Rename incorrect_impls to manual_impls, move them to warn by default

CHANGELOG.md

@@ -5065,6 +5065,7 @@ Released 2018-09-13
 [`manual_async_fn`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_async_fn
 [`manual_bits`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_bits
 [`manual_clamp`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_clamp
+[`manual_clone_impl_on_copy_type`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_clone_impl_on_copy_type
 [`manual_filter`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_filter
 [`manual_filter_map`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_filter_map
 [`manual_find`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_find
@@ -5081,6 +5082,7 @@ Released 2018-09-13
 [`manual_next_back`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_next_back
 [`manual_non_exhaustive`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_non_exhaustive
 [`manual_ok_or`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_ok_or
+[`manual_partial_ord_impl_on_ord_type`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_partial_ord_impl_on_ord_type
 [`manual_range_contains`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_range_contains
 [`manual_range_patterns`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_range_patterns
 [`manual_rem_euclid`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_rem_euclid

clippy_lints/src/declared_lints.rs

@@ -209,8 +209,6 @@ pub(crate) static LINTS: &[&crate::LintInfo] = &[
     crate::implicit_saturating_add::IMPLICIT_SATURATING_ADD_INFO,
     crate::implicit_saturating_sub::IMPLICIT_SATURATING_SUB_INFO,
     crate::inconsistent_struct_constructor::INCONSISTENT_STRUCT_CONSTRUCTOR_INFO,
-    crate::incorrect_impls::INCORRECT_CLONE_IMPL_ON_COPY_TYPE_INFO,
-    crate::incorrect_impls::INCORRECT_PARTIAL_ORD_IMPL_ON_ORD_TYPE_INFO,
     crate::index_refutable_slice::INDEX_REFUTABLE_SLICE_INFO,
     crate::indexing_slicing::INDEXING_SLICING_INFO,
     crate::indexing_slicing::OUT_OF_BOUNDS_INDEXING_INFO,
@@ -279,6 +277,8 @@ pub(crate) static LINTS: &[&crate::LintInfo] = &[
     crate::manual_clamp::MANUAL_CLAMP_INFO,
     crate::manual_float_methods::MANUAL_IS_FINITE_INFO,
     crate::manual_float_methods::MANUAL_IS_INFINITE_INFO,
+    crate::manual_impls::MANUAL_CLONE_IMPL_ON_COPY_TYPE_INFO,
+    crate::manual_impls::MANUAL_PARTIAL_ORD_IMPL_ON_ORD_TYPE_INFO,
     crate::manual_is_ascii_check::MANUAL_IS_ASCII_CHECK_INFO,
     crate::manual_let_else::MANUAL_LET_ELSE_INFO,
     crate::manual_main_separator_str::MANUAL_MAIN_SEPARATOR_STR_INFO,

clippy_lints/src/lib.rs

@@ -153,7 +153,6 @@ mod implicit_return;
 mod implicit_saturating_add;
 mod implicit_saturating_sub;
 mod inconsistent_struct_constructor;
-mod incorrect_impls;
 mod index_refutable_slice;
 mod indexing_slicing;
 mod infinite_iter;
@@ -188,6 +187,7 @@ mod manual_async_fn;
 mod manual_bits;
 mod manual_clamp;
 mod manual_float_methods;
+mod manual_impls;
 mod manual_is_ascii_check;
 mod manual_let_else;
 mod manual_main_separator_str;
@@ -1066,7 +1066,7 @@ pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf:
             avoid_breaking_exported_api,
         ))
     });
-    store.register_late_pass(|_| Box::new(incorrect_impls::IncorrectImpls));
+    store.register_late_pass(|_| Box::new(manual_impls::ManualImpls));
     store.register_late_pass(move |_| {
         Box::new(single_call_fn::SingleCallFn {
             avoid_breaking_exported_api,

clippy_lints/src/incorrect_impls.rs → clippy_lints/src/manual_impls.rs

@@ -17,8 +17,9 @@ declare_clippy_lint! {
     /// Checks for manual implementations of `Clone` when `Copy` is already implemented.
     ///
     /// ### Why is this bad?
-    /// If both `Clone` and `Copy` are implemented, they must agree. This is done by dereferencing
-    /// `self` in `Clone`'s implementation. Anything else is incorrect.
+    /// If both `Clone` and `Copy` are implemented, they must agree. This can done by dereferencing
+    /// `self` in `Clone`'s implementation, which will avoid any possibility of the implementations
+    /// becoming out of sync.
     ///
     /// ### Example
     /// ```rust,ignore
@@ -47,8 +48,8 @@ declare_clippy_lint! {
     /// impl Copy for A {}
     /// ```
     #[clippy::version = "1.72.0"]
-    pub INCORRECT_CLONE_IMPL_ON_COPY_TYPE,
-    correctness,
+    pub MANUAL_CLONE_IMPL_ON_COPY_TYPE,
+    complexity,
     "manual implementation of `Clone` on a `Copy` type"
 }
 declare_clippy_lint! {
@@ -62,11 +63,8 @@ declare_clippy_lint! {
     /// introduce an error upon refactoring.
     ///
     /// ### Known issues
-    /// Code that calls the `.into()` method instead will be flagged as incorrect, despite `.into()`
-    /// wrapping it in `Some`.
-    ///
-    /// ### Limitations
-    /// Will not lint if `Self` and `Rhs` do not have the same type.
+    /// Code that calls the `.into()` method instead will be flagged, despite `.into()` wrapping it
+    /// in `Some`.
     ///
     /// ### Example
     /// ```rust
@@ -108,13 +106,13 @@ declare_clippy_lint! {
     /// }
     /// ```
     #[clippy::version = "1.72.0"]
-    pub INCORRECT_PARTIAL_ORD_IMPL_ON_ORD_TYPE,
-    correctness,
+    pub MANUAL_PARTIAL_ORD_IMPL_ON_ORD_TYPE,
+    complexity,
     "manual implementation of `PartialOrd` when `Ord` is already implemented"
 }
-declare_lint_pass!(IncorrectImpls => [INCORRECT_CLONE_IMPL_ON_COPY_TYPE, INCORRECT_PARTIAL_ORD_IMPL_ON_ORD_TYPE]);
+declare_lint_pass!(ManualImpls => [MANUAL_CLONE_IMPL_ON_COPY_TYPE, MANUAL_PARTIAL_ORD_IMPL_ON_ORD_TYPE]);
 
-impl LateLintPass<'_> for IncorrectImpls {
+impl LateLintPass<'_> for ManualImpls {
     #[expect(clippy::too_many_lines)]
     fn check_impl_item(&mut self, cx: &LateContext<'_>, impl_item: &ImplItem<'_>) {
         let Some(Node::Item(item)) = get_parent_node(cx.tcx, impl_item.hir_id()) else {
@@ -152,27 +150,31 @@ impl LateLintPass<'_> for IncorrectImpls {
                     && let ExprKind::Unary(UnOp::Deref, deref) = expr.kind
                     && let ExprKind::Path(qpath) = deref.kind
                     && last_path_segment(&qpath).ident.name == kw::SelfLower
-                {} else {
-                    span_lint_and_sugg(
-                        cx,
-                        INCORRECT_CLONE_IMPL_ON_COPY_TYPE,
-                        block.span,
-                        "incorrect implementation of `clone` on a `Copy` type",
-                        "change this to",
-                        "{ *self }".to_owned(),
-                        Applicability::MaybeIncorrect,
-                    );
-
-                    return;
+                {
+                    // body is already `*self`
+                    return
                 }
+
+                span_lint_and_then(
+                    cx,
+                    MANUAL_CLONE_IMPL_ON_COPY_TYPE,
+                    block.span,
+                    "manual implementation of `clone` on a `Copy` type",
+                    |diag| {
+                        diag.span_suggestion(block.span, "change this to", "{ *self }", Applicability::MaybeIncorrect);
+                        diag.note("this ensures the requirement that `Copy` and `Clone` are consistent is satisfied");
+                    }
+                );
+
+                return;
             }
 
             if impl_item.ident.name == sym::clone_from {
                 span_lint_and_sugg(
                     cx,
-                    INCORRECT_CLONE_IMPL_ON_COPY_TYPE,
+                    MANUAL_CLONE_IMPL_ON_COPY_TYPE,
                     impl_item.span,
-                    "incorrect implementation of `clone_from` on a `Copy` type",
+                    "unneeded implementation of `clone_from` on a `Copy` type",
                     "remove it",
                     String::new(),
                     Applicability::MaybeIncorrect,
@@ -218,9 +220,9 @@ impl LateLintPass<'_> for IncorrectImpls {
 
                 span_lint_and_then(
                     cx,
-                    INCORRECT_PARTIAL_ORD_IMPL_ON_ORD_TYPE,
+                    MANUAL_PARTIAL_ORD_IMPL_ON_ORD_TYPE,
                     item.span,
-                    "incorrect implementation of `partial_cmp` on an `Ord` type",
+                    "manual implementation of `partial_cmp` on an `Ord` type",
                     |diag| {
                         let [_, other] = body.params else {
                             return;
@@ -255,6 +257,7 @@ impl LateLintPass<'_> for IncorrectImpls {
                             suggs,
                             Applicability::Unspecified,
                         );
+                        diag.note("this ensures the requirement that `Ord` and `PartialOrd` are consistent is satisfied");
                     }
                 );
             }

clippy_lints/src/renamed_lints.rs

@@ -15,6 +15,8 @@ pub static RENAMED_LINTS: &[(&str, &str)] = &[
     ("clippy::eval_order_dependence", "clippy::mixed_read_write_in_expression"),
     ("clippy::identity_conversion", "clippy::useless_conversion"),
     ("clippy::if_let_some_result", "clippy::match_result_ok"),
+    ("clippy::incorrect_clone_impl_on_copy_type", "clippy::manual_clone_impl_on_copy_type"),
+    ("clippy::incorrect_partial_ord_impl_on_ord_type", "clippy::manual_partial_ord_impl_on_ord_type"),
     ("clippy::integer_arithmetic", "clippy::arithmetic_side_effects"),
     ("clippy::logic_bug", "clippy::overly_complex_bool_expr"),
     ("clippy::new_without_default_derive", "clippy::new_without_default"),
@@ -38,12 +40,12 @@ pub static RENAMED_LINTS: &[(&str, &str)] = &[
     ("clippy::drop_bounds", "drop_bounds"),
     ("clippy::drop_copy", "dropping_copy_types"),
     ("clippy::drop_ref", "dropping_references"),
+    ("clippy::fn_null_check", "useless_ptr_null_checks"),
     ("clippy::for_loop_over_option", "for_loops_over_fallibles"),
     ("clippy::for_loop_over_result", "for_loops_over_fallibles"),
     ("clippy::for_loops_over_fallibles", "for_loops_over_fallibles"),
     ("clippy::forget_copy", "forgetting_copy_types"),
     ("clippy::forget_ref", "forgetting_references"),
-    ("clippy::fn_null_check", "useless_ptr_null_checks"),
     ("clippy::into_iter_on_array", "array_into_iter"),
     ("clippy::invalid_atomic_ordering", "invalid_atomic_ordering"),
     ("clippy::invalid_ref", "invalid_value"),

tests/ui/bool_comparison.fixed

@@ -1,6 +1,6 @@
 #![allow(clippy::needless_if)]
 #![warn(clippy::bool_comparison)]
-#![allow(clippy::incorrect_partial_ord_impl_on_ord_type)]
+#![allow(clippy::manual_partial_ord_impl_on_ord_type)]
 
 fn main() {
     let x = true;

tests/ui/bool_comparison.rs

@@ -1,6 +1,6 @@
 #![allow(clippy::needless_if)]
 #![warn(clippy::bool_comparison)]
-#![allow(clippy::incorrect_partial_ord_impl_on_ord_type)]
+#![allow(clippy::manual_partial_ord_impl_on_ord_type)]
 
 fn main() {
     let x = true;

tests/ui/clone_on_copy_impl.rs

@@ -1,4 +1,4 @@
-#![allow(clippy::incorrect_clone_impl_on_copy_type)]
+#![allow(clippy::manual_clone_impl_on_copy_type)]
 
 use std::fmt;
 use std::marker::PhantomData;

tests/ui/derive.rs

@@ -1,6 +1,6 @@
 #![allow(
-    clippy::incorrect_clone_impl_on_copy_type,
-    clippy::incorrect_partial_ord_impl_on_ord_type,
+    clippy::manual_clone_impl_on_copy_type,
+    clippy::manual_partial_ord_impl_on_ord_type,
     dead_code
 )]
 #![warn(clippy::expl_impl_clone_on_copy)]

tests/ui/derive_ord_xor_partial_ord.rs

@@ -1,6 +1,6 @@
 #![warn(clippy::derive_ord_xor_partial_ord)]
 #![allow(clippy::unnecessary_wraps)]
-#![allow(clippy::incorrect_partial_ord_impl_on_ord_type)]
+#![allow(clippy::manual_partial_ord_impl_on_ord_type)]
 
 use std::cmp::Ordering;
 

tests/ui/incorrect_partial_ord_impl_on_ord_type_fully_qual.stderr

@@ -1,4 +1,4 @@
-error: incorrect implementation of `partial_cmp` on an `Ord` type
+error: manual implementation of `partial_cmp` on an `Ord` type
   --> $DIR/incorrect_partial_ord_impl_on_ord_type_fully_qual.rs:23:1
    |
 LL | /  impl PartialOrd for A {
@@ -12,9 +12,9 @@ LL | ||     }
 LL | |  }
    | |__^
    |
-   = note: `#[deny(clippy::incorrect_partial_ord_impl_on_ord_type)]` on by default
+   = note: `-D clippy::manual-partial-ord-impl-on-ord-type` implied by `-D warnings`
 
-error: incorrect implementation of `partial_cmp` on an `Ord` type
+error: manual implementation of `partial_cmp` on an `Ord` type
   --> $DIR/incorrect_partial_ord_impl_on_ord_type_fully_qual.rs:46:1
    |
 LL | /  impl PartialOrd for B {

tests/ui/incorrect_clone_impl_on_copy_type.stderr → tests/ui/manual_clone_impl_on_copy_type.stderr

@@ -1,34 +1,37 @@
-error: incorrect implementation of `clone` on a `Copy` type
-  --> $DIR/incorrect_clone_impl_on_copy_type.rs:9:29
+error: manual implementation of `clone` on a `Copy` type
+  --> $DIR/manual_clone_impl_on_copy_type.rs:9:29
    |
 LL |       fn clone(&self) -> Self {
    |  _____________________________^
 LL | |         Self(self.0)
 LL | |     }
    | |_____^ help: change this to: `{ *self }`
    |
-   = note: `#[deny(clippy::incorrect_clone_impl_on_copy_type)]` on by default
+   = note: this ensures the requirement that `Copy` and `Clone` are consistent is satisfied
+   = note: `-D clippy::manual-clone-impl-on-copy-type` implied by `-D warnings`
 
-error: incorrect implementation of `clone_from` on a `Copy` type
-  --> $DIR/incorrect_clone_impl_on_copy_type.rs:13:5
+error: unneeded implementation of `clone_from` on a `Copy` type
+  --> $DIR/manual_clone_impl_on_copy_type.rs:13:5
    |
 LL | /     fn clone_from(&mut self, source: &Self) {
 LL | |         source.clone();
 LL | |         *self = source.clone();
 LL | |     }
    | |_____^ help: remove it
 
-error: incorrect implementation of `clone` on a `Copy` type
-  --> $DIR/incorrect_clone_impl_on_copy_type.rs:80:29
+error: manual implementation of `clone` on a `Copy` type
+  --> $DIR/manual_clone_impl_on_copy_type.rs:80:29
    |
 LL |       fn clone(&self) -> Self {
    |  _____________________________^
 LL | |         Self(self.0)
 LL | |     }
    | |_____^ help: change this to: `{ *self }`
+   |
+   = note: this ensures the requirement that `Copy` and `Clone` are consistent is satisfied
 
-error: incorrect implementation of `clone_from` on a `Copy` type
-  --> $DIR/incorrect_clone_impl_on_copy_type.rs:84:5
+error: unneeded implementation of `clone_from` on a `Copy` type
+  --> $DIR/manual_clone_impl_on_copy_type.rs:84:5
    |
 LL | /     fn clone_from(&mut self, source: &Self) {
 LL | |         source.clone();

tests/ui/incorrect_partial_ord_impl_on_ord_type.stderr → tests/ui/manual_partial_ord_impl_on_ord_type.stderr

@@ -1,5 +1,5 @@
-error: incorrect implementation of `partial_cmp` on an `Ord` type
-  --> $DIR/incorrect_partial_ord_impl_on_ord_type.rs:16:1
+error: manual implementation of `partial_cmp` on an `Ord` type
+  --> $DIR/manual_partial_ord_impl_on_ord_type.rs:16:1
    |
 LL | /  impl PartialOrd for A {
 LL | |      fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
@@ -10,10 +10,11 @@ LL | ||     }
 LL | |  }
    | |__^
    |
-   = note: `#[deny(clippy::incorrect_partial_ord_impl_on_ord_type)]` on by default
+   = note: this ensures the requirement that `Ord` and `PartialOrd` are consistent is satisfied
+   = note: `-D clippy::manual-partial-ord-impl-on-ord-type` implied by `-D warnings`
 
-error: incorrect implementation of `partial_cmp` on an `Ord` type
-  --> $DIR/incorrect_partial_ord_impl_on_ord_type.rs:50:1
+error: manual implementation of `partial_cmp` on an `Ord` type
+  --> $DIR/manual_partial_ord_impl_on_ord_type.rs:50:1
    |
 LL | / impl PartialOrd for C {
 LL | |     fn partial_cmp(&self, _: &Self) -> Option<Ordering> {
@@ -22,6 +23,7 @@ LL | |     }
 LL | | }
    | |_^
    |
+   = note: this ensures the requirement that `Ord` and `PartialOrd` are consistent is satisfied
 help: change this to
    |
 LL |     fn partial_cmp(&self, other: &Self) -> Option<Ordering> { Some(self.cmp(other)) }

tests/ui/rename.fixed

@@ -14,6 +14,8 @@
 #![allow(clippy::mixed_read_write_in_expression)]
 #![allow(clippy::useless_conversion)]
 #![allow(clippy::match_result_ok)]
+#![allow(clippy::manual_clone_impl_on_copy_type)]
+#![allow(clippy::manual_partial_ord_impl_on_ord_type)]
 #![allow(clippy::arithmetic_side_effects)]
 #![allow(clippy::overly_complex_bool_expr)]
 #![allow(clippy::new_without_default)]
@@ -33,10 +35,10 @@
 #![allow(drop_bounds)]
 #![allow(dropping_copy_types)]
 #![allow(dropping_references)]
+#![allow(useless_ptr_null_checks)]
 #![allow(for_loops_over_fallibles)]
 #![allow(forgetting_copy_types)]
 #![allow(forgetting_references)]
-#![allow(useless_ptr_null_checks)]
 #![allow(array_into_iter)]
 #![allow(invalid_atomic_ordering)]
 #![allow(invalid_value)]
@@ -62,6 +64,8 @@
 #![warn(clippy::mixed_read_write_in_expression)]
 #![warn(clippy::useless_conversion)]
 #![warn(clippy::match_result_ok)]
+#![warn(clippy::manual_clone_impl_on_copy_type)]
+#![warn(clippy::manual_partial_ord_impl_on_ord_type)]
 #![warn(clippy::arithmetic_side_effects)]
 #![warn(clippy::overly_complex_bool_expr)]
 #![warn(clippy::new_without_default)]
@@ -85,12 +89,12 @@
 #![warn(drop_bounds)]
 #![warn(dropping_copy_types)]
 #![warn(dropping_references)]
+#![warn(useless_ptr_null_checks)]
 #![warn(for_loops_over_fallibles)]
 #![warn(for_loops_over_fallibles)]
 #![warn(for_loops_over_fallibles)]
 #![warn(forgetting_copy_types)]
 #![warn(forgetting_references)]
-#![warn(useless_ptr_null_checks)]
 #![warn(array_into_iter)]
 #![warn(invalid_atomic_ordering)]
 #![warn(invalid_value)]