Merge commit '2b2190cb56' into clippyup

CHANGELOG.md

@@ -965,7 +965,7 @@ Released 2021-09-09
   [#7407](https://github.com/rust-lang/rust-clippy/pull/7407)
 * [`redundant_allocation`]: Now additionally supports the `Arc<>` type
   [#7308](https://github.com/rust-lang/rust-clippy/pull/7308)
-* [`blacklisted_name`]: Now allows blacklisted names in test code
+* [`disallowed_names`]: Now allows disallowed names in test code
   [#7379](https://github.com/rust-lang/rust-clippy/pull/7379)
 * [`redundant_closure`]: Suggests `&mut` for `FnMut`
   [#7437](https://github.com/rust-lang/rust-clippy/pull/7437)
@@ -2066,7 +2066,7 @@ Released 2020-08-27
   [#5692](https://github.com/rust-lang/rust-clippy/pull/5692)
 * [`if_same_then_else`]: Don't assume multiplication is always commutative
   [#5702](https://github.com/rust-lang/rust-clippy/pull/5702)
-* [`blacklisted_name`]: Remove `bar` from the default configuration
+* [`disallowed_names`]: Remove `bar` from the default configuration
   [#5712](https://github.com/rust-lang/rust-clippy/pull/5712)
 * [`redundant_pattern_matching`]: Avoid suggesting non-`const fn` calls in const contexts
   [#5724](https://github.com/rust-lang/rust-clippy/pull/5724)
@@ -3522,6 +3522,7 @@ Released 2018-09-13
 [`derive_partial_eq_without_eq`]: https://rust-lang.github.io/rust-clippy/master/index.html#derive_partial_eq_without_eq
 [`disallowed_method`]: https://rust-lang.github.io/rust-clippy/master/index.html#disallowed_method
 [`disallowed_methods`]: https://rust-lang.github.io/rust-clippy/master/index.html#disallowed_methods
+[`disallowed_names`]: https://rust-lang.github.io/rust-clippy/master/index.html#disallowed_names
 [`disallowed_script_idents`]: https://rust-lang.github.io/rust-clippy/master/index.html#disallowed_script_idents
 [`disallowed_type`]: https://rust-lang.github.io/rust-clippy/master/index.html#disallowed_type
 [`disallowed_types`]: https://rust-lang.github.io/rust-clippy/master/index.html#disallowed_types
@@ -3685,6 +3686,7 @@ Released 2018-09-13
 [`manual_find`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_find
 [`manual_find_map`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_find_map
 [`manual_flatten`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_flatten
+[`manual_instant_elapsed`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_instant_elapsed
 [`manual_map`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_map
 [`manual_memcpy`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_memcpy
 [`manual_non_exhaustive`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_non_exhaustive
@@ -3816,11 +3818,13 @@ Released 2018-09-13
 [`or_then_unwrap`]: https://rust-lang.github.io/rust-clippy/master/index.html#or_then_unwrap
 [`out_of_bounds_indexing`]: https://rust-lang.github.io/rust-clippy/master/index.html#out_of_bounds_indexing
 [`overflow_check_conditional`]: https://rust-lang.github.io/rust-clippy/master/index.html#overflow_check_conditional
+[`overly_complex_bool_expr`]: https://rust-lang.github.io/rust-clippy/master/index.html#overly_complex_bool_expr
 [`panic`]: https://rust-lang.github.io/rust-clippy/master/index.html#panic
 [`panic_in_result_fn`]: https://rust-lang.github.io/rust-clippy/master/index.html#panic_in_result_fn
 [`panic_params`]: https://rust-lang.github.io/rust-clippy/master/index.html#panic_params
 [`panicking_unwrap`]: https://rust-lang.github.io/rust-clippy/master/index.html#panicking_unwrap
 [`partialeq_ne_impl`]: https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_ne_impl
+[`partialeq_to_none`]: https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_to_none
 [`path_buf_push_overwrite`]: https://rust-lang.github.io/rust-clippy/master/index.html#path_buf_push_overwrite
 [`pattern_type_mismatch`]: https://rust-lang.github.io/rust-clippy/master/index.html#pattern_type_mismatch
 [`possible_missing_comma`]: https://rust-lang.github.io/rust-clippy/master/index.html#possible_missing_comma

CONTRIBUTING.md

@@ -30,10 +30,10 @@ All contributors are expected to follow the [Rust Code of Conduct].
 ## The Clippy book
 
 If you're new to Clippy and don't know where to start the [Clippy book] includes
-a developer guide and is a good place to start your journey.
+a [developer guide] and is a good place to start your journey.
 
-<!-- FIXME: Link to the deployed book, once it is deployed through CI -->
+[Clippy book]: https://doc.rust-lang.org/nightly/clippy/index.html
-[Clippy book]: book/src
+[developer guide]: https://doc.rust-lang.org/nightly/clippy/development/index.html
 
 ## High level approach
 

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "clippy"
-version = "0.1.64"
+version = "0.1.65"
 description = "A bunch of helpful lints to avoid common pitfalls in Rust"
 repository = "https://github.com/rust-lang/rust-clippy"
 readme = "README.md"

README.md

@@ -144,7 +144,7 @@ value` mapping e.g.
 
 ```toml
 avoid-breaking-exported-api = false
-blacklisted-names = ["toto", "tata", "titi"]
+disallowed-names = ["toto", "tata", "titi"]
 cognitive-complexity-threshold = 30
 ```
 

book/src/configuration.md

@@ -7,7 +7,7 @@ basic `variable = value` mapping eg.
 
 ```toml
 avoid-breaking-exported-api = false
-blacklisted-names = ["toto", "tata", "titi"]
+disallowed-names = ["toto", "tata", "titi"]
 cognitive-complexity-threshold = 30
 ```
 

clippy_dev/src/new_lint.rs

@@ -438,7 +438,7 @@ fn setup_mod_file(path: &Path, lint: &LintData<'_>) -> io::Result<&'static str>
     let mut lint_context = None;
 
     let mut iter = rustc_lexer::tokenize(&file_contents).map(|t| {
-        let range = offset..offset + t.len;
+        let range = offset..offset + t.len as usize;
         offset = range.end;
 
         LintDeclSearchResult {

clippy_dev/src/update_lints.rs

@@ -836,7 +836,7 @@ pub(crate) struct LintDeclSearchResult<'a> {
 fn parse_contents(contents: &str, module: &str, lints: &mut Vec<Lint>) {
     let mut offset = 0usize;
     let mut iter = tokenize(contents).map(|t| {
-        let range = offset..offset + t.len;
+        let range = offset..offset + t.len as usize;
         offset = range.end;
 
         LintDeclSearchResult {
@@ -899,7 +899,7 @@ fn parse_contents(contents: &str, module: &str, lints: &mut Vec<Lint>) {
 fn parse_deprecated_contents(contents: &str, lints: &mut Vec<DeprecatedLint>) {
     let mut offset = 0usize;
     let mut iter = tokenize(contents).map(|t| {
-        let range = offset..offset + t.len;
+        let range = offset..offset + t.len as usize;
         offset = range.end;
 
         LintDeclSearchResult {
@@ -946,7 +946,7 @@ fn parse_renamed_contents(contents: &str, lints: &mut Vec<RenamedLint>) {
     for line in contents.lines() {
         let mut offset = 0usize;
         let mut iter = tokenize(line).map(|t| {
-            let range = offset..offset + t.len;
+            let range = offset..offset + t.len as usize;
             offset = range.end;
 
             LintDeclSearchResult {

clippy_lints/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "clippy_lints"
-version = "0.1.64"
+version = "0.1.65"
 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/assertions_on_result_states.rs

@@ -53,13 +53,14 @@ impl<'tcx> LateLintPass<'tcx> for AssertionsOnResultStates {
                 if result_type_with_refs != result_type {
                     return;
                 } else if let Res::Local(binding_id) = path_res(cx, recv)
-                    && local_used_after_expr(cx, binding_id, recv) {
+                    && local_used_after_expr(cx, binding_id, recv)
+                {
                     return;
                 }
             }
             let mut app = Applicability::MachineApplicable;
             match method_segment.ident.as_str() {
-                "is_ok" if has_debug_impl(cx, substs.type_at(1)) => {
+                "is_ok" if type_suitable_to_unwrap(cx, substs.type_at(1)) => {
                     span_lint_and_sugg(
                         cx,
                         ASSERTIONS_ON_RESULT_STATES,
@@ -73,7 +74,7 @@ impl<'tcx> LateLintPass<'tcx> for AssertionsOnResultStates {
                         app,
                     );
                 }
-                "is_err" if has_debug_impl(cx, substs.type_at(0)) => {
+                "is_err" if type_suitable_to_unwrap(cx, substs.type_at(0)) => {
                     span_lint_and_sugg(
                         cx,
                         ASSERTIONS_ON_RESULT_STATES,
@@ -99,3 +100,7 @@ fn has_debug_impl<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool {
         .get_diagnostic_item(sym::Debug)
         .map_or(false, |debug| implements_trait(cx, ty, debug, &[]))
 }
+
+fn type_suitable_to_unwrap<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> bool {
+    has_debug_impl(cx, ty) && !ty.is_unit() && !ty.is_never()
+}

clippy_lints/src/booleans.rs

@@ -64,7 +64,7 @@ declare_clippy_lint! {
     /// if a {}
     /// ```
     #[clippy::version = "pre 1.29.0"]
-    pub LOGIC_BUG,
+    pub OVERLY_COMPLEX_BOOL_EXPR,
     correctness,
     "boolean expressions that contain terminals which can be eliminated"
 }
@@ -72,7 +72,7 @@ declare_clippy_lint! {
 // For each pairs, both orders are considered.
 const METHODS_WITH_NEGATION: [(&str, &str); 2] = [("is_some", "is_none"), ("is_err", "is_ok")];
 
-declare_lint_pass!(NonminimalBool => [NONMINIMAL_BOOL, LOGIC_BUG]);
+declare_lint_pass!(NonminimalBool => [NONMINIMAL_BOOL, OVERLY_COMPLEX_BOOL_EXPR]);
 
 impl<'tcx> LateLintPass<'tcx> for NonminimalBool {
     fn check_fn(
@@ -396,7 +396,7 @@ impl<'a, 'tcx> NonminimalBoolVisitor<'a, 'tcx> {
                     if stats.terminals[i] != 0 && simplified_stats.terminals[i] == 0 {
                         span_lint_hir_and_then(
                             self.cx,
-                            LOGIC_BUG,
+                            OVERLY_COMPLEX_BOOL_EXPR,
                             e.hir_id,
                             e.span,
                             "this boolean expression contains a logic bug",

clippy_lints/src/casts/cast_abs_to_unsigned.rs

@@ -37,7 +37,7 @@ pub(super) fn check(
             span,
             &format!("casting the result of `{cast_from}::abs()` to {cast_to}"),
             "replace with",
-            format!("{}.unsigned_abs()", Sugg::hir(cx, &args[0], "..")),
+            format!("{}.unsigned_abs()", Sugg::hir(cx, &args[0], "..").maybe_par()),
             Applicability::MachineApplicable,
         );
     }

clippy_lints/src/checked_conversions.rs

@@ -270,10 +270,7 @@ fn get_types_from_cast<'a>(
     let limit_from: Option<(&Expr<'_>, &str)> = call_from_cast.or_else(|| {
         if_chain! {
             // `from_type::from, to_type::max_value()`
-            if let ExprKind::Call(from_func, args) = &expr.kind;
+            if let ExprKind::Call(from_func, [limit]) = &expr.kind;
-            // `to_type::max_value()`
-            if args.len() == 1;
-            if let limit = &args[0];
             // `from_type::from`
             if let ExprKind::Path(ref path) = &from_func.kind;
             if let Some(from_sym) = get_implementing_type(path, INTS, "from");

clippy_lints/src/create_dir.rs

@@ -34,7 +34,7 @@ declare_lint_pass!(CreateDir => [CREATE_DIR]);
 impl LateLintPass<'_> for CreateDir {
     fn check_expr(&mut self, cx: &LateContext<'_>, expr: &Expr<'_>) {
         if_chain! {
-            if let ExprKind::Call(func, args) = expr.kind;
+            if let ExprKind::Call(func, [arg, ..]) = expr.kind;
             if let ExprKind::Path(ref path) = func.kind;
             if let Some(def_id) = cx.qpath_res(path, func.hir_id).opt_def_id();
             if match_def_path(cx, def_id, &paths::STD_FS_CREATE_DIR);
@@ -45,7 +45,7 @@ impl LateLintPass<'_> for CreateDir {
                     expr.span,
                     "calling `std::fs::create_dir` where there may be a better way",
                     "consider calling `std::fs::create_dir_all` instead",
-                    format!("create_dir_all({})", snippet(cx, args[0].span, "..")),
+                    format!("create_dir_all({})", snippet(cx, arg.span, "..")),
                     Applicability::MaybeIncorrect,
                 )
             }

clippy_lints/src/default.rs

@@ -1,7 +1,9 @@
 use clippy_utils::diagnostics::{span_lint_and_note, span_lint_and_sugg};
 use clippy_utils::source::snippet_with_macro_callsite;
 use clippy_utils::ty::{has_drop, is_copy};
-use clippy_utils::{any_parent_is_automatically_derived, contains_name, get_parent_expr, match_def_path, paths};
+use clippy_utils::{
+    any_parent_is_automatically_derived, contains_name, get_parent_expr, is_from_proc_macro, match_def_path, paths,
+};
 use if_chain::if_chain;
 use rustc_data_structures::fx::FxHashSet;
 use rustc_errors::Applicability;
@@ -94,6 +96,7 @@ impl<'tcx> LateLintPass<'tcx> for Default {
             if let QPath::Resolved(None, _path) = qpath;
             let expr_ty = cx.typeck_results().expr_ty(expr);
             if let ty::Adt(def, ..) = expr_ty.kind();
+            if !is_from_proc_macro(cx, expr);
             then {
                 // TODO: Work out a way to put "whatever the imported way of referencing
                 // this type in this file" rather than a fully-qualified type.

clippy_lints/src/dereference.rs

@@ -1,7 +1,7 @@
 use clippy_utils::diagnostics::{span_lint_and_sugg, span_lint_hir_and_then};
 use clippy_utils::source::{snippet_with_applicability, snippet_with_context};
 use clippy_utils::sugg::has_enclosing_paren;
-use clippy_utils::ty::{expr_sig, peel_mid_ty_refs, variant_of_res};
+use clippy_utils::ty::{expr_sig, peel_mid_ty_refs, ty_sig, variant_of_res};
 use clippy_utils::{get_parent_expr, is_lint_allowed, path_to_local, walk_to_expr_usage};
 use rustc_ast::util::parser::{PREC_POSTFIX, PREC_PREFIX};
 use rustc_data_structures::fx::FxIndexMap;
@@ -15,9 +15,9 @@ use rustc_hir::{
 use rustc_infer::infer::TyCtxtInferExt;
 use rustc_lint::{LateContext, LateLintPass};
 use rustc_middle::ty::adjustment::{Adjust, Adjustment, AutoBorrow, AutoBorrowMutability};
-use rustc_middle::ty::{self, Ty, TyCtxt, TypeVisitable, TypeckResults};
+use rustc_middle::ty::{self, Binder, BoundVariableKind, List, Ty, TyCtxt, TypeVisitable, TypeckResults};
 use rustc_session::{declare_tool_lint, impl_lint_pass};
-use rustc_span::{symbol::sym, Span, Symbol};
+use rustc_span::{symbol::sym, Span, Symbol, DUMMY_SP};
 use rustc_trait_selection::infer::InferCtxtExt;
 
 declare_clippy_lint! {
@@ -183,24 +183,24 @@ enum State {
     },
     DerefedBorrow(DerefedBorrow),
     ExplicitDeref {
-        // Span and id of the top-level deref expression if the parent expression is a borrow.
+        mutability: Option<Mutability>,
-        deref_span_id: Option<(Span, HirId)>,
     },
     ExplicitDerefField {
         name: Symbol,
     },
     Reborrow {
-        deref_span: Span,
+        mutability: Mutability,
-        deref_hir_id: HirId,
+    },
+    Borrow {
+        mutability: Mutability,
     },
-    Borrow,
 }
 
 // A reference operation considered by this lint pass
 enum RefOp {
     Method(Mutability),
     Deref,
-    AddrOf,
+    AddrOf(Mutability),
 }
 
 struct RefPat {
@@ -263,7 +263,7 @@ impl<'tcx> LateLintPass<'tcx> for Dereferencing {
                             ));
                         } else if position.is_deref_stable() {
                             self.state = Some((
-                                State::ExplicitDeref { deref_span_id: None },
+                                State::ExplicitDeref { mutability: None },
                                 StateData { span: expr.span, hir_id: expr.hir_id, position },
                             ));
                         }
@@ -289,7 +289,7 @@ impl<'tcx> LateLintPass<'tcx> for Dereferencing {
                             },
                         ));
                     },
-                    RefOp::AddrOf => {
+                    RefOp::AddrOf(mutability) => {
                         // Find the number of times the borrow is auto-derefed.
                         let mut iter = adjustments.iter();
                         let mut deref_count = 0usize;
@@ -357,9 +357,13 @@ impl<'tcx> LateLintPass<'tcx> for Dereferencing {
                                 }),
                                 StateData { span: expr.span, hir_id: expr.hir_id, position },
                             ));
-                        } else if position.is_deref_stable() {
+                        } else if position.is_deref_stable()
+                            // Auto-deref doesn't combine with other adjustments
+                            && next_adjust.map_or(true, |a| matches!(a.kind, Adjust::Deref(_) | Adjust::Borrow(_)))
+                            && iter.all(|a| matches!(a.kind, Adjust::Deref(_) | Adjust::Borrow(_)))
+                        {
                             self.state = Some((
-                                State::Borrow,
+                                State::Borrow { mutability },
                                 StateData {
                                     span: expr.span,
                                     hir_id: expr.hir_id,
@@ -395,7 +399,7 @@ impl<'tcx> LateLintPass<'tcx> for Dereferencing {
                     data,
                 ));
             },
-            (Some((State::DerefedBorrow(state), data)), RefOp::AddrOf) if state.count != 0 => {
+            (Some((State::DerefedBorrow(state), data)), RefOp::AddrOf(_)) if state.count != 0 => {
                 self.state = Some((
                     State::DerefedBorrow(DerefedBorrow {
                         count: state.count - 1,
@@ -404,12 +408,12 @@ impl<'tcx> LateLintPass<'tcx> for Dereferencing {
                     data,
                 ));
             },
-            (Some((State::DerefedBorrow(state), data)), RefOp::AddrOf) => {
+            (Some((State::DerefedBorrow(state), data)), RefOp::AddrOf(mutability)) => {
                 let position = data.position;
                 report(cx, expr, State::DerefedBorrow(state), data);
                 if position.is_deref_stable() {
                     self.state = Some((
-                        State::Borrow,
+                        State::Borrow { mutability },
                         StateData {
                             span: expr.span,
                             hir_id: expr.hir_id,
@@ -430,43 +434,28 @@ impl<'tcx> LateLintPass<'tcx> for Dereferencing {
                     ));
                 } else if position.is_deref_stable() {
                     self.state = Some((
-                        State::ExplicitDeref { deref_span_id: None },
+                        State::ExplicitDeref { mutability: None },
                         StateData { span: expr.span, hir_id: expr.hir_id, position },
                     ));
                 }
             },
 
-            (Some((State::Borrow, data)), RefOp::Deref) => {
+            (Some((State::Borrow { mutability }, data)), RefOp::Deref) => {
                 if typeck.expr_ty(sub_expr).is_ref() {
-                    self.state = Some((
+                    self.state = Some((State::Reborrow { mutability }, data));
-                        State::Reborrow {
-                            deref_span: expr.span,
-                            deref_hir_id: expr.hir_id,
-                        },
-                        data,
-                    ));
                 } else {
                     self.state = Some((
                         State::ExplicitDeref {
-                            deref_span_id: Some((expr.span, expr.hir_id)),
+                            mutability: Some(mutability),
                         },
                         data,
                     ));
                 }
             },
-            (
+            (Some((State::Reborrow { mutability }, data)), RefOp::Deref) => {
-                Some((
-                    State::Reborrow {
-                        deref_span,
-                        deref_hir_id,
-                    },
-                    data,
-                )),
-                RefOp::Deref,
-            ) => {
                 self.state = Some((
                     State::ExplicitDeref {
-                        deref_span_id: Some((deref_span, deref_hir_id)),
+                        mutability: Some(mutability),
                     },
                     data,
                 ));
@@ -573,7 +562,7 @@ fn try_parse_ref_op<'tcx>(
         ExprKind::Unary(UnOp::Deref, sub_expr) if !typeck.expr_ty(sub_expr).is_unsafe_ptr() => {
             return Some((RefOp::Deref, sub_expr));
         },
-        ExprKind::AddrOf(BorrowKind::Ref, _, sub_expr) => return Some((RefOp::AddrOf, sub_expr)),
+        ExprKind::AddrOf(BorrowKind::Ref, mutability, sub_expr) => return Some((RefOp::AddrOf(mutability), sub_expr)),
         _ => return None,
     };
     if tcx.is_diagnostic_item(sym::deref_method, def_id) {
@@ -609,18 +598,21 @@ enum Position {
     Postfix,
     Deref,
     /// Any other location which will trigger auto-deref to a specific time.
-    DerefStable(i8),
+    /// Contains the precedence of the parent expression and whether the target type is sized.
+    DerefStable(i8, bool),
     /// Any other location which will trigger auto-reborrowing.
+    /// Contains the precedence of the parent expression.
     ReborrowStable(i8),
+    /// Contains the precedence of the parent expression.
     Other(i8),
 }
 impl Position {
     fn is_deref_stable(self) -> bool {
-        matches!(self, Self::DerefStable(_))
+        matches!(self, Self::DerefStable(..))
     }
 
     fn is_reborrow_stable(self) -> bool {
-        matches!(self, Self::DerefStable(_) | Self::ReborrowStable(_))
+        matches!(self, Self::DerefStable(..) | Self::ReborrowStable(_))
     }
 
     fn can_auto_borrow(self) -> bool {
@@ -628,7 +620,7 @@ impl Position {
     }
 
     fn lint_explicit_deref(self) -> bool {
-        matches!(self, Self::Other(_) | Self::DerefStable(_) | Self::ReborrowStable(_))
+        matches!(self, Self::Other(_) | Self::DerefStable(..) | Self::ReborrowStable(_))
     }
 
     fn precedence(self) -> i8 {
@@ -639,7 +631,7 @@ impl Position {
             | Self::FieldAccess(_)
             | Self::Postfix => PREC_POSTFIX,
             Self::Deref => PREC_PREFIX,
-            Self::DerefStable(p) | Self::ReborrowStable(p) | Self::Other(p) => p,
+            Self::DerefStable(p, _) | Self::ReborrowStable(p) | Self::Other(p) => p,
         }
     }
 }
@@ -659,7 +651,7 @@ fn walk_parents<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> (Position, &
         }
         match parent {
             Node::Local(Local { ty: Some(ty), span, .. }) if span.ctxt() == ctxt => {
-                Some(binding_ty_auto_deref_stability(ty, precedence))
+                Some(binding_ty_auto_deref_stability(cx, ty, precedence, List::empty()))
             },
             Node::Item(&Item {
                 kind: ItemKind::Static(..) | ItemKind::Const(..),
@@ -680,11 +672,7 @@ fn walk_parents<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> (Position, &
                 ..
             }) if span.ctxt() == ctxt => {
                 let ty = cx.tcx.type_of(def_id);
-                Some(if ty.is_ref() {
+                Some(ty_auto_deref_stability(cx, ty, precedence).position_for_result(cx))
-                    Position::DerefStable(precedence)
-                } else {
-                    Position::Other(precedence)
-                })
             },
 
             Node::Item(&Item {
@@ -705,45 +693,38 @@ fn walk_parents<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> (Position, &
                 span,
                 ..
             }) if span.ctxt() == ctxt => {
-                let output = cx.tcx.fn_sig(def_id.to_def_id()).skip_binder().output();
+                let output = cx
-                Some(if !output.is_ref() {
+                    .tcx
-                    Position::Other(precedence)
+                    .erase_late_bound_regions(cx.tcx.fn_sig(def_id.to_def_id()).output());
-                } else if output.has_placeholders() || output.has_opaque_types() {
+                Some(ty_auto_deref_stability(cx, output, precedence).position_for_result(cx))
-                    Position::ReborrowStable(precedence)
-                } else {
-                    Position::DerefStable(precedence)
-                })
             },
 
             Node::Expr(parent) if parent.span.ctxt() == ctxt => match parent.kind {
                 ExprKind::Ret(_) => {
                     let owner_id = cx.tcx.hir().body_owner(cx.enclosing_body.unwrap());
                     Some(
-                        if let Node::Expr(Expr {
+                        if let Node::Expr(
-                            kind: ExprKind::Closure(&Closure { fn_decl, .. }),
+                            closure_expr @ Expr {
-                            ..
+                                kind: ExprKind::Closure(closure),
-                        }) = cx.tcx.hir().get(owner_id)
+                                ..
+                            },
+                        ) = cx.tcx.hir().get(owner_id)
                         {
-                            match fn_decl.output {
+                            closure_result_position(cx, closure, cx.typeck_results().expr_ty(closure_expr), precedence)
-                                FnRetTy::Return(ty) => binding_ty_auto_deref_stability(ty, precedence),
-                                FnRetTy::DefaultReturn(_) => Position::Other(precedence),
-                            }
                         } else {
                             let output = cx
                                 .tcx
-                                .fn_sig(cx.tcx.hir().local_def_id(owner_id))
+                                .erase_late_bound_regions(cx.tcx.fn_sig(cx.tcx.hir().local_def_id(owner_id)).output());
-                                .skip_binder()
+                            ty_auto_deref_stability(cx, output, precedence).position_for_result(cx)
-                                .output();
-                            if !output.is_ref() {
-                                Position::Other(precedence)
-                            } else if output.has_placeholders() || output.has_opaque_types() {
-                                Position::ReborrowStable(precedence)
-                            } else {
-                                Position::DerefStable(precedence)
-                            }
                         },
                     )
                 },
+                ExprKind::Closure(closure) => Some(closure_result_position(
+                    cx,
+                    closure,
+                    cx.typeck_results().expr_ty(parent),
+                    precedence,
+                )),
                 ExprKind::Call(func, _) if func.hir_id == child_id => {
                     (child_id == e.hir_id).then_some(Position::Callee)
                 },
@@ -755,8 +736,9 @@ fn walk_parents<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> (Position, &
                     .map(|(hir_ty, ty)| match hir_ty {
                         // Type inference for closures can depend on how they're called. Only go by the explicit
                         // types here.
-                        Some(ty) => binding_ty_auto_deref_stability(ty, precedence),
+                        Some(hir_ty) => binding_ty_auto_deref_stability(cx, hir_ty, precedence, ty.bound_vars()),
-                        None => param_auto_deref_stability(ty.skip_binder(), precedence),
+                        None => ty_auto_deref_stability(cx, cx.tcx.erase_late_bound_regions(ty), precedence)
+                            .position_for_arg(),
                     }),
                 ExprKind::MethodCall(_, args, _) => {
                     let id = cx.typeck_results().type_dependent_def_id(parent.hir_id).unwrap();
@@ -797,7 +779,12 @@ fn walk_parents<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> (Position, &
                                 Position::MethodReceiver
                             }
                         } else {
-                            param_auto_deref_stability(cx.tcx.fn_sig(id).skip_binder().inputs()[i], precedence)
+                            ty_auto_deref_stability(
+                                cx,
+                                cx.tcx.erase_late_bound_regions(cx.tcx.fn_sig(id).input(i)),
+                                precedence,
+                            )
+                            .position_for_arg()
                         }
                     })
                 },
@@ -808,7 +795,9 @@ fn walk_parents<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> (Position, &
                         .find(|f| f.expr.hir_id == child_id)
                         .zip(variant)
                         .and_then(|(field, variant)| variant.fields.iter().find(|f| f.name == field.ident.name))
-                        .map(|field| param_auto_deref_stability(cx.tcx.type_of(field.did), precedence))
+                        .map(|field| {
+                            ty_auto_deref_stability(cx, cx.tcx.type_of(field.did), precedence).position_for_arg()
+                        })
                 },
                 ExprKind::Field(child, name) if child.hir_id == e.hir_id => Some(Position::FieldAccess(name.name)),
                 ExprKind::Unary(UnOp::Deref, child) if child.hir_id == e.hir_id => Some(Position::Deref),
@@ -831,6 +820,26 @@ fn walk_parents<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> (Position, &
     (position, adjustments)
 }
 
+fn closure_result_position<'tcx>(
+    cx: &LateContext<'tcx>,
+    closure: &'tcx Closure<'_>,
+    ty: Ty<'tcx>,
+    precedence: i8,
+) -> Position {
+    match closure.fn_decl.output {
+        FnRetTy::Return(hir_ty) => {
+            if let Some(sig) = ty_sig(cx, ty)
+                && let Some(output) = sig.output()
+            {
+                binding_ty_auto_deref_stability(cx, hir_ty, precedence, output.bound_vars())
+            } else {
+                Position::Other(precedence)
+            }
+        },
+        FnRetTy::DefaultReturn(_) => Position::Other(precedence),
+    }
+}
+
 // Checks the stability of auto-deref when assigned to a binding with the given explicit type.
 //
 // e.g.
@@ -840,7 +849,12 @@ fn walk_parents<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) -> (Position, &
 //
 // Here `y1` and `y2` would resolve to different types, so the type `&Box<_>` is not stable when
 // switching to auto-dereferencing.
-fn binding_ty_auto_deref_stability(ty: &hir::Ty<'_>, precedence: i8) -> Position {
+fn binding_ty_auto_deref_stability<'tcx>(
+    cx: &LateContext<'tcx>,
+    ty: &'tcx hir::Ty<'_>,
+    precedence: i8,
+    binder_args: &'tcx List<BoundVariableKind>,
+) -> Position {
     let TyKind::Rptr(_, ty) = &ty.kind else {
         return Position::Other(precedence);
     };
@@ -870,21 +884,33 @@ fn binding_ty_auto_deref_stability(ty: &hir::Ty<'_>, precedence: i8) -> Position
                 {
                     Position::ReborrowStable(precedence)
                 } else {
-                    Position::DerefStable(precedence)
+                    Position::DerefStable(
+                        precedence,
+                        cx.tcx
+                            .erase_late_bound_regions(Binder::bind_with_vars(
+                                cx.typeck_results().node_type(ty.ty.hir_id),
+                                binder_args,
+                            ))
+                            .is_sized(cx.tcx.at(DUMMY_SP), cx.param_env.without_caller_bounds()),
+                    )
                 }
             },
-            TyKind::Slice(_)
+            TyKind::Slice(_) => Position::DerefStable(precedence, false),
-            | TyKind::Array(..)
+            TyKind::Array(..) | TyKind::Ptr(_) | TyKind::BareFn(_) => Position::DerefStable(precedence, true),
-            | TyKind::BareFn(_)
+            TyKind::Never
-            | TyKind::Never
             | TyKind::Tup(_)
-            | TyKind::Ptr(_)
+            | TyKind::Path(_) => Position::DerefStable(
-            | TyKind::TraitObject(..)
+                precedence,
-            | TyKind::Path(_) => Position::DerefStable(precedence),
+                cx.tcx
-            TyKind::OpaqueDef(..)
+                    .erase_late_bound_regions(Binder::bind_with_vars(
-            | TyKind::Infer
+                        cx.typeck_results().node_type(ty.ty.hir_id),
-            | TyKind::Typeof(..)
+                        binder_args,
-            | TyKind::Err => Position::ReborrowStable(precedence),
+                    ))
+                    .is_sized(cx.tcx.at(DUMMY_SP), cx.param_env.without_caller_bounds()),
+            ),
+            TyKind::OpaqueDef(..) | TyKind::Infer | TyKind::Typeof(..) | TyKind::TraitObject(..) | TyKind::Err => {
+                Position::ReborrowStable(precedence)
+            },
         };
     }
 }
@@ -920,10 +946,39 @@ fn ty_contains_infer(ty: &hir::Ty<'_>) -> bool {
     v.0
 }
 
+struct TyPosition<'tcx> {
+    position: Position,
+    ty: Option<Ty<'tcx>>,
+}
+impl From<Position> for TyPosition<'_> {
+    fn from(position: Position) -> Self {
+        Self { position, ty: None }
+    }
+}
+impl<'tcx> TyPosition<'tcx> {
+    fn new_deref_stable_for_result(precedence: i8, ty: Ty<'tcx>) -> Self {
+        Self {
+            position: Position::ReborrowStable(precedence),
+            ty: Some(ty),
+        }
+    }
+    fn position_for_result(self, cx: &LateContext<'tcx>) -> Position {
+        match (self.position, self.ty) {
+            (Position::ReborrowStable(precedence), Some(ty)) => {
+                Position::DerefStable(precedence, ty.is_sized(cx.tcx.at(DUMMY_SP), cx.param_env))
+            },
+            (position, _) => position,
+        }
+    }
+    fn position_for_arg(self) -> Position {
+        self.position
+    }
+}
+
 // Checks whether a type is stable when switching to auto dereferencing,
-fn param_auto_deref_stability(ty: Ty<'_>, precedence: i8) -> Position {
+fn ty_auto_deref_stability<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>, precedence: i8) -> TyPosition<'tcx> {
     let ty::Ref(_, mut ty, _) = *ty.kind() else {
-        return Position::Other(precedence);
+        return Position::Other(precedence).into();
     };
 
     loop {
@@ -932,35 +987,38 @@ fn param_auto_deref_stability(ty: Ty<'_>, precedence: i8) -> Position {
                 ty = ref_ty;
                 continue;
             },
-            ty::Infer(_)
+            ty::Param(_) => TyPosition::new_deref_stable_for_result(precedence, ty),
-            | ty::Error(_)
+            ty::Infer(_) | ty::Error(_) | ty::Bound(..) | ty::Opaque(..) | ty::Placeholder(_) | ty::Dynamic(..) => {
-            | ty::Param(_)
+                Position::ReborrowStable(precedence).into()
-            | ty::Bound(..)
-            | ty::Opaque(..)
-            | ty::Placeholder(_)
-            | ty::Dynamic(..) => Position::ReborrowStable(precedence),
-            ty::Adt(..) if ty.has_placeholders() || ty.has_param_types_or_consts() => {
-                Position::ReborrowStable(precedence)
             },
-            ty::Adt(..)
+            ty::Adt(..) if ty.has_placeholders() || ty.has_opaque_types() => {
-            | ty::Bool
+                Position::ReborrowStable(precedence).into()
+            },
+            ty::Adt(_, substs) if substs.has_param_types_or_consts() => {
+                TyPosition::new_deref_stable_for_result(precedence, ty)
+            },
+            ty::Bool
             | ty::Char
             | ty::Int(_)
             | ty::Uint(_)
-            | ty::Float(_)
-            | ty::Foreign(_)
-            | ty::Str
             | ty::Array(..)
-            | ty::Slice(..)
+            | ty::Float(_)
             | ty::RawPtr(..)
+            | ty::FnPtr(_) => Position::DerefStable(precedence, true).into(),
+            ty::Str | ty::Slice(..) => Position::DerefStable(precedence, false).into(),
+            ty::Adt(..)
+            | ty::Foreign(_)
             | ty::FnDef(..)
-            | ty::FnPtr(_)
-            | ty::Closure(..)
             | ty::Generator(..)
             | ty::GeneratorWitness(..)
+            | ty::Closure(..)
             | ty::Never
             | ty::Tuple(_)
-            | ty::Projection(_) => Position::DerefStable(precedence),
+            | ty::Projection(_) => Position::DerefStable(
+                precedence,
+                ty.is_sized(cx.tcx.at(DUMMY_SP), cx.param_env.without_caller_bounds()),
+            )
+            .into(),
         };
     }
 }
@@ -1040,34 +1098,64 @@ fn report<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>, state: State, data
                 diag.span_suggestion(data.span, "change this to", sugg, app);
             });
         },
-        State::ExplicitDeref { deref_span_id } => {
+        State::ExplicitDeref { mutability } => {
-            let (span, hir_id, precedence) = if let Some((span, hir_id)) = deref_span_id
+            if matches!(
+                expr.kind,
+                ExprKind::Block(..)
+                    | ExprKind::ConstBlock(_)
+                    | ExprKind::If(..)
+                    | ExprKind::Loop(..)
+                    | ExprKind::Match(..)
+            ) && matches!(data.position, Position::DerefStable(_, true))
+            {
+                // Rustc bug: auto deref doesn't work on block expression when targeting sized types.
+                return;
+            }
+
+            let (prefix, precedence) = if let Some(mutability) = mutability
                 && !cx.typeck_results().expr_ty(expr).is_ref()
             {
-                (span, hir_id, PREC_PREFIX)
+                let prefix = match mutability {
+                    Mutability::Not => "&",
+                    Mutability::Mut => "&mut ",
+                };
+                (prefix, 0)
             } else {
-                (data.span, data.hir_id, data.position.precedence())
+                ("", data.position.precedence())
             };
             span_lint_hir_and_then(
                 cx,
                 EXPLICIT_AUTO_DEREF,
-                hir_id,
+                data.hir_id,
-                span,
+                data.span,
                 "deref which would be done by auto-deref",
                 |diag| {
                     let mut app = Applicability::MachineApplicable;
-                    let (snip, snip_is_macro) = snippet_with_context(cx, expr.span, span.ctxt(), "..", &mut app);
+                    let (snip, snip_is_macro) = snippet_with_context(cx, expr.span, data.span.ctxt(), "..", &mut app);
                     let sugg =
                         if !snip_is_macro && expr.precedence().order() < precedence && !has_enclosing_paren(&snip) {
-                            format!("({})", snip)
+                            format!("{}({})", prefix, snip)
                         } else {
-                            snip.into()
+                            format!("{}{}", prefix, snip)
                         };
-                    diag.span_suggestion(span, "try this", sugg, app);
+                    diag.span_suggestion(data.span, "try this", sugg, app);
                 },
             );
         },
         State::ExplicitDerefField { .. } => {
+            if matches!(
+                expr.kind,
+                ExprKind::Block(..)
+                    | ExprKind::ConstBlock(_)
+                    | ExprKind::If(..)
+                    | ExprKind::Loop(..)
+                    | ExprKind::Match(..)
+            ) && matches!(data.position, Position::DerefStable(_, true))
+            {
+                // Rustc bug: auto deref doesn't work on block expression when targeting sized types.
+                return;
+            }
+
             span_lint_hir_and_then(
                 cx,
                 EXPLICIT_AUTO_DEREF,
@@ -1081,7 +1169,7 @@ fn report<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>, state: State, data
                 },
             );
         },
-        State::Borrow | State::Reborrow { .. } => (),
+        State::Borrow { .. } | State::Reborrow { .. } => (),
     }
 }
 

clippy_lints/src/disallowed_names.rs

@@ -6,7 +6,7 @@ use rustc_session::{declare_tool_lint, impl_lint_pass};
 
 declare_clippy_lint! {
     /// ### What it does
-    /// Checks for usage of blacklisted names for variables, such
+    /// Checks for usage of disallowed names for variables, such
     /// as `foo`.
     ///
     /// ### Why is this bad?
@@ -18,21 +18,21 @@ declare_clippy_lint! {
     /// let foo = 3.14;
     /// ```
     #[clippy::version = "pre 1.29.0"]
-    pub BLACKLISTED_NAME,
+    pub DISALLOWED_NAMES,
     style,
-    "usage of a blacklisted/placeholder name"
+    "usage of a disallowed/placeholder name"
 }
 
 #[derive(Clone, Debug)]
-pub struct BlacklistedName {
+pub struct DisallowedNames {
-    blacklist: FxHashSet<String>,
+    disallow: FxHashSet<String>,
     test_modules_deep: u32,
 }
 
-impl BlacklistedName {
+impl DisallowedNames {
-    pub fn new(blacklist: FxHashSet<String>) -> Self {
+    pub fn new(disallow: FxHashSet<String>) -> Self {
         Self {
-            blacklist,
+            disallow,
             test_modules_deep: 0,
         }
     }
@@ -42,9 +42,9 @@ impl BlacklistedName {
     }
 }
 
-impl_lint_pass!(BlacklistedName => [BLACKLISTED_NAME]);
+impl_lint_pass!(DisallowedNames => [DISALLOWED_NAMES]);
 
-impl<'tcx> LateLintPass<'tcx> for BlacklistedName {
+impl<'tcx> LateLintPass<'tcx> for DisallowedNames {
     fn check_item(&mut self, cx: &LateContext<'_>, item: &Item<'_>) {
         if is_test_module_or_function(cx.tcx, item) {
             self.test_modules_deep = self.test_modules_deep.saturating_add(1);
@@ -58,12 +58,12 @@ impl<'tcx> LateLintPass<'tcx> for BlacklistedName {
         }
 
         if let PatKind::Binding(.., ident, _) = pat.kind {
-            if self.blacklist.contains(&ident.name.to_string()) {
+            if self.disallow.contains(&ident.name.to_string()) {
                 span_lint(
                     cx,
-                    BLACKLISTED_NAME,
+                    DISALLOWED_NAMES,
                     ident.span,
-                    &format!("use of a blacklisted/placeholder name `{}`", ident.name),
+                    &format!("use of a disallowed/placeholder name `{}`", ident.name),
                 );
             }
         }

clippy_lints/src/formatting.rs

@@ -1,4 +1,5 @@
 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 if_chain::if_chain;
 use rustc_ast::ast::{BinOpKind, Block, Expr, ExprKind, StmtKind, UnOp};
@@ -297,12 +298,11 @@ fn check_array(cx: &EarlyContext<'_>, expr: &Expr) {
 fn check_missing_else(cx: &EarlyContext<'_>, first: &Expr, second: &Expr) {
     if_chain! {
         if !first.span.from_expansion() && !second.span.from_expansion();
-        if let ExprKind::If(cond_expr, ..) = &first.kind;
+        if matches!(first.kind, ExprKind::If(..));
         if is_block(second) || is_if(second);
 
         // Proc-macros can give weird spans. Make sure this is actually an `if`.
-        if let Some(if_snip) = snippet_opt(cx, first.span.until(cond_expr.span));
+        if is_span_if(cx, first.span);
-        if if_snip.starts_with("if");
 
         // If there is a line break between the two expressions, don't lint.
         // If there is a non-whitespace character, this span came from a proc-macro.

clippy_lints/src/from_str_radix_10.rs

@@ -46,7 +46,7 @@ declare_lint_pass!(FromStrRadix10 => [FROM_STR_RADIX_10]);
 impl<'tcx> LateLintPass<'tcx> for FromStrRadix10 {
     fn check_expr(&mut self, cx: &LateContext<'tcx>, exp: &Expr<'tcx>) {
         if_chain! {
-            if let ExprKind::Call(maybe_path, arguments) = &exp.kind;
+            if let ExprKind::Call(maybe_path, [src, radix]) = &exp.kind;
             if let ExprKind::Path(QPath::TypeRelative(ty, pathseg)) = &maybe_path.kind;
 
             // check if the first part of the path is some integer primitive
@@ -60,20 +60,19 @@ impl<'tcx> LateLintPass<'tcx> for FromStrRadix10 {
             if pathseg.ident.name.as_str() == "from_str_radix";
 
             // check if the second argument is a primitive `10`
-            if arguments.len() == 2;
+            if let ExprKind::Lit(lit) = &radix.kind;
-            if let ExprKind::Lit(lit) = &arguments[1].kind;
             if let rustc_ast::ast::LitKind::Int(10, _) = lit.node;
 
             then {
-                let expr = if let ExprKind::AddrOf(_, _, expr) = &arguments[0].kind {
+                let expr = if let ExprKind::AddrOf(_, _, expr) = &src.kind {
                     let ty = cx.typeck_results().expr_ty(expr);
                     if is_ty_stringish(cx, ty) {
                         expr
                     } else {
-                        &arguments[0]
+                        &src
                     }
                 } else {
-                    &arguments[0]
+                    &src
                 };
 
                 let sugg = Sugg::hir_with_applicability(

clippy_lints/src/lib.register_all.rs

@@ -15,11 +15,10 @@ store.register_group(true, "clippy::all", Some("clippy_all"), vec![
     LintId::of(await_holding_invalid::AWAIT_HOLDING_INVALID_TYPE),
     LintId::of(await_holding_invalid::AWAIT_HOLDING_LOCK),
     LintId::of(await_holding_invalid::AWAIT_HOLDING_REFCELL_REF),
-    LintId::of(blacklisted_name::BLACKLISTED_NAME),
     LintId::of(blocks_in_if_conditions::BLOCKS_IN_IF_CONDITIONS),
     LintId::of(bool_assert_comparison::BOOL_ASSERT_COMPARISON),
-    LintId::of(booleans::LOGIC_BUG),
     LintId::of(booleans::NONMINIMAL_BOOL),
+    LintId::of(booleans::OVERLY_COMPLEX_BOOL_EXPR),
     LintId::of(borrow_deref_ref::BORROW_DEREF_REF),
     LintId::of(bytes_count_to_len::BYTES_COUNT_TO_LEN),
     LintId::of(casts::CAST_ABS_TO_UNSIGNED),
@@ -46,6 +45,7 @@ store.register_group(true, "clippy::all", Some("clippy_all"), vec![
     LintId::of(derive::DERIVE_ORD_XOR_PARTIAL_ORD),
     LintId::of(derive::DERIVE_PARTIAL_EQ_WITHOUT_EQ),
     LintId::of(disallowed_methods::DISALLOWED_METHODS),
+    LintId::of(disallowed_names::DISALLOWED_NAMES),
     LintId::of(disallowed_types::DISALLOWED_TYPES),
     LintId::of(doc::MISSING_SAFETY_DOC),
     LintId::of(doc::NEEDLESS_DOCTEST_MAIN),
@@ -144,7 +144,6 @@ store.register_group(true, "clippy::all", Some("clippy_all"), vec![
     LintId::of(matches::MATCH_STR_CASE_MISMATCH),
     LintId::of(matches::NEEDLESS_MATCH),
     LintId::of(matches::REDUNDANT_PATTERN_MATCHING),
-    LintId::of(matches::SIGNIFICANT_DROP_IN_SCRUTINEE),
     LintId::of(matches::SINGLE_MATCH),
     LintId::of(matches::WILDCARD_IN_OR_PATTERNS),
     LintId::of(mem_replace::MEM_REPLACE_OPTION_WITH_NONE),
@@ -267,6 +266,7 @@ store.register_group(true, "clippy::all", Some("clippy_all"), vec![
     LintId::of(option_env_unwrap::OPTION_ENV_UNWRAP),
     LintId::of(overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL),
     LintId::of(partialeq_ne_impl::PARTIALEQ_NE_IMPL),
+    LintId::of(partialeq_to_none::PARTIALEQ_TO_NONE),
     LintId::of(precedence::PRECEDENCE),
     LintId::of(ptr::CMP_NULL),
     LintId::of(ptr::INVALID_NULL_PTR_USAGE),

clippy_lints/src/lib.register_correctness.rs

@@ -8,7 +8,7 @@ store.register_group(true, "clippy::correctness", Some("clippy_correctness"), ve
     LintId::of(attrs::DEPRECATED_SEMVER),
     LintId::of(attrs::MISMATCHED_TARGET_OS),
     LintId::of(attrs::USELESS_ATTRIBUTE),
-    LintId::of(booleans::LOGIC_BUG),
+    LintId::of(booleans::OVERLY_COMPLEX_BOOL_EXPR),
     LintId::of(casts::CAST_REF_TO_MUT),
     LintId::of(casts::CAST_SLICE_DIFFERENT_SIZES),
     LintId::of(copies::IFS_SAME_COND),

clippy_lints/src/lib.register_lints.rs

@@ -55,11 +55,10 @@ store.register_lints(&[
     await_holding_invalid::AWAIT_HOLDING_INVALID_TYPE,
     await_holding_invalid::AWAIT_HOLDING_LOCK,
     await_holding_invalid::AWAIT_HOLDING_REFCELL_REF,
-    blacklisted_name::BLACKLISTED_NAME,
     blocks_in_if_conditions::BLOCKS_IN_IF_CONDITIONS,
     bool_assert_comparison::BOOL_ASSERT_COMPARISON,
-    booleans::LOGIC_BUG,
     booleans::NONMINIMAL_BOOL,
+    booleans::OVERLY_COMPLEX_BOOL_EXPR,
     borrow_as_ptr::BORROW_AS_PTR,
     borrow_deref_ref::BORROW_DEREF_REF,
     bytecount::NAIVE_BYTECOUNT,
@@ -116,6 +115,7 @@ store.register_lints(&[
     derive::EXPL_IMPL_CLONE_ON_COPY,
     derive::UNSAFE_DERIVE_DESERIALIZE,
     disallowed_methods::DISALLOWED_METHODS,
+    disallowed_names::DISALLOWED_NAMES,
     disallowed_script_idents::DISALLOWED_SCRIPT_IDENTS,
     disallowed_types::DISALLOWED_TYPES,
     doc::DOC_MARKDOWN,
@@ -244,6 +244,7 @@ store.register_lints(&[
     manual_assert::MANUAL_ASSERT,
     manual_async_fn::MANUAL_ASYNC_FN,
     manual_bits::MANUAL_BITS,
+    manual_instant_elapsed::MANUAL_INSTANT_ELAPSED,
     manual_non_exhaustive::MANUAL_NON_EXHAUSTIVE,
     manual_ok_or::MANUAL_OK_OR,
     manual_rem_euclid::MANUAL_REM_EUCLID,
@@ -453,6 +454,7 @@ store.register_lints(&[
     panic_unimplemented::UNIMPLEMENTED,
     panic_unimplemented::UNREACHABLE,
     partialeq_ne_impl::PARTIALEQ_NE_IMPL,
+    partialeq_to_none::PARTIALEQ_TO_NONE,
     pass_by_ref_or_value::LARGE_TYPES_PASSED_BY_VALUE,
     pass_by_ref_or_value::TRIVIALLY_COPY_PASS_BY_REF,
     path_buf_push_overwrite::PATH_BUF_PUSH_OVERWRITE,

clippy_lints/src/lib.register_nursery.rs

@@ -13,6 +13,7 @@ store.register_group(true, "clippy::nursery", Some("clippy_nursery"), vec![
     LintId::of(future_not_send::FUTURE_NOT_SEND),
     LintId::of(index_refutable_slice::INDEX_REFUTABLE_SLICE),
     LintId::of(let_if_seq::USELESS_LET_IF_SEQ),
+    LintId::of(matches::SIGNIFICANT_DROP_IN_SCRUTINEE),
     LintId::of(methods::ITER_WITH_DRAIN),
     LintId::of(missing_const_for_fn::MISSING_CONST_FOR_FN),
     LintId::of(mutable_debug_assertion::DEBUG_ASSERT_WITH_MUT_CALL),

clippy_lints/src/lib.register_pedantic.rs

@@ -49,6 +49,7 @@ store.register_group(true, "clippy::pedantic", Some("clippy_pedantic"), vec![
     LintId::of(loops::EXPLICIT_ITER_LOOP),
     LintId::of(macro_use::MACRO_USE_IMPORTS),
     LintId::of(manual_assert::MANUAL_ASSERT),
+    LintId::of(manual_instant_elapsed::MANUAL_INSTANT_ELAPSED),
     LintId::of(manual_ok_or::MANUAL_OK_OR),
     LintId::of(matches::MATCH_BOOL),
     LintId::of(matches::MATCH_ON_VEC_ITEMS),

clippy_lints/src/lib.register_style.rs

@@ -4,7 +4,6 @@
 
 store.register_group(true, "clippy::style", Some("clippy_style"), vec![
     LintId::of(assertions_on_constants::ASSERTIONS_ON_CONSTANTS),
-    LintId::of(blacklisted_name::BLACKLISTED_NAME),
     LintId::of(blocks_in_if_conditions::BLOCKS_IN_IF_CONDITIONS),
     LintId::of(bool_assert_comparison::BOOL_ASSERT_COMPARISON),
     LintId::of(casts::FN_TO_NUMERIC_CAST),
@@ -17,6 +16,7 @@ store.register_group(true, "clippy::style", Some("clippy_style"), vec![
     LintId::of(dereference::NEEDLESS_BORROW),
     LintId::of(derive::DERIVE_PARTIAL_EQ_WITHOUT_EQ),
     LintId::of(disallowed_methods::DISALLOWED_METHODS),
+    LintId::of(disallowed_names::DISALLOWED_NAMES),
     LintId::of(disallowed_types::DISALLOWED_TYPES),
     LintId::of(doc::MISSING_SAFETY_DOC),
     LintId::of(doc::NEEDLESS_DOCTEST_MAIN),
@@ -100,6 +100,7 @@ store.register_group(true, "clippy::style", Some("clippy_style"), vec![
     LintId::of(operators::ASSIGN_OP_PATTERN),
     LintId::of(operators::OP_REF),
     LintId::of(operators::PTR_EQ),
+    LintId::of(partialeq_to_none::PARTIALEQ_TO_NONE),
     LintId::of(ptr::CMP_NULL),
     LintId::of(ptr::PTR_ARG),
     LintId::of(question_mark::QUESTION_MARK),

clippy_lints/src/lib.register_suspicious.rs

@@ -22,7 +22,6 @@ store.register_group(true, "clippy::suspicious", Some("clippy_suspicious"), vec!
     LintId::of(loops::EMPTY_LOOP),
     LintId::of(loops::FOR_LOOPS_OVER_FALLIBLES),
     LintId::of(loops::MUT_RANGE_BOUND),
-    LintId::of(matches::SIGNIFICANT_DROP_IN_SCRUTINEE),
     LintId::of(methods::NO_EFFECT_REPLACE),
     LintId::of(methods::SUSPICIOUS_MAP),
     LintId::of(mut_key::MUTABLE_KEY_TYPE),

clippy_lints/src/lib.rs

@@ -178,7 +178,6 @@ mod assertions_on_result_states;
 mod async_yields_async;
 mod attrs;
 mod await_holding_invalid;
-mod blacklisted_name;
 mod blocks_in_if_conditions;
 mod bool_assert_comparison;
 mod booleans;
@@ -206,6 +205,7 @@ mod dereference;
 mod derivable_impls;
 mod derive;
 mod disallowed_methods;
+mod disallowed_names;
 mod disallowed_script_idents;
 mod disallowed_types;
 mod doc;
@@ -274,6 +274,7 @@ mod main_recursion;
 mod manual_assert;
 mod manual_async_fn;
 mod manual_bits;
+mod manual_instant_elapsed;
 mod manual_non_exhaustive;
 mod manual_ok_or;
 mod manual_rem_euclid;
@@ -332,6 +333,7 @@ mod overflow_check_conditional;
 mod panic_in_result_fn;
 mod panic_unimplemented;
 mod partialeq_ne_impl;
+mod partialeq_to_none;
 mod pass_by_ref_or_value;
 mod path_buf_push_overwrite;
 mod pattern_type_mismatch;
@@ -487,7 +489,7 @@ pub fn read_conf(sess: &Session) -> Conf {
         },
     };
 
-    let TryConf { conf, errors } = utils::conf::read(&file_name);
+    let TryConf { conf, errors, warnings } = utils::conf::read(&file_name);
     // all conf errors are non-fatal, we just use the default conf in case of error
     for error in errors {
         sess.err(&format!(
@@ -497,6 +499,15 @@ pub fn read_conf(sess: &Session) -> Conf {
         ));
     }
 
+    for warning in warnings {
+        sess.struct_warn(&format!(
+            "error reading Clippy's configuration file `{}`: {}",
+            file_name.display(),
+            format_error(warning)
+        ))
+        .emit();
+    }
+
     conf
 }
 
@@ -675,8 +686,8 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
     store.register_late_pass(|| Box::new(swap::Swap));
     store.register_late_pass(|| Box::new(overflow_check_conditional::OverflowCheckConditional));
     store.register_late_pass(|| Box::new(new_without_default::NewWithoutDefault::default()));
-    let blacklisted_names = conf.blacklisted_names.iter().cloned().collect::<FxHashSet<_>>();
+    let disallowed_names = conf.disallowed_names.iter().cloned().collect::<FxHashSet<_>>();
-    store.register_late_pass(move || Box::new(blacklisted_name::BlacklistedName::new(blacklisted_names.clone())));
+    store.register_late_pass(move || Box::new(disallowed_names::DisallowedNames::new(disallowed_names.clone())));
     let too_many_arguments_threshold = conf.too_many_arguments_threshold;
     let too_many_lines_threshold = conf.too_many_lines_threshold;
     store.register_late_pass(move || {
@@ -921,6 +932,8 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
     store.register_late_pass(move || Box::new(operators::Operators::new(verbose_bit_mask_threshold)));
     store.register_late_pass(|| Box::new(invalid_utf8_in_unchecked::InvalidUtf8InUnchecked));
     store.register_late_pass(|| Box::new(std_instead_of_core::StdReexports::default()));
+    store.register_late_pass(|| Box::new(manual_instant_elapsed::ManualInstantElapsed));
+    store.register_late_pass(|| Box::new(partialeq_to_none::PartialeqToNone));
     // add lints here, do not remove this comment, it's used in `new_lint`
 }
 

clippy_lints/src/loops/manual_memcpy.rs

@@ -119,11 +119,9 @@ fn build_manual_memcpy_suggestion<'tcx>(
 
     let print_limit = |end: &Expr<'_>, end_str: &str, base: &Expr<'_>, sugg: MinifyingSugg<'static>| {
         if_chain! {
-            if let ExprKind::MethodCall(method, len_args, _) = end.kind;
+            if let ExprKind::MethodCall(method, [recv], _) = end.kind;
             if method.ident.name == sym::len;
-            if len_args.len() == 1;
+            if path_to_local(recv) == path_to_local(base);
-            if let Some(arg) = len_args.get(0);
-            if path_to_local(arg) == path_to_local(base);
             then {
                 if sugg.to_string() == end_str {
                     sugg::EMPTY.into()
@@ -343,10 +341,8 @@ fn get_slice_like_element_ty<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> Opti
 
 fn fetch_cloned_expr<'tcx>(expr: &'tcx Expr<'tcx>) -> &'tcx Expr<'tcx> {
     if_chain! {
-        if let ExprKind::MethodCall(method, args, _) = expr.kind;
+        if let ExprKind::MethodCall(method, [arg], _) = expr.kind;
         if method.ident.name == sym::clone;
-        if args.len() == 1;
-        if let Some(arg) = args.get(0);
         then { arg } else { expr }
     }
 }

clippy_lints/src/loops/needless_range_loop.rs

@@ -188,10 +188,9 @@ pub(super) fn check<'tcx>(
 
 fn is_len_call(expr: &Expr<'_>, var: Symbol) -> bool {
     if_chain! {
-        if let ExprKind::MethodCall(method, len_args, _) = expr.kind;
+        if let ExprKind::MethodCall(method, [recv], _) = expr.kind;
-        if len_args.len() == 1;
         if method.ident.name == sym::len;
-        if let ExprKind::Path(QPath::Resolved(_, path)) = len_args[0].kind;
+        if let ExprKind::Path(QPath::Resolved(_, path)) = recv.kind;
         if path.segments.len() == 1;
         if path.segments[0].ident.name == var;
         then {

clippy_lints/src/manual_instant_elapsed.rs

@@ -0,0 +1,69 @@
+use clippy_utils::diagnostics::span_lint_and_sugg;
+use rustc_errors::Applicability;
+use rustc_hir::{BinOpKind, Expr, ExprKind};
+use rustc_lint::{LateContext, LateLintPass};
+use rustc_session::{declare_lint_pass, declare_tool_lint};
+use rustc_span::source_map::Spanned;
+
+declare_clippy_lint! {
+    /// ### What it does
+    /// Lints subtraction between `Instant::now()` and another `Instant`.
+    ///
+    /// ### Why is this bad?
+    /// It is easy to accidentally write `prev_instant - Instant::now()`, which will always be 0ns
+    /// as `Instant` subtraction saturates.
+    ///
+    /// `prev_instant.elapsed()` also more clearly signals intention.
+    ///
+    /// ### Example
+    /// ```rust
+    /// use std::time::Instant;
+    /// let prev_instant = Instant::now();
+    /// let duration = Instant::now() - prev_instant;
+    /// ```
+    /// Use instead:
+    /// ```rust
+    /// use std::time::Instant;
+    /// let prev_instant = Instant::now();
+    /// let duration = prev_instant.elapsed();
+    /// ```
+    #[clippy::version = "1.64.0"]
+    pub MANUAL_INSTANT_ELAPSED,
+    pedantic,
+    "subtraction between `Instant::now()` and previous `Instant`"
+}
+
+declare_lint_pass!(ManualInstantElapsed => [MANUAL_INSTANT_ELAPSED]);
+
+impl LateLintPass<'_> for ManualInstantElapsed {
+    fn check_expr(&mut self, cx: &LateContext<'_>, expr: &'_ Expr<'_>) {
+        if let ExprKind::Binary(Spanned {node: BinOpKind::Sub, ..}, lhs, rhs) = expr.kind
+            && check_instant_now_call(cx, lhs)
+            && let ty_resolved = cx.typeck_results().expr_ty(rhs)
+            && let rustc_middle::ty::Adt(def, _) = ty_resolved.kind()
+            && clippy_utils::match_def_path(cx, def.did(), &clippy_utils::paths::INSTANT)
+            && let Some(sugg) = clippy_utils::sugg::Sugg::hir_opt(cx, rhs)
+        {
+            span_lint_and_sugg(
+                cx,
+                MANUAL_INSTANT_ELAPSED,
+                expr.span,
+                "manual implementation of `Instant::elapsed`",
+                "try",
+                format!("{}.elapsed()", sugg.maybe_par()),
+                Applicability::MachineApplicable,
+            );
+        }
+    }
+}
+
+fn check_instant_now_call(cx: &LateContext<'_>, expr_block: &'_ Expr<'_>) -> bool {
+    if let ExprKind::Call(fn_expr, []) = expr_block.kind
+        && let Some(fn_id) = clippy_utils::path_def_id(cx, fn_expr)
+        && clippy_utils::match_def_path(cx, fn_id, &clippy_utils::paths::INSTANT_NOW)
+    {
+        true
+    } else {
+        false
+    }
+}

clippy_lints/src/manual_ok_or.rs

@@ -47,17 +47,14 @@ impl<'tcx> LateLintPass<'tcx> for ManualOkOr {
         }
 
         if_chain! {
-            if let ExprKind::MethodCall(method_segment, args, _) = scrutinee.kind;
+            if let ExprKind::MethodCall(method_segment, [receiver, or_expr, map_expr], _) = scrutinee.kind;
             if method_segment.ident.name == sym!(map_or);
-            if args.len() == 3;
+            let ty = cx.typeck_results().expr_ty(receiver);
-            let method_receiver = &args[0];
-            let ty = cx.typeck_results().expr_ty(method_receiver);
             if is_type_diagnostic_item(cx, ty, sym::Option);
-            let or_expr = &args[1];
+            if is_ok_wrapping(cx, map_expr);
-            if is_ok_wrapping(cx, &args[2]);
             if let ExprKind::Call(Expr { kind: ExprKind::Path(err_path), .. }, &[ref err_arg]) = or_expr.kind;
             if is_lang_ctor(cx, err_path, ResultErr);
-            if let Some(method_receiver_snippet) = snippet_opt(cx, method_receiver.span);
+            if let Some(method_receiver_snippet) = snippet_opt(cx, receiver.span);
             if let Some(err_arg_snippet) = snippet_opt(cx, err_arg.span);
             if let Some(indent) = indent_of(cx, scrutinee.span);
             then {

clippy_lints/src/map_err_ignore.rs

@@ -113,10 +113,10 @@ impl<'tcx> LateLintPass<'tcx> for MapErrIgnore {
         }
 
         // check if this is a method call (e.g. x.foo())
-        if let ExprKind::MethodCall(method, args, _) = e.kind {
+        if let ExprKind::MethodCall(method, [_, arg], _) = e.kind {
             // only work if the method name is `map_err` and there are only 2 arguments (e.g. x.map_err(|_|[1]
             // Enum::Variant[2]))
-            if method.ident.as_str() == "map_err" && args.len() == 2 {
+            if method.ident.name == sym!(map_err) {
                 // make sure the first argument is a closure, and grab the CaptureRef, BodyId, and fn_decl_span
                 // fields
                 if let ExprKind::Closure(&Closure {
@@ -124,7 +124,7 @@ impl<'tcx> LateLintPass<'tcx> for MapErrIgnore {
                     body,
                     fn_decl_span,
                     ..
-                }) = args[1].kind
+                }) = arg.kind
                 {
                     // check if this is by Reference (meaning there's no move statement)
                     if capture_clause == CaptureBy::Ref {

clippy_lints/src/map_unit_fn.rs

@@ -97,11 +97,7 @@ declare_clippy_lint! {
 declare_lint_pass!(MapUnit => [OPTION_MAP_UNIT_FN, RESULT_MAP_UNIT_FN]);
 
 fn is_unit_type(ty: Ty<'_>) -> bool {
-    match ty.kind() {
+    ty.is_unit() || ty.is_never()
-        ty::Tuple(slice) => slice.is_empty(),
-        ty::Never => true,
-        _ => false,
-    }
 }
 
 fn is_unit_function(cx: &LateContext<'_>, expr: &hir::Expr<'_>) -> bool {

clippy_lints/src/matches/match_as_ref.rs

@@ -72,10 +72,10 @@ fn is_ref_some_arm(cx: &LateContext<'_>, arm: &Arm<'_>) -> Option<BindingAnnotat
         if is_lang_ctor(cx, qpath, LangItem::OptionSome);
         if let PatKind::Binding(rb, .., ident, _) = first_pat.kind;
         if rb == BindingAnnotation::Ref || rb == BindingAnnotation::RefMut;
-        if let ExprKind::Call(e, args) = peel_blocks(arm.body).kind;
+        if let ExprKind::Call(e, [arg]) = peel_blocks(arm.body).kind;
         if let ExprKind::Path(ref some_path) = e.kind;
-        if is_lang_ctor(cx, some_path, LangItem::OptionSome) && args.len() == 1;
+        if is_lang_ctor(cx, some_path, LangItem::OptionSome);
-        if let ExprKind::Path(QPath::Resolved(_, path2)) = args[0].kind;
+        if let ExprKind::Path(QPath::Resolved(_, path2)) = arg.kind;
         if path2.segments.len() == 1 && ident.name == path2.segments[0].ident.name;
         then {
             return Some(rb)

clippy_lints/src/matches/mod.rs

@@ -21,8 +21,8 @@ mod single_match;
 mod try_err;
 mod wild_in_or_pats;
 
-use clippy_utils::source::{snippet_opt, span_starts_with, walk_span_to_context};
+use clippy_utils::source::{snippet_opt, walk_span_to_context};
-use clippy_utils::{higher, in_constant, meets_msrv, msrvs};
+use clippy_utils::{higher, in_constant, is_span_match, meets_msrv, msrvs};
 use rustc_hir::{Arm, Expr, ExprKind, Local, MatchSource, Pat};
 use rustc_lexer::{tokenize, TokenKind};
 use rustc_lint::{LateContext, LateLintPass, LintContext};
@@ -835,7 +835,7 @@ declare_clippy_lint! {
     /// ```
     #[clippy::version = "1.60.0"]
     pub SIGNIFICANT_DROP_IN_SCRUTINEE,
-    suspicious,
+    nursery,
     "warns when a temporary of a type with a drop with a significant side-effect might have a surprising lifetime"
 }
 
@@ -949,7 +949,7 @@ impl<'tcx> LateLintPass<'tcx> for Matches {
         let from_expansion = expr.span.from_expansion();
 
         if let ExprKind::Match(ex, arms, source) = expr.kind {
-            if source == MatchSource::Normal && !span_starts_with(cx, expr.span, "match") {
+            if source == MatchSource::Normal && !is_span_match(cx, expr.span) {
                 return;
             }
             if matches!(source, MatchSource::Normal | MatchSource::ForLoopDesugar) {

clippy_lints/src/matches/try_err.rs

@@ -23,12 +23,10 @@ pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>, scrutine
     //         val,
     // };
     if_chain! {
-        if let ExprKind::Call(match_fun, try_args) = scrutinee.kind;
+        if let ExprKind::Call(match_fun, [try_arg, ..]) = scrutinee.kind;
         if let ExprKind::Path(ref match_fun_path) = match_fun.kind;
         if matches!(match_fun_path, QPath::LangItem(LangItem::TryTraitBranch, ..));
-        if let Some(try_arg) = try_args.get(0);
+        if let ExprKind::Call(err_fun, [err_arg, ..]) = try_arg.kind;
-        if let ExprKind::Call(err_fun, err_args) = try_arg.kind;
-        if let Some(err_arg) = err_args.get(0);
         if let ExprKind::Path(ref err_fun_path) = err_fun.kind;
         if is_lang_ctor(cx, err_fun_path, ResultErr);
         if let Some(return_ty) = find_return_type(cx, &expr.kind);

clippy_lints/src/mem_replace.rs

@@ -163,8 +163,7 @@ fn check_replace_with_uninit(cx: &LateContext<'_>, src: &Expr<'_>, dest: &Expr<'
     }
 
     if_chain! {
-        if let ExprKind::Call(repl_func, repl_args) = src.kind;
+        if let ExprKind::Call(repl_func, []) = src.kind;
-        if repl_args.is_empty();
         if let ExprKind::Path(ref repl_func_qpath) = repl_func.kind;
         if let Some(repl_def_id) = cx.qpath_res(repl_func_qpath, repl_func.hir_id).opt_def_id();
         then {
@@ -246,11 +245,10 @@ impl<'tcx> LateLintPass<'tcx> for MemReplace {
     fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
         if_chain! {
             // Check that `expr` is a call to `mem::replace()`
-            if let ExprKind::Call(func, func_args) = expr.kind;
+            if let ExprKind::Call(func, [dest, src]) = expr.kind;
             if let ExprKind::Path(ref func_qpath) = func.kind;
             if let Some(def_id) = cx.qpath_res(func_qpath, func.hir_id).opt_def_id();
             if cx.tcx.is_diagnostic_item(sym::mem_replace, def_id);
-            if let [dest, src] = func_args;
             then {
                 check_replace_option_with_none(cx, src, dest, expr.span);
                 check_replace_with_uninit(cx, src, dest, expr.span);

clippy_lints/src/methods/clone_on_copy.rs

@@ -4,7 +4,7 @@ use clippy_utils::source::snippet_with_context;
 use clippy_utils::sugg;
 use clippy_utils::ty::is_copy;
 use rustc_errors::Applicability;
-use rustc_hir::{BindingAnnotation, Expr, ExprKind, MatchSource, Node, PatKind};
+use rustc_hir::{BindingAnnotation, Expr, ExprKind, MatchSource, Node, PatKind, QPath};
 use rustc_lint::LateContext;
 use rustc_middle::ty::{self, adjustment::Adjust};
 use rustc_span::symbol::{sym, Symbol};
@@ -86,6 +86,11 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>, method_name: Symbol,
                 {
                     return;
                 },
+                // ? 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::MethodCall(_, [self_arg, ..], _) if expr.hir_id == self_arg.hir_id => true,
                 ExprKind::Match(_, _, MatchSource::TryDesugar | MatchSource::AwaitDesugar)
                 | ExprKind::Field(..)

clippy_lints/src/methods/expect_used.rs

@@ -12,9 +12,9 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &hir::Expr<'_>, recv: &hir::Expr
     let obj_ty = cx.typeck_results().expr_ty(recv).peel_refs();
 
     let mess = if is_type_diagnostic_item(cx, obj_ty, sym::Option) {
-        Some((EXPECT_USED, "an Option", "None"))
+        Some((EXPECT_USED, "an Option", "None", ""))
     } else if is_type_diagnostic_item(cx, obj_ty, sym::Result) {
-        Some((EXPECT_USED, "a Result", "Err"))
+        Some((EXPECT_USED, "a Result", "Err", "an "))
     } else {
         None
     };
@@ -23,14 +23,14 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &hir::Expr<'_>, recv: &hir::Expr
         return;
     }
 
-    if let Some((lint, kind, none_value)) = mess {
+    if let Some((lint, kind, none_value, none_prefix)) = mess {
         span_lint_and_help(
             cx,
             lint,
             expr.span,
-            &format!("used `expect()` on `{}` value", kind,),
+            &format!("used `expect()` on `{kind}` value"),
             None,
-            &format!("if this value is an `{}`, it will panic", none_value,),
+            &format!("if this value is {none_prefix}`{none_value}`, it will panic"),
         );
     }
 }

clippy_lints/src/methods/mod.rs

@@ -204,6 +204,17 @@ declare_clippy_lint! {
     /// option.expect("more helpful message");
     /// result.expect("more helpful message");
     /// ```
+    ///
+    /// If [expect_used](#expect_used) is enabled, instead:
+    /// ```rust,ignore
+    /// # let option = Some(1);
+    /// # let result: Result<usize, ()> = Ok(1);
+    /// option?;
+    ///
+    /// // or
+    ///
+    /// result?;
+    /// ```
     #[clippy::version = "1.45.0"]
     pub UNWRAP_USED,
     restriction,

clippy_lints/src/methods/unwrap_used.rs

@@ -1,20 +1,20 @@
 use clippy_utils::diagnostics::span_lint_and_help;
-use clippy_utils::is_in_test_function;
 use clippy_utils::ty::is_type_diagnostic_item;
+use clippy_utils::{is_in_test_function, is_lint_allowed};
 use rustc_hir as hir;
 use rustc_lint::LateContext;
 use rustc_span::sym;
 
-use super::UNWRAP_USED;
+use super::{EXPECT_USED, UNWRAP_USED};
 
 /// lint use of `unwrap()` for `Option`s and `Result`s
 pub(super) fn check(cx: &LateContext<'_>, expr: &hir::Expr<'_>, recv: &hir::Expr<'_>, allow_unwrap_in_tests: bool) {
     let obj_ty = cx.typeck_results().expr_ty(recv).peel_refs();
 
     let mess = if is_type_diagnostic_item(cx, obj_ty, sym::Option) {
-        Some((UNWRAP_USED, "an Option", "None"))
+        Some((UNWRAP_USED, "an Option", "None", ""))
     } else if is_type_diagnostic_item(cx, obj_ty, sym::Result) {
-        Some((UNWRAP_USED, "a Result", "Err"))
+        Some((UNWRAP_USED, "a Result", "Err", "an "))
     } else {
         None
     };
@@ -23,18 +23,23 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &hir::Expr<'_>, recv: &hir::Expr
         return;
     }
 
-    if let Some((lint, kind, none_value)) = mess {
+    if let Some((lint, kind, none_value, none_prefix)) = mess {
+        let help = if is_lint_allowed(cx, EXPECT_USED, expr.hir_id) {
+            format!(
+                "if you don't want to handle the `{none_value}` case gracefully, consider \
+                using `expect()` to provide a better panic message"
+            )
+        } else {
+            format!("if this value is {none_prefix}`{none_value}`, it will panic")
+        };
+
         span_lint_and_help(
             cx,
             lint,
             expr.span,
-            &format!("used `unwrap()` on `{}` value", kind,),
+            &format!("used `unwrap()` on `{kind}` value"),
             None,
-            &format!(
+            &help,
-                "if you don't want to handle the `{}` case gracefully, consider \
-                using `expect()` to provide a better panic message",
-                none_value,
-            ),
         );
     }
 }

clippy_lints/src/missing_const_for_fn.rs

@@ -1,7 +1,9 @@
 use clippy_utils::diagnostics::span_lint;
 use clippy_utils::qualify_min_const_fn::is_min_const_fn;
 use clippy_utils::ty::has_drop;
-use clippy_utils::{fn_has_unsatisfiable_preds, is_entrypoint_fn, meets_msrv, msrvs, trait_ref_of_method};
+use clippy_utils::{
+    fn_has_unsatisfiable_preds, is_entrypoint_fn, is_from_proc_macro, meets_msrv, msrvs, trait_ref_of_method,
+};
 use rustc_hir as hir;
 use rustc_hir::def_id::CRATE_DEF_ID;
 use rustc_hir::intravisit::FnKind;
@@ -86,10 +88,10 @@ impl MissingConstForFn {
 impl<'tcx> LateLintPass<'tcx> for MissingConstForFn {
     fn check_fn(
         &mut self,
-        cx: &LateContext<'_>,
+        cx: &LateContext<'tcx>,
-        kind: FnKind<'_>,
+        kind: FnKind<'tcx>,
         _: &FnDecl<'_>,
-        _: &Body<'_>,
+        body: &Body<'tcx>,
         span: Span,
         hir_id: HirId,
     ) {
@@ -124,7 +126,7 @@ impl<'tcx> LateLintPass<'tcx> for MissingConstForFn {
             FnKind::Method(_, sig, ..) => {
                 if trait_ref_of_method(cx, def_id).is_some()
                     || already_const(sig.header)
-                    || method_accepts_dropable(cx, sig.decl.inputs)
+                    || method_accepts_droppable(cx, sig.decl.inputs)
                 {
                     return;
                 }
@@ -144,6 +146,10 @@ impl<'tcx> LateLintPass<'tcx> for MissingConstForFn {
             }
         }
 
+        if is_from_proc_macro(cx, &(&kind, body, hir_id, span)) {
+            return;
+        }
+
         let mir = cx.tcx.optimized_mir(def_id);
 
         if let Err((span, err)) = is_min_const_fn(cx.tcx, mir, self.msrv) {
@@ -159,7 +165,7 @@ impl<'tcx> LateLintPass<'tcx> for MissingConstForFn {
 
 /// Returns true if any of the method parameters is a type that implements `Drop`. The method
 /// can't be made const then, because `drop` can't be const-evaluated.
-fn method_accepts_dropable(cx: &LateContext<'_>, param_tys: &[hir::Ty<'_>]) -> bool {
+fn method_accepts_droppable(cx: &LateContext<'_>, param_tys: &[hir::Ty<'_>]) -> bool {
     // If any of the params are droppable, return true
     param_tys.iter().any(|hir_ty| {
         let ty_ty = hir_ty_to_ty(cx.tcx, hir_ty);

clippy_lints/src/missing_doc.rs

@@ -7,7 +7,8 @@
 
 use clippy_utils::attrs::is_doc_hidden;
 use clippy_utils::diagnostics::span_lint;
-use rustc_ast::ast;
+use clippy_utils::is_from_proc_macro;
+use rustc_ast::ast::{self, MetaItem, MetaItemKind};
 use rustc_hir as hir;
 use rustc_lint::{LateContext, LateLintPass, LintContext};
 use rustc_middle::ty::DefIdTree;
@@ -57,6 +58,20 @@ impl MissingDoc {
         *self.doc_hidden_stack.last().expect("empty doc_hidden_stack")
     }
 
+    fn has_include(meta: Option<MetaItem>) -> bool {
+        if_chain! {
+            if let Some(meta) = meta;
+            if let MetaItemKind::List(list) = meta.kind;
+            if let Some(meta) = list.get(0);
+            if let Some(name) = meta.ident();
+            then {
+                name.name == sym::include
+            } else {
+                false
+            }
+        }
+    }
+
     fn check_missing_docs_attrs(
         &self,
         cx: &LateContext<'_>,
@@ -80,7 +95,9 @@ impl MissingDoc {
             return;
         }
 
-        let has_doc = attrs.iter().any(|a| a.doc_str().is_some());
+        let has_doc = attrs
+            .iter()
+            .any(|a| a.doc_str().is_some() || Self::has_include(a.meta()));
         if !has_doc {
             span_lint(
                 cx,
@@ -141,14 +158,18 @@ impl<'tcx> LateLintPass<'tcx> for MissingDoc {
         let (article, desc) = cx.tcx.article_and_description(it.def_id.to_def_id());
 
         let attrs = cx.tcx.hir().attrs(it.hir_id());
-        self.check_missing_docs_attrs(cx, attrs, it.span, article, desc);
+        if !is_from_proc_macro(cx, it) {
+            self.check_missing_docs_attrs(cx, attrs, it.span, article, desc);
+        }
     }
 
     fn check_trait_item(&mut self, cx: &LateContext<'tcx>, trait_item: &'tcx hir::TraitItem<'_>) {
         let (article, desc) = cx.tcx.article_and_description(trait_item.def_id.to_def_id());
 
         let attrs = cx.tcx.hir().attrs(trait_item.hir_id());
-        self.check_missing_docs_attrs(cx, attrs, trait_item.span, article, desc);
+        if !is_from_proc_macro(cx, trait_item) {
+            self.check_missing_docs_attrs(cx, attrs, trait_item.span, article, desc);
+        }
     }
 
     fn check_impl_item(&mut self, cx: &LateContext<'tcx>, impl_item: &'tcx hir::ImplItem<'_>) {
@@ -163,18 +184,24 @@ impl<'tcx> LateLintPass<'tcx> for MissingDoc {
 
         let (article, desc) = cx.tcx.article_and_description(impl_item.def_id.to_def_id());
         let attrs = cx.tcx.hir().attrs(impl_item.hir_id());
-        self.check_missing_docs_attrs(cx, attrs, impl_item.span, article, desc);
+        if !is_from_proc_macro(cx, impl_item) {
+            self.check_missing_docs_attrs(cx, attrs, impl_item.span, article, desc);
+        }
     }
 
     fn check_field_def(&mut self, cx: &LateContext<'tcx>, sf: &'tcx hir::FieldDef<'_>) {
         if !sf.is_positional() {
             let attrs = cx.tcx.hir().attrs(sf.hir_id);
-            self.check_missing_docs_attrs(cx, attrs, sf.span, "a", "struct field");
+            if !is_from_proc_macro(cx, sf) {
+                self.check_missing_docs_attrs(cx, attrs, sf.span, "a", "struct field");
+            }
         }
     }
 
     fn check_variant(&mut self, cx: &LateContext<'tcx>, v: &'tcx hir::Variant<'_>) {
         let attrs = cx.tcx.hir().attrs(v.id);
-        self.check_missing_docs_attrs(cx, attrs, v.span, "a", "variant");
+        if !is_from_proc_macro(cx, v) {
+            self.check_missing_docs_attrs(cx, attrs, v.span, "a", "variant");
+        }
     }
 }

clippy_lints/src/partialeq_to_none.rs

@@ -0,0 +1,104 @@
+use clippy_utils::{
+    diagnostics::span_lint_and_sugg, is_lang_ctor, peel_hir_expr_refs, peel_ref_operators, sugg,
+    ty::is_type_diagnostic_item,
+};
+use rustc_errors::Applicability;
+use rustc_hir::{BinOpKind, Expr, ExprKind, LangItem};
+use rustc_lint::{LateContext, LateLintPass};
+use rustc_session::{declare_lint_pass, declare_tool_lint};
+use rustc_span::sym;
+
+declare_clippy_lint! {
+    /// ### What it does
+    ///
+    /// Checks for binary comparisons to a literal `Option::None`.
+    ///
+    /// ### Why is this bad?
+    ///
+    /// A programmer checking if some `foo` is `None` via a comparison `foo == None`
+    /// is usually inspired from other programming languages (e.g. `foo is None`
+    /// in Python).
+    /// Checking if a value of type `Option<T>` is (not) equal to `None` in that
+    /// way relies on `T: PartialEq` to do the comparison, which is unneeded.
+    ///
+    /// ### Example
+    /// ```rust
+    /// fn foo(f: Option<u32>) -> &'static str {
+    ///     if f != None { "yay" } else { "nay" }
+    /// }
+    /// ```
+    /// Use instead:
+    /// ```rust
+    /// fn foo(f: Option<u32>) -> &'static str {
+    ///     if f.is_some() { "yay" } else { "nay" }
+    /// }
+    /// ```
+    #[clippy::version = "1.64.0"]
+    pub PARTIALEQ_TO_NONE,
+    style,
+    "Binary comparison to `Option<T>::None` relies on `T: PartialEq`, which is unneeded"
+}
+declare_lint_pass!(PartialeqToNone => [PARTIALEQ_TO_NONE]);
+
+impl<'tcx> LateLintPass<'tcx> for PartialeqToNone {
+    fn check_expr(&mut self, cx: &LateContext<'tcx>, e: &'tcx Expr<'_>) {
+        // Skip expanded code, as we have no control over it anyway...
+        if e.span.from_expansion() {
+            return;
+        }
+
+        // If the expression is of type `Option`
+        let is_ty_option =
+            |expr: &Expr<'_>| is_type_diagnostic_item(cx, cx.typeck_results().expr_ty(expr).peel_refs(), sym::Option);
+
+        // If the expression is a literal `Option::None`
+        let is_none_ctor = |expr: &Expr<'_>| {
+            matches!(&peel_hir_expr_refs(expr).0.kind,
+            ExprKind::Path(p) if is_lang_ctor(cx, p, LangItem::OptionNone))
+        };
+
+        let mut applicability = Applicability::MachineApplicable;
+
+        if let ExprKind::Binary(op, left_side, right_side) = e.kind {
+            // All other comparisons (e.g. `>= None`) have special meaning wrt T
+            let is_eq = match op.node {
+                BinOpKind::Eq => true,
+                BinOpKind::Ne => false,
+                _ => return,
+            };
+
+            // We are only interested in comparisons between `Option` and a literal `Option::None`
+            let scrutinee = match (
+                is_none_ctor(left_side) && is_ty_option(right_side),
+                is_none_ctor(right_side) && is_ty_option(left_side),
+            ) {
+                (true, false) => right_side,
+                (false, true) => left_side,
+                _ => return,
+            };
+
+            // Peel away refs/derefs (as long as we don't cross manual deref impls), as
+            // autoref/autoderef will take care of those
+            let sugg = format!(
+                "{}.{}",
+                sugg::Sugg::hir_with_applicability(cx, peel_ref_operators(cx, scrutinee), "..", &mut applicability)
+                    .maybe_par(),
+                if is_eq { "is_none()" } else { "is_some()" }
+            );
+
+            span_lint_and_sugg(
+                cx,
+                PARTIALEQ_TO_NONE,
+                e.span,
+                "binary comparison to literal `Option::None`",
+                if is_eq {
+                    "use `Option::is_none()` instead"
+                } else {
+                    "use `Option::is_some()` instead"
+                },
+                sugg,
+                applicability,
+            );
+        }
+    }
+}

clippy_lints/src/path_buf_push_overwrite.rs

@@ -46,11 +46,9 @@ declare_lint_pass!(PathBufPushOverwrite => [PATH_BUF_PUSH_OVERWRITE]);
 impl<'tcx> LateLintPass<'tcx> for PathBufPushOverwrite {
     fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
         if_chain! {
-            if let ExprKind::MethodCall(path, args, _) = expr.kind;
+            if let ExprKind::MethodCall(path, [recv, get_index_arg], _) = expr.kind;
             if path.ident.name == sym!(push);
-            if args.len() == 2;
+            if is_type_diagnostic_item(cx, cx.typeck_results().expr_ty(recv).peel_refs(), sym::PathBuf);
-            if is_type_diagnostic_item(cx, cx.typeck_results().expr_ty(&args[0]).peel_refs(), sym::PathBuf);
-            if let Some(get_index_arg) = args.get(1);
             if let ExprKind::Lit(ref lit) = get_index_arg.kind;
             if let LitKind::Str(ref path_lit, _) = lit.node;
             if let pushed_path = Path::new(path_lit.as_str());

clippy_lints/src/question_mark.rs

@@ -86,8 +86,7 @@ fn check_is_none_or_err_and_early_return<'tcx>(cx: &LateContext<'tcx>, expr: &Ex
     if_chain! {
         if let Some(higher::If { cond, then, r#else }) = higher::If::hir(expr);
         if !is_else_clause(cx.tcx, expr);
-        if let ExprKind::MethodCall(segment, args, _) = &cond.kind;
+        if let ExprKind::MethodCall(segment, [caller, ..], _) = &cond.kind;
-        if let Some(caller) = args.get(0);
         let caller_ty = cx.typeck_results().expr_ty(caller);
         let if_block = IfBlockType::IfIs(caller, caller_ty, segment.ident.name, then, r#else);
         if is_early_return(sym::Option, cx, &if_block) || is_early_return(sym::Result, cx, &if_block);

clippy_lints/src/ranges.rs

@@ -385,24 +385,24 @@ fn check_range_zip_with_len(cx: &LateContext<'_>, path: &PathSegment<'_>, args:
         if path.ident.as_str() == "zip";
         if let [iter, zip_arg] = args;
         // `.iter()` call
-        if let ExprKind::MethodCall(iter_path, iter_args, _) = iter.kind;
+        if let ExprKind::MethodCall(iter_path, [iter_caller, ..], _) = iter.kind;
         if iter_path.ident.name == sym::iter;
         // range expression in `.zip()` call: `0..x.len()`
         if let Some(higher::Range { start: Some(start), end: Some(end), .. }) = higher::Range::hir(zip_arg);
         if is_integer_const(cx, start, 0);
         // `.len()` call
-        if let ExprKind::MethodCall(len_path, len_args, _) = end.kind;
+        if let ExprKind::MethodCall(len_path, [len_caller], _) = end.kind;
-        if len_path.ident.name == sym::len && len_args.len() == 1;
+        if len_path.ident.name == sym::len;
         // `.iter()` and `.len()` called on same `Path`
-        if let ExprKind::Path(QPath::Resolved(_, iter_path)) = iter_args[0].kind;
+        if let ExprKind::Path(QPath::Resolved(_, iter_path)) = iter_caller.kind;
-        if let ExprKind::Path(QPath::Resolved(_, len_path)) = len_args[0].kind;
+        if let ExprKind::Path(QPath::Resolved(_, len_path)) = len_caller.kind;
-        if SpanlessEq::new(cx).eq_path_segments(&iter_path.segments, &len_path.segments);
+        if SpanlessEq::new(cx).eq_path_segments(iter_path.segments, len_path.segments);
         then {
             span_lint(cx,
                 RANGE_ZIP_WITH_LEN,
                 span,
                 &format!("it is more idiomatic to use `{}.iter().enumerate()`",
-                    snippet(cx, iter_args[0].span, "_"))
+                    snippet(cx, iter_caller.span, "_"))
             );
         }
     }

clippy_lints/src/redundant_closure_call.rs

@@ -1,5 +1,5 @@
 use clippy_utils::diagnostics::{span_lint, span_lint_and_then};
-use clippy_utils::source::snippet_with_applicability;
+use clippy_utils::sugg::Sugg;
 use if_chain::if_chain;
 use rustc_ast::ast;
 use rustc_ast::visit as ast_visit;
@@ -69,7 +69,7 @@ impl EarlyLintPass for RedundantClosureCall {
         if_chain! {
             if let ast::ExprKind::Call(ref paren, _) = expr.kind;
             if let ast::ExprKind::Paren(ref closure) = paren.kind;
-            if let ast::ExprKind::Closure(_, _, _, _, ref decl, ref block, _) = closure.kind;
+            if let ast::ExprKind::Closure(_, _, ref r#async, _, ref decl, ref block, _) = closure.kind;
             then {
                 let mut visitor = ReturnVisitor::new();
                 visitor.visit_expr(block);
@@ -81,10 +81,19 @@ impl EarlyLintPass for RedundantClosureCall {
                         "try not to call a closure in the expression where it is declared",
                         |diag| {
                             if decl.inputs.is_empty() {
-                                let mut app = Applicability::MachineApplicable;
+                                let app = Applicability::MachineApplicable;
-                                let hint =
+                                let mut hint = Sugg::ast(cx, block, "..");
-                                    snippet_with_applicability(cx, block.span, "..", &mut app).into_owned();
+
-                                diag.span_suggestion(expr.span, "try doing something like", hint, app);
+                                if r#async.is_async() {
+                                    // `async x` is a syntax error, so it becomes `async { x }`
+                                    if !matches!(block.kind, ast::ExprKind::Block(_, _)) {
+                                        hint = hint.blockify();
+                                    }
+
+                                    hint = hint.asyncify();
+                                }
+
+                                diag.span_suggestion(expr.span, "try doing something like", hint.to_string(), app);
                             }
                         },
                     );

clippy_lints/src/regex.rs

@@ -57,21 +57,20 @@ declare_lint_pass!(Regex => [INVALID_REGEX, TRIVIAL_REGEX]);
 impl<'tcx> LateLintPass<'tcx> for Regex {
     fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
         if_chain! {
-            if let ExprKind::Call(fun, args) = expr.kind;
+            if let ExprKind::Call(fun, [arg]) = expr.kind;
             if let ExprKind::Path(ref qpath) = fun.kind;
-            if args.len() == 1;
             if let Some(def_id) = cx.qpath_res(qpath, fun.hir_id).opt_def_id();
             then {
                 if match_def_path(cx, def_id, &paths::REGEX_NEW) ||
                    match_def_path(cx, def_id, &paths::REGEX_BUILDER_NEW) {
-                    check_regex(cx, &args[0], true);
+                    check_regex(cx, arg, true);
                 } else if match_def_path(cx, def_id, &paths::REGEX_BYTES_NEW) ||
                    match_def_path(cx, def_id, &paths::REGEX_BYTES_BUILDER_NEW) {
-                    check_regex(cx, &args[0], false);
+                    check_regex(cx, arg, false);
                 } else if match_def_path(cx, def_id, &paths::REGEX_SET_NEW) {
-                    check_set(cx, &args[0], true);
+                    check_set(cx, arg, true);
                 } else if match_def_path(cx, def_id, &paths::REGEX_BYTES_SET_NEW) {
-                    check_set(cx, &args[0], false);
+                    check_set(cx, arg, false);
                 }
             }
         }

clippy_lints/src/renamed_lints.rs

@@ -2,6 +2,7 @@
 
 #[rustfmt::skip]
 pub static RENAMED_LINTS: &[(&str, &str)] = &[
+    ("clippy::blacklisted_name", "clippy::disallowed_names"),
     ("clippy::block_in_if_condition_expr", "clippy::blocks_in_if_conditions"),
     ("clippy::block_in_if_condition_stmt", "clippy::blocks_in_if_conditions"),
     ("clippy::box_vec", "clippy::box_collection"),
@@ -14,6 +15,7 @@ pub static RENAMED_LINTS: &[(&str, &str)] = &[
     ("clippy::for_loop_over_result", "clippy::for_loops_over_fallibles"),
     ("clippy::identity_conversion", "clippy::useless_conversion"),
     ("clippy::if_let_some_result", "clippy::match_result_ok"),
+    ("clippy::logic_bug", "clippy::overly_complex_bool_expr"),
     ("clippy::new_without_default_derive", "clippy::new_without_default"),
     ("clippy::option_and_then_some", "clippy::bind_instead_of_map"),
     ("clippy::option_expect_used", "clippy::expect_used"),

clippy_lints/src/slow_vector_initialization.rs

@@ -233,15 +233,10 @@ impl<'a, 'tcx> VectorInitializationVisitor<'a, 'tcx> {
     /// Returns `true` if give expression is `repeat(0).take(...)`
     fn is_repeat_take(&self, expr: &Expr<'_>) -> bool {
         if_chain! {
-            if let ExprKind::MethodCall(take_path, take_args, _) = expr.kind;
+            if let ExprKind::MethodCall(take_path, [recv, len_arg, ..], _) = expr.kind;
             if take_path.ident.name == sym!(take);
-
             // Check that take is applied to `repeat(0)`
-            if let Some(repeat_expr) = take_args.get(0);
+            if self.is_repeat_zero(recv);
-            if self.is_repeat_zero(repeat_expr);
-
-            if let Some(len_arg) = take_args.get(1);
-
             then {
                 // Check that len expression is equals to `with_capacity` expression
                 if SpanlessEq::new(self.cx).eq_expr(len_arg, self.vec_alloc.len_expr) {

clippy_lints/src/stable_sort_primitive.rs

@@ -97,12 +97,11 @@ struct LintDetection {
 
 fn detect_stable_sort_primitive(cx: &LateContext<'_>, expr: &Expr<'_>) -> Option<LintDetection> {
     if_chain! {
-        if let ExprKind::MethodCall(method_name, args, _) = &expr.kind;
+        if let ExprKind::MethodCall(method_name, [slice, args @ ..], _) = &expr.kind;
-        if let Some(slice) = &args.get(0);
         if let Some(method) = SortingKind::from_stable_name(method_name.ident.name.as_str());
         if let Some(slice_type) = is_slice_of_primitives(cx, slice);
         then {
-            let args_str = args.iter().skip(1).map(|arg| Sugg::hir(cx, arg, "..").to_string()).collect::<Vec<String>>().join(", ");
+            let args_str = args.iter().map(|arg| Sugg::hir(cx, arg, "..").to_string()).collect::<Vec<String>>().join(", ");
             Some(LintDetection { slice_name: Sugg::hir(cx, slice, "..").to_string(), method, method_args: args_str, slice_type })
         } else {
             None

clippy_lints/src/unit_types/mod.rs

@@ -103,7 +103,7 @@ impl<'tcx> LateLintPass<'tcx> for UnitTypes {
         let_unit_value::check(cx, local);
     }
 
-    fn check_expr(&mut self, cx: &LateContext<'_>, expr: &Expr<'_>) {
+    fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) {
         unit_cmp::check(cx, expr);
         unit_arg::check(cx, expr);
     }

clippy_lints/src/unit_types/unit_arg.rs

@@ -1,4 +1,5 @@
 use clippy_utils::diagnostics::span_lint_and_then;
+use clippy_utils::is_from_proc_macro;
 use clippy_utils::source::{indent_of, reindent_multiline, snippet_opt};
 use if_chain::if_chain;
 use rustc_errors::Applicability;
@@ -7,7 +8,7 @@ use rustc_lint::LateContext;
 
 use super::{utils, UNIT_ARG};
 
-pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>) {
+pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) {
     if expr.span.from_expansion() {
         return;
     }
@@ -44,7 +45,7 @@ pub(super) fn check(cx: &LateContext<'_>, expr: &Expr<'_>) {
                     }
                 })
                 .collect::<Vec<_>>();
-            if !args_to_recover.is_empty() {
+            if !args_to_recover.is_empty() && !is_from_proc_macro(cx, expr) {
                 lint_unit_args(cx, expr, &args_to_recover);
             }
         },

clippy_lints/src/useless_conversion.rs

@@ -59,17 +59,17 @@ impl<'tcx> LateLintPass<'tcx> for UselessConversion {
                     ExprKind::Ret(Some(e)) | ExprKind::Break(_, Some(e)) => e,
                     _ => return,
                 };
-                if let ExprKind::Call(_, args) = e.kind {
+                if let ExprKind::Call(_, [arg, ..]) = e.kind {
-                    self.try_desugar_arm.push(args[0].hir_id);
+                    self.try_desugar_arm.push(arg.hir_id);
                 }
             },
 
-            ExprKind::MethodCall(name, .., args, _) => {
+            ExprKind::MethodCall(name, .., [recv, ..], _) => {
                 if is_trait_method(cx, e, sym::Into) && name.ident.as_str() == "into" {
                     let a = cx.typeck_results().expr_ty(e);
-                    let b = cx.typeck_results().expr_ty(&args[0]);
+                    let b = cx.typeck_results().expr_ty(recv);
                     if same_type_and_consts(a, b) {
-                        let sugg = snippet_with_macro_callsite(cx, args[0].span, "<expr>").to_string();
+                        let sugg = snippet_with_macro_callsite(cx, recv.span, "<expr>").to_string();
                         span_lint_and_sugg(
                             cx,
                             USELESS_CONVERSION,
@@ -90,9 +90,9 @@ impl<'tcx> LateLintPass<'tcx> for UselessConversion {
                         }
                     }
                     let a = cx.typeck_results().expr_ty(e);
-                    let b = cx.typeck_results().expr_ty(&args[0]);
+                    let b = cx.typeck_results().expr_ty(recv);
                     if same_type_and_consts(a, b) {
-                        let sugg = snippet(cx, args[0].span, "<expr>").into_owned();
+                        let sugg = snippet(cx, recv.span, "<expr>").into_owned();
                         span_lint_and_sugg(
                             cx,
                             USELESS_CONVERSION,
@@ -107,7 +107,7 @@ impl<'tcx> LateLintPass<'tcx> for UselessConversion {
                 if_chain! {
                     if is_trait_method(cx, e, sym::TryInto) && name.ident.name == sym::try_into;
                     let a = cx.typeck_results().expr_ty(e);
-                    let b = cx.typeck_results().expr_ty(&args[0]);
+                    let b = cx.typeck_results().expr_ty(recv);
                     if is_type_diagnostic_item(cx, a, sym::Result);
                     if let ty::Adt(_, substs) = a.kind();
                     if let Some(a_type) = substs.types().next();
@@ -126,14 +126,13 @@ impl<'tcx> LateLintPass<'tcx> for UselessConversion {
                 }
             },
 
-            ExprKind::Call(path, args) => {
+            ExprKind::Call(path, [arg]) => {
                 if_chain! {
-                    if args.len() == 1;
                     if let ExprKind::Path(ref qpath) = path.kind;
                     if let Some(def_id) = cx.qpath_res(qpath, path.hir_id).opt_def_id();
                     then {
                         let a = cx.typeck_results().expr_ty(e);
-                        let b = cx.typeck_results().expr_ty(&args[0]);
+                        let b = cx.typeck_results().expr_ty(arg);
                         if_chain! {
                             if match_def_path(cx, def_id, &paths::TRY_FROM);
                             if is_type_diagnostic_item(cx, a, sym::Result);
@@ -159,7 +158,7 @@ impl<'tcx> LateLintPass<'tcx> for UselessConversion {
                             if same_type_and_consts(a, b);
 
                             then {
-                                let sugg = Sugg::hir_with_macro_callsite(cx, &args[0], "<expr>").maybe_par();
+                                let sugg = Sugg::hir_with_macro_callsite(cx, arg, "<expr>").maybe_par();
                                 let sugg_msg =
                                     format!("consider removing `{}()`", snippet(cx, path.span, "From::from"));
                                 span_lint_and_sugg(

clippy_lints/src/utils/conf.rs

@@ -30,7 +30,7 @@ const DEFAULT_DOC_VALID_IDENTS: &[&str] = &[
     "MinGW",
     "CamelCase",
 ];
-const DEFAULT_BLACKLISTED_NAMES: &[&str] = &["foo", "baz", "quux"];
+const DEFAULT_DISALLOWED_NAMES: &[&str] = &["foo", "baz", "quux"];
 
 /// Holds information used by `MISSING_ENFORCED_IMPORT_RENAMES` lint.
 #[derive(Clone, Debug, Deserialize)]
@@ -68,6 +68,7 @@ pub enum DisallowedType {
 pub struct TryConf {
     pub conf: Conf,
     pub errors: Vec<Box<dyn Error>>,
+    pub warnings: Vec<Box<dyn Error>>,
 }
 
 impl TryConf {
@@ -75,6 +76,7 @@ impl TryConf {
         Self {
             conf: Conf::default(),
             errors: vec![Box::new(error)],
+            warnings: vec![],
         }
     }
 }
@@ -90,14 +92,14 @@ impl fmt::Display for ConfError {
 
 impl Error for ConfError {}
 
-fn conf_error(s: String) -> Box<dyn Error> {
+fn conf_error(s: impl Into<String>) -> Box<dyn Error> {
-    Box::new(ConfError(s))
+    Box::new(ConfError(s.into()))
 }
 
 macro_rules! define_Conf {
     ($(
         $(#[doc = $doc:literal])+
-        $(#[conf_deprecated($dep:literal)])?
+        $(#[conf_deprecated($dep:literal, $new_conf:ident)])?
         ($name:ident: $ty:ty = $default:expr),
     )*) => {
         /// Clippy lint configuration
@@ -137,17 +139,29 @@ macro_rules! define_Conf {
 
             fn visit_map<V>(self, mut map: V) -> Result<Self::Value, V::Error> where V: MapAccess<'de> {
                 let mut errors = Vec::new();
+                let mut warnings = Vec::new();
                 $(let mut $name = None;)*
                 // could get `Field` here directly, but get `str` first for diagnostics
                 while let Some(name) = map.next_key::<&str>()? {
                     match Field::deserialize(name.into_deserializer())? {
                         $(Field::$name => {
-                            $(errors.push(conf_error(format!("deprecated field `{}`. {}", name, $dep)));)?
+                            $(warnings.push(conf_error(format!("deprecated field `{}`. {}", name, $dep)));)?
                             match map.next_value() {
                                 Err(e) => errors.push(conf_error(e.to_string())),
                                 Ok(value) => match $name {
                                     Some(_) => errors.push(conf_error(format!("duplicate field `{}`", name))),
-                                    None => $name = Some(value),
+                                    None => {
+                                        $name = Some(value);
+                                        // $new_conf is the same as one of the defined `$name`s, so
+                                        // this variable is defined in line 2 of this function.
+                                        $(match $new_conf {
+                                            Some(_) => errors.push(conf_error(concat!(
+                                                "duplicate field `", stringify!($new_conf),
+                                                "` (provided as `", stringify!($name), "`)"
+                                            ))),
+                                            None => $new_conf = $name.clone(),
+                                        })?
+                                    },
                                 }
                             }
                         })*
@@ -156,7 +170,7 @@ macro_rules! define_Conf {
                     }
                 }
                 let conf = Conf { $($name: $name.unwrap_or_else(defaults::$name),)* };
-                Ok(TryConf { conf, errors })
+                Ok(TryConf { conf, errors, warnings })
             }
         }
 
@@ -203,12 +217,11 @@ define_Conf! {
     ///
     /// The minimum rust version that the project supports
     (msrv: Option<String> = None),
-    /// Lint: BLACKLISTED_NAME.
+    /// DEPRECATED LINT: BLACKLISTED_NAME.
     ///
-    /// The list of blacklisted names to lint about. NB: `bar` is not here since it has legitimate uses. The value
+    /// Use the Disallowed Names lint instead
-    /// `".."` can be used as part of the list to indicate, that the configured values should be appended to the
+    #[conf_deprecated("Please use `disallowed-names` instead", disallowed_names)]
-    /// default configuration of Clippy. By default any configuraction will replace the default value.
+    (blacklisted_names: Vec<String> = Vec::new()),
-    (blacklisted_names: Vec<String> = super::DEFAULT_BLACKLISTED_NAMES.iter().map(ToString::to_string).collect()),
     /// Lint: COGNITIVE_COMPLEXITY.
     ///
     /// The maximum cognitive complexity a function can have
@@ -216,8 +229,14 @@ define_Conf! {
     /// DEPRECATED LINT: CYCLOMATIC_COMPLEXITY.
     ///
     /// Use the Cognitive Complexity lint instead.
-    #[conf_deprecated("Please use `cognitive-complexity-threshold` instead")]
+    #[conf_deprecated("Please use `cognitive-complexity-threshold` instead", cognitive_complexity_threshold)]
-    (cyclomatic_complexity_threshold: Option<u64> = None),
+    (cyclomatic_complexity_threshold: u64 = 25),
+    /// Lint: DISALLOWED_NAMES.
+    ///
+    /// The list of disallowed names to lint about. NB: `bar` is not here since it has legitimate uses. The value
+    /// `".."` can be used as part of the list to indicate, that the configured values should be appended to the
+    /// default configuration of Clippy. By default any configuration will replace the default value.
+    (disallowed_names: Vec<String> = super::DEFAULT_DISALLOWED_NAMES.iter().map(ToString::to_string).collect()),
     /// Lint: DOC_MARKDOWN.
     ///
     /// The list of words this lint should not consider as identifiers needing ticks. The value
@@ -420,7 +439,7 @@ pub fn read(path: &Path) -> TryConf {
     match toml::from_str::<TryConf>(&content) {
         Ok(mut conf) => {
             extend_vec_if_indicator_present(&mut conf.conf.doc_valid_idents, DEFAULT_DOC_VALID_IDENTS);
-            extend_vec_if_indicator_present(&mut conf.conf.blacklisted_names, DEFAULT_BLACKLISTED_NAMES);
+            extend_vec_if_indicator_present(&mut conf.conf.disallowed_names, DEFAULT_DISALLOWED_NAMES);
 
             conf
         },

clippy_lints/src/utils/internal_lints.rs

@@ -496,12 +496,14 @@ impl<'tcx> LateLintPass<'tcx> for LintWithoutLintPass {
                     cx,
                 };
                 let body_id = cx.tcx.hir().body_owned_by(
-                    impl_item_refs
+                    cx.tcx.hir().local_def_id(
-                        .iter()
+                        impl_item_refs
-                        .find(|iiref| iiref.ident.as_str() == "get_lints")
+                            .iter()
-                        .expect("LintPass needs to implement get_lints")
+                            .find(|iiref| iiref.ident.as_str() == "get_lints")
-                        .id
+                            .expect("LintPass needs to implement get_lints")
-                        .hir_id(),
+                            .id
+                            .hir_id(),
+                    ),
                 );
                 collector.visit_expr(&cx.tcx.hir().body(body_id).value);
             }
@@ -569,7 +571,7 @@ fn check_invalid_clippy_version_attribute(cx: &LateContext<'_>, item: &'_ Item<'
                 item.span,
                 "this item has an invalid `clippy::version` attribute",
                 None,
-                "please use a valid sematic version, see `doc/adding_lints.md`",
+                "please use a valid semantic version, see `doc/adding_lints.md`",
             );
         }
     } else {

clippy_lints/src/utils/internal_lints/metadata_collector.rs

@@ -619,7 +619,7 @@ impl<'hir> LateLintPass<'hir> for MetadataCollector {
             if_chain! {
                 // item validation
                 if is_lint_ref_type(cx, ty);
-                // blacklist check
+                // disallow check
                 let lint_name = sym_to_string(item.ident.name).to_ascii_lowercase();
                 if !BLACK_LISTED_LINTS.contains(&lint_name.as_str());
                 // metadata extraction
@@ -644,7 +644,7 @@ impl<'hir> LateLintPass<'hir> for MetadataCollector {
 
             if_chain! {
                 if is_deprecated_lint(cx, ty);
-                // blacklist check
+                // disallow check
                 let lint_name = sym_to_string(item.ident.name).to_ascii_lowercase();
                 if !BLACK_LISTED_LINTS.contains(&lint_name.as_str());
                 // Metadata the little we can get from a deprecated lint

clippy_lints/src/verbose_file_reads.rs

@@ -61,10 +61,10 @@ impl<'tcx> LateLintPass<'tcx> for VerboseFileReads {
 
 fn is_file_read_to_end<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'tcx>) -> bool {
     if_chain! {
-        if let ExprKind::MethodCall(method_name, exprs, _) = expr.kind;
+        if let ExprKind::MethodCall(method_name, [recv, ..], _) = expr.kind;
         if method_name.ident.as_str() == "read_to_end";
-        if let ExprKind::Path(QPath::Resolved(None, _)) = &exprs[0].kind;
+        if let ExprKind::Path(QPath::Resolved(None, _)) = &recv.kind;
-        let ty = cx.typeck_results().expr_ty(&exprs[0]);
+        let ty = cx.typeck_results().expr_ty(recv);
         if match_type(cx, ty, &paths::FILE);
         then {
             return true

clippy_utils/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "clippy_utils"
-version = "0.1.64"
+version = "0.1.65"
 edition = "2021"
 publish = false
 

clippy_utils/src/check_proc_macro.rs

@@ -0,0 +1,329 @@
+//! This module handles checking if the span given is from a proc-macro or not.
+//!
+//! Proc-macros are capable of setting the span of every token they output to a few possible spans.
+//! This includes spans we can detect easily as coming from a proc-macro (e.g. the call site
+//! or the def site), and spans we can't easily detect as such (e.g. the span of any token
+//! passed into the proc macro). This capability means proc-macros are capable of generating code
+//! with a span that looks like it was written by the user, but which should not be linted by clippy
+//! as it was generated by an external macro.
+//!
+//! That brings us to this module. The current approach is to determine a small bit of text which
+//! must exist at both the start and the end of an item (e.g. an expression or a path) assuming the
+//! code was written, and check if the span contains that text. Note this will only work correctly
+//! if the span is not from a `macro_rules` based macro.
+
+use rustc_ast::ast::{IntTy, LitIntType, LitKind, StrStyle, UintTy};
+use rustc_hir::{
+    intravisit::FnKind, Block, BlockCheckMode, Body, Closure, Destination, Expr, ExprKind, FieldDef, FnHeader, HirId,
+    Impl, ImplItem, ImplItemKind, IsAuto, Item, ItemKind, LoopSource, MatchSource, Node, QPath, TraitItem,
+    TraitItemKind, UnOp, UnsafeSource, Unsafety, Variant, VariantData, YieldSource,
+};
+use rustc_lint::{LateContext, LintContext};
+use rustc_middle::ty::TyCtxt;
+use rustc_session::Session;
+use rustc_span::{Span, Symbol};
+use rustc_target::spec::abi::Abi;
+
+/// The search pattern to look for. Used by `span_matches_pat`
+#[derive(Clone, Copy)]
+pub enum Pat {
+    /// A single string.
+    Str(&'static str),
+    /// Any of the given strings.
+    MultiStr(&'static [&'static str]),
+    /// The string representation of the symbol.
+    Sym(Symbol),
+    /// Any decimal or hexadecimal digit depending on the location.
+    Num,
+}
+
+/// Checks if the start and the end of the span's text matches the patterns. This will return false
+/// if the span crosses multiple files or if source is not available.
+fn span_matches_pat(sess: &Session, span: Span, start_pat: Pat, end_pat: Pat) -> bool {
+    let pos = sess.source_map().lookup_byte_offset(span.lo());
+    let Some(ref src) = pos.sf.src else {
+        return false;
+    };
+    let end = span.hi() - pos.sf.start_pos;
+    src.get(pos.pos.0 as usize..end.0 as usize).map_or(false, |s| {
+        // Spans can be wrapped in a mixture or parenthesis, whitespace, and trailing commas.
+        let start_str = s.trim_start_matches(|c: char| c.is_whitespace() || c == '(');
+        let end_str = s.trim_end_matches(|c: char| c.is_whitespace() || c == ')' || c == ',');
+        (match start_pat {
+            Pat::Str(text) => start_str.starts_with(text),
+            Pat::MultiStr(texts) => texts.iter().any(|s| start_str.starts_with(s)),
+            Pat::Sym(sym) => start_str.starts_with(sym.as_str()),
+            Pat::Num => start_str.as_bytes().first().map_or(false, u8::is_ascii_digit),
+        } && match end_pat {
+            Pat::Str(text) => end_str.ends_with(text),
+            Pat::MultiStr(texts) => texts.iter().any(|s| start_str.ends_with(s)),
+            Pat::Sym(sym) => end_str.ends_with(sym.as_str()),
+            Pat::Num => end_str.as_bytes().last().map_or(false, u8::is_ascii_hexdigit),
+        })
+    })
+}
+
+/// Get the search patterns to use for the given literal
+fn lit_search_pat(lit: &LitKind) -> (Pat, Pat) {
+    match lit {
+        LitKind::Str(_, StrStyle::Cooked) => (Pat::Str("\""), Pat::Str("\"")),
+        LitKind::Str(_, StrStyle::Raw(0)) => (Pat::Str("r"), Pat::Str("\"")),
+        LitKind::Str(_, StrStyle::Raw(_)) => (Pat::Str("r#"), Pat::Str("#")),
+        LitKind::ByteStr(_) => (Pat::Str("b\""), Pat::Str("\"")),
+        LitKind::Byte(_) => (Pat::Str("b'"), Pat::Str("'")),
+        LitKind::Char(_) => (Pat::Str("'"), Pat::Str("'")),
+        LitKind::Int(_, LitIntType::Signed(IntTy::Isize)) => (Pat::Num, Pat::Str("isize")),
+        LitKind::Int(_, LitIntType::Unsigned(UintTy::Usize)) => (Pat::Num, Pat::Str("usize")),
+        LitKind::Int(..) => (Pat::Num, Pat::Num),
+        LitKind::Float(..) => (Pat::Num, Pat::Str("")),
+        LitKind::Bool(true) => (Pat::Str("true"), Pat::Str("true")),
+        LitKind::Bool(false) => (Pat::Str("false"), Pat::Str("false")),
+        _ => (Pat::Str(""), Pat::Str("")),
+    }
+}
+
+/// Get the search patterns to use for the given path
+fn qpath_search_pat(path: &QPath<'_>) -> (Pat, Pat) {
+    match path {
+        QPath::Resolved(ty, path) => {
+            let start = if ty.is_some() {
+                Pat::Str("<")
+            } else {
+                path.segments
+                    .first()
+                    .map_or(Pat::Str(""), |seg| Pat::Sym(seg.ident.name))
+            };
+            let end = path.segments.last().map_or(Pat::Str(""), |seg| {
+                if seg.args.is_some() {
+                    Pat::Str(">")
+                } else {
+                    Pat::Sym(seg.ident.name)
+                }
+            });
+            (start, end)
+        },
+        QPath::TypeRelative(_, name) => (Pat::Str(""), Pat::Sym(name.ident.name)),
+        QPath::LangItem(..) => (Pat::Str(""), Pat::Str("")),
+    }
+}
+
+/// Get the search patterns to use for the given expression
+fn expr_search_pat(tcx: TyCtxt<'_>, e: &Expr<'_>) -> (Pat, Pat) {
+    match e.kind {
+        ExprKind::Box(e) => (Pat::Str("box"), expr_search_pat(tcx, e).1),
+        ExprKind::ConstBlock(_) => (Pat::Str("const"), Pat::Str("}")),
+        ExprKind::Tup([]) => (Pat::Str(")"), Pat::Str("(")),
+        ExprKind::Unary(UnOp::Deref, e) => (Pat::Str("*"), expr_search_pat(tcx, e).1),
+        ExprKind::Unary(UnOp::Not, e) => (Pat::Str("!"), expr_search_pat(tcx, e).1),
+        ExprKind::Unary(UnOp::Neg, e) => (Pat::Str("-"), expr_search_pat(tcx, e).1),
+        ExprKind::Lit(ref lit) => lit_search_pat(&lit.node),
+        ExprKind::Array(_) | ExprKind::Repeat(..) => (Pat::Str("["), Pat::Str("]")),
+        ExprKind::Call(e, []) | ExprKind::MethodCall(_, [e], _) => (expr_search_pat(tcx, e).0, Pat::Str("(")),
+        ExprKind::Call(first, [.., last])
+        | ExprKind::MethodCall(_, [first, .., last], _)
+        | ExprKind::Binary(_, first, last)
+        | ExprKind::Tup([first, .., last])
+        | ExprKind::Assign(first, last, _)
+        | ExprKind::AssignOp(_, first, last) => (expr_search_pat(tcx, first).0, expr_search_pat(tcx, last).1),
+        ExprKind::Tup([e]) | ExprKind::DropTemps(e) => expr_search_pat(tcx, e),
+        ExprKind::Cast(e, _) | ExprKind::Type(e, _) => (expr_search_pat(tcx, e).0, Pat::Str("")),
+        ExprKind::Let(let_expr) => (Pat::Str("let"), expr_search_pat(tcx, let_expr.init).1),
+        ExprKind::If(..) => (Pat::Str("if"), Pat::Str("}")),
+        ExprKind::Loop(_, Some(_), _, _) | ExprKind::Block(_, Some(_)) => (Pat::Str("'"), Pat::Str("}")),
+        ExprKind::Loop(_, None, LoopSource::Loop, _) => (Pat::Str("loop"), Pat::Str("}")),
+        ExprKind::Loop(_, None, LoopSource::While, _) => (Pat::Str("while"), Pat::Str("}")),
+        ExprKind::Loop(_, None, LoopSource::ForLoop, _) | ExprKind::Match(_, _, MatchSource::ForLoopDesugar) => {
+            (Pat::Str("for"), Pat::Str("}"))
+        },
+        ExprKind::Match(_, _, MatchSource::Normal) => (Pat::Str("match"), Pat::Str("}")),
+        ExprKind::Match(e, _, MatchSource::TryDesugar) => (expr_search_pat(tcx, e).0, Pat::Str("?")),
+        ExprKind::Match(e, _, MatchSource::AwaitDesugar) | ExprKind::Yield(e, YieldSource::Await { .. }) => {
+            (expr_search_pat(tcx, e).0, Pat::Str("await"))
+        },
+        ExprKind::Closure(&Closure { body, .. }) => (Pat::Str(""), expr_search_pat(tcx, &tcx.hir().body(body).value).1),
+        ExprKind::Block(
+            Block {
+                rules: BlockCheckMode::UnsafeBlock(UnsafeSource::UserProvided),
+                ..
+            },
+            None,
+        ) => (Pat::Str("unsafe"), Pat::Str("}")),
+        ExprKind::Block(_, None) => (Pat::Str("{"), Pat::Str("}")),
+        ExprKind::Field(e, name) => (expr_search_pat(tcx, e).0, Pat::Sym(name.name)),
+        ExprKind::Index(e, _) => (expr_search_pat(tcx, e).0, Pat::Str("]")),
+        ExprKind::Path(ref path) => qpath_search_pat(path),
+        ExprKind::AddrOf(_, _, e) => (Pat::Str("&"), expr_search_pat(tcx, e).1),
+        ExprKind::Break(Destination { label: None, .. }, None) => (Pat::Str("break"), Pat::Str("break")),
+        ExprKind::Break(Destination { label: Some(name), .. }, None) => (Pat::Str("break"), Pat::Sym(name.ident.name)),
+        ExprKind::Break(_, Some(e)) => (Pat::Str("break"), expr_search_pat(tcx, e).1),
+        ExprKind::Continue(Destination { label: None, .. }) => (Pat::Str("continue"), Pat::Str("continue")),
+        ExprKind::Continue(Destination { label: Some(name), .. }) => (Pat::Str("continue"), Pat::Sym(name.ident.name)),
+        ExprKind::Ret(None) => (Pat::Str("return"), Pat::Str("return")),
+        ExprKind::Ret(Some(e)) => (Pat::Str("return"), expr_search_pat(tcx, e).1),
+        ExprKind::Struct(path, _, _) => (qpath_search_pat(path).0, Pat::Str("}")),
+        ExprKind::Yield(e, YieldSource::Yield) => (Pat::Str("yield"), expr_search_pat(tcx, e).1),
+        _ => (Pat::Str(""), Pat::Str("")),
+    }
+}
+
+fn fn_header_search_pat(header: FnHeader) -> Pat {
+    if header.is_async() {
+        Pat::Str("async")
+    } else if header.is_const() {
+        Pat::Str("const")
+    } else if header.is_unsafe() {
+        Pat::Str("unsafe")
+    } else if header.abi != Abi::Rust {
+        Pat::Str("extern")
+    } else {
+        Pat::MultiStr(&["fn", "extern"])
+    }
+}
+
+fn item_search_pat(item: &Item<'_>) -> (Pat, Pat) {
+    let (start_pat, end_pat) = match &item.kind {
+        ItemKind::ExternCrate(_) => (Pat::Str("extern"), Pat::Str(";")),
+        ItemKind::Static(..) => (Pat::Str("static"), Pat::Str(";")),
+        ItemKind::Const(..) => (Pat::Str("const"), Pat::Str(";")),
+        ItemKind::Fn(sig, ..) => (fn_header_search_pat(sig.header), Pat::Str("")),
+        ItemKind::ForeignMod { .. } => (Pat::Str("extern"), Pat::Str("}")),
+        ItemKind::TyAlias(..) | ItemKind::OpaqueTy(_) => (Pat::Str("type"), Pat::Str(";")),
+        ItemKind::Enum(..) => (Pat::Str("enum"), Pat::Str("}")),
+        ItemKind::Struct(VariantData::Struct(..), _) => (Pat::Str("struct"), Pat::Str("}")),
+        ItemKind::Struct(..) => (Pat::Str("struct"), Pat::Str(";")),
+        ItemKind::Union(..) => (Pat::Str("union"), Pat::Str("}")),
+        ItemKind::Trait(_, Unsafety::Unsafe, ..)
+        | ItemKind::Impl(Impl {
+            unsafety: Unsafety::Unsafe,
+            ..
+        }) => (Pat::Str("unsafe"), Pat::Str("}")),
+        ItemKind::Trait(IsAuto::Yes, ..) => (Pat::Str("auto"), Pat::Str("}")),
+        ItemKind::Trait(..) => (Pat::Str("trait"), Pat::Str("}")),
+        ItemKind::Impl(_) => (Pat::Str("impl"), Pat::Str("}")),
+        _ => return (Pat::Str(""), Pat::Str("")),
+    };
+    if item.vis_span.is_empty() {
+        (start_pat, end_pat)
+    } else {
+        (Pat::Str("pub"), end_pat)
+    }
+}
+
+fn trait_item_search_pat(item: &TraitItem<'_>) -> (Pat, Pat) {
+    match &item.kind {
+        TraitItemKind::Const(..) => (Pat::Str("const"), Pat::Str(";")),
+        TraitItemKind::Type(..) => (Pat::Str("type"), Pat::Str(";")),
+        TraitItemKind::Fn(sig, ..) => (fn_header_search_pat(sig.header), Pat::Str("")),
+    }
+}
+
+fn impl_item_search_pat(item: &ImplItem<'_>) -> (Pat, Pat) {
+    let (start_pat, end_pat) = match &item.kind {
+        ImplItemKind::Const(..) => (Pat::Str("const"), Pat::Str(";")),
+        ImplItemKind::TyAlias(..) => (Pat::Str("type"), Pat::Str(";")),
+        ImplItemKind::Fn(sig, ..) => (fn_header_search_pat(sig.header), Pat::Str("")),
+    };
+    if item.vis_span.is_empty() {
+        (start_pat, end_pat)
+    } else {
+        (Pat::Str("pub"), end_pat)
+    }
+}
+
+fn field_def_search_pat(def: &FieldDef<'_>) -> (Pat, Pat) {
+    if def.vis_span.is_empty() {
+        if def.is_positional() {
+            (Pat::Str(""), Pat::Str(""))
+        } else {
+            (Pat::Sym(def.ident.name), Pat::Str(""))
+        }
+    } else {
+        (Pat::Str("pub"), Pat::Str(""))
+    }
+}
+
+fn variant_search_pat(v: &Variant<'_>) -> (Pat, Pat) {
+    match v.data {
+        VariantData::Struct(..) => (Pat::Sym(v.ident.name), Pat::Str("}")),
+        VariantData::Tuple(..) => (Pat::Sym(v.ident.name), Pat::Str("")),
+        VariantData::Unit(..) => (Pat::Sym(v.ident.name), Pat::Sym(v.ident.name)),
+    }
+}
+
+fn fn_kind_pat(tcx: TyCtxt<'_>, kind: &FnKind<'_>, body: &Body<'_>, hir_id: HirId) -> (Pat, Pat) {
+    let (start_pat, end_pat) = match kind {
+        FnKind::ItemFn(.., header) => (fn_header_search_pat(*header), Pat::Str("")),
+        FnKind::Method(.., sig) => (fn_header_search_pat(sig.header), Pat::Str("")),
+        FnKind::Closure => return (Pat::Str(""), expr_search_pat(tcx, &body.value).1),
+    };
+    let start_pat = match tcx.hir().get(hir_id) {
+        Node::Item(Item { vis_span, .. }) | Node::ImplItem(ImplItem { vis_span, .. }) => {
+            if vis_span.is_empty() {
+                start_pat
+            } else {
+                Pat::Str("pub")
+            }
+        },
+        Node::TraitItem(_) => start_pat,
+        _ => Pat::Str(""),
+    };
+    (start_pat, end_pat)
+}
+
+pub trait WithSearchPat {
+    type Context: LintContext;
+    fn search_pat(&self, cx: &Self::Context) -> (Pat, Pat);
+    fn span(&self) -> Span;
+}
+macro_rules! impl_with_search_pat {
+    ($cx:ident: $ty:ident with $fn:ident $(($tcx:ident))?) => {
+        impl<'cx> WithSearchPat for $ty<'cx> {
+            type Context = $cx<'cx>;
+            #[allow(unused_variables)]
+            fn search_pat(&self, cx: &Self::Context) -> (Pat, Pat) {
+                $(let $tcx = cx.tcx;)?
+                $fn($($tcx,)? self)
+            }
+            fn span(&self) -> Span {
+                self.span
+            }
+        }
+    };
+}
+impl_with_search_pat!(LateContext: Expr with expr_search_pat(tcx));
+impl_with_search_pat!(LateContext: Item with item_search_pat);
+impl_with_search_pat!(LateContext: TraitItem with trait_item_search_pat);
+impl_with_search_pat!(LateContext: ImplItem with impl_item_search_pat);
+impl_with_search_pat!(LateContext: FieldDef with field_def_search_pat);
+impl_with_search_pat!(LateContext: Variant with variant_search_pat);
+
+impl<'cx> WithSearchPat for (&FnKind<'cx>, &Body<'cx>, HirId, Span) {
+    type Context = LateContext<'cx>;
+
+    fn search_pat(&self, cx: &Self::Context) -> (Pat, Pat) {
+        fn_kind_pat(cx.tcx, self.0, self.1, self.2)
+    }
+
+    fn span(&self) -> Span {
+        self.3
+    }
+}
+
+/// Checks if the item likely came from a proc-macro.
+///
+/// This should be called after `in_external_macro` and the initial pattern matching of the ast as
+/// it is significantly slower than both of those.
+pub fn is_from_proc_macro<T: WithSearchPat>(cx: &T::Context, item: &T) -> bool {
+    let (start_pat, end_pat) = item.search_pat(cx);
+    !span_matches_pat(cx.sess(), item.span(), start_pat, end_pat)
+}
+
+/// Checks if the span actually refers to a match expression
+pub fn is_span_match(cx: &impl LintContext, span: Span) -> bool {
+    span_matches_pat(cx.sess(), span, Pat::Str("match"), Pat::Str("}"))
+}
+
+/// Checks if the span actually refers to an if expression
+pub fn is_span_if(cx: &impl LintContext, span: Span) -> bool {
+    span_matches_pat(cx.sess(), span, Pat::Str("if"), Pat::Str("}"))
+}

clippy_utils/src/lib.rs

@@ -39,6 +39,7 @@ pub mod sym_helper;
 
 pub mod ast_utils;
 pub mod attrs;
+mod check_proc_macro;
 pub mod comparisons;
 pub mod consts;
 pub mod diagnostics;
@@ -59,6 +60,7 @@ pub mod usage;
 pub mod visitors;
 
 pub use self::attrs::*;
+pub use self::check_proc_macro::{is_from_proc_macro, is_span_if, is_span_match};
 pub use self::hir_utils::{
     both, count_eq, eq_expr_value, hash_expr, hash_stmt, over, HirEqInterExpr, SpanlessEq, SpanlessHash,
 };

clippy_utils/src/numeric_literal.rs

@@ -223,10 +223,12 @@ impl<'a> NumericLiteral<'a> {
 
 fn split_suffix<'a>(src: &'a str, lit_kind: &LitKind) -> (&'a str, Option<&'a str>) {
     debug_assert!(lit_kind.is_numeric());
-    lit_suffix_length(lit_kind).map_or((src, None), |suffix_length| {
+    lit_suffix_length(lit_kind)
-        let (unsuffixed, suffix) = src.split_at(src.len() - suffix_length);
+        .and_then(|suffix_length| src.len().checked_sub(suffix_length))
-        (unsuffixed, Some(suffix))
+        .map_or((src, None), |split_pos| {
-    })
+            let (unsuffixed, suffix) = src.split_at(split_pos);
+            (unsuffixed, Some(suffix))
+        })
 }
 
 fn lit_suffix_length(lit_kind: &LitKind) -> Option<usize> {

clippy_utils/src/paths.rs

@@ -194,3 +194,5 @@ pub const VEC_RESIZE: [&str; 4] = ["alloc", "vec", "Vec", "resize"];
 pub const WEAK_ARC: [&str; 3] = ["alloc", "sync", "Weak"];
 pub const WEAK_RC: [&str; 3] = ["alloc", "rc", "Weak"];
 pub const PTR_NON_NULL: [&str; 4] = ["core", "ptr", "non_null", "NonNull"];
+pub const INSTANT_NOW: [&str; 4] = ["std", "time", "Instant", "now"];
+pub const INSTANT: [&str; 3] = ["std", "time", "Instant"];

clippy_utils/src/source.rs

@@ -11,24 +11,6 @@ use rustc_span::source_map::SourceMap;
 use rustc_span::{BytePos, Pos, Span, SpanData, SyntaxContext};
 use std::borrow::Cow;
 
-/// Checks if the span starts with the given text. This will return false if the span crosses
-/// multiple files or if source is not available.
-///
-/// This is used to check for proc macros giving unhelpful spans to things.
-pub fn span_starts_with<T: LintContext>(cx: &T, span: Span, text: &str) -> bool {
-    fn helper(sm: &SourceMap, span: Span, text: &str) -> bool {
-        let pos = sm.lookup_byte_offset(span.lo());
-        let Some(ref src) = pos.sf.src else {
-            return false;
-        };
-        let end = span.hi() - pos.sf.start_pos;
-        src.get(pos.pos.0 as usize..end.0 as usize)
-            // Expression spans can include wrapping parenthesis. Remove them first.
-            .map_or(false, |s| s.trim_start_matches('(').starts_with(text))
-    }
-    helper(cx.sess().source_map(), span, text)
-}
-
 /// Like `snippet_block`, but add braces if the expr is not an `ExprKind::Block`.
 /// Also takes an `Option<String>` which can be put inside the braces.
 pub fn expr_block<'a, T: LintContext>(

clippy_utils/src/sugg.rs

@@ -315,6 +315,12 @@ impl<'a> Sugg<'a> {
         Sugg::NonParen(Cow::Owned(format!("{{ {} }}", self)))
     }
 
+    /// Convenience method to prefix the expression with the `async` keyword.
+    /// Can be used after `blockify` to create an async block.
+    pub fn asyncify(self) -> Sugg<'static> {
+        Sugg::NonParen(Cow::Owned(format!("async {}", self)))
+    }
+
     /// Convenience method to create the `<lhs>..<rhs>` or `<lhs>...<rhs>`
     /// suggestion.
     pub fn range(self, end: &Self, limit: ast::RangeLimits) -> Sugg<'static> {

clippy_utils/src/ty.rs

@@ -503,7 +503,7 @@ pub fn all_predicates_of(tcx: TyCtxt<'_>, id: DefId) -> impl Iterator<Item = &(P
 pub enum ExprFnSig<'tcx> {
     Sig(Binder<'tcx, FnSig<'tcx>>, Option<DefId>),
     Closure(Option<&'tcx FnDecl<'tcx>>, Binder<'tcx, FnSig<'tcx>>),
-    Trait(Binder<'tcx, Ty<'tcx>>, Option<Binder<'tcx, Ty<'tcx>>>),
+    Trait(Binder<'tcx, Ty<'tcx>>, Option<Binder<'tcx, Ty<'tcx>>>, Option<DefId>),
 }
 impl<'tcx> ExprFnSig<'tcx> {
     /// Gets the argument type at the given offset. This will return `None` when the index is out of
@@ -518,7 +518,7 @@ impl<'tcx> ExprFnSig<'tcx> {
                 }
             },
             Self::Closure(_, sig) => Some(sig.input(0).map_bound(|ty| ty.tuple_fields()[i])),
-            Self::Trait(inputs, _) => Some(inputs.map_bound(|ty| ty.tuple_fields()[i])),
+            Self::Trait(inputs, _, _) => Some(inputs.map_bound(|ty| ty.tuple_fields()[i])),
         }
     }
 
@@ -541,7 +541,7 @@ impl<'tcx> ExprFnSig<'tcx> {
                 decl.and_then(|decl| decl.inputs.get(i)),
                 sig.input(0).map_bound(|ty| ty.tuple_fields()[i]),
             )),
-            Self::Trait(inputs, _) => Some((None, inputs.map_bound(|ty| ty.tuple_fields()[i]))),
+            Self::Trait(inputs, _, _) => Some((None, inputs.map_bound(|ty| ty.tuple_fields()[i]))),
         }
     }
 
@@ -550,12 +550,16 @@ impl<'tcx> ExprFnSig<'tcx> {
     pub fn output(self) -> Option<Binder<'tcx, Ty<'tcx>>> {
         match self {
             Self::Sig(sig, _) | Self::Closure(_, sig) => Some(sig.output()),
-            Self::Trait(_, output) => output,
+            Self::Trait(_, output, _) => output,
         }
     }
 
     pub fn predicates_id(&self) -> Option<DefId> {
-        if let ExprFnSig::Sig(_, id) = *self { id } else { None }
+        if let ExprFnSig::Sig(_, id) | ExprFnSig::Trait(_, _, id) = *self {
+            id
+        } else {
+            None
+        }
     }
 }
 
@@ -568,7 +572,8 @@ pub fn expr_sig<'tcx>(cx: &LateContext<'tcx>, expr: &Expr<'_>) -> Option<ExprFnS
     }
 }
 
-fn ty_sig<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> Option<ExprFnSig<'tcx>> {
+/// If the type is function like, get the signature for it.
+pub fn ty_sig<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> Option<ExprFnSig<'tcx>> {
     if ty.is_box() {
         return ty_sig(cx, ty.boxed_ty());
     }
@@ -580,7 +585,7 @@ fn ty_sig<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> Option<ExprFnSig<'tcx>>
             Some(ExprFnSig::Closure(decl, subs.as_closure().sig()))
         },
         ty::FnDef(id, subs) => Some(ExprFnSig::Sig(cx.tcx.bound_fn_sig(id).subst(cx.tcx, subs), Some(id))),
-        ty::Opaque(id, _) => ty_sig(cx, cx.tcx.type_of(id)),
+        ty::Opaque(id, _) => sig_from_bounds(cx, ty, cx.tcx.item_bounds(id), cx.tcx.opt_parent(id)),
         ty::FnPtr(sig) => Some(ExprFnSig::Sig(sig, None)),
         ty::Dynamic(bounds, _) => {
             let lang_items = cx.tcx.lang_items();
@@ -594,26 +599,31 @@ fn ty_sig<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> Option<ExprFnSig<'tcx>>
                         .projection_bounds()
                         .find(|p| lang_items.fn_once_output().map_or(false, |id| id == p.item_def_id()))
                         .map(|p| p.map_bound(|p| p.term.ty().unwrap()));
-                    Some(ExprFnSig::Trait(bound.map_bound(|b| b.substs.type_at(0)), output))
+                    Some(ExprFnSig::Trait(bound.map_bound(|b| b.substs.type_at(0)), output, None))
                 },
                 _ => None,
             }
         },
         ty::Projection(proj) => match cx.tcx.try_normalize_erasing_regions(cx.param_env, ty) {
             Ok(normalized_ty) if normalized_ty != ty => ty_sig(cx, normalized_ty),
-            _ => sig_for_projection(cx, proj).or_else(|| sig_from_bounds(cx, ty)),
+            _ => sig_for_projection(cx, proj).or_else(|| sig_from_bounds(cx, ty, cx.param_env.caller_bounds(), None)),
         },
-        ty::Param(_) => sig_from_bounds(cx, ty),
+        ty::Param(_) => sig_from_bounds(cx, ty, cx.param_env.caller_bounds(), None),
         _ => None,
     }
 }
 
-fn sig_from_bounds<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> Option<ExprFnSig<'tcx>> {
+fn sig_from_bounds<'tcx>(
+    cx: &LateContext<'tcx>,
+    ty: Ty<'tcx>,
+    predicates: &'tcx [Predicate<'tcx>],
+    predicates_id: Option<DefId>,
+) -> Option<ExprFnSig<'tcx>> {
     let mut inputs = None;
     let mut output = None;
     let lang_items = cx.tcx.lang_items();
 
-    for (pred, _) in all_predicates_of(cx.tcx, cx.typeck_results().hir_owner.to_def_id()) {
+    for pred in predicates {
         match pred.kind().skip_binder() {
             PredicateKind::Trait(p)
                 if (lang_items.fn_trait() == Some(p.def_id())
@@ -621,11 +631,12 @@ fn sig_from_bounds<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> Option<ExprFnS
                     || lang_items.fn_once_trait() == Some(p.def_id()))
                     && p.self_ty() == ty =>
             {
-                if inputs.is_some() {
+                let i = pred.kind().rebind(p.trait_ref.substs.type_at(1));
+                if inputs.map_or(false, |inputs| i != inputs) {
                     // Multiple different fn trait impls. Is this even allowed?
                     return None;
                 }
-                inputs = Some(pred.kind().rebind(p.trait_ref.substs.type_at(1)));
+                inputs = Some(i);
             },
             PredicateKind::Projection(p)
                 if Some(p.projection_ty.item_def_id) == lang_items.fn_once_output()
@@ -641,7 +652,7 @@ fn sig_from_bounds<'tcx>(cx: &LateContext<'tcx>, ty: Ty<'tcx>) -> Option<ExprFnS
         }
     }
 
-    inputs.map(|ty| ExprFnSig::Trait(ty, output))
+    inputs.map(|ty| ExprFnSig::Trait(ty, output, predicates_id))
 }
 
 fn sig_for_projection<'tcx>(cx: &LateContext<'tcx>, ty: ProjectionTy<'tcx>) -> Option<ExprFnSig<'tcx>> {
@@ -661,14 +672,15 @@ fn sig_for_projection<'tcx>(cx: &LateContext<'tcx>, ty: ProjectionTy<'tcx>) -> O
                     || lang_items.fn_mut_trait() == Some(p.def_id())
                     || lang_items.fn_once_trait() == Some(p.def_id())) =>
             {
-                if inputs.is_some() {
+                let i = pred
+                    .map_bound(|pred| pred.kind().rebind(p.trait_ref.substs.type_at(1)))
+                    .subst(cx.tcx, ty.substs);
+
+                if inputs.map_or(false, |inputs| inputs != i) {
                     // Multiple different fn trait impls. Is this even allowed?
                     return None;
                 }
-                inputs = Some(
+                inputs = Some(i);
-                    pred.map_bound(|pred| pred.kind().rebind(p.trait_ref.substs.type_at(1)))
-                        .subst(cx.tcx, ty.substs),
-                );
             },
             PredicateKind::Projection(p) if Some(p.projection_ty.item_def_id) == lang_items.fn_once_output() => {
                 if output.is_some() {
@@ -684,7 +696,7 @@ fn sig_for_projection<'tcx>(cx: &LateContext<'tcx>, ty: ProjectionTy<'tcx>) -> O
         }
     }
 
-    inputs.map(|ty| ExprFnSig::Trait(ty, output))
+    inputs.map(|ty| ExprFnSig::Trait(ty, output, None))
 }
 
 #[derive(Clone, Copy)]

rust-toolchain

@@ -1,3 +1,3 @@
 [toolchain]
-channel = "nightly-2022-07-28"
+channel = "nightly-2022-08-11"
 components = ["cargo", "llvm-tools-preview", "rust-src", "rust-std", "rustc", "rustc-dev", "rustfmt"]

tests/ui-internal/check_clippy_version_attribute.stderr

@@ -16,7 +16,7 @@ note: the lint level is defined here
 LL | #![deny(clippy::internal)]
    |         ^^^^^^^^^^^^^^^^
    = note: `#[deny(clippy::invalid_clippy_version_attribute)]` implied by `#[deny(clippy::internal)]`
-   = help: please use a valid sematic version, see `doc/adding_lints.md`
+   = help: please use a valid semantic version, see `doc/adding_lints.md`
    = note: this error originates in the macro `$crate::declare_tool_lint` which comes from the expansion of the macro `declare_tool_lint` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: this item has an invalid `clippy::version` attribute
@@ -31,7 +31,7 @@ LL | |     report_in_external_macro: true
 LL | | }
    | |_^
    |
-   = help: please use a valid sematic version, see `doc/adding_lints.md`
+   = help: please use a valid semantic version, see `doc/adding_lints.md`
    = note: this error originates in the macro `$crate::declare_tool_lint` which comes from the expansion of the macro `declare_tool_lint` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: this lint is missing the `clippy::version` attribute or version value

tests/ui-toml/bad_toml_type/clippy.toml

@@ -1 +1 @@
-blacklisted-names = 42
+disallowed-names = 42

tests/ui-toml/bad_toml_type/conf_bad_type.stderr

@@ -1,4 +1,4 @@
-error: error reading Clippy's configuration file `$DIR/clippy.toml`: invalid type: integer `42`, expected a sequence for key `blacklisted-names`
+error: error reading Clippy's configuration file `$DIR/clippy.toml`: invalid type: integer `42`, expected a sequence for key `disallowed-names`
 
 error: aborting due to previous error
 

tests/ui-toml/blacklisted_names_append/blacklisted_names.stderr

@@ -1,16 +0,0 @@
-error: use of a blacklisted/placeholder name `foo`
-  --> $DIR/blacklisted_names.rs:5:9
-   |
-LL |     let foo = "bar";
-   |         ^^^
-   |
-   = note: `-D clippy::blacklisted-name` implied by `-D warnings`
-
-error: use of a blacklisted/placeholder name `ducks`
-  --> $DIR/blacklisted_names.rs:7:9
-   |
-LL |     let ducks = ["quack", "quack"];
-   |         ^^^^^
-
-error: aborting due to 2 previous errors
-

tests/ui-toml/blacklisted_names_append/clippy.toml

@@ -1 +0,0 @@
-blacklisted-names = ["ducks", ".."]

tests/ui-toml/blacklisted_names_replace/blacklisted_names.stderr

@@ -1,10 +0,0 @@
-error: use of a blacklisted/placeholder name `ducks`
-  --> $DIR/blacklisted_names.rs:7:9
-   |
-LL |     let ducks = ["quack", "quack"];
-   |         ^^^^^
-   |
-   = note: `-D clippy::blacklisted-name` implied by `-D warnings`
-
-error: aborting due to previous error
-

tests/ui-toml/blacklisted_names_replace/clippy.toml

@@ -1 +0,0 @@
-blacklisted-names = ["ducks"]

tests/ui-toml/conf_deprecated_key/clippy.toml

@@ -1,5 +1,6 @@
-# that one is an error
+# Expect errors from these deprecated configs
-cyclomatic-complexity-threshold = 42
+cyclomatic-complexity-threshold = 2
+blacklisted-names = [ "..", "wibble" ]
 
 # that one is white-listed
 [third-party]

tests/ui-toml/conf_deprecated_key/conf_deprecated_key.rs

@@ -1 +1,11 @@
 fn main() {}
+
+#[warn(clippy::cognitive_complexity)]
+fn cognitive_complexity() {
+    let x = vec![1, 2, 3];
+    for i in x {
+        if i == 1 {
+            println!("{}", i);
+        }
+    }
+}

tests/ui-toml/conf_deprecated_key/conf_deprecated_key.stderr

@@ -1,4 +1,15 @@
-error: error reading Clippy's configuration file `$DIR/clippy.toml`: deprecated field `cyclomatic-complexity-threshold`. Please use `cognitive-complexity-threshold` instead
+warning: error reading Clippy's configuration file `$DIR/clippy.toml`: deprecated field `cyclomatic-complexity-threshold`. Please use `cognitive-complexity-threshold` instead
 
-error: aborting due to previous error
+warning: error reading Clippy's configuration file `$DIR/clippy.toml`: deprecated field `blacklisted-names`. Please use `disallowed-names` instead
+
+error: the function has a cognitive complexity of (3/2)
+  --> $DIR/conf_deprecated_key.rs:4:4
+   |
+LL | fn cognitive_complexity() {
+   |    ^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: `-D clippy::cognitive-complexity` implied by `-D warnings`
+   = help: you could split it up into multiple smaller functions
+
+error: aborting due to previous error; 2 warnings emitted
 

tests/ui-toml/disallowed_names_append/clippy.toml

@@ -0,0 +1 @@
+disallowed-names = ["ducks", ".."]

tests/ui-toml/disallowed_names_append/disallowed_names.rs

@@ -1,9 +1,9 @@
-#[warn(clippy::blacklisted_name)]
+#[warn(clippy::disallowed_names)]
 
 fn main() {
     // `foo` is part of the default configuration
     let foo = "bar";
-    // `ducks` was unrightfully blacklisted
+    // `ducks` was unrightfully disallowed
     let ducks = ["quack", "quack"];
     // `fox` is okay
     let fox = ["what", "does", "the", "fox", "say", "?"];

tests/ui-toml/disallowed_names_append/disallowed_names.stderr

@@ -0,0 +1,16 @@
+error: use of a disallowed/placeholder name `foo`
+  --> $DIR/disallowed_names.rs:5:9
+   |
+LL |     let foo = "bar";
+   |         ^^^
+   |
+   = note: `-D clippy::disallowed-names` implied by `-D warnings`
+
+error: use of a disallowed/placeholder name `ducks`
+  --> $DIR/disallowed_names.rs:7:9
+   |
+LL |     let ducks = ["quack", "quack"];
+   |         ^^^^^
+
+error: aborting due to 2 previous errors
+

tests/ui-toml/disallowed_names_replace/clippy.toml

@@ -0,0 +1 @@
+disallowed-names = ["ducks"]

tests/ui-toml/disallowed_names_replace/disallowed_names.rs

@@ -1,9 +1,9 @@
-#[warn(clippy::blacklisted_name)]
+#[warn(clippy::disallowed_names)]
 
 fn main() {
     // `foo` is part of the default configuration
     let foo = "bar";
-    // `ducks` was unrightfully blacklisted
+    // `ducks` was unrightfully disallowed
     let ducks = ["quack", "quack"];
     // `fox` is okay
     let fox = ["what", "does", "the", "fox", "say", "?"];

tests/ui-toml/disallowed_names_replace/disallowed_names.stderr

@@ -0,0 +1,10 @@
+error: use of a disallowed/placeholder name `ducks`
+  --> $DIR/disallowed_names.rs:7:9
+   |
+LL |     let ducks = ["quack", "quack"];
+   |         ^^^^^
+   |
+   = note: `-D clippy::disallowed-names` implied by `-D warnings`
+
+error: aborting due to previous error
+

tests/ui-toml/duplicated_keys/clippy.toml

@@ -0,0 +1,5 @@
+cognitive-complexity-threshold = 2
+# This is the deprecated name for the same key
+cyclomatic-complexity-threshold = 3
+# Check we get duplication warning regardless of order
+cognitive-complexity-threshold = 4

tests/ui-toml/duplicated_keys/duplicated_keys.rs

@@ -0,0 +1 @@
+fn main() {}

tests/ui-toml/duplicated_keys/duplicated_keys.stderr

@@ -0,0 +1,8 @@
+error: error reading Clippy's configuration file `$DIR/clippy.toml`: duplicate field `cognitive_complexity_threshold` (provided as `cyclomatic_complexity_threshold`)
+
+error: error reading Clippy's configuration file `$DIR/clippy.toml`: duplicate field `cognitive-complexity-threshold`
+
+warning: error reading Clippy's configuration file `$DIR/clippy.toml`: deprecated field `cyclomatic-complexity-threshold`. Please use `cognitive-complexity-threshold` instead
+
+error: aborting due to 2 previous errors; 1 warning emitted
+

tests/ui-toml/expect_used/expect_used.stderr

@@ -5,7 +5,7 @@ LL |     let _ = opt.expect("");
    |             ^^^^^^^^^^^^^^
    |
    = note: `-D clippy::expect-used` implied by `-D warnings`
-   = help: if this value is an `None`, it will panic
+   = help: if this value is `None`, it will panic
 
 error: used `expect()` on `a Result` value
   --> $DIR/expect_used.rs:11:13

tests/ui-toml/toml_blacklist/clippy.toml

@@ -1 +0,0 @@
-blacklisted-names = ["toto", "tata", "titi"]

tests/ui-toml/toml_blacklist/conf_french_blacklisted_name.stderr

@@ -1,46 +0,0 @@
-error: use of a blacklisted/placeholder name `toto`
-  --> $DIR/conf_french_blacklisted_name.rs:6:9
-   |
-LL | fn test(toto: ()) {}
-   |         ^^^^
-   |
-   = note: `-D clippy::blacklisted-name` implied by `-D warnings`
-
-error: use of a blacklisted/placeholder name `toto`
-  --> $DIR/conf_french_blacklisted_name.rs:9:9
-   |
-LL |     let toto = 42;
-   |         ^^^^
-
-error: use of a blacklisted/placeholder name `tata`
-  --> $DIR/conf_french_blacklisted_name.rs:10:9
-   |
-LL |     let tata = 42;
-   |         ^^^^
-
-error: use of a blacklisted/placeholder name `titi`
-  --> $DIR/conf_french_blacklisted_name.rs:11:9
-   |
-LL |     let titi = 42;
-   |         ^^^^
-
-error: use of a blacklisted/placeholder name `toto`
-  --> $DIR/conf_french_blacklisted_name.rs:17:10
-   |
-LL |         (toto, Some(tata), titi @ Some(_)) => (),
-   |          ^^^^
-
-error: use of a blacklisted/placeholder name `tata`
-  --> $DIR/conf_french_blacklisted_name.rs:17:21
-   |
-LL |         (toto, Some(tata), titi @ Some(_)) => (),
-   |                     ^^^^
-
-error: use of a blacklisted/placeholder name `titi`
-  --> $DIR/conf_french_blacklisted_name.rs:17:28
-   |
-LL |         (toto, Some(tata), titi @ Some(_)) => (),
-   |                            ^^^^
-
-error: aborting due to 7 previous errors
-

tests/ui-toml/toml_disallow/clippy.toml

@@ -0,0 +1 @@
+disallowed-names = ["toto", "tata", "titi"]

tests/ui-toml/toml_disallow/conf_french_disallowed_name.rs

@@ -1,7 +1,7 @@
 #![allow(dead_code)]
 #![allow(clippy::single_match)]
 #![allow(unused_variables)]
-#![warn(clippy::blacklisted_name)]
+#![warn(clippy::disallowed_names)]
 
 fn test(toto: ()) {}
 

tests/ui-toml/toml_disallow/conf_french_disallowed_name.stderr

@@ -0,0 +1,46 @@
+error: use of a disallowed/placeholder name `toto`
+  --> $DIR/conf_french_disallowed_name.rs:6:9
+   |
+LL | fn test(toto: ()) {}
+   |         ^^^^
+   |
+   = note: `-D clippy::disallowed-names` implied by `-D warnings`
+
+error: use of a disallowed/placeholder name `toto`
+  --> $DIR/conf_french_disallowed_name.rs:9:9
+   |
+LL |     let toto = 42;
+   |         ^^^^
+
+error: use of a disallowed/placeholder name `tata`
+  --> $DIR/conf_french_disallowed_name.rs:10:9
+   |
+LL |     let tata = 42;
+   |         ^^^^
+
+error: use of a disallowed/placeholder name `titi`
+  --> $DIR/conf_french_disallowed_name.rs:11:9
+   |
+LL |     let titi = 42;
+   |         ^^^^
+
+error: use of a disallowed/placeholder name `toto`
+  --> $DIR/conf_french_disallowed_name.rs:17:10
+   |
+LL |         (toto, Some(tata), titi @ Some(_)) => (),
+   |          ^^^^
+
+error: use of a disallowed/placeholder name `tata`
+  --> $DIR/conf_french_disallowed_name.rs:17:21
+   |
+LL |         (toto, Some(tata), titi @ Some(_)) => (),
+   |                     ^^^^
+
+error: use of a disallowed/placeholder name `titi`
+  --> $DIR/conf_french_disallowed_name.rs:17:28
+   |
+LL |         (toto, Some(tata), titi @ Some(_)) => (),
+   |                            ^^^^
+
+error: aborting due to 7 previous errors
+

tests/ui-toml/toml_unknown_key/conf_unknown_key.stderr

@@ -12,6 +12,7 @@ error: error reading Clippy's configuration file `$DIR/clippy.toml`: unknown fie
            cognitive-complexity-threshold
            cyclomatic-complexity-threshold
            disallowed-methods
+           disallowed-names
            disallowed-types
            doc-valid-idents
            enable-raw-pointer-heuristic-for-send

tests/ui/assertions_on_result_states.fixed

@@ -27,6 +27,14 @@ fn main() {
     let r: Result<Foo, Foo> = Ok(Foo);
     assert!(r.is_ok());
 
+    // test ok with some messages
+    let r: Result<Foo, DebugFoo> = Ok(Foo);
+    assert!(r.is_ok(), "oops");
+
+    // test ok with unit error
+    let r: Result<Foo, ()> = Ok(Foo);
+    assert!(r.is_ok());
+
     // test temporary ok
     fn get_ok() -> Result<Foo, DebugFoo> {
         Ok(Foo)

tests/ui/assertions_on_result_states.rs

@@ -27,6 +27,14 @@ fn main() {
     let r: Result<Foo, Foo> = Ok(Foo);
     assert!(r.is_ok());
 
+    // test ok with some messages
+    let r: Result<Foo, DebugFoo> = Ok(Foo);
+    assert!(r.is_ok(), "oops");
+
+    // test ok with unit error
+    let r: Result<Foo, ()> = Ok(Foo);
+    assert!(r.is_ok());
+
     // test temporary ok
     fn get_ok() -> Result<Foo, DebugFoo> {
         Ok(Foo)

tests/ui/assertions_on_result_states.stderr

@@ -7,31 +7,31 @@ LL |     assert!(r.is_ok());
    = note: `-D clippy::assertions-on-result-states` implied by `-D warnings`
 
 error: called `assert!` with `Result::is_ok`
-  --> $DIR/assertions_on_result_states.rs:34:5
+  --> $DIR/assertions_on_result_states.rs:42:5
    |
 LL |     assert!(get_ok().is_ok());
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `get_ok().unwrap()`
 
 error: called `assert!` with `Result::is_ok`
-  --> $DIR/assertions_on_result_states.rs:37:5
+  --> $DIR/assertions_on_result_states.rs:45:5
    |
 LL |     assert!(get_ok_macro!().is_ok());
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `get_ok_macro!().unwrap()`
 
 error: called `assert!` with `Result::is_ok`
-  --> $DIR/assertions_on_result_states.rs:50:5
+  --> $DIR/assertions_on_result_states.rs:58:5
    |
 LL |     assert!(r.is_ok());
    |     ^^^^^^^^^^^^^^^^^^ help: replace with: `r.unwrap()`
 
 error: called `assert!` with `Result::is_ok`
-  --> $DIR/assertions_on_result_states.rs:56:9
+  --> $DIR/assertions_on_result_states.rs:64:9
    |
 LL |         assert!(r.is_ok());
    |         ^^^^^^^^^^^^^^^^^^ help: replace with: `r.unwrap()`
 
 error: called `assert!` with `Result::is_err`
-  --> $DIR/assertions_on_result_states.rs:64:5
+  --> $DIR/assertions_on_result_states.rs:72:5
    |
 LL |     assert!(r.is_err());
    |     ^^^^^^^^^^^^^^^^^^^ help: replace with: `r.unwrap_err()`

tests/ui/blacklisted_name.stderr

@@ -1,88 +0,0 @@
-error: use of a blacklisted/placeholder name `foo`
-  --> $DIR/blacklisted_name.rs:11:9
-   |
-LL | fn test(foo: ()) {}
-   |         ^^^
-   |
-   = note: `-D clippy::blacklisted-name` implied by `-D warnings`
-
-error: use of a blacklisted/placeholder name `foo`
-  --> $DIR/blacklisted_name.rs:14:9
-   |
-LL |     let foo = 42;
-   |         ^^^
-
-error: use of a blacklisted/placeholder name `baz`
-  --> $DIR/blacklisted_name.rs:15:9
-   |
-LL |     let baz = 42;
-   |         ^^^
-
-error: use of a blacklisted/placeholder name `quux`
-  --> $DIR/blacklisted_name.rs:16:9
-   |
-LL |     let quux = 42;
-   |         ^^^^
-
-error: use of a blacklisted/placeholder name `foo`
-  --> $DIR/blacklisted_name.rs:27:10
-   |
-LL |         (foo, Some(baz), quux @ Some(_)) => (),
-   |          ^^^
-
-error: use of a blacklisted/placeholder name `baz`
-  --> $DIR/blacklisted_name.rs:27:20
-   |
-LL |         (foo, Some(baz), quux @ Some(_)) => (),
-   |                    ^^^
-
-error: use of a blacklisted/placeholder name `quux`
-  --> $DIR/blacklisted_name.rs:27:26
-   |
-LL |         (foo, Some(baz), quux @ Some(_)) => (),
-   |                          ^^^^
-
-error: use of a blacklisted/placeholder name `foo`
-  --> $DIR/blacklisted_name.rs:32:19
-   |
-LL | fn issue_1647(mut foo: u8) {
-   |                   ^^^
-
-error: use of a blacklisted/placeholder name `baz`
-  --> $DIR/blacklisted_name.rs:33:13
-   |
-LL |     let mut baz = 0;
-   |             ^^^
-
-error: use of a blacklisted/placeholder name `quux`
-  --> $DIR/blacklisted_name.rs:34:21
-   |
-LL |     if let Some(mut quux) = Some(42) {}
-   |                     ^^^^
-
-error: use of a blacklisted/placeholder name `baz`
-  --> $DIR/blacklisted_name.rs:38:13
-   |
-LL |     let ref baz = 0;
-   |             ^^^
-
-error: use of a blacklisted/placeholder name `quux`
-  --> $DIR/blacklisted_name.rs:39:21
-   |
-LL |     if let Some(ref quux) = Some(42) {}
-   |                     ^^^^
-
-error: use of a blacklisted/placeholder name `baz`
-  --> $DIR/blacklisted_name.rs:43:17
-   |
-LL |     let ref mut baz = 0;
-   |                 ^^^
-
-error: use of a blacklisted/placeholder name `quux`
-  --> $DIR/blacklisted_name.rs:44:25
-   |
-LL |     if let Some(ref mut quux) = Some(42) {}
-   |                         ^^^^
-
-error: aborting due to 14 previous errors
-

tests/ui/borrow_box.rs

@@ -1,5 +1,5 @@
 #![deny(clippy::borrowed_box)]
-#![allow(clippy::blacklisted_name)]
+#![allow(clippy::disallowed_names)]
 #![allow(unused_variables)]
 #![allow(dead_code)]
 

tests/ui/box_collection.rs

@@ -2,7 +2,7 @@
 #![allow(
     clippy::boxed_local,
     clippy::needless_pass_by_value,
-    clippy::blacklisted_name,
+    clippy::disallowed_names,
     unused
 )]
 

tests/ui/cast_abs_to_unsigned.fixed

@@ -26,4 +26,6 @@ fn main() {
     let _ = a.unsigned_abs() as u32;
     let _ = a.unsigned_abs() as u64;
     let _ = a.unsigned_abs() as u128;
+
+    let _ = (x as i64 - y as i64).unsigned_abs() as u32;
 }