Auto merge of rust-lang#119856 - flip1995:clippy-subtree-update, r=Manishearth

Clippy subtree update

r? `@Manishearth`

Author: bors

Diff for: src/tools/clippy/.github/workflows/clippy.yml

@@ -38,7 +38,7 @@ jobs:
         github_token: "${{ secrets.github_token }}"
 
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Install toolchain
       run: rustup show active-toolchain

Diff for: src/tools/clippy/.github/workflows/clippy_bors.yml

@@ -26,7 +26,7 @@ jobs:
         github_token: "${{ secrets.github_token }}"
 
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         ref: ${{ github.ref }}
 
@@ -72,7 +72,7 @@ jobs:
         github_token: "${{ secrets.github_token }}"
 
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Install i686 dependencies
       if: matrix.host == 'i686-unknown-linux-gnu'
@@ -151,7 +151,7 @@ jobs:
         github_token: "${{ secrets.github_token }}"
 
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Install toolchain
       run: rustup show active-toolchain
@@ -175,7 +175,7 @@ jobs:
         github_token: "${{ secrets.github_token }}"
 
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Install toolchain
       run: rustup show active-toolchain
@@ -231,7 +231,7 @@ jobs:
         github_token: "${{ secrets.github_token }}"
 
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Install toolchain
       run: rustup show active-toolchain

Diff for: src/tools/clippy/.github/workflows/clippy_dev.yml

@@ -24,7 +24,7 @@ jobs:
     steps:
     # Setup
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     # Run
     - name: Build

Diff for: src/tools/clippy/.github/workflows/deploy.yml

@@ -21,10 +21,10 @@ jobs:
     steps:
     # Setup
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         ref: ${{ env.TARGET_BRANCH }}
         path: 'out'

Diff for: src/tools/clippy/.github/workflows/remark.yml

@@ -16,7 +16,7 @@ jobs:
     steps:
     # Setup
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Setup Node.js
       uses: actions/setup-node@v3

Diff for: src/tools/clippy/CHANGELOG.md

@@ -5105,6 +5105,7 @@ Released 2018-09-13
 [`else_if_without_else`]: https://rust-lang.github.io/rust-clippy/master/index.html#else_if_without_else
 [`empty_drop`]: https://rust-lang.github.io/rust-clippy/master/index.html#empty_drop
 [`empty_enum`]: https://rust-lang.github.io/rust-clippy/master/index.html#empty_enum
+[`empty_enum_variants_with_brackets`]: https://rust-lang.github.io/rust-clippy/master/index.html#empty_enum_variants_with_brackets
 [`empty_line_after_doc_comments`]: https://rust-lang.github.io/rust-clippy/master/index.html#empty_line_after_doc_comments
 [`empty_line_after_outer_attr`]: https://rust-lang.github.io/rust-clippy/master/index.html#empty_line_after_outer_attr
 [`empty_loop`]: https://rust-lang.github.io/rust-clippy/master/index.html#empty_loop
@@ -5294,6 +5295,7 @@ Released 2018-09-13
 [`manual_is_ascii_check`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_ascii_check
 [`manual_is_finite`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_finite
 [`manual_is_infinite`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_infinite
+[`manual_is_variant_and`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_variant_and
 [`manual_let_else`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_let_else
 [`manual_main_separator_str`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_main_separator_str
 [`manual_map`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_map
@@ -5440,6 +5442,7 @@ Released 2018-09-13
 [`only_used_in_recursion`]: https://rust-lang.github.io/rust-clippy/master/index.html#only_used_in_recursion
 [`op_ref`]: https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
 [`option_and_then_some`]: https://rust-lang.github.io/rust-clippy/master/index.html#option_and_then_some
+[`option_as_ref_cloned`]: https://rust-lang.github.io/rust-clippy/master/index.html#option_as_ref_cloned
 [`option_as_ref_deref`]: https://rust-lang.github.io/rust-clippy/master/index.html#option_as_ref_deref
 [`option_env_unwrap`]: https://rust-lang.github.io/rust-clippy/master/index.html#option_env_unwrap
 [`option_expect_used`]: https://rust-lang.github.io/rust-clippy/master/index.html#option_expect_used
@@ -5483,6 +5486,7 @@ Released 2018-09-13
 [`ptr_eq`]: https://rust-lang.github.io/rust-clippy/master/index.html#ptr_eq
 [`ptr_offset_with_cast`]: https://rust-lang.github.io/rust-clippy/master/index.html#ptr_offset_with_cast
 [`pub_enum_variant_names`]: https://rust-lang.github.io/rust-clippy/master/index.html#pub_enum_variant_names
+[`pub_underscore_fields`]: https://rust-lang.github.io/rust-clippy/master/index.html#pub_underscore_fields
 [`pub_use`]: https://rust-lang.github.io/rust-clippy/master/index.html#pub_use
 [`pub_with_shorthand`]: https://rust-lang.github.io/rust-clippy/master/index.html#pub_with_shorthand
 [`pub_without_shorthand`]: https://rust-lang.github.io/rust-clippy/master/index.html#pub_without_shorthand
@@ -5580,6 +5584,7 @@ Released 2018-09-13
 [`stable_sort_primitive`]: https://rust-lang.github.io/rust-clippy/master/index.html#stable_sort_primitive
 [`std_instead_of_alloc`]: https://rust-lang.github.io/rust-clippy/master/index.html#std_instead_of_alloc
 [`std_instead_of_core`]: https://rust-lang.github.io/rust-clippy/master/index.html#std_instead_of_core
+[`str_split_at_newline`]: https://rust-lang.github.io/rust-clippy/master/index.html#str_split_at_newline
 [`str_to_string`]: https://rust-lang.github.io/rust-clippy/master/index.html#str_to_string
 [`string_add`]: https://rust-lang.github.io/rust-clippy/master/index.html#string_add
 [`string_add_assign`]: https://rust-lang.github.io/rust-clippy/master/index.html#string_add_assign
@@ -5612,6 +5617,7 @@ Released 2018-09-13
 [`temporary_cstring_as_ptr`]: https://rust-lang.github.io/rust-clippy/master/index.html#temporary_cstring_as_ptr
 [`test_attr_in_doctest`]: https://rust-lang.github.io/rust-clippy/master/index.html#test_attr_in_doctest
 [`tests_outside_test_module`]: https://rust-lang.github.io/rust-clippy/master/index.html#tests_outside_test_module
+[`thread_local_initializer_can_be_made_const`]: https://rust-lang.github.io/rust-clippy/master/index.html#thread_local_initializer_can_be_made_const
 [`to_digit_is_some`]: https://rust-lang.github.io/rust-clippy/master/index.html#to_digit_is_some
 [`to_string_in_display`]: https://rust-lang.github.io/rust-clippy/master/index.html#to_string_in_display
 [`to_string_in_format_args`]: https://rust-lang.github.io/rust-clippy/master/index.html#to_string_in_format_args
@@ -5810,4 +5816,5 @@ Released 2018-09-13
 [`allowed-dotfiles`]: https://doc.rust-lang.org/clippy/lint_configuration.html#allowed-dotfiles
 [`enforce-iter-loop-reborrow`]: https://doc.rust-lang.org/clippy/lint_configuration.html#enforce-iter-loop-reborrow
 [`check-private-items`]: https://doc.rust-lang.org/clippy/lint_configuration.html#check-private-items
+[`pub-underscore-fields-behavior`]: https://doc.rust-lang.org/clippy/lint_configuration.html#pub-underscore-fields-behavior
 <!-- end autogenerated links to configuration documentation -->

Diff for: src/tools/clippy/COPYRIGHT

@@ -1,6 +1,6 @@
 // REUSE-IgnoreStart
 
-Copyright 2014-2022 The Rust Project Developers
+Copyright 2014-2024 The Rust Project Developers
 
 Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
 http://www.apache.org/licenses/LICENSE-2.0> or the MIT license

Diff for: src/tools/clippy/LICENSE-APACHE

@@ -186,7 +186,7 @@ APPENDIX: How to apply the Apache License to your work.
    same "printed page" as the copyright notice for easier
    identification within third-party archives.
 
-Copyright 2014-2022 The Rust Project Developers
+Copyright 2014-2024 The Rust Project Developers
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.

Diff for: src/tools/clippy/LICENSE-MIT

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2014-2022 The Rust Project Developers
+Copyright (c) 2014-2024 The Rust Project Developers
 
 Permission is hereby granted, free of charge, to any
 person obtaining a copy of this software and associated

Diff for: src/tools/clippy/README.md

@@ -5,7 +5,7 @@
 
 A collection of lints to catch common mistakes and improve your [Rust](https://github.com/rust-lang/rust) code.
 
-[There are over 650 lints included in this crate!](https://rust-lang.github.io/rust-clippy/master/index.html)
+[There are over 700 lints included in this crate!](https://rust-lang.github.io/rust-clippy/master/index.html)
 
 Lints are divided into categories, each with a default [lint level](https://doc.rust-lang.org/rustc/lints/levels.html).
 You can choose how much Clippy is supposed to ~~annoy~~ help you by changing the lint level by category.
@@ -278,7 +278,7 @@ If you want to contribute to Clippy, you can find more information in [CONTRIBUT
 
 <!-- REUSE-IgnoreStart -->
 
-Copyright 2014-2023 The Rust Project Developers
+Copyright 2014-2024 The Rust Project Developers
 
 Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
 [https://www.apache.org/licenses/LICENSE-2.0](https://www.apache.org/licenses/LICENSE-2.0)> or the MIT license

Diff for: src/tools/clippy/book/src/README.md

@@ -6,7 +6,7 @@
 A collection of lints to catch common mistakes and improve your
 [Rust](https://github.com/rust-lang/rust) code.
 
-[There are over 650 lints included in this crate!](https://rust-lang.github.io/rust-clippy/master/index.html)
+[There are over 700 lints included in this crate!](https://rust-lang.github.io/rust-clippy/master/index.html)
 
 Lints are divided into categories, each with a default [lint
 level](https://doc.rust-lang.org/rustc/lints/levels.html). You can choose how

Diff for: src/tools/clippy/book/src/SUMMARY.md

@@ -9,6 +9,7 @@
 - [Clippy's Lints](lints.md)
 - [Continuous Integration](continuous_integration/README.md)
     - [GitHub Actions](continuous_integration/github_actions.md)
+    - [GitLab CI](continuous_integration/gitlab.md)
     - [Travis CI](continuous_integration/travis.md)
 - [Development](development/README.md)
     - [Basics](development/basics.md)

Diff for: src/tools/clippy/book/src/continuous_integration/github_actions.md

@@ -15,7 +15,7 @@ jobs:
   clippy_check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Run Clippy
         run: cargo clippy --all-targets --all-features
 ```

Diff for: src/tools/clippy/book/src/continuous_integration/gitlab.md

@@ -0,0 +1,16 @@
+# GitLab CI
+
+You can add Clippy to GitLab CI by using the latest stable [rust docker image](https://hub.docker.com/_/rust),
+as it is shown in the `.gitlab-ci.yml` CI configuration file below,
+
+```yml
+# Make sure CI fails on all warnings, including Clippy lints
+variables:
+  RUSTFLAGS: "-Dwarnings"
+
+clippy_check:
+  image: rust:latest
+  script:
+    - rustup component add clippy
+    - cargo clippy --all-targets --all-features
+```

Diff for: src/tools/clippy/book/src/development/macro_expansions.md

@@ -102,7 +102,7 @@ let x: Option<u32> = Some(42);
 m!(x, x.unwrap());
 ```
 
-If the `m!(x, x.unwrapp());` line is expanded, we would get two expanded
+If the `m!(x, x.unwrap());` line is expanded, we would get two expanded
 expressions:
 
 - `x.is_some()` (from the `$a.is_some()` line in the `m` macro)

Diff for: src/tools/clippy/book/src/development/type_checking.md

@@ -133,7 +133,7 @@ in this chapter:
 - [Type checking](https://rustc-dev-guide.rust-lang.org/type-checking.html)
 - [Ty module](https://rustc-dev-guide.rust-lang.org/ty.html)
 
-[Adt]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_type_ir/sty/enum.TyKind.html#variant.Adt
+[Adt]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_type_ir/ty_kind/enum.TyKind.html#variant.Adt
 [AdtDef]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/ty/adt/struct.AdtDef.html
 [expr_ty]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/ty/struct.TypeckResults.html#method.expr_ty
 [node_type]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/ty/struct.TypeckResults.html#method.node_type
@@ -144,7 +144,7 @@ in this chapter:
 [LateLintPass]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_lint/trait.LateLintPass.html
 [pat_ty]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/ty/typeck_results/struct.TypeckResults.html#method.pat_ty
 [Ty]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/ty/struct.Ty.html
-[TyKind]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_type_ir/sty/enum.TyKind.html
+[TyKind]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_type_ir/ty_kind/enum.TyKind.html
 [TypeckResults]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/ty/struct.TypeckResults.html
 [middle_ty]: https://doc.rust-lang.org/beta/nightly-rustc/rustc_middle/ty/struct.Ty.html
 [hir_ty]: https://doc.rust-lang.org/beta/nightly-rustc/rustc_hir/struct.Ty.html

Diff for: src/tools/clippy/book/src/lint_configuration.md

@@ -805,3 +805,13 @@ for _ in &mut *rmvec {}
 * [`missing_errors_doc`](https://rust-lang.github.io/rust-clippy/master/index.html#missing_errors_doc)
 
 
+## `pub-underscore-fields-behavior`
+
+
+**Default Value:** `"PublicallyExported"`
+
+---
+**Affected lints:**
+* [`pub_underscore_fields`](https://rust-lang.github.io/rust-clippy/master/index.html#pub_underscore_fields)
+
+

Diff for: src/tools/clippy/clippy_config/src/conf.rs

@@ -1,5 +1,5 @@
 use crate::msrvs::Msrv;
-use crate::types::{DisallowedPath, MacroMatcher, MatchLintBehaviour, Rename};
+use crate::types::{DisallowedPath, MacroMatcher, MatchLintBehaviour, PubUnderscoreFieldsBehaviour, Rename};
 use crate::ClippyConfiguration;
 use rustc_data_structures::fx::FxHashSet;
 use rustc_session::Session;
@@ -547,6 +547,11 @@ define_Conf! {
     ///
     /// Whether to also run the listed lints on private items.
     (check_private_items: bool = false),
+    /// Lint: PUB_UNDERSCORE_FIELDS
+    ///
+    /// Lint "public" fields in a struct that are prefixed with an underscore based on their
+    /// exported visibility, or whether they are marked as "pub".
+    (pub_underscore_fields_behavior: PubUnderscoreFieldsBehaviour = PubUnderscoreFieldsBehaviour::PublicallyExported),
 }
 
 /// Search for the configuration file.

Diff for: src/tools/clippy/clippy_config/src/metadata.rs

@@ -96,6 +96,9 @@ fn parse_config_field_doc(doc_comment: &str) -> Option<(Vec<String>, String)> {
         doc_comment.make_ascii_lowercase();
         let lints: Vec<String> = doc_comment
             .split_off(DOC_START.len())
+            .lines()
+            .next()
+            .unwrap()
             .split(", ")
             .map(str::to_string)
             .collect();

Diff for: src/tools/clippy/clippy_config/src/msrvs.rs

@@ -17,7 +17,7 @@ macro_rules! msrv_aliases {
 // names may refer to stabilized feature flags or library items
 msrv_aliases! {
     1,71,0 { TUPLE_ARRAY_CONVERSIONS, BUILD_HASHER_HASH_ONE }
-    1,70,0 { OPTION_IS_SOME_AND, BINARY_HEAP_RETAIN }
+    1,70,0 { OPTION_RESULT_IS_VARIANT_AND, BINARY_HEAP_RETAIN }
     1,68,0 { PATH_MAIN_SEPARATOR_STR }
     1,65,0 { LET_ELSE, POINTER_CAST_CONSTNESS }
     1,62,0 { BOOL_THEN_SOME, DEFAULT_ENUM_ATTRIBUTE }

Diff for: src/tools/clippy/clippy_config/src/types.rs

@@ -126,3 +126,9 @@ unimplemented_serialize! {
     Rename,
     MacroMatcher,
 }
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Deserialize, Serialize)]
+pub enum PubUnderscoreFieldsBehaviour {
+    PublicallyExported,
+    AllPubFields,
+}

Diff for: src/tools/clippy/clippy_dev/src/new_lint.rs

@@ -67,7 +67,7 @@ pub fn create(
     if pass == "early" {
         println!(
             "\n\
-            NOTE: Use a late pass unless you need something specific from\
+            NOTE: Use a late pass unless you need something specific from\n\
             an early pass, as they lack many features and utilities"
         );
     }