From e315bbf736acc6408955f48e2effb1645bf1a022 Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Mon, 8 May 2023 21:43:03 +0000 Subject: [PATCH 1/2] test for reachable private impl --- .../reachable/auxiliary/foreign-priv-aux.rs | 21 +++++++++++++++++++ tests/ui/reachable/foreign-priv.rs | 12 +++++++++++ 2 files changed, 33 insertions(+) create mode 100644 tests/ui/reachable/auxiliary/foreign-priv-aux.rs create mode 100644 tests/ui/reachable/foreign-priv.rs diff --git a/tests/ui/reachable/auxiliary/foreign-priv-aux.rs b/tests/ui/reachable/auxiliary/foreign-priv-aux.rs new file mode 100644 index 00000000000..10dc0861461 --- /dev/null +++ b/tests/ui/reachable/auxiliary/foreign-priv-aux.rs @@ -0,0 +1,21 @@ +trait PrivTrait { + fn priv_fn(&self); +} + +pub struct ImplPrivTrait; + +impl PrivTrait for ImplPrivTrait { + fn priv_fn(&self) {} +} + +pub struct Wrapper(T); + +pub trait PubTrait { + fn pub_fn(&self); +} + +impl PubTrait for Wrapper { + fn pub_fn(&self) { + self.0.priv_fn() + } +} diff --git a/tests/ui/reachable/foreign-priv.rs b/tests/ui/reachable/foreign-priv.rs new file mode 100644 index 00000000000..bf336b6be7a --- /dev/null +++ b/tests/ui/reachable/foreign-priv.rs @@ -0,0 +1,12 @@ +// aux-build:foreign-priv-aux.rs +// build-pass + +#![crate_type = "lib"] + +extern crate foreign_priv_aux; + +use foreign_priv_aux::{ImplPrivTrait, PubTrait, Wrapper}; + +pub fn foo(x: Wrapper) { + x.pub_fn(); +} From 5fcf2e6edc07e38e24201146be9fb58fe6cd72a0 Mon Sep 17 00:00:00 2001 From: Michael Goulet Date: Mon, 8 May 2023 21:28:21 +0000 Subject: [PATCH 2/2] Revert "Populate effective visibilities in `rustc_privacy`" This reverts commit cff85f22f5030fbe7266d272da74a9e76160523c. --- compiler/rustc_middle/src/middle/privacy.rs | 45 +-- compiler/rustc_privacy/src/lib.rs | 267 ++++++++---------- .../src/effective_visibilities.rs | 4 +- library/core/src/iter/adapters/flatten.rs | 6 - 4 files changed, 143 insertions(+), 179 deletions(-) diff --git a/compiler/rustc_middle/src/middle/privacy.rs b/compiler/rustc_middle/src/middle/privacy.rs index aeb6a1601fc..967fed687b6 100644 --- a/compiler/rustc_middle/src/middle/privacy.rs +++ b/compiler/rustc_middle/src/middle/privacy.rs @@ -64,7 +64,7 @@ impl EffectiveVisibility { self.at_level(level).is_public() } - pub const fn from_vis(vis: Visibility) -> EffectiveVisibility { + pub fn from_vis(vis: Visibility) -> EffectiveVisibility { EffectiveVisibility { direct: vis, reexported: vis, @@ -72,18 +72,6 @@ impl EffectiveVisibility { reachable_through_impl_trait: vis, } } - - #[must_use] - pub fn min(mut self, lhs: EffectiveVisibility, tcx: TyCtxt<'_>) -> Self { - for l in Level::all_levels() { - let rhs_vis = self.at_level_mut(l); - let lhs_vis = *lhs.at_level(l); - if rhs_vis.is_at_least(lhs_vis, tcx) { - *rhs_vis = lhs_vis; - }; - } - self - } } /// Holds a map of effective visibilities for reachable HIR nodes. @@ -149,6 +137,24 @@ impl EffectiveVisibilities { }; } + pub fn set_public_at_level( + &mut self, + id: LocalDefId, + lazy_private_vis: impl FnOnce() -> Visibility, + level: Level, + ) { + let mut effective_vis = self + .effective_vis(id) + .copied() + .unwrap_or_else(|| EffectiveVisibility::from_vis(lazy_private_vis())); + for l in Level::all_levels() { + if l <= level { + *effective_vis.at_level_mut(l) = Visibility::Public; + } + } + self.map.insert(id, effective_vis); + } + pub fn check_invariants(&self, tcx: TyCtxt<'_>, early: bool) { if !cfg!(debug_assertions) { return; @@ -213,7 +219,7 @@ impl EffectiveVisibilities { pub fn update( &mut self, id: Id, - nominal_vis: Option, + nominal_vis: Visibility, lazy_private_vis: impl FnOnce() -> Visibility, inherited_effective_vis: EffectiveVisibility, level: Level, @@ -237,11 +243,12 @@ impl EffectiveVisibilities { if !(inherited_effective_vis_at_prev_level == inherited_effective_vis_at_level && level != l) { - calculated_effective_vis = if let Some(nominal_vis) = nominal_vis && !nominal_vis.is_at_least(inherited_effective_vis_at_level, tcx) { - nominal_vis - } else { - inherited_effective_vis_at_level - } + calculated_effective_vis = + if nominal_vis.is_at_least(inherited_effective_vis_at_level, tcx) { + inherited_effective_vis_at_level + } else { + nominal_vis + }; } // effective visibility can't be decreased at next update call for the // same id diff --git a/compiler/rustc_privacy/src/lib.rs b/compiler/rustc_privacy/src/lib.rs index b738ce35ada..04ac585076f 100644 --- a/compiler/rustc_privacy/src/lib.rs +++ b/compiler/rustc_privacy/src/lib.rs @@ -25,7 +25,7 @@ use rustc_hir::intravisit::{self, Visitor}; use rustc_hir::{AssocItemKind, HirIdSet, ItemId, Node, PatKind}; use rustc_middle::bug; use rustc_middle::hir::nested_filter; -use rustc_middle::middle::privacy::{EffectiveVisibilities, EffectiveVisibility, Level}; +use rustc_middle::middle::privacy::{EffectiveVisibilities, Level}; use rustc_middle::span_bug; use rustc_middle::ty::query::Providers; use rustc_middle::ty::subst::InternalSubsts; @@ -38,7 +38,7 @@ use rustc_span::Span; use std::marker::PhantomData; use std::ops::ControlFlow; -use std::{fmt, mem}; +use std::{cmp, fmt, mem}; use errors::{ FieldIsPrivate, FieldIsPrivateLabel, FromPrivateDependencyInPublicInterface, InPublicInterface, @@ -375,9 +375,8 @@ impl VisibilityLike for ty::Visibility { min(find.tcx.local_visibility(def_id), find.min, find.tcx) } } - -impl VisibilityLike for Option { - const MAX: Self = Some(EffectiveVisibility::from_vis(ty::Visibility::Public)); +impl VisibilityLike for Option { + const MAX: Self = Some(Level::Direct); // Type inference is very smart sometimes. // It can make an impl reachable even some components of its type or trait are unreachable. // E.g. methods of `impl ReachableTrait for ReachableTy { ... }` @@ -389,13 +388,7 @@ impl VisibilityLike for Option { // (which require reaching the `DefId`s in them). const SHALLOW: bool = true; fn new_min(find: &FindMin<'_, '_, Self>, def_id: LocalDefId) -> Self { - if let Some(min) = find.min { - return find - .effective_visibilities - .effective_vis(def_id) - .map(|eff_vis| min.min(*eff_vis, find.tcx)); - } - None + cmp::min(find.effective_visibilities.public_at_level(def_id), find.min) } } @@ -421,79 +414,49 @@ struct EmbargoVisitor<'tcx> { /// n::p::f() /// } macro_reachable: FxHashSet<(LocalDefId, LocalDefId)>, + /// Previous visibility level; `None` means unreachable. + prev_level: Option, /// Has something changed in the level map? changed: bool, } struct ReachEverythingInTheInterfaceVisitor<'a, 'tcx> { - effective_vis: Option, + level: Option, item_def_id: LocalDefId, ev: &'a mut EmbargoVisitor<'tcx>, - level: Level, } impl<'tcx> EmbargoVisitor<'tcx> { - fn get(&self, def_id: LocalDefId) -> Option { - self.effective_visibilities.effective_vis(def_id).copied() + fn get(&self, def_id: LocalDefId) -> Option { + self.effective_visibilities.public_at_level(def_id) } - // Updates node effective visibility. - fn update( - &mut self, - def_id: LocalDefId, - inherited_effective_vis: Option, - level: Level, - ) { - let nominal_vis = self.tcx.local_visibility(def_id); - self.update_eff_vis(def_id, inherited_effective_vis, Some(nominal_vis), level); - } - - fn update_eff_vis( - &mut self, - def_id: LocalDefId, - inherited_effective_vis: Option, - nominal_vis: Option, - level: Level, - ) { - if let Some(inherited_effective_vis) = inherited_effective_vis { - let private_vis = - ty::Visibility::Restricted(self.tcx.parent_module_from_def_id(def_id)); - if Some(private_vis) != nominal_vis { - self.changed |= self.effective_visibilities.update( - def_id, - nominal_vis, - || private_vis, - inherited_effective_vis, - level, - self.tcx, - ); - } + /// Updates node level and returns the updated level. + fn update(&mut self, def_id: LocalDefId, level: Option) -> Option { + let old_level = self.get(def_id); + // Visibility levels can only grow. + if level > old_level { + self.effective_visibilities.set_public_at_level( + def_id, + || ty::Visibility::Restricted(self.tcx.parent_module_from_def_id(def_id)), + level.unwrap(), + ); + self.changed = true; + level + } else { + old_level } } fn reach( &mut self, def_id: LocalDefId, - effective_vis: Option, + level: Option, ) -> ReachEverythingInTheInterfaceVisitor<'_, 'tcx> { ReachEverythingInTheInterfaceVisitor { - effective_vis, + level: cmp::min(level, Some(Level::Reachable)), item_def_id: def_id, ev: self, - level: Level::Reachable, - } - } - - fn reach_through_impl_trait( - &mut self, - def_id: LocalDefId, - effective_vis: Option, - ) -> ReachEverythingInTheInterfaceVisitor<'_, 'tcx> { - ReachEverythingInTheInterfaceVisitor { - effective_vis, - item_def_id: def_id, - ev: self, - level: Level::ReachableThroughImplTrait, } } @@ -514,18 +477,16 @@ impl<'tcx> EmbargoVisitor<'tcx> { return; } - if self.effective_visibilities.public_at_level(local_def_id).is_none() { + if self.get(local_def_id).is_none() { return; } // Since we are starting from an externally visible module, // all the parents in the loop below are also guaranteed to be modules. let mut module_def_id = macro_module_def_id; - let macro_ev = self.get(local_def_id); - assert!(macro_ev.is_some()); loop { let changed_reachability = - self.update_macro_reachable(module_def_id, macro_module_def_id, macro_ev); + self.update_macro_reachable(module_def_id, macro_module_def_id); if changed_reachability || module_def_id == CRATE_DEF_ID { break; } @@ -539,33 +500,21 @@ impl<'tcx> EmbargoVisitor<'tcx> { &mut self, module_def_id: LocalDefId, defining_mod: LocalDefId, - macro_ev: Option, ) -> bool { if self.macro_reachable.insert((module_def_id, defining_mod)) { - self.update_macro_reachable_mod(module_def_id, defining_mod, macro_ev); + self.update_macro_reachable_mod(module_def_id, defining_mod); true } else { false } } - fn update_macro_reachable_mod( - &mut self, - module_def_id: LocalDefId, - defining_mod: LocalDefId, - macro_ev: Option, - ) { + fn update_macro_reachable_mod(&mut self, module_def_id: LocalDefId, defining_mod: LocalDefId) { let module = self.tcx.hir().get_module(module_def_id).0; for item_id in module.item_ids { let def_kind = self.tcx.def_kind(item_id.owner_id); let vis = self.tcx.local_visibility(item_id.owner_id.def_id); - self.update_macro_reachable_def( - item_id.owner_id.def_id, - def_kind, - vis, - defining_mod, - macro_ev, - ); + self.update_macro_reachable_def(item_id.owner_id.def_id, def_kind, vis, defining_mod); } for child in self.tcx.module_children_local(module_def_id) { // FIXME: Use module children for the logic above too. @@ -574,7 +523,7 @@ impl<'tcx> EmbargoVisitor<'tcx> { && let Res::Def(def_kind, def_id) = child.res && let Some(def_id) = def_id.as_local() { let vis = self.tcx.local_visibility(def_id); - self.update_macro_reachable_def(def_id, def_kind, vis, defining_mod, macro_ev); + self.update_macro_reachable_def(def_id, def_kind, vis, defining_mod); } } } @@ -585,14 +534,16 @@ impl<'tcx> EmbargoVisitor<'tcx> { def_kind: DefKind, vis: ty::Visibility, module: LocalDefId, - macro_ev: Option, ) { - self.update(def_id, macro_ev, Level::Reachable); + let level = Some(Level::Reachable); + if vis.is_public() { + self.update(def_id, level); + } match def_kind { // No type privacy, so can be directly marked as reachable. DefKind::Const | DefKind::Static(_) | DefKind::TraitAlias | DefKind::TyAlias => { if vis.is_accessible_from(module, self.tcx) { - self.update(def_id, macro_ev, Level::Reachable); + self.update(def_id, level); } } @@ -604,7 +555,7 @@ impl<'tcx> EmbargoVisitor<'tcx> { let item = self.tcx.hir().expect_item(def_id); if let hir::ItemKind::Macro(MacroDef { macro_rules: false, .. }, _) = item.kind { if vis.is_accessible_from(module, self.tcx) { - self.update(def_id, macro_ev, Level::Reachable); + self.update(def_id, level); } } } @@ -615,24 +566,26 @@ impl<'tcx> EmbargoVisitor<'tcx> { // the module, however may be reachable. DefKind::Mod => { if vis.is_accessible_from(module, self.tcx) { - self.update_macro_reachable(def_id, module, macro_ev); + self.update_macro_reachable(def_id, module); } } DefKind::Struct | DefKind::Union => { // While structs and unions have type privacy, their fields do not. - let item = self.tcx.hir().expect_item(def_id); - if let hir::ItemKind::Struct(ref struct_def, _) - | hir::ItemKind::Union(ref struct_def, _) = item.kind - { - for field in struct_def.fields() { - let field_vis = self.tcx.local_visibility(field.def_id); - if field_vis.is_accessible_from(module, self.tcx) { - self.reach(field.def_id, macro_ev).ty(); + if vis.is_public() { + let item = self.tcx.hir().expect_item(def_id); + if let hir::ItemKind::Struct(ref struct_def, _) + | hir::ItemKind::Union(ref struct_def, _) = item.kind + { + for field in struct_def.fields() { + let field_vis = self.tcx.local_visibility(field.def_id); + if field_vis.is_accessible_from(module, self.tcx) { + self.reach(field.def_id, level).ty(); + } } + } else { + bug!("item {:?} with DefKind {:?}", item, def_kind); } - } else { - bug!("item {:?} with DefKind {:?}", item, def_kind); } } @@ -676,16 +629,14 @@ impl<'tcx> Visitor<'tcx> for EmbargoVisitor<'tcx> { } fn visit_item(&mut self, item: &'tcx hir::Item<'tcx>) { - let item_ev = match item.kind { + let item_level = match item.kind { hir::ItemKind::Impl { .. } => { - let impl_ev = Option::::of_impl( + let impl_level = Option::::of_impl( item.owner_id.def_id, self.tcx, &self.effective_visibilities, ); - - self.update_eff_vis(item.owner_id.def_id, impl_ev, None, Level::Direct); - impl_ev + self.update(item.owner_id.def_id, impl_level) } _ => self.get(item.owner_id.def_id), }; @@ -694,32 +645,38 @@ impl<'tcx> Visitor<'tcx> for EmbargoVisitor<'tcx> { match item.kind { hir::ItemKind::Enum(ref def, _) => { for variant in def.variants { - self.update(variant.def_id, item_ev, Level::Reachable); - let variant_ev = self.get(variant.def_id); + let variant_level = self.update(variant.def_id, item_level); if let Some(ctor_def_id) = variant.data.ctor_def_id() { - self.update(ctor_def_id, variant_ev, Level::Reachable); + self.update(ctor_def_id, item_level); } for field in variant.data.fields() { - self.update(field.def_id, variant_ev, Level::Reachable); + self.update(field.def_id, variant_level); } } } hir::ItemKind::Impl(ref impl_) => { for impl_item_ref in impl_.items { - self.update(impl_item_ref.id.owner_id.def_id, item_ev, Level::Direct); + if impl_.of_trait.is_some() + || self.tcx.visibility(impl_item_ref.id.owner_id).is_public() + { + self.update(impl_item_ref.id.owner_id.def_id, item_level); + } } } hir::ItemKind::Trait(.., trait_item_refs) => { for trait_item_ref in trait_item_refs { - self.update(trait_item_ref.id.owner_id.def_id, item_ev, Level::Reachable); + self.update(trait_item_ref.id.owner_id.def_id, item_level); } } hir::ItemKind::Struct(ref def, _) | hir::ItemKind::Union(ref def, _) => { if let Some(ctor_def_id) = def.ctor_def_id() { - self.update(ctor_def_id, item_ev, Level::Reachable); + self.update(ctor_def_id, item_level); } for field in def.fields() { - self.update(field.def_id, item_ev, Level::Reachable); + let vis = self.tcx.visibility(field.def_id); + if vis.is_public() { + self.update(field.def_id, item_level); + } } } hir::ItemKind::Macro(ref macro_def, _) => { @@ -727,7 +684,9 @@ impl<'tcx> Visitor<'tcx> for EmbargoVisitor<'tcx> { } hir::ItemKind::ForeignMod { items, .. } => { for foreign_item in items { - self.update(foreign_item.id.owner_id.def_id, item_ev, Level::Reachable); + if self.tcx.visibility(foreign_item.id.owner_id).is_public() { + self.update(foreign_item.id.owner_id.def_id, item_level); + } } } @@ -762,11 +721,8 @@ impl<'tcx> Visitor<'tcx> for EmbargoVisitor<'tcx> { // FIXME: This is some serious pessimization intended to workaround deficiencies // in the reachability pass (`middle/reachable.rs`). Types are marked as link-time // reachable if they are returned via `impl Trait`, even from private functions. - let exist_ev = Some(EffectiveVisibility::from_vis(ty::Visibility::Public)); - self.reach_through_impl_trait(item.owner_id.def_id, exist_ev) - .generics() - .predicates() - .ty(); + let exist_level = cmp::max(item_level, Some(Level::ReachableThroughImplTrait)); + self.reach(item.owner_id.def_id, exist_level).generics().predicates().ty(); } } // Visit everything. @@ -774,18 +730,17 @@ impl<'tcx> Visitor<'tcx> for EmbargoVisitor<'tcx> { | hir::ItemKind::Static(..) | hir::ItemKind::Fn(..) | hir::ItemKind::TyAlias(..) => { - if item_ev.is_some() { - self.reach(item.owner_id.def_id, item_ev).generics().predicates().ty(); + if item_level.is_some() { + self.reach(item.owner_id.def_id, item_level).generics().predicates().ty(); } } hir::ItemKind::Trait(.., trait_item_refs) => { - if item_ev.is_some() { - self.reach(item.owner_id.def_id, item_ev).generics().predicates(); + if item_level.is_some() { + self.reach(item.owner_id.def_id, item_level).generics().predicates(); for trait_item_ref in trait_item_refs { let tcx = self.tcx; - let mut reach = self.reach(trait_item_ref.id.owner_id.def_id, item_ev); - + let mut reach = self.reach(trait_item_ref.id.owner_id.def_id, item_level); reach.generics().predicates(); if trait_item_ref.kind == AssocItemKind::Type @@ -799,24 +754,23 @@ impl<'tcx> Visitor<'tcx> for EmbargoVisitor<'tcx> { } } hir::ItemKind::TraitAlias(..) => { - if item_ev.is_some() { - self.reach(item.owner_id.def_id, item_ev).generics().predicates(); + if item_level.is_some() { + self.reach(item.owner_id.def_id, item_level).generics().predicates(); } } // Visit everything except for private impl items. hir::ItemKind::Impl(ref impl_) => { - if item_ev.is_some() { - self.reach(item.owner_id.def_id, item_ev) + if item_level.is_some() { + self.reach(item.owner_id.def_id, item_level) .generics() .predicates() .ty() .trait_ref(); for impl_item_ref in impl_.items { - let impl_item_ev = self.get(impl_item_ref.id.owner_id.def_id); - - if impl_item_ev.is_some() { - self.reach(impl_item_ref.id.owner_id.def_id, impl_item_ev) + let impl_item_level = self.get(impl_item_ref.id.owner_id.def_id); + if impl_item_level.is_some() { + self.reach(impl_item_ref.id.owner_id.def_id, impl_item_level) .generics() .predicates() .ty(); @@ -827,23 +781,23 @@ impl<'tcx> Visitor<'tcx> for EmbargoVisitor<'tcx> { // Visit everything, but enum variants have their own levels. hir::ItemKind::Enum(ref def, _) => { - if item_ev.is_some() { - self.reach(item.owner_id.def_id, item_ev).generics().predicates(); + if item_level.is_some() { + self.reach(item.owner_id.def_id, item_level).generics().predicates(); } for variant in def.variants { - let variant_ev = self.get(variant.def_id); - if variant_ev.is_some() { + let variant_level = self.get(variant.def_id); + if variant_level.is_some() { for field in variant.data.fields() { - self.reach(field.def_id, variant_ev).ty(); + self.reach(field.def_id, variant_level).ty(); } // Corner case: if the variant is reachable, but its // enum is not, make the enum reachable as well. - self.reach(item.owner_id.def_id, variant_ev).ty(); + self.reach(item.owner_id.def_id, variant_level).ty(); } if let Some(ctor_def_id) = variant.data.ctor_def_id() { - let ctor_ev = self.get(ctor_def_id); - if ctor_ev.is_some() { - self.reach(item.owner_id.def_id, ctor_ev).ty(); + let ctor_level = self.get(ctor_def_id); + if ctor_level.is_some() { + self.reach(item.owner_id.def_id, ctor_level).ty(); } } } @@ -851,9 +805,9 @@ impl<'tcx> Visitor<'tcx> for EmbargoVisitor<'tcx> { // Visit everything, but foreign items have their own levels. hir::ItemKind::ForeignMod { items, .. } => { for foreign_item in items { - let foreign_item_ev = self.get(foreign_item.id.owner_id.def_id); - if foreign_item_ev.is_some() { - self.reach(foreign_item.id.owner_id.def_id, foreign_item_ev) + let foreign_item_level = self.get(foreign_item.id.owner_id.def_id); + if foreign_item_level.is_some() { + self.reach(foreign_item.id.owner_id.def_id, foreign_item_level) .generics() .predicates() .ty(); @@ -862,32 +816,36 @@ impl<'tcx> Visitor<'tcx> for EmbargoVisitor<'tcx> { } // Visit everything except for private fields. hir::ItemKind::Struct(ref struct_def, _) | hir::ItemKind::Union(ref struct_def, _) => { - if item_ev.is_some() { - self.reach(item.owner_id.def_id, item_ev).generics().predicates(); + if item_level.is_some() { + self.reach(item.owner_id.def_id, item_level).generics().predicates(); for field in struct_def.fields() { - let field_ev = self.get(field.def_id); - if field_ev.is_some() { - self.reach(field.def_id, field_ev).ty(); + let field_level = self.get(field.def_id); + if field_level.is_some() { + self.reach(field.def_id, field_level).ty(); } } } if let Some(ctor_def_id) = struct_def.ctor_def_id() { - let ctor_ev = self.get(ctor_def_id); - if ctor_ev.is_some() { - self.reach(item.owner_id.def_id, ctor_ev).ty(); + let ctor_level = self.get(ctor_def_id); + if ctor_level.is_some() { + self.reach(item.owner_id.def_id, ctor_level).ty(); } } } } + let orig_level = mem::replace(&mut self.prev_level, item_level); intravisit::walk_item(self, item); + self.prev_level = orig_level; } fn visit_block(&mut self, b: &'tcx hir::Block<'tcx>) { // Blocks can have public items, for example impls, but they always // start as completely private regardless of publicity of a function, // constant, type, field, etc., in which this block resides. + let orig_level = mem::replace(&mut self.prev_level, None); intravisit::walk_block(self, b); + self.prev_level = orig_level; } } @@ -941,7 +899,11 @@ impl<'tcx> DefIdVisitor<'tcx> for ReachEverythingInTheInterfaceVisitor<'_, 'tcx> _descr: &dyn fmt::Display, ) -> ControlFlow { if let Some(def_id) = def_id.as_local() { - self.ev.update_eff_vis(def_id, self.effective_vis, None, self.level); + if let (ty::Visibility::Public, _) | (_, Some(Level::ReachableThroughImplTrait)) = + (self.tcx().visibility(def_id.to_def_id()), self.level) + { + self.ev.update(def_id, self.level); + } } ControlFlow::Continue(()) } @@ -2169,6 +2131,7 @@ fn effective_visibilities(tcx: TyCtxt<'_>, (): ()) -> &EffectiveVisibilities { tcx, effective_visibilities: tcx.resolutions(()).effective_visibilities.clone(), macro_reachable: Default::default(), + prev_level: Some(Level::Direct), changed: false, }; diff --git a/compiler/rustc_resolve/src/effective_visibilities.rs b/compiler/rustc_resolve/src/effective_visibilities.rs index 7393bdb388a..87067189a77 100644 --- a/compiler/rustc_resolve/src/effective_visibilities.rs +++ b/compiler/rustc_resolve/src/effective_visibilities.rs @@ -199,7 +199,7 @@ impl<'r, 'a, 'tcx> EffectiveVisibilitiesVisitor<'r, 'a, 'tcx> { let tcx = self.r.tcx; self.changed |= self.import_effective_visibilities.update( binding, - Some(nominal_vis), + nominal_vis, || cheap_private_vis.unwrap_or_else(|| self.r.private_vis_import(binding)), inherited_eff_vis, parent_id.level(), @@ -213,7 +213,7 @@ impl<'r, 'a, 'tcx> EffectiveVisibilitiesVisitor<'r, 'a, 'tcx> { let tcx = self.r.tcx; self.changed |= self.def_effective_visibilities.update( def_id, - Some(nominal_vis), + nominal_vis, || cheap_private_vis.unwrap_or_else(|| self.r.private_vis_def(def_id)), inherited_eff_vis, parent_id.level(), diff --git a/library/core/src/iter/adapters/flatten.rs b/library/core/src/iter/adapters/flatten.rs index 2568aaf34f3..520ec9abcf0 100644 --- a/library/core/src/iter/adapters/flatten.rs +++ b/library/core/src/iter/adapters/flatten.rs @@ -310,7 +310,6 @@ where /// Real logic of both `Flatten` and `FlatMap` which simply delegate to /// this type. #[derive(Clone, Debug)] -#[unstable(feature = "trusted_len", issue = "37572")] struct FlattenCompat { iter: Fuse, frontiter: Option, @@ -464,7 +463,6 @@ where } } -#[unstable(feature = "trusted_len", issue = "37572")] impl Iterator for FlattenCompat where I: Iterator>, @@ -579,7 +577,6 @@ where } } -#[unstable(feature = "trusted_len", issue = "37572")] impl DoubleEndedIterator for FlattenCompat where I: DoubleEndedIterator>, @@ -649,7 +646,6 @@ where } } -#[unstable(feature = "trusted_len", issue = "37572")] unsafe impl TrustedLen for FlattenCompat::IntoIter> where @@ -657,7 +653,6 @@ where { } -#[unstable(feature = "trusted_len", issue = "37572")] unsafe impl<'a, const N: usize, I, T> TrustedLen for FlattenCompat::IntoIter> where @@ -665,7 +660,6 @@ where { } -#[unstable(feature = "trusted_len", issue = "37572")] unsafe impl<'a, const N: usize, I, T> TrustedLen for FlattenCompat::IntoIter> where