diff options
45 files changed, 291 insertions, 56 deletions
diff --git a/Cargo.lock b/Cargo.lock index 4d54b5aeb4e..01e814e7d7f 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -4029,6 +4029,7 @@ dependencies = [ "rustc_hir", "rustc_hir_pretty", "rustc_index", + "rustc_lint_defs", "rustc_macros", "rustc_query_system", "rustc_serialize", diff --git a/compiler/rustc_ast/src/attr/mod.rs b/compiler/rustc_ast/src/attr/mod.rs index b73412a4b1d..9311af28f54 100644 --- a/compiler/rustc_ast/src/attr/mod.rs +++ b/compiler/rustc_ast/src/attr/mod.rs @@ -223,7 +223,7 @@ impl AttrItem { self.args.span().map_or(self.path.span, |args_span| self.path.span.to(args_span)) } - fn meta_item_list(&self) -> Option<ThinVec<MetaItemInner>> { + pub fn meta_item_list(&self) -> Option<ThinVec<MetaItemInner>> { match &self.args { AttrArgs::Delimited(args) if args.delim == Delimiter::Parenthesis => { MetaItemKind::list_from_tokens(args.tokens.clone()) diff --git a/compiler/rustc_lint/src/builtin.rs b/compiler/rustc_lint/src/builtin.rs index 70d51c92750..3ee4980a948 100644 --- a/compiler/rustc_lint/src/builtin.rs +++ b/compiler/rustc_lint/src/builtin.rs @@ -73,7 +73,6 @@ use crate::{ EarlyContext, EarlyLintPass, LateContext, LateLintPass, Level, LintContext, fluent_generated as fluent, }; - declare_lint! { /// The `while_true` lint detects `while true { }`. /// @@ -241,7 +240,8 @@ declare_lint! { /// behavior. UNSAFE_CODE, Allow, - "usage of `unsafe` code and other potentially unsound constructs" + "usage of `unsafe` code and other potentially unsound constructs", + @eval_always = true } declare_lint_pass!(UnsafeCode => [UNSAFE_CODE]); @@ -389,6 +389,7 @@ declare_lint! { report_in_external_macro } +#[derive(Default)] pub struct MissingDoc; impl_lint_pass!(MissingDoc => [MISSING_DOCS]); @@ -819,8 +820,8 @@ pub struct DeprecatedAttr { impl_lint_pass!(DeprecatedAttr => []); -impl DeprecatedAttr { - pub fn new() -> DeprecatedAttr { +impl Default for DeprecatedAttr { + fn default() -> Self { DeprecatedAttr { depr_attrs: deprecated_attributes() } } } diff --git a/compiler/rustc_lint/src/early.rs b/compiler/rustc_lint/src/early.rs index a6210aa520f..e2247d3a1f6 100644 --- a/compiler/rustc_lint/src/early.rs +++ b/compiler/rustc_lint/src/early.rs @@ -309,6 +309,9 @@ impl LintPass for RuntimeCombinedEarlyLintPass<'_> { fn name(&self) -> &'static str { panic!() } + fn get_lints(&self) -> crate::LintVec { + panic!() + } } macro_rules! impl_early_lint_pass { diff --git a/compiler/rustc_lint/src/internal.rs b/compiler/rustc_lint/src/internal.rs index 94cc58e4956..7dec6dbdc05 100644 --- a/compiler/rustc_lint/src/internal.rs +++ b/compiler/rustc_lint/src/internal.rs @@ -429,7 +429,8 @@ declare_tool_lint! { pub rustc::UNTRANSLATABLE_DIAGNOSTIC, Deny, "prevent creation of diagnostics which cannot be translated", - report_in_external_macro: true + report_in_external_macro: true, + @eval_always = true } declare_tool_lint! { @@ -442,7 +443,8 @@ declare_tool_lint! { pub rustc::DIAGNOSTIC_OUTSIDE_OF_IMPL, Deny, "prevent diagnostic creation outside of `Diagnostic`/`Subdiagnostic`/`LintDiagnostic` impls", - report_in_external_macro: true + report_in_external_macro: true, + @eval_always = true } declare_lint_pass!(Diagnostics => [UNTRANSLATABLE_DIAGNOSTIC, DIAGNOSTIC_OUTSIDE_OF_IMPL]); diff --git a/compiler/rustc_lint/src/late.rs b/compiler/rustc_lint/src/late.rs index 6d5903ac467..9b1877599ba 100644 --- a/compiler/rustc_lint/src/late.rs +++ b/compiler/rustc_lint/src/late.rs @@ -26,11 +26,12 @@ use rustc_middle::hir::nested_filter; use rustc_middle::ty::{self, TyCtxt}; use rustc_session::Session; use rustc_session::lint::LintPass; +use rustc_session::lint::builtin::HardwiredLints; use rustc_span::Span; use tracing::debug; use crate::passes::LateLintPassObject; -use crate::{LateContext, LateLintPass, LintStore}; +use crate::{LateContext, LateLintPass, LintId, LintStore}; /// Extract the [`LintStore`] from [`Session`]. /// @@ -326,6 +327,9 @@ impl LintPass for RuntimeCombinedLateLintPass<'_, '_> { fn name(&self) -> &'static str { panic!() } + fn get_lints(&self) -> crate::LintVec { + panic!() + } } macro_rules! impl_late_lint_pass { @@ -361,13 +365,20 @@ pub fn late_lint_mod<'tcx, T: LateLintPass<'tcx> + 'tcx>( // Note: `passes` is often empty. In that case, it's faster to run // `builtin_lints` directly rather than bundling it up into the // `RuntimeCombinedLateLintPass`. - let late_module_passes = &unerased_lint_store(tcx.sess).late_module_passes; - if late_module_passes.is_empty() { + let store = unerased_lint_store(tcx.sess); + + if store.late_module_passes.is_empty() { late_lint_mod_inner(tcx, module_def_id, context, builtin_lints); } else { - let mut passes: Vec<_> = late_module_passes.iter().map(|mk_pass| (mk_pass)(tcx)).collect(); - passes.push(Box::new(builtin_lints)); - let pass = RuntimeCombinedLateLintPass { passes: &mut passes[..] }; + let builtin_lints = Box::new(builtin_lints) as Box<dyn LateLintPass<'tcx>>; + let mut binding = store + .late_module_passes + .iter() + .map(|mk_pass| (mk_pass)(tcx)) + .chain(std::iter::once(builtin_lints)) + .collect::<Vec<_>>(); + + let pass = RuntimeCombinedLateLintPass { passes: binding.as_mut_slice() }; late_lint_mod_inner(tcx, module_def_id, context, pass); } } @@ -398,7 +409,7 @@ fn late_lint_mod_inner<'tcx, T: LateLintPass<'tcx>>( fn late_lint_crate<'tcx>(tcx: TyCtxt<'tcx>) { // Note: `passes` is often empty. - let mut passes: Vec<_> = + let passes: Vec<_> = unerased_lint_store(tcx.sess).late_passes.iter().map(|mk_pass| (mk_pass)(tcx)).collect(); if passes.is_empty() { @@ -416,7 +427,18 @@ fn late_lint_crate<'tcx>(tcx: TyCtxt<'tcx>) { only_module: false, }; - let pass = RuntimeCombinedLateLintPass { passes: &mut passes[..] }; + let lints_that_dont_need_to_run = tcx.lints_that_dont_need_to_run(()); + + let mut filtered_passes: Vec<Box<dyn LateLintPass<'tcx>>> = passes + .into_iter() + .filter(|pass| { + let lints = (**pass).get_lints(); + !lints.iter().all(|lint| lints_that_dont_need_to_run.contains(&LintId::of(lint))) + }) + .collect(); + + filtered_passes.push(Box::new(HardwiredLints)); + let pass = RuntimeCombinedLateLintPass { passes: &mut filtered_passes[..] }; late_lint_crate_inner(tcx, context, pass); } diff --git a/compiler/rustc_lint/src/levels.rs b/compiler/rustc_lint/src/levels.rs index ff2ae69e1db..97a95787422 100644 --- a/compiler/rustc_lint/src/levels.rs +++ b/compiler/rustc_lint/src/levels.rs @@ -1,9 +1,9 @@ use rustc_ast_pretty::pprust; -use rustc_data_structures::fx::FxIndexMap; +use rustc_data_structures::fx::{FxIndexMap, FxIndexSet}; use rustc_errors::{Diag, LintDiagnostic, MultiSpan}; use rustc_feature::{Features, GateIssue}; -use rustc_hir::HirId; use rustc_hir::intravisit::{self, Visitor}; +use rustc_hir::{CRATE_HIR_ID, HirId}; use rustc_index::IndexVec; use rustc_middle::bug; use rustc_middle::hir::nested_filter; @@ -115,6 +115,38 @@ impl LintLevelSets { } } +fn lints_that_dont_need_to_run(tcx: TyCtxt<'_>, (): ()) -> FxIndexSet<LintId> { + let store = unerased_lint_store(&tcx.sess); + + let map = tcx.shallow_lint_levels_on(rustc_hir::CRATE_OWNER_ID); + + let dont_need_to_run: FxIndexSet<LintId> = store + .get_lints() + .into_iter() + .filter_map(|lint| { + if !lint.eval_always { + let lint_level = map.lint_level_id_at_node(tcx, LintId::of(lint), CRATE_HIR_ID); + if matches!(lint_level, (Level::Allow, ..)) + || (matches!(lint_level, (.., LintLevelSource::Default))) + && lint.default_level(tcx.sess.edition()) == Level::Allow + { + Some(LintId::of(lint)) + } else { + None + } + } else { + None + } + }) + .collect(); + + let mut visitor = LintLevelMaximum { tcx, dont_need_to_run }; + visitor.process_opts(); + tcx.hir().walk_attributes(&mut visitor); + + visitor.dont_need_to_run +} + #[instrument(level = "trace", skip(tcx), ret)] fn shallow_lint_levels_on(tcx: TyCtxt<'_>, owner: hir::OwnerId) -> ShallowLintLevelMap { let store = unerased_lint_store(tcx.sess); @@ -301,6 +333,83 @@ impl<'tcx> Visitor<'tcx> for LintLevelsBuilder<'_, LintLevelQueryMap<'tcx>> { } } +/// Visitor with the only function of visiting every item-like in a crate and +/// computing the highest level that every lint gets put to. +/// +/// E.g., if a crate has a global #![allow(lint)] attribute, but a single item +/// uses #[warn(lint)], this visitor will set that lint level as `Warn` +struct LintLevelMaximum<'tcx> { + tcx: TyCtxt<'tcx>, + /// The actual list of detected lints. + dont_need_to_run: FxIndexSet<LintId>, +} + +impl<'tcx> LintLevelMaximum<'tcx> { + fn process_opts(&mut self) { + let store = unerased_lint_store(self.tcx.sess); + for (lint_group, level) in &self.tcx.sess.opts.lint_opts { + if *level != Level::Allow { + let Ok(lints) = store.find_lints(lint_group) else { + return; + }; + for lint in lints { + self.dont_need_to_run.swap_remove(&lint); + } + } + } + } +} + +impl<'tcx> Visitor<'tcx> for LintLevelMaximum<'tcx> { + type NestedFilter = nested_filter::All; + + fn nested_visit_map(&mut self) -> Self::Map { + self.tcx.hir() + } + + /// FIXME(blyxyas): In a future revision, we should also graph #![allow]s, + /// but that is handled with more care + fn visit_attribute(&mut self, attribute: &'tcx ast::Attribute) { + if matches!( + Level::from_attr(attribute), + Some( + Level::Warn + | Level::Deny + | Level::Forbid + | Level::Expect(..) + | Level::ForceWarn(..), + ) + ) { + let store = unerased_lint_store(self.tcx.sess); + let Some(meta) = attribute.meta() else { return }; + // Lint attributes are always a metalist inside a + // metalist (even with just one lint). + let Some(meta_item_list) = meta.meta_item_list() else { return }; + + for meta_list in meta_item_list { + // Convert Path to String + let Some(meta_item) = meta_list.meta_item() else { return }; + let ident: &str = &meta_item + .path + .segments + .iter() + .map(|segment| segment.ident.as_str()) + .collect::<Vec<&str>>() + .join("::"); + let Ok(lints) = store.find_lints( + // Lint attributes can only have literals + ident, + ) else { + return; + }; + for lint in lints { + self.dont_need_to_run.swap_remove(&lint); + } + } + } + } +} + pub struct LintLevelsBuilder<'s, P> { sess: &'s Session, features: &'s Features, @@ -934,7 +1043,7 @@ impl<'s, P: LintLevelsProvider> LintLevelsBuilder<'s, P> { } pub(crate) fn provide(providers: &mut Providers) { - *providers = Providers { shallow_lint_levels_on, ..*providers }; + *providers = Providers { shallow_lint_levels_on, lints_that_dont_need_to_run, ..*providers }; } pub(crate) fn parse_lint_and_tool_name(lint_name: &str) -> (Option<Symbol>, &str) { diff --git a/compiler/rustc_lint/src/lib.rs b/compiler/rustc_lint/src/lib.rs index a7faab0868d..5389860e23b 100644 --- a/compiler/rustc_lint/src/lib.rs +++ b/compiler/rustc_lint/src/lib.rs @@ -170,7 +170,7 @@ early_lint_methods!( [ pub BuiltinCombinedEarlyLintPass, [ - UnusedParens: UnusedParens::new(), + UnusedParens: UnusedParens::default(), UnusedBraces: UnusedBraces, UnusedImportBraces: UnusedImportBraces, UnsafeCode: UnsafeCode, @@ -178,7 +178,7 @@ early_lint_methods!( AnonymousParameters: AnonymousParameters, EllipsisInclusiveRangePatterns: EllipsisInclusiveRangePatterns::default(), NonCamelCaseTypes: NonCamelCaseTypes, - DeprecatedAttr: DeprecatedAttr::new(), + DeprecatedAttr: DeprecatedAttr::default(), WhileTrue: WhileTrue, NonAsciiIdents: NonAsciiIdents, HiddenUnicodeCodepoints: HiddenUnicodeCodepoints, @@ -199,7 +199,6 @@ late_lint_methods!( ForLoopsOverFallibles: ForLoopsOverFallibles, DerefIntoDynSupertrait: DerefIntoDynSupertrait, DropForgetUseless: DropForgetUseless, - HardwiredLints: HardwiredLints, ImproperCTypesDeclarations: ImproperCTypesDeclarations, ImproperCTypesDefinitions: ImproperCTypesDefinitions, InvalidFromUtf8: InvalidFromUtf8, @@ -280,6 +279,7 @@ fn register_builtins(store: &mut LintStore) { store.register_lints(&BuiltinCombinedEarlyLintPass::get_lints()); store.register_lints(&BuiltinCombinedModuleLateLintPass::get_lints()); store.register_lints(&foreign_modules::get_lints()); + store.register_lints(&HardwiredLints::lint_vec()); add_lint_group!( "nonstandard_style", @@ -602,25 +602,25 @@ fn register_builtins(store: &mut LintStore) { } fn register_internals(store: &mut LintStore) { - store.register_lints(&LintPassImpl::get_lints()); + store.register_lints(&LintPassImpl::lint_vec()); store.register_early_pass(|| Box::new(LintPassImpl)); - store.register_lints(&DefaultHashTypes::get_lints()); + store.register_lints(&DefaultHashTypes::lint_vec()); store.register_late_mod_pass(|_| Box::new(DefaultHashTypes)); - store.register_lints(&QueryStability::get_lints()); + store.register_lints(&QueryStability::lint_vec()); store.register_late_mod_pass(|_| Box::new(QueryStability)); - store.register_lints(&ExistingDocKeyword::get_lints()); + store.register_lints(&ExistingDocKeyword::lint_vec()); store.register_late_mod_pass(|_| Box::new(ExistingDocKeyword)); - store.register_lints(&TyTyKind::get_lints()); + store.register_lints(&TyTyKind::lint_vec()); store.register_late_mod_pass(|_| Box::new(TyTyKind)); - store.register_lints(&TypeIr::get_lints()); + store.register_lints(&TypeIr::lint_vec()); store.register_late_mod_pass(|_| Box::new(TypeIr)); - store.register_lints(&Diagnostics::get_lints()); + store.register_lints(&Diagnostics::lint_vec()); store.register_late_mod_pass(|_| Box::new(Diagnostics)); - store.register_lints(&BadOptAccess::get_lints()); + store.register_lints(&BadOptAccess::lint_vec()); store.register_late_mod_pass(|_| Box::new(BadOptAccess)); - store.register_lints(&PassByValue::get_lints()); + store.register_lints(&PassByValue::lint_vec()); store.register_late_mod_pass(|_| Box::new(PassByValue)); - store.register_lints(&SpanUseEqCtxt::get_lints()); + store.register_lints(&SpanUseEqCtxt::lint_vec()); store.register_late_mod_pass(|_| Box::new(SpanUseEqCtxt)); // FIXME(davidtwco): deliberately do not include `UNTRANSLATABLE_DIAGNOSTIC` and // `DIAGNOSTIC_OUTSIDE_OF_IMPL` here because `-Wrustc::internal` is provided to every crate and diff --git a/compiler/rustc_lint/src/passes.rs b/compiler/rustc_lint/src/passes.rs index 75ae994a86b..9d84d36e779 100644 --- a/compiler/rustc_lint/src/passes.rs +++ b/compiler/rustc_lint/src/passes.rs @@ -110,7 +110,7 @@ macro_rules! declare_combined_late_lint_pass { $v fn get_lints() -> $crate::LintVec { let mut lints = Vec::new(); - $(lints.extend_from_slice(&$pass::get_lints());)* + $(lints.extend_from_slice(&$pass::lint_vec());)* lints } } @@ -124,6 +124,9 @@ macro_rules! declare_combined_late_lint_pass { fn name(&self) -> &'static str { panic!() } + fn get_lints(&self) -> LintVec { + panic!() + } } ) } @@ -222,7 +225,7 @@ macro_rules! declare_combined_early_lint_pass { $v fn get_lints() -> $crate::LintVec { let mut lints = Vec::new(); - $(lints.extend_from_slice(&$pass::get_lints());)* + $(lints.extend_from_slice(&$pass::lint_vec());)* lints } } @@ -236,6 +239,9 @@ macro_rules! declare_combined_early_lint_pass { fn name(&self) -> &'static str { panic!() } + fn get_lints(&self) -> LintVec { + panic!() + } } ) } diff --git a/compiler/rustc_lint/src/types.rs b/compiler/rustc_lint/src/types.rs index 60ff925b40e..0751d35cb9c 100644 --- a/compiler/rustc_lint/src/types.rs +++ b/compiler/rustc_lint/src/types.rs @@ -167,7 +167,7 @@ declare_lint! { "detects ambiguous wide pointer comparisons" } -#[derive(Copy, Clone)] +#[derive(Copy, Clone, Default)] pub(crate) struct TypeLimits { /// Id of the last visited negated expression negated_expr_id: Option<hir::HirId>, diff --git a/compiler/rustc_lint/src/unused.rs b/compiler/rustc_lint/src/unused.rs index ddc18c755a8..bbb290c9459 100644 --- a/compiler/rustc_lint/src/unused.rs +++ b/compiler/rustc_lint/src/unused.rs @@ -1025,8 +1025,8 @@ pub(crate) struct UnusedParens { parens_in_cast_in_lt: Vec<ast::NodeId>, } -impl UnusedParens { - pub(crate) fn new() -> Self { +impl Default for UnusedParens { + fn default() -> Self { Self { with_self_ty_parens: false, parens_in_cast_in_lt: Vec::new() } } } diff --git a/compiler/rustc_lint_defs/src/builtin.rs b/compiler/rustc_lint_defs/src/builtin.rs index a4c49a15905..06a3e4a6743 100644 --- a/compiler/rustc_lint_defs/src/builtin.rs +++ b/compiler/rustc_lint_defs/src/builtin.rs @@ -377,7 +377,8 @@ declare_lint! { /// will not overflow. pub ARITHMETIC_OVERFLOW, Deny, - "arithmetic operation overflows" + "arithmetic operation overflows", + @eval_always = true } declare_lint! { @@ -401,7 +402,8 @@ declare_lint! { /// `panic!` or `unreachable!` macro instead in case the panic is intended. pub UNCONDITIONAL_PANIC, Deny, - "operation will cause a panic at runtime" + "operation will cause a panic at runtime", + @eval_always = true } declare_lint! { @@ -632,7 +634,8 @@ declare_lint! { /// is only available in a newer version. pub UNKNOWN_LINTS, Warn, - "unrecognized lint attribute" + "unrecognized lint attribute", + @eval_always = true } declare_lint! { diff --git a/compiler/rustc_lint_defs/src/lib.rs b/compiler/rustc_lint_defs/src/lib.rs index c01fa5c54d6..601784f9732 100644 --- a/compiler/rustc_lint_defs/src/lib.rs +++ b/compiler/rustc_lint_defs/src/lib.rs @@ -312,6 +312,10 @@ pub struct Lint { pub feature_gate: Option<Symbol>, pub crate_level_only: bool, + + /// `true` if this lint should not be filtered out under any circustamces + /// (e.g. the unknown_attributes lint) + pub eval_always: bool, } /// Extra information for a future incompatibility lint. @@ -456,6 +460,7 @@ impl Lint { future_incompatible: None, feature_gate: None, crate_level_only: false, + eval_always: false, } } @@ -864,6 +869,7 @@ macro_rules! declare_lint { ); ); ($(#[$attr:meta])* $vis: vis $NAME: ident, $Level: ident, $desc: expr, + $(@eval_always = $eval_always:literal)? $(@feature_gate = $gate:ident;)? $(@future_incompatible = FutureIncompatibleInfo { reason: $reason:expr, @@ -885,6 +891,7 @@ macro_rules! declare_lint { ..$crate::FutureIncompatibleInfo::default_fields_for_macro() }),)? $(edition_lint_opts: Some(($crate::Edition::$lint_edition, $crate::$edition_level)),)? + $(eval_always: $eval_always,)? ..$crate::Lint::default_fields_for_macro() }; ); @@ -894,20 +901,23 @@ macro_rules! declare_lint { macro_rules! declare_tool_lint { ( $(#[$attr:meta])* $vis:vis $tool:ident ::$NAME:ident, $Level: ident, $desc: expr + $(, @eval_always = $eval_always:literal)? $(, @feature_gate = $gate:ident;)? ) => ( - $crate::declare_tool_lint!{$(#[$attr])* $vis $tool::$NAME, $Level, $desc, false $(, @feature_gate = $gate;)?} + $crate::declare_tool_lint!{$(#[$attr])* $vis $tool::$NAME, $Level, $desc, false $(, @eval_always = $eval_always)? $(, @feature_gate = $gate;)?} ); ( $(#[$attr:meta])* $vis:vis $tool:ident ::$NAME:ident, $Level:ident, $desc:expr, report_in_external_macro: $rep:expr + $(, @eval_always = $eval_always: literal)? $(, @feature_gate = $gate:ident;)? ) => ( - $crate::declare_tool_lint!{$(#[$attr])* $vis $tool::$NAME, $Level, $desc, $rep $(, @feature_gate = $gate;)?} + $crate::declare_tool_lint!{$(#[$attr])* $vis $tool::$NAME, $Level, $desc, $rep $(, @eval_always = $eval_always)? $(, @feature_gate = $gate;)?} ); ( $(#[$attr:meta])* $vis:vis $tool:ident ::$NAME:ident, $Level:ident, $desc:expr, $external:expr + $(, @eval_always = $eval_always: literal)? $(, @feature_gate = $gate:ident;)? ) => ( $(#[$attr])* @@ -921,6 +931,7 @@ macro_rules! declare_tool_lint { is_externally_loaded: true, $(feature_gate: Some(rustc_span::symbol::sym::$gate),)? crate_level_only: false, + $(eval_always: $eval_always,)? ..$crate::Lint::default_fields_for_macro() }; ); @@ -930,6 +941,7 @@ pub type LintVec = Vec<&'static Lint>; pub trait LintPass { fn name(&self) -> &'static str; + fn get_lints(&self) -> LintVec; } /// Implements `LintPass for $ty` with the given list of `Lint` statics. @@ -938,9 +950,11 @@ macro_rules! impl_lint_pass { ($ty:ty => [$($lint:expr),* $(,)?]) => { impl $crate::LintPass for $ty { fn name(&self) -> &'static str { stringify!($ty) } + fn get_lints(&self) -> $crate::LintVec { vec![$($lint),*] } } impl $ty { - pub fn get_lints() -> $crate::LintVec { vec![$($lint),*] } + #[allow(unused)] + pub fn lint_vec() -> $crate::LintVec { vec![$($lint),*] } } }; } diff --git a/compiler/rustc_middle/Cargo.toml b/compiler/rustc_middle/Cargo.toml index 8cb602d9ea8..485d1c14df3 100644 --- a/compiler/rustc_middle/Cargo.toml +++ b/compiler/rustc_middle/Cargo.toml @@ -27,6 +27,7 @@ rustc_graphviz = { path = "../rustc_graphviz" } rustc_hir = { path = "../rustc_hir" } rustc_hir_pretty = { path = "../rustc_hir_pretty" } rustc_index = { path = "../rustc_index" } +rustc_lint_defs = { path = "../rustc_lint_defs" } rustc_macros = { path = "../rustc_macros" } rustc_query_system = { path = "../rustc_query_system" } rustc_serialize = { path = "../rustc_serialize" } diff --git a/compiler/rustc_middle/src/query/mod.rs b/compiler/rustc_middle/src/query/mod.rs index 94bdb913528..d7a60a843b7 100644 --- a/compiler/rustc_middle/src/query/mod.rs +++ b/compiler/rustc_middle/src/query/mod.rs @@ -29,6 +29,7 @@ use rustc_hir::def_id::{ use rustc_hir::lang_items::{LangItem, LanguageItems}; use rustc_hir::{Crate, ItemLocalId, ItemLocalMap, TraitCandidate}; use rustc_index::IndexVec; +use rustc_lint_defs::LintId; use rustc_macros::rustc_queries; use rustc_query_system::ich::StableHashingContext; use rustc_query_system::query::{QueryCache, QueryMode, QueryState, try_get_cached}; @@ -422,6 +423,11 @@ rustc_queries! { desc { "computing `#[expect]`ed lints in this crate" } } + query lints_that_dont_need_to_run(_: ()) -> &'tcx FxIndexSet<LintId> { + arena_cache + desc { "Computing all lints that are explicitly enabled or with a default level greater than Allow" } + } + query expn_that_defined(key: DefId) -> rustc_span::ExpnId { desc { |tcx| "getting the expansion that defined `{}`", tcx.def_path_str(key) } separate_provide_extern diff --git a/src/librustdoc/lint.rs b/src/librustdoc/lint.rs index bdfdeeabc5a..2afb9e549d9 100644 --- a/src/librustdoc/lint.rs +++ b/src/librustdoc/lint.rs @@ -31,9 +31,9 @@ where allowed_lints.extend(lint_opts.iter().map(|(lint, _)| lint).cloned()); let lints = || { - lint::builtin::HardwiredLints::get_lints() + lint::builtin::HardwiredLints::lint_vec() .into_iter() - .chain(rustc_lint::SoftLints::get_lints()) + .chain(rustc_lint::SoftLints::lint_vec()) }; let lint_opts = lints() diff --git a/src/tools/clippy/clippy_lints/src/cognitive_complexity.rs b/src/tools/clippy/clippy_lints/src/cognitive_complexity.rs index 495d8ce3fa7..477435236a5 100644 --- a/src/tools/clippy/clippy_lints/src/cognitive_complexity.rs +++ b/src/tools/clippy/clippy_lints/src/cognitive_complexity.rs @@ -31,6 +31,7 @@ declare_clippy_lint! { pub COGNITIVE_COMPLEXITY, nursery, "functions that should be split up into multiple functions" + @eval_always = true } pub struct CognitiveComplexity { diff --git a/src/tools/clippy/clippy_lints/src/ctfe.rs b/src/tools/clippy/clippy_lints/src/ctfe.rs new file mode 100644 index 00000000000..2fe37a64db6 --- /dev/null +++ b/src/tools/clippy/clippy_lints/src/ctfe.rs @@ -0,0 +1,40 @@ +use rustc_hir::def_id::LocalDefId; +use rustc_hir::intravisit::FnKind; +use rustc_hir::{Body, FnDecl}; +use rustc_lint::Level::Deny; +use rustc_lint::{LateContext, LateLintPass, Lint}; +use rustc_session::declare_lint_pass; +use rustc_span::Span; + +/// Ensures that Constant-time Function Evaluation is being done (specifically, MIR lint passes). +/// As Clippy deactivates codegen, this lint ensures that CTFE (used in hard errors) is still ran. +pub static CLIPPY_CTFE: &Lint = &Lint { + name: &"clippy::CLIPPY_CTFE", + default_level: Deny, + desc: "Ensure CTFE is being made", + edition_lint_opts: None, + report_in_external_macro: true, + future_incompatible: None, + is_externally_loaded: true, + crate_level_only: false, + eval_always: true, + ..Lint::default_fields_for_macro() +}; + +// No static CLIPPY_CTFE_INFO because we want this lint to be invisible + +declare_lint_pass! { ClippyCtfe => [CLIPPY_CTFE] } + +impl<'tcx> LateLintPass<'tcx> for ClippyCtfe { + fn check_fn( + &mut self, + cx: &LateContext<'_>, + _: FnKind<'tcx>, + _: &'tcx FnDecl<'tcx>, + _: &'tcx Body<'tcx>, + _: Span, + defid: LocalDefId, + ) { + cx.tcx.ensure().mir_drops_elaborated_and_const_checked(defid); // Lint + } +} diff --git a/src/tools/clippy/clippy_lints/src/declare_clippy_lint.rs b/src/tools/clippy/clippy_lints/src/declare_clippy_lint.rs index b1e39c70baa..a785a9d377c 100644 --- a/src/tools/clippy/clippy_lints/src/declare_clippy_lint.rs +++ b/src/tools/clippy/clippy_lints/src/declare_clippy_lint.rs @@ -9,6 +9,7 @@ macro_rules! declare_clippy_lint { $desc:literal, $version_expr:expr, $version_lit:literal + $(, $eval_always: literal)? ) => { rustc_session::declare_tool_lint! { $(#[doc = $lit])* @@ -17,6 +18,7 @@ macro_rules! declare_clippy_lint { $category, $desc, report_in_external_macro:true + $(, @eval_always = $eval_always)? } pub(crate) static ${concat($lint_name, _INFO)}: &'static crate::LintInfo = &crate::LintInfo { @@ -33,11 +35,12 @@ macro_rules! declare_clippy_lint { pub $lint_name:ident, restriction, $desc:literal + $(@eval_always = $eval_always: literal)? ) => { declare_clippy_lint! {@ $(#[doc = $lit])* pub $lint_name, Allow, crate::LintCategory::Restriction, $desc, - Some($version), $version + Some($version), $version $(, $eval_always)? } }; ( @@ -46,12 +49,12 @@ macro_rules! declare_clippy_lint { pub $lint_name:ident, style, $desc:literal + $(@eval_always = $eval_always: literal)? ) => { declare_clippy_lint! {@ $(#[doc = $lit])* pub $lint_name, Warn, crate::LintCategory::Style, $desc, - Some($version), $version - + Some($version), $version $(, $eval_always)? } }; ( @@ -60,11 +63,12 @@ macro_rules! declare_clippy_lint { pub $lint_name:ident, correctness, $desc:literal + $(@eval_always = $eval_always: literal)? ) => { declare_clippy_lint! {@ $(#[doc = $lit])* pub $lint_name, Deny, crate::LintCategory::Correctness, $desc, - Some($version), $version + Some($version), $version $(, $eval_always)? } }; @@ -74,11 +78,12 @@ macro_rules! declare_clippy_lint { pub $lint_name:ident, perf, $desc:literal + $(@eval_always = $eval_always: literal)? ) => { declare_clippy_lint! {@ $(#[doc = $lit])* pub $lint_name, Warn, crate::LintCategory::Perf, $desc, - Some($version), $version + Some($version), $version $(, $eval_always)? } }; ( @@ -87,11 +92,12 @@ macro_rules! declare_clippy_lint { pub $lint_name:ident, complexity, $desc:literal + $(@eval_always = $eval_always: literal)? ) => { declare_clippy_lint! {@ $(#[doc = $lit])* pub $lint_name, Warn, crate::LintCategory::Complexity, $desc, - Some($version), $version + Some($version), $version $(, $eval_always)? } }; ( @@ -100,11 +106,12 @@ macro_rules! declare_clippy_lint { pub $lint_name:ident, suspicious, $desc:literal + $(@eval_always = $eval_always: literal)? ) => { declare_clippy_lint! {@ $(#[doc = $lit])* pub $lint_name, Warn, crate::LintCategory::Suspicious, $desc, - Some($version), $version + Some($version), $version $(, $eval_always)? } }; ( @@ -113,11 +120,12 @@ macro_rules! declare_clippy_lint { pub $lint_name:ident, nursery, $desc:literal + $(@eval_always = $eval_always: literal)? ) => { declare_clippy_lint! {@ $(#[doc = $lit])* pub $lint_name, Allow, crate::LintCategory::Nursery, $desc, - Some($version), $version + Some($version), $version $(, $eval_always)? } }; ( @@ -126,11 +134,12 @@ macro_rules! declare_clippy_lint { pub $lint_name:ident, pedantic, $desc:literal + $(@eval_always = $eval_always: literal)? ) => { declare_clippy_lint! {@ $(#[doc = $lit])* pub $lint_name, Allow, crate::LintCategory::Pedantic, $desc, - Some($version), $version + Some($version), $version $(, $eval_always)? } }; ( @@ -139,11 +148,12 @@ macro_rules! declare_clippy_lint { pub $lint_name:ident, cargo, $desc:literal + $(@eval_always = $eval_always: literal)? ) => { declare_clippy_lint! {@ $(#[doc = $lit])* pub $lint_name, Allow, crate::LintCategory::Cargo, $desc, - Some($version), $version + Some($version), $version $(, $eval_always)? } }; diff --git a/src/tools/clippy/clippy_lints/src/lib.rs b/src/tools/clippy/clippy_lints/src/lib.rs index 6e29dde2211..14110539709 100644 --- a/src/tools/clippy/clippy_lints/src/lib.rs +++ b/src/tools/clippy/clippy_lints/src/lib.rs @@ -65,6 +65,7 @@ extern crate clippy_utils; #[cfg_attr(feature = "internal", allow(clippy::missing_clippy_version_attribute))] mod utils; +pub mod ctfe; // Very important lint, do not remove (rust#125116) pub mod declared_lints; pub mod deprecated_lints; @@ -605,6 +606,8 @@ pub fn register_lints(store: &mut rustc_lint::LintStore, conf: &'static Conf) { }); } + store.register_late_pass(|_| Box::new(ctfe::ClippyCtfe)); + store.register_late_pass(move |_| Box::new(operators::arithmetic_side_effects::ArithmeticSideEffects::new(conf))); store.register_late_pass(|_| Box::new(utils::dump_hir::DumpHir)); store.register_late_pass(|_| Box::new(utils::author::Author)); diff --git a/src/tools/clippy/tests/ui/author.rs b/src/tools/clippy/tests/ui-internal/author.rs index 0a1be356896..eb1f3e3f870 100644 --- a/src/tools/clippy/tests/ui/author.rs +++ b/src/tools/clippy/tests/ui-internal/author.rs @@ -1,3 +1,5 @@ +#![warn(clippy::author)] + fn main() { #[clippy::author] let x: char = 0x45 as char; diff --git a/src/tools/clippy/tests/ui/author.stdout b/src/tools/clippy/tests/ui-internal/author.stdout index eed704e82fe..eed704e82fe 100644 --- a/src/tools/clippy/tests/ui/author.stdout +++ b/src/tools/clippy/tests/ui-internal/author.stdout diff --git a/src/tools/clippy/tests/ui/author/blocks.rs b/src/tools/clippy/tests/ui-internal/author/blocks.rs index 164f7d0d9d6..164f7d0d9d6 100644 --- a/src/tools/clippy/tests/ui/author/blocks.rs +++ b/src/tools/clippy/tests/ui-internal/author/blocks.rs diff --git a/src/tools/clippy/tests/ui/author/blocks.stdout b/src/tools/clippy/tests/ui-internal/author/blocks.stdout index 6bf48d5ba4e..6bf48d5ba4e 100644 --- a/src/tools/clippy/tests/ui/author/blocks.stdout +++ b/src/tools/clippy/tests/ui-internal/author/blocks.stdout diff --git a/src/tools/clippy/tests/ui/author/call.rs b/src/tools/clippy/tests/ui-internal/author/call.rs index e99c3c41dc4..e99c3c41dc4 100644 --- a/src/tools/clippy/tests/ui/author/call.rs +++ b/src/tools/clippy/tests/ui-internal/author/call.rs diff --git a/src/tools/clippy/tests/ui/author/call.stdout b/src/tools/clippy/tests/ui-internal/author/call.stdout index 59d4da490fe..59d4da490fe 100644 --- a/src/tools/clippy/tests/ui/author/call.stdout +++ b/src/tools/clippy/tests/ui-internal/author/call.stdout diff --git a/src/tools/clippy/tests/ui/author/if.rs b/src/tools/clippy/tests/ui-internal/author/if.rs index 946088ab346..946088ab346 100644 --- a/src/tools/clippy/tests/ui/author/if.rs +++ b/src/tools/clippy/tests/ui-internal/author/if.rs diff --git a/src/tools/clippy/tests/ui/author/if.stdout b/src/tools/clippy/tests/ui-internal/author/if.stdout index a85dcddd331..a85dcddd331 100644 --- a/src/tools/clippy/tests/ui/author/if.stdout +++ b/src/tools/clippy/tests/ui-internal/author/if.stdout diff --git a/src/tools/clippy/tests/ui/author/issue_3849.rs b/src/tools/clippy/tests/ui-internal/author/issue_3849.rs index 5f65746d71f..5f65746d71f 100644 --- a/src/tools/clippy/tests/ui/author/issue_3849.rs +++ b/src/tools/clippy/tests/ui-internal/author/issue_3849.rs diff --git a/src/tools/clippy/tests/ui/author/issue_3849.stdout b/src/tools/clippy/tests/ui-internal/author/issue_3849.stdout index a5a8c0304ee..a5a8c0304ee 100644 --- a/src/tools/clippy/tests/ui/author/issue_3849.stdout +++ b/src/tools/clippy/tests/ui-internal/author/issue_3849.stdout diff --git a/src/tools/clippy/tests/ui/author/loop.rs b/src/tools/clippy/tests/ui-internal/author/loop.rs index ff5b6100117..ff5b6100117 100644 --- a/src/tools/clippy/tests/ui/author/loop.rs +++ b/src/tools/clippy/tests/ui-internal/author/loop.rs diff --git a/src/tools/clippy/tests/ui/author/loop.stdout b/src/tools/clippy/tests/ui-internal/author/loop.stdout index 609d2491061..609d2491061 100644 --- a/src/tools/clippy/tests/ui/author/loop.stdout +++ b/src/tools/clippy/tests/ui-internal/author/loop.stdout diff --git a/src/tools/clippy/tests/ui/author/macro_in_closure.rs b/src/tools/clippy/tests/ui-internal/author/macro_in_closure.rs index 444e6a12165..444e6a12165 100644 --- a/src/tools/clippy/tests/ui/author/macro_in_closure.rs +++ b/src/tools/clippy/tests/ui-internal/author/macro_in_closure.rs diff --git a/src/tools/clippy/tests/ui/author/macro_in_closure.stdout b/src/tools/clippy/tests/ui-internal/author/macro_in_closure.stdout index 66caf382d89..66caf382d89 100644 --- a/src/tools/clippy/tests/ui/author/macro_in_closure.stdout +++ b/src/tools/clippy/tests/ui-internal/author/macro_in_closure.stdout diff --git a/src/tools/clippy/tests/ui/author/macro_in_loop.rs b/src/tools/clippy/tests/ui-internal/author/macro_in_loop.rs index 8a520501f8d..8a520501f8d 100644 --- a/src/tools/clippy/tests/ui/author/macro_in_loop.rs +++ b/src/tools/clippy/tests/ui-internal/author/macro_in_loop.rs diff --git a/src/tools/clippy/tests/ui/author/macro_in_loop.stdout b/src/tools/clippy/tests/ui-internal/author/macro_in_loop.stdout index 3f9be297c33..3f9be297c33 100644 --- a/src/tools/clippy/tests/ui/author/macro_in_loop.stdout +++ b/src/tools/clippy/tests/ui-internal/author/macro_in_loop.stdout diff --git a/src/tools/clippy/tests/ui/author/matches.rs b/src/tools/clippy/tests/ui-internal/author/matches.rs index 674e07ec2d3..674e07ec2d3 100644 --- a/src/tools/clippy/tests/ui/author/matches.rs +++ b/src/tools/clippy/tests/ui-internal/author/matches.rs diff --git a/src/tools/clippy/tests/ui/author/matches.stdout b/src/tools/clippy/tests/ui-internal/author/matches.stdout index 91b3b6f6877..91b3b6f6877 100644 --- a/src/tools/clippy/tests/ui/author/matches.stdout +++ b/src/tools/clippy/tests/ui-internal/author/matches.stdout diff --git a/src/tools/clippy/tests/ui/author/repeat.rs b/src/tools/clippy/tests/ui-internal/author/repeat.rs index d8e9d589e68..d8e9d589e68 100644 --- a/src/tools/clippy/tests/ui/author/repeat.rs +++ b/src/tools/clippy/tests/ui-internal/author/repeat.rs diff --git a/src/tools/clippy/tests/ui/author/repeat.stdout b/src/tools/clippy/tests/ui-internal/author/repeat.stdout index d9e3f864f12..d9e3f864f12 100644 --- a/src/tools/clippy/tests/ui/author/repeat.stdout +++ b/src/tools/clippy/tests/ui-internal/author/repeat.stdout diff --git a/src/tools/clippy/tests/ui/author/struct.rs b/src/tools/clippy/tests/ui-internal/author/struct.rs index a99bdfc1313..a99bdfc1313 100644 --- a/src/tools/clippy/tests/ui/author/struct.rs +++ b/src/tools/clippy/tests/ui-internal/author/struct.rs diff --git a/src/tools/clippy/tests/ui/author/struct.stdout b/src/tools/clippy/tests/ui-internal/author/struct.stdout index 0b332d5e7d0..0b332d5e7d0 100644 --- a/src/tools/clippy/tests/ui/author/struct.stdout +++ b/src/tools/clippy/tests/ui-internal/author/struct.stdout diff --git a/src/tools/clippy/tests/ui/no_lints.rs b/src/tools/clippy/tests/ui/no_lints.rs new file mode 100644 index 00000000000..a8467bb6ef7 --- /dev/null +++ b/src/tools/clippy/tests/ui/no_lints.rs @@ -0,0 +1,3 @@ +#![deny(clippy::all)] + +fn main() {} \ No newline at end of file diff --git a/tests/ui-fulldeps/internal-lints/lint_pass_impl_without_macro.rs b/tests/ui-fulldeps/internal-lints/lint_pass_impl_without_macro.rs index c3df917ed12..6eb698c96f6 100644 --- a/tests/ui-fulldeps/internal-lints/lint_pass_impl_without_macro.rs +++ b/tests/ui-fulldeps/internal-lints/lint_pass_impl_without_macro.rs @@ -6,7 +6,7 @@ extern crate rustc_middle; extern crate rustc_session; -use rustc_session::lint::{LintPass, LintVec}; +use rustc_session::lint::{LintPass, LintVec, Lint}; use rustc_session::{declare_lint, declare_lint_pass, impl_lint_pass}; declare_lint! { @@ -21,6 +21,10 @@ impl LintPass for Foo { //~ERROR implementing `LintPass` by hand fn name(&self) -> &'static str { "Foo" } + + fn get_lints(&self) -> Vec<&'static Lint> { + vec![TEST_LINT] + } } macro_rules! custom_lint_pass_macro { @@ -31,6 +35,10 @@ macro_rules! custom_lint_pass_macro { fn name(&self) -> &'static str { "Custom" } + + fn get_lints(&self) -> Vec<&'static Lint> { + vec![TEST_LINT] + } } }; } diff --git a/tests/ui-fulldeps/internal-lints/lint_pass_impl_without_macro.stderr b/tests/ui-fulldeps/internal-lints/lint_pass_impl_without_macro.stderr index ad6e93334cd..824eb35424d 100644 --- a/tests/ui-fulldeps/internal-lints/lint_pass_impl_without_macro.stderr +++ b/tests/ui-fulldeps/internal-lints/lint_pass_impl_without_macro.stderr @@ -12,7 +12,7 @@ LL | #![deny(rustc::lint_pass_impl_without_macro)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: implementing `LintPass` by hand - --> $DIR/lint_pass_impl_without_macro.rs:30:14 + --> $DIR/lint_pass_impl_without_macro.rs:34:14 | LL | impl LintPass for Custom { | ^^^^^^^^ |