diff options
Diffstat (limited to 'compiler/rustc_trait_selection/src/traits/coherence.rs')
| -rw-r--r-- | compiler/rustc_trait_selection/src/traits/coherence.rs | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/compiler/rustc_trait_selection/src/traits/coherence.rs b/compiler/rustc_trait_selection/src/traits/coherence.rs index 225c1050c..6b688c322 100644 --- a/compiler/rustc_trait_selection/src/traits/coherence.rs +++ b/compiler/rustc_trait_selection/src/traits/coherence.rs @@ -17,12 +17,11 @@ use crate::traits::{ use rustc_data_structures::fx::FxIndexSet; use rustc_errors::Diagnostic; use rustc_hir::def_id::{DefId, CRATE_DEF_ID, LOCAL_CRATE}; -use rustc_hir::CRATE_HIR_ID; use rustc_infer::infer::{DefiningAnchor, InferCtxt, TyCtxtInferExt}; use rustc_infer::traits::util; use rustc_middle::traits::specialization_graph::OverlapMode; use rustc_middle::ty::fast_reject::{DeepRejectCtxt, TreatParams}; -use rustc_middle::ty::visit::TypeVisitable; +use rustc_middle::ty::visit::{TypeVisitable, TypeVisitableExt}; use rustc_middle::ty::{self, ImplSubject, Ty, TyCtxt, TypeVisitor}; use rustc_span::symbol::sym; use rustc_span::DUMMY_SP; @@ -83,8 +82,8 @@ pub fn overlapping_impls( (Some(a), Some(b)) => iter::zip(a.skip_binder().substs, b.skip_binder().substs) .all(|(arg1, arg2)| drcx.generic_args_may_unify(arg1, arg2)), (None, None) => { - let self_ty1 = tcx.type_of(impl1_def_id); - let self_ty2 = tcx.type_of(impl2_def_id); + let self_ty1 = tcx.type_of(impl1_def_id).skip_binder(); + let self_ty2 = tcx.type_of(impl2_def_id).skip_binder(); drcx.types_may_unify(self_ty1, self_ty2) } _ => bug!("unexpected impls: {impl1_def_id:?} {impl2_def_id:?}"), @@ -125,7 +124,7 @@ fn with_fresh_ty_vars<'cx, 'tcx>( let header = ty::ImplHeader { impl_def_id, - self_ty: tcx.bound_type_of(impl_def_id).subst(tcx, impl_substs), + self_ty: tcx.type_of(impl_def_id).subst(tcx, impl_substs), trait_ref: tcx.impl_trait_ref(impl_def_id).map(|i| i.subst(tcx, impl_substs)), predicates: tcx.predicates_of(impl_def_id).instantiate(tcx, impl_substs).predicates, }; @@ -218,6 +217,7 @@ fn equate_impl_headers<'cx, 'tcx>( selcx .infcx .at(&ObligationCause::dummy(), ty::ParamEnv::empty()) + .define_opaque_types(true) .eq_impl_headers(impl1_header, impl2_header) .map(|infer_ok| infer_ok.obligations) .ok() @@ -382,18 +382,14 @@ fn resolve_negative_obligation<'tcx>( return false; } - let (body_id, body_def_id) = if let Some(body_def_id) = body_def_id.as_local() { - (tcx.hir().local_def_id_to_hir_id(body_def_id), body_def_id) - } else { - (CRATE_HIR_ID, CRATE_DEF_ID) - }; + let body_def_id = body_def_id.as_local().unwrap_or(CRATE_DEF_ID); let ocx = ObligationCtxt::new(&infcx); let wf_tys = ocx.assumed_wf_types(param_env, DUMMY_SP, body_def_id); let outlives_env = OutlivesEnvironment::with_bounds( param_env, Some(&infcx), - infcx.implied_bounds_tys(param_env, body_id, wf_tys), + infcx.implied_bounds_tys(param_env, body_def_id, wf_tys), ); infcx.process_registered_region_obligations(outlives_env.region_bound_pairs(), param_env); @@ -632,7 +628,7 @@ enum OrphanCheckEarlyExit<'tcx> { LocalTy(Ty<'tcx>), } -impl<'tcx> TypeVisitor<'tcx> for OrphanChecker<'tcx> { +impl<'tcx> TypeVisitor<TyCtxt<'tcx>> for OrphanChecker<'tcx> { type BreakTy = OrphanCheckEarlyExit<'tcx>; fn visit_region(&mut self, _r: ty::Region<'tcx>) -> ControlFlow<Self::BreakTy> { ControlFlow::Continue(()) @@ -701,7 +697,9 @@ impl<'tcx> TypeVisitor<'tcx> for OrphanChecker<'tcx> { // This should only be created when checking whether we have to check whether some // auto trait impl applies. There will never be multiple impls, so we can just // act as if it were a local type here. - ty::GeneratorWitness(_) => ControlFlow::Break(OrphanCheckEarlyExit::LocalTy(ty)), + ty::GeneratorWitness(_) | ty::GeneratorWitnessMIR(..) => { + ControlFlow::Break(OrphanCheckEarlyExit::LocalTy(ty)) + } ty::Alias(ty::Opaque, ..) => { // This merits some explanation. // Normally, opaque types are not involved when performing |