clippy_lints/src/lib.rs

   1 // error-pattern:cargo-clippy
   2
   3 #![feature(box_syntax)]
   4 #![feature(box_patterns)]
   5 #![feature(never_type)]
   6 #![feature(rustc_private)]
   7 #![feature(slice_patterns)]
   8 #![feature(stmt_expr_attributes)]
   9 #![allow(clippy::missing_docs_in_private_items)]
  10 #![recursion_limit = "512"]
  11 #![warn(rust_2018_idioms, trivial_casts, trivial_numeric_casts)]
  12 #![deny(rustc::internal)]
  13 #![cfg_attr(feature = "deny-warnings", deny(warnings))]
  14 #![feature(crate_visibility_modifier)]
  15 #![feature(concat_idents)]
  16
  17 // FIXME: switch to something more ergonomic here, once available.
  18 // (Currently there is no way to opt into sysroot crates without `extern crate`.)
  19 #[allow(unused_extern_crates)]
  20 extern crate fmt_macros;
  21 #[allow(unused_extern_crates)]
  22 extern crate rustc;
  23 #[allow(unused_extern_crates)]
  24 extern crate rustc_data_structures;
  25 #[allow(unused_extern_crates)]
  26 extern crate rustc_errors;
  27 #[allow(unused_extern_crates)]
  28 extern crate rustc_mir;
  29 #[allow(unused_extern_crates)]
  30 extern crate rustc_plugin;
  31 #[allow(unused_extern_crates)]
  32 extern crate rustc_target;
  33 #[allow(unused_extern_crates)]
  34 extern crate rustc_typeck;
  35 #[allow(unused_extern_crates)]
  36 extern crate syntax;
  37 #[allow(unused_extern_crates)]
  38 extern crate syntax_pos;
  39
  40 use toml;
  41
  42 /// Macro used to declare a Clippy lint.
  43 ///
  44 /// Every lint declaration consists of 4 parts:
  45 ///
  46 /// 1. The documentation, which is used for the website
  47 /// 2. The `LINT_NAME`. See [lint naming][lint_naming] on lint naming conventions.
  48 /// 3. The `lint_level`, which is a mapping from *one* of our lint groups to `Allow`, `Warn` or
  49 ///    `Deny`. The lint level here has nothing to do with what lint groups the lint is a part of.
  50 /// 4. The `description` that contains a short explanation on what's wrong with code where the
  51 ///    lint is triggered.
  52 ///
  53 /// Currently the categories `style`, `correctness`, `complexity` and `perf` are enabled by default.
  54 /// As said in the README.md of this repository, if the lint level mapping changes, please update
  55 /// README.md.
  56 ///
  57 /// # Example
  58 ///
  59 /// ```
  60 /// # #![feature(rustc_private)]
  61 /// # #[allow(unused_extern_crates)]
  62 /// # extern crate rustc;
  63 /// # #[macro_use]
  64 /// # use clippy_lints::declare_clippy_lint;
  65 /// use rustc::declare_tool_lint;
  66 ///
  67 /// declare_clippy_lint! {
  68 ///     /// **What it does:** Checks for ... (describe what the lint matches).
  69 ///     ///
  70 ///     /// **Why is this bad?** Supply the reason for linting the code.
  71 ///     ///
  72 ///     /// **Known problems:** None. (Or describe where it could go wrong.)
  73 ///     ///
  74 ///     /// **Example:**
  75 ///     ///
  76 ///     /// ```rust
  77 ///     /// // Bad
  78 ///     /// Insert a short example of code that triggers the lint
  79 ///     ///
  80 ///     /// // Good
  81 ///     /// Insert a short example of improved code that doesn't trigger the lint
  82 ///     /// ```
  83 ///     pub LINT_NAME,
  84 ///     pedantic,
  85 ///     "description"
  86 /// }
  87 /// ```
  88 /// [lint_naming]: https://rust-lang.github.io/rfcs/0344-conventions-galore.html#lints
  89 #[macro_export]
  90 macro_rules! declare_clippy_lint {
  91     { $(#[$attr:meta])* pub $name:tt, style, $description:tt } => {
  92         declare_tool_lint! {
  93             $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
  94         }
  95     };
  96     { $(#[$attr:meta])* pub $name:tt, correctness, $description:tt } => {
  97         declare_tool_lint! {
  98             $(#[$attr])* pub clippy::$name, Deny, $description, report_in_external_macro: true
  99         }
 100     };
 101     { $(#[$attr:meta])* pub $name:tt, complexity, $description:tt } => {
 102         declare_tool_lint! {
 103             $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
 104         }
 105     };
 106     { $(#[$attr:meta])* pub $name:tt, perf, $description:tt } => {
 107         declare_tool_lint! {
 108             $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
 109         }
 110     };
 111     { $(#[$attr:meta])* pub $name:tt, pedantic, $description:tt } => {
 112         declare_tool_lint! {
 113             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
 114         }
 115     };
 116     { $(#[$attr:meta])* pub $name:tt, restriction, $description:tt } => {
 117         declare_tool_lint! {
 118             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
 119         }
 120     };
 121     { $(#[$attr:meta])* pub $name:tt, cargo, $description:tt } => {
 122         declare_tool_lint! {
 123             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
 124         }
 125     };
 126     { $(#[$attr:meta])* pub $name:tt, nursery, $description:tt } => {
 127         declare_tool_lint! {
 128             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
 129         }
 130     };
 131     { $(#[$attr:meta])* pub $name:tt, internal, $description:tt } => {
 132         declare_tool_lint! {
 133             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
 134         }
 135     };
 136     { $(#[$attr:meta])* pub $name:tt, internal_warn, $description:tt } => {
 137         declare_tool_lint! {
 138             $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
 139         }
 140     };
 141 }
 142
 143 mod consts;
 144 #[macro_use]
 145 mod utils;
 146
 147 // begin lints modules, do not remove this comment, it’s used in `update_lints`
 148 pub mod approx_const;
 149 pub mod arithmetic;
 150 pub mod assertions_on_constants;
 151 pub mod assign_ops;
 152 pub mod attrs;
 153 pub mod bit_mask;
 154 pub mod blacklisted_name;
 155 pub mod block_in_if_condition;
 156 pub mod booleans;
 157 pub mod bytecount;
 158 pub mod cargo_common_metadata;
 159 pub mod checked_conversions;
 160 pub mod cognitive_complexity;
 161 pub mod collapsible_if;
 162 pub mod copies;
 163 pub mod copy_iterator;
 164 pub mod dbg_macro;
 165 pub mod default_trait_access;
 166 pub mod derive;
 167 pub mod doc;
 168 pub mod double_comparison;
 169 pub mod double_parens;
 170 pub mod drop_bounds;
 171 pub mod drop_forget_ref;
 172 pub mod duration_subsec;
 173 pub mod else_if_without_else;
 174 pub mod empty_enum;
 175 pub mod entry;
 176 pub mod enum_clike;
 177 pub mod enum_glob_use;
 178 pub mod enum_variants;
 179 pub mod eq_op;
 180 pub mod erasing_op;
 181 pub mod escape;
 182 pub mod eta_reduction;
 183 pub mod eval_order_dependence;
 184 pub mod excessive_precision;
 185 pub mod explicit_write;
 186 pub mod fallible_impl_from;
 187 pub mod format;
 188 pub mod formatting;
 189 pub mod functions;
 190 pub mod get_last_with_len;
 191 pub mod identity_conversion;
 192 pub mod identity_op;
 193 pub mod if_not_else;
 194 pub mod implicit_return;
 195 pub mod indexing_slicing;
 196 pub mod infallible_destructuring_match;
 197 pub mod infinite_iter;
 198 pub mod inherent_impl;
 199 pub mod inherent_to_string;
 200 pub mod inline_fn_without_body;
 201 pub mod int_plus_one;
 202 pub mod integer_division;
 203 pub mod invalid_ref;
 204 pub mod items_after_statements;
 205 pub mod large_enum_variant;
 206 pub mod len_zero;
 207 pub mod let_if_seq;
 208 pub mod lifetimes;
 209 pub mod literal_representation;
 210 pub mod loops;
 211 pub mod main_recursion;
 212 pub mod map_clone;
 213 pub mod map_unit_fn;
 214 pub mod matches;
 215 pub mod mem_discriminant;
 216 pub mod mem_forget;
 217 pub mod mem_replace;
 218 pub mod methods;
 219 pub mod minmax;
 220 pub mod misc;
 221 pub mod misc_early;
 222 pub mod missing_const_for_fn;
 223 pub mod missing_doc;
 224 pub mod missing_inline;
 225 pub mod multiple_crate_versions;
 226 pub mod mut_mut;
 227 pub mod mut_reference;
 228 pub mod mutex_atomic;
 229 pub mod needless_bool;
 230 pub mod needless_borrow;
 231 pub mod needless_borrowed_ref;
 232 pub mod needless_continue;
 233 pub mod needless_pass_by_value;
 234 pub mod needless_update;
 235 pub mod neg_cmp_op_on_partial_ord;
 236 pub mod neg_multiply;
 237 pub mod new_without_default;
 238 pub mod no_effect;
 239 pub mod non_copy_const;
 240 pub mod non_expressive_names;
 241 pub mod ok_if_let;
 242 pub mod open_options;
 243 pub mod overflow_check_conditional;
 244 pub mod panic_unimplemented;
 245 pub mod partialeq_ne_impl;
 246 pub mod path_buf_push_overwrite;
 247 pub mod precedence;
 248 pub mod ptr;
 249 pub mod ptr_offset_with_cast;
 250 pub mod question_mark;
 251 pub mod ranges;
 252 pub mod redundant_clone;
 253 pub mod redundant_field_names;
 254 pub mod redundant_pattern_matching;
 255 pub mod redundant_static_lifetimes;
 256 pub mod reference;
 257 pub mod regex;
 258 pub mod replace_consts;
 259 pub mod returns;
 260 pub mod serde_api;
 261 pub mod shadow;
 262 pub mod slow_vector_initialization;
 263 pub mod strings;
 264 pub mod suspicious_trait_impl;
 265 pub mod swap;
 266 pub mod temporary_assignment;
 267 pub mod trait_bounds;
 268 pub mod transmute;
 269 pub mod transmuting_null;
 270 pub mod trivially_copy_pass_by_ref;
 271 pub mod try_err;
 272 pub mod types;
 273 pub mod unicode;
 274 pub mod unsafe_removed_from_name;
 275 pub mod unused_io_amount;
 276 pub mod unused_label;
 277 pub mod unwrap;
 278 pub mod use_self;
 279 pub mod vec;
 280 pub mod wildcard_dependencies;
 281 pub mod write;
 282 pub mod zero_div_zero;
 283 // end lints modules, do not remove this comment, it’s used in `update_lints`
 284
 285 pub use crate::utils::conf::Conf;
 286
 287 mod reexport {
 288     crate use syntax::ast::Name;
 289 }
 290
 291 /// Register all pre expansion lints
 292 ///
 293 /// Pre-expansion lints run before any macro expansion has happened.
 294 ///
 295 /// Note that due to the architecture of the compiler, currently `cfg_attr` attributes on crate
 296 /// level (i.e `#![cfg_attr(...)]`) will still be expanded even when using a pre-expansion pass.
 297 ///
 298 /// Used in `./src/driver.rs`.
 299 pub fn register_pre_expansion_lints(
 300     session: &rustc::session::Session,
 301     store: &mut rustc::lint::LintStore,
 302     conf: &Conf,
 303 ) {
 304     store.register_pre_expansion_pass(Some(session), true, false, box write::Write);
 305     store.register_pre_expansion_pass(
 306         Some(session),
 307         true,
 308         false,
 309         box redundant_field_names::RedundantFieldNames,
 310     );
 311     store.register_pre_expansion_pass(
 312         Some(session),
 313         true,
 314         false,
 315         box non_expressive_names::NonExpressiveNames {
 316             single_char_binding_names_threshold: conf.single_char_binding_names_threshold,
 317         },
 318     );
 319     store.register_pre_expansion_pass(Some(session), true, false, box attrs::DeprecatedCfgAttribute);
 320     store.register_pre_expansion_pass(Some(session), true, false, box dbg_macro::DbgMacro);
 321 }
 322
 323 #[doc(hidden)]
 324 pub fn read_conf(reg: &rustc_plugin::Registry<'_>) -> Conf {
 325     match utils::conf::file_from_args(reg.args()) {
 326         Ok(file_name) => {
 327             // if the user specified a file, it must exist, otherwise default to `clippy.toml` but
 328             // do not require the file to exist
 329             let file_name = if let Some(file_name) = file_name {
 330                 Some(file_name)
 331             } else {
 332                 match utils::conf::lookup_conf_file() {
 333                     Ok(path) => path,
 334                     Err(error) => {
 335                         reg.sess
 336                             .struct_err(&format!("error finding Clippy's configuration file: {}", error))
 337                             .emit();
 338                         None
 339                     },
 340                 }
 341             };
 342
 343             let file_name = file_name.map(|file_name| {
 344                 if file_name.is_relative() {
 345                     reg.sess
 346                         .local_crate_source_file
 347                         .as_ref()
 348                         .and_then(|file| std::path::Path::new(&file).parent().map(std::path::Path::to_path_buf))
 349                         .unwrap_or_default()
 350                         .join(file_name)
 351                 } else {
 352                     file_name
 353                 }
 354             });
 355
 356             let (conf, errors) = utils::conf::read(file_name.as_ref().map(std::convert::AsRef::as_ref));
 357
 358             // all conf errors are non-fatal, we just use the default conf in case of error
 359             for error in errors {
 360                 reg.sess
 361                     .struct_err(&format!(
 362                         "error reading Clippy's configuration file `{}`: {}",
 363                         file_name.as_ref().and_then(|p| p.to_str()).unwrap_or(""),
 364                         error
 365                     ))
 366                     .emit();
 367             }
 368
 369             conf
 370         },
 371         Err((err, span)) => {
 372             reg.sess
 373                 .struct_span_err(span, err)
 374                 .span_note(span, "Clippy will use default configuration")
 375                 .emit();
 376             toml::from_str("").expect("we never error on empty config files")
 377         },
 378     }
 379 }
 380
 381 /// Register all lints and lint groups with the rustc plugin registry
 382 ///
 383 /// Used in `./src/driver.rs`.
 384 #[allow(clippy::too_many_lines)]
 385 #[rustfmt::skip]
 386 pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
 387     let mut store = reg.sess.lint_store.borrow_mut();
 388     // begin deprecated lints, do not remove this comment, it’s used in `update_lints`
 389     store.register_removed(
 390         "should_assert_eq",
 391         "`assert!()` will be more flexible with RFC 2011",
 392     );
 393     store.register_removed(
 394         "extend_from_slice",
 395         "`.extend_from_slice(_)` is a faster way to extend a Vec by a slice",
 396     );
 397     store.register_removed(
 398         "range_step_by_zero",
 399         "`iterator.step_by(0)` panics nowadays",
 400     );
 401     store.register_removed(
 402         "unstable_as_slice",
 403         "`Vec::as_slice` has been stabilized in 1.7",
 404     );
 405     store.register_removed(
 406         "unstable_as_mut_slice",
 407         "`Vec::as_mut_slice` has been stabilized in 1.7",
 408     );
 409     store.register_removed(
 410         "str_to_string",
 411         "using `str::to_string` is common even today and specialization will likely happen soon",
 412     );
 413     store.register_removed(
 414         "string_to_string",
 415         "using `string::to_string` is common even today and specialization will likely happen soon",
 416     );
 417     store.register_removed(
 418         "misaligned_transmute",
 419         "this lint has been split into cast_ptr_alignment and transmute_ptr_to_ptr",
 420     );
 421     store.register_removed(
 422         "assign_ops",
 423         "using compound assignment operators (e.g., `+=`) is harmless",
 424     );
 425     store.register_removed(
 426         "if_let_redundant_pattern_matching",
 427         "this lint has been changed to redundant_pattern_matching",
 428     );
 429     store.register_removed(
 430         "unsafe_vector_initialization",
 431         "the replacement suggested by this lint had substantially different behavior",
 432     );
 433     // end deprecated lints, do not remove this comment, it’s used in `update_lints`
 434
 435     reg.register_late_lint_pass(box serde_api::SerdeAPI);
 436     reg.register_early_lint_pass(box utils::internal_lints::ClippyLintsInternal);
 437     reg.register_late_lint_pass(box utils::internal_lints::CompilerLintFunctions::new());
 438     reg.register_late_lint_pass(box utils::internal_lints::LintWithoutLintPass::default());
 439     reg.register_late_lint_pass(box utils::internal_lints::OuterExpnInfoPass);
 440     reg.register_late_lint_pass(box utils::inspector::DeepCodeInspector);
 441     reg.register_late_lint_pass(box utils::author::Author);
 442     reg.register_late_lint_pass(box types::Types);
 443     reg.register_late_lint_pass(box booleans::NonminimalBool);
 444     reg.register_late_lint_pass(box eq_op::EqOp);
 445     reg.register_early_lint_pass(box enum_variants::EnumVariantNames::new(conf.enum_variant_name_threshold));
 446     reg.register_late_lint_pass(box enum_glob_use::EnumGlobUse);
 447     reg.register_late_lint_pass(box enum_clike::UnportableVariant);
 448     reg.register_late_lint_pass(box excessive_precision::ExcessivePrecision);
 449     reg.register_late_lint_pass(box bit_mask::BitMask::new(conf.verbose_bit_mask_threshold));
 450     reg.register_late_lint_pass(box ptr::Ptr);
 451     reg.register_late_lint_pass(box needless_bool::NeedlessBool);
 452     reg.register_late_lint_pass(box needless_bool::BoolComparison);
 453     reg.register_late_lint_pass(box approx_const::ApproxConstant);
 454     reg.register_late_lint_pass(box misc::MiscLints);
 455     reg.register_early_lint_pass(box precedence::Precedence);
 456     reg.register_early_lint_pass(box needless_continue::NeedlessContinue);
 457     reg.register_late_lint_pass(box eta_reduction::EtaReduction);
 458     reg.register_late_lint_pass(box identity_op::IdentityOp);
 459     reg.register_late_lint_pass(box erasing_op::ErasingOp);
 460     reg.register_early_lint_pass(box items_after_statements::ItemsAfterStatements);
 461     reg.register_late_lint_pass(box mut_mut::MutMut);
 462     reg.register_late_lint_pass(box mut_reference::UnnecessaryMutPassed);
 463     reg.register_late_lint_pass(box len_zero::LenZero);
 464     reg.register_late_lint_pass(box attrs::Attributes);
 465     reg.register_early_lint_pass(box collapsible_if::CollapsibleIf);
 466     reg.register_late_lint_pass(box block_in_if_condition::BlockInIfCondition);
 467     reg.register_late_lint_pass(box unicode::Unicode);
 468     reg.register_late_lint_pass(box strings::StringAdd);
 469     reg.register_early_lint_pass(box returns::Return);
 470     reg.register_late_lint_pass(box implicit_return::ImplicitReturn);
 471     reg.register_late_lint_pass(box methods::Methods);
 472     reg.register_late_lint_pass(box map_clone::MapClone);
 473     reg.register_late_lint_pass(box shadow::Shadow);
 474     reg.register_late_lint_pass(box types::LetUnitValue);
 475     reg.register_late_lint_pass(box types::UnitCmp);
 476     reg.register_late_lint_pass(box loops::Loops);
 477     reg.register_late_lint_pass(box main_recursion::MainRecursion::default());
 478     reg.register_late_lint_pass(box lifetimes::Lifetimes);
 479     reg.register_late_lint_pass(box entry::HashMapPass);
 480     reg.register_late_lint_pass(box ranges::Ranges);
 481     reg.register_late_lint_pass(box types::Casts);
 482     reg.register_late_lint_pass(box types::TypeComplexity::new(conf.type_complexity_threshold));
 483     reg.register_late_lint_pass(box matches::Matches);
 484     reg.register_late_lint_pass(box minmax::MinMaxPass);
 485     reg.register_late_lint_pass(box open_options::OpenOptions);
 486     reg.register_late_lint_pass(box zero_div_zero::ZeroDiv);
 487     reg.register_late_lint_pass(box mutex_atomic::Mutex);
 488     reg.register_late_lint_pass(box needless_update::NeedlessUpdate);
 489     reg.register_late_lint_pass(box needless_borrow::NeedlessBorrow::default());
 490     reg.register_late_lint_pass(box needless_borrowed_ref::NeedlessBorrowedRef);
 491     reg.register_late_lint_pass(box no_effect::NoEffect);
 492     reg.register_late_lint_pass(box temporary_assignment::TemporaryAssignment);
 493     reg.register_late_lint_pass(box transmute::Transmute);
 494     reg.register_late_lint_pass(
 495         box cognitive_complexity::CognitiveComplexity::new(conf.cognitive_complexity_threshold)
 496     );
 497     reg.register_late_lint_pass(box escape::BoxedLocal{too_large_for_stack: conf.too_large_for_stack});
 498     reg.register_early_lint_pass(box misc_early::MiscEarlyLints);
 499     reg.register_late_lint_pass(box panic_unimplemented::PanicUnimplemented);
 500     reg.register_late_lint_pass(box strings::StringLitAsBytes);
 501     reg.register_late_lint_pass(box derive::Derive);
 502     reg.register_late_lint_pass(box types::CharLitAsU8);
 503     reg.register_late_lint_pass(box vec::UselessVec);
 504     reg.register_late_lint_pass(box drop_bounds::DropBounds);
 505     reg.register_late_lint_pass(box get_last_with_len::GetLastWithLen);
 506     reg.register_late_lint_pass(box drop_forget_ref::DropForgetRef);
 507     reg.register_late_lint_pass(box empty_enum::EmptyEnum);
 508     reg.register_late_lint_pass(box types::AbsurdExtremeComparisons);
 509     reg.register_late_lint_pass(box types::InvalidUpcastComparisons);
 510     reg.register_late_lint_pass(box regex::Regex::default());
 511     reg.register_late_lint_pass(box copies::CopyAndPaste);
 512     reg.register_late_lint_pass(box copy_iterator::CopyIterator);
 513     reg.register_late_lint_pass(box format::UselessFormat);
 514     reg.register_early_lint_pass(box formatting::Formatting);
 515     reg.register_late_lint_pass(box swap::Swap);
 516     reg.register_early_lint_pass(box if_not_else::IfNotElse);
 517     reg.register_early_lint_pass(box else_if_without_else::ElseIfWithoutElse);
 518     reg.register_early_lint_pass(box int_plus_one::IntPlusOne);
 519     reg.register_late_lint_pass(box overflow_check_conditional::OverflowCheckConditional);
 520     reg.register_late_lint_pass(box unused_label::UnusedLabel);
 521     reg.register_late_lint_pass(box new_without_default::NewWithoutDefault::default());
 522     reg.register_late_lint_pass(box blacklisted_name::BlacklistedName::new(
 523             conf.blacklisted_names.iter().cloned().collect()
 524     ));
 525     reg.register_late_lint_pass(box functions::Functions::new(conf.too_many_arguments_threshold, conf.too_many_lines_threshold));
 526     reg.register_early_lint_pass(box doc::DocMarkdown::new(conf.doc_valid_idents.iter().cloned().collect()));
 527     reg.register_late_lint_pass(box neg_multiply::NegMultiply);
 528     reg.register_early_lint_pass(box unsafe_removed_from_name::UnsafeNameRemoval);
 529     reg.register_late_lint_pass(box mem_discriminant::MemDiscriminant);
 530     reg.register_late_lint_pass(box mem_forget::MemForget);
 531     reg.register_late_lint_pass(box mem_replace::MemReplace);
 532     reg.register_late_lint_pass(box arithmetic::Arithmetic::default());
 533     reg.register_late_lint_pass(box assign_ops::AssignOps);
 534     reg.register_late_lint_pass(box let_if_seq::LetIfSeq);
 535     reg.register_late_lint_pass(box eval_order_dependence::EvalOrderDependence);
 536     reg.register_late_lint_pass(box missing_doc::MissingDoc::new());
 537     reg.register_late_lint_pass(box missing_inline::MissingInline);
 538     reg.register_late_lint_pass(box ok_if_let::OkIfLet);
 539     reg.register_late_lint_pass(box redundant_pattern_matching::RedundantPatternMatching);
 540     reg.register_late_lint_pass(box partialeq_ne_impl::PartialEqNeImpl);
 541     reg.register_early_lint_pass(box reference::DerefAddrOf);
 542     reg.register_early_lint_pass(box reference::RefInDeref);
 543     reg.register_early_lint_pass(box double_parens::DoubleParens);
 544     reg.register_late_lint_pass(box unused_io_amount::UnusedIoAmount);
 545     reg.register_late_lint_pass(box large_enum_variant::LargeEnumVariant::new(conf.enum_variant_size_threshold));
 546     reg.register_late_lint_pass(box explicit_write::ExplicitWrite);
 547     reg.register_late_lint_pass(box needless_pass_by_value::NeedlessPassByValue);
 548     reg.register_late_lint_pass(box trivially_copy_pass_by_ref::TriviallyCopyPassByRef::new(
 549             conf.trivial_copy_size_limit,
 550             &reg.sess.target,
 551     ));
 552     reg.register_early_lint_pass(box literal_representation::LiteralDigitGrouping);
 553     reg.register_early_lint_pass(box literal_representation::DecimalLiteralRepresentation::new(
 554             conf.literal_representation_threshold
 555     ));
 556     reg.register_late_lint_pass(box try_err::TryErr);
 557     reg.register_late_lint_pass(box use_self::UseSelf);
 558     reg.register_late_lint_pass(box bytecount::ByteCount);
 559     reg.register_late_lint_pass(box infinite_iter::InfiniteIter);
 560     reg.register_late_lint_pass(box inline_fn_without_body::InlineFnWithoutBody);
 561     reg.register_late_lint_pass(box invalid_ref::InvalidRef);
 562     reg.register_late_lint_pass(box identity_conversion::IdentityConversion::default());
 563     reg.register_late_lint_pass(box types::ImplicitHasher);
 564     reg.register_early_lint_pass(box redundant_static_lifetimes::RedundantStaticLifetimes);
 565     reg.register_late_lint_pass(box fallible_impl_from::FallibleImplFrom);
 566     reg.register_late_lint_pass(box replace_consts::ReplaceConsts);
 567     reg.register_late_lint_pass(box types::UnitArg);
 568     reg.register_late_lint_pass(box double_comparison::DoubleComparisons);
 569     reg.register_late_lint_pass(box question_mark::QuestionMark);
 570     reg.register_late_lint_pass(box suspicious_trait_impl::SuspiciousImpl);
 571     reg.register_early_lint_pass(box cargo_common_metadata::CargoCommonMetadata);
 572     reg.register_early_lint_pass(box multiple_crate_versions::MultipleCrateVersions);
 573     reg.register_early_lint_pass(box wildcard_dependencies::WildcardDependencies);
 574     reg.register_late_lint_pass(box map_unit_fn::MapUnit);
 575     reg.register_late_lint_pass(box infallible_destructuring_match::InfallibleDestructingMatch);
 576     reg.register_late_lint_pass(box inherent_impl::MultipleInherentImpl::default());
 577     reg.register_late_lint_pass(box neg_cmp_op_on_partial_ord::NoNegCompOpForPartialOrd);
 578     reg.register_late_lint_pass(box unwrap::Unwrap);
 579     reg.register_late_lint_pass(box duration_subsec::DurationSubsec);
 580     reg.register_late_lint_pass(box default_trait_access::DefaultTraitAccess);
 581     reg.register_late_lint_pass(box indexing_slicing::IndexingSlicing);
 582     reg.register_late_lint_pass(box non_copy_const::NonCopyConst);
 583     reg.register_late_lint_pass(box ptr_offset_with_cast::PtrOffsetWithCast);
 584     reg.register_late_lint_pass(box redundant_clone::RedundantClone);
 585     reg.register_late_lint_pass(box slow_vector_initialization::SlowVectorInit);
 586     reg.register_late_lint_pass(box types::RefToMut);
 587     reg.register_late_lint_pass(box assertions_on_constants::AssertionsOnConstants);
 588     reg.register_late_lint_pass(box missing_const_for_fn::MissingConstForFn);
 589     reg.register_late_lint_pass(box transmuting_null::TransmutingNull);
 590     reg.register_late_lint_pass(box path_buf_push_overwrite::PathBufPushOverwrite);
 591     reg.register_late_lint_pass(box checked_conversions::CheckedConversions);
 592     reg.register_late_lint_pass(box integer_division::IntegerDivision);
 593     reg.register_late_lint_pass(box inherent_to_string::InherentToString);
 594     reg.register_late_lint_pass(box trait_bounds::TraitBounds);
 595
 596     reg.register_lint_group("clippy::restriction", Some("clippy_restriction"), vec![
 597         arithmetic::FLOAT_ARITHMETIC,
 598         arithmetic::INTEGER_ARITHMETIC,
 599         dbg_macro::DBG_MACRO,
 600         else_if_without_else::ELSE_IF_WITHOUT_ELSE,
 601         implicit_return::IMPLICIT_RETURN,
 602         indexing_slicing::INDEXING_SLICING,
 603         inherent_impl::MULTIPLE_INHERENT_IMPL,
 604         integer_division::INTEGER_DIVISION,
 605         literal_representation::DECIMAL_LITERAL_REPRESENTATION,
 606         matches::WILDCARD_ENUM_MATCH_ARM,
 607         mem_forget::MEM_FORGET,
 608         methods::CLONE_ON_REF_PTR,
 609         methods::GET_UNWRAP,
 610         methods::OPTION_UNWRAP_USED,
 611         methods::RESULT_UNWRAP_USED,
 612         methods::WRONG_PUB_SELF_CONVENTION,
 613         misc::FLOAT_CMP_CONST,
 614         missing_doc::MISSING_DOCS_IN_PRIVATE_ITEMS,
 615         missing_inline::MISSING_INLINE_IN_PUBLIC_ITEMS,
 616         panic_unimplemented::UNIMPLEMENTED,
 617         shadow::SHADOW_REUSE,
 618         shadow::SHADOW_SAME,
 619         strings::STRING_ADD,
 620         write::PRINT_STDOUT,
 621         write::USE_DEBUG,
 622     ]);
 623
 624     reg.register_lint_group("clippy::pedantic", Some("clippy_pedantic"), vec![
 625         attrs::INLINE_ALWAYS,
 626         checked_conversions::CHECKED_CONVERSIONS,
 627         copies::MATCH_SAME_ARMS,
 628         copy_iterator::COPY_ITERATOR,
 629         default_trait_access::DEFAULT_TRAIT_ACCESS,
 630         derive::EXPL_IMPL_CLONE_ON_COPY,
 631         doc::DOC_MARKDOWN,
 632         empty_enum::EMPTY_ENUM,
 633         enum_glob_use::ENUM_GLOB_USE,
 634         enum_variants::MODULE_NAME_REPETITIONS,
 635         enum_variants::PUB_ENUM_VARIANT_NAMES,
 636         eta_reduction::REDUNDANT_CLOSURE_FOR_METHOD_CALLS,
 637         functions::TOO_MANY_LINES,
 638         if_not_else::IF_NOT_ELSE,
 639         infinite_iter::MAYBE_INFINITE_ITER,
 640         items_after_statements::ITEMS_AFTER_STATEMENTS,
 641         literal_representation::LARGE_DIGIT_GROUPS,
 642         loops::EXPLICIT_INTO_ITER_LOOP,
 643         loops::EXPLICIT_ITER_LOOP,
 644         matches::SINGLE_MATCH_ELSE,
 645         methods::FILTER_MAP,
 646         methods::FILTER_MAP_NEXT,
 647         methods::FIND_MAP,
 648         methods::MAP_FLATTEN,
 649         methods::OPTION_MAP_UNWRAP_OR,
 650         methods::OPTION_MAP_UNWRAP_OR_ELSE,
 651         methods::RESULT_MAP_UNWRAP_OR_ELSE,
 652         misc::USED_UNDERSCORE_BINDING,
 653         misc_early::UNSEPARATED_LITERAL_SUFFIX,
 654         mut_mut::MUT_MUT,
 655         needless_continue::NEEDLESS_CONTINUE,
 656         needless_pass_by_value::NEEDLESS_PASS_BY_VALUE,
 657         non_expressive_names::SIMILAR_NAMES,
 658         replace_consts::REPLACE_CONSTS,
 659         shadow::SHADOW_UNRELATED,
 660         strings::STRING_ADD_ASSIGN,
 661         types::CAST_POSSIBLE_TRUNCATION,
 662         types::CAST_POSSIBLE_WRAP,
 663         types::CAST_PRECISION_LOSS,
 664         types::CAST_SIGN_LOSS,
 665         types::INVALID_UPCAST_COMPARISONS,
 666         types::LINKEDLIST,
 667         unicode::NON_ASCII_LITERAL,
 668         unicode::UNICODE_NOT_NFC,
 669         use_self::USE_SELF,
 670     ]);
 671
 672     reg.register_lint_group("clippy::internal", Some("clippy_internal"), vec![
 673         utils::internal_lints::CLIPPY_LINTS_INTERNAL,
 674         utils::internal_lints::COMPILER_LINT_FUNCTIONS,
 675         utils::internal_lints::LINT_WITHOUT_LINT_PASS,
 676         utils::internal_lints::OUTER_EXPN_EXPN_INFO,
 677     ]);
 678
 679     reg.register_lint_group("clippy::all", Some("clippy"), vec![
 680         approx_const::APPROX_CONSTANT,
 681         assertions_on_constants::ASSERTIONS_ON_CONSTANTS,
 682         assign_ops::ASSIGN_OP_PATTERN,
 683         assign_ops::MISREFACTORED_ASSIGN_OP,
 684         attrs::DEPRECATED_CFG_ATTR,
 685         attrs::DEPRECATED_SEMVER,
 686         attrs::UNKNOWN_CLIPPY_LINTS,
 687         attrs::USELESS_ATTRIBUTE,
 688         bit_mask::BAD_BIT_MASK,
 689         bit_mask::INEFFECTIVE_BIT_MASK,
 690         bit_mask::VERBOSE_BIT_MASK,
 691         blacklisted_name::BLACKLISTED_NAME,
 692         block_in_if_condition::BLOCK_IN_IF_CONDITION_EXPR,
 693         block_in_if_condition::BLOCK_IN_IF_CONDITION_STMT,
 694         booleans::LOGIC_BUG,
 695         booleans::NONMINIMAL_BOOL,
 696         bytecount::NAIVE_BYTECOUNT,
 697         cognitive_complexity::COGNITIVE_COMPLEXITY,
 698         collapsible_if::COLLAPSIBLE_IF,
 699         copies::IFS_SAME_COND,
 700         copies::IF_SAME_THEN_ELSE,
 701         derive::DERIVE_HASH_XOR_EQ,
 702         double_comparison::DOUBLE_COMPARISONS,
 703         double_parens::DOUBLE_PARENS,
 704         drop_bounds::DROP_BOUNDS,
 705         drop_forget_ref::DROP_COPY,
 706         drop_forget_ref::DROP_REF,
 707         drop_forget_ref::FORGET_COPY,
 708         drop_forget_ref::FORGET_REF,
 709         duration_subsec::DURATION_SUBSEC,
 710         entry::MAP_ENTRY,
 711         enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT,
 712         enum_variants::ENUM_VARIANT_NAMES,
 713         enum_variants::MODULE_INCEPTION,
 714         eq_op::EQ_OP,
 715         eq_op::OP_REF,
 716         erasing_op::ERASING_OP,
 717         escape::BOXED_LOCAL,
 718         eta_reduction::REDUNDANT_CLOSURE,
 719         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
 720         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
 721         excessive_precision::EXCESSIVE_PRECISION,
 722         explicit_write::EXPLICIT_WRITE,
 723         format::USELESS_FORMAT,
 724         formatting::POSSIBLE_MISSING_COMMA,
 725         formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
 726         formatting::SUSPICIOUS_ELSE_FORMATTING,
 727         functions::NOT_UNSAFE_PTR_ARG_DEREF,
 728         functions::TOO_MANY_ARGUMENTS,
 729         get_last_with_len::GET_LAST_WITH_LEN,
 730         identity_conversion::IDENTITY_CONVERSION,
 731         identity_op::IDENTITY_OP,
 732         indexing_slicing::OUT_OF_BOUNDS_INDEXING,
 733         infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
 734         infinite_iter::INFINITE_ITER,
 735         inherent_to_string::INHERENT_TO_STRING,
 736         inherent_to_string::INHERENT_TO_STRING_SHADOW_DISPLAY,
 737         inline_fn_without_body::INLINE_FN_WITHOUT_BODY,
 738         int_plus_one::INT_PLUS_ONE,
 739         invalid_ref::INVALID_REF,
 740         large_enum_variant::LARGE_ENUM_VARIANT,
 741         len_zero::LEN_WITHOUT_IS_EMPTY,
 742         len_zero::LEN_ZERO,
 743         let_if_seq::USELESS_LET_IF_SEQ,
 744         lifetimes::EXTRA_UNUSED_LIFETIMES,
 745         lifetimes::NEEDLESS_LIFETIMES,
 746         literal_representation::INCONSISTENT_DIGIT_GROUPING,
 747         literal_representation::MISTYPED_LITERAL_SUFFIXES,
 748         literal_representation::UNREADABLE_LITERAL,
 749         loops::EMPTY_LOOP,
 750         loops::EXPLICIT_COUNTER_LOOP,
 751         loops::FOR_KV_MAP,
 752         loops::FOR_LOOP_OVER_OPTION,
 753         loops::FOR_LOOP_OVER_RESULT,
 754         loops::ITER_NEXT_LOOP,
 755         loops::MANUAL_MEMCPY,
 756         loops::MUT_RANGE_BOUND,
 757         loops::NEEDLESS_COLLECT,
 758         loops::NEEDLESS_RANGE_LOOP,
 759         loops::NEVER_LOOP,
 760         loops::REVERSE_RANGE_LOOP,
 761         loops::UNUSED_COLLECT,
 762         loops::WHILE_IMMUTABLE_CONDITION,
 763         loops::WHILE_LET_LOOP,
 764         loops::WHILE_LET_ON_ITERATOR,
 765         main_recursion::MAIN_RECURSION,
 766         map_clone::MAP_CLONE,
 767         map_unit_fn::OPTION_MAP_UNIT_FN,
 768         map_unit_fn::RESULT_MAP_UNIT_FN,
 769         matches::MATCH_AS_REF,
 770         matches::MATCH_BOOL,
 771         matches::MATCH_OVERLAPPING_ARM,
 772         matches::MATCH_REF_PATS,
 773         matches::MATCH_WILD_ERR_ARM,
 774         matches::SINGLE_MATCH,
 775         mem_discriminant::MEM_DISCRIMINANT_NON_ENUM,
 776         mem_replace::MEM_REPLACE_OPTION_WITH_NONE,
 777         methods::CHARS_LAST_CMP,
 778         methods::CHARS_NEXT_CMP,
 779         methods::CLONE_DOUBLE_REF,
 780         methods::CLONE_ON_COPY,
 781         methods::EXPECT_FUN_CALL,
 782         methods::FILTER_NEXT,
 783         methods::INTO_ITER_ON_ARRAY,
 784         methods::INTO_ITER_ON_REF,
 785         methods::ITER_CLONED_COLLECT,
 786         methods::ITER_NTH,
 787         methods::ITER_SKIP_NEXT,
 788         methods::NEW_RET_NO_SELF,
 789         methods::OK_EXPECT,
 790         methods::OPTION_MAP_OR_NONE,
 791         methods::OR_FUN_CALL,
 792         methods::SEARCH_IS_SOME,
 793         methods::SHOULD_IMPLEMENT_TRAIT,
 794         methods::SINGLE_CHAR_PATTERN,
 795         methods::STRING_EXTEND_CHARS,
 796         methods::TEMPORARY_CSTRING_AS_PTR,
 797         methods::UNNECESSARY_FILTER_MAP,
 798         methods::UNNECESSARY_FOLD,
 799         methods::USELESS_ASREF,
 800         methods::WRONG_SELF_CONVENTION,
 801         minmax::MIN_MAX,
 802         misc::CMP_NAN,
 803         misc::CMP_OWNED,
 804         misc::FLOAT_CMP,
 805         misc::MODULO_ONE,
 806         misc::REDUNDANT_PATTERN,
 807         misc::SHORT_CIRCUIT_STATEMENT,
 808         misc::TOPLEVEL_REF_ARG,
 809         misc::ZERO_PTR,
 810         misc_early::BUILTIN_TYPE_SHADOW,
 811         misc_early::DOUBLE_NEG,
 812         misc_early::DUPLICATE_UNDERSCORE_ARGUMENT,
 813         misc_early::MIXED_CASE_HEX_LITERALS,
 814         misc_early::REDUNDANT_CLOSURE_CALL,
 815         misc_early::UNNEEDED_FIELD_PATTERN,
 816         misc_early::ZERO_PREFIXED_LITERAL,
 817         mut_reference::UNNECESSARY_MUT_PASSED,
 818         mutex_atomic::MUTEX_ATOMIC,
 819         needless_bool::BOOL_COMPARISON,
 820         needless_bool::NEEDLESS_BOOL,
 821         needless_borrowed_ref::NEEDLESS_BORROWED_REFERENCE,
 822         needless_update::NEEDLESS_UPDATE,
 823         neg_cmp_op_on_partial_ord::NEG_CMP_OP_ON_PARTIAL_ORD,
 824         neg_multiply::NEG_MULTIPLY,
 825         new_without_default::NEW_WITHOUT_DEFAULT,
 826         no_effect::NO_EFFECT,
 827         no_effect::UNNECESSARY_OPERATION,
 828         non_copy_const::BORROW_INTERIOR_MUTABLE_CONST,
 829         non_copy_const::DECLARE_INTERIOR_MUTABLE_CONST,
 830         non_expressive_names::JUST_UNDERSCORES_AND_DIGITS,
 831         non_expressive_names::MANY_SINGLE_CHAR_NAMES,
 832         ok_if_let::IF_LET_SOME_RESULT,
 833         open_options::NONSENSICAL_OPEN_OPTIONS,
 834         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
 835         panic_unimplemented::PANIC_PARAMS,
 836         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
 837         precedence::PRECEDENCE,
 838         ptr::CMP_NULL,
 839         ptr::MUT_FROM_REF,
 840         ptr::PTR_ARG,
 841         ptr_offset_with_cast::PTR_OFFSET_WITH_CAST,
 842         question_mark::QUESTION_MARK,
 843         ranges::ITERATOR_STEP_BY_ZERO,
 844         ranges::RANGE_MINUS_ONE,
 845         ranges::RANGE_PLUS_ONE,
 846         ranges::RANGE_ZIP_WITH_LEN,
 847         redundant_field_names::REDUNDANT_FIELD_NAMES,
 848         redundant_pattern_matching::REDUNDANT_PATTERN_MATCHING,
 849         redundant_static_lifetimes::REDUNDANT_STATIC_LIFETIMES,
 850         reference::DEREF_ADDROF,
 851         reference::REF_IN_DEREF,
 852         regex::INVALID_REGEX,
 853         regex::REGEX_MACRO,
 854         regex::TRIVIAL_REGEX,
 855         returns::LET_AND_RETURN,
 856         returns::NEEDLESS_RETURN,
 857         returns::UNUSED_UNIT,
 858         serde_api::SERDE_API_MISUSE,
 859         slow_vector_initialization::SLOW_VECTOR_INITIALIZATION,
 860         strings::STRING_LIT_AS_BYTES,
 861         suspicious_trait_impl::SUSPICIOUS_ARITHMETIC_IMPL,
 862         suspicious_trait_impl::SUSPICIOUS_OP_ASSIGN_IMPL,
 863         swap::ALMOST_SWAPPED,
 864         swap::MANUAL_SWAP,
 865         temporary_assignment::TEMPORARY_ASSIGNMENT,
 866         trait_bounds::TYPE_REPETITION_IN_BOUNDS,
 867         transmute::CROSSPOINTER_TRANSMUTE,
 868         transmute::TRANSMUTE_BYTES_TO_STR,
 869         transmute::TRANSMUTE_INT_TO_BOOL,
 870         transmute::TRANSMUTE_INT_TO_CHAR,
 871         transmute::TRANSMUTE_INT_TO_FLOAT,
 872         transmute::TRANSMUTE_PTR_TO_PTR,
 873         transmute::TRANSMUTE_PTR_TO_REF,
 874         transmute::USELESS_TRANSMUTE,
 875         transmute::WRONG_TRANSMUTE,
 876         transmuting_null::TRANSMUTING_NULL,
 877         trivially_copy_pass_by_ref::TRIVIALLY_COPY_PASS_BY_REF,
 878         try_err::TRY_ERR,
 879         types::ABSURD_EXTREME_COMPARISONS,
 880         types::BORROWED_BOX,
 881         types::BOX_VEC,
 882         types::CAST_LOSSLESS,
 883         types::CAST_PTR_ALIGNMENT,
 884         types::CAST_REF_TO_MUT,
 885         types::CHAR_LIT_AS_U8,
 886         types::FN_TO_NUMERIC_CAST,
 887         types::FN_TO_NUMERIC_CAST_WITH_TRUNCATION,
 888         types::IMPLICIT_HASHER,
 889         types::LET_UNIT_VALUE,
 890         types::OPTION_OPTION,
 891         types::TYPE_COMPLEXITY,
 892         types::UNIT_ARG,
 893         types::UNIT_CMP,
 894         types::UNNECESSARY_CAST,
 895         types::VEC_BOX,
 896         unicode::ZERO_WIDTH_SPACE,
 897         unsafe_removed_from_name::UNSAFE_REMOVED_FROM_NAME,
 898         unused_io_amount::UNUSED_IO_AMOUNT,
 899         unused_label::UNUSED_LABEL,
 900         unwrap::PANICKING_UNWRAP,
 901         unwrap::UNNECESSARY_UNWRAP,
 902         vec::USELESS_VEC,
 903         write::PRINTLN_EMPTY_STRING,
 904         write::PRINT_LITERAL,
 905         write::PRINT_WITH_NEWLINE,
 906         write::WRITELN_EMPTY_STRING,
 907         write::WRITE_LITERAL,
 908         write::WRITE_WITH_NEWLINE,
 909         zero_div_zero::ZERO_DIVIDED_BY_ZERO,
 910     ]);
 911
 912     reg.register_lint_group("clippy::style", Some("clippy_style"), vec![
 913         assertions_on_constants::ASSERTIONS_ON_CONSTANTS,
 914         assign_ops::ASSIGN_OP_PATTERN,
 915         attrs::UNKNOWN_CLIPPY_LINTS,
 916         bit_mask::VERBOSE_BIT_MASK,
 917         blacklisted_name::BLACKLISTED_NAME,
 918         block_in_if_condition::BLOCK_IN_IF_CONDITION_EXPR,
 919         block_in_if_condition::BLOCK_IN_IF_CONDITION_STMT,
 920         collapsible_if::COLLAPSIBLE_IF,
 921         enum_variants::ENUM_VARIANT_NAMES,
 922         enum_variants::MODULE_INCEPTION,
 923         eq_op::OP_REF,
 924         eta_reduction::REDUNDANT_CLOSURE,
 925         excessive_precision::EXCESSIVE_PRECISION,
 926         formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
 927         formatting::SUSPICIOUS_ELSE_FORMATTING,
 928         infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
 929         inherent_to_string::INHERENT_TO_STRING,
 930         len_zero::LEN_WITHOUT_IS_EMPTY,
 931         len_zero::LEN_ZERO,
 932         let_if_seq::USELESS_LET_IF_SEQ,
 933         literal_representation::INCONSISTENT_DIGIT_GROUPING,
 934         literal_representation::UNREADABLE_LITERAL,
 935         loops::EMPTY_LOOP,
 936         loops::FOR_KV_MAP,
 937         loops::NEEDLESS_RANGE_LOOP,
 938         loops::WHILE_LET_ON_ITERATOR,
 939         main_recursion::MAIN_RECURSION,
 940         map_clone::MAP_CLONE,
 941         matches::MATCH_BOOL,
 942         matches::MATCH_OVERLAPPING_ARM,
 943         matches::MATCH_REF_PATS,
 944         matches::MATCH_WILD_ERR_ARM,
 945         matches::SINGLE_MATCH,
 946         mem_replace::MEM_REPLACE_OPTION_WITH_NONE,
 947         methods::CHARS_LAST_CMP,
 948         methods::INTO_ITER_ON_REF,
 949         methods::ITER_CLONED_COLLECT,
 950         methods::ITER_SKIP_NEXT,
 951         methods::NEW_RET_NO_SELF,
 952         methods::OK_EXPECT,
 953         methods::OPTION_MAP_OR_NONE,
 954         methods::SHOULD_IMPLEMENT_TRAIT,
 955         methods::STRING_EXTEND_CHARS,
 956         methods::UNNECESSARY_FOLD,
 957         methods::WRONG_SELF_CONVENTION,
 958         misc::REDUNDANT_PATTERN,
 959         misc::TOPLEVEL_REF_ARG,
 960         misc::ZERO_PTR,
 961         misc_early::BUILTIN_TYPE_SHADOW,
 962         misc_early::DOUBLE_NEG,
 963         misc_early::DUPLICATE_UNDERSCORE_ARGUMENT,
 964         misc_early::MIXED_CASE_HEX_LITERALS,
 965         misc_early::UNNEEDED_FIELD_PATTERN,
 966         mut_reference::UNNECESSARY_MUT_PASSED,
 967         neg_multiply::NEG_MULTIPLY,
 968         new_without_default::NEW_WITHOUT_DEFAULT,
 969         non_expressive_names::JUST_UNDERSCORES_AND_DIGITS,
 970         non_expressive_names::MANY_SINGLE_CHAR_NAMES,
 971         ok_if_let::IF_LET_SOME_RESULT,
 972         panic_unimplemented::PANIC_PARAMS,
 973         ptr::CMP_NULL,
 974         ptr::PTR_ARG,
 975         question_mark::QUESTION_MARK,
 976         redundant_field_names::REDUNDANT_FIELD_NAMES,
 977         redundant_pattern_matching::REDUNDANT_PATTERN_MATCHING,
 978         redundant_static_lifetimes::REDUNDANT_STATIC_LIFETIMES,
 979         regex::REGEX_MACRO,
 980         regex::TRIVIAL_REGEX,
 981         returns::LET_AND_RETURN,
 982         returns::NEEDLESS_RETURN,
 983         returns::UNUSED_UNIT,
 984         strings::STRING_LIT_AS_BYTES,
 985         try_err::TRY_ERR,
 986         types::FN_TO_NUMERIC_CAST,
 987         types::FN_TO_NUMERIC_CAST_WITH_TRUNCATION,
 988         types::IMPLICIT_HASHER,
 989         types::LET_UNIT_VALUE,
 990         unsafe_removed_from_name::UNSAFE_REMOVED_FROM_NAME,
 991         write::PRINTLN_EMPTY_STRING,
 992         write::PRINT_LITERAL,
 993         write::PRINT_WITH_NEWLINE,
 994         write::WRITELN_EMPTY_STRING,
 995         write::WRITE_LITERAL,
 996         write::WRITE_WITH_NEWLINE,
 997     ]);
 998
 999     reg.register_lint_group("clippy::complexity", Some("clippy_complexity"), vec![
1000         assign_ops::MISREFACTORED_ASSIGN_OP,
1001         attrs::DEPRECATED_CFG_ATTR,
1002         booleans::NONMINIMAL_BOOL,
1003         cognitive_complexity::COGNITIVE_COMPLEXITY,
1004         double_comparison::DOUBLE_COMPARISONS,
1005         double_parens::DOUBLE_PARENS,
1006         duration_subsec::DURATION_SUBSEC,
1007         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
1008         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
1009         explicit_write::EXPLICIT_WRITE,
1010         format::USELESS_FORMAT,
1011         functions::TOO_MANY_ARGUMENTS,
1012         get_last_with_len::GET_LAST_WITH_LEN,
1013         identity_conversion::IDENTITY_CONVERSION,
1014         identity_op::IDENTITY_OP,
1015         int_plus_one::INT_PLUS_ONE,
1016         lifetimes::EXTRA_UNUSED_LIFETIMES,
1017         lifetimes::NEEDLESS_LIFETIMES,
1018         loops::EXPLICIT_COUNTER_LOOP,
1019         loops::MUT_RANGE_BOUND,
1020         loops::WHILE_LET_LOOP,
1021         map_unit_fn::OPTION_MAP_UNIT_FN,
1022         map_unit_fn::RESULT_MAP_UNIT_FN,
1023         matches::MATCH_AS_REF,
1024         methods::CHARS_NEXT_CMP,
1025         methods::CLONE_ON_COPY,
1026         methods::FILTER_NEXT,
1027         methods::SEARCH_IS_SOME,
1028         methods::UNNECESSARY_FILTER_MAP,
1029         methods::USELESS_ASREF,
1030         misc::SHORT_CIRCUIT_STATEMENT,
1031         misc_early::REDUNDANT_CLOSURE_CALL,
1032         misc_early::ZERO_PREFIXED_LITERAL,
1033         needless_bool::BOOL_COMPARISON,
1034         needless_bool::NEEDLESS_BOOL,
1035         needless_borrowed_ref::NEEDLESS_BORROWED_REFERENCE,
1036         needless_update::NEEDLESS_UPDATE,
1037         neg_cmp_op_on_partial_ord::NEG_CMP_OP_ON_PARTIAL_ORD,
1038         no_effect::NO_EFFECT,
1039         no_effect::UNNECESSARY_OPERATION,
1040         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
1041         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
1042         precedence::PRECEDENCE,
1043         ptr_offset_with_cast::PTR_OFFSET_WITH_CAST,
1044         ranges::RANGE_MINUS_ONE,
1045         ranges::RANGE_PLUS_ONE,
1046         ranges::RANGE_ZIP_WITH_LEN,
1047         reference::DEREF_ADDROF,
1048         reference::REF_IN_DEREF,
1049         swap::MANUAL_SWAP,
1050         temporary_assignment::TEMPORARY_ASSIGNMENT,
1051         trait_bounds::TYPE_REPETITION_IN_BOUNDS,
1052         transmute::CROSSPOINTER_TRANSMUTE,
1053         transmute::TRANSMUTE_BYTES_TO_STR,
1054         transmute::TRANSMUTE_INT_TO_BOOL,
1055         transmute::TRANSMUTE_INT_TO_CHAR,
1056         transmute::TRANSMUTE_INT_TO_FLOAT,
1057         transmute::TRANSMUTE_PTR_TO_PTR,
1058         transmute::TRANSMUTE_PTR_TO_REF,
1059         transmute::USELESS_TRANSMUTE,
1060         types::BORROWED_BOX,
1061         types::CAST_LOSSLESS,
1062         types::CHAR_LIT_AS_U8,
1063         types::OPTION_OPTION,
1064         types::TYPE_COMPLEXITY,
1065         types::UNIT_ARG,
1066         types::UNNECESSARY_CAST,
1067         types::VEC_BOX,
1068         unused_label::UNUSED_LABEL,
1069         unwrap::UNNECESSARY_UNWRAP,
1070         zero_div_zero::ZERO_DIVIDED_BY_ZERO,
1071     ]);
1072
1073     reg.register_lint_group("clippy::correctness", Some("clippy_correctness"), vec![
1074         approx_const::APPROX_CONSTANT,
1075         attrs::DEPRECATED_SEMVER,
1076         attrs::USELESS_ATTRIBUTE,
1077         bit_mask::BAD_BIT_MASK,
1078         bit_mask::INEFFECTIVE_BIT_MASK,
1079         booleans::LOGIC_BUG,
1080         copies::IFS_SAME_COND,
1081         copies::IF_SAME_THEN_ELSE,
1082         derive::DERIVE_HASH_XOR_EQ,
1083         drop_bounds::DROP_BOUNDS,
1084         drop_forget_ref::DROP_COPY,
1085         drop_forget_ref::DROP_REF,
1086         drop_forget_ref::FORGET_COPY,
1087         drop_forget_ref::FORGET_REF,
1088         enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT,
1089         eq_op::EQ_OP,
1090         erasing_op::ERASING_OP,
1091         formatting::POSSIBLE_MISSING_COMMA,
1092         functions::NOT_UNSAFE_PTR_ARG_DEREF,
1093         indexing_slicing::OUT_OF_BOUNDS_INDEXING,
1094         infinite_iter::INFINITE_ITER,
1095         inherent_to_string::INHERENT_TO_STRING_SHADOW_DISPLAY,
1096         inline_fn_without_body::INLINE_FN_WITHOUT_BODY,
1097         invalid_ref::INVALID_REF,
1098         literal_representation::MISTYPED_LITERAL_SUFFIXES,
1099         loops::FOR_LOOP_OVER_OPTION,
1100         loops::FOR_LOOP_OVER_RESULT,
1101         loops::ITER_NEXT_LOOP,
1102         loops::NEVER_LOOP,
1103         loops::REVERSE_RANGE_LOOP,
1104         loops::WHILE_IMMUTABLE_CONDITION,
1105         mem_discriminant::MEM_DISCRIMINANT_NON_ENUM,
1106         methods::CLONE_DOUBLE_REF,
1107         methods::INTO_ITER_ON_ARRAY,
1108         methods::TEMPORARY_CSTRING_AS_PTR,
1109         minmax::MIN_MAX,
1110         misc::CMP_NAN,
1111         misc::FLOAT_CMP,
1112         misc::MODULO_ONE,
1113         non_copy_const::BORROW_INTERIOR_MUTABLE_CONST,
1114         non_copy_const::DECLARE_INTERIOR_MUTABLE_CONST,
1115         open_options::NONSENSICAL_OPEN_OPTIONS,
1116         ptr::MUT_FROM_REF,
1117         ranges::ITERATOR_STEP_BY_ZERO,
1118         regex::INVALID_REGEX,
1119         serde_api::SERDE_API_MISUSE,
1120         suspicious_trait_impl::SUSPICIOUS_ARITHMETIC_IMPL,
1121         suspicious_trait_impl::SUSPICIOUS_OP_ASSIGN_IMPL,
1122         swap::ALMOST_SWAPPED,
1123         transmute::WRONG_TRANSMUTE,
1124         transmuting_null::TRANSMUTING_NULL,
1125         types::ABSURD_EXTREME_COMPARISONS,
1126         types::CAST_PTR_ALIGNMENT,
1127         types::CAST_REF_TO_MUT,
1128         types::UNIT_CMP,
1129         unicode::ZERO_WIDTH_SPACE,
1130         unused_io_amount::UNUSED_IO_AMOUNT,
1131         unwrap::PANICKING_UNWRAP,
1132     ]);
1133
1134     reg.register_lint_group("clippy::perf", Some("clippy_perf"), vec![
1135         bytecount::NAIVE_BYTECOUNT,
1136         entry::MAP_ENTRY,
1137         escape::BOXED_LOCAL,
1138         large_enum_variant::LARGE_ENUM_VARIANT,
1139         loops::MANUAL_MEMCPY,
1140         loops::NEEDLESS_COLLECT,
1141         loops::UNUSED_COLLECT,
1142         methods::EXPECT_FUN_CALL,
1143         methods::ITER_NTH,
1144         methods::OR_FUN_CALL,
1145         methods::SINGLE_CHAR_PATTERN,
1146         misc::CMP_OWNED,
1147         mutex_atomic::MUTEX_ATOMIC,
1148         slow_vector_initialization::SLOW_VECTOR_INITIALIZATION,
1149         trivially_copy_pass_by_ref::TRIVIALLY_COPY_PASS_BY_REF,
1150         types::BOX_VEC,
1151         vec::USELESS_VEC,
1152     ]);
1153
1154     reg.register_lint_group("clippy::cargo", Some("clippy_cargo"), vec![
1155         cargo_common_metadata::CARGO_COMMON_METADATA,
1156         multiple_crate_versions::MULTIPLE_CRATE_VERSIONS,
1157         wildcard_dependencies::WILDCARD_DEPENDENCIES,
1158     ]);
1159
1160     reg.register_lint_group("clippy::nursery", Some("clippy_nursery"), vec![
1161         attrs::EMPTY_LINE_AFTER_OUTER_ATTR,
1162         fallible_impl_from::FALLIBLE_IMPL_FROM,
1163         missing_const_for_fn::MISSING_CONST_FOR_FN,
1164         mutex_atomic::MUTEX_INTEGER,
1165         needless_borrow::NEEDLESS_BORROW,
1166         path_buf_push_overwrite::PATH_BUF_PUSH_OVERWRITE,
1167         redundant_clone::REDUNDANT_CLONE,
1168     ]);
1169 }
1170
1171 /// Register renamed lints.
1172 ///
1173 /// Used in `./src/driver.rs`.
1174 pub fn register_renamed(ls: &mut rustc::lint::LintStore) {
1175     ls.register_renamed("clippy::stutter", "clippy::module_name_repetitions");
1176     ls.register_renamed("clippy::new_without_default_derive", "clippy::new_without_default");
1177     ls.register_renamed("clippy::cyclomatic_complexity", "clippy::cognitive_complexity");
1178     ls.register_renamed("clippy::const_static_lifetime", "clippy::redundant_static_lifetimes");
1179 }
1180
1181 // only exists to let the dogfood integration test works.
1182 // Don't run clippy as an executable directly
1183 #[allow(dead_code)]
1184 fn main() {
1185     panic!("Please use the cargo-clippy executable");
1186 }