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1 // error-pattern:cargo-clippy
2
3 #![feature(array_windows)]
4 #![feature(binary_heap_into_iter_sorted)]
5 #![feature(box_patterns)]
6 #![feature(control_flow_enum)]
7 #![feature(drain_filter)]
8 #![feature(iter_intersperse)]
9 #![feature(let_chains)]
10 #![feature(let_else)]
11 #![feature(lint_reasons)]
12 #![feature(once_cell)]
13 #![feature(rustc_private)]
14 #![feature(stmt_expr_attributes)]
15 #![recursion_limit = "512"]
16 #![cfg_attr(feature = "deny-warnings", deny(warnings))]
17 #![allow(clippy::missing_docs_in_private_items, clippy::must_use_candidate)]
18 #![warn(trivial_casts, trivial_numeric_casts)]
19 // warn on lints, that are included in `rust-lang/rust`s bootstrap
20 #![warn(rust_2018_idioms, unused_lifetimes)]
21 // warn on rustc internal lints
22 #![warn(rustc::internal)]
23 // Disable this rustc lint for now, as it was also done in rustc
24 #![allow(rustc::potential_query_instability)]
25
26 // FIXME: switch to something more ergonomic here, once available.
27 // (Currently there is no way to opt into sysroot crates without `extern crate`.)
28 extern crate rustc_arena;
29 extern crate rustc_ast;
30 extern crate rustc_ast_pretty;
31 extern crate rustc_attr;
32 extern crate rustc_data_structures;
33 extern crate rustc_driver;
34 extern crate rustc_errors;
35 extern crate rustc_hir;
36 extern crate rustc_hir_pretty;
37 extern crate rustc_index;
38 extern crate rustc_infer;
39 extern crate rustc_lexer;
40 extern crate rustc_lint;
41 extern crate rustc_middle;
42 extern crate rustc_mir_dataflow;
43 extern crate rustc_parse;
44 extern crate rustc_parse_format;
45 extern crate rustc_session;
46 extern crate rustc_span;
47 extern crate rustc_target;
48 extern crate rustc_trait_selection;
49 extern crate rustc_typeck;
50
51 #[macro_use]
52 extern crate clippy_utils;
53
54 use clippy_utils::parse_msrv;
55 use rustc_data_structures::fx::FxHashSet;
56 use rustc_lint::LintId;
57 use rustc_session::Session;
58
59 /// Macro used to declare a Clippy lint.
60 ///
61 /// Every lint declaration consists of 4 parts:
62 ///
63 /// 1. The documentation, which is used for the website
64 /// 2. The `LINT_NAME`. See [lint naming][lint_naming] on lint naming conventions.
65 /// 3. The `lint_level`, which is a mapping from *one* of our lint groups to `Allow`, `Warn` or
66 ///    `Deny`. The lint level here has nothing to do with what lint groups the lint is a part of.
67 /// 4. The `description` that contains a short explanation on what's wrong with code where the
68 ///    lint is triggered.
69 ///
70 /// Currently the categories `style`, `correctness`, `suspicious`, `complexity` and `perf` are
71 /// enabled by default. As said in the README.md of this repository, if the lint level mapping
72 /// changes, please update README.md.
73 ///
74 /// # Example
75 ///
76 /// ```
77 /// #![feature(rustc_private)]
78 /// extern crate rustc_session;
79 /// use rustc_session::declare_tool_lint;
80 /// use clippy_lints::declare_clippy_lint;
81 ///
82 /// declare_clippy_lint! {
83 ///     /// ### What it does
84 ///     /// Checks for ... (describe what the lint matches).
85 ///     ///
86 ///     /// ### Why is this bad?
87 ///     /// Supply the reason for linting the code.
88 ///     ///
89 ///     /// ### Example
90 ///     /// ```rust
91 ///     /// // Bad
92 ///     /// Insert a short example of code that triggers the lint
93 ///     ///
94 ///     /// // Good
95 ///     /// Insert a short example of improved code that doesn't trigger the lint
96 ///     /// ```
97 ///     pub LINT_NAME,
98 ///     pedantic,
99 ///     "description"
100 /// }
101 /// ```
102 /// [lint_naming]: https://rust-lang.github.io/rfcs/0344-conventions-galore.html#lints
103 #[macro_export]
104 macro_rules! declare_clippy_lint {
105     { $(#[$attr:meta])* pub $name:tt, style, $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, correctness, $description:tt } => {
111         declare_tool_lint! {
112             $(#[$attr])* pub clippy::$name, Deny, $description, report_in_external_macro: true
113         }
114     };
115     { $(#[$attr:meta])* pub $name:tt, suspicious, $description:tt } => {
116         declare_tool_lint! {
117             $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
118         }
119     };
120     { $(#[$attr:meta])* pub $name:tt, complexity, $description:tt } => {
121         declare_tool_lint! {
122             $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
123         }
124     };
125     { $(#[$attr:meta])* pub $name:tt, perf, $description:tt } => {
126         declare_tool_lint! {
127             $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
128         }
129     };
130     { $(#[$attr:meta])* pub $name:tt, pedantic, $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, restriction, $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, cargo, $description:tt } => {
141         declare_tool_lint! {
142             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
143         }
144     };
145     { $(#[$attr:meta])* pub $name:tt, nursery, $description:tt } => {
146         declare_tool_lint! {
147             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
148         }
149     };
150     { $(#[$attr:meta])* pub $name:tt, internal, $description:tt } => {
151         declare_tool_lint! {
152             $(#[$attr])* pub clippy::$name, Allow, $description, report_in_external_macro: true
153         }
154     };
155     { $(#[$attr:meta])* pub $name:tt, internal_warn, $description:tt } => {
156         declare_tool_lint! {
157             $(#[$attr])* pub clippy::$name, Warn, $description, report_in_external_macro: true
158         }
159     };
160 }
161
162 #[cfg(feature = "internal")]
163 mod deprecated_lints;
164 #[cfg_attr(feature = "internal", allow(clippy::missing_clippy_version_attribute))]
165 mod utils;
166
167 mod renamed_lints;
168
169 // begin lints modules, do not remove this comment, it’s used in `update_lints`
170 mod absurd_extreme_comparisons;
171 mod almost_complete_letter_range;
172 mod approx_const;
173 mod arithmetic;
174 mod as_conversions;
175 mod asm_syntax;
176 mod assertions_on_constants;
177 mod assign_ops;
178 mod async_yields_async;
179 mod attrs;
180 mod await_holding_invalid;
181 mod bit_mask;
182 mod blacklisted_name;
183 mod blocks_in_if_conditions;
184 mod bool_assert_comparison;
185 mod booleans;
186 mod borrow_as_ptr;
187 mod borrow_deref_ref;
188 mod bytecount;
189 mod bytes_count_to_len;
190 mod cargo;
191 mod case_sensitive_file_extension_comparisons;
192 mod casts;
193 mod checked_conversions;
194 mod cognitive_complexity;
195 mod collapsible_if;
196 mod collapsible_match;
197 mod comparison_chain;
198 mod copies;
199 mod copy_iterator;
200 mod crate_in_macro_def;
201 mod create_dir;
202 mod dbg_macro;
203 mod default;
204 mod default_numeric_fallback;
205 mod default_union_representation;
206 mod dereference;
207 mod derivable_impls;
208 mod derive;
209 mod disallowed_methods;
210 mod disallowed_script_idents;
211 mod disallowed_types;
212 mod doc;
213 mod doc_link_with_quotes;
214 mod double_comparison;
215 mod double_parens;
216 mod drop_forget_ref;
217 mod duplicate_mod;
218 mod duration_subsec;
219 mod else_if_without_else;
220 mod empty_drop;
221 mod empty_enum;
222 mod empty_structs_with_brackets;
223 mod entry;
224 mod enum_clike;
225 mod enum_variants;
226 mod eq_op;
227 mod equatable_if_let;
228 mod erasing_op;
229 mod escape;
230 mod eta_reduction;
231 mod excessive_bools;
232 mod exhaustive_items;
233 mod exit;
234 mod explicit_write;
235 mod fallible_impl_from;
236 mod float_equality_without_abs;
237 mod float_literal;
238 mod floating_point_arithmetic;
239 mod format;
240 mod format_args;
241 mod format_impl;
242 mod format_push_string;
243 mod formatting;
244 mod from_over_into;
245 mod from_str_radix_10;
246 mod functions;
247 mod future_not_send;
248 mod get_first;
249 mod identity_op;
250 mod if_let_mutex;
251 mod if_not_else;
252 mod if_then_some_else_none;
253 mod implicit_hasher;
254 mod implicit_return;
255 mod implicit_saturating_sub;
256 mod inconsistent_struct_constructor;
257 mod index_refutable_slice;
258 mod indexing_slicing;
259 mod infinite_iter;
260 mod inherent_impl;
261 mod inherent_to_string;
262 mod init_numbered_fields;
263 mod inline_fn_without_body;
264 mod int_plus_one;
265 mod integer_division;
266 mod invalid_upcast_comparisons;
267 mod items_after_statements;
268 mod iter_not_returning_iterator;
269 mod large_const_arrays;
270 mod large_enum_variant;
271 mod large_include_file;
272 mod large_stack_arrays;
273 mod len_zero;
274 mod let_if_seq;
275 mod let_underscore;
276 mod lifetimes;
277 mod literal_representation;
278 mod loops;
279 mod macro_use;
280 mod main_recursion;
281 mod manual_assert;
282 mod manual_async_fn;
283 mod manual_bits;
284 mod manual_map;
285 mod manual_non_exhaustive;
286 mod manual_ok_or;
287 mod manual_strip;
288 mod manual_unwrap_or;
289 mod map_clone;
290 mod map_err_ignore;
291 mod map_unit_fn;
292 mod match_on_vec_items;
293 mod match_result_ok;
294 mod match_str_case_mismatch;
295 mod matches;
296 mod mem_forget;
297 mod mem_replace;
298 mod methods;
299 mod minmax;
300 mod misc;
301 mod misc_early;
302 mod missing_const_for_fn;
303 mod missing_doc;
304 mod missing_enforced_import_rename;
305 mod missing_inline;
306 mod mixed_read_write_in_expression;
307 mod module_style;
308 mod modulo_arithmetic;
309 mod mut_key;
310 mod mut_mut;
311 mod mut_mutex_lock;
312 mod mut_reference;
313 mod mutable_debug_assertion;
314 mod mutex_atomic;
315 mod needless_arbitrary_self_type;
316 mod needless_bitwise_bool;
317 mod needless_bool;
318 mod needless_borrowed_ref;
319 mod needless_continue;
320 mod needless_for_each;
321 mod needless_late_init;
322 mod needless_pass_by_value;
323 mod needless_question_mark;
324 mod needless_update;
325 mod neg_cmp_op_on_partial_ord;
326 mod neg_multiply;
327 mod new_without_default;
328 mod no_effect;
329 mod non_copy_const;
330 mod non_expressive_names;
331 mod non_octal_unix_permissions;
332 mod non_send_fields_in_send_ty;
333 mod nonstandard_macro_braces;
334 mod octal_escapes;
335 mod only_used_in_recursion;
336 mod open_options;
337 mod option_env_unwrap;
338 mod option_if_let_else;
339 mod overflow_check_conditional;
340 mod panic_in_result_fn;
341 mod panic_unimplemented;
342 mod partialeq_ne_impl;
343 mod pass_by_ref_or_value;
344 mod path_buf_push_overwrite;
345 mod pattern_type_mismatch;
346 mod precedence;
347 mod ptr;
348 mod ptr_eq;
349 mod ptr_offset_with_cast;
350 mod pub_use;
351 mod question_mark;
352 mod ranges;
353 mod rc_clone_in_vec_init;
354 mod redundant_clone;
355 mod redundant_closure_call;
356 mod redundant_else;
357 mod redundant_field_names;
358 mod redundant_pub_crate;
359 mod redundant_slicing;
360 mod redundant_static_lifetimes;
361 mod ref_option_ref;
362 mod reference;
363 mod regex;
364 mod repeat_once;
365 mod return_self_not_must_use;
366 mod returns;
367 mod same_name_method;
368 mod self_assignment;
369 mod self_named_constructors;
370 mod semicolon_if_nothing_returned;
371 mod serde_api;
372 mod shadow;
373 mod significant_drop_in_scrutinee;
374 mod single_char_lifetime_names;
375 mod single_component_path_imports;
376 mod size_of_in_element_count;
377 mod slow_vector_initialization;
378 mod stable_sort_primitive;
379 mod strings;
380 mod strlen_on_c_strings;
381 mod suspicious_operation_groupings;
382 mod suspicious_trait_impl;
383 mod swap;
384 mod swap_ptr_to_ref;
385 mod tabs_in_doc_comments;
386 mod temporary_assignment;
387 mod to_digit_is_some;
388 mod trailing_empty_array;
389 mod trait_bounds;
390 mod transmute;
391 mod transmuting_null;
392 mod try_err;
393 mod types;
394 mod undocumented_unsafe_blocks;
395 mod unicode;
396 mod uninit_vec;
397 mod unit_hash;
398 mod unit_return_expecting_ord;
399 mod unit_types;
400 mod unnamed_address;
401 mod unnecessary_owned_empty_strings;
402 mod unnecessary_self_imports;
403 mod unnecessary_sort_by;
404 mod unnecessary_wraps;
405 mod unnested_or_patterns;
406 mod unsafe_removed_from_name;
407 mod unused_async;
408 mod unused_io_amount;
409 mod unused_rounding;
410 mod unused_self;
411 mod unused_unit;
412 mod unwrap;
413 mod unwrap_in_result;
414 mod upper_case_acronyms;
415 mod use_self;
416 mod useless_conversion;
417 mod vec;
418 mod vec_init_then_push;
419 mod vec_resize_to_zero;
420 mod verbose_file_reads;
421 mod wildcard_imports;
422 mod write;
423 mod zero_div_zero;
424 mod zero_sized_map_values;
425 // end lints modules, do not remove this comment, it’s used in `update_lints`
426
427 pub use crate::utils::conf::Conf;
428 use crate::utils::conf::{format_error, TryConf};
429
430 /// Register all pre expansion lints
431 ///
432 /// Pre-expansion lints run before any macro expansion has happened.
433 ///
434 /// Note that due to the architecture of the compiler, currently `cfg_attr` attributes on crate
435 /// level (i.e `#![cfg_attr(...)]`) will still be expanded even when using a pre-expansion pass.
436 ///
437 /// Used in `./src/driver.rs`.
438 pub fn register_pre_expansion_lints(store: &mut rustc_lint::LintStore, sess: &Session, conf: &Conf) {
439     // NOTE: Do not add any more pre-expansion passes. These should be removed eventually.
440
441     let msrv = conf.msrv.as_ref().and_then(|s| {
442         parse_msrv(s, None, None).or_else(|| {
443             sess.err(&format!(
444                 "error reading Clippy's configuration file. `{}` is not a valid Rust version",
445                 s
446             ));
447             None
448         })
449     });
450
451     store.register_pre_expansion_pass(|| Box::new(write::Write::default()));
452     store.register_pre_expansion_pass(move || Box::new(attrs::EarlyAttributes { msrv }));
453 }
454
455 #[doc(hidden)]
456 pub fn read_conf(sess: &Session) -> Conf {
457     let file_name = match utils::conf::lookup_conf_file() {
458         Ok(Some(path)) => path,
459         Ok(None) => return Conf::default(),
460         Err(error) => {
461             sess.struct_err(&format!("error finding Clippy's configuration file: {}", error))
462                 .emit();
463             return Conf::default();
464         },
465     };
466
467     let TryConf { conf, errors } = utils::conf::read(&file_name);
468     // all conf errors are non-fatal, we just use the default conf in case of error
469     for error in errors {
470         sess.struct_err(&format!(
471             "error reading Clippy's configuration file `{}`: {}",
472             file_name.display(),
473             format_error(error)
474         ))
475         .emit();
476     }
477
478     conf
479 }
480
481 /// Register all lints and lint groups with the rustc plugin registry
482 ///
483 /// Used in `./src/driver.rs`.
484 #[expect(clippy::too_many_lines)]
485 pub fn register_plugins(store: &mut rustc_lint::LintStore, sess: &Session, conf: &Conf) {
486     register_removed_non_tool_lints(store);
487
488     include!("lib.deprecated.rs");
489
490     include!("lib.register_lints.rs");
491     include!("lib.register_restriction.rs");
492     include!("lib.register_pedantic.rs");
493
494     #[cfg(feature = "internal")]
495     include!("lib.register_internal.rs");
496
497     include!("lib.register_all.rs");
498     include!("lib.register_style.rs");
499     include!("lib.register_complexity.rs");
500     include!("lib.register_correctness.rs");
501     include!("lib.register_suspicious.rs");
502     include!("lib.register_perf.rs");
503     include!("lib.register_cargo.rs");
504     include!("lib.register_nursery.rs");
505
506     #[cfg(feature = "internal")]
507     {
508         if std::env::var("ENABLE_METADATA_COLLECTION").eq(&Ok("1".to_string())) {
509             store.register_late_pass(|| Box::new(utils::internal_lints::metadata_collector::MetadataCollector::new()));
510             return;
511         }
512     }
513
514     // all the internal lints
515     #[cfg(feature = "internal")]
516     {
517         store.register_early_pass(|| Box::new(utils::internal_lints::ClippyLintsInternal));
518         store.register_early_pass(|| Box::new(utils::internal_lints::ProduceIce));
519         store.register_late_pass(|| Box::new(utils::internal_lints::CollapsibleCalls));
520         store.register_late_pass(|| Box::new(utils::internal_lints::CompilerLintFunctions::new()));
521         store.register_late_pass(|| Box::new(utils::internal_lints::IfChainStyle));
522         store.register_late_pass(|| Box::new(utils::internal_lints::InvalidPaths));
523         store.register_late_pass(|| Box::new(utils::internal_lints::InterningDefinedSymbol::default()));
524         store.register_late_pass(|| Box::new(utils::internal_lints::LintWithoutLintPass::default()));
525         store.register_late_pass(|| Box::new(utils::internal_lints::MatchTypeOnDiagItem));
526         store.register_late_pass(|| Box::new(utils::internal_lints::OuterExpnDataPass));
527         store.register_late_pass(|| Box::new(utils::internal_lints::MsrvAttrImpl));
528     }
529
530     store.register_late_pass(|| Box::new(utils::dump_hir::DumpHir));
531     store.register_late_pass(|| Box::new(utils::author::Author));
532     let await_holding_invalid_types = conf.await_holding_invalid_types.clone();
533     store.register_late_pass(move || {
534         Box::new(await_holding_invalid::AwaitHolding::new(
535             await_holding_invalid_types.clone(),
536         ))
537     });
538     store.register_late_pass(|| Box::new(serde_api::SerdeApi));
539     let vec_box_size_threshold = conf.vec_box_size_threshold;
540     let type_complexity_threshold = conf.type_complexity_threshold;
541     let avoid_breaking_exported_api = conf.avoid_breaking_exported_api;
542     store.register_late_pass(move || {
543         Box::new(types::Types::new(
544             vec_box_size_threshold,
545             type_complexity_threshold,
546             avoid_breaking_exported_api,
547         ))
548     });
549     store.register_late_pass(|| Box::new(booleans::NonminimalBool));
550     store.register_late_pass(|| Box::new(needless_bitwise_bool::NeedlessBitwiseBool));
551     store.register_late_pass(|| Box::new(eq_op::EqOp));
552     store.register_late_pass(|| Box::new(enum_clike::UnportableVariant));
553     store.register_late_pass(|| Box::new(float_literal::FloatLiteral));
554     let verbose_bit_mask_threshold = conf.verbose_bit_mask_threshold;
555     store.register_late_pass(move || Box::new(bit_mask::BitMask::new(verbose_bit_mask_threshold)));
556     store.register_late_pass(|| Box::new(ptr::Ptr));
557     store.register_late_pass(|| Box::new(ptr_eq::PtrEq));
558     store.register_late_pass(|| Box::new(needless_bool::NeedlessBool));
559     store.register_late_pass(|| Box::new(needless_bool::BoolComparison));
560     store.register_late_pass(|| Box::new(needless_for_each::NeedlessForEach));
561     store.register_late_pass(|| Box::new(misc::MiscLints));
562     store.register_late_pass(|| Box::new(eta_reduction::EtaReduction));
563     store.register_late_pass(|| Box::new(identity_op::IdentityOp));
564     store.register_late_pass(|| Box::new(erasing_op::ErasingOp));
565     store.register_late_pass(|| Box::new(mut_mut::MutMut));
566     store.register_late_pass(|| Box::new(mut_reference::UnnecessaryMutPassed));
567     store.register_late_pass(|| Box::new(len_zero::LenZero));
568     store.register_late_pass(|| Box::new(attrs::Attributes));
569     store.register_late_pass(|| Box::new(blocks_in_if_conditions::BlocksInIfConditions));
570     store.register_late_pass(|| Box::new(collapsible_match::CollapsibleMatch));
571     store.register_late_pass(|| Box::new(unicode::Unicode));
572     store.register_late_pass(|| Box::new(uninit_vec::UninitVec));
573     store.register_late_pass(|| Box::new(unit_hash::UnitHash));
574     store.register_late_pass(|| Box::new(unit_return_expecting_ord::UnitReturnExpectingOrd));
575     store.register_late_pass(|| Box::new(strings::StringAdd));
576     store.register_late_pass(|| Box::new(implicit_return::ImplicitReturn));
577     store.register_late_pass(|| Box::new(implicit_saturating_sub::ImplicitSaturatingSub));
578     store.register_late_pass(|| Box::new(default_numeric_fallback::DefaultNumericFallback));
579     store.register_late_pass(|| Box::new(inconsistent_struct_constructor::InconsistentStructConstructor));
580     store.register_late_pass(|| Box::new(non_octal_unix_permissions::NonOctalUnixPermissions));
581     store.register_early_pass(|| Box::new(unnecessary_self_imports::UnnecessarySelfImports));
582
583     let msrv = conf.msrv.as_ref().and_then(|s| {
584         parse_msrv(s, None, None).or_else(|| {
585             sess.err(&format!(
586                 "error reading Clippy's configuration file. `{}` is not a valid Rust version",
587                 s
588             ));
589             None
590         })
591     });
592
593     let avoid_breaking_exported_api = conf.avoid_breaking_exported_api;
594     let allow_expect_in_tests = conf.allow_expect_in_tests;
595     let allow_unwrap_in_tests = conf.allow_unwrap_in_tests;
596     store.register_late_pass(move || Box::new(approx_const::ApproxConstant::new(msrv)));
597     store.register_late_pass(move || {
598         Box::new(methods::Methods::new(
599             avoid_breaking_exported_api,
600             msrv,
601             allow_expect_in_tests,
602             allow_unwrap_in_tests,
603         ))
604     });
605     store.register_late_pass(move || Box::new(matches::Matches::new(msrv)));
606     store.register_early_pass(move || Box::new(manual_non_exhaustive::ManualNonExhaustiveStruct::new(msrv)));
607     store.register_late_pass(move || Box::new(manual_non_exhaustive::ManualNonExhaustiveEnum::new(msrv)));
608     store.register_late_pass(move || Box::new(manual_strip::ManualStrip::new(msrv)));
609     store.register_early_pass(move || Box::new(redundant_static_lifetimes::RedundantStaticLifetimes::new(msrv)));
610     store.register_early_pass(move || Box::new(redundant_field_names::RedundantFieldNames::new(msrv)));
611     store.register_late_pass(move || Box::new(checked_conversions::CheckedConversions::new(msrv)));
612     store.register_late_pass(move || Box::new(mem_replace::MemReplace::new(msrv)));
613     store.register_late_pass(move || Box::new(ranges::Ranges::new(msrv)));
614     store.register_late_pass(move || Box::new(from_over_into::FromOverInto::new(msrv)));
615     store.register_late_pass(move || Box::new(use_self::UseSelf::new(msrv)));
616     store.register_late_pass(move || Box::new(missing_const_for_fn::MissingConstForFn::new(msrv)));
617     store.register_late_pass(move || Box::new(needless_question_mark::NeedlessQuestionMark));
618     store.register_late_pass(move || Box::new(casts::Casts::new(msrv)));
619     store.register_early_pass(move || Box::new(unnested_or_patterns::UnnestedOrPatterns::new(msrv)));
620     store.register_late_pass(move || Box::new(map_clone::MapClone::new(msrv)));
621
622     store.register_late_pass(|| Box::new(size_of_in_element_count::SizeOfInElementCount));
623     store.register_late_pass(|| Box::new(same_name_method::SameNameMethod));
624     let max_suggested_slice_pattern_length = conf.max_suggested_slice_pattern_length;
625     store.register_late_pass(move || {
626         Box::new(index_refutable_slice::IndexRefutableSlice::new(
627             max_suggested_slice_pattern_length,
628             msrv,
629         ))
630     });
631     store.register_late_pass(|| Box::new(map_err_ignore::MapErrIgnore));
632     store.register_late_pass(|| Box::new(shadow::Shadow::default()));
633     store.register_late_pass(|| Box::new(unit_types::UnitTypes));
634     store.register_late_pass(|| Box::new(loops::Loops));
635     store.register_late_pass(|| Box::new(main_recursion::MainRecursion::default()));
636     store.register_late_pass(|| Box::new(lifetimes::Lifetimes));
637     store.register_late_pass(|| Box::new(entry::HashMapPass));
638     store.register_late_pass(|| Box::new(minmax::MinMaxPass));
639     store.register_late_pass(|| Box::new(open_options::OpenOptions));
640     store.register_late_pass(|| Box::new(zero_div_zero::ZeroDiv));
641     store.register_late_pass(|| Box::new(mutex_atomic::Mutex));
642     store.register_late_pass(|| Box::new(needless_update::NeedlessUpdate));
643     store.register_late_pass(|| Box::new(needless_borrowed_ref::NeedlessBorrowedRef));
644     store.register_late_pass(|| Box::new(borrow_deref_ref::BorrowDerefRef));
645     store.register_late_pass(|| Box::new(no_effect::NoEffect));
646     store.register_late_pass(|| Box::new(temporary_assignment::TemporaryAssignment));
647     store.register_late_pass(|| Box::new(transmute::Transmute));
648     let cognitive_complexity_threshold = conf.cognitive_complexity_threshold;
649     store.register_late_pass(move || {
650         Box::new(cognitive_complexity::CognitiveComplexity::new(
651             cognitive_complexity_threshold,
652         ))
653     });
654     let too_large_for_stack = conf.too_large_for_stack;
655     store.register_late_pass(move || Box::new(escape::BoxedLocal { too_large_for_stack }));
656     store.register_late_pass(move || Box::new(vec::UselessVec { too_large_for_stack }));
657     store.register_late_pass(|| Box::new(panic_unimplemented::PanicUnimplemented));
658     store.register_late_pass(|| Box::new(strings::StringLitAsBytes));
659     store.register_late_pass(|| Box::new(derive::Derive));
660     store.register_late_pass(|| Box::new(derivable_impls::DerivableImpls));
661     store.register_late_pass(|| Box::new(drop_forget_ref::DropForgetRef));
662     store.register_late_pass(|| Box::new(empty_enum::EmptyEnum));
663     store.register_late_pass(|| Box::new(absurd_extreme_comparisons::AbsurdExtremeComparisons));
664     store.register_late_pass(|| Box::new(invalid_upcast_comparisons::InvalidUpcastComparisons));
665     store.register_late_pass(|| Box::new(regex::Regex));
666     store.register_late_pass(|| Box::new(copies::CopyAndPaste));
667     store.register_late_pass(|| Box::new(copy_iterator::CopyIterator));
668     store.register_late_pass(|| Box::new(format::UselessFormat));
669     store.register_late_pass(|| Box::new(swap::Swap));
670     store.register_late_pass(|| Box::new(overflow_check_conditional::OverflowCheckConditional));
671     store.register_late_pass(|| Box::new(new_without_default::NewWithoutDefault::default()));
672     let blacklisted_names = conf.blacklisted_names.iter().cloned().collect::<FxHashSet<_>>();
673     store.register_late_pass(move || Box::new(blacklisted_name::BlacklistedName::new(blacklisted_names.clone())));
674     let too_many_arguments_threshold = conf.too_many_arguments_threshold;
675     let too_many_lines_threshold = conf.too_many_lines_threshold;
676     store.register_late_pass(move || {
677         Box::new(functions::Functions::new(
678             too_many_arguments_threshold,
679             too_many_lines_threshold,
680         ))
681     });
682     let doc_valid_idents = conf.doc_valid_idents.iter().cloned().collect::<FxHashSet<_>>();
683     store.register_late_pass(move || Box::new(doc::DocMarkdown::new(doc_valid_idents.clone())));
684     store.register_late_pass(|| Box::new(neg_multiply::NegMultiply));
685     store.register_late_pass(|| Box::new(mem_forget::MemForget));
686     store.register_late_pass(|| Box::new(arithmetic::Arithmetic::default()));
687     store.register_late_pass(|| Box::new(assign_ops::AssignOps));
688     store.register_late_pass(|| Box::new(let_if_seq::LetIfSeq));
689     store.register_late_pass(|| Box::new(mixed_read_write_in_expression::EvalOrderDependence));
690     store.register_late_pass(|| Box::new(missing_doc::MissingDoc::new()));
691     store.register_late_pass(|| Box::new(missing_inline::MissingInline));
692     store.register_late_pass(move || Box::new(exhaustive_items::ExhaustiveItems));
693     store.register_late_pass(|| Box::new(match_result_ok::MatchResultOk));
694     store.register_late_pass(|| Box::new(partialeq_ne_impl::PartialEqNeImpl));
695     store.register_late_pass(|| Box::new(unused_io_amount::UnusedIoAmount));
696     let enum_variant_size_threshold = conf.enum_variant_size_threshold;
697     store.register_late_pass(move || Box::new(large_enum_variant::LargeEnumVariant::new(enum_variant_size_threshold)));
698     store.register_late_pass(|| Box::new(explicit_write::ExplicitWrite));
699     store.register_late_pass(|| Box::new(needless_pass_by_value::NeedlessPassByValue));
700     let pass_by_ref_or_value = pass_by_ref_or_value::PassByRefOrValue::new(
701         conf.trivial_copy_size_limit,
702         conf.pass_by_value_size_limit,
703         conf.avoid_breaking_exported_api,
704         &sess.target,
705     );
706     store.register_late_pass(move || Box::new(pass_by_ref_or_value));
707     store.register_late_pass(|| Box::new(ref_option_ref::RefOptionRef));
708     store.register_late_pass(|| Box::new(try_err::TryErr));
709     store.register_late_pass(|| Box::new(bytecount::ByteCount));
710     store.register_late_pass(|| Box::new(infinite_iter::InfiniteIter));
711     store.register_late_pass(|| Box::new(inline_fn_without_body::InlineFnWithoutBody));
712     store.register_late_pass(|| Box::new(useless_conversion::UselessConversion::default()));
713     store.register_late_pass(|| Box::new(implicit_hasher::ImplicitHasher));
714     store.register_late_pass(|| Box::new(fallible_impl_from::FallibleImplFrom));
715     store.register_late_pass(|| Box::new(double_comparison::DoubleComparisons));
716     store.register_late_pass(|| Box::new(question_mark::QuestionMark));
717     store.register_early_pass(|| Box::new(suspicious_operation_groupings::SuspiciousOperationGroupings));
718     store.register_late_pass(|| Box::new(suspicious_trait_impl::SuspiciousImpl));
719     store.register_late_pass(|| Box::new(map_unit_fn::MapUnit));
720     store.register_late_pass(|| Box::new(inherent_impl::MultipleInherentImpl));
721     store.register_late_pass(|| Box::new(neg_cmp_op_on_partial_ord::NoNegCompOpForPartialOrd));
722     store.register_late_pass(|| Box::new(unwrap::Unwrap));
723     store.register_late_pass(|| Box::new(duration_subsec::DurationSubsec));
724     store.register_late_pass(|| Box::new(indexing_slicing::IndexingSlicing));
725     store.register_late_pass(|| Box::new(non_copy_const::NonCopyConst));
726     store.register_late_pass(|| Box::new(ptr_offset_with_cast::PtrOffsetWithCast));
727     store.register_late_pass(|| Box::new(redundant_clone::RedundantClone));
728     store.register_late_pass(|| Box::new(slow_vector_initialization::SlowVectorInit));
729     store.register_late_pass(|| Box::new(unnecessary_sort_by::UnnecessarySortBy));
730     store.register_late_pass(move || Box::new(unnecessary_wraps::UnnecessaryWraps::new(avoid_breaking_exported_api)));
731     store.register_late_pass(|| Box::new(assertions_on_constants::AssertionsOnConstants));
732     store.register_late_pass(|| Box::new(transmuting_null::TransmutingNull));
733     store.register_late_pass(|| Box::new(path_buf_push_overwrite::PathBufPushOverwrite));
734     store.register_late_pass(|| Box::new(integer_division::IntegerDivision));
735     store.register_late_pass(|| Box::new(inherent_to_string::InherentToString));
736     let max_trait_bounds = conf.max_trait_bounds;
737     store.register_late_pass(move || Box::new(trait_bounds::TraitBounds::new(max_trait_bounds)));
738     store.register_late_pass(|| Box::new(comparison_chain::ComparisonChain));
739     store.register_late_pass(|| Box::new(mut_key::MutableKeyType));
740     store.register_late_pass(|| Box::new(modulo_arithmetic::ModuloArithmetic));
741     store.register_early_pass(|| Box::new(reference::DerefAddrOf));
742     store.register_early_pass(|| Box::new(double_parens::DoubleParens));
743     store.register_late_pass(|| Box::new(format_impl::FormatImpl::new()));
744     store.register_early_pass(|| Box::new(unsafe_removed_from_name::UnsafeNameRemoval));
745     store.register_early_pass(|| Box::new(else_if_without_else::ElseIfWithoutElse));
746     store.register_early_pass(|| Box::new(int_plus_one::IntPlusOne));
747     store.register_early_pass(|| Box::new(formatting::Formatting));
748     store.register_early_pass(|| Box::new(misc_early::MiscEarlyLints));
749     store.register_early_pass(|| Box::new(redundant_closure_call::RedundantClosureCall));
750     store.register_late_pass(|| Box::new(redundant_closure_call::RedundantClosureCall));
751     store.register_early_pass(|| Box::new(unused_unit::UnusedUnit));
752     store.register_late_pass(|| Box::new(returns::Return));
753     store.register_early_pass(|| Box::new(collapsible_if::CollapsibleIf));
754     store.register_early_pass(|| Box::new(items_after_statements::ItemsAfterStatements));
755     store.register_early_pass(|| Box::new(precedence::Precedence));
756     store.register_early_pass(|| Box::new(needless_continue::NeedlessContinue));
757     store.register_early_pass(|| Box::new(redundant_else::RedundantElse));
758     store.register_late_pass(|| Box::new(create_dir::CreateDir));
759     store.register_early_pass(|| Box::new(needless_arbitrary_self_type::NeedlessArbitrarySelfType));
760     let literal_representation_lint_fraction_readability = conf.unreadable_literal_lint_fractions;
761     store.register_early_pass(move || {
762         Box::new(literal_representation::LiteralDigitGrouping::new(
763             literal_representation_lint_fraction_readability,
764         ))
765     });
766     let literal_representation_threshold = conf.literal_representation_threshold;
767     store.register_early_pass(move || {
768         Box::new(literal_representation::DecimalLiteralRepresentation::new(
769             literal_representation_threshold,
770         ))
771     });
772     let enum_variant_name_threshold = conf.enum_variant_name_threshold;
773     store.register_late_pass(move || {
774         Box::new(enum_variants::EnumVariantNames::new(
775             enum_variant_name_threshold,
776             avoid_breaking_exported_api,
777         ))
778     });
779     store.register_early_pass(|| Box::new(tabs_in_doc_comments::TabsInDocComments));
780     let upper_case_acronyms_aggressive = conf.upper_case_acronyms_aggressive;
781     store.register_late_pass(move || {
782         Box::new(upper_case_acronyms::UpperCaseAcronyms::new(
783             avoid_breaking_exported_api,
784             upper_case_acronyms_aggressive,
785         ))
786     });
787     store.register_late_pass(|| Box::new(default::Default::default()));
788     store.register_late_pass(|| Box::new(unused_self::UnusedSelf));
789     store.register_late_pass(|| Box::new(mutable_debug_assertion::DebugAssertWithMutCall));
790     store.register_late_pass(|| Box::new(exit::Exit));
791     store.register_late_pass(|| Box::new(to_digit_is_some::ToDigitIsSome));
792     let array_size_threshold = conf.array_size_threshold;
793     store.register_late_pass(move || Box::new(large_stack_arrays::LargeStackArrays::new(array_size_threshold)));
794     store.register_late_pass(move || Box::new(large_const_arrays::LargeConstArrays::new(array_size_threshold)));
795     store.register_late_pass(|| Box::new(floating_point_arithmetic::FloatingPointArithmetic));
796     store.register_early_pass(|| Box::new(as_conversions::AsConversions));
797     store.register_late_pass(|| Box::new(let_underscore::LetUnderscore));
798     store.register_early_pass(|| Box::new(single_component_path_imports::SingleComponentPathImports));
799     let max_fn_params_bools = conf.max_fn_params_bools;
800     let max_struct_bools = conf.max_struct_bools;
801     store.register_early_pass(move || {
802         Box::new(excessive_bools::ExcessiveBools::new(
803             max_struct_bools,
804             max_fn_params_bools,
805         ))
806     });
807     store.register_early_pass(|| Box::new(option_env_unwrap::OptionEnvUnwrap));
808     let warn_on_all_wildcard_imports = conf.warn_on_all_wildcard_imports;
809     store.register_late_pass(move || Box::new(wildcard_imports::WildcardImports::new(warn_on_all_wildcard_imports)));
810     store.register_late_pass(|| Box::new(verbose_file_reads::VerboseFileReads));
811     store.register_late_pass(|| Box::new(redundant_pub_crate::RedundantPubCrate::default()));
812     store.register_late_pass(|| Box::new(unnamed_address::UnnamedAddress));
813     store.register_late_pass(|| Box::new(dereference::Dereferencing::default()));
814     store.register_late_pass(|| Box::new(option_if_let_else::OptionIfLetElse));
815     store.register_late_pass(|| Box::new(future_not_send::FutureNotSend));
816     store.register_late_pass(|| Box::new(if_let_mutex::IfLetMutex));
817     store.register_late_pass(|| Box::new(if_not_else::IfNotElse));
818     store.register_late_pass(|| Box::new(equatable_if_let::PatternEquality));
819     store.register_late_pass(|| Box::new(mut_mutex_lock::MutMutexLock));
820     store.register_late_pass(|| Box::new(match_on_vec_items::MatchOnVecItems));
821     store.register_late_pass(|| Box::new(manual_async_fn::ManualAsyncFn));
822     store.register_late_pass(|| Box::new(vec_resize_to_zero::VecResizeToZero));
823     store.register_late_pass(|| Box::new(panic_in_result_fn::PanicInResultFn));
824     let single_char_binding_names_threshold = conf.single_char_binding_names_threshold;
825     store.register_early_pass(move || {
826         Box::new(non_expressive_names::NonExpressiveNames {
827             single_char_binding_names_threshold,
828         })
829     });
830     let macro_matcher = conf.standard_macro_braces.iter().cloned().collect::<FxHashSet<_>>();
831     store.register_early_pass(move || Box::new(nonstandard_macro_braces::MacroBraces::new(&macro_matcher)));
832     store.register_late_pass(|| Box::new(macro_use::MacroUseImports::default()));
833     store.register_late_pass(|| Box::new(pattern_type_mismatch::PatternTypeMismatch));
834     store.register_late_pass(|| Box::new(stable_sort_primitive::StableSortPrimitive));
835     store.register_late_pass(|| Box::new(repeat_once::RepeatOnce));
836     store.register_late_pass(|| Box::new(unwrap_in_result::UnwrapInResult));
837     store.register_late_pass(|| Box::new(self_assignment::SelfAssignment));
838     store.register_late_pass(|| Box::new(manual_unwrap_or::ManualUnwrapOr));
839     store.register_late_pass(|| Box::new(manual_ok_or::ManualOkOr));
840     store.register_late_pass(|| Box::new(float_equality_without_abs::FloatEqualityWithoutAbs));
841     store.register_late_pass(|| Box::new(semicolon_if_nothing_returned::SemicolonIfNothingReturned));
842     store.register_late_pass(|| Box::new(async_yields_async::AsyncYieldsAsync));
843     let disallowed_methods = conf.disallowed_methods.clone();
844     store.register_late_pass(move || Box::new(disallowed_methods::DisallowedMethods::new(disallowed_methods.clone())));
845     store.register_early_pass(|| Box::new(asm_syntax::InlineAsmX86AttSyntax));
846     store.register_early_pass(|| Box::new(asm_syntax::InlineAsmX86IntelSyntax));
847     store.register_late_pass(|| Box::new(empty_drop::EmptyDrop));
848     store.register_late_pass(|| Box::new(strings::StrToString));
849     store.register_late_pass(|| Box::new(strings::StringToString));
850     store.register_late_pass(|| Box::new(zero_sized_map_values::ZeroSizedMapValues));
851     store.register_late_pass(|| Box::new(vec_init_then_push::VecInitThenPush::default()));
852     store.register_late_pass(|| {
853         Box::new(case_sensitive_file_extension_comparisons::CaseSensitiveFileExtensionComparisons)
854     });
855     store.register_late_pass(|| Box::new(redundant_slicing::RedundantSlicing));
856     store.register_late_pass(|| Box::new(from_str_radix_10::FromStrRadix10));
857     store.register_late_pass(|| Box::new(manual_map::ManualMap));
858     store.register_late_pass(move || Box::new(if_then_some_else_none::IfThenSomeElseNone::new(msrv)));
859     store.register_late_pass(|| Box::new(bool_assert_comparison::BoolAssertComparison));
860     store.register_early_pass(move || Box::new(module_style::ModStyle));
861     store.register_late_pass(|| Box::new(unused_async::UnusedAsync));
862     let disallowed_types = conf.disallowed_types.clone();
863     store.register_late_pass(move || Box::new(disallowed_types::DisallowedTypes::new(disallowed_types.clone())));
864     let import_renames = conf.enforced_import_renames.clone();
865     store.register_late_pass(move || {
866         Box::new(missing_enforced_import_rename::ImportRename::new(
867             import_renames.clone(),
868         ))
869     });
870     let scripts = conf.allowed_scripts.clone();
871     store.register_early_pass(move || Box::new(disallowed_script_idents::DisallowedScriptIdents::new(&scripts)));
872     store.register_late_pass(|| Box::new(strlen_on_c_strings::StrlenOnCStrings));
873     store.register_late_pass(move || Box::new(self_named_constructors::SelfNamedConstructors));
874     store.register_late_pass(move || Box::new(iter_not_returning_iterator::IterNotReturningIterator));
875     store.register_late_pass(move || Box::new(manual_assert::ManualAssert));
876     let enable_raw_pointer_heuristic_for_send = conf.enable_raw_pointer_heuristic_for_send;
877     store.register_late_pass(move || {
878         Box::new(non_send_fields_in_send_ty::NonSendFieldInSendTy::new(
879             enable_raw_pointer_heuristic_for_send,
880         ))
881     });
882     store.register_late_pass(move || Box::new(undocumented_unsafe_blocks::UndocumentedUnsafeBlocks));
883     store.register_late_pass(|| Box::new(match_str_case_mismatch::MatchStrCaseMismatch));
884     store.register_late_pass(move || Box::new(format_args::FormatArgs));
885     store.register_late_pass(|| Box::new(trailing_empty_array::TrailingEmptyArray));
886     store.register_early_pass(|| Box::new(octal_escapes::OctalEscapes));
887     store.register_late_pass(|| Box::new(needless_late_init::NeedlessLateInit));
888     store.register_late_pass(|| Box::new(return_self_not_must_use::ReturnSelfNotMustUse));
889     store.register_late_pass(|| Box::new(init_numbered_fields::NumberedFields));
890     store.register_early_pass(|| Box::new(single_char_lifetime_names::SingleCharLifetimeNames));
891     store.register_late_pass(move || Box::new(borrow_as_ptr::BorrowAsPtr::new(msrv)));
892     store.register_late_pass(move || Box::new(manual_bits::ManualBits::new(msrv)));
893     store.register_late_pass(|| Box::new(default_union_representation::DefaultUnionRepresentation));
894     store.register_early_pass(|| Box::new(doc_link_with_quotes::DocLinkWithQuotes));
895     store.register_late_pass(|| Box::new(only_used_in_recursion::OnlyUsedInRecursion));
896     store.register_late_pass(|| Box::new(significant_drop_in_scrutinee::SignificantDropInScrutinee));
897     let allow_dbg_in_tests = conf.allow_dbg_in_tests;
898     store.register_late_pass(move || Box::new(dbg_macro::DbgMacro::new(allow_dbg_in_tests)));
899     let cargo_ignore_publish = conf.cargo_ignore_publish;
900     store.register_late_pass(move || {
901         Box::new(cargo::Cargo {
902             ignore_publish: cargo_ignore_publish,
903         })
904     });
905     store.register_early_pass(|| Box::new(crate_in_macro_def::CrateInMacroDef));
906     store.register_early_pass(|| Box::new(empty_structs_with_brackets::EmptyStructsWithBrackets));
907     store.register_late_pass(|| Box::new(unnecessary_owned_empty_strings::UnnecessaryOwnedEmptyStrings));
908     store.register_early_pass(|| Box::new(pub_use::PubUse));
909     store.register_late_pass(|| Box::new(format_push_string::FormatPushString));
910     store.register_late_pass(|| Box::new(bytes_count_to_len::BytesCountToLen));
911     let max_include_file_size = conf.max_include_file_size;
912     store.register_late_pass(move || Box::new(large_include_file::LargeIncludeFile::new(max_include_file_size)));
913     store.register_late_pass(|| Box::new(strings::TrimSplitWhitespace));
914     store.register_late_pass(|| Box::new(rc_clone_in_vec_init::RcCloneInVecInit));
915     store.register_early_pass(|| Box::new(duplicate_mod::DuplicateMod::default()));
916     store.register_late_pass(|| Box::new(get_first::GetFirst));
917     store.register_early_pass(|| Box::new(unused_rounding::UnusedRounding));
918     store.register_early_pass(move || Box::new(almost_complete_letter_range::AlmostCompleteLetterRange::new(msrv)));
919     store.register_late_pass(|| Box::new(swap_ptr_to_ref::SwapPtrToRef));
920     // add lints here, do not remove this comment, it's used in `new_lint`
921 }
922
923 #[rustfmt::skip]
924 fn register_removed_non_tool_lints(store: &mut rustc_lint::LintStore) {
925     store.register_removed(
926         "should_assert_eq",
927         "`assert!()` will be more flexible with RFC 2011",
928     );
929     store.register_removed(
930         "extend_from_slice",
931         "`.extend_from_slice(_)` is a faster way to extend a Vec by a slice",
932     );
933     store.register_removed(
934         "range_step_by_zero",
935         "`iterator.step_by(0)` panics nowadays",
936     );
937     store.register_removed(
938         "unstable_as_slice",
939         "`Vec::as_slice` has been stabilized in 1.7",
940     );
941     store.register_removed(
942         "unstable_as_mut_slice",
943         "`Vec::as_mut_slice` has been stabilized in 1.7",
944     );
945     store.register_removed(
946         "misaligned_transmute",
947         "this lint has been split into cast_ptr_alignment and transmute_ptr_to_ptr",
948     );
949     store.register_removed(
950         "assign_ops",
951         "using compound assignment operators (e.g., `+=`) is harmless",
952     );
953     store.register_removed(
954         "if_let_redundant_pattern_matching",
955         "this lint has been changed to redundant_pattern_matching",
956     );
957     store.register_removed(
958         "unsafe_vector_initialization",
959         "the replacement suggested by this lint had substantially different behavior",
960     );
961     store.register_removed(
962         "reverse_range_loop",
963         "this lint is now included in reversed_empty_ranges",
964     );
965 }
966
967 /// Register renamed lints.
968 ///
969 /// Used in `./src/driver.rs`.
970 pub fn register_renamed(ls: &mut rustc_lint::LintStore) {
971     for (old_name, new_name) in renamed_lints::RENAMED_LINTS {
972         ls.register_renamed(old_name, new_name);
973     }
974 }
975
976 // only exists to let the dogfood integration test works.
977 // Don't run clippy as an executable directly
978 #[allow(dead_code)]
979 fn main() {
980     panic!("Please use the cargo-clippy executable");
981 }