - } = free_region_relations::create( - infcx, - infcx.param_env, - implicit_region_bound, - universal_regions, - &mut constraints, - ); + } = free_region_relations::create(infcx, infcx.param_env, universal_regions, &mut constraints); let pre_obligations = infcx.take_registered_region_obligations(); assert!( @@ -160,7 +153,6 @@ pub(crate) fn type_check<'a, 'tcx>( user_type_annotations: &body.user_type_annotations, region_bound_pairs, known_type_outlives_obligations, - implicit_region_bound, reported_errors: Default::default(), universal_regions: &universal_region_relations.universal_regions, location_table, @@ -226,7 +218,6 @@ struct TypeChecker<'a, 'tcx> { user_type_annotations: &'a CanonicalUserTypeAnnotations<'tcx>, region_bound_pairs: RegionBoundPairs<'tcx>, known_type_outlives_obligations: Vec<ty::PolyTypeOutlivesPredicate<'tcx>>, - implicit_region_bound: ty::Region<'tcx>, reported_errors: FxIndexSet<(Ty<'tcx>, Span)>, universal_regions: &'a UniversalRegions<'tcx>, location_table: &'a PoloniusLocationTable, @@ -422,7 +413,6 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> { self.infcx, self.universal_regions, &self.region_bound_pairs, - self.implicit_region_bound, self.infcx.param_env, &self.known_type_outlives_obligations, locations, @@ -2507,7 +2497,6 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> { self.infcx, self.universal_regions, &self.region_bound_pairs, - self.implicit_region_bound, self.infcx.param_env, &self.known_type_outlives_obligations, locations, diff --git a/compiler/rustc_borrowck/src/universal_regions.rs b/compiler/rustc_borrowck/src/universal_regions.rs index 5c57ab99a85..c11e14d214c 100644 --- a/compiler/rustc_borrowck/src/universal_regions.rs +++ b/compiler/rustc_borrowck/src/universal_regions.rs @@ -438,6 +438,10 @@ impl<'tcx> UniversalRegions<'tcx> { } } + pub(crate) fn implicit_region_bound(&self) -> RegionVid { + self.fr_fn_body + } + pub(crate) fn tainted_by_errors(&self) -> Option<ErrorGuaranteed> { self.indices.tainted_by_errors.get() } diff --git a/compiler/rustc_trait_selection/messages.ftl b/compiler/rustc_trait_selection/messages.ftl index 05bbb42fb7c..74e38f525c8 100644 --- a/compiler/rustc_trait_selection/messages.ftl +++ b/compiler/rustc_trait_selection/messages.ftl @@ -268,8 +268,8 @@ trait_selection_oc_type_compat = type not compatible with trait trait_selection_opaque_captures_lifetime = hidden type for `{$opaque_ty}` captures lifetime that does not appear in bounds .label = opaque type defined here trait_selection_opaque_type_non_generic_param = - expected generic {$kind} parameter, found `{$ty}` - .label = {STREQ($ty, "'static") -> + expected generic {$kind} parameter, found `{$arg}` + .label = {STREQ($arg, "'static") -> [true] cannot use static lifetime; use a bound lifetime instead or remove the lifetime parameter from the opaque type *[other] this generic parameter must be used with a generic {$kind} parameter } diff --git a/compiler/rustc_trait_selection/src/errors.rs b/compiler/rustc_trait_selection/src/errors.rs index bb4aba9d29e..4e5581fb1da 100644 --- a/compiler/rustc_trait_selection/src/errors.rs +++ b/compiler/rustc_trait_selection/src/errors.rs @@ -1926,7 +1926,7 @@ impl Subdiagnostic for AddPreciseCapturingForOvercapture { #[derive(Diagnostic)] #[diag(trait_selection_opaque_type_non_generic_param, code = E0792)] pub(crate) struct NonGenericOpaqueTypeParam<'a, 'tcx> { - pub ty: GenericArg<'tcx>, + pub arg: GenericArg<'tcx>, pub kind: &'a str, #[primary_span] pub span: Span, diff --git a/compiler/rustc_trait_selection/src/opaque_types.rs b/compiler/rustc_trait_selection/src/opaque_types.rs index 309bf4dda3d..cce67b066dd 100644 --- a/compiler/rustc_trait_selection/src/opaque_types.rs +++ b/compiler/rustc_trait_selection/src/opaque_types.rs @@ -70,7 +70,7 @@ pub fn check_opaque_type_parameter_valid<'tcx>( opaque_env.param_is_error(i)?; return Err(infcx.dcx().emit_err(NonGenericOpaqueTypeParam { - ty: arg, + arg, kind, span, param_span: tcx.def_span(opaque_param.def_id), |