clippy_lints/src/lib.rs

   1 // error-pattern:cargo-clippy
   2
   3 #![feature(box_syntax)]
   4 #![feature(custom_attribute)]
   5 #![feature(i128_type)]
   6 #![feature(i128)]
   7 #![feature(rustc_private)]
   8 #![feature(slice_patterns)]
   9 #![feature(stmt_expr_attributes)]
  10 #![feature(conservative_impl_trait)]
  11 #![allow(unknown_lints, indexing_slicing, shadow_reuse, missing_docs_in_private_items)]
  12
  13 #[macro_use]
  14 extern crate rustc;
  15 extern crate syntax;
  16 extern crate syntax_pos;
  17
  18 extern crate toml;
  19
  20 // for unicode nfc normalization
  21
  22 extern crate unicode_normalization;
  23
  24 // for semver check in attrs.rs
  25
  26 extern crate semver;
  27
  28 // for regex checking
  29
  30 extern crate regex_syntax;
  31
  32 // for finding minimal boolean expressions
  33
  34 extern crate quine_mc_cluskey;
  35
  36 extern crate rustc_const_eval;
  37 extern crate rustc_const_math;
  38 extern crate rustc_errors;
  39 extern crate rustc_plugin;
  40
  41 #[macro_use]
  42 extern crate matches as matches_macro;
  43
  44 extern crate serde;
  45 #[macro_use]
  46 extern crate serde_derive;
  47
  48 #[macro_use]
  49 extern crate lazy_static;
  50
  51 extern crate itertools;
  52 extern crate pulldown_cmark;
  53
  54 macro_rules! declare_restriction_lint {
  55     { pub $name:tt, $description:tt } => {
  56         declare_lint! { pub $name, Allow, $description }
  57     };
  58 }
  59
  60 pub mod consts;
  61 #[macro_use]
  62 pub mod utils;
  63
  64 // begin lints modules, do not remove this comment, it’s used in `update_lints`
  65 pub mod approx_const;
  66 pub mod arithmetic;
  67 pub mod array_indexing;
  68 pub mod assign_ops;
  69 pub mod attrs;
  70 pub mod bit_mask;
  71 pub mod blacklisted_name;
  72 pub mod block_in_if_condition;
  73 pub mod booleans;
  74 pub mod bytecount;
  75 pub mod collapsible_if;
  76 pub mod copies;
  77 pub mod cyclomatic_complexity;
  78 pub mod derive;
  79 pub mod doc;
  80 pub mod double_parens;
  81 pub mod drop_forget_ref;
  82 pub mod empty_enum;
  83 pub mod entry;
  84 pub mod enum_clike;
  85 pub mod enum_glob_use;
  86 pub mod enum_variants;
  87 pub mod eq_op;
  88 pub mod escape;
  89 pub mod eta_reduction;
  90 pub mod eval_order_dependence;
  91 pub mod format;
  92 pub mod formatting;
  93 pub mod functions;
  94 pub mod identity_op;
  95 pub mod if_let_redundant_pattern_matching;
  96 pub mod if_not_else;
  97 pub mod infinite_iter;
  98 pub mod is_unit_expr;
  99 pub mod items_after_statements;
 100 pub mod large_enum_variant;
 101 pub mod len_zero;
 102 pub mod let_if_seq;
 103 pub mod lifetimes;
 104 pub mod literal_digit_grouping;
 105 pub mod loops;
 106 pub mod map_clone;
 107 pub mod matches;
 108 pub mod mem_forget;
 109 pub mod methods;
 110 pub mod minmax;
 111 pub mod misc;
 112 pub mod misc_early;
 113 pub mod missing_doc;
 114 pub mod mut_mut;
 115 pub mod mut_reference;
 116 pub mod mutex_atomic;
 117 pub mod needless_bool;
 118 pub mod needless_borrow;
 119 pub mod needless_borrowed_ref;
 120 pub mod needless_continue;
 121 pub mod needless_pass_by_value;
 122 pub mod needless_update;
 123 pub mod neg_multiply;
 124 pub mod new_without_default;
 125 pub mod no_effect;
 126 pub mod non_expressive_names;
 127 pub mod ok_if_let;
 128 pub mod open_options;
 129 pub mod overflow_check_conditional;
 130 pub mod panic;
 131 pub mod partialeq_ne_impl;
 132 pub mod precedence;
 133 pub mod print;
 134 pub mod ptr;
 135 pub mod ranges;
 136 pub mod reference;
 137 pub mod regex;
 138 pub mod returns;
 139 pub mod serde_api;
 140 pub mod shadow;
 141 pub mod should_assert_eq;
 142 pub mod strings;
 143 pub mod swap;
 144 pub mod temporary_assignment;
 145 pub mod transmute;
 146 pub mod types;
 147 pub mod unicode;
 148 pub mod unsafe_removed_from_name;
 149 pub mod unused_io_amount;
 150 pub mod unused_label;
 151 pub mod use_self;
 152 pub mod vec;
 153 pub mod zero_div_zero;
 154 // end lints modules, do not remove this comment, it’s used in `update_lints`
 155
 156 mod reexport {
 157     pub use syntax::ast::{Name, NodeId};
 158 }
 159
 160 #[cfg_attr(rustfmt, rustfmt_skip)]
 161 pub fn register_plugins(reg: &mut rustc_plugin::Registry) {
 162     let conf = match utils::conf::file_from_args(reg.args()) {
 163         Ok(file_name) => {
 164             // if the user specified a file, it must exist, otherwise default to `clippy.toml` but
 165             // do not require the file to exist
 166             let file_name = if let Some(file_name) = file_name {
 167                 Some(file_name)
 168             } else {
 169                 match utils::conf::lookup_conf_file() {
 170                     Ok(path) => path,
 171                     Err(error) => {
 172                         reg.sess.struct_err(&format!("error reading Clippy's configuration file: {}", error)).emit();
 173                         None
 174                     }
 175                 }
 176             };
 177
 178             let (conf, errors) = utils::conf::read(file_name.as_ref().map(|p| p.as_ref()));
 179
 180             // all conf errors are non-fatal, we just use the default conf in case of error
 181             for error in errors {
 182                 reg.sess.struct_err(&format!("error reading Clippy's configuration file: {}", error)).emit();
 183             }
 184
 185             conf
 186         }
 187         Err((err, span)) => {
 188             reg.sess.struct_span_err(span, err)
 189                     .span_note(span, "Clippy will use default configuration")
 190                     .emit();
 191             toml::from_str("").expect("we never error on empty config files")
 192         }
 193     };
 194
 195     let mut store = reg.sess.lint_store.borrow_mut();
 196     store.register_removed(
 197         "extend_from_slice",
 198         "`.extend_from_slice(_)` is a faster way to extend a Vec by a slice",
 199     );
 200     store.register_removed(
 201         "range_step_by_zero",
 202         "`iterator.step_by(0)` panics nowadays",
 203     );
 204     store.register_removed(
 205         "unstable_as_slice",
 206         "`Vec::as_slice` has been stabilized in 1.7",
 207     );
 208     store.register_removed(
 209         "unstable_as_mut_slice",
 210         "`Vec::as_mut_slice` has been stabilized in 1.7",
 211     );
 212     store.register_removed(
 213         "str_to_string",
 214         "using `str::to_string` is common even today and specialization will likely happen soon",
 215     );
 216     store.register_removed(
 217         "string_to_string",
 218         "using `string::to_string` is common even today and specialization will likely happen soon",
 219     );
 220     // end deprecated lints, do not remove this comment, it’s used in `update_lints`
 221
 222     reg.register_late_lint_pass(box serde_api::Serde);
 223     reg.register_early_lint_pass(box utils::internal_lints::Clippy);
 224     reg.register_late_lint_pass(box utils::internal_lints::LintWithoutLintPass::default());
 225     reg.register_late_lint_pass(box utils::inspector::Pass);
 226     reg.register_late_lint_pass(box utils::author::Pass);
 227     reg.register_late_lint_pass(box types::TypePass);
 228     reg.register_late_lint_pass(box booleans::NonminimalBool);
 229     reg.register_late_lint_pass(box eq_op::EqOp);
 230     reg.register_early_lint_pass(box enum_variants::EnumVariantNames::new(conf.enum_variant_name_threshold));
 231     reg.register_late_lint_pass(box enum_glob_use::EnumGlobUse);
 232     reg.register_late_lint_pass(box enum_clike::UnportableVariant);
 233     reg.register_late_lint_pass(box bit_mask::BitMask);
 234     reg.register_late_lint_pass(box ptr::PointerPass);
 235     reg.register_late_lint_pass(box needless_bool::NeedlessBool);
 236     reg.register_late_lint_pass(box needless_bool::BoolComparison);
 237     reg.register_late_lint_pass(box approx_const::Pass);
 238     reg.register_late_lint_pass(box misc::Pass);
 239     reg.register_early_lint_pass(box precedence::Precedence);
 240     reg.register_early_lint_pass(box is_unit_expr::UnitExpr);
 241     reg.register_early_lint_pass(box needless_continue::NeedlessContinue);
 242     reg.register_late_lint_pass(box eta_reduction::EtaPass);
 243     reg.register_late_lint_pass(box identity_op::IdentityOp);
 244     reg.register_early_lint_pass(box items_after_statements::ItemsAfterStatements);
 245     reg.register_late_lint_pass(box mut_mut::MutMut);
 246     reg.register_late_lint_pass(box mut_reference::UnnecessaryMutPassed);
 247     reg.register_late_lint_pass(box len_zero::LenZero);
 248     reg.register_late_lint_pass(box attrs::AttrPass);
 249     reg.register_early_lint_pass(box collapsible_if::CollapsibleIf);
 250     reg.register_late_lint_pass(box block_in_if_condition::BlockInIfCondition);
 251     reg.register_late_lint_pass(box unicode::Unicode);
 252     reg.register_late_lint_pass(box strings::StringAdd);
 253     reg.register_early_lint_pass(box returns::ReturnPass);
 254     reg.register_late_lint_pass(box methods::Pass);
 255     reg.register_late_lint_pass(box shadow::Pass);
 256     reg.register_late_lint_pass(box types::LetPass);
 257     reg.register_late_lint_pass(box types::UnitCmp);
 258     reg.register_late_lint_pass(box loops::Pass);
 259     reg.register_late_lint_pass(box lifetimes::LifetimePass);
 260     reg.register_late_lint_pass(box entry::HashMapLint);
 261     reg.register_late_lint_pass(box ranges::StepByZero);
 262     reg.register_late_lint_pass(box types::CastPass);
 263     reg.register_late_lint_pass(box types::TypeComplexityPass::new(conf.type_complexity_threshold));
 264     reg.register_late_lint_pass(box matches::MatchPass);
 265     reg.register_late_lint_pass(box minmax::MinMaxPass);
 266     reg.register_late_lint_pass(box open_options::NonSensical);
 267     reg.register_late_lint_pass(box zero_div_zero::Pass);
 268     reg.register_late_lint_pass(box mutex_atomic::MutexAtomic);
 269     reg.register_late_lint_pass(box needless_update::Pass);
 270     reg.register_late_lint_pass(box needless_borrow::NeedlessBorrow);
 271     reg.register_late_lint_pass(box needless_borrowed_ref::NeedlessBorrowedRef);
 272     reg.register_late_lint_pass(box no_effect::Pass);
 273     reg.register_late_lint_pass(box map_clone::Pass);
 274     reg.register_late_lint_pass(box temporary_assignment::Pass);
 275     reg.register_late_lint_pass(box transmute::Transmute);
 276     reg.register_late_lint_pass(
 277         box cyclomatic_complexity::CyclomaticComplexity::new(conf.cyclomatic_complexity_threshold)
 278     );
 279     reg.register_late_lint_pass(box escape::Pass{too_large_for_stack: conf.too_large_for_stack});
 280     reg.register_early_lint_pass(box misc_early::MiscEarly);
 281     reg.register_late_lint_pass(box array_indexing::ArrayIndexing);
 282     reg.register_late_lint_pass(box panic::Pass);
 283     reg.register_late_lint_pass(box strings::StringLitAsBytes);
 284     reg.register_late_lint_pass(box derive::Derive);
 285     reg.register_late_lint_pass(box types::CharLitAsU8);
 286     reg.register_late_lint_pass(box print::Pass);
 287     reg.register_late_lint_pass(box vec::Pass);
 288     reg.register_early_lint_pass(box non_expressive_names::NonExpressiveNames {
 289         single_char_binding_names_threshold: conf.single_char_binding_names_threshold,
 290     });
 291     reg.register_late_lint_pass(box drop_forget_ref::Pass);
 292     reg.register_late_lint_pass(box empty_enum::EmptyEnum);
 293     reg.register_late_lint_pass(box types::AbsurdExtremeComparisons);
 294     reg.register_late_lint_pass(box types::InvalidUpcastComparisons);
 295     reg.register_late_lint_pass(box regex::Pass::default());
 296     reg.register_late_lint_pass(box copies::CopyAndPaste);
 297     reg.register_late_lint_pass(box format::Pass);
 298     reg.register_early_lint_pass(box formatting::Formatting);
 299     reg.register_late_lint_pass(box swap::Swap);
 300     reg.register_early_lint_pass(box if_not_else::IfNotElse);
 301     reg.register_late_lint_pass(box overflow_check_conditional::OverflowCheckConditional);
 302     reg.register_late_lint_pass(box unused_label::UnusedLabel);
 303     reg.register_late_lint_pass(box new_without_default::NewWithoutDefault);
 304     reg.register_late_lint_pass(box blacklisted_name::BlackListedName::new(conf.blacklisted_names));
 305     reg.register_late_lint_pass(box functions::Functions::new(conf.too_many_arguments_threshold));
 306     reg.register_early_lint_pass(box doc::Doc::new(conf.doc_valid_idents));
 307     reg.register_late_lint_pass(box neg_multiply::NegMultiply);
 308     reg.register_early_lint_pass(box unsafe_removed_from_name::UnsafeNameRemoval);
 309     reg.register_late_lint_pass(box mem_forget::MemForget);
 310     reg.register_late_lint_pass(box arithmetic::Arithmetic::default());
 311     reg.register_late_lint_pass(box assign_ops::AssignOps);
 312     reg.register_late_lint_pass(box let_if_seq::LetIfSeq);
 313     reg.register_late_lint_pass(box eval_order_dependence::EvalOrderDependence);
 314     reg.register_late_lint_pass(box missing_doc::MissingDoc::new());
 315     reg.register_late_lint_pass(box ok_if_let::Pass);
 316     reg.register_late_lint_pass(box if_let_redundant_pattern_matching::Pass);
 317     reg.register_late_lint_pass(box partialeq_ne_impl::Pass);
 318     reg.register_early_lint_pass(box reference::Pass);
 319     reg.register_early_lint_pass(box double_parens::DoubleParens);
 320     reg.register_late_lint_pass(box unused_io_amount::UnusedIoAmount);
 321     reg.register_late_lint_pass(box large_enum_variant::LargeEnumVariant::new(conf.enum_variant_size_threshold));
 322     reg.register_late_lint_pass(box should_assert_eq::ShouldAssertEq);
 323     reg.register_late_lint_pass(box needless_pass_by_value::NeedlessPassByValue);
 324     reg.register_early_lint_pass(box literal_digit_grouping::LiteralDigitGrouping);
 325     reg.register_late_lint_pass(box use_self::UseSelf);
 326     reg.register_late_lint_pass(box bytecount::ByteCount);
 327     reg.register_late_lint_pass(box infinite_iter::Pass);
 328
 329     reg.register_lint_group("clippy_restrictions", vec![
 330         arithmetic::FLOAT_ARITHMETIC,
 331         arithmetic::INTEGER_ARITHMETIC,
 332         array_indexing::INDEXING_SLICING,
 333         assign_ops::ASSIGN_OPS,
 334     ]);
 335
 336     reg.register_lint_group("clippy_pedantic", vec![
 337         booleans::NONMINIMAL_BOOL,
 338         empty_enum::EMPTY_ENUM,
 339         enum_glob_use::ENUM_GLOB_USE,
 340         enum_variants::PUB_ENUM_VARIANT_NAMES,
 341         enum_variants::STUTTER,
 342         if_not_else::IF_NOT_ELSE,
 343         infinite_iter::MAYBE_INFINITE_ITER,
 344         items_after_statements::ITEMS_AFTER_STATEMENTS,
 345         matches::SINGLE_MATCH_ELSE,
 346         mem_forget::MEM_FORGET,
 347         methods::FILTER_MAP,
 348         methods::OPTION_MAP_UNWRAP_OR,
 349         methods::OPTION_MAP_UNWRAP_OR_ELSE,
 350         methods::OPTION_UNWRAP_USED,
 351         methods::RESULT_UNWRAP_USED,
 352         methods::WRONG_PUB_SELF_CONVENTION,
 353         misc::USED_UNDERSCORE_BINDING,
 354         misc_early::UNSEPARATED_LITERAL_SUFFIX,
 355         missing_doc::MISSING_DOCS_IN_PRIVATE_ITEMS,
 356         mut_mut::MUT_MUT,
 357         mutex_atomic::MUTEX_INTEGER,
 358         non_expressive_names::SIMILAR_NAMES,
 359         print::PRINT_STDOUT,
 360         print::USE_DEBUG,
 361         shadow::SHADOW_REUSE,
 362         shadow::SHADOW_SAME,
 363         shadow::SHADOW_UNRELATED,
 364         strings::STRING_ADD,
 365         strings::STRING_ADD_ASSIGN,
 366         types::CAST_POSSIBLE_TRUNCATION,
 367         types::CAST_POSSIBLE_WRAP,
 368         types::CAST_PRECISION_LOSS,
 369         types::CAST_SIGN_LOSS,
 370         types::INVALID_UPCAST_COMPARISONS,
 371         unicode::NON_ASCII_LITERAL,
 372         unicode::UNICODE_NOT_NFC,
 373         use_self::USE_SELF,
 374     ]);
 375
 376     reg.register_lint_group("clippy_internal", vec![
 377         utils::internal_lints::CLIPPY_LINTS_INTERNAL,
 378         utils::internal_lints::LINT_WITHOUT_LINT_PASS,
 379     ]);
 380
 381     reg.register_lint_group("clippy", vec![
 382         approx_const::APPROX_CONSTANT,
 383         array_indexing::OUT_OF_BOUNDS_INDEXING,
 384         assign_ops::ASSIGN_OP_PATTERN,
 385         assign_ops::MISREFACTORED_ASSIGN_OP,
 386         attrs::DEPRECATED_SEMVER,
 387         attrs::INLINE_ALWAYS,
 388         attrs::USELESS_ATTRIBUTE,
 389         bit_mask::BAD_BIT_MASK,
 390         bit_mask::INEFFECTIVE_BIT_MASK,
 391         bit_mask::VERBOSE_BIT_MASK,
 392         blacklisted_name::BLACKLISTED_NAME,
 393         block_in_if_condition::BLOCK_IN_IF_CONDITION_EXPR,
 394         block_in_if_condition::BLOCK_IN_IF_CONDITION_STMT,
 395         booleans::LOGIC_BUG,
 396         bytecount::NAIVE_BYTECOUNT,
 397         collapsible_if::COLLAPSIBLE_IF,
 398         copies::IF_SAME_THEN_ELSE,
 399         copies::IFS_SAME_COND,
 400         copies::MATCH_SAME_ARMS,
 401         cyclomatic_complexity::CYCLOMATIC_COMPLEXITY,
 402         derive::DERIVE_HASH_XOR_EQ,
 403         derive::EXPL_IMPL_CLONE_ON_COPY,
 404         doc::DOC_MARKDOWN,
 405         double_parens::DOUBLE_PARENS,
 406         drop_forget_ref::DROP_COPY,
 407         drop_forget_ref::DROP_REF,
 408         drop_forget_ref::FORGET_COPY,
 409         drop_forget_ref::FORGET_REF,
 410         entry::MAP_ENTRY,
 411         enum_clike::ENUM_CLIKE_UNPORTABLE_VARIANT,
 412         enum_variants::ENUM_VARIANT_NAMES,
 413         enum_variants::MODULE_INCEPTION,
 414         eq_op::EQ_OP,
 415         eq_op::OP_REF,
 416         escape::BOXED_LOCAL,
 417         eta_reduction::REDUNDANT_CLOSURE,
 418         eval_order_dependence::DIVERGING_SUB_EXPRESSION,
 419         eval_order_dependence::EVAL_ORDER_DEPENDENCE,
 420         format::USELESS_FORMAT,
 421         formatting::POSSIBLE_MISSING_COMMA,
 422         formatting::SUSPICIOUS_ASSIGNMENT_FORMATTING,
 423         formatting::SUSPICIOUS_ELSE_FORMATTING,
 424         functions::NOT_UNSAFE_PTR_ARG_DEREF,
 425         functions::TOO_MANY_ARGUMENTS,
 426         identity_op::IDENTITY_OP,
 427         if_let_redundant_pattern_matching::IF_LET_REDUNDANT_PATTERN_MATCHING,
 428         infinite_iter::INFINITE_ITER,
 429         is_unit_expr::UNIT_EXPR,
 430         large_enum_variant::LARGE_ENUM_VARIANT,
 431         len_zero::LEN_WITHOUT_IS_EMPTY,
 432         len_zero::LEN_ZERO,
 433         let_if_seq::USELESS_LET_IF_SEQ,
 434         lifetimes::NEEDLESS_LIFETIMES,
 435         lifetimes::UNUSED_LIFETIMES,
 436         literal_digit_grouping::INCONSISTENT_DIGIT_GROUPING,
 437         literal_digit_grouping::LARGE_DIGIT_GROUPS,
 438         literal_digit_grouping::UNREADABLE_LITERAL,
 439         loops::EMPTY_LOOP,
 440         loops::EXPLICIT_COUNTER_LOOP,
 441         loops::EXPLICIT_INTO_ITER_LOOP,
 442         loops::EXPLICIT_ITER_LOOP,
 443         loops::FOR_KV_MAP,
 444         loops::FOR_LOOP_OVER_OPTION,
 445         loops::FOR_LOOP_OVER_RESULT,
 446         loops::ITER_NEXT_LOOP,
 447         loops::MANUAL_MEMCPY,
 448         loops::NEEDLESS_RANGE_LOOP,
 449         loops::NEVER_LOOP,
 450         loops::REVERSE_RANGE_LOOP,
 451         loops::UNUSED_COLLECT,
 452         loops::WHILE_LET_LOOP,
 453         loops::WHILE_LET_ON_ITERATOR,
 454         map_clone::MAP_CLONE,
 455         matches::MATCH_BOOL,
 456         matches::MATCH_OVERLAPPING_ARM,
 457         matches::MATCH_REF_PATS,
 458         matches::MATCH_WILD_ERR_ARM,
 459         matches::SINGLE_MATCH,
 460         methods::CHARS_NEXT_CMP,
 461         methods::CLONE_DOUBLE_REF,
 462         methods::CLONE_ON_COPY,
 463         methods::FILTER_NEXT,
 464         methods::GET_UNWRAP,
 465         methods::ITER_CLONED_COLLECT,
 466         methods::ITER_NTH,
 467         methods::ITER_SKIP_NEXT,
 468         methods::NEW_RET_NO_SELF,
 469         methods::OK_EXPECT,
 470         methods::OR_FUN_CALL,
 471         methods::SEARCH_IS_SOME,
 472         methods::SHOULD_IMPLEMENT_TRAIT,
 473         methods::SINGLE_CHAR_PATTERN,
 474         methods::STRING_EXTEND_CHARS,
 475         methods::TEMPORARY_CSTRING_AS_PTR,
 476         methods::WRONG_SELF_CONVENTION,
 477         minmax::MIN_MAX,
 478         misc::CMP_NAN,
 479         misc::CMP_OWNED,
 480         misc::FLOAT_CMP,
 481         misc::MODULO_ONE,
 482         misc::REDUNDANT_PATTERN,
 483         misc::SHORT_CIRCUIT_STATEMENT,
 484         misc::TOPLEVEL_REF_ARG,
 485         misc::ZERO_PTR,
 486         misc_early::BUILTIN_TYPE_SHADOW,
 487         misc_early::DOUBLE_NEG,
 488         misc_early::DUPLICATE_UNDERSCORE_ARGUMENT,
 489         misc_early::MIXED_CASE_HEX_LITERALS,
 490         misc_early::REDUNDANT_CLOSURE_CALL,
 491         misc_early::UNNEEDED_FIELD_PATTERN,
 492         misc_early::ZERO_PREFIXED_LITERAL,
 493         mut_reference::UNNECESSARY_MUT_PASSED,
 494         mutex_atomic::MUTEX_ATOMIC,
 495         needless_bool::BOOL_COMPARISON,
 496         needless_bool::NEEDLESS_BOOL,
 497         needless_borrow::NEEDLESS_BORROW,
 498         needless_borrowed_ref::NEEDLESS_BORROWED_REFERENCE,
 499         needless_continue::NEEDLESS_CONTINUE,
 500         needless_pass_by_value::NEEDLESS_PASS_BY_VALUE,
 501         needless_update::NEEDLESS_UPDATE,
 502         neg_multiply::NEG_MULTIPLY,
 503         new_without_default::NEW_WITHOUT_DEFAULT,
 504         new_without_default::NEW_WITHOUT_DEFAULT_DERIVE,
 505         no_effect::NO_EFFECT,
 506         no_effect::UNNECESSARY_OPERATION,
 507         non_expressive_names::MANY_SINGLE_CHAR_NAMES,
 508         ok_if_let::IF_LET_SOME_RESULT,
 509         open_options::NONSENSICAL_OPEN_OPTIONS,
 510         overflow_check_conditional::OVERFLOW_CHECK_CONDITIONAL,
 511         panic::PANIC_PARAMS,
 512         partialeq_ne_impl::PARTIALEQ_NE_IMPL,
 513         precedence::PRECEDENCE,
 514         print::PRINT_WITH_NEWLINE,
 515         ptr::CMP_NULL,
 516         ptr::MUT_FROM_REF,
 517         ptr::PTR_ARG,
 518         ranges::ITERATOR_STEP_BY_ZERO,
 519         ranges::RANGE_ZIP_WITH_LEN,
 520         reference::DEREF_ADDROF,
 521         regex::INVALID_REGEX,
 522         regex::REGEX_MACRO,
 523         regex::TRIVIAL_REGEX,
 524         returns::LET_AND_RETURN,
 525         returns::NEEDLESS_RETURN,
 526         serde_api::SERDE_API_MISUSE,
 527         should_assert_eq::SHOULD_ASSERT_EQ,
 528         strings::STRING_LIT_AS_BYTES,
 529         swap::ALMOST_SWAPPED,
 530         swap::MANUAL_SWAP,
 531         temporary_assignment::TEMPORARY_ASSIGNMENT,
 532         transmute::CROSSPOINTER_TRANSMUTE,
 533         transmute::TRANSMUTE_PTR_TO_REF,
 534         transmute::USELESS_TRANSMUTE,
 535         transmute::WRONG_TRANSMUTE,
 536         types::ABSURD_EXTREME_COMPARISONS,
 537         types::BORROWED_BOX,
 538         types::BOX_VEC,
 539         types::CAST_LOSSLESS,
 540         types::CHAR_LIT_AS_U8,
 541         types::LET_UNIT_VALUE,
 542         types::LINKEDLIST,
 543         types::TYPE_COMPLEXITY,
 544         types::UNIT_CMP,
 545         types::UNNECESSARY_CAST,
 546         unicode::ZERO_WIDTH_SPACE,
 547         unsafe_removed_from_name::UNSAFE_REMOVED_FROM_NAME,
 548         unused_io_amount::UNUSED_IO_AMOUNT,
 549         unused_label::UNUSED_LABEL,
 550         vec::USELESS_VEC,
 551         zero_div_zero::ZERO_DIVIDED_BY_ZERO,
 552     ]);
 553 }
 554
 555 // only exists to let the dogfood integration test works.
 556 // Don't run clippy as an executable directly
 557 #[allow(dead_code, print_stdout)]
 558 fn main() {
 559     panic!("Please use the cargo-clippy executable");
 560 }