Auto merge of rust-lang#111255 - flip1995:clippyup, r=Manishearth

Update Clippy

r? `@Manishearth`

Cargo.lock

@@ -577,7 +577,7 @@ checksum = "8a2dd5a6fe8c6e3502f568a6353e5273bbb15193ad9a89e457b9970798efbea1"
 
 [[package]]
 name = "clippy"
-version = "0.1.70"
+version = "0.1.71"
 dependencies = [
  "clap 4.2.1",
  "clippy_lints",
@@ -619,7 +619,7 @@ dependencies = [
 
 [[package]]
 name = "clippy_lints"
-version = "0.1.70"
+version = "0.1.71"
 dependencies = [
  "arrayvec",
  "cargo_metadata 0.15.3",
@@ -643,7 +643,7 @@ dependencies = [
 
 [[package]]
 name = "clippy_utils"
-version = "0.1.70"
+version = "0.1.71"
 dependencies = [
  "arrayvec",
  "if_chain",
@@ -969,7 +969,7 @@ checksum = "a0afaad2b26fa326569eb264b1363e8ae3357618c43982b3f285f0774ce76b69"
 
 [[package]]
 name = "declare_clippy_lint"
-version = "0.1.70"
+version = "0.1.71"
 dependencies = [
  "itertools",
  "quote",

src/tools/clippy/.github/workflows/remark.yml

@@ -36,6 +36,12 @@ jobs:
     - name: Check *.md files
       run: git ls-files -z '*.md' | xargs -0 -n 1 -I {} ./node_modules/.bin/remark {} -u lint -f > /dev/null
 
+    - name: Linkcheck book
+      run: |
+        rustup toolchain install nightly --component rust-docs
+        curl https://raw.githubusercontent.com/rust-lang/rust/master/src/tools/linkchecker/linkcheck.sh -o linkcheck.sh
+        sh linkcheck.sh clippy --path ./book
+        
     - name: Build mdbook
       run: mdbook build book
 

src/tools/clippy/CHANGELOG.md

@@ -44,7 +44,7 @@ Current stable, released 2023-04-20
 
 ### Enhancements
 
-* [`arithmetic_side_effects`]: No longer lints, if safe constant values are used.
+* [`arithmetic_side_effects`]: No longer lints if safe constant values are used.
   [#10310](https://github.com/rust-lang/rust-clippy/pull/10310)
 * [`needless_lifetimes`]: Now works in local macros
   [#10257](https://github.com/rust-lang/rust-clippy/pull/10257)
@@ -60,39 +60,39 @@ Current stable, released 2023-04-20
 
 ### False Positive Fixes
 
-* [`explicit_auto_deref`]: Now considers projections, when determining if auto deref is applicable
+* [`explicit_auto_deref`]: Now considers projections when determining if auto deref is applicable
   [#10386](https://github.com/rust-lang/rust-clippy/pull/10386)
-* [`manual_let_else`]: Now considers side effects of branches, before linting 
+* [`manual_let_else`]: Now considers side effects of branches before linting
   [#10336](https://github.com/rust-lang/rust-clippy/pull/10336)
 * [`uninlined_format_args`]: No longer lints for arguments with generic parameters
   [#10343](https://github.com/rust-lang/rust-clippy/pull/10343)
-* [`needless_lifetimes`]: No longer lints signatures in macros, if the lifetime is a metavariable
+* [`needless_lifetimes`]: No longer lints signatures in macros if the lifetime is a metavariable
   [#10380](https://github.com/rust-lang/rust-clippy/pull/10380)
-* [`len_without_is_empty`]: No longer lints, if `len` as a non-default signature
+* [`len_without_is_empty`]: No longer lints if `len` as a non-default signature
   [#10255](https://github.com/rust-lang/rust-clippy/pull/10255)
-* [`unusual_byte_groupings`]: Relaxed the required restrictions for specific sizes, to reduce false
+* [`unusual_byte_groupings`]: Relaxed the required restrictions for specific sizes to reduce false
   positives
   [#10353](https://github.com/rust-lang/rust-clippy/pull/10353)
 * [`manual_let_else`]: No longer lints `if-else` blocks if they can divergent
   [#10332](https://github.com/rust-lang/rust-clippy/pull/10332)
 * [`expect_used`], [`unwrap_used`], [`dbg_macro`], [`print_stdout`], [`print_stderr`]: No longer lint
-  in test functions, if `allow-expect-in-tests` is set
+  in test functions if `allow-expect-in-tests` is set
   [#10391](https://github.com/rust-lang/rust-clippy/pull/10391)
 * [`unnecessary_safety_comment`]: No longer lints code inside macros
   [#10106](https://github.com/rust-lang/rust-clippy/pull/10106)
-* [`never_loop`]: No longer lints, for statements following break statements for outer blocks.
+* [`never_loop`]: No longer lints statements following break statements for outer blocks.
   [#10311](https://github.com/rust-lang/rust-clippy/pull/10311)
 
 ### Suggestion Fixes/Improvements
 
-* [`box_default`]: The suggestion now includes the type for trait objects, when needed
+* [`box_default`]: The suggestion now includes the type for trait objects when needed
   [#10382](https://github.com/rust-lang/rust-clippy/pull/10382)
 * [`cast_possible_truncation`]: Now suggests using `try_from` or allowing the lint
   [#10038](https://github.com/rust-lang/rust-clippy/pull/10038)
 * [`invalid_regex`]: Regex errors for non-literals or regular strings containing escape sequences will
   now show the complete error
   [#10231](https://github.com/rust-lang/rust-clippy/pull/10231)
-* [`transmutes_expressible_as_ptr_casts`]: The suggestion now works, if the base type is borrowed
+* [`transmutes_expressible_as_ptr_casts`]: The suggestion now works if the base type is borrowed
   [#10193](https://github.com/rust-lang/rust-clippy/pull/10193)
 * [`needless_return`]: Now removes all semicolons on the same line
   [#10187](https://github.com/rust-lang/rust-clippy/pull/10187)
@@ -113,7 +113,7 @@ Current stable, released 2023-04-20
 
 ### ICE Fixes
 
-* [`needless_pass_by_value`]: Fixed an ICE, caused by how late bounds were handled
+* [`needless_pass_by_value`]: Fixed an ICE caused by how late bounds were handled
   [#10328](https://github.com/rust-lang/rust-clippy/pull/10328)
 * [`needless_borrow`]: No longer panics on ambiguous projections
   [#10403](https://github.com/rust-lang/rust-clippy/pull/10403)
@@ -4582,6 +4582,7 @@ Released 2018-09-13
 [`debug_assert_with_mut_call`]: https://rust-lang.github.io/rust-clippy/master/index.html#debug_assert_with_mut_call
 [`decimal_literal_representation`]: https://rust-lang.github.io/rust-clippy/master/index.html#decimal_literal_representation
 [`declare_interior_mutable_const`]: https://rust-lang.github.io/rust-clippy/master/index.html#declare_interior_mutable_const
+[`default_constructed_unit_structs`]: https://rust-lang.github.io/rust-clippy/master/index.html#default_constructed_unit_structs
 [`default_instead_of_iter_empty`]: https://rust-lang.github.io/rust-clippy/master/index.html#default_instead_of_iter_empty
 [`default_numeric_fallback`]: https://rust-lang.github.io/rust-clippy/master/index.html#default_numeric_fallback
 [`default_trait_access`]: https://rust-lang.github.io/rust-clippy/master/index.html#default_trait_access
@@ -4797,6 +4798,7 @@ Released 2018-09-13
 [`manual_strip`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_strip
 [`manual_swap`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_swap
 [`manual_unwrap_or`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_unwrap_or
+[`manual_while_let_some`]: https://rust-lang.github.io/rust-clippy/master/index.html#manual_while_let_some
 [`many_single_char_names`]: https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
 [`map_clone`]: https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
 [`map_collect_result_unit`]: https://rust-lang.github.io/rust-clippy/master/index.html#map_collect_result_unit
@@ -4864,6 +4866,7 @@ Released 2018-09-13
 [`needless_arbitrary_self_type`]: https://rust-lang.github.io/rust-clippy/master/index.html#needless_arbitrary_self_type
 [`needless_bitwise_bool`]: https://rust-lang.github.io/rust-clippy/master/index.html#needless_bitwise_bool
 [`needless_bool`]: https://rust-lang.github.io/rust-clippy/master/index.html#needless_bool
+[`needless_bool_assign`]: https://rust-lang.github.io/rust-clippy/master/index.html#needless_bool_assign
 [`needless_borrow`]: https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
 [`needless_borrowed_reference`]: https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrowed_reference
 [`needless_collect`]: https://rust-lang.github.io/rust-clippy/master/index.html#needless_collect

src/tools/clippy/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "clippy"
-version = "0.1.70"
+version = "0.1.71"
 description = "A bunch of helpful lints to avoid common pitfalls in Rust"
 repository = "https://github.com/rust-lang/rust-clippy"
 readme = "README.md"

src/tools/clippy/README.md

@@ -91,7 +91,8 @@ cargo clippy
 
 #### Automatically applying Clippy suggestions
 
-Clippy can automatically apply some lint suggestions, just like the compiler.
+Clippy can automatically apply some lint suggestions, just like the compiler. Note that `--fix` implies
+`--all-targets`, so it can fix as much code as it can.
 
 ```terminal
 cargo clippy --fix

src/tools/clippy/book/src/development/lint_passes.md

@@ -50,7 +50,7 @@ questions already, but the parser is okay with it. This is what we
 mean when we say `EarlyLintPass` deals with only syntax on the AST level.
 
 Alternatively, think of the `foo_functions` lint we mentioned in
-define new lints chapter.
+define new lints <!-- FIXME: add link --> chapter.
 
 We want the `foo_functions` lint to detect functions with `foo` as their name.
 Writing a lint that only checks for the name of a function means that we only

src/tools/clippy/book/src/development/proposals/syntax-tree-patterns.md

@@ -139,7 +139,7 @@ whether the pattern matched.
 
 ## Pattern syntax
 
-The following examples demonstate the pattern syntax:
+The following examples demonstrate the pattern syntax:
 
 
 #### Any (`_`)

src/tools/clippy/book/src/lint_configuration.md

@@ -13,6 +13,8 @@ Please use that command to update the file and do not edit it by hand.
 | [msrv](#msrv) | `None` |
 | [cognitive-complexity-threshold](#cognitive-complexity-threshold) | `25` |
 | [disallowed-names](#disallowed-names) | `["foo", "baz", "quux"]` |
+| [semicolon-inside-block-ignore-singleline](#semicolon-inside-block-ignore-singleline) | `false` |
+| [semicolon-outside-block-ignore-multiline](#semicolon-outside-block-ignore-multiline) | `false` |
 | [doc-valid-idents](#doc-valid-idents) | `["KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "DirectX", "ECMAScript", "GPLv2", "GPLv3", "GitHub", "GitLab", "IPv4", "IPv6", "ClojureScript", "CoffeeScript", "JavaScript", "PureScript", "TypeScript", "NaN", "NaNs", "OAuth", "GraphQL", "OCaml", "OpenGL", "OpenMP", "OpenSSH", "OpenSSL", "OpenStreetMap", "OpenDNS", "WebGL", "TensorFlow", "TrueType", "iOS", "macOS", "FreeBSD", "TeX", "LaTeX", "BibTeX", "BibLaTeX", "MinGW", "CamelCase"]` |
 | [too-many-arguments-threshold](#too-many-arguments-threshold) | `7` |
 | [type-complexity-threshold](#type-complexity-threshold) | `250` |
@@ -203,6 +205,22 @@ default configuration of Clippy. By default, any configuration will replace the
 * [disallowed_names](https://rust-lang.github.io/rust-clippy/master/index.html#disallowed_names)
 
 
+### semicolon-inside-block-ignore-singleline
+Whether to lint only if it's multiline.
+
+**Default Value:** `false` (`bool`)
+
+* [semicolon_inside_block](https://rust-lang.github.io/rust-clippy/master/index.html#semicolon_inside_block)
+
+
+### semicolon-outside-block-ignore-multiline
+Whether to lint only if it's singleline.
+
+**Default Value:** `false` (`bool`)
+
+* [semicolon_outside_block](https://rust-lang.github.io/rust-clippy/master/index.html#semicolon_outside_block)
+
+
 ### doc-valid-idents
 The list of words this lint should not consider as identifiers needing ticks. The value
 `".."` can be used as part of the list to indicate, that the configured values should be appended to the

src/tools/clippy/book/src/usage.md

@@ -111,7 +111,8 @@ fn main() {
 
 ### Automatically applying Clippy suggestions
 
-Clippy can automatically apply some lint suggestions, just like the compiler.
+Clippy can automatically apply some lint suggestions, just like the compiler. Note that `--fix` implies
+`--all-targets`, so it can fix as much code as it can.
 
 ```terminal
 cargo clippy --fix

src/tools/clippy/clippy_dev/src/dogfood.rs

@@ -1,4 +1,4 @@
-use crate::clippy_project_root;
+use crate::{clippy_project_root, exit_if_err};
 use std::process::Command;
 
 /// # Panics
@@ -10,7 +10,7 @@ pub fn dogfood(fix: bool, allow_dirty: bool, allow_staged: bool) {
     cmd.current_dir(clippy_project_root())
         .args(["test", "--test", "dogfood"])
         .args(["--features", "internal"])
-        .args(["--", "dogfood_clippy"]);
+        .args(["--", "dogfood_clippy", "--nocapture"]);
 
     let mut dogfood_args = Vec::new();
     if fix {
@@ -27,7 +27,5 @@ pub fn dogfood(fix: bool, allow_dirty: bool, allow_staged: bool) {
 
     cmd.env("__CLIPPY_DOGFOOD_ARGS", dogfood_args.join(" "));
 
-    let output = cmd.output().expect("failed to run command");
-
-    println!("{}", String::from_utf8_lossy(&output.stdout));
+    exit_if_err(cmd.status());
 }

src/tools/clippy/clippy_dev/src/lib.rs

@@ -10,7 +10,9 @@
 extern crate rustc_driver;
 extern crate rustc_lexer;
 
+use std::io;
 use std::path::PathBuf;
+use std::process::{self, ExitStatus};
 
 pub mod bless;
 pub mod dogfood;
@@ -58,3 +60,14 @@ pub fn clippy_project_root() -> PathBuf {
     }
     panic!("error: Can't determine root of project. Please run inside a Clippy working dir.");
 }
+
+pub fn exit_if_err(status: io::Result<ExitStatus>) {
+    match status.expect("failed to run command").code() {
+        Some(0) => {},
+        Some(n) => process::exit(n),
+        None => {
+            eprintln!("Killed by signal");
+            process::exit(1);
+        },
+    }
+}

src/tools/clippy/clippy_dev/src/lint.rs

@@ -1,17 +1,6 @@
-use crate::cargo_clippy_path;
-use std::process::{self, Command, ExitStatus};
-use std::{fs, io};
-
-fn exit_if_err(status: io::Result<ExitStatus>) {
-    match status.expect("failed to run command").code() {
-        Some(0) => {},
-        Some(n) => process::exit(n),
-        None => {
-            eprintln!("Killed by signal");
-            process::exit(1);
-        },
-    }
-}
+use crate::{cargo_clippy_path, exit_if_err};
+use std::fs;
+use std::process::{self, Command};
 
 pub fn run<'a>(path: &str, args: impl Iterator<Item = &'a String>) {
     let is_file = match fs::metadata(path) {

src/tools/clippy/clippy_dev/src/update_lints.rs

@@ -36,60 +36,6 @@ pub enum UpdateMode {
 pub fn update(update_mode: UpdateMode) {
     let (lints, deprecated_lints, renamed_lints) = gather_all();
     generate_lint_files(update_mode, &lints, &deprecated_lints, &renamed_lints);
-    remove_old_files(update_mode);
-}
-
-/// Remove files no longer needed after <https://github.com/rust-lang/rust-clippy/pull/9541>
-/// that may be reintroduced unintentionally
-///
-/// FIXME: This is a temporary measure that should be removed when there are no more PRs that
-/// include the stray files
-fn remove_old_files(update_mode: UpdateMode) {
-    let mut failed = false;
-    let mut remove_file = |path: &Path| match update_mode {
-        UpdateMode::Check => {
-            if path.exists() {
-                failed = true;
-                println!("unexpected file: {}", path.display());
-            }
-        },
-        UpdateMode::Change => {
-            if fs::remove_file(path).is_ok() {
-                println!("removed file: {}", path.display());
-            }
-        },
-    };
-
-    let files = [
-        "clippy_lints/src/lib.register_all.rs",
-        "clippy_lints/src/lib.register_cargo.rs",
-        "clippy_lints/src/lib.register_complexity.rs",
-        "clippy_lints/src/lib.register_correctness.rs",
-        "clippy_lints/src/lib.register_internal.rs",
-        "clippy_lints/src/lib.register_lints.rs",
-        "clippy_lints/src/lib.register_nursery.rs",
-        "clippy_lints/src/lib.register_pedantic.rs",
-        "clippy_lints/src/lib.register_perf.rs",
-        "clippy_lints/src/lib.register_restriction.rs",
-        "clippy_lints/src/lib.register_style.rs",
-        "clippy_lints/src/lib.register_suspicious.rs",
-        "src/docs.rs",
-    ];
-
-    for file in files {
-        remove_file(Path::new(file));
-    }
-
-    if let Ok(docs_dir) = fs::read_dir("src/docs") {
-        for doc_file in docs_dir {
-            let path = doc_file.unwrap().path();
-            remove_file(&path);
-        }
-    }
-
-    if failed {
-        exit_with_failure();
-    }
 }
 
 fn generate_lint_files(

src/tools/clippy/clippy_lints/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "clippy_lints"
-version = "0.1.70"
+version = "0.1.71"
 description = "A bunch of helpful lints to avoid common pitfalls in Rust"
 repository = "https://github.com/rust-lang/rust-clippy"
 readme = "README.md"

src/tools/clippy/clippy_lints/src/allow_attributes.rs

@@ -2,7 +2,8 @@ use ast::AttrStyle;
 use clippy_utils::diagnostics::span_lint_and_sugg;
 use rustc_ast as ast;
 use rustc_errors::Applicability;
-use rustc_lint::{LateContext, LateLintPass};
+use rustc_lint::{LateContext, LateLintPass, LintContext};
+use rustc_middle::lint::in_external_macro;
 use rustc_session::{declare_lint_pass, declare_tool_lint};
 
 declare_clippy_lint! {
@@ -51,6 +52,7 @@ impl LateLintPass<'_> for AllowAttribute {
     // Separate each crate's features.
     fn check_attribute(&mut self, cx: &LateContext<'_>, attr: &ast::Attribute) {
         if_chain! {
+            if !in_external_macro(cx.sess(), attr.span);
             if cx.tcx.features().lint_reasons;
             if let AttrStyle::Outer = attr.style;
             if let Some(ident) = attr.ident();

src/tools/clippy/clippy_lints/src/casts/mod.rs

@@ -638,7 +638,7 @@ declare_clippy_lint! {
     #[clippy::version = "1.66.0"]
     pub AS_PTR_CAST_MUT,
     nursery,
-    "casting the result of the `&self`-taking `as_ptr` to a mutabe pointer"
+    "casting the result of the `&self`-taking `as_ptr` to a mutable pointer"
 }
 
 declare_clippy_lint! {

src/tools/clippy/clippy_lints/src/casts/unnecessary_cast.rs

@@ -141,9 +141,9 @@ fn lint_unnecessary_cast(
 
 fn get_numeric_literal<'e>(expr: &'e Expr<'e>) -> Option<&'e Lit> {
     match expr.kind {
-        ExprKind::Lit(ref lit) => Some(lit),
+        ExprKind::Lit(lit) => Some(lit),
         ExprKind::Unary(UnOp::Neg, e) => {
-            if let ExprKind::Lit(ref lit) = e.kind {
+            if let ExprKind::Lit(lit) = e.kind {
                 Some(lit)
             } else {
                 None