Rustup

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "clippy"
-version = "0.1.91"
+version = "0.1.92"
 description = "A bunch of helpful lints to avoid common pitfalls in Rust"
 repository = "https://github.com/rust-lang/rust-clippy"
 readme = "README.md"

clippy_config/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "clippy_config"
-version = "0.1.91"
+version = "0.1.92"
 edition = "2024"
 publish = false
 

clippy_lints/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "clippy_lints"
-version = "0.1.91"
+version = "0.1.92"
 description = "A bunch of helpful lints to avoid common pitfalls in Rust"
 repository = "https://github.com/rust-lang/rust-clippy"
 readme = "README.md"

clippy_lints/src/dereference.rs

@@ -363,7 +363,7 @@ impl<'tcx> LateLintPass<'tcx> for Dereferencing<'tcx> {
                                 //   priority.
                                 if let Some(fn_id) = typeck.type_dependent_def_id(hir_id)
                                     && let Some(trait_id) = cx.tcx.trait_of_assoc(fn_id)
-                                    && let arg_ty = cx.tcx.erase_regions(adjusted_ty)
+                                    && let arg_ty = cx.tcx.erase_and_anonymize_regions(adjusted_ty)
                                     && let ty::Ref(_, sub_ty, _) = *arg_ty.kind()
                                     && let args =
                                         typeck.node_args_opt(hir_id).map(|args| &args[1..]).unwrap_or_default()

clippy_lints/src/disallowed_macros.rs

@@ -7,7 +7,8 @@ use rustc_data_structures::fx::FxHashSet;
 use rustc_hir::def::DefKind;
 use rustc_hir::def_id::DefIdMap;
 use rustc_hir::{
-    AmbigArg, Expr, ExprKind, ForeignItem, HirId, ImplItem, Item, ItemKind, OwnerId, Pat, Path, Stmt, TraitItem, Ty,
+    AmbigArg, Expr, ExprKind, ForeignItem, HirId, ImplItem, ImplItemImplKind, Item, ItemKind, OwnerId, Pat, Path, Stmt,
+    TraitItem, Ty,
 };
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::ty::TyCtxt;
@@ -176,7 +177,9 @@ impl LateLintPass<'_> for DisallowedMacros {
 
     fn check_impl_item(&mut self, cx: &LateContext<'_>, item: &ImplItem<'_>) {
         self.check(cx, item.span, None);
-        self.check(cx, item.vis_span, None);
+        if let ImplItemImplKind::Inherent { vis_span, .. } = item.impl_kind {
+            self.check(cx, vis_span, None);
+        }
     }
 
     fn check_trait_item(&mut self, cx: &LateContext<'_>, item: &TraitItem<'_>) {

clippy_lints/src/doc/needless_doctest_main.rs

@@ -8,6 +8,7 @@ use rustc_ast::{CoroutineKind, Fn, FnRetTy, Item, ItemKind};
 use rustc_errors::emitter::HumanEmitter;
 use rustc_errors::{Diag, DiagCtxt};
 use rustc_lint::LateContext;
+use rustc_parse::lexer::StripTokens;
 use rustc_parse::new_parser_from_source_str;
 use rustc_parse::parser::ForceCollect;
 use rustc_session::parse::ParseSess;
@@ -49,13 +50,14 @@ pub fn check(
                 let sm = Arc::new(SourceMap::new(FilePathMapping::empty()));
                 let psess = ParseSess::with_dcx(dcx, sm);
 
-                let mut parser = match new_parser_from_source_str(&psess, filename, code) {
-                    Ok(p) => p,
-                    Err(errs) => {
-                        errs.into_iter().for_each(Diag::cancel);
-                        return (false, test_attr_spans);
-                    },
-                };
+                let mut parser =
+                    match new_parser_from_source_str(&psess, filename, code, StripTokens::ShebangAndFrontmatter) {
+                        Ok(p) => p,
+                        Err(errs) => {
+                            errs.into_iter().for_each(Diag::cancel);
+                            return (false, test_attr_spans);
+                        },
+                    };
 
                 let mut relevant_main_found = false;
                 let mut eligible = true;

clippy_lints/src/functions/renamed_function_params.rs

@@ -1,7 +1,6 @@
 use clippy_utils::diagnostics::span_lint_and_then;
 use rustc_errors::{Applicability, MultiSpan};
-use rustc_hir::def_id::{DefId, DefIdSet};
-use rustc_hir::hir_id::OwnerId;
+use rustc_hir::def_id::DefIdSet;
 use rustc_hir::{Impl, ImplItem, ImplItemKind, ItemKind, Node, TraitRef};
 use rustc_lint::LateContext;
 use rustc_span::Span;
@@ -19,7 +18,7 @@ pub(super) fn check_impl_item(cx: &LateContext<'_>, item: &ImplItem<'_>, ignored
             of_trait: Some(of_trait),
             ..
         }) = &parent_item.kind
-        && let Some(did) = trait_item_def_id_of_impl(cx, item.owner_id)
+        && let Some(did) = cx.tcx.trait_item_of(item.owner_id)
         && !is_from_ignored_trait(&of_trait.trait_ref, ignored_traits)
     {
         let mut param_idents_iter = cx.tcx.hir_body_param_idents(body_id);
@@ -87,11 +86,6 @@ impl RenamedFnArgs {
     }
 }
 
-/// Get the [`trait_item_def_id`](ImplItemRef::trait_item_def_id) of a relevant impl item.
-fn trait_item_def_id_of_impl(cx: &LateContext<'_>, target: OwnerId) -> Option<DefId> {
-    cx.tcx.associated_item(target).trait_item_def_id
-}
-
 fn is_from_ignored_trait(of_trait: &TraitRef<'_>, ignored_traits: &DefIdSet) -> bool {
     of_trait
         .trait_def_id()

clippy_lints/src/loops/explicit_iter_loop.rs

@@ -138,9 +138,9 @@ fn is_ref_iterable<'tcx>(
             return Some((AdjustKind::None, self_ty));
         }
 
-        let res_ty = cx
-            .tcx
-            .erase_regions(EarlyBinder::bind(req_res_ty).instantiate(cx.tcx, typeck.node_args(call_expr.hir_id)));
+        let res_ty = cx.tcx.erase_and_anonymize_regions(
+            EarlyBinder::bind(req_res_ty).instantiate(cx.tcx, typeck.node_args(call_expr.hir_id)),
+        );
         let mutbl = if let ty::Ref(_, _, mutbl) = *req_self_ty.kind() {
             Some(mutbl)
         } else {

clippy_lints/src/manual_async_fn.rs

@@ -4,7 +4,7 @@ use rustc_errors::Applicability;
 use rustc_hir::intravisit::FnKind;
 use rustc_hir::{
     Block, Body, Closure, ClosureKind, CoroutineDesugaring, CoroutineKind, CoroutineSource, Expr, ExprKind, FnDecl,
-    FnRetTy, GenericBound, ImplItem, Item, Node, OpaqueTy, TraitRef, Ty, TyKind,
+    FnRetTy, GenericBound, Node, OpaqueTy, TraitRef, Ty, TyKind,
 };
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::middle::resolve_bound_vars::ResolvedArg;
@@ -60,8 +60,11 @@ impl<'tcx> LateLintPass<'tcx> for ManualAsyncFn {
             && let ExprKind::Block(block, _) = body.value.kind
             && block.stmts.is_empty()
             && let Some(closure_body) = desugared_async_block(cx, block)
-            && let Node::Item(Item {vis_span, ..}) | Node::ImplItem(ImplItem {vis_span, ..}) =
-                cx.tcx.hir_node_by_def_id(fn_def_id)
+            && let Some(vis_span_opt) = match cx.tcx.hir_node_by_def_id(fn_def_id) {
+                Node::Item(item) => Some(Some(item.vis_span)),
+                Node::ImplItem(impl_item) => Some(impl_item.vis_span()),
+                _ => None,
+            }
             && !span.from_expansion()
         {
             let header_span = span.with_hi(ret_ty.span.hi());
@@ -72,7 +75,8 @@ impl<'tcx> LateLintPass<'tcx> for ManualAsyncFn {
                 header_span,
                 "this function can be simplified using the `async fn` syntax",
                 |diag| {
-                    if let Some(vis_snip) = vis_span.get_source_text(cx)
+                    if let Some(vis_span) = vis_span_opt
+                        && let Some(vis_snip) = vis_span.get_source_text(cx)
                         && let Some(header_snip) = header_span.get_source_text(cx)
                         && let Some(ret_pos) = position_before_rarrow(&header_snip)
                         && let Some((_, ret_snip)) = suggested_ret(cx, output)

clippy_lints/src/min_ident_chars.rs

@@ -5,8 +5,8 @@ use rustc_data_structures::fx::FxHashSet;
 use rustc_hir::def::{DefKind, Res};
 use rustc_hir::intravisit::{Visitor, walk_item, walk_trait_item};
 use rustc_hir::{
-    GenericParamKind, HirId, Impl, ImplItem, ImplItemKind, Item, ItemKind, ItemLocalId, Node, Pat, PatKind, TraitItem,
-    UsePath,
+    GenericParamKind, HirId, Impl, ImplItem, ImplItemImplKind, ImplItemKind, Item, ItemKind, ItemLocalId, Node, Pat,
+    PatKind, TraitItem, UsePath,
 };
 use rustc_lint::{LateContext, LateLintPass, LintContext};
 use rustc_session::impl_lint_pass;
@@ -256,7 +256,11 @@ fn is_not_in_trait_impl(cx: &LateContext<'_>, pat: &Pat<'_>, ident: Ident) -> bo
 }
 
 fn get_param_name(impl_item: &ImplItem<'_>, cx: &LateContext<'_>, ident: Ident) -> Option<Symbol> {
-    if let Some(trait_item_def_id) = impl_item.trait_item_def_id {
+    if let ImplItemImplKind::Trait {
+        trait_item_def_id: Ok(trait_item_def_id),
+        ..
+    } = impl_item.impl_kind
+    {
         let trait_param_names = cx.tcx.fn_arg_idents(trait_item_def_id);
 
         let ImplItemKind::Fn(_, body_id) = impl_item.kind else {

clippy_lints/src/missing_asserts_for_indexing.rs

@@ -11,7 +11,7 @@ use rustc_ast::{BinOpKind, LitKind, RangeLimits};
 use rustc_data_structures::packed::Pu128;
 use rustc_data_structures::unhash::UnindexMap;
 use rustc_errors::{Applicability, Diag};
-use rustc_hir::{Body, Expr, ExprKind};
+use rustc_hir::{Block, Body, Expr, ExprKind, UnOp};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_session::declare_lint_pass;
 use rustc_span::source_map::Spanned;
@@ -135,12 +135,12 @@ fn assert_len_expr<'hir>(
     cx: &LateContext<'_>,
     expr: &'hir Expr<'hir>,
 ) -> Option<(LengthComparison, usize, &'hir Expr<'hir>)> {
-    let (cmp, asserted_len, slice_len) = if let Some(
-        higher::IfLetOrMatch::Match(cond, [_, then], _)
-    ) = higher::IfLetOrMatch::parse(cx, expr)
-        && let ExprKind::Binary(bin_op, left, right) = &cond.kind
+    let (cmp, asserted_len, slice_len) = if let Some(higher::If { cond, then, .. }) = higher::If::hir(expr)
+        && let ExprKind::Unary(UnOp::Not, condition) = &cond.kind
+        && let ExprKind::Binary(bin_op, left, right) = &condition.kind
         // check if `then` block has a never type expression
-        && cx.typeck_results().expr_ty(then.body).is_never()
+        && let ExprKind::Block(Block { expr: Some(then_expr), .. }, _) = then.kind
+        && cx.typeck_results().expr_ty(then_expr).is_never()
     {
         len_comparison(bin_op.node, left, right)?
     } else if let Some((macro_call, bin_op)) = first_node_macro_backtrace(cx, expr).find_map(|macro_call| {

clippy_lints/src/missing_const_for_fn.rs

@@ -158,13 +158,23 @@ impl<'tcx> LateLintPass<'tcx> for MissingConstForFn {
         let mir = cx.tcx.optimized_mir(def_id);
 
         if let Ok(()) = is_min_const_fn(cx, mir, self.msrv)
-            && let hir::Node::Item(hir::Item { vis_span, .. }) | hir::Node::ImplItem(hir::ImplItem { vis_span, .. }) =
-                cx.tcx.hir_node_by_def_id(def_id)
+            && let node = cx.tcx.hir_node_by_def_id(def_id)
+            && let Some((item_span, vis_span_opt)) = match node {
+                hir::Node::Item(item) => Some((item.span, Some(item.vis_span))),
+                hir::Node::ImplItem(impl_item) => Some((impl_item.span, impl_item.vis_span())),
+                _ => None,
+            }
         {
-            let suggestion = if vis_span.is_empty() { "const " } else { " const" };
+            let (sugg_span, suggestion) = if let Some(vis_span) = vis_span_opt
+                && !vis_span.is_empty()
+            {
+                (vis_span.shrink_to_hi(), " const")
+            } else {
+                (item_span.shrink_to_lo(), "const ")
+            };
             span_lint_and_then(cx, MISSING_CONST_FOR_FN, span, "this could be a `const fn`", |diag| {
                 diag.span_suggestion_verbose(
-                    vis_span.shrink_to_hi(),
+                    sugg_span,
                     "make the function `const`",
                     suggestion,
                     Applicability::MachineApplicable,

clippy_lints/src/missing_doc.rs

@@ -16,7 +16,7 @@ use rustc_hir::Attribute;
 use rustc_hir::def::DefKind;
 use rustc_hir::def_id::LocalDefId;
 use rustc_lint::{LateContext, LateLintPass, LintContext};
-use rustc_middle::ty::Visibility;
+use rustc_middle::ty::{AssocContainer, Visibility};
 use rustc_session::impl_lint_pass;
 use rustc_span::def_id::CRATE_DEF_ID;
 use rustc_span::symbol::kw;
@@ -246,12 +246,11 @@ impl<'tcx> LateLintPass<'tcx> for MissingDoc {
 
     fn check_impl_item(&mut self, cx: &LateContext<'tcx>, impl_item: &'tcx hir::ImplItem<'_>) {
         // If the method is an impl for a trait, don't doc.
-        if let Some(cid) = cx.tcx.associated_item(impl_item.owner_id).impl_container(cx.tcx) {
-            if cx.tcx.impl_trait_ref(cid).is_some() {
+        match cx.tcx.associated_item(impl_item.owner_id).container {
+            AssocContainer::Trait | AssocContainer::TraitImpl(_) => {
                 note_prev_span_then_ret!(self.prev_span, impl_item.span);
-            }
-        } else {
-            note_prev_span_then_ret!(self.prev_span, impl_item.span);
+            },
+            AssocContainer::InherentImpl => {},
         }
 
         let (article, desc) = cx.tcx.article_and_description(impl_item.owner_id.to_def_id());

clippy_lints/src/missing_inline.rs

@@ -3,7 +3,7 @@ use rustc_hir::attrs::AttributeKind;
 use rustc_hir::def_id::DefId;
 use rustc_hir::{self as hir, Attribute, find_attr};
 use rustc_lint::{LateContext, LateLintPass, LintContext};
-use rustc_middle::ty::AssocItemContainer;
+use rustc_middle::ty::AssocContainer;
 use rustc_session::declare_lint_pass;
 use rustc_span::Span;
 
@@ -166,8 +166,9 @@ impl<'tcx> LateLintPass<'tcx> for MissingInline {
         let assoc_item = cx.tcx.associated_item(impl_item.owner_id);
         let container_id = assoc_item.container_id(cx.tcx);
         let trait_def_id = match assoc_item.container {
-            AssocItemContainer::Trait => Some(container_id),
-            AssocItemContainer::Impl => cx.tcx.impl_trait_ref(container_id).map(|t| t.skip_binder().def_id),
+            AssocContainer::Trait => Some(container_id),
+            AssocContainer::TraitImpl(_) => cx.tcx.impl_trait_ref(container_id).map(|t| t.skip_binder().def_id),
+            AssocContainer::InherentImpl => None,
         };
 
         if let Some(trait_def_id) = trait_def_id

clippy_lints/src/missing_trait_methods.rs

@@ -70,7 +70,7 @@ impl<'tcx> LateLintPass<'tcx> for MissingTraitMethods {
                 .tcx
                 .associated_items(item.owner_id)
                 .in_definition_order()
-                .filter_map(|assoc_item| assoc_item.trait_item_def_id)
+                .filter_map(|assoc_item| assoc_item.expect_trait_impl().ok())
                 .collect();
 
             for assoc in cx

clippy_lints/src/only_used_in_recursion.rs

@@ -248,11 +248,13 @@ impl<'tcx> LateLintPass<'tcx> for OnlyUsedInRecursion {
                         .tcx
                         .impl_trait_ref(item.owner_id)
                         .map(EarlyBinder::instantiate_identity)
-                    && let Some(trait_item_id) = cx.tcx.associated_item(owner_id).trait_item_def_id
+                    && let Some(trait_item_id) = cx.tcx.trait_item_of(owner_id)
                 {
                     (
                         trait_item_id,
-                        FnKind::ImplTraitFn(std::ptr::from_ref(cx.tcx.erase_regions(trait_ref.args)) as usize),
+                        FnKind::ImplTraitFn(
+                            std::ptr::from_ref(cx.tcx.erase_and_anonymize_regions(trait_ref.args)) as usize
+                        ),
                         usize::from(sig.decl.implicit_self.has_implicit_self()),
                     )
                 } else {

clippy_lints/src/transmute/transmute_ref_to_ref.rs

@@ -45,7 +45,9 @@ pub(super) fn check<'tcx>(
                 Applicability::MaybeIncorrect,
             );
             triggered = true;
-        } else if (cx.tcx.erase_regions(from_ty) != cx.tcx.erase_regions(to_ty)) && !const_context {
+        } else if (cx.tcx.erase_and_anonymize_regions(from_ty) != cx.tcx.erase_and_anonymize_regions(to_ty))
+            && !const_context
+        {
             span_lint_and_then(
                 cx,
                 TRANSMUTE_PTR_TO_PTR,

clippy_lints/src/transmute/transmute_undefined_repr.rs

@@ -12,8 +12,8 @@ pub(super) fn check<'tcx>(
     from_ty_orig: Ty<'tcx>,
     to_ty_orig: Ty<'tcx>,
 ) -> bool {
-    let mut from_ty = cx.tcx.erase_regions(from_ty_orig);
-    let mut to_ty = cx.tcx.erase_regions(to_ty_orig);
+    let mut from_ty = cx.tcx.erase_and_anonymize_regions(from_ty_orig);
+    let mut to_ty = cx.tcx.erase_and_anonymize_regions(to_ty_orig);
 
     while from_ty != to_ty {
         let reduced_tys = reduce_refs(cx, from_ty, to_ty);

clippy_lints/src/use_self.rs

@@ -146,8 +146,7 @@ impl<'tcx> LateLintPass<'tcx> for UseSelf {
             // trait, not in the impl of the trait.
             let trait_method = cx
                 .tcx
-                .associated_item(impl_item.owner_id)
-                .trait_item_def_id
+                .trait_item_of(impl_item.owner_id)
                 .expect("impl method matches a trait method");
             let trait_method_sig = cx.tcx.fn_sig(trait_method).instantiate_identity();
             let trait_method_sig = cx.tcx.instantiate_bound_regions_with_erased(trait_method_sig);

clippy_lints/src/useless_conversion.rs

@@ -98,7 +98,7 @@ fn into_iter_bound<'tcx>(
             if tr.def_id() == into_iter_did {
                 into_iter_span = Some(*span);
             } else {
-                let tr = cx.tcx.erase_regions(tr);
+                let tr = cx.tcx.erase_and_anonymize_regions(tr);
                 if tr.has_escaping_bound_vars() {
                     return None;
                 }

clippy_utils/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "clippy_utils"
-version = "0.1.91"
+version = "0.1.92"
 edition = "2024"
 description = "Helpful tools for writing lints, provided as they are used in Clippy"
 repository = "https://github.com/rust-lang/rust-clippy"

clippy_utils/README.md

@@ -8,7 +8,7 @@ This crate is only guaranteed to build with this `nightly` toolchain:
 
 <!-- begin autogenerated nightly -->
 ```
-nightly-2025-09-04
+nightly-2025-09-18
 ```
 <!-- end autogenerated nightly -->