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, clippy::must_use_candidate)]
  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_driver;
  27 #[allow(unused_extern_crates)]
  28 extern crate rustc_errors;
  29 #[allow(unused_extern_crates)]
  30 extern crate rustc_index;
  31 #[allow(unused_extern_crates)]
  32 extern crate rustc_mir;
  33 #[allow(unused_extern_crates)]
  34 extern crate rustc_target;
  35 #[allow(unused_extern_crates)]
  36 extern crate rustc_typeck;
  37 #[allow(unused_extern_crates)]
  38 extern crate syntax;
  39 #[allow(unused_extern_crates)]
  40 extern crate syntax_expand;
  41 #[allow(unused_extern_crates)]
  42 extern crate syntax_pos;
  43
  44 use toml;
  45
  46 /// Macro used to declare a Clippy lint.
  47 ///
  48 /// Every lint declaration consists of 4 parts:
  49 ///
  50 /// 1. The documentation, which is used for the website
  51 /// 2. The `LINT_NAME`. See [lint naming][lint_naming] on lint naming conventions.
  52 /// 3. The `lint_level`, which is a mapping from *one* of our lint groups to `Allow`, `Warn` or
  53 ///    `Deny`. The lint level here has nothing to do with what lint groups the lint is a part of.
  54 /// 4. The `description` that contains a short explanation on what's wrong with code where the
  55 ///    lint is triggered.
  56 ///
  57 /// Currently the categories `style`, `correctness`, `complexity` and `perf` are enabled by default.
  58 /// As said in the README.md of this repository, if the lint level mapping changes, please update
  59 /// README.md.
  60 ///
  61 /// # Example
  62 ///
  63 /// ```
  64 /// # #![feature(rustc_private)]
  65 /// # #[allow(unused_extern_crates)]
  66 /// # extern crate rustc;
  67 /// # #[macro_use]
  68 /// # use clippy_lints::declare_clippy_lint;
  69 /// use rustc::declare_tool_lint;
  70 ///
  71 /// declare_clippy_lint! {
  72 ///     /// **What it does:** Checks for ... (describe what the lint matches).
  73 ///     ///
  74 ///     /// **Why is this bad?** Supply the reason for linting the code.
  75 ///     ///
  76 ///     /// **Known problems:** None. (Or describe where it could go wrong.)
  77 ///     ///
  78 ///     /// **Example:**
  79 ///     ///
  80 ///     /// ```rust
  81 ///     /// // Bad
  82 ///     /// Insert a short example of code that triggers the lint
  83 ///     ///
  84 ///     /// // Good
  85 ///     /// Insert a short example of improved code that doesn't trigger the lint
  86 ///     /// ```
  87 ///     pub LINT_NAME,
  88 ///     pedantic,
  89 ///     "description"
  90 /// }
  91 /// ```
  92 /// [lint_naming]: https://rust-lang.github.io/rfcs/0344-conventions-galore.html#lints
  93 #[macro_export]
  94 macro_rules! declare_clippy_lint {
  95     { $(#[$attr:meta])* pub $name:tt, style, $description:tt } => {
  96         declare_tool_lint! {
  97             $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
  98         }
  99     };
 100     { $(#[$attr:meta])* pub $name:tt, correctness, $description:tt } => {
 101         declare_tool_lint! {
 102             $(#[$attr])* pub clippy::$name, Deny, $description, report_in_external_macro: true
 103         }
 104     };
 105     { $(#[$attr:meta])* pub $name:tt, complexity, $description:tt } => {
 106         declare_tool_lint! {
 107             $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
 108         }
 109     };
 110     { $(#[$attr:meta])* pub $name:tt, perf, $description:tt } => {
 111         declare_tool_lint! {
 112             $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
 113         }
 114     };
 115     { $(#[$attr:meta])* pub $name:tt, pedantic, $description:tt } => {
 116         declare_tool_lint! {
 117             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
 118         }
 119     };
 120     { $(#[$attr:meta])* pub $name:tt, restriction, $description:tt } => {
 121         declare_tool_lint! {
 122             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
 123         }
 124     };
 125     { $(#[$attr:meta])* pub $name:tt, cargo, $description:tt } => {
 126         declare_tool_lint! {
 127             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
 128         }
 129     };
 130     { $(#[$attr:meta])* pub $name:tt, nursery, $description:tt } => {
 131         declare_tool_lint! {
 132             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
 133         }
 134     };
 135     { $(#[$attr:meta])* pub $name:tt, internal, $description:tt } => {
 136         declare_tool_lint! {
 137             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
 138         }
 139     };
 140     { $(#[$attr:meta])* pub $name:tt, internal_warn, $description:tt } => {
 141         declare_tool_lint! {
 142             $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
 143         }
 144     };
 145 }
 146
 147 mod consts;
 148 #[macro_use]
 149 mod utils;
 150
 151 // begin lints modules, do not remove this comment, it’s used in `update_lints`
 152 pub mod approx_const;
 153 pub mod arithmetic;
 154 pub mod assertions_on_constants;
 155 pub mod assign_ops;
 156 pub mod attrs;
 157 pub mod bit_mask;
 158 pub mod blacklisted_name;
 159 pub mod block_in_if_condition;
 160 pub mod booleans;
 161 pub mod bytecount;
 162 pub mod cargo_common_metadata;
 163 pub mod checked_conversions;
 164 pub mod cognitive_complexity;
 165 pub mod collapsible_if;
 166 pub mod comparison_chain;
 167 pub mod copies;
 168 pub mod copy_iterator;
 169 pub mod dbg_macro;
 170 pub mod default_trait_access;
 171 pub mod derive;
 172 pub mod doc;
 173 pub mod double_comparison;
 174 pub mod double_parens;
 175 pub mod drop_bounds;
 176 pub mod drop_forget_ref;
 177 pub mod duration_subsec;
 178 pub mod else_if_without_else;
 179 pub mod empty_enum;
 180 pub mod entry;
 181 pub mod enum_clike;
 182 pub mod enum_glob_use;
 183 pub mod enum_variants;
 184 pub mod eq_op;
 185 pub mod erasing_op;
 186 pub mod escape;
 187 pub mod eta_reduction;
 188 pub mod eval_order_dependence;
 189 pub mod excessive_precision;
 190 pub mod explicit_write;
 191 pub mod fallible_impl_from;
 192 pub mod format;
 193 pub mod formatting;
 194 pub mod functions;
 195 pub mod get_last_with_len;
 196 pub mod identity_conversion;
 197 pub mod identity_op;
 198 pub mod if_not_else;
 199 pub mod implicit_return;
 200 pub mod indexing_slicing;
 201 pub mod infallible_destructuring_match;
 202 pub mod infinite_iter;
 203 pub mod inherent_impl;
 204 pub mod inherent_to_string;
 205 pub mod inline_fn_without_body;
 206 pub mod int_plus_one;
 207 pub mod integer_division;
 208 pub mod items_after_statements;
 209 pub mod large_enum_variant;
 210 pub mod len_zero;
 211 pub mod let_if_seq;
 212 pub mod lifetimes;
 213 pub mod literal_representation;
 214 pub mod loops;
 215 pub mod main_recursion;
 216 pub mod map_clone;
 217 pub mod map_unit_fn;
 218 pub mod matches;
 219 pub mod mem_discriminant;
 220 pub mod mem_forget;
 221 pub mod mem_replace;
 222 pub mod methods;
 223 pub mod minmax;
 224 pub mod misc;
 225 pub mod misc_early;
 226 pub mod missing_const_for_fn;
 227 pub mod missing_doc;
 228 pub mod missing_inline;
 229 pub mod mul_add;
 230 pub mod multiple_crate_versions;
 231 pub mod mut_mut;
 232 pub mod mut_reference;
 233 pub mod mutex_atomic;
 234 pub mod needless_bool;
 235 pub mod needless_borrow;
 236 pub mod needless_borrowed_ref;
 237 pub mod needless_continue;
 238 pub mod needless_pass_by_value;
 239 pub mod needless_update;
 240 pub mod neg_cmp_op_on_partial_ord;
 241 pub mod neg_multiply;
 242 pub mod new_without_default;
 243 pub mod no_effect;
 244 pub mod non_copy_const;
 245 pub mod non_expressive_names;
 246 pub mod ok_if_let;
 247 pub mod open_options;
 248 pub mod overflow_check_conditional;
 249 pub mod panic_unimplemented;
 250 pub mod partialeq_ne_impl;
 251 pub mod path_buf_push_overwrite;
 252 pub mod precedence;
 253 pub mod ptr;
 254 pub mod ptr_offset_with_cast;
 255 pub mod question_mark;
 256 pub mod ranges;
 257 pub mod redundant_clone;
 258 pub mod redundant_field_names;
 259 pub mod redundant_pattern_matching;
 260 pub mod redundant_static_lifetimes;
 261 pub mod reference;
 262 pub mod regex;
 263 pub mod replace_consts;
 264 pub mod returns;
 265 pub mod serde_api;
 266 pub mod shadow;
 267 pub mod slow_vector_initialization;
 268 pub mod strings;
 269 pub mod suspicious_trait_impl;
 270 pub mod swap;
 271 pub mod temporary_assignment;
 272 pub mod trait_bounds;
 273 pub mod transmute;
 274 pub mod transmuting_null;
 275 pub mod trivially_copy_pass_by_ref;
 276 pub mod try_err;
 277 pub mod types;
 278 pub mod unicode;
 279 pub mod unsafe_removed_from_name;
 280 pub mod unused_io_amount;
 281 pub mod unused_label;
 282 pub mod unused_self;
 283 pub mod unwrap;
 284 pub mod use_self;
 285 pub mod vec;
 286 pub mod wildcard_dependencies;
 287 pub mod write;
 288 pub mod zero_div_zero;
 289 // end lints modules, do not remove this comment, it’s used in `update_lints`
 290
 291 pub use crate::utils::conf::Conf;
 292
 293 mod reexport {
 294     crate use syntax::ast::Name;
 295 }
 296
 297 /// Register all pre expansion lints
 298 ///
 299 /// Pre-expansion lints run before any macro expansion has happened.
 300 ///
 301 /// Note that due to the architecture of the compiler, currently `cfg_attr` attributes on crate
 302 /// level (i.e `#![cfg_attr(...)]`) will still be expanded even when using a pre-expansion pass.
 303 ///
 304 /// Used in `./src/driver.rs`.
 305 pub fn register_pre_expansion_lints(
 306     session: &rustc::session::Session,
 307     store: &mut rustc::lint::LintStore,
 308     conf: &Conf,
 309 ) {
 310     store.register_pre_expansion_pass(Some(session), true, false, box write::Write);
 311     store.register_pre_expansion_pass(
 312         Some(session),
 313         true,
 314         false,
 315         box redundant_field_names::RedundantFieldNames,
 316     );
 317     store.register_pre_expansion_pass(
 318         Some(session),
 319         true,
 320         false,
 321         box non_expressive_names::NonExpressiveNames {
 322             single_char_binding_names_threshold: conf.single_char_binding_names_threshold,
 323         },
 324     );
 325     store.register_pre_expansion_pass(Some(session), true, false, box attrs::DeprecatedCfgAttribute);
 326     store.register_pre_expansion_pass(Some(session), true, false, box dbg_macro::DbgMacro);
 327 }
 328
 329 #[doc(hidden)]
 330 pub fn read_conf(reg: &rustc_driver::plugin::Registry<'_>) -> Conf {
 331     match utils::conf::file_from_args(reg.args()) {
 332         Ok(file_name) => {
 333             // if the user specified a file, it must exist, otherwise default to `clippy.toml` but
 334             // do not require the file to exist
 335             let file_name = if let Some(file_name) = file_name {
 336                 Some(file_name)
 337             } else {
 338                 match utils::conf::lookup_conf_file() {
 339                     Ok(path) => path,
 340                     Err(error) => {
 341                         reg.sess
 342                             .struct_err(&format!("error finding Clippy's configuration file: {}", error))
 343                             .emit();
 344                         None
 345                     },
 346                 }
 347             };
 348
 349             let file_name = file_name.map(|file_name| {
 350                 if file_name.is_relative() {
 351                     reg.sess
 352                         .local_crate_source_file
 353                         .as_ref()
 354                         .and_then(|file| std::path::Path::new(&file).parent().map(std::path::Path::to_path_buf))
 355                         .unwrap_or_default()
 356                         .join(file_name)
 357                 } else {
 358                     file_name
 359                 }
 360             });
 361
 362             let (conf, errors) = utils::conf::read(file_name.as_ref().map(std::convert::AsRef::as_ref));
 363
 364             // all conf errors are non-fatal, we just use the default conf in case of error
 365             for error in errors {
 366                 reg.sess
 367                     .struct_err(&format!(
 368                         "error reading Clippy's configuration file `{}`: {}",
 369                         file_name.as_ref().and_then(|p| p.to_str()).unwrap_or(""),
 370                         error
 371                     ))
 372                     .emit();
 373             }
 374
 375             conf
 376         },
 377         Err((err, span)) => {
 378             reg.sess
 379                 .struct_span_err(span, err)
 380                 .span_note(span, "Clippy will use default configuration")
 381                 .emit();
 382             toml::from_str("").expect("we never error on empty config files")
 383         },
 384     }
 385 }
 386
 387 /// Register all lints and lint groups with the rustc plugin registry
 388 ///
 389 /// Used in `./src/driver.rs`.
 390 #[allow(clippy::too_many_lines)]
 391 #[rustfmt::skip]
 392 pub fn register_plugins(reg: &mut rustc_driver::plugin::Registry<'_>, conf: &Conf) {
 393     let mut store = reg.sess.lint_store.borrow_mut();
 394     register_removed_non_tool_lints(&mut store);
 395
 396     // begin deprecated lints, do not remove this comment, it’s used in `update_lints`
 397     store.register_removed(
 398         "clippy::should_assert_eq",
 399         "`assert!()` will be more flexible with RFC 2011",
 400     );
 401     store.register_removed(
 402         "clippy::extend_from_slice",
 403         "`.extend_from_slice(_)` is a faster way to extend a Vec by a slice",
 404     );
 405     store.register_removed(
 406         "clippy::range_step_by_zero",
 407         "`iterator.step_by(0)` panics nowadays",
 408     );
 409     store.register_removed(
 410         "clippy::unstable_as_slice",
 411         "`Vec::as_slice` has been stabilized in 1.7",
 412     );
 413     store.register_removed(
 414         "clippy::unstable_as_mut_slice",
 415         "`Vec::as_mut_slice` has been stabilized in 1.7",
 416     );
 417     store.register_removed(
 418         "clippy::str_to_string",
 419         "using `str::to_string` is common even today and specialization will likely happen soon",
 420     );
 421     store.register_removed(
 422         "clippy::string_to_string",
 423         "using `string::to_string` is common even today and specialization will likely happen soon",
 424     );
 425     store.register_removed(
 426         "clippy::misaligned_transmute",
 427         "this lint has been split into cast_ptr_alignment and transmute_ptr_to_ptr",
 428     );
 429     store.register_removed(
 430         "clippy::assign_ops",
 431         "using compound assignment operators (e.g., `+=`) is harmless",
 432     );
 433     store.register_removed(
 434         "clippy::if_let_redundant_pattern_matching",
 435         "this lint has been changed to redundant_pattern_matching",
 436     );
 437     store.register_removed(
 438         "clippy::unsafe_vector_initialization",
 439         "the replacement suggested by this lint had substantially different behavior",
 440     );
 441     store.register_removed(
 442         "clippy::invalid_ref",
 443         "superseded by rustc lint `invalid_value`",
 444     );
 445     store.register_removed(
 446         "clippy::unused_collect",
 447         "`collect` has been marked as #[must_use] in rustc and that covers all cases of this lint",
 448     );
 449     // end deprecated lints, do not remove this comment, it’s used in `update_lints`
 450
 451     reg.register_late_lint_pass(box serde_api::SerdeAPI);
 452     reg.register_early_lint_pass(box utils::internal_lints::ClippyLintsInternal);
 453     reg.register_late_lint_pass(box utils::internal_lints::CompilerLintFunctions::new());
 454     reg.register_late_lint_pass(box utils::internal_lints::LintWithoutLintPass::default());
 455     reg.register_late_lint_pass(box utils::internal_lints::OuterExpnDataPass);
 456     reg.register_late_lint_pass(box utils::inspector::DeepCodeInspector);
 457     reg.register_late_lint_pass(box utils::author::Author);
 458     reg.register_late_lint_pass(box types::Types);
 459     reg.register_late_lint_pass(box booleans::NonminimalBool);
 460     reg.register_late_lint_pass(box eq_op::EqOp);
 461     reg.register_early_lint_pass(box enum_variants::EnumVariantNames::new(conf.enum_variant_name_threshold));
 462     reg.register_late_lint_pass(box enum_glob_use::EnumGlobUse);
 463     reg.register_late_lint_pass(box enum_clike::UnportableVariant);
 464     reg.register_late_lint_pass(box excessive_precision::ExcessivePrecision);
 465     reg.register_late_lint_pass(box bit_mask::BitMask::new(conf.verbose_bit_mask_threshold));
 466     reg.register_late_lint_pass(box ptr::Ptr);
 467     reg.register_late_lint_pass(box needless_bool::NeedlessBool);
 468     reg.register_late_lint_pass(box needless_bool::BoolComparison);
 469     reg.register_late_lint_pass(box approx_const::ApproxConstant);
 470     reg.register_late_lint_pass(box misc::MiscLints);
 471     reg.register_early_lint_pass(box precedence::Precedence);
 472     reg.register_early_lint_pass(box needless_continue::NeedlessContinue);
 473     reg.register_late_lint_pass(box eta_reduction::EtaReduction);
 474     reg.register_late_lint_pass(box identity_op::IdentityOp);
 475     reg.register_late_lint_pass(box erasing_op::ErasingOp);
 476     reg.register_early_lint_pass(box items_after_statements::ItemsAfterStatements);
 477     reg.register_late_lint_pass(box mut_mut::MutMut);
 478     reg.register_late_lint_pass(box mut_reference::UnnecessaryMutPassed);
 479     reg.register_late_lint_pass(box len_zero::LenZero);
 480     reg.register_late_lint_pass(box attrs::Attributes);
 481     reg.register_early_lint_pass(box collapsible_if::CollapsibleIf);
 482     reg.register_late_lint_pass(box block_in_if_condition::BlockInIfCondition);
 483     reg.register_late_lint_pass(box unicode::Unicode);
 484     reg.register_late_lint_pass(box strings::StringAdd);
 485     reg.register_early_lint_pass(box returns::Return);
 486     reg.register_late_lint_pass(box implicit_return::ImplicitReturn);
 487     reg.register_late_lint_pass(box methods::Methods);
 488     reg.register_late_lint_pass(box map_clone::MapClone);
 489     reg.register_late_lint_pass(box shadow::Shadow);
 490     reg.register_late_lint_pass(box types::LetUnitValue);
 491     reg.register_late_lint_pass(box types::UnitCmp);
 492     reg.register_late_lint_pass(box loops::Loops);
 493     reg.register_late_lint_pass(box main_recursion::MainRecursion::default());
 494     reg.register_late_lint_pass(box lifetimes::Lifetimes);
 495     reg.register_late_lint_pass(box entry::HashMapPass);
 496     reg.register_late_lint_pass(box ranges::Ranges);
 497     reg.register_late_lint_pass(box types::Casts);
 498     reg.register_late_lint_pass(box types::TypeComplexity::new(conf.type_complexity_threshold));
 499     reg.register_late_lint_pass(box matches::Matches);
 500     reg.register_late_lint_pass(box minmax::MinMaxPass);
 501     reg.register_late_lint_pass(box open_options::OpenOptions);
 502     reg.register_late_lint_pass(box zero_div_zero::ZeroDiv);
 503     reg.register_late_lint_pass(box mutex_atomic::Mutex);
 504     reg.register_late_lint_pass(box needless_update::NeedlessUpdate);
 505     reg.register_late_lint_pass(box needless_borrow::NeedlessBorrow::default());
 506     reg.register_late_lint_pass(box needless_borrowed_ref::NeedlessBorrowedRef);
 507     reg.register_late_lint_pass(box no_effect::NoEffect);
 508     reg.register_late_lint_pass(box temporary_assignment::TemporaryAssignment);
 509     reg.register_late_lint_pass(box transmute::Transmute);
 510     reg.register_late_lint_pass(
 511         box cognitive_complexity::CognitiveComplexity::new(conf.cognitive_complexity_threshold)
 512     );
 513     reg.register_late_lint_pass(box escape::BoxedLocal{too_large_for_stack: conf.too_large_for_stack});
 514     reg.register_early_lint_pass(box misc_early::MiscEarlyLints);
 515     reg.register_late_lint_pass(box panic_unimplemented::PanicUnimplemented);
 516     reg.register_late_lint_pass(box strings::StringLitAsBytes);
 517     reg.register_late_lint_pass(box derive::Derive);
 518     reg.register_late_lint_pass(box types::CharLitAsU8);
 519     reg.register_late_lint_pass(box vec::UselessVec);
 520     reg.register_late_lint_pass(box drop_bounds::DropBounds);
 521     reg.register_late_lint_pass(box get_last_with_len::GetLastWithLen);
 522     reg.register_late_lint_pass(box drop_forget_ref::DropForgetRef);
 523     reg.register_late_lint_pass(box empty_enum::EmptyEnum);
 524     reg.register_late_lint_pass(box types::AbsurdExtremeComparisons);
 525     reg.register_late_lint_pass(box types::InvalidUpcastComparisons);
 526     reg.register_late_lint_pass(box regex::Regex::default());
 527     reg.register_late_lint_pass(box copies::CopyAndPaste);
 528     reg.register_late_lint_pass(box copy_iterator::CopyIterator);
 529     reg.register_late_lint_pass(box format::UselessFormat);
 530     reg.register_early_lint_pass(box formatting::Formatting);
 531     reg.register_late_lint_pass(box swap::Swap);
 532     reg.register_early_lint_pass(box if_not_else::IfNotElse);
 533     reg.register_early_lint_pass(box else_if_without_else::ElseIfWithoutElse);
 534     reg.register_early_lint_pass(box int_plus_one::IntPlusOne);
 535     reg.register_late_lint_pass(box overflow_check_conditional::OverflowCheckConditional);
 536     reg.register_late_lint_pass(box unused_label::UnusedLabel);
 537     reg.register_late_lint_pass(box new_without_default::NewWithoutDefault::default());
 538     reg.register_late_lint_pass(box blacklisted_name::BlacklistedName::new(
 539             conf.blacklisted_names.iter().cloned().collect()
 540     ));
 541     reg.register_late_lint_pass(box functions::Functions::new(conf.too_many_arguments_threshold, conf.too_many_lines_threshold));
 542     reg.register_late_lint_pass(box doc::DocMarkdown::new(conf.doc_valid_idents.iter().cloned().collect()));
 543     reg.register_late_lint_pass(box neg_multiply::NegMultiply);
 544     reg.register_early_lint_pass(box unsafe_removed_from_name::UnsafeNameRemoval);
 545     reg.register_late_lint_pass(box mem_discriminant::MemDiscriminant);
 546     reg.register_late_lint_pass(box mem_forget::MemForget);
 547     reg.register_late_lint_pass(box mem_replace::MemReplace);
 548     reg.register_late_lint_pass(box arithmetic::Arithmetic::default());
 549     reg.register_late_lint_pass(box assign_ops::AssignOps);
 550     reg.register_late_lint_pass(box let_if_seq::LetIfSeq);
 551     reg.register_late_lint_pass(box eval_order_dependence::EvalOrderDependence);
 552     reg.register_late_lint_pass(box missing_doc::MissingDoc::new());
 553     reg.register_late_lint_pass(box missing_inline::MissingInline);
 554     reg.register_late_lint_pass(box ok_if_let::OkIfLet);
 555     reg.register_late_lint_pass(box redundant_pattern_matching::RedundantPatternMatching);
 556     reg.register_late_lint_pass(box partialeq_ne_impl::PartialEqNeImpl);
 557     reg.register_early_lint_pass(box reference::DerefAddrOf);
 558     reg.register_early_lint_pass(box reference::RefInDeref);
 559     reg.register_early_lint_pass(box double_parens::DoubleParens);
 560     reg.register_late_lint_pass(box unused_io_amount::UnusedIoAmount);
 561     reg.register_late_lint_pass(box large_enum_variant::LargeEnumVariant::new(conf.enum_variant_size_threshold));
 562     reg.register_late_lint_pass(box explicit_write::ExplicitWrite);
 563     reg.register_late_lint_pass(box needless_pass_by_value::NeedlessPassByValue);
 564     reg.register_late_lint_pass(box trivially_copy_pass_by_ref::TriviallyCopyPassByRef::new(
 565             conf.trivial_copy_size_limit,
 566             &reg.sess.target,
 567     ));
 568     reg.register_early_lint_pass(box literal_representation::LiteralDigitGrouping);
 569     reg.register_early_lint_pass(box literal_representation::DecimalLiteralRepresentation::new(
 570             conf.literal_representation_threshold
 571     ));
 572     reg.register_late_lint_pass(box try_err::TryErr);
 573     reg.register_late_lint_pass(box use_self::UseSelf);
 574     reg.register_late_lint_pass(box bytecount::ByteCount);
 575     reg.register_late_lint_pass(box infinite_iter::InfiniteIter);
 576     reg.register_late_lint_pass(box inline_fn_without_body::InlineFnWithoutBody);
 577     reg.register_late_lint_pass(box identity_conversion::IdentityConversion::default());
 578     reg.register_late_lint_pass(box types::ImplicitHasher);
 579     reg.register_early_lint_pass(box redundant_static_lifetimes::RedundantStaticLifetimes);
 580     reg.register_late_lint_pass(box fallible_impl_from::FallibleImplFrom);
 581     reg.register_late_lint_pass(box replace_consts::ReplaceConsts);
 582     reg.register_late_lint_pass(box types::UnitArg);
 583     reg.register_late_lint_pass(box double_comparison::DoubleComparisons);
 584     reg.register_late_lint_pass(box question_mark::QuestionMark);
 585     reg.register_late_lint_pass(box suspicious_trait_impl::SuspiciousImpl);
 586     reg.register_early_lint_pass(box cargo_common_metadata::CargoCommonMetadata);
 587     reg.register_early_lint_pass(box multiple_crate_versions::MultipleCrateVersions);
 588     reg.register_early_lint_pass(box wildcard_dependencies::WildcardDependencies);
 589     reg.register_late_lint_pass(box map_unit_fn::MapUnit);
 590     reg.register_late_lint_pass(box infallible_destructuring_match::InfallibleDestructingMatch);
 591     reg.register_late_lint_pass(box inherent_impl::MultipleInherentImpl::default());
 592     reg.register_late_lint_pass(box neg_cmp_op_on_partial_ord::NoNegCompOpForPartialOrd);
 593     reg.register_late_lint_pass(box unwrap::Unwrap);
 594     reg.register_late_lint_pass(box duration_subsec::DurationSubsec);
 595     reg.register_late_lint_pass(box default_trait_access::DefaultTraitAccess);
 596     reg.register_late_lint_pass(box indexing_slicing::IndexingSlicing);
 597     reg.register_late_lint_pass(box non_copy_const::NonCopyConst);
 598     reg.register_late_lint_pass(box ptr_offset_with_cast::PtrOffsetWithCast);
 599     reg.register_late_lint_pass(box redundant_clone::RedundantClone);
 600     reg.register_late_lint_pass(box slow_vector_initialization::SlowVectorInit);
 601     reg.register_late_lint_pass(box types::RefToMut);
 602     reg.register_late_lint_pass(box assertions_on_constants::AssertionsOnConstants);
 603     reg.register_late_lint_pass(box missing_const_for_fn::MissingConstForFn);
 604     reg.register_late_lint_pass(box transmuting_null::TransmutingNull);
 605     reg.register_late_lint_pass(box path_buf_push_overwrite::PathBufPushOverwrite);
 606     reg.register_late_lint_pass(box checked_conversions::CheckedConversions);
 607     reg.register_late_lint_pass(box integer_division::IntegerDivision);
 608     reg.register_late_lint_pass(box inherent_to_string::InherentToString);
 609     reg.register_late_lint_pass(box trait_bounds::TraitBounds);
 610     reg.register_late_lint_pass(box comparison_chain::ComparisonChain);
 611     reg.register_late_lint_pass(box mul_add::MulAddCheck);
 612     reg.register_late_lint_pass(box unused_self::UnusedSelf);
 613
 614     reg.register_lint_group("clippy::restriction", Some("clippy_restriction"), vec![
 615         arithmetic::FLOAT_ARITHMETIC,
 616         arithmetic::INTEGER_ARITHMETIC,
 617         dbg_macro::DBG_MACRO,
 618         else_if_without_else::ELSE_IF_WITHOUT_ELSE,
 619         implicit_return::IMPLICIT_RETURN,
 620         indexing_slicing::INDEXING_SLICING,
 621         inherent_impl::MULTIPLE_INHERENT_IMPL,
 622         integer_division::INTEGER_DIVISION,
 623         literal_representation::DECIMAL_LITERAL_REPRESENTATION,
 624         matches::WILDCARD_ENUM_MATCH_ARM,
 625         mem_forget::MEM_FORGET,
 626         methods::CLONE_ON_REF_PTR,
 627         methods::GET_UNWRAP,
 628         methods::OPTION_UNWRAP_USED,
 629         methods::RESULT_UNWRAP_USED,
 630         methods::WRONG_PUB_SELF_CONVENTION,
 631         misc::FLOAT_CMP_CONST,
 632         missing_doc::MISSING_DOCS_IN_PRIVATE_ITEMS,
 633         missing_inline::MISSING_INLINE_IN_PUBLIC_ITEMS,
 634         panic_unimplemented::UNIMPLEMENTED,
 635         shadow::SHADOW_REUSE,
 636         shadow::SHADOW_SAME,
 637         strings::STRING_ADD,
 638         write::PRINT_STDOUT,
 639         write::USE_DEBUG,
 640     ]);
 641
 642     reg.register_lint_group("clippy::pedantic", Some("clippy_pedantic"), vec![
 643         attrs::INLINE_ALWAYS,
 644         checked_conversions::CHECKED_CONVERSIONS,
 645         copies::MATCH_SAME_ARMS,
 646         copy_iterator::COPY_ITERATOR,
 647         default_trait_access::DEFAULT_TRAIT_ACCESS,
 648         derive::EXPL_IMPL_CLONE_ON_COPY,
 649         doc::DOC_MARKDOWN,
 650         empty_enum::EMPTY_ENUM,
 651         enum_glob_use::ENUM_GLOB_USE,
 652         enum_variants::MODULE_NAME_REPETITIONS,
 653         enum_variants::PUB_ENUM_VARIANT_NAMES,
 654         eta_reduction::REDUNDANT_CLOSURE_FOR_METHOD_CALLS,
 655         functions::MUST_USE_CANDIDATE,
 656         functions::TOO_MANY_LINES,
 657         if_not_else::IF_NOT_ELSE,
 658         infinite_iter::MAYBE_INFINITE_ITER,
 659         items_after_statements::ITEMS_AFTER_STATEMENTS,
 660         literal_representation::LARGE_DIGIT_GROUPS,
 661         loops::EXPLICIT_INTO_ITER_LOOP,
 662         loops::EXPLICIT_ITER_LOOP,
 663         matches::SINGLE_MATCH_ELSE,
 664         methods::FILTER_MAP,
 665         methods::FILTER_MAP_NEXT,
 666         methods::FIND_MAP,
 667         methods::MAP_FLATTEN,
 668         methods::OPTION_MAP_UNWRAP_OR,
 669         methods::OPTION_MAP_UNWRAP_OR_ELSE,
 670         methods::RESULT_MAP_UNWRAP_OR_ELSE,
 671         misc::USED_UNDERSCORE_BINDING,
 672         misc_early::UNSEPARATED_LITERAL_SUFFIX,
 673         mut_mut::MUT_MUT,
 674         needless_continue::NEEDLESS_CONTINUE,
 675         needless_pass_by_value::NEEDLESS_PASS_BY_VALUE,
 676         non_expressive_names::SIMILAR_NAMES,
 677         replace_consts::REPLACE_CONSTS,
 678         shadow::SHADOW_UNRELATED,
 679         strings::STRING_ADD_ASSIGN,
 680         trait_bounds::TYPE_REPETITION_IN_BOUNDS,
 681         types::CAST_LOSSLESS,
 682         types::CAST_POSSIBLE_TRUNCATION,
 683         types::CAST_POSSIBLE_WRAP,
 684         types::CAST_PRECISION_LOSS,
 685         types::CAST_SIGN_LOSS,
 686         types::INVALID_UPCAST_COMPARISONS,
 687         types::LINKEDLIST,
 688         unicode::NON_ASCII_LITERAL,
 689         unicode::UNICODE_NOT_NFC,
 690         unused_self::UNUSED_SELF,
 691         use_self::USE_SELF,
 692     ]);
 693
 694     reg.register_lint_group("clippy::internal", Some("clippy_internal"), vec![
 695         utils::internal_lints::CLIPPY_LINTS_INTERNAL,
 696         utils::internal_lints::COMPILER_LINT_FUNCTIONS,
 697         utils::internal_lints::LINT_WITHOUT_LINT_PASS,
 698         utils::internal_lints::OUTER_EXPN_EXPN_DATA,
 699     ]);
 700
 701     reg.register_lint_group("clippy::all", Some("clippy"), vec![
 702         approx_const::APPROX_CONSTANT,
 703         assertions_on_constants::ASSERTIONS_ON_CONSTANTS,
 704         assign_ops::ASSIGN_OP_PATTERN,
 705         assign_ops::MISREFACTORED_ASSIGN_OP,
 706         attrs::DEPRECATED_CFG_ATTR,
 707         attrs::DEPRECATED_SEMVER,
 708         attrs::UNKNOWN_CLIPPY_LINTS,
 709         attrs::USELESS_ATTRIBUTE,
 710         bit_mask::BAD_BIT_MASK,
 711         bit_mask::INEFFECTIVE_BIT_MASK,
 712         bit_mask::VERBOSE_BIT_MASK,
 713         blacklisted_name::BLACKLISTED_NAME,
 714         block_in_if_condition::BLOCK_IN_IF_CONDITION_EXPR,
 715         block_in_if_condition::BLOCK_IN_IF_CONDITION_STMT,
 716         booleans::LOGIC_BUG,
 717         booleans::NONMINIMAL_BOOL,
 718         bytecount::NAIVE_BYTECOUNT,
 719         cognitive_complexity::COGNITIVE_COMPLEXITY,
 720         collapsible_if::COLLAPSIBLE_IF,
 721         comparison_chain::COMPARISON_CHAIN,
 722         copies::IFS_SAME_COND,
 723         copies::IF_SAME_THEN_ELSE,
 724         derive::DERIVE_HASH_XOR_EQ,
 725         doc::MISSING_SAFETY_DOC,
 726         doc::NEEDLESS_DOCTEST_MAIN,
 727         double_comparison::DOUBLE_COMPARISONS,
 728         double_parens::DOUBLE_PARENS,
 729         drop_bounds::DROP_BOUNDS,
 730         drop_forget_ref::DROP_COPY,
 731         drop_forget_ref::DROP_REF,
 732         drop_forget_ref::FORGET_COPY,
 733         drop_forget_ref::FORGET_REF,
 734         duration_subsec::DURATION_SUBSEC,
 735         entry::MAP_ENTRY,
 736         enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT,
 737         enum_variants::ENUM_VARIANT_NAMES,
 738         enum_variants::MODULE_INCEPTION,
 739         eq_op::EQ_OP,
 740         eq_op::OP_REF,
 741         erasing_op::ERASING_OP,
 742         escape::BOXED_LOCAL,
 743         eta_reduction::REDUNDANT_CLOSURE,
 744         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
 745         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
 746         excessive_precision::EXCESSIVE_PRECISION,
 747         explicit_write::EXPLICIT_WRITE,
 748         format::USELESS_FORMAT,
 749         formatting::POSSIBLE_MISSING_COMMA,
 750         formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
 751         formatting::SUSPICIOUS_ELSE_FORMATTING,
 752         formatting::SUSPICIOUS_UNARY_OP_FORMATTING,
 753         functions::DOUBLE_MUST_USE,
 754         functions::MUST_USE_UNIT,
 755         functions::NOT_UNSAFE_PTR_ARG_DEREF,
 756         functions::TOO_MANY_ARGUMENTS,
 757         get_last_with_len::GET_LAST_WITH_LEN,
 758         identity_conversion::IDENTITY_CONVERSION,
 759         identity_op::IDENTITY_OP,
 760         indexing_slicing::OUT_OF_BOUNDS_INDEXING,
 761         infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
 762         infinite_iter::INFINITE_ITER,
 763         inherent_to_string::INHERENT_TO_STRING,
 764         inherent_to_string::INHERENT_TO_STRING_SHADOW_DISPLAY,
 765         inline_fn_without_body::INLINE_FN_WITHOUT_BODY,
 766         int_plus_one::INT_PLUS_ONE,
 767         large_enum_variant::LARGE_ENUM_VARIANT,
 768         len_zero::LEN_WITHOUT_IS_EMPTY,
 769         len_zero::LEN_ZERO,
 770         let_if_seq::USELESS_LET_IF_SEQ,
 771         lifetimes::EXTRA_UNUSED_LIFETIMES,
 772         lifetimes::NEEDLESS_LIFETIMES,
 773         literal_representation::INCONSISTENT_DIGIT_GROUPING,
 774         literal_representation::MISTYPED_LITERAL_SUFFIXES,
 775         literal_representation::UNREADABLE_LITERAL,
 776         loops::EMPTY_LOOP,
 777         loops::EXPLICIT_COUNTER_LOOP,
 778         loops::FOR_KV_MAP,
 779         loops::FOR_LOOP_OVER_OPTION,
 780         loops::FOR_LOOP_OVER_RESULT,
 781         loops::ITER_NEXT_LOOP,
 782         loops::MANUAL_MEMCPY,
 783         loops::MUT_RANGE_BOUND,
 784         loops::NEEDLESS_COLLECT,
 785         loops::NEEDLESS_RANGE_LOOP,
 786         loops::NEVER_LOOP,
 787         loops::REVERSE_RANGE_LOOP,
 788         loops::WHILE_IMMUTABLE_CONDITION,
 789         loops::WHILE_LET_LOOP,
 790         loops::WHILE_LET_ON_ITERATOR,
 791         main_recursion::MAIN_RECURSION,
 792         map_clone::MAP_CLONE,
 793         map_unit_fn::OPTION_MAP_UNIT_FN,
 794         map_unit_fn::RESULT_MAP_UNIT_FN,
 795         matches::MATCH_AS_REF,
 796         matches::MATCH_BOOL,
 797         matches::MATCH_OVERLAPPING_ARM,
 798         matches::MATCH_REF_PATS,
 799         matches::MATCH_WILD_ERR_ARM,
 800         matches::SINGLE_MATCH,
 801         mem_discriminant::MEM_DISCRIMINANT_NON_ENUM,
 802         mem_replace::MEM_REPLACE_OPTION_WITH_NONE,
 803         mem_replace::MEM_REPLACE_WITH_UNINIT,
 804         methods::CHARS_LAST_CMP,
 805         methods::CHARS_NEXT_CMP,
 806         methods::CLONE_DOUBLE_REF,
 807         methods::CLONE_ON_COPY,
 808         methods::EXPECT_FUN_CALL,
 809         methods::FILTER_NEXT,
 810         methods::FLAT_MAP_IDENTITY,
 811         methods::INEFFICIENT_TO_STRING,
 812         methods::INTO_ITER_ON_ARRAY,
 813         methods::INTO_ITER_ON_REF,
 814         methods::ITER_CLONED_COLLECT,
 815         methods::ITER_NTH,
 816         methods::ITER_SKIP_NEXT,
 817         methods::MANUAL_SATURATING_ARITHMETIC,
 818         methods::NEW_RET_NO_SELF,
 819         methods::OK_EXPECT,
 820         methods::OPTION_AND_THEN_SOME,
 821         methods::OPTION_MAP_OR_NONE,
 822         methods::OR_FUN_CALL,
 823         methods::SEARCH_IS_SOME,
 824         methods::SHOULD_IMPLEMENT_TRAIT,
 825         methods::SINGLE_CHAR_PATTERN,
 826         methods::STRING_EXTEND_CHARS,
 827         methods::SUSPICIOUS_MAP,
 828         methods::TEMPORARY_CSTRING_AS_PTR,
 829         methods::UNINIT_ASSUMED_INIT,
 830         methods::UNNECESSARY_FILTER_MAP,
 831         methods::UNNECESSARY_FOLD,
 832         methods::USELESS_ASREF,
 833         methods::WRONG_SELF_CONVENTION,
 834         minmax::MIN_MAX,
 835         misc::CMP_NAN,
 836         misc::CMP_OWNED,
 837         misc::FLOAT_CMP,
 838         misc::MODULO_ONE,
 839         misc::SHORT_CIRCUIT_STATEMENT,
 840         misc::TOPLEVEL_REF_ARG,
 841         misc::ZERO_PTR,
 842         misc_early::BUILTIN_TYPE_SHADOW,
 843         misc_early::DOUBLE_NEG,
 844         misc_early::DUPLICATE_UNDERSCORE_ARGUMENT,
 845         misc_early::MIXED_CASE_HEX_LITERALS,
 846         misc_early::REDUNDANT_CLOSURE_CALL,
 847         misc_early::REDUNDANT_PATTERN,
 848         misc_early::UNNEEDED_FIELD_PATTERN,
 849         misc_early::UNNEEDED_WILDCARD_PATTERN,
 850         misc_early::ZERO_PREFIXED_LITERAL,
 851         mul_add::MANUAL_MUL_ADD,
 852         mut_reference::UNNECESSARY_MUT_PASSED,
 853         mutex_atomic::MUTEX_ATOMIC,
 854         needless_bool::BOOL_COMPARISON,
 855         needless_bool::NEEDLESS_BOOL,
 856         needless_borrowed_ref::NEEDLESS_BORROWED_REFERENCE,
 857         needless_update::NEEDLESS_UPDATE,
 858         neg_cmp_op_on_partial_ord::NEG_CMP_OP_ON_PARTIAL_ORD,
 859         neg_multiply::NEG_MULTIPLY,
 860         new_without_default::NEW_WITHOUT_DEFAULT,
 861         no_effect::NO_EFFECT,
 862         no_effect::UNNECESSARY_OPERATION,
 863         non_copy_const::BORROW_INTERIOR_MUTABLE_CONST,
 864         non_copy_const::DECLARE_INTERIOR_MUTABLE_CONST,
 865         non_expressive_names::JUST_UNDERSCORES_AND_DIGITS,
 866         non_expressive_names::MANY_SINGLE_CHAR_NAMES,
 867         ok_if_let::IF_LET_SOME_RESULT,
 868         open_options::NONSENSICAL_OPEN_OPTIONS,
 869         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
 870         panic_unimplemented::PANIC_PARAMS,
 871         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
 872         precedence::PRECEDENCE,
 873         ptr::CMP_NULL,
 874         ptr::MUT_FROM_REF,
 875         ptr::PTR_ARG,
 876         ptr_offset_with_cast::PTR_OFFSET_WITH_CAST,
 877         question_mark::QUESTION_MARK,
 878         ranges::ITERATOR_STEP_BY_ZERO,
 879         ranges::RANGE_MINUS_ONE,
 880         ranges::RANGE_PLUS_ONE,
 881         ranges::RANGE_ZIP_WITH_LEN,
 882         redundant_clone::REDUNDANT_CLONE,
 883         redundant_field_names::REDUNDANT_FIELD_NAMES,
 884         redundant_pattern_matching::REDUNDANT_PATTERN_MATCHING,
 885         redundant_static_lifetimes::REDUNDANT_STATIC_LIFETIMES,
 886         reference::DEREF_ADDROF,
 887         reference::REF_IN_DEREF,
 888         regex::INVALID_REGEX,
 889         regex::REGEX_MACRO,
 890         regex::TRIVIAL_REGEX,
 891         returns::LET_AND_RETURN,
 892         returns::NEEDLESS_RETURN,
 893         returns::UNUSED_UNIT,
 894         serde_api::SERDE_API_MISUSE,
 895         slow_vector_initialization::SLOW_VECTOR_INITIALIZATION,
 896         strings::STRING_LIT_AS_BYTES,
 897         suspicious_trait_impl::SUSPICIOUS_ARITHMETIC_IMPL,
 898         suspicious_trait_impl::SUSPICIOUS_OP_ASSIGN_IMPL,
 899         swap::ALMOST_SWAPPED,
 900         swap::MANUAL_SWAP,
 901         temporary_assignment::TEMPORARY_ASSIGNMENT,
 902         transmute::CROSSPOINTER_TRANSMUTE,
 903         transmute::TRANSMUTE_BYTES_TO_STR,
 904         transmute::TRANSMUTE_INT_TO_BOOL,
 905         transmute::TRANSMUTE_INT_TO_CHAR,
 906         transmute::TRANSMUTE_INT_TO_FLOAT,
 907         transmute::TRANSMUTE_PTR_TO_PTR,
 908         transmute::TRANSMUTE_PTR_TO_REF,
 909         transmute::UNSOUND_COLLECTION_TRANSMUTE,
 910         transmute::USELESS_TRANSMUTE,
 911         transmute::WRONG_TRANSMUTE,
 912         transmuting_null::TRANSMUTING_NULL,
 913         trivially_copy_pass_by_ref::TRIVIALLY_COPY_PASS_BY_REF,
 914         try_err::TRY_ERR,
 915         types::ABSURD_EXTREME_COMPARISONS,
 916         types::BORROWED_BOX,
 917         types::BOX_VEC,
 918         types::CAST_PTR_ALIGNMENT,
 919         types::CAST_REF_TO_MUT,
 920         types::CHAR_LIT_AS_U8,
 921         types::FN_TO_NUMERIC_CAST,
 922         types::FN_TO_NUMERIC_CAST_WITH_TRUNCATION,
 923         types::IMPLICIT_HASHER,
 924         types::LET_UNIT_VALUE,
 925         types::OPTION_OPTION,
 926         types::TYPE_COMPLEXITY,
 927         types::UNIT_ARG,
 928         types::UNIT_CMP,
 929         types::UNNECESSARY_CAST,
 930         types::VEC_BOX,
 931         unicode::ZERO_WIDTH_SPACE,
 932         unsafe_removed_from_name::UNSAFE_REMOVED_FROM_NAME,
 933         unused_io_amount::UNUSED_IO_AMOUNT,
 934         unused_label::UNUSED_LABEL,
 935         unwrap::PANICKING_UNWRAP,
 936         unwrap::UNNECESSARY_UNWRAP,
 937         vec::USELESS_VEC,
 938         write::PRINTLN_EMPTY_STRING,
 939         write::PRINT_LITERAL,
 940         write::PRINT_WITH_NEWLINE,
 941         write::WRITELN_EMPTY_STRING,
 942         write::WRITE_LITERAL,
 943         write::WRITE_WITH_NEWLINE,
 944         zero_div_zero::ZERO_DIVIDED_BY_ZERO,
 945     ]);
 946
 947     reg.register_lint_group("clippy::style", Some("clippy_style"), vec![
 948         assertions_on_constants::ASSERTIONS_ON_CONSTANTS,
 949         assign_ops::ASSIGN_OP_PATTERN,
 950         attrs::UNKNOWN_CLIPPY_LINTS,
 951         bit_mask::VERBOSE_BIT_MASK,
 952         blacklisted_name::BLACKLISTED_NAME,
 953         block_in_if_condition::BLOCK_IN_IF_CONDITION_EXPR,
 954         block_in_if_condition::BLOCK_IN_IF_CONDITION_STMT,
 955         collapsible_if::COLLAPSIBLE_IF,
 956         comparison_chain::COMPARISON_CHAIN,
 957         doc::MISSING_SAFETY_DOC,
 958         doc::NEEDLESS_DOCTEST_MAIN,
 959         enum_variants::ENUM_VARIANT_NAMES,
 960         enum_variants::MODULE_INCEPTION,
 961         eq_op::OP_REF,
 962         eta_reduction::REDUNDANT_CLOSURE,
 963         excessive_precision::EXCESSIVE_PRECISION,
 964         formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
 965         formatting::SUSPICIOUS_ELSE_FORMATTING,
 966         formatting::SUSPICIOUS_UNARY_OP_FORMATTING,
 967         functions::DOUBLE_MUST_USE,
 968         functions::MUST_USE_UNIT,
 969         infallible_destructuring_match::INFALLIBLE_DESTRUCTURING_MATCH,
 970         inherent_to_string::INHERENT_TO_STRING,
 971         len_zero::LEN_WITHOUT_IS_EMPTY,
 972         len_zero::LEN_ZERO,
 973         let_if_seq::USELESS_LET_IF_SEQ,
 974         literal_representation::INCONSISTENT_DIGIT_GROUPING,
 975         literal_representation::UNREADABLE_LITERAL,
 976         loops::EMPTY_LOOP,
 977         loops::FOR_KV_MAP,
 978         loops::NEEDLESS_RANGE_LOOP,
 979         loops::WHILE_LET_ON_ITERATOR,
 980         main_recursion::MAIN_RECURSION,
 981         map_clone::MAP_CLONE,
 982         matches::MATCH_BOOL,
 983         matches::MATCH_OVERLAPPING_ARM,
 984         matches::MATCH_REF_PATS,
 985         matches::MATCH_WILD_ERR_ARM,
 986         matches::SINGLE_MATCH,
 987         mem_replace::MEM_REPLACE_OPTION_WITH_NONE,
 988         methods::CHARS_LAST_CMP,
 989         methods::INTO_ITER_ON_REF,
 990         methods::ITER_CLONED_COLLECT,
 991         methods::ITER_SKIP_NEXT,
 992         methods::MANUAL_SATURATING_ARITHMETIC,
 993         methods::NEW_RET_NO_SELF,
 994         methods::OK_EXPECT,
 995         methods::OPTION_MAP_OR_NONE,
 996         methods::SHOULD_IMPLEMENT_TRAIT,
 997         methods::STRING_EXTEND_CHARS,
 998         methods::UNNECESSARY_FOLD,
 999         methods::WRONG_SELF_CONVENTION,
1000         misc::TOPLEVEL_REF_ARG,
1001         misc::ZERO_PTR,
1002         misc_early::BUILTIN_TYPE_SHADOW,
1003         misc_early::DOUBLE_NEG,
1004         misc_early::DUPLICATE_UNDERSCORE_ARGUMENT,
1005         misc_early::MIXED_CASE_HEX_LITERALS,
1006         misc_early::REDUNDANT_PATTERN,
1007         misc_early::UNNEEDED_FIELD_PATTERN,
1008         mut_reference::UNNECESSARY_MUT_PASSED,
1009         neg_multiply::NEG_MULTIPLY,
1010         new_without_default::NEW_WITHOUT_DEFAULT,
1011         non_expressive_names::JUST_UNDERSCORES_AND_DIGITS,
1012         non_expressive_names::MANY_SINGLE_CHAR_NAMES,
1013         ok_if_let::IF_LET_SOME_RESULT,
1014         panic_unimplemented::PANIC_PARAMS,
1015         ptr::CMP_NULL,
1016         ptr::PTR_ARG,
1017         question_mark::QUESTION_MARK,
1018         redundant_field_names::REDUNDANT_FIELD_NAMES,
1019         redundant_pattern_matching::REDUNDANT_PATTERN_MATCHING,
1020         redundant_static_lifetimes::REDUNDANT_STATIC_LIFETIMES,
1021         regex::REGEX_MACRO,
1022         regex::TRIVIAL_REGEX,
1023         returns::LET_AND_RETURN,
1024         returns::NEEDLESS_RETURN,
1025         returns::UNUSED_UNIT,
1026         strings::STRING_LIT_AS_BYTES,
1027         try_err::TRY_ERR,
1028         types::FN_TO_NUMERIC_CAST,
1029         types::FN_TO_NUMERIC_CAST_WITH_TRUNCATION,
1030         types::IMPLICIT_HASHER,
1031         types::LET_UNIT_VALUE,
1032         unsafe_removed_from_name::UNSAFE_REMOVED_FROM_NAME,
1033         write::PRINTLN_EMPTY_STRING,
1034         write::PRINT_LITERAL,
1035         write::PRINT_WITH_NEWLINE,
1036         write::WRITELN_EMPTY_STRING,
1037         write::WRITE_LITERAL,
1038         write::WRITE_WITH_NEWLINE,
1039     ]);
1040
1041     reg.register_lint_group("clippy::complexity", Some("clippy_complexity"), vec![
1042         assign_ops::MISREFACTORED_ASSIGN_OP,
1043         attrs::DEPRECATED_CFG_ATTR,
1044         booleans::NONMINIMAL_BOOL,
1045         cognitive_complexity::COGNITIVE_COMPLEXITY,
1046         double_comparison::DOUBLE_COMPARISONS,
1047         double_parens::DOUBLE_PARENS,
1048         duration_subsec::DURATION_SUBSEC,
1049         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
1050         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
1051         explicit_write::EXPLICIT_WRITE,
1052         format::USELESS_FORMAT,
1053         functions::TOO_MANY_ARGUMENTS,
1054         get_last_with_len::GET_LAST_WITH_LEN,
1055         identity_conversion::IDENTITY_CONVERSION,
1056         identity_op::IDENTITY_OP,
1057         int_plus_one::INT_PLUS_ONE,
1058         lifetimes::EXTRA_UNUSED_LIFETIMES,
1059         lifetimes::NEEDLESS_LIFETIMES,
1060         loops::EXPLICIT_COUNTER_LOOP,
1061         loops::MUT_RANGE_BOUND,
1062         loops::WHILE_LET_LOOP,
1063         map_unit_fn::OPTION_MAP_UNIT_FN,
1064         map_unit_fn::RESULT_MAP_UNIT_FN,
1065         matches::MATCH_AS_REF,
1066         methods::CHARS_NEXT_CMP,
1067         methods::CLONE_ON_COPY,
1068         methods::FILTER_NEXT,
1069         methods::FLAT_MAP_IDENTITY,
1070         methods::OPTION_AND_THEN_SOME,
1071         methods::SEARCH_IS_SOME,
1072         methods::SUSPICIOUS_MAP,
1073         methods::UNNECESSARY_FILTER_MAP,
1074         methods::USELESS_ASREF,
1075         misc::SHORT_CIRCUIT_STATEMENT,
1076         misc_early::REDUNDANT_CLOSURE_CALL,
1077         misc_early::UNNEEDED_WILDCARD_PATTERN,
1078         misc_early::ZERO_PREFIXED_LITERAL,
1079         needless_bool::BOOL_COMPARISON,
1080         needless_bool::NEEDLESS_BOOL,
1081         needless_borrowed_ref::NEEDLESS_BORROWED_REFERENCE,
1082         needless_update::NEEDLESS_UPDATE,
1083         neg_cmp_op_on_partial_ord::NEG_CMP_OP_ON_PARTIAL_ORD,
1084         no_effect::NO_EFFECT,
1085         no_effect::UNNECESSARY_OPERATION,
1086         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
1087         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
1088         precedence::PRECEDENCE,
1089         ptr_offset_with_cast::PTR_OFFSET_WITH_CAST,
1090         ranges::RANGE_MINUS_ONE,
1091         ranges::RANGE_PLUS_ONE,
1092         ranges::RANGE_ZIP_WITH_LEN,
1093         reference::DEREF_ADDROF,
1094         reference::REF_IN_DEREF,
1095         swap::MANUAL_SWAP,
1096         temporary_assignment::TEMPORARY_ASSIGNMENT,
1097         transmute::CROSSPOINTER_TRANSMUTE,
1098         transmute::TRANSMUTE_BYTES_TO_STR,
1099         transmute::TRANSMUTE_INT_TO_BOOL,
1100         transmute::TRANSMUTE_INT_TO_CHAR,
1101         transmute::TRANSMUTE_INT_TO_FLOAT,
1102         transmute::TRANSMUTE_PTR_TO_PTR,
1103         transmute::TRANSMUTE_PTR_TO_REF,
1104         transmute::USELESS_TRANSMUTE,
1105         types::BORROWED_BOX,
1106         types::CHAR_LIT_AS_U8,
1107         types::OPTION_OPTION,
1108         types::TYPE_COMPLEXITY,
1109         types::UNIT_ARG,
1110         types::UNNECESSARY_CAST,
1111         types::VEC_BOX,
1112         unused_label::UNUSED_LABEL,
1113         unwrap::UNNECESSARY_UNWRAP,
1114         zero_div_zero::ZERO_DIVIDED_BY_ZERO,
1115     ]);
1116
1117     reg.register_lint_group("clippy::correctness", Some("clippy_correctness"), vec![
1118         approx_const::APPROX_CONSTANT,
1119         attrs::DEPRECATED_SEMVER,
1120         attrs::USELESS_ATTRIBUTE,
1121         bit_mask::BAD_BIT_MASK,
1122         bit_mask::INEFFECTIVE_BIT_MASK,
1123         booleans::LOGIC_BUG,
1124         copies::IFS_SAME_COND,
1125         copies::IF_SAME_THEN_ELSE,
1126         derive::DERIVE_HASH_XOR_EQ,
1127         drop_bounds::DROP_BOUNDS,
1128         drop_forget_ref::DROP_COPY,
1129         drop_forget_ref::DROP_REF,
1130         drop_forget_ref::FORGET_COPY,
1131         drop_forget_ref::FORGET_REF,
1132         enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT,
1133         eq_op::EQ_OP,
1134         erasing_op::ERASING_OP,
1135         formatting::POSSIBLE_MISSING_COMMA,
1136         functions::NOT_UNSAFE_PTR_ARG_DEREF,
1137         indexing_slicing::OUT_OF_BOUNDS_INDEXING,
1138         infinite_iter::INFINITE_ITER,
1139         inherent_to_string::INHERENT_TO_STRING_SHADOW_DISPLAY,
1140         inline_fn_without_body::INLINE_FN_WITHOUT_BODY,
1141         literal_representation::MISTYPED_LITERAL_SUFFIXES,
1142         loops::FOR_LOOP_OVER_OPTION,
1143         loops::FOR_LOOP_OVER_RESULT,
1144         loops::ITER_NEXT_LOOP,
1145         loops::NEVER_LOOP,
1146         loops::REVERSE_RANGE_LOOP,
1147         loops::WHILE_IMMUTABLE_CONDITION,
1148         mem_discriminant::MEM_DISCRIMINANT_NON_ENUM,
1149         mem_replace::MEM_REPLACE_WITH_UNINIT,
1150         methods::CLONE_DOUBLE_REF,
1151         methods::INTO_ITER_ON_ARRAY,
1152         methods::TEMPORARY_CSTRING_AS_PTR,
1153         methods::UNINIT_ASSUMED_INIT,
1154         minmax::MIN_MAX,
1155         misc::CMP_NAN,
1156         misc::FLOAT_CMP,
1157         misc::MODULO_ONE,
1158         non_copy_const::BORROW_INTERIOR_MUTABLE_CONST,
1159         non_copy_const::DECLARE_INTERIOR_MUTABLE_CONST,
1160         open_options::NONSENSICAL_OPEN_OPTIONS,
1161         ptr::MUT_FROM_REF,
1162         ranges::ITERATOR_STEP_BY_ZERO,
1163         regex::INVALID_REGEX,
1164         serde_api::SERDE_API_MISUSE,
1165         suspicious_trait_impl::SUSPICIOUS_ARITHMETIC_IMPL,
1166         suspicious_trait_impl::SUSPICIOUS_OP_ASSIGN_IMPL,
1167         swap::ALMOST_SWAPPED,
1168         transmute::UNSOUND_COLLECTION_TRANSMUTE,
1169         transmute::WRONG_TRANSMUTE,
1170         transmuting_null::TRANSMUTING_NULL,
1171         types::ABSURD_EXTREME_COMPARISONS,
1172         types::CAST_PTR_ALIGNMENT,
1173         types::CAST_REF_TO_MUT,
1174         types::UNIT_CMP,
1175         unicode::ZERO_WIDTH_SPACE,
1176         unused_io_amount::UNUSED_IO_AMOUNT,
1177         unwrap::PANICKING_UNWRAP,
1178     ]);
1179
1180     reg.register_lint_group("clippy::perf", Some("clippy_perf"), vec![
1181         bytecount::NAIVE_BYTECOUNT,
1182         entry::MAP_ENTRY,
1183         escape::BOXED_LOCAL,
1184         large_enum_variant::LARGE_ENUM_VARIANT,
1185         loops::MANUAL_MEMCPY,
1186         loops::NEEDLESS_COLLECT,
1187         methods::EXPECT_FUN_CALL,
1188         methods::INEFFICIENT_TO_STRING,
1189         methods::ITER_NTH,
1190         methods::OR_FUN_CALL,
1191         methods::SINGLE_CHAR_PATTERN,
1192         misc::CMP_OWNED,
1193         mul_add::MANUAL_MUL_ADD,
1194         mutex_atomic::MUTEX_ATOMIC,
1195         redundant_clone::REDUNDANT_CLONE,
1196         slow_vector_initialization::SLOW_VECTOR_INITIALIZATION,
1197         trivially_copy_pass_by_ref::TRIVIALLY_COPY_PASS_BY_REF,
1198         types::BOX_VEC,
1199         vec::USELESS_VEC,
1200     ]);
1201
1202     reg.register_lint_group("clippy::cargo", Some("clippy_cargo"), vec![
1203         cargo_common_metadata::CARGO_COMMON_METADATA,
1204         multiple_crate_versions::MULTIPLE_CRATE_VERSIONS,
1205         wildcard_dependencies::WILDCARD_DEPENDENCIES,
1206     ]);
1207
1208     reg.register_lint_group("clippy::nursery", Some("clippy_nursery"), vec![
1209         attrs::EMPTY_LINE_AFTER_OUTER_ATTR,
1210         fallible_impl_from::FALLIBLE_IMPL_FROM,
1211         missing_const_for_fn::MISSING_CONST_FOR_FN,
1212         mutex_atomic::MUTEX_INTEGER,
1213         needless_borrow::NEEDLESS_BORROW,
1214         path_buf_push_overwrite::PATH_BUF_PUSH_OVERWRITE,
1215     ]);
1216 }
1217
1218 #[rustfmt::skip]
1219 fn register_removed_non_tool_lints(store: &mut rustc::lint::LintStore) {
1220     store.register_removed(
1221         "should_assert_eq",
1222         "`assert!()` will be more flexible with RFC 2011",
1223     );
1224     store.register_removed(
1225         "extend_from_slice",
1226         "`.extend_from_slice(_)` is a faster way to extend a Vec by a slice",
1227     );
1228     store.register_removed(
1229         "range_step_by_zero",
1230         "`iterator.step_by(0)` panics nowadays",
1231     );
1232     store.register_removed(
1233         "unstable_as_slice",
1234         "`Vec::as_slice` has been stabilized in 1.7",
1235     );
1236     store.register_removed(
1237         "unstable_as_mut_slice",
1238         "`Vec::as_mut_slice` has been stabilized in 1.7",
1239     );
1240     store.register_removed(
1241         "str_to_string",
1242         "using `str::to_string` is common even today and specialization will likely happen soon",
1243     );
1244     store.register_removed(
1245         "string_to_string",
1246         "using `string::to_string` is common even today and specialization will likely happen soon",
1247     );
1248     store.register_removed(
1249         "misaligned_transmute",
1250         "this lint has been split into cast_ptr_alignment and transmute_ptr_to_ptr",
1251     );
1252     store.register_removed(
1253         "assign_ops",
1254         "using compound assignment operators (e.g., `+=`) is harmless",
1255     );
1256     store.register_removed(
1257         "if_let_redundant_pattern_matching",
1258         "this lint has been changed to redundant_pattern_matching",
1259     );
1260     store.register_removed(
1261         "unsafe_vector_initialization",
1262         "the replacement suggested by this lint had substantially different behavior",
1263     );
1264 }
1265
1266 /// Register renamed lints.
1267 ///
1268 /// Used in `./src/driver.rs`.
1269 pub fn register_renamed(ls: &mut rustc::lint::LintStore) {
1270     ls.register_renamed("clippy::stutter", "clippy::module_name_repetitions");
1271     ls.register_renamed("clippy::new_without_default_derive", "clippy::new_without_default");
1272     ls.register_renamed("clippy::cyclomatic_complexity", "clippy::cognitive_complexity");
1273     ls.register_renamed("clippy::const_static_lifetime", "clippy::redundant_static_lifetimes");
1274 }
1275
1276 // only exists to let the dogfood integration test works.
1277 // Don't run clippy as an executable directly
1278 #[allow(dead_code)]
1279 fn main() {
1280     panic!("Please use the cargo-clippy executable");
1281 }