diff --git a/clippy_lints/src/attrs/allow_attributes.rs b/clippy_lints/src/attrs/allow_attributes.rs
index 53d9725703c3..0235b130b6c0 100644
--- a/clippy_lints/src/attrs/allow_attributes.rs
+++ b/clippy_lints/src/attrs/allow_attributes.rs
@@ -1,6 +1,7 @@
 use super::ALLOW_ATTRIBUTES;
 use clippy_utils::diagnostics::span_lint_and_then;
 use clippy_utils::is_from_proc_macro;
+use rustc_ast::attr::AttributeExt;
 use rustc_ast::{AttrStyle, Attribute};
 use rustc_errors::Applicability;
 use rustc_lint::{EarlyContext, LintContext};
@@ -9,17 +10,12 @@ use rustc_lint::{EarlyContext, LintContext};
 pub fn check<'cx>(cx: &EarlyContext<'cx>, attr: &'cx Attribute) {
     if !attr.span.in_external_macro(cx.sess().source_map())
         && let AttrStyle::Outer = attr.style
-        && let Some(ident) = attr.ident()
+        && let Some(path_span) = attr.path_span()
         && !is_from_proc_macro(cx, attr)
     {
         #[expect(clippy::collapsible_span_lint_calls, reason = "rust-clippy#7797")]
-        span_lint_and_then(cx, ALLOW_ATTRIBUTES, ident.span, "#[allow] attribute found", |diag| {
-            diag.span_suggestion(
-                ident.span,
-                "replace it with",
-                "expect",
-                Applicability::MachineApplicable,
-            );
+        span_lint_and_then(cx, ALLOW_ATTRIBUTES, path_span, "#[allow] attribute found", |diag| {
+            diag.span_suggestion(path_span, "replace it with", "expect", Applicability::MachineApplicable);
         });
     }
 }
diff --git a/clippy_lints/src/attrs/mod.rs b/clippy_lints/src/attrs/mod.rs
index 91c2dc7f3dc6..42c321df61c1 100644
--- a/clippy_lints/src/attrs/mod.rs
+++ b/clippy_lints/src/attrs/mod.rs
@@ -16,7 +16,7 @@ mod utils;
 use clippy_config::Conf;
 use clippy_utils::diagnostics::span_lint_and_help;
 use clippy_utils::msrvs::{self, Msrv, MsrvStack};
-use rustc_ast::{self as ast, AttrArgs, AttrKind, Attribute, MetaItemInner, MetaItemKind};
+use rustc_ast::{self as ast, AttrArgs, AttrItemKind, AttrKind, Attribute, MetaItemInner, MetaItemKind};
 use rustc_hir::{ImplItem, Item, ItemKind, TraitItem};
 use rustc_lint::{EarlyContext, EarlyLintPass, LateContext, LateLintPass};
 use rustc_session::impl_lint_pass;
@@ -574,16 +574,16 @@ impl EarlyLintPass for PostExpansionEarlyAttributes {
 
     fn check_attribute(&mut self, cx: &EarlyContext<'_>, attr: &Attribute) {
         if let Some(items) = &attr.meta_item_list()
-            && let Some(ident) = attr.ident()
+            && let Some(name) = attr.name()
         {
-            if matches!(ident.name, sym::allow) && self.msrv.meets(msrvs::LINT_REASONS_STABILIZATION) {
+            if matches!(name, sym::allow) && self.msrv.meets(msrvs::LINT_REASONS_STABILIZATION) {
                 allow_attributes::check(cx, attr);
             }
-            if matches!(ident.name, sym::allow | sym::expect) && self.msrv.meets(msrvs::LINT_REASONS_STABILIZATION) {
-                allow_attributes_without_reason::check(cx, ident.name, items, attr);
+            if matches!(name, sym::allow | sym::expect) && self.msrv.meets(msrvs::LINT_REASONS_STABILIZATION) {
+                allow_attributes_without_reason::check(cx, name, items, attr);
             }
-            if is_lint_level(ident.name, attr.id) {
-                blanket_clippy_restriction_lints::check(cx, ident.name, items);
+            if is_lint_level(name, attr.id) {
+                blanket_clippy_restriction_lints::check(cx, name, items);
             }
             if items.is_empty() || !attr.has_name(sym::deprecated) {
                 return;
@@ -604,7 +604,9 @@ impl EarlyLintPass for PostExpansionEarlyAttributes {
 
         if attr.has_name(sym::ignore)
             && match &attr.kind {
-                AttrKind::Normal(normal_attr) => !matches!(normal_attr.item.args, AttrArgs::Eq { .. }),
+                AttrKind::Normal(normal_attr) => {
+                    !matches!(normal_attr.item.args, AttrItemKind::Unparsed(AttrArgs::Eq { .. }))
+                },
                 AttrKind::DocComment(..) => true,
             }
         {
diff --git a/clippy_lints/src/attrs/should_panic_without_expect.rs b/clippy_lints/src/attrs/should_panic_without_expect.rs
index fd27e30a67f3..1a9abd88a46a 100644
--- a/clippy_lints/src/attrs/should_panic_without_expect.rs
+++ b/clippy_lints/src/attrs/should_panic_without_expect.rs
@@ -2,19 +2,19 @@ use super::{Attribute, SHOULD_PANIC_WITHOUT_EXPECT};
 use clippy_utils::diagnostics::span_lint_and_sugg;
 use rustc_ast::token::{Token, TokenKind};
 use rustc_ast::tokenstream::TokenTree;
-use rustc_ast::{AttrArgs, AttrKind};
+use rustc_ast::{AttrArgs, AttrItemKind, AttrKind};
 use rustc_errors::Applicability;
 use rustc_lint::EarlyContext;
 use rustc_span::sym;
 
 pub(super) fn check(cx: &EarlyContext<'_>, attr: &Attribute) {
     if let AttrKind::Normal(normal_attr) = &attr.kind {
-        if let AttrArgs::Eq { .. } = &normal_attr.item.args {
+        if let AttrItemKind::Unparsed(AttrArgs::Eq { .. }) = &normal_attr.item.args {
             // `#[should_panic = ".."]` found, good
             return;
         }
 
-        if let AttrArgs::Delimited(args) = &normal_attr.item.args
+        if let AttrItemKind::Unparsed(AttrArgs::Delimited(args)) = &normal_attr.item.args
             && let mut tt_iter = args.tokens.iter()
             && let Some(TokenTree::Token(
                 Token {
diff --git a/clippy_lints/src/attrs/useless_attribute.rs b/clippy_lints/src/attrs/useless_attribute.rs
index 1cebc18edc90..aa9a6654bee3 100644
--- a/clippy_lints/src/attrs/useless_attribute.rs
+++ b/clippy_lints/src/attrs/useless_attribute.rs
@@ -15,7 +15,7 @@ pub(super) fn check(cx: &EarlyContext<'_>, item: &Item, attrs: &[Attribute]) {
             return;
         }
         if let Some(lint_list) = &attr.meta_item_list()
-            && attr.ident().is_some_and(|ident| is_lint_level(ident.name, attr.id))
+            && attr.name().is_some_and(|name| is_lint_level(name, attr.id))
         {
             for lint in lint_list {
                 match item.kind {
diff --git a/clippy_lints/src/cfg_not_test.rs b/clippy_lints/src/cfg_not_test.rs
index 7590fe96fd21..88d07be0d4d4 100644
--- a/clippy_lints/src/cfg_not_test.rs
+++ b/clippy_lints/src/cfg_not_test.rs
@@ -1,7 +1,9 @@
 use clippy_utils::diagnostics::span_lint_and_then;
-use rustc_ast::MetaItemInner;
+use rustc_ast::attr::data_structures::CfgEntry;
+use rustc_ast::{AttrItemKind, EarlyParsedAttribute};
 use rustc_lint::{EarlyContext, EarlyLintPass};
 use rustc_session::declare_lint_pass;
+use rustc_span::sym;
 
 declare_clippy_lint! {
     /// ### What it does
@@ -32,29 +34,32 @@ declare_lint_pass!(CfgNotTest => [CFG_NOT_TEST]);
 
 impl EarlyLintPass for CfgNotTest {
     fn check_attribute(&mut self, cx: &EarlyContext<'_>, attr: &rustc_ast::Attribute) {
-        if attr.has_name(rustc_span::sym::cfg_trace) && contains_not_test(attr.meta_item_list().as_deref(), false) {
-            span_lint_and_then(
-                cx,
-                CFG_NOT_TEST,
-                attr.span,
-                "code is excluded from test builds",
-                |diag| {
-                    diag.help("consider not excluding any code from test builds");
-                    diag.note_once("this could increase code coverage despite not actually being tested");
-                },
-            );
+        if attr.has_name(sym::cfg_trace) {
+            let AttrItemKind::Parsed(EarlyParsedAttribute::CfgTrace(cfg)) = &attr.get_normal_item().args else {
+                unreachable!()
+            };
+
+            if contains_not_test(cfg, false) {
+                span_lint_and_then(
+                    cx,
+                    CFG_NOT_TEST,
+                    attr.span,
+                    "code is excluded from test builds",
+                    |diag| {
+                        diag.help("consider not excluding any code from test builds");
+                        diag.note_once("this could increase code coverage despite not actually being tested");
+                    },
+                );
+            }
         }
     }
 }
 
-fn contains_not_test(list: Option<&[MetaItemInner]>, not: bool) -> bool {
-    list.is_some_and(|list| {
-        list.iter().any(|item| {
-            item.ident().is_some_and(|ident| match ident.name {
-                rustc_span::sym::not => contains_not_test(item.meta_item_list(), !not),
-                rustc_span::sym::test => not,
-                _ => contains_not_test(item.meta_item_list(), not),
-            })
-        })
-    })
+fn contains_not_test(cfg: &CfgEntry, not: bool) -> bool {
+    match cfg {
+        CfgEntry::All(subs, _) | CfgEntry::Any(subs, _) => subs.iter().any(|item| contains_not_test(item, not)),
+        CfgEntry::Not(sub, _) => contains_not_test(sub, !not),
+        CfgEntry::NameValue { name: sym::test, .. } => not,
+        _ => false,
+    }
 }
diff --git a/clippy_lints/src/doc/include_in_doc_without_cfg.rs b/clippy_lints/src/doc/include_in_doc_without_cfg.rs
index bca1cd03bb7e..6c800f47b68a 100644
--- a/clippy_lints/src/doc/include_in_doc_without_cfg.rs
+++ b/clippy_lints/src/doc/include_in_doc_without_cfg.rs
@@ -1,6 +1,6 @@
 use clippy_utils::diagnostics::span_lint_and_sugg;
 use clippy_utils::source::snippet_opt;
-use rustc_ast::{AttrArgs, AttrKind, AttrStyle, Attribute};
+use rustc_ast::{AttrArgs, AttrItemKind, AttrKind, AttrStyle, Attribute};
 use rustc_errors::Applicability;
 use rustc_lint::EarlyContext;
 
@@ -11,7 +11,7 @@ pub fn check(cx: &EarlyContext<'_>, attrs: &[Attribute]) {
         if !attr.span.from_expansion()
             && let AttrKind::Normal(ref item) = attr.kind
             && attr.doc_str().is_some()
-            && let AttrArgs::Eq { expr: meta, .. } = &item.item.args
+            && let AttrItemKind::Unparsed(AttrArgs::Eq { expr: meta, .. }) = &item.item.args
             && !attr.span.contains(meta.span)
             // Since the `include_str` is already expanded at this point, we can only take the
             // whole attribute snippet and then modify for our suggestion.
diff --git a/clippy_lints/src/incompatible_msrv.rs b/clippy_lints/src/incompatible_msrv.rs
index c3bc9048c23a..8d538ff1acba 100644
--- a/clippy_lints/src/incompatible_msrv.rs
+++ b/clippy_lints/src/incompatible_msrv.rs
@@ -3,7 +3,8 @@ use clippy_utils::diagnostics::span_lint_and_then;
 use clippy_utils::msrvs::Msrv;
 use clippy_utils::{is_in_const_context, is_in_test, sym};
 use rustc_data_structures::fx::FxHashMap;
-use rustc_hir::{self as hir, AmbigArg, Expr, ExprKind, HirId, RustcVersion, StabilityLevel, StableSince};
+use rustc_hir::attrs::AttributeKind;
+use rustc_hir::{self as hir, AmbigArg, Expr, ExprKind, HirId, RustcVersion, StabilityLevel, StableSince, find_attr};
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::ty::{self, TyCtxt};
 use rustc_session::impl_lint_pass;
@@ -268,11 +269,9 @@ impl<'tcx> LateLintPass<'tcx> for IncompatibleMsrv {
 /// attribute.
 fn is_under_cfg_attribute(cx: &LateContext<'_>, hir_id: HirId) -> bool {
     cx.tcx.hir_parent_id_iter(hir_id).any(|id| {
-        cx.tcx.hir_attrs(id).iter().any(|attr| {
-            matches!(
-                attr.ident().map(|ident| ident.name),
-                Some(sym::cfg_trace | sym::cfg_attr_trace)
-            )
-        })
+        find_attr!(
+            cx.tcx.hir_attrs(id),
+            AttributeKind::CfgTrace(..) | AttributeKind::CfgAttrTrace
+        )
     })
 }
diff --git a/clippy_lints/src/large_include_file.rs b/clippy_lints/src/large_include_file.rs
index 48ce1afc6e69..54599499515e 100644
--- a/clippy_lints/src/large_include_file.rs
+++ b/clippy_lints/src/large_include_file.rs
@@ -2,7 +2,7 @@ use clippy_config::Conf;
 use clippy_utils::diagnostics::span_lint_and_then;
 use clippy_utils::macros::root_macro_call_first_node;
 use clippy_utils::source::snippet_opt;
-use rustc_ast::{AttrArgs, AttrKind, Attribute, LitKind};
+use rustc_ast::{AttrArgs, AttrItemKind, AttrKind, Attribute, LitKind};
 use rustc_hir::{Expr, ExprKind};
 use rustc_lint::{EarlyContext, EarlyLintPass, LateContext, LateLintPass};
 use rustc_session::impl_lint_pass;
@@ -92,7 +92,7 @@ impl EarlyLintPass for LargeIncludeFile {
             && let AttrKind::Normal(ref item) = attr.kind
             && let Some(doc) = attr.doc_str()
             && doc.as_str().len() as u64 > self.max_file_size
-            && let AttrArgs::Eq { expr: meta, .. } = &item.item.args
+            && let AttrItemKind::Unparsed(AttrArgs::Eq { expr: meta, .. }) = &item.item.args
             && !attr.span.contains(meta.span)
             // Since the `include_str` is already expanded at this point, we can only take the
             // whole attribute snippet and then modify for our suggestion.
diff --git a/clippy_lints/src/methods/is_empty.rs b/clippy_lints/src/methods/is_empty.rs
index add01b6a0837..8135c67d0d78 100644
--- a/clippy_lints/src/methods/is_empty.rs
+++ b/clippy_lints/src/methods/is_empty.rs
@@ -3,9 +3,9 @@ use clippy_utils::diagnostics::span_lint;
 use clippy_utils::macros::{is_assert_macro, root_macro_call};
 use clippy_utils::res::MaybeResPath;
 use clippy_utils::{find_binding_init, get_parent_expr, is_inside_always_const_context};
-use rustc_hir::{Expr, HirId};
+use rustc_hir::attrs::AttributeKind;
+use rustc_hir::{Expr, HirId, find_attr};
 use rustc_lint::{LateContext, LintContext};
-use rustc_span::sym;
 
 use super::CONST_IS_EMPTY;
 
@@ -40,7 +40,7 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &'_ Expr<'_>, receiver: &Expr<'_
 fn is_under_cfg(cx: &LateContext<'_>, id: HirId) -> bool {
     cx.tcx
         .hir_parent_id_iter(id)
-        .any(|id| cx.tcx.hir_attrs(id).iter().any(|attr| attr.has_name(sym::cfg_trace)))
+        .any(|id| find_attr!(cx.tcx.hir_attrs(id), AttributeKind::CfgTrace(..)))
 }
 
 /// Similar to [`clippy_utils::expr_or_init`], but does not go up the chain if the initialization
diff --git a/clippy_lints/src/missing_doc.rs b/clippy_lints/src/missing_doc.rs
index ac221743cfd6..375b275cd113 100644
--- a/clippy_lints/src/missing_doc.rs
+++ b/clippy_lints/src/missing_doc.rs
@@ -287,8 +287,8 @@ fn is_doc_attr(attr: &Attribute) -> bool {
     match attr {
         Attribute::Parsed(AttributeKind::DocComment { .. }) => true,
         Attribute::Unparsed(attr)
-            if let [ident] = &*attr.path.segments
-                && ident.name == sym::doc =>
+            if let [name] = &*attr.path.segments
+                && *name == sym::doc =>
         {
             matches!(attr.args, AttrArgs::Eq { .. })
         },
diff --git a/clippy_lints/src/new_without_default.rs b/clippy_lints/src/new_without_default.rs
index af78c093db6f..e151c06c6c20 100644
--- a/clippy_lints/src/new_without_default.rs
+++ b/clippy_lints/src/new_without_default.rs
@@ -4,7 +4,8 @@ use clippy_utils::source::{indent_of, reindent_multiline, snippet_with_applicabi
 use clippy_utils::sugg::DiagExt;
 use rustc_errors::Applicability;
 use rustc_hir as hir;
-use rustc_hir::HirIdSet;
+use rustc_hir::attrs::AttributeKind;
+use rustc_hir::{Attribute, HirIdSet};
 use rustc_lint::{LateContext, LateLintPass, LintContext};
 use rustc_middle::ty::AssocKind;
 use rustc_session::impl_lint_pass;
@@ -122,7 +123,7 @@ impl<'tcx> LateLintPass<'tcx> for NewWithoutDefault {
                 let attrs_sugg = {
                     let mut sugg = String::new();
                     for attr in cx.tcx.hir_attrs(assoc_item_hir_id) {
-                        if !attr.has_name(sym::cfg_trace) {
+                        let Attribute::Parsed(AttributeKind::CfgTrace(attrs)) = attr else {
                             // This might be some other attribute that the `impl Default` ought to inherit.
                             // But it could also be one of the many attributes that:
                             // - can't be put on an impl block -- like `#[inline]`
@@ -132,10 +133,12 @@ impl<'tcx> LateLintPass<'tcx> for NewWithoutDefault {
                             // reduce the applicability
                             app = Applicability::MaybeIncorrect;
                             continue;
-                        }
+                        };
 
-                        sugg.push_str(&snippet_with_applicability(cx.sess(), attr.span(), "_", &mut app));
-                        sugg.push('\n');
+                        for (_, attr_span) in attrs {
+                            sugg.push_str(&snippet_with_applicability(cx.sess(), *attr_span, "_", &mut app));
+                            sugg.push('\n');
+                        }
                     }
                     sugg
                 };
diff --git a/clippy_lints/src/utils/author.rs b/clippy_lints/src/utils/author.rs
index 685b0a9c0d60..f515f9987a80 100644
--- a/clippy_lints/src/utils/author.rs
+++ b/clippy_lints/src/utils/author.rs
@@ -320,6 +320,7 @@ impl<'a, 'tcx> PrintVisitor<'a, 'tcx> {
                 self.body(field!(anon_const.body));
             },
             ConstArgKind::Struct(..) => chain!(self, "let ConstArgKind::Struct(..) = {const_arg}.kind"),
+            ConstArgKind::TupleCall(..) => chain!(self, "let ConstArgKind::TupleCall(..) = {const_arg}.kind"),
             ConstArgKind::Infer(..) => chain!(self, "let ConstArgKind::Infer(..) = {const_arg}.kind"),
             ConstArgKind::Error(..) => chain!(self, "let ConstArgKind::Error(..) = {const_arg}.kind"),
         }
@@ -724,7 +725,6 @@ impl<'a, 'tcx> PrintVisitor<'a, 'tcx> {
                 kind!("Lit {{ ref {lit}, {negated} }}");
                 self.lit(lit);
             },
-            PatExprKind::ConstBlock(_) => kind!("ConstBlock(_)"),
             PatExprKind::Path(_) => self.maybe_path(pat),
         }
     }
diff --git a/clippy_lints_internal/src/lint_without_lint_pass.rs b/clippy_lints_internal/src/lint_without_lint_pass.rs
index fda65bc84eda..f56b6f31550b 100644
--- a/clippy_lints_internal/src/lint_without_lint_pass.rs
+++ b/clippy_lints_internal/src/lint_without_lint_pass.rs
@@ -250,8 +250,8 @@ pub(super) fn extract_clippy_version_value(cx: &LateContext<'_>, item: &'_ Item<
         if let hir::Attribute::Unparsed(attr_kind) = &attr
             // Identify attribute
             && let [tool_name, attr_name] = &attr_kind.path.segments[..]
-            && tool_name.name == sym::clippy
-            && attr_name.name == sym::version
+            && tool_name == &sym::clippy
+            && attr_name == &sym::version
             && let Some(version) = attr.value_str()
         {
             Some(version)
diff --git a/clippy_utils/README.md b/clippy_utils/README.md
index 69bb6a2d6669..ecd36b157571 100644
--- a/clippy_utils/README.md
+++ b/clippy_utils/README.md
@@ -8,7 +8,7 @@ This crate is only guaranteed to build with this `nightly` toolchain:
 
 <!-- begin autogenerated nightly -->
 ```
-nightly-2025-12-25
+nightly-2026-01-08
 ```
 <!-- end autogenerated nightly -->
 
diff --git a/clippy_utils/src/ast_utils/mod.rs b/clippy_utils/src/ast_utils/mod.rs
index 432d7a251a21..cf8716398efb 100644
--- a/clippy_utils/src/ast_utils/mod.rs
+++ b/clippy_utils/src/ast_utils/mod.rs
@@ -976,11 +976,21 @@ pub fn eq_attr(l: &Attribute, r: &Attribute) -> bool {
     l.style == r.style
         && match (&l.kind, &r.kind) {
             (DocComment(l1, l2), DocComment(r1, r2)) => l1 == r1 && l2 == r2,
-            (Normal(l), Normal(r)) => eq_path(&l.item.path, &r.item.path) && eq_attr_args(&l.item.args, &r.item.args),
+            (Normal(l), Normal(r)) => {
+                eq_path(&l.item.path, &r.item.path) && eq_attr_item_kind(&l.item.args, &r.item.args)
+            },
             _ => false,
         }
 }
 
+pub fn eq_attr_item_kind(l: &AttrItemKind, r: &AttrItemKind) -> bool {
+    match (l, r) {
+        (AttrItemKind::Unparsed(l), AttrItemKind::Unparsed(r)) => eq_attr_args(l, r),
+        (AttrItemKind::Parsed(_l), AttrItemKind::Parsed(_r)) => todo!(),
+        _ => false,
+    }
+}
+
 pub fn eq_attr_args(l: &AttrArgs, r: &AttrArgs) -> bool {
     use AttrArgs::*;
     match (l, r) {
diff --git a/clippy_utils/src/attrs.rs b/clippy_utils/src/attrs.rs
index 8820801853e0..32f6cb4fd5e9 100644
--- a/clippy_utils/src/attrs.rs
+++ b/clippy_utils/src/attrs.rs
@@ -20,10 +20,13 @@ pub fn get_builtin_attr<'a, A: AttributeExt + 'a>(
     name: Symbol,
 ) -> impl Iterator<Item = &'a A> {
     attrs.iter().filter(move |attr| {
-        if let Some([clippy, segment2]) = attr.ident_path().as_deref()
-            && clippy.name == sym::clippy
+        if let [clippy, segment2] = &*attr.path()
+            && *clippy == sym::clippy
         {
-            let new_name = match segment2.name {
+            let path_span = attr
+                .path_span()
+                .expect("Clippy attributes are unparsed and have a span");
+            let new_name = match *segment2 {
                 sym::cyclomatic_complexity => Some("cognitive_complexity"),
                 sym::author
                 | sym::version
@@ -35,7 +38,7 @@ pub fn get_builtin_attr<'a, A: AttributeExt + 'a>(
                 | sym::has_significant_drop
                 | sym::format_args => None,
                 _ => {
-                    sess.dcx().span_err(segment2.span, "usage of unknown attribute");
+                    sess.dcx().span_err(path_span, "usage of unknown attribute");
                     return false;
                 },
             };
@@ -43,17 +46,17 @@ pub fn get_builtin_attr<'a, A: AttributeExt + 'a>(
             match new_name {
                 Some(new_name) => {
                     sess.dcx()
-                        .struct_span_err(segment2.span, "usage of deprecated attribute")
+                        .struct_span_err(path_span, "usage of deprecated attribute")
                         .with_span_suggestion(
-                            segment2.span,
+                            path_span,
                             "consider using",
-                            new_name,
+                            format!("clippy::{new_name}"),
                             Applicability::MachineApplicable,
                         )
                         .emit();
                     false
                 },
-                None => segment2.name == name,
+                None => *segment2 == name,
             }
         } else {
             false
diff --git a/clippy_utils/src/check_proc_macro.rs b/clippy_utils/src/check_proc_macro.rs
index d9254fca9453..7fb8616072a5 100644
--- a/clippy_utils/src/check_proc_macro.rs
+++ b/clippy_utils/src/check_proc_macro.rs
@@ -348,9 +348,9 @@ fn fn_kind_pat(tcx: TyCtxt<'_>, kind: &FnKind<'_>, body: &Body<'_>, hir_id: HirI
 fn attr_search_pat(attr: &Attribute) -> (Pat, Pat) {
     match attr.kind {
         AttrKind::Normal(..) => {
-            if let Some(ident) = attr.ident() {
+            if let Some(name) = attr.name() {
                 // NOTE: This will likely have false positives, like `allow = 1`
-                let ident_string = ident.to_string();
+                let ident_string = name.to_string();
                 if attr.style == AttrStyle::Outer {
                     (
                         Pat::OwnedMultiStr(vec!["#[".to_owned() + &ident_string, ident_string]),
diff --git a/clippy_utils/src/consts.rs b/clippy_utils/src/consts.rs
index 9574e6fa40b0..334cc6bb5d55 100644
--- a/clippy_utils/src/consts.rs
+++ b/clippy_utils/src/consts.rs
@@ -578,7 +578,6 @@ impl<'tcx> ConstEvalCtxt<'tcx> {
                     Some(val)
                 }
             },
-            PatExprKind::ConstBlock(ConstBlock { body, .. }) => self.expr(self.tcx.hir_body(*body).value),
             PatExprKind::Path(qpath) => self.qpath(qpath, pat_expr.hir_id),
         }
     }
@@ -1141,9 +1140,11 @@ pub fn const_item_rhs_to_expr<'tcx>(tcx: TyCtxt<'tcx>, ct_rhs: ConstItemRhs<'tcx
         ConstItemRhs::Body(body_id) => Some(tcx.hir_body(body_id).value),
         ConstItemRhs::TypeConst(const_arg) => match const_arg.kind {
             ConstArgKind::Anon(anon) => Some(tcx.hir_body(anon.body).value),
-            ConstArgKind::Struct(..) | ConstArgKind::Path(_) | ConstArgKind::Error(..) | ConstArgKind::Infer(..) => {
-                None
-            },
+            ConstArgKind::Struct(..)
+            | ConstArgKind::TupleCall(..)
+            | ConstArgKind::Path(_)
+            | ConstArgKind::Error(..)
+            | ConstArgKind::Infer(..) => None,
         },
     }
 }
diff --git a/clippy_utils/src/hir_utils.rs b/clippy_utils/src/hir_utils.rs
index 055f6d03eff0..bdc1550d69b7 100644
--- a/clippy_utils/src/hir_utils.rs
+++ b/clippy_utils/src/hir_utils.rs
@@ -672,10 +672,18 @@ impl HirEqInterExpr<'_, '_, '_> {
                         .zip(*inits_b)
                         .all(|(init_a, init_b)| self.eq_const_arg(init_a.expr, init_b.expr))
             },
+            (ConstArgKind::TupleCall(path_a, args_a), ConstArgKind::TupleCall(path_b, args_b)) => {
+                self.eq_qpath(path_a, path_b)
+                    && args_a
+                        .iter()
+                        .zip(*args_b)
+                        .all(|(arg_a, arg_b)| self.eq_const_arg(arg_a, arg_b))
+            },
             // Use explicit match for now since ConstArg is undergoing flux.
             (
                 ConstArgKind::Path(..)
                 | ConstArgKind::Anon(..)
+                | ConstArgKind::TupleCall(..)
                 | ConstArgKind::Infer(..)
                 | ConstArgKind::Struct(..)
                 | ConstArgKind::Error(..),
@@ -705,9 +713,8 @@ impl HirEqInterExpr<'_, '_, '_> {
                     negated: right_neg,
                 },
             ) => left_neg == right_neg && left.node == right.node,
-            (PatExprKind::ConstBlock(left), PatExprKind::ConstBlock(right)) => self.eq_body(left.body, right.body),
             (PatExprKind::Path(left), PatExprKind::Path(right)) => self.eq_qpath(left, right),
-            (PatExprKind::Lit { .. } | PatExprKind::ConstBlock(..) | PatExprKind::Path(..), _) => false,
+            (PatExprKind::Lit { .. } | PatExprKind::Path(..), _) => false,
         }
     }
 
@@ -1312,7 +1319,6 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> {
                 lit.node.hash(&mut self.s);
                 negated.hash(&mut self.s);
             },
-            PatExprKind::ConstBlock(c) => self.hash_body(c.body),
             PatExprKind::Path(qpath) => self.hash_qpath(qpath),
         }
     }
@@ -1548,6 +1554,12 @@ impl<'a, 'tcx> SpanlessHash<'a, 'tcx> {
                     self.hash_const_arg(init.expr);
                 }
             },
+            ConstArgKind::TupleCall(path, args) => {
+                self.hash_qpath(path);
+                for arg in *args {
+                    self.hash_const_arg(arg);
+                }
+            },
             ConstArgKind::Infer(..) | ConstArgKind::Error(..) => {},
         }
     }
diff --git a/clippy_utils/src/lib.rs b/clippy_utils/src/lib.rs
index 2d079deb0ce4..2a620e917228 100644
--- a/clippy_utils/src/lib.rs
+++ b/clippy_utils/src/lib.rs
@@ -96,7 +96,7 @@ use rustc_data_structures::indexmap;
 use rustc_data_structures::packed::Pu128;
 use rustc_data_structures::unhash::UnindexMap;
 use rustc_hir::LangItem::{OptionNone, OptionSome, ResultErr, ResultOk};
-use rustc_hir::attrs::AttributeKind;
+use rustc_hir::attrs::{AttributeKind, CfgEntry};
 use rustc_hir::def::{DefKind, Res};
 use rustc_hir::def_id::{DefId, LocalDefId, LocalModDefId};
 use rustc_hir::definitions::{DefPath, DefPathData};
@@ -2412,17 +2412,15 @@ pub fn is_test_function(tcx: TyCtxt<'_>, fn_def_id: LocalDefId) -> bool {
 /// This only checks directly applied attributes, to see if a node is inside a `#[cfg(test)]` parent
 /// use [`is_in_cfg_test`]
 pub fn is_cfg_test(tcx: TyCtxt<'_>, id: HirId) -> bool {
-    tcx.hir_attrs(id).iter().any(|attr| {
-        if attr.has_name(sym::cfg_trace)
-            && let Some(items) = attr.meta_item_list()
-            && let [item] = &*items
-            && item.has_name(sym::test)
-        {
-            true
-        } else {
-            false
-        }
-    })
+    if let Some(cfgs) = find_attr!(tcx.hir_attrs(id), AttributeKind::CfgTrace(cfgs) => cfgs)
+        && cfgs
+            .iter()
+            .any(|(cfg, _)| matches!(cfg, CfgEntry::NameValue { name: sym::test, .. }))
+    {
+        true
+    } else {
+        false
+    }
 }
 
 /// Checks if any parent node of `HirId` has `#[cfg(test)]` attribute applied
@@ -2437,11 +2435,12 @@ pub fn is_in_test(tcx: TyCtxt<'_>, hir_id: HirId) -> bool {
 
 /// Checks if the item of any of its parents has `#[cfg(...)]` attribute applied.
 pub fn inherits_cfg(tcx: TyCtxt<'_>, def_id: LocalDefId) -> bool {
-    tcx.has_attr(def_id, sym::cfg_trace)
-        || tcx
-            .hir_parent_iter(tcx.local_def_id_to_hir_id(def_id))
-            .flat_map(|(parent_id, _)| tcx.hir_attrs(parent_id))
-            .any(|attr| attr.has_name(sym::cfg_trace))
+    find_attr!(tcx.get_all_attrs(def_id), AttributeKind::CfgTrace(..))
+        || find_attr!(
+            tcx.hir_parent_iter(tcx.local_def_id_to_hir_id(def_id))
+                .flat_map(|(parent_id, _)| tcx.hir_attrs(parent_id)),
+            AttributeKind::CfgTrace(..)
+        )
 }
 
 /// Walks up the HIR tree from the given expression in an attempt to find where the value is
diff --git a/clippy_utils/src/res.rs b/clippy_utils/src/res.rs
index a3efece7d224..e890a73620a5 100644
--- a/clippy_utils/src/res.rs
+++ b/clippy_utils/src/res.rs
@@ -301,7 +301,7 @@ impl<'tcx> MaybeQPath<'tcx> for &'tcx PatExpr<'_> {
     fn opt_qpath(self) -> Option<QPathId<'tcx>> {
         match &self.kind {
             PatExprKind::Path(qpath) => Some((qpath, self.hir_id)),
-            _ => None,
+            PatExprKind::Lit { .. } => None,
         }
     }
 }
@@ -419,7 +419,7 @@ impl<'a> MaybeResPath<'a> for &PatExpr<'a> {
     fn opt_res_path(self) -> OptResPath<'a> {
         match &self.kind {
             PatExprKind::Path(qpath) => qpath.opt_res_path(),
-            _ => (None, None),
+            PatExprKind::Lit { .. } => (None, None),
         }
     }
 }
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index dbec79e111fb..0755e1d29c69 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,6 +1,6 @@
 [toolchain]
 # begin autogenerated nightly
-channel = "nightly-2025-12-25"
+channel = "nightly-2026-01-08"
 # end autogenerated nightly
 components = ["cargo", "llvm-tools", "rust-src", "rust-std", "rustc", "rustc-dev", "rustfmt"]
 profile = "minimal"
diff --git a/tests/ui/renamed_builtin_attr.stderr b/tests/ui/renamed_builtin_attr.stderr
index fb51313dab69..0ebc43739d6b 100644
--- a/tests/ui/renamed_builtin_attr.stderr
+++ b/tests/ui/renamed_builtin_attr.stderr
@@ -1,8 +1,8 @@
 error: usage of deprecated attribute
-  --> tests/ui/renamed_builtin_attr.rs:3:11
+  --> tests/ui/renamed_builtin_attr.rs:3:3
    |
 LL | #[clippy::cyclomatic_complexity = "1"]
-   |           ^^^^^^^^^^^^^^^^^^^^^ help: consider using: `cognitive_complexity`
+   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `clippy::cognitive_complexity`
 
 error: aborting due to 1 previous error
 
diff --git a/tests/ui/trait_duplication_in_bounds_assoc_const_eq.fixed b/tests/ui/trait_duplication_in_bounds_assoc_const_eq.fixed
index f2bd306a99e4..f8be3331317c 100644
--- a/tests/ui/trait_duplication_in_bounds_assoc_const_eq.fixed
+++ b/tests/ui/trait_duplication_in_bounds_assoc_const_eq.fixed
@@ -1,6 +1,6 @@
 #![deny(clippy::trait_duplication_in_bounds)]
 #![expect(incomplete_features)]
-#![feature(associated_const_equality, min_generic_const_args)]
+#![feature(min_generic_const_args)]
 
 trait AssocConstTrait {
     #[type_const]
diff --git a/tests/ui/trait_duplication_in_bounds_assoc_const_eq.rs b/tests/ui/trait_duplication_in_bounds_assoc_const_eq.rs
index 8e7d843a44c0..a0d7a653993f 100644
--- a/tests/ui/trait_duplication_in_bounds_assoc_const_eq.rs
+++ b/tests/ui/trait_duplication_in_bounds_assoc_const_eq.rs
@@ -1,6 +1,6 @@
 #![deny(clippy::trait_duplication_in_bounds)]
 #![expect(incomplete_features)]
-#![feature(associated_const_equality, min_generic_const_args)]
+#![feature(min_generic_const_args)]
 
 trait AssocConstTrait {
     #[type_const]
diff --git a/tests/ui/unknown_attribute.stderr b/tests/ui/unknown_attribute.stderr
index b306abe0a9d1..1d4d50ffc02a 100644
--- a/tests/ui/unknown_attribute.stderr
+++ b/tests/ui/unknown_attribute.stderr
@@ -1,8 +1,8 @@
 error: usage of unknown attribute
-  --> tests/ui/unknown_attribute.rs:3:11
+  --> tests/ui/unknown_attribute.rs:3:3
    |
 LL | #[clippy::unknown]
-   |           ^^^^^^^
+   |   ^^^^^^^^^^^^^^^
 
 error: aborting due to 1 previous error