clippy_lints/src/lib.rs

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