diff options
24 files changed, 266 insertions, 397 deletions
diff --git a/compiler/rustc_mir_build/src/thir/cx/mod.rs b/compiler/rustc_mir_build/src/thir/cx/mod.rs index d853a5e9ee7..62f6a43d1f2 100644 --- a/compiler/rustc_mir_build/src/thir/cx/mod.rs +++ b/compiler/rustc_mir_build/src/thir/cx/mod.rs @@ -5,7 +5,6 @@ use crate::thir::pattern::pat_from_hir; use crate::thir::util::UserAnnotatedTyHelpers; -use rustc_ast as ast; use rustc_data_structures::steal::Steal; use rustc_errors::ErrorGuaranteed; use rustc_hir as hir; @@ -13,10 +12,8 @@ use rustc_hir::def_id::{DefId, LocalDefId}; use rustc_hir::HirId; use rustc_hir::Node; use rustc_middle::middle::region; -use rustc_middle::mir::interpret::{LitToConstError, LitToConstInput}; -use rustc_middle::mir::ConstantKind; use rustc_middle::thir::*; -use rustc_middle::ty::{self, RvalueScopes, Ty, TyCtxt}; +use rustc_middle::ty::{self, RvalueScopes, TyCtxt}; use rustc_span::Span; pub(crate) fn thir_body<'tcx>( @@ -80,24 +77,6 @@ impl<'tcx> Cx<'tcx> { } } - #[instrument(skip(self), level = "debug")] - pub(crate) fn const_eval_literal( - &mut self, - lit: &'tcx ast::LitKind, - ty: Ty<'tcx>, - sp: Span, - neg: bool, - ) -> ConstantKind<'tcx> { - match self.tcx.at(sp).lit_to_mir_constant(LitToConstInput { lit, ty, neg }) { - Ok(c) => c, - Err(LitToConstError::Reported) => { - // create a dummy value and continue compiling - ConstantKind::Ty(self.tcx.const_error(ty)) - } - Err(LitToConstError::TypeError) => bug!("const_eval_literal: had type error"), - } - } - #[tracing::instrument(level = "debug", skip(self))] pub(crate) fn pattern_from_hir(&mut self, p: &hir::Pat<'_>) -> Pat<'tcx> { let p = match self.tcx.hir().get(p.hir_id) { diff --git a/compiler/rustc_passes/src/dead.rs b/compiler/rustc_passes/src/dead.rs index 01d93f6ff0c..58c5e5b4dfe 100644 --- a/compiler/rustc_passes/src/dead.rs +++ b/compiler/rustc_passes/src/dead.rs @@ -10,14 +10,12 @@ use rustc_hir::def::{CtorOf, DefKind, Res}; use rustc_hir::def_id::{DefId, LocalDefId}; use rustc_hir::intravisit::{self, Visitor}; use rustc_hir::{Node, PatKind, TyKind}; -use rustc_middle::hir::nested_filter; use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrFlags; use rustc_middle::middle::privacy; use rustc_middle::ty::query::Providers; use rustc_middle::ty::{self, DefIdTree, TyCtxt}; use rustc_session::lint; use rustc_span::symbol::{sym, Symbol}; -use rustc_span::Span; use std::mem; // Any local node that may call something in its body block should be @@ -82,8 +80,8 @@ impl<'tcx> MarkSymbolVisitor<'tcx> { fn handle_res(&mut self, res: Res) { match res { - Res::Def(DefKind::Const | DefKind::AssocConst | DefKind::TyAlias, _) => { - self.check_def_id(res.def_id()); + Res::Def(DefKind::Const | DefKind::AssocConst | DefKind::TyAlias, def_id) => { + self.check_def_id(def_id); } _ if self.in_pat => {} Res::PrimTy(..) | Res::SelfCtor(..) | Res::Local(..) => {} @@ -102,6 +100,7 @@ impl<'tcx> MarkSymbolVisitor<'tcx> { self.check_def_id(variant_id); } } + Res::Def(_, def_id) => self.check_def_id(def_id), Res::SelfTy { trait_: t, alias_to: i } => { if let Some(t) = t { self.check_def_id(t); @@ -111,9 +110,6 @@ impl<'tcx> MarkSymbolVisitor<'tcx> { } } Res::ToolMod | Res::NonMacroAttr(..) | Res::Err => {} - _ => { - self.check_def_id(res.def_id()); - } } } @@ -285,20 +281,33 @@ impl<'tcx> MarkSymbolVisitor<'tcx> { let def = self.tcx.adt_def(item.def_id); self.repr_has_repr_c = def.repr().c(); - intravisit::walk_item(self, &item); - } - hir::ItemKind::Enum(..) => { - intravisit::walk_item(self, &item); + intravisit::walk_item(self, &item) } hir::ItemKind::ForeignMod { .. } => {} - _ => { - intravisit::walk_item(self, &item); - } + _ => intravisit::walk_item(self, &item), }, Node::TraitItem(trait_item) => { intravisit::walk_trait_item(self, trait_item); } Node::ImplItem(impl_item) => { + let item = self.tcx.local_parent(impl_item.def_id); + if self.tcx.impl_trait_ref(item).is_none() { + //// If it's a type whose items are live, then it's live, too. + //// This is done to handle the case where, for example, the static + //// method of a private type is used, but the type itself is never + //// called directly. + let self_ty = self.tcx.type_of(item); + match *self_ty.kind() { + ty::Adt(def, _) => self.check_def_id(def.did()), + ty::Foreign(did) => self.check_def_id(did), + ty::Dynamic(data, ..) => { + if let Some(def_id) = data.principal_def_id() { + self.check_def_id(def_id) + } + } + _ => {} + } + } intravisit::walk_impl_item(self, impl_item); } Node::ForeignItem(foreign_item) => { @@ -624,8 +633,7 @@ fn live_symbols_and_ignored_derived_traits<'tcx>( } struct DeadVariant { - hir_id: hir::HirId, - span: Span, + def_id: LocalDefId, name: Symbol, level: lint::Level, } @@ -637,85 +645,53 @@ struct DeadVisitor<'tcx> { } impl<'tcx> DeadVisitor<'tcx> { - fn should_warn_about_item(&mut self, item: &hir::Item<'_>) -> bool { - let should_warn = matches!( - item.kind, - hir::ItemKind::Static(..) - | hir::ItemKind::Const(..) - | hir::ItemKind::Fn(..) - | hir::ItemKind::TyAlias(..) - | hir::ItemKind::Enum(..) - | hir::ItemKind::Struct(..) - | hir::ItemKind::Union(..) - ); - should_warn && !self.symbol_is_live(item.def_id) - } - - fn should_warn_about_field(&mut self, field: &hir::FieldDef<'_>) -> bool { - let def_id = self.tcx.hir().local_def_id(field.hir_id); - let field_type = self.tcx.type_of(def_id); - !field.is_positional() - && !self.symbol_is_live(def_id) - && !field_type.is_phantom_data() - && !has_allow_dead_code_or_lang_attr(self.tcx, field.hir_id) - } - - fn should_warn_about_variant(&mut self, variant: &hir::Variant<'_>) -> bool { - let def_id = self.tcx.hir().local_def_id(variant.id); - !self.symbol_is_live(def_id) && !has_allow_dead_code_or_lang_attr(self.tcx, variant.id) - } - - fn should_warn_about_foreign_item(&mut self, fi: &hir::ForeignItem<'_>) -> bool { - !self.symbol_is_live(fi.def_id) && !has_allow_dead_code_or_lang_attr(self.tcx, fi.hir_id()) - } - - // id := HIR id of an item's definition. - fn symbol_is_live(&mut self, def_id: LocalDefId) -> bool { - if self.live_symbols.contains(&def_id) { - return true; + fn should_warn_about_field(&mut self, field: &ty::FieldDef) -> bool { + if self.live_symbols.contains(&field.did.expect_local()) { + return false; } - // If it's a type whose items are live, then it's live, too. - // This is done to handle the case where, for example, the static - // method of a private type is used, but the type itself is never - // called directly. - let inherent_impls = self.tcx.inherent_impls(def_id); - for &impl_did in inherent_impls.iter() { - for item_did in self.tcx.associated_item_def_ids(impl_did) { - if let Some(def_id) = item_did.as_local() - && self.live_symbols.contains(&def_id) - { - return true; - } - } + let is_positional = field.name.as_str().starts_with(|c: char| c.is_ascii_digit()); + if is_positional { + return false; } - false + let field_type = self.tcx.type_of(field.did); + !field_type.is_phantom_data() } fn warn_multiple_dead_codes( &self, - dead_codes: &[(hir::HirId, Span, Symbol)], + dead_codes: &[LocalDefId], participle: &str, - parent_hir_id: Option<hir::HirId>, + parent_item: Option<LocalDefId>, ) { - if let Some((id, _, name)) = dead_codes.first() - && !name.as_str().starts_with('_') - { - self.tcx.struct_span_lint_hir( + if let Some(&first_id) = dead_codes.first() { + let tcx = self.tcx; + let names: Vec<_> = dead_codes + .iter() + .map(|&def_id| tcx.item_name(def_id.to_def_id()).to_string()) + .collect(); + let spans = dead_codes + .iter() + .map(|&def_id| match tcx.def_ident_span(def_id) { + Some(s) => s.with_ctxt(tcx.def_span(def_id).ctxt()), + None => tcx.def_span(def_id), + }) + .collect(); + + tcx.struct_span_lint_hir( lint::builtin::DEAD_CODE, - *id, - MultiSpan::from_spans( - dead_codes.iter().map(|(_, span, _)| *span).collect(), - ), + tcx.hir().local_def_id_to_hir_id(first_id), + MultiSpan::from_spans(spans), |lint| { - let def_id = self.tcx.hir().local_def_id(*id); - let descr = self.tcx.def_kind(def_id).descr(def_id.to_def_id()); + let descr = tcx.def_kind(first_id).descr(first_id.to_def_id()); let span_len = dead_codes.len(); - let names = match &dead_codes.iter().map(|(_, _, n)| n.to_string()).collect::<Vec<_>>()[..] - { + let names = match &names[..] { _ if span_len > 6 => String::new(), [name] => format!("`{name}` "), [names @ .., last] => { - format!("{} and `{last}` ", names.iter().map(|name| format!("`{name}`")).join(", ")) + format!( + "{} and `{last}` ", + names.iter().map(|name| format!("`{name}`")).join(", ") + ) } [] => unreachable!(), }; @@ -725,25 +701,17 @@ impl<'tcx> DeadVisitor<'tcx> { s = pluralize!(span_len), are = pluralize!("is", span_len), )); - let hir = self.tcx.hir(); - if let Some(parent_hir_id) = parent_hir_id - && let Some(parent_node) = hir.find(parent_hir_id) - && let Node::Item(item) = parent_node - { - let def_id = self.tcx.hir().local_def_id(parent_hir_id); - let parent_descr = self.tcx.def_kind(def_id).descr(def_id.to_def_id()); + + if let Some(parent_item) = parent_item { + let parent_descr = tcx.def_kind(parent_item).descr(parent_item.to_def_id()); err.span_label( - item.ident.span, - format!( - "{descr}{s} in this {parent_descr}", - s = pluralize!(span_len) - ), + tcx.def_ident_span(parent_item).unwrap(), + format!("{descr}{s} in this {parent_descr}", s = pluralize!(span_len)), ); } - if let Some(encl_scope) = hir.get_enclosing_scope(*id) - && let Some(encl_def_id) = hir.opt_local_def_id(encl_scope) - && let Some(ign_traits) = self.ignored_derived_traits.get(&encl_def_id) - { + + let encl_def_id = parent_item.unwrap_or(first_id); + if let Some(ign_traits) = self.ignored_derived_traits.get(&encl_def_id) { let traits_str = ign_traits .iter() .map(|(trait_id, _)| format!("`{}`", self.tcx.item_name(*trait_id))) @@ -764,15 +732,15 @@ impl<'tcx> DeadVisitor<'tcx> { ); err.note(&msg); } - err.emit(); - }, + err.emit(); + }, ); } } fn warn_dead_fields_and_variants( &self, - hir_id: hir::HirId, + def_id: LocalDefId, participle: &str, dead_codes: Vec<DeadVariant>, ) { @@ -787,207 +755,110 @@ impl<'tcx> DeadVisitor<'tcx> { dead_codes.sort_by_key(|v| v.level); for (_, group) in &dead_codes.into_iter().group_by(|v| v.level) { self.warn_multiple_dead_codes( - &group - .map(|v| (v.hir_id, v.span, v.name)) - .collect::<Vec<(hir::HirId, Span, Symbol)>>(), + &group.map(|v| v.def_id).collect::<Vec<_>>(), participle, - Some(hir_id), + Some(def_id), ); } } - fn warn_dead_code( - &mut self, - id: hir::HirId, - span: rustc_span::Span, - name: Symbol, - participle: &str, - ) { - self.warn_multiple_dead_codes(&[(id, span, name)], participle, None); + fn warn_dead_code(&mut self, id: LocalDefId, participle: &str) { + self.warn_multiple_dead_codes(&[id], participle, None); } -} -impl<'tcx> Visitor<'tcx> for DeadVisitor<'tcx> { - type NestedFilter = nested_filter::All; - - /// Walk nested items in place so that we don't report dead-code - /// on inner functions when the outer function is already getting - /// an error. We could do this also by checking the parents, but - /// this is how the code is setup and it seems harmless enough. - fn nested_visit_map(&mut self) -> Self::Map { - self.tcx.hir() - } - - fn visit_item(&mut self, item: &'tcx hir::Item<'tcx>) { - if self.should_warn_about_item(item) { - // For most items, we want to highlight its identifier - let span = match item.kind { - hir::ItemKind::Fn(..) - | hir::ItemKind::Mod(..) - | hir::ItemKind::Enum(..) - | hir::ItemKind::Struct(..) - | hir::ItemKind::Union(..) - | hir::ItemKind::Trait(..) - | hir::ItemKind::Impl { .. } => { - // FIXME(66095): Because item.span is annotated with things - // like expansion data, and ident.span isn't, we use the - // def_span method if it's part of a macro invocation - // (and thus has a source_callee set). - // We should probably annotate ident.span with the macro - // context, but that's a larger change. - if item.span.source_callee().is_some() { - self.tcx.sess.source_map().guess_head_span(item.span) - } else { - item.ident.span - } - } - _ => item.span, - }; - let participle = match item.kind { - hir::ItemKind::Struct(..) => "constructed", // Issue #52325 - _ => "used", - }; - self.warn_dead_code(item.hir_id(), span, item.ident.name, participle); - } else { - // Only continue if we didn't warn - intravisit::walk_item(self, item); + fn check_definition(&mut self, def_id: LocalDefId) { + if self.live_symbols.contains(&def_id) { + return; + } + let hir_id = self.tcx.hir().local_def_id_to_hir_id(def_id); + if has_allow_dead_code_or_lang_attr(self.tcx, hir_id) { + return; + } + let Some(name) = self.tcx.opt_item_name(def_id.to_def_id()) else { + return + }; + if name.as_str().starts_with('_') { + return; + } + match self.tcx.def_kind(def_id) { + DefKind::AssocConst + | DefKind::AssocFn + | DefKind::Fn + | DefKind::Static(_) + | DefKind::Const + | DefKind::TyAlias + | DefKind::Enum + | DefKind::Union + | DefKind::ForeignTy => self.warn_dead_code(def_id, "used"), + DefKind::Struct => self.warn_dead_code(def_id, "constructed"), + DefKind::Variant | DefKind::Field => bug!("should be handled specially"), + _ => {} } } +} - // This visitor should only visit a single module at a time. - fn visit_mod(&mut self, _: &'tcx hir::Mod<'tcx>, _: Span, _: hir::HirId) {} +fn check_mod_deathness(tcx: TyCtxt<'_>, module: LocalDefId) { + let (live_symbols, ignored_derived_traits) = tcx.live_symbols_and_ignored_derived_traits(()); + let mut visitor = DeadVisitor { tcx, live_symbols, ignored_derived_traits }; - fn visit_enum_def( - &mut self, - enum_definition: &'tcx hir::EnumDef<'tcx>, - generics: &'tcx hir::Generics<'tcx>, - item_id: hir::HirId, - _: Span, - ) { - intravisit::walk_enum_def(self, enum_definition, generics, item_id); - let dead_variants = enum_definition - .variants - .iter() - .filter_map(|variant| { - if self.should_warn_about_variant(&variant) { - Some(DeadVariant { - hir_id: variant.id, - span: variant.span, - name: variant.ident.name, - level: self.tcx.lint_level_at_node(lint::builtin::DEAD_CODE, variant.id).0, - }) - } else { - None - } - }) - .collect(); - self.warn_dead_fields_and_variants(item_id, "constructed", dead_variants) - } + let module_items = tcx.hir_module_items(module); - fn visit_variant( - &mut self, - variant: &'tcx hir::Variant<'tcx>, - g: &'tcx hir::Generics<'tcx>, - id: hir::HirId, - ) { - if !self.should_warn_about_variant(&variant) { - intravisit::walk_variant(self, variant, g, id); + for item in module_items.items() { + if !live_symbols.contains(&item.def_id) { + let parent = tcx.local_parent(item.def_id); + if parent != module && !live_symbols.contains(&parent) { + // We already have diagnosed something. + continue; + } + visitor.check_definition(item.def_id); + continue; } - } - fn visit_foreign_item(&mut self, fi: &'tcx hir::ForeignItem<'tcx>) { - if self.should_warn_about_foreign_item(fi) { - self.warn_dead_code(fi.hir_id(), fi.span, fi.ident.name, "used"); - } - intravisit::walk_foreign_item(self, fi); - } + let def_kind = tcx.def_kind(item.def_id); + if let DefKind::Struct | DefKind::Union | DefKind::Enum = def_kind { + let adt = tcx.adt_def(item.def_id); + let mut dead_variants = Vec::new(); - fn visit_variant_data( - &mut self, - def: &'tcx hir::VariantData<'tcx>, - _: Symbol, - _: &hir::Generics<'_>, - id: hir::HirId, - _: rustc_span::Span, - ) { - intravisit::walk_struct_def(self, def); - let dead_fields = def - .fields() - .iter() - .filter_map(|field| { - if self.should_warn_about_field(&field) { - Some(DeadVariant { - hir_id: field.hir_id, - span: field.span, - name: field.ident.name, - level: self - .tcx - .lint_level_at_node(lint::builtin::DEAD_CODE, field.hir_id) - .0, - }) - } else { - None + for variant in adt.variants() { + let def_id = variant.def_id.expect_local(); + if !live_symbols.contains(&def_id) { + // Record to group diagnostics. + let hir_id = tcx.hir().local_def_id_to_hir_id(def_id); + let level = tcx.lint_level_at_node(lint::builtin::DEAD_CODE, hir_id).0; + dead_variants.push(DeadVariant { def_id, name: variant.name, level }); + continue; } - }) - .collect(); - self.warn_dead_fields_and_variants(id, "read", dead_fields) - } - - fn visit_impl_item(&mut self, impl_item: &'tcx hir::ImplItem<'tcx>) { - match impl_item.kind { - hir::ImplItemKind::Const(_, body_id) => { - if !self.symbol_is_live(impl_item.def_id) { - self.warn_dead_code( - impl_item.hir_id(), - impl_item.span, - impl_item.ident.name, - "used", - ); - } - self.visit_nested_body(body_id) - } - hir::ImplItemKind::Fn(_, body_id) => { - if !self.symbol_is_live(impl_item.def_id) { - // FIXME(66095): Because impl_item.span is annotated with things - // like expansion data, and ident.span isn't, we use the - // def_span method if it's part of a macro invocation - // (and thus has a source_callee set). - // We should probably annotate ident.span with the macro - // context, but that's a larger change. - let span = if impl_item.span.source_callee().is_some() { - self.tcx.sess.source_map().guess_head_span(impl_item.span) - } else { - impl_item.ident.span - }; - self.warn_dead_code(impl_item.hir_id(), span, impl_item.ident.name, "used"); - } - self.visit_nested_body(body_id) + + let dead_fields = variant + .fields + .iter() + .filter_map(|field| { + let def_id = field.did.expect_local(); + let hir_id = tcx.hir().local_def_id_to_hir_id(def_id); + if visitor.should_warn_about_field(&field) { + let level = tcx.lint_level_at_node(lint::builtin::DEAD_CODE, hir_id).0; + Some(DeadVariant { def_id, name: field.name, level }) + } else { + None + } + }) + .collect(); + visitor.warn_dead_fields_and_variants(def_id, "read", dead_fields) } - hir::ImplItemKind::TyAlias(..) => {} + + visitor.warn_dead_fields_and_variants(item.def_id, "constructed", dead_variants); } } - // Overwrite so that we don't warn the trait item itself. - fn visit_trait_item(&mut self, trait_item: &'tcx hir::TraitItem<'tcx>) { - match trait_item.kind { - hir::TraitItemKind::Const(_, Some(body_id)) - | hir::TraitItemKind::Fn(_, hir::TraitFn::Provided(body_id)) => { - self.visit_nested_body(body_id) - } - hir::TraitItemKind::Const(_, None) - | hir::TraitItemKind::Fn(_, hir::TraitFn::Required(_)) - | hir::TraitItemKind::Type(..) => {} - } + for impl_item in module_items.impl_items() { + visitor.check_definition(impl_item.def_id); } -} -fn check_mod_deathness(tcx: TyCtxt<'_>, module: LocalDefId) { - let (live_symbols, ignored_derived_traits) = tcx.live_symbols_and_ignored_derived_traits(()); - let mut visitor = DeadVisitor { tcx, live_symbols, ignored_derived_traits }; - let (module, _, module_id) = tcx.hir().get_module(module); - // Do not use an ItemLikeVisitor since we may want to skip visiting some items - // when a surrounding one is warned against or `_`. - intravisit::walk_mod(&mut visitor, module, module_id); + for foreign_item in module_items.foreign_items() { + visitor.check_definition(foreign_item.def_id); + } + + // We do not warn trait items. } pub(crate) fn provide(providers: &mut Providers) { diff --git a/src/test/ui/associated-consts/associated-const-dead-code.stderr b/src/test/ui/associated-consts/associated-const-dead-code.stderr index 7a4dbfe087b..cc701cc4b94 100644 --- a/src/test/ui/associated-consts/associated-const-dead-code.stderr +++ b/src/test/ui/associated-consts/associated-const-dead-code.stderr @@ -1,8 +1,8 @@ error: associated constant `BAR` is never used - --> $DIR/associated-const-dead-code.rs:6:5 + --> $DIR/associated-const-dead-code.rs:6:11 | LL | const BAR: u32 = 1; - | ^^^^^^^^^^^^^^^^^^^ + | ^^^ | note: the lint level is defined here --> $DIR/associated-const-dead-code.rs:1:9 diff --git a/src/test/ui/closures/2229_closure_analysis/issue-87987.stderr b/src/test/ui/closures/2229_closure_analysis/issue-87987.stderr index 57b8f7ae609..5696a010c3f 100644 --- a/src/test/ui/closures/2229_closure_analysis/issue-87987.stderr +++ b/src/test/ui/closures/2229_closure_analysis/issue-87987.stderr @@ -4,9 +4,9 @@ warning: fields `field_1` and `field_2` are never read LL | struct Props { | ----- fields in this struct LL | field_1: u32, - | ^^^^^^^^^^^^ + | ^^^^^^^ LL | field_2: u32, - | ^^^^^^^^^^^^ + | ^^^^^^^ | = note: `#[warn(dead_code)]` on by default diff --git a/src/test/ui/derive-uninhabited-enum-38885.stderr b/src/test/ui/derive-uninhabited-enum-38885.stderr index 4feaf3ac961..bd36a25686a 100644 --- a/src/test/ui/derive-uninhabited-enum-38885.stderr +++ b/src/test/ui/derive-uninhabited-enum-38885.stderr @@ -5,7 +5,7 @@ LL | enum Foo { | --- variant in this enum LL | Bar(u8), LL | Void(Void), - | ^^^^^^^^^^ + | ^^^^ | = note: `-W dead-code` implied by `-W unused` = note: `Foo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis diff --git a/src/test/ui/derives/clone-debug-dead-code-in-the-same-struct.stderr b/src/test/ui/derives/clone-debug-dead-code-in-the-same-struct.stderr index 383e0b4b725..baf34b46d8b 100644 --- a/src/test/ui/derives/clone-debug-dead-code-in-the-same-struct.stderr +++ b/src/test/ui/derives/clone-debug-dead-code-in-the-same-struct.stderr @@ -5,13 +5,13 @@ LL | pub struct Whatever { | -------- fields in this struct LL | pub field0: (), LL | field1: (), - | ^^^^^^^^^^ + | ^^^^^^ LL | field2: (), - | ^^^^^^^^^^ + | ^^^^^^ LL | field3: (), - | ^^^^^^^^^^ + | ^^^^^^ LL | field4: (), - | ^^^^^^^^^^ + | ^^^^^^ | note: the lint level is defined here --> $DIR/clone-debug-dead-code-in-the-same-struct.rs:1:11 diff --git a/src/test/ui/derives/clone-debug-dead-code.stderr b/src/test/ui/derives/clone-debug-dead-code.stderr index 73a00251188..38be486e332 100644 --- a/src/test/ui/derives/clone-debug-dead-code.stderr +++ b/src/test/ui/derives/clone-debug-dead-code.stderr @@ -2,7 +2,7 @@ error: field `f` is never read --> $DIR/clone-debug-dead-code.rs:6:12 | LL | struct A { f: () } - | - ^^^^^ + | - ^ | | | field in this struct | @@ -16,7 +16,7 @@ error: field `f` is never read --> $DIR/clone-debug-dead-code.rs:10:12 | LL | struct B { f: () } - | - ^^^^^ + | - ^ | | | field in this struct | @@ -26,7 +26,7 @@ error: field `f` is never read --> $DIR/clone-debug-dead-code.rs:14:12 | LL | struct C { f: () } - | - ^^^^^ + | - ^ | | | field in this struct | @@ -36,7 +36,7 @@ error: field `f` is never read --> $DIR/clone-debug-dead-code.rs:18:12 | LL | struct D { f: () } - | - ^^^^^ + | - ^ | | | field in this struct | @@ -46,7 +46,7 @@ error: field `f` is never read --> $DIR/clone-debug-dead-code.rs:21:12 | LL | struct E { f: () } - | - ^^^^^ + | - ^ | | | field in this struct diff --git a/src/test/ui/issues/issue-37515.stderr b/src/test/ui/issues/issue-37515.stderr index c9bb4c10010..f1e83ca74d8 100644 --- a/src/test/ui/issues/issue-37515.stderr +++ b/src/test/ui/issues/issue-37515.stderr @@ -1,8 +1,8 @@ warning: type alias `Z` is never used - --> $DIR/issue-37515.rs:5:1 + --> $DIR/issue-37515.rs:5:6 | LL | type Z = dyn for<'x> Send; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^ + | ^ | note: the lint level is defined here --> $DIR/issue-37515.rs:3:9 diff --git a/src/test/ui/lint/dead-code/impl-trait.stderr b/src/test/ui/lint/dead-code/impl-trait.stderr index 9c47c1b5355..e35e13a9ec6 100644 --- a/src/test/ui/lint/dead-code/impl-trait.stderr +++ b/src/test/ui/lint/dead-code/impl-trait.stderr @@ -1,8 +1,8 @@ error: type alias `Unused` is never used - --> $DIR/impl-trait.rs:12:1 + --> $DIR/impl-trait.rs:12:6 | LL | type Unused = (); - | ^^^^^^^^^^^^^^^^^ + | ^^^^^^ | note: the lint level is defined here --> $DIR/impl-trait.rs:1:9 diff --git a/src/test/ui/lint/dead-code/issue-85255.stderr b/src/test/ui/lint/dead-code/issue-85255.stderr index 7ebbebb1aba..3497b952fdd 100644 --- a/src/test/ui/lint/dead-code/issue-85255.stderr +++ b/src/test/ui/lint/dead-code/issue-85255.stderr @@ -4,9 +4,9 @@ warning: fields `a` and `b` are never read LL | struct Foo { | --- fields in this struct LL | a: i32, - | ^^^^^^ + | ^ LL | pub b: i32, - | ^^^^^^^^^^ + | ^ | note: the lint level is defined here --> $DIR/issue-85255.rs:4:9 @@ -14,6 +14,26 @@ note: the lint level is defined here LL | #![warn(dead_code)] | ^^^^^^^^^ +warning: fields `a` and `b` are never read + --> $DIR/issue-85255.rs:19:5 + | +LL | pub(crate) struct Foo1 { + | ---- fields in this struct +LL | a: i32, + | ^ +LL | pub b: i32, + | ^ + +warning: fields `a` and `b` are never read + --> $DIR/issue-85255.rs:31:5 + | +LL | pub(crate) struct Foo2 { + | ---- fields in this struct +LL | a: i32, + | ^ +LL | pub b: i32, + | ^ + warning: associated function `a` is never used --> $DIR/issue-85255.rs:14:8 | @@ -26,16 +46,6 @@ warning: associated function `b` is never used LL | pub fn b(&self) -> i32 { 6 } | ^ -warning: fields `a` and `b` are never read - --> $DIR/issue-85255.rs:19:5 - | -LL | pub(crate) struct Foo1 { - | ---- fields in this struct -LL | a: i32, - | ^^^^^^ -LL | pub b: i32, - | ^^^^^^^^^^ - warning: associated function `a` is never used --> $DIR/issue-85255.rs:26:8 | @@ -48,16 +58,6 @@ warning: associated function `b` is never used LL | pub fn b(&self) -> i32 { 6 } | ^ -warning: fields `a` and `b` are never read - --> $DIR/issue-85255.rs:31:5 - | -LL | pub(crate) struct Foo2 { - | ---- fields in this struct -LL | a: i32, - | ^^^^^^ -LL | pub b: i32, - | ^^^^^^^^^^ - warning: associated function `a` is never used --> $DIR/issue-85255.rs:38:8 | diff --git a/src/test/ui/lint/dead-code/lint-dead-code-1.stderr b/src/test/ui/lint/dead-code/lint-dead-code-1.stderr index 2eddc4ce21c..eb728b5b930 100644 --- a/src/test/ui/lint/dead-code/lint-dead-code-1.stderr +++ b/src/test/ui/lint/dead-code/lint-dead-code-1.stderr @@ -1,8 +1,8 @@ error: static `priv_static` is never used - --> $DIR/lint-dead-code-1.rs:20:1 + --> $DIR/lint-dead-code-1.rs:20:8 | LL | static priv_static: isize = 0; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | ^^^^^^^^^^^ | note: the lint level is defined here --> $DIR/lint-dead-code-1.rs:5:9 @@ -11,10 +11,10 @@ LL | #![deny(dead_code)] | ^^^^^^^^^ error: constant `priv_const` is never used - --> $DIR/lint-dead-code-1.rs:27:1 + --> $DIR/lint-dead-code-1.rs:27:7 | LL | const priv_const: isize = 0; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | ^^^^^^^^^^ error: struct `PrivStruct` is never constructed --> $DIR/lint-dead-code-1.rs:35:8 diff --git a/src/test/ui/lint/dead-code/lint-dead-code-3.rs b/src/test/ui/lint/dead-code/lint-dead-code-3.rs index c3e56063dc3..293fcdbc5ee 100644 --- a/src/test/ui/lint/dead-code/lint-dead-code-3.rs +++ b/src/test/ui/lint/dead-code/lint-dead-code-3.rs @@ -73,7 +73,18 @@ mod inner { fn f() {} } +fn anon_const() -> [(); { + fn blah() {} //~ ERROR: function `blah` is never used + 1 +}] { + [(); { + fn blah() {} //~ ERROR: function `blah` is never used + 1 + }] +} + pub fn foo() { let a: &dyn inner::Trait = &1_isize; a.f(); + anon_const(); } diff --git a/src/test/ui/lint/dead-code/lint-dead-code-3.stderr b/src/test/ui/lint/dead-code/lint-dead-code-3.stderr index af59c6fec1f..26fc13bae08 100644 --- a/src/test/ui/lint/dead-code/lint-dead-code-3.stderr +++ b/src/test/ui/lint/dead-code/lint-dead-code-3.stderr @@ -10,12 +10,6 @@ note: the lint level is defined here LL | #![deny(dead_code)] | ^^^^^^^^^ -error: associated function `foo` is never used - --> $DIR/lint-dead-code-3.rs:16:8 - | -LL | fn foo(&self) { - | ^^^ - error: function `bar` is never used --> $DIR/lint-dead-code-3.rs:21:4 | @@ -28,11 +22,29 @@ error: enum `c_void` is never used LL | enum c_void {} | ^^^^^^ +error: function `blah` is never used + --> $DIR/lint-dead-code-3.rs:77:8 + | +LL | fn blah() {} + | ^^^^ + +error: function `blah` is never used + --> $DIR/lint-dead-code-3.rs:81:12 + | +LL | fn blah() {} + | ^^^^ + +error: associated function `foo` is never used + --> $DIR/lint-dead-code-3.rs:16:8 + | +LL | fn foo(&self) { + | ^^^ + error: function `free` is never used - --> $DIR/lint-dead-code-3.rs:62:5 + --> $DIR/lint-dead-code-3.rs:62:8 | LL | fn free(p: *const c_void); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^ + | ^^^^ -error: aborting due to 5 previous errors +error: aborting due to 7 previous errors diff --git a/src/test/ui/lint/dead-code/lint-dead-code-4.stderr b/src/test/ui/lint/dead-code/lint-dead-code-4.stderr index dcd810b3e48..668c1dacf95 100644 --- a/src/test/ui/lint/dead-code/lint-dead-code-4.stderr +++ b/src/test/ui/lint/dead-code/lint-dead-code-4.stderr @@ -5,7 +5,7 @@ LL | struct Foo { | --- field in this struct LL | x: usize, LL | b: bool, - | ^^^^^^^ + | ^ | note: the lint level is defined here --> $DIR/lint-dead-code-4.rs:3:9 @@ -16,16 +16,12 @@ LL | #![deny(dead_code)] error: variants `X` and `Y` are never constructed --> $DIR/lint-dead-code-4.rs:15:5 | -LL | enum XYZ { - | --- variants in this enum -LL | X, - | ^ -LL | / Y { -LL | | a: String, -LL | | b: i32, -LL | | c: i32, -LL | | }, - | |_____^ +LL | enum XYZ { + | --- variants in this enum +LL | X, + | ^ +LL | Y { + | ^ error: enum `ABC` is never used --> $DIR/lint-dead-code-4.rs:24:6 @@ -36,13 +32,13 @@ LL | enum ABC { error: fields `b` and `c` are never read --> $DIR/lint-dead-code-4.rs:39:9 | -LL | enum IJK { - | --- fields in this enum -... +LL | J { + | - fields in this variant +LL | a: String, LL | b: i32, - | ^^^^^^ + | ^ LL | c: i32, - | ^^^^^^ + | ^ error: variants `I` and `K` are never constructed --> $DIR/lint-dead-code-4.rs:36:5 @@ -61,10 +57,10 @@ error: fields `x` and `c` are never read LL | struct Bar { | --- fields in this struct LL | x: usize, - | ^^^^^^^^ + | ^ LL | b: bool, LL | c: bool, - | ^^^^^^^ + | ^ error: aborting due to 6 previous errors diff --git a/src/test/ui/lint/dead-code/lint-dead-code-5.stderr b/src/test/ui/lint/dead-code/lint-dead-code-5.stderr index 037a9be22ad..eaf43e45361 100644 --- a/src/test/ui/lint/dead-code/lint-dead-code-5.stderr +++ b/src/test/ui/lint/dead-code/lint-dead-code-5.stderr @@ -20,9 +20,9 @@ LL | enum Enum2 { | ----- variants in this enum ... LL | Variant5 { _x: isize }, - | ^^^^^^^^^^^^^^^^^^^^^^ + | ^^^^^^^^ LL | Variant6(isize), - | ^^^^^^^^^^^^^^^ + | ^^^^^^^^ error: enum `Enum3` is never used --> $DIR/lint-dead-code-5.rs:35:6 diff --git a/src/test/ui/lint/dead-code/multiple-dead-codes-in-the-same-struct.stderr b/src/test/ui/lint/dead-code/multiple-dead-codes-in-the-same-struct.stderr index 5cc8e06c09d..c0f1ed38f6d 100644 --- a/src/test/ui/lint/dead-code/multiple-dead-codes-in-the-same-struct.stderr +++ b/src/test/ui/lint/dead-code/multiple-dead-codes-in-the-same-struct.stderr @@ -5,12 +5,12 @@ LL | struct Bar { | --- fields in this struct ... LL | d: usize, - | ^^^^^^^^ + | ^ ... LL | f: usize, - | ^^^^^^^^ + | ^ LL | g: usize, - | ^^^^^^^^ + | ^ | note: the lint level is defined here --> $DIR/multiple-dead-codes-in-the-same-struct.rs:1:9 @@ -25,10 +25,10 @@ LL | struct Bar { | --- fields in this struct ... LL | c: usize, - | ^^^^^^^^ + | ^ ... LL | e: usize, - | ^^^^^^^^ + | ^ | note: the lint level is defined here --> $DIR/multiple-dead-codes-in-the-same-struct.rs:8:12 @@ -43,7 +43,7 @@ LL | struct Bar { | --- field in this struct ... LL | b: usize, - | ^^^^^^^^ + | ^ | note: the lint level is defined here --> $DIR/multiple-dead-codes-in-the-same-struct.rs:6:14 diff --git a/src/test/ui/lint/dead-code/type-alias.stderr b/src/test/ui/lint/dead-code/type-alias.stderr index 80c6ba962b8..446447d974a 100644 --- a/src/test/ui/lint/dead-code/type-alias.stderr +++ b/src/test/ui/lint/dead-code/type-alias.stderr @@ -1,8 +1,8 @@ error: type alias `Unused` is never used - --> $DIR/type-alias.rs:4:1 + --> $DIR/type-alias.rs:4:6 | LL | type Unused = u8; - | ^^^^^^^^^^^^^^^^^ + | ^^^^^^ | note: the lint level is defined here --> $DIR/type-alias.rs:1:9 diff --git a/src/test/ui/lint/dead-code/unused-struct-variant.stderr b/src/test/ui/lint/dead-code/unused-struct-variant.stderr index b08402b671b..d26dd3aff95 100644 --- a/src/test/ui/lint/dead-code/unused-struct-variant.stderr +++ b/src/test/ui/lint/dead-code/unused-struct-variant.stderr @@ -5,7 +5,7 @@ LL | enum E { | - variant in this enum LL | Foo(F), LL | Bar(B), - | ^^^^^^ + | ^^^ | note: the lint level is defined here --> $DIR/unused-struct-variant.rs:1:9 diff --git a/src/test/ui/lint/issue-17718-const-naming.stderr b/src/test/ui/lint/issue-17718-const-naming.stderr index 4c97f6d63d4..7d2aadd5f80 100644 --- a/src/test/ui/lint/issue-17718-const-naming.stderr +++ b/src/test/ui/lint/issue-17718-const-naming.stderr @@ -1,8 +1,8 @@ error: constant `foo` is never used - --> $DIR/issue-17718-const-naming.rs:4:1 + --> $DIR/issue-17718-const-naming.rs:4:7 | LL | const foo: isize = 3; - | ^^^^^^^^^^^^^^^^^^^^^ + | ^^^ | note: the lint level is defined here --> $DIR/issue-17718-const-naming.rs:2:9 diff --git a/src/test/ui/span/macro-span-replacement.stderr b/src/test/ui/span/macro-span-replacement.stderr index 433d02dcbe7..5dd56342889 100644 --- a/src/test/ui/span/macro-span-replacement.stderr +++ b/src/test/ui/span/macro-span-replacement.stderr @@ -1,8 +1,8 @@ warning: struct `S` is never constructed - --> $DIR/macro-span-replacement.rs:7:14 + --> $DIR/macro-span-replacement.rs:7:12 | LL | $b $a; - | ^ + | ^^ ... LL | m!(S struct); | ------------ in this macro invocation diff --git a/src/test/ui/union/union-fields-1.mirunsafeck.stderr b/src/test/ui/union/union-fields-1.mirunsafeck.stderr index 5b932b9626c..0c9981c69fc 100644 --- a/src/test/ui/union/union-fields-1.mirunsafeck.stderr +++ b/src/test/ui/union/union-fields-1.mirunsafeck.stderr @@ -5,7 +5,7 @@ LL | union U1 { | -- field in this union ... LL | c: u8, - | ^^^^^ + | ^ | note: the lint level is defined here --> $DIR/union-fields-1.rs:4:9 @@ -19,13 +19,13 @@ error: field `a` is never read LL | union U2 { | -- field in this union LL | a: u8, - | ^^^^^ + | ^ error: field `a` is never read --> $DIR/union-fields-1.rs:16:20 | LL | union NoDropLike { a: u8 } - | ---------- ^^^^^ + | ---------- ^ | | | field in this union @@ -36,7 +36,7 @@ LL | union U { | - field in this union ... LL | c: u8, - | ^^^^^ + | ^ error: aborting due to 4 previous errors diff --git a/src/test/ui/union/union-fields-1.thirunsafeck.stderr b/src/test/ui/union/union-fields-1.thirunsafeck.stderr index 5b932b9626c..0c9981c69fc 100644 --- a/src/test/ui/union/union-fields-1.thirunsafeck.stderr +++ b/src/test/ui/union/union-fields-1.thirunsafeck.stderr @@ -5,7 +5,7 @@ LL | union U1 { | -- field in this union ... LL | c: u8, - | ^^^^^ + | ^ | note: the lint level is defined here --> $DIR/union-fields-1.rs:4:9 @@ -19,13 +19,13 @@ error: field `a` is never read LL | union U2 { | -- field in this union LL | a: u8, - | ^^^^^ + | ^ error: field `a` is never read --> $DIR/union-fields-1.rs:16:20 | LL | union NoDropLike { a: u8 } - | ---------- ^^^^^ + | ---------- ^ | | | field in this union @@ -36,7 +36,7 @@ LL | union U { | - field in this union ... LL | c: u8, - | ^^^^^ + | ^ error: aborting due to 4 previous errors diff --git a/src/test/ui/union/union-lint-dead-code.mirunsafeck.stderr b/src/test/ui/union/union-lint-dead-code.mirunsafeck.stderr index f6e515f8400..6e21584c37c 100644 --- a/src/test/ui/union/union-lint-dead-code.mirunsafeck.stderr +++ b/src/test/ui/union/union-lint-dead-code.mirunsafeck.stderr @@ -5,7 +5,7 @@ LL | union Foo { | --- field in this union LL | x: usize, LL | b: bool, - | ^^^^^^^ + | ^ | note: the lint level is defined here --> $DIR/union-lint-dead-code.rs:4:9 diff --git a/src/test/ui/union/union-lint-dead-code.thirunsafeck.stderr b/src/test/ui/union/union-lint-dead-code.thirunsafeck.stderr index f6e515f8400..6e21584c37c 100644 --- a/src/test/ui/union/union-lint-dead-code.thirunsafeck.stderr +++ b/src/test/ui/union/union-lint-dead-code.thirunsafeck.stderr @@ -5,7 +5,7 @@ LL | union Foo { | --- field in this union LL | x: usize, LL | b: bool, - | ^^^^^^^ + | ^ | note: the lint level is defined here --> $DIR/union-lint-dead-code.rs:4:9 |