Rustup

Cargo.toml

@@ -37,7 +37,7 @@ toml = "0.7.3"
 walkdir = "2.3"
 # This is used by the `collect-metadata` alias.
 filetime = "0.2"
-itertools = "0.10.1"
+itertools = "0.11"
 
 # UI test dependencies
 clippy_utils = { path = "clippy_utils" }

clippy_dev/Cargo.toml

@@ -7,7 +7,7 @@ edition = "2021"
 aho-corasick = "0.7"
 clap = "4.1.4"
 indoc = "1.0"
-itertools = "0.10.1"
+itertools = "0.11"
 opener = "0.5"
 shell-escape = "0.1"
 walkdir = "2.3"

clippy_lints/Cargo.toml

@@ -14,7 +14,7 @@ cargo_metadata = "0.15.3"
 clippy_config = { path = "../clippy_config" }
 clippy_utils = { path = "../clippy_utils" }
 declare_clippy_lint = { path = "../declare_clippy_lint" }
-itertools = "0.10.1"
+itertools = "0.11"
 quine-mc_cluskey = "0.2"
 regex-syntax = "0.7"
 serde = { version = "1.0", features = ["derive"] }

clippy_lints/src/booleans.rs

@@ -424,8 +424,9 @@ impl<'a, 'tcx> NonminimalBoolVisitor<'a, 'tcx> {
                     improvements.push(suggestion);
                 }
             }
-            let nonminimal_bool_lint = |suggestions: Vec<_>| {
+            let nonminimal_bool_lint = |mut suggestions: Vec<_>| {
                 if self.cx.tcx.lint_level_at_node(NONMINIMAL_BOOL, e.hir_id).0 != Level::Allow {
+                    suggestions.sort();
                     span_lint_hir_and_then(
                         self.cx,
                         NONMINIMAL_BOOL,

clippy_lints/src/dereference.rs

@@ -771,7 +771,7 @@ impl TyCoercionStability {
             DefinedTy::Mir(ty) => Self::for_mir_ty(
                 cx.tcx,
                 ty.param_env,
-                cx.tcx.erase_late_bound_regions(ty.value),
+                cx.tcx.instantiate_bound_regions_with_erased(ty.value),
                 for_return,
             ),
         }

clippy_lints/src/derive.rs

@@ -255,7 +255,7 @@ fn check_hash_peq<'tcx>(
                     "you are deriving `Hash` but have implemented `PartialEq` explicitly",
                     |diag| {
                         if let Some(local_def_id) = impl_id.as_local() {
-                            let hir_id = cx.tcx.hir().local_def_id_to_hir_id(local_def_id);
+                            let hir_id = cx.tcx.local_def_id_to_hir_id(local_def_id);
                             diag.span_note(cx.tcx.hir().span(hir_id), "`PartialEq` implemented here");
                         }
                     },
@@ -299,7 +299,7 @@ fn check_ord_partial_ord<'tcx>(
 
                 span_lint_and_then(cx, DERIVE_ORD_XOR_PARTIAL_ORD, span, mess, |diag| {
                     if let Some(local_def_id) = impl_id.as_local() {
-                        let hir_id = cx.tcx.hir().local_def_id_to_hir_id(local_def_id);
+                        let hir_id = cx.tcx.local_def_id_to_hir_id(local_def_id);
                         diag.span_note(cx.tcx.hir().span(hir_id), "`PartialOrd` implemented here");
                     }
                 });
@@ -381,7 +381,7 @@ fn check_unsafe_derive_deserialize<'tcx>(
         && match_def_path(cx, trait_def_id, &paths::SERDE_DESERIALIZE)
         && let ty::Adt(def, _) = ty.kind()
         && let Some(local_def_id) = def.did().as_local()
-        && let adt_hir_id = cx.tcx.hir().local_def_id_to_hir_id(local_def_id)
+        && let adt_hir_id = cx.tcx.local_def_id_to_hir_id(local_def_id)
         && !is_lint_allowed(cx, UNSAFE_DERIVE_DESERIALIZE, adt_hir_id)
         && cx
             .tcx

clippy_lints/src/equatable_if_let.rs

@@ -46,9 +46,12 @@ fn unary_pattern(pat: &Pat<'_>) -> bool {
         pats.iter().all(unary_pattern)
     }
     match &pat.kind {
-        PatKind::Slice(_, _, _) | PatKind::Range(_, _, _) | PatKind::Binding(..) | PatKind::Wild | PatKind::Or(_) => {
-            false
-        },
+        PatKind::Slice(_, _, _)
+        | PatKind::Range(_, _, _)
+        | PatKind::Binding(..)
+        | PatKind::Wild
+        | PatKind::Never
+        | PatKind::Or(_) => false,
         PatKind::Struct(_, a, etc) => !etc && a.iter().all(|x| unary_pattern(x.pat)),
         PatKind::Tuple(a, etc) | PatKind::TupleStruct(_, a, etc) => etc.as_opt_usize().is_none() && array_rec(a),
         PatKind::Ref(x, _) | PatKind::Box(x) => unary_pattern(x),

clippy_lints/src/error_impl_error.rs

@@ -58,7 +58,7 @@ impl<'tcx> LateLintPass<'tcx> for ErrorImplError {
                 if let Some(trait_def_id) = imp.of_trait.and_then(|t| t.trait_def_id())
                     && error_def_id == trait_def_id
                     && let Some(def_id) = path_res(cx, imp.self_ty).opt_def_id().and_then(DefId::as_local)
-                    && let hir_id = cx.tcx.hir().local_def_id_to_hir_id(def_id)
+                    && let hir_id = cx.tcx.local_def_id_to_hir_id(def_id)
                     && let Some(ident) = cx.tcx.opt_item_ident(def_id.to_def_id())
                     && ident.name == sym::Error
                     && is_visible_outside_module(cx, def_id) =>

clippy_lints/src/escape.rs

@@ -74,7 +74,7 @@ impl<'tcx> LateLintPass<'tcx> for BoxedLocal {
         let parent_id = cx
             .tcx
             .hir()
-            .get_parent_item(cx.tcx.hir().local_def_id_to_hir_id(fn_def_id))
+            .get_parent_item(cx.tcx.local_def_id_to_hir_id(fn_def_id))
             .def_id;
         let parent_node = cx.tcx.hir().find_by_def_id(parent_id);
 

clippy_lints/src/excessive_bools.rs

@@ -171,7 +171,7 @@ impl<'tcx> LateLintPass<'tcx> for ExcessiveBools {
         span: Span,
         def_id: LocalDefId,
     ) {
-        let hir_id = cx.tcx.hir().local_def_id_to_hir_id(def_id);
+        let hir_id = cx.tcx.local_def_id_to_hir_id(def_id);
         if let Some(fn_header) = fn_kind.header()
             && fn_header.abi == Abi::Rust
             && get_parent_as_impl(cx.tcx, hir_id).map_or(true, |impl_item| impl_item.of_trait.is_none())

clippy_lints/src/formatting.rs

@@ -1,7 +1,7 @@
 use clippy_utils::diagnostics::{span_lint_and_help, span_lint_and_note};
 use clippy_utils::is_span_if;
 use clippy_utils::source::snippet_opt;
-use rustc_ast::ast::{BinOpKind, Block, Expr, ExprKind, StmtKind, UnOp};
+use rustc_ast::ast::{BinOpKind, Block, Expr, ExprKind, StmtKind};
 use rustc_lint::{EarlyContext, EarlyLintPass, LintContext};
 use rustc_middle::lint::in_external_macro;
 use rustc_session::declare_lint_pass;
@@ -144,7 +144,7 @@ fn check_assign(cx: &EarlyContext<'_>, expr: &Expr) {
             let eq_span = lhs.span.between(rhs.span);
             if let ExprKind::Unary(op, ref sub_rhs) = rhs.kind {
                 if let Some(eq_snippet) = snippet_opt(cx, eq_span) {
-                    let op = UnOp::to_string(op);
+                    let op = op.as_str();
                     let eqop_span = lhs.span.between(sub_rhs.span);
                     if eq_snippet.ends_with('=') {
                         span_lint_and_note(
@@ -177,11 +177,11 @@ fn check_unop(cx: &EarlyContext<'_>, expr: &Expr) {
         && let unop_operand_span = rhs.span.until(un_rhs.span)
         && let Some(binop_snippet) = snippet_opt(cx, binop_span)
         && let Some(unop_operand_snippet) = snippet_opt(cx, unop_operand_span)
-        && let binop_str = BinOpKind::to_string(&binop.node)
+        && let binop_str = binop.node.as_str()
         // no space after BinOp operator and space after UnOp operator
         && binop_snippet.ends_with(binop_str) && unop_operand_snippet.ends_with(' ')
     {
-        let unop_str = UnOp::to_string(op);
+        let unop_str = op.as_str();
         let eqop_span = lhs.span.between(un_rhs.span);
         span_lint_and_help(
             cx,

clippy_lints/src/functions/mod.rs

@@ -407,7 +407,7 @@ impl<'tcx> LateLintPass<'tcx> for Functions {
         span: Span,
         def_id: LocalDefId,
     ) {
-        let hir_id = cx.tcx.hir().local_def_id_to_hir_id(def_id);
+        let hir_id = cx.tcx.local_def_id_to_hir_id(def_id);
         too_many_arguments::check_fn(cx, kind, decl, span, hir_id, self.too_many_arguments_threshold);
         too_many_lines::check_fn(cx, kind, span, body, self.too_many_lines_threshold);
         not_unsafe_ptr_arg_deref::check_fn(cx, kind, decl, body, def_id);

clippy_lints/src/functions/result.rs

@@ -23,7 +23,7 @@ fn result_err_ty<'tcx>(
         && let hir::FnRetTy::Return(hir_ty) = decl.output
         && let ty = cx
             .tcx
-            .erase_late_bound_regions(cx.tcx.fn_sig(id).instantiate_identity().output())
+            .instantiate_bound_regions_with_erased(cx.tcx.fn_sig(id).instantiate_identity().output())
         && is_type_diagnostic_item(cx, ty, sym::Result)
         && let ty::Adt(_, args) = ty.kind()
     {

clippy_lints/src/future_not_send.rs

@@ -62,7 +62,7 @@ impl<'tcx> LateLintPass<'tcx> for FutureNotSend {
         if let FnKind::Closure = kind {
             return;
         }
-        let ret_ty = return_ty(cx, cx.tcx.hir().local_def_id_to_hir_id(fn_def_id).expect_owner());
+        let ret_ty = return_ty(cx, cx.tcx.local_def_id_to_hir_id(fn_def_id).expect_owner());
         if let ty::Alias(ty::Opaque, AliasTy { def_id, args, .. }) = *ret_ty.kind() {
             let preds = cx.tcx.explicit_item_bounds(def_id);
             let mut is_future = false;

clippy_lints/src/inherent_impl.rs

@@ -63,7 +63,7 @@ impl<'tcx> LateLintPass<'tcx> for MultipleInherentImpl {
             && !is_lint_allowed(
                 cx,
                 MULTIPLE_INHERENT_IMPL,
-                cx.tcx.hir().local_def_id_to_hir_id(id),
+                cx.tcx.local_def_id_to_hir_id(id),
             )
         }) {
             for impl_id in impl_ids.iter().map(|id| id.expect_local()) {
@@ -117,7 +117,7 @@ impl<'tcx> LateLintPass<'tcx> for MultipleInherentImpl {
 
 /// Gets the span for the given impl block unless it's not being considered by the lint.
 fn get_impl_span(cx: &LateContext<'_>, id: LocalDefId) -> Option<Span> {
-    let id = cx.tcx.hir().local_def_id_to_hir_id(id);
+    let id = cx.tcx.local_def_id_to_hir_id(id);
     if let Node::Item(&Item {
         kind: ItemKind::Impl(impl_item),
         span,

clippy_lints/src/iter_not_returning_iterator.rs

@@ -71,7 +71,7 @@ fn check_sig(cx: &LateContext<'_>, name: &str, sig: &FnSig<'_>, fn_id: LocalDefI
     if sig.decl.implicit_self.has_implicit_self() {
         let ret_ty = cx
             .tcx
-            .erase_late_bound_regions(cx.tcx.fn_sig(fn_id).instantiate_identity().output());
+            .instantiate_bound_regions_with_erased(cx.tcx.fn_sig(fn_id).instantiate_identity().output());
         let ret_ty = cx
             .tcx
             .try_normalize_erasing_regions(cx.param_env, ret_ty)

clippy_lints/src/len_zero.rs

@@ -142,7 +142,7 @@ impl<'tcx> LateLintPass<'tcx> for LenZero {
             && let TyKind::Path(ty_path) = &imp.self_ty.kind
             && let Some(ty_id) = cx.qpath_res(ty_path, imp.self_ty.hir_id).opt_def_id()
             && let Some(local_id) = ty_id.as_local()
-            && let ty_hir_id = cx.tcx.hir().local_def_id_to_hir_id(local_id)
+            && let ty_hir_id = cx.tcx.local_def_id_to_hir_id(local_id)
             && !is_lint_allowed(cx, LEN_WITHOUT_IS_EMPTY, ty_hir_id)
             && let Some(output) =
                 parse_len_output(cx, cx.tcx.fn_sig(item.owner_id).instantiate_identity().skip_binder())

clippy_lints/src/manual_non_exhaustive.rs

@@ -188,7 +188,7 @@ impl<'tcx> LateLintPass<'tcx> for ManualNonExhaustiveEnum {
                     .contains(&(enum_id.to_def_id(), variant_id.to_def_id()))
             })
         {
-            let hir_id = cx.tcx.hir().local_def_id_to_hir_id(enum_id);
+            let hir_id = cx.tcx.local_def_id_to_hir_id(enum_id);
             span_lint_hir_and_then(
                 cx,
                 MANUAL_NON_EXHAUSTIVE,

clippy_lints/src/matches/match_same_arms.rs

@@ -152,6 +152,7 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, arms: &'tcx [Arm<'_>]) {
 #[derive(Clone, Copy)]
 enum NormalizedPat<'a> {
     Wild,
+    Never,
     Struct(Option<DefId>, &'a [(Symbol, Self)]),
     Tuple(Option<DefId>, &'a [Self]),
     Or(&'a [Self]),
@@ -223,14 +224,15 @@ fn iter_matching_struct_fields<'a>(
     Iter(left.iter(), right.iter())
 }
 
-#[expect(clippy::similar_names)]
+#[expect(clippy::similar_names, clippy::too_many_lines)]
 impl<'a> NormalizedPat<'a> {
     fn from_pat(cx: &LateContext<'_>, arena: &'a DroplessArena, pat: &'a Pat<'_>) -> Self {
         match pat.kind {
             PatKind::Wild | PatKind::Binding(.., None) => Self::Wild,
             PatKind::Binding(.., Some(pat)) | PatKind::Box(pat) | PatKind::Ref(pat, _) => {
                 Self::from_pat(cx, arena, pat)
             },
+            PatKind::Never => Self::Never,
             PatKind::Struct(ref path, fields, _) => {
                 let fields =
                     arena.alloc_from_iter(fields.iter().map(|f| (f.ident.name, Self::from_pat(cx, arena, f.pat))));
@@ -334,7 +336,7 @@ impl<'a> NormalizedPat<'a> {
     /// type.
     fn has_overlapping_values(&self, other: &Self) -> bool {
         match (*self, *other) {
-            (Self::Wild, _) | (_, Self::Wild) => true,
+            (Self::Wild, _) | (_, Self::Wild) | (Self::Never, Self::Never) => true,
             (Self::Or(pats), ref other) | (ref other, Self::Or(pats)) => {
                 pats.iter().any(|pat| pat.has_overlapping_values(other))
             },

clippy_lints/src/methods/clone_on_copy.rs

@@ -61,7 +61,7 @@ pub(super) fn check(
                 // ? is a Call, makes sure not to rec *x?, but rather (*x)?
                 ExprKind::Call(hir_callee, _) => matches!(
                     hir_callee.kind,
-                    ExprKind::Path(QPath::LangItem(rustc_hir::LangItem::TryTraitBranch, _, _))
+                    ExprKind::Path(QPath::LangItem(rustc_hir::LangItem::TryTraitBranch, ..))
                 ),
                 ExprKind::MethodCall(_, self_arg, ..) if expr.hir_id == self_arg.hir_id => true,
                 ExprKind::Match(_, _, MatchSource::TryDesugar(_) | MatchSource::AwaitDesugar)

clippy_lints/src/methods/filter_map_bool_then.rs

@@ -27,7 +27,7 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>, arg: &
             closure.def_id.to_def_id(),
             Binder::bind_with_vars(
                 cx.typeck_results().node_type(param_ty.hir_id),
-                cx.tcx.late_bound_vars(cx.tcx.hir().local_def_id_to_hir_id(closure.def_id)),
+                cx.tcx.late_bound_vars(cx.tcx.local_def_id_to_hir_id(closure.def_id)),
             ),
         )
         && is_copy(cx, param_ty)

clippy_lints/src/methods/map_flatten.rs

@@ -63,7 +63,7 @@ fn is_map_to_option(cx: &LateContext<'_>, map_arg: &Expr<'_>) -> bool {
                 ty::Closure(_, args) => args.as_closure().sig(),
                 _ => map_closure_ty.fn_sig(cx.tcx),
             };
-            let map_closure_return_ty = cx.tcx.erase_late_bound_regions(map_closure_sig.output());
+            let map_closure_return_ty = cx.tcx.instantiate_bound_regions_with_erased(map_closure_sig.output());
             is_type_diagnostic_item(cx, map_closure_return_ty, sym::Option)
         },
         _ => false,

clippy_lints/src/methods/mod.rs

@@ -3969,7 +3969,7 @@ impl<'tcx> LateLintPass<'tcx> for Methods {
         let implements_trait = matches!(item.kind, hir::ItemKind::Impl(hir::Impl { of_trait: Some(_), .. }));
         if let hir::ImplItemKind::Fn(ref sig, id) = impl_item.kind {
             let method_sig = cx.tcx.fn_sig(impl_item.owner_id).instantiate_identity();
-            let method_sig = cx.tcx.erase_late_bound_regions(method_sig);
+            let method_sig = cx.tcx.instantiate_bound_regions_with_erased(method_sig);
             let first_arg_ty_opt = method_sig.inputs().iter().next().copied();
             // if this impl block implements a trait, lint in trait definition instead
             if !implements_trait && cx.effective_visibilities.is_exported(impl_item.owner_id.def_id) {

clippy_lints/src/methods/needless_collect.rs

@@ -225,7 +225,10 @@ fn is_contains_sig(cx: &LateContext<'_>, call_id: HirId, iter_expr: &Expr<'_>) -
         && let sig = cx.tcx.fn_sig(id).instantiate_identity()
         && sig.skip_binder().output().is_bool()
         && let [_, search_ty] = *sig.skip_binder().inputs()
-        && let ty::Ref(_, search_ty, Mutability::Not) = *cx.tcx.erase_late_bound_regions(sig.rebind(search_ty)).kind()
+        && let ty::Ref(_, search_ty, Mutability::Not) = *cx
+            .tcx
+            .instantiate_bound_regions_with_erased(sig.rebind(search_ty))
+            .kind()
         && let Some(iter_trait) = cx.tcx.get_diagnostic_item(sym::Iterator)
         && let Some(iter_item) = cx.tcx.associated_items(iter_trait).find_by_name_and_kind(
             cx.tcx,

clippy_lints/src/missing_const_for_fn.rs

@@ -131,7 +131,7 @@ impl<'tcx> LateLintPass<'tcx> for MissingConstForFn {
             FnKind::Closure => return,
         }
 
-        let hir_id = cx.tcx.hir().local_def_id_to_hir_id(def_id);
+        let hir_id = cx.tcx.local_def_id_to_hir_id(def_id);
 
         // Const fns are not allowed as methods in a trait.
         {

clippy_lints/src/mixed_read_write_in_expression.rs

@@ -165,7 +165,7 @@ impl<'a, 'tcx> Visitor<'tcx> for DivergenceVisitor<'a, 'tcx> {
                 match typ.kind() {
                     ty::FnDef(..) | ty::FnPtr(_) => {
                         let sig = typ.fn_sig(self.cx.tcx);
-                        if self.cx.tcx.erase_late_bound_regions(sig).output().kind() == &ty::Never {
+                        if self.cx.tcx.instantiate_bound_regions_with_erased(sig).output().kind() == &ty::Never {
                             self.report_diverging_sub_expr(e);
                         }
                     },

clippy_lints/src/mut_key.rs

@@ -143,7 +143,11 @@ impl MutableKeyType {
         for (hir_ty, ty) in iter::zip(decl.inputs, fn_sig.inputs().skip_binder()) {
             self.check_ty_(cx, hir_ty.span, *ty);
         }
-        self.check_ty_(cx, decl.output.span(), cx.tcx.erase_late_bound_regions(fn_sig.output()));
+        self.check_ty_(
+            cx,
+            decl.output.span(),
+            cx.tcx.instantiate_bound_regions_with_erased(fn_sig.output()),
+        );
     }
 
     // We want to lint 1. sets or maps with 2. not immutable key types and 3. no unerased

clippy_lints/src/needless_pass_by_ref_mut.rs

@@ -137,7 +137,7 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessPassByRefMut<'tcx> {
             return;
         }
 
-        let hir_id = cx.tcx.hir().local_def_id_to_hir_id(fn_def_id);
+        let hir_id = cx.tcx.local_def_id_to_hir_id(fn_def_id);
         let is_async = match kind {
             FnKind::ItemFn(.., header) => {
                 if header.is_unsafe() {
@@ -256,7 +256,7 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessPassByRefMut<'tcx> {
                     span_lint_hir_and_then(
                         cx,
                         NEEDLESS_PASS_BY_REF_MUT,
-                        cx.tcx.hir().local_def_id_to_hir_id(*fn_def_id),
+                        cx.tcx.local_def_id_to_hir_id(*fn_def_id),
                         sp,
                         "this argument is a mutable reference, but not used mutably",
                         |diag| {

clippy_lints/src/needless_pass_by_value.rs

@@ -86,7 +86,7 @@ impl<'tcx> LateLintPass<'tcx> for NeedlessPassByValue {
             return;
         }
 
-        let hir_id = cx.tcx.hir().local_def_id_to_hir_id(fn_def_id);
+        let hir_id = cx.tcx.local_def_id_to_hir_id(fn_def_id);
 
         match kind {
             FnKind::ItemFn(.., header) => {

clippy_lints/src/new_without_default.rs

@@ -106,7 +106,7 @@ impl<'tcx> LateLintPass<'tcx> for NewWithoutDefault {
                                     let ty = cx.tcx.type_of(d).instantiate_identity();
                                     if let Some(ty_def) = ty.ty_adt_def() {
                                         if let Some(local_def_id) = ty_def.did().as_local() {
-                                            impls.insert(cx.tcx.hir().local_def_id_to_hir_id(local_def_id));
+                                            impls.insert(cx.tcx.local_def_id_to_hir_id(local_def_id));
                                         }
                                     }
                                 });
@@ -119,7 +119,7 @@ impl<'tcx> LateLintPass<'tcx> for NewWithoutDefault {
                                 && let self_def = cx.tcx.type_of(self_def_id).instantiate_identity()
                                 && let Some(self_def) = self_def.ty_adt_def()
                                 && let Some(self_local_did) = self_def.did().as_local()
-                                && let self_id = cx.tcx.hir().local_def_id_to_hir_id(self_local_did)
+                                && let self_id = cx.tcx.local_def_id_to_hir_id(self_local_did)
                                 && impling_types.contains(&self_id)
                             {
                                 return;

clippy_lints/src/non_send_fields_in_send_ty.rs

@@ -100,7 +100,7 @@ impl<'tcx> LateLintPass<'tcx> for NonSendFieldInSendTy {
                     if let Some(field_hir_id) = field
                         .did
                         .as_local()
-                        .map(|local_def_id| hir_map.local_def_id_to_hir_id(local_def_id))
+                        .map(|local_def_id| cx.tcx.local_def_id_to_hir_id(local_def_id))
                         && !is_lint_allowed(cx, NON_SEND_FIELDS_IN_SEND_TY, field_hir_id)
                         && let field_ty = field.ty(cx.tcx, impl_trait_args)
                         && !ty_allowed_in_send(cx, field_ty, send_trait)