diff options
Diffstat (limited to 'compiler/rustc_feature')
| -rw-r--r-- | compiler/rustc_feature/Cargo.toml | 4 | ||||
| -rw-r--r-- | compiler/rustc_feature/src/accepted.rs | 23 | ||||
| -rw-r--r-- | compiler/rustc_feature/src/builtin_attrs.rs | 23 | ||||
| -rw-r--r-- | compiler/rustc_feature/src/lib.rs | 63 | ||||
| -rw-r--r-- | compiler/rustc_feature/src/removed.rs | 59 | ||||
| -rw-r--r-- | compiler/rustc_feature/src/unstable.rs (renamed from compiler/rustc_feature/src/active.rs) | 438 |
6 files changed, 287 insertions, 323 deletions
diff --git a/compiler/rustc_feature/Cargo.toml b/compiler/rustc_feature/Cargo.toml index 6f6468646..9df320e12 100644 --- a/compiler/rustc_feature/Cargo.toml +++ b/compiler/rustc_feature/Cargo.toml @@ -3,8 +3,8 @@ name = "rustc_feature" version = "0.0.0" edition = "2021" -[lib] - [dependencies] +# tidy-alphabetical-start rustc_data_structures = { path = "../rustc_data_structures" } rustc_span = { path = "../rustc_span" } +# tidy-alphabetical-end diff --git a/compiler/rustc_feature/src/accepted.rs b/compiler/rustc_feature/src/accepted.rs index bcc64d48d..577657ff7 100644 --- a/compiler/rustc_feature/src/accepted.rs +++ b/compiler/rustc_feature/src/accepted.rs @@ -1,23 +1,20 @@ //! List of the accepted feature gates. -use super::{to_nonzero, Feature, State}; +use super::{to_nonzero, Feature}; use rustc_span::symbol::sym; macro_rules! declare_features { ($( $(#[doc = $doc:tt])* (accepted, $feature:ident, $ver:expr, $issue:expr, None), )+) => { - /// Those language feature has since been Accepted (it was once Active) + /// Formerly unstable features that have now been accepted (stabilized). pub const ACCEPTED_FEATURES: &[Feature] = &[ - $( - Feature { - state: State::Accepted, - name: sym::$feature, - since: $ver, - issue: to_nonzero($issue), - edition: None, - } - ),+ + $(Feature { + name: sym::$feature, + since: $ver, + issue: to_nonzero($issue), + edition: None, + }),+ ]; } } @@ -67,6 +64,8 @@ declare_features! ( (accepted, associated_types, "1.0.0", None, None), /// Allows free and inherent `async fn`s, `async` blocks, and `<expr>.await` expressions. (accepted, async_await, "1.39.0", Some(50547), None), + /// Allows async functions to be declared, implemented, and used in traits. + (accepted, async_fn_in_trait, "1.75.0", Some(91611), None), /// Allows all literals in attribute lists and values of key-value pairs. (accepted, attr_literals, "1.30.0", Some(34981), None), /// Allows overloading augmented assignment operations like `a += b`. @@ -306,6 +305,8 @@ declare_features! ( (accepted, repr_packed, "1.33.0", Some(33158), None), /// Allows `#[repr(transparent)]` attribute on newtype structs. (accepted, repr_transparent, "1.28.0", Some(43036), None), + /// Allows return-position `impl Trait` in traits. + (accepted, return_position_impl_trait_in_trait, "1.75.0", Some(91611), None), /// Allows code like `let x: &'static u32 = &42` to work (RFC 1414). (accepted, rvalue_static_promotion, "1.21.0", Some(38865), None), /// Allows `Self` in type definitions (RFC 2300). diff --git a/compiler/rustc_feature/src/builtin_attrs.rs b/compiler/rustc_feature/src/builtin_attrs.rs index 18397af56..214de3ca4 100644 --- a/compiler/rustc_feature/src/builtin_attrs.rs +++ b/compiler/rustc_feature/src/builtin_attrs.rs @@ -417,24 +417,6 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[ naked_functions, experimental!(naked) ), - // Plugins: - BuiltinAttribute { - name: sym::plugin, - only_local: false, - type_: CrateLevel, - template: template!(List: "name"), - duplicates: DuplicatesOk, - gate: Gated( - Stability::Deprecated( - "https://github.com/rust-lang/rust/pull/64675", - Some("may be removed in a future compiler version"), - ), - sym::plugin, - "compiler plugins are deprecated", - cfg_fn!(plugin) - ), - }, - // Testing: gated!( test_runner, CrateLevel, template!(List: "path"), ErrorFollowing, custom_test_frameworks, @@ -666,6 +648,10 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[ rustc_attr!( rustc_do_not_const_check, Normal, template!(Word), WarnFollowing, INTERNAL_UNSTABLE ), + // Ensure the argument to this function is &&str during const-check. + rustc_attr!( + rustc_const_panic_str, Normal, template!(Word), WarnFollowing, INTERNAL_UNSTABLE + ), // ========================================================================== // Internal attributes, Layout related: @@ -821,6 +807,7 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[ rustc_attr!(TEST, rustc_strict_coherence, Normal, template!(Word), WarnFollowing), rustc_attr!(TEST, rustc_variance, Normal, template!(Word), WarnFollowing), rustc_attr!(TEST, rustc_variance_of_opaques, Normal, template!(Word), WarnFollowing), + rustc_attr!(TEST, rustc_hidden_type_of_opaques, Normal, template!(Word), WarnFollowing), rustc_attr!(TEST, rustc_layout, Normal, template!(List: "field1, field2, ..."), WarnFollowing), rustc_attr!(TEST, rustc_abi, Normal, template!(List: "field1, field2, ..."), WarnFollowing), rustc_attr!(TEST, rustc_regions, Normal, template!(Word), WarnFollowing), diff --git a/compiler/rustc_feature/src/lib.rs b/compiler/rustc_feature/src/lib.rs index 69e331159..070234df9 100644 --- a/compiler/rustc_feature/src/lib.rs +++ b/compiler/rustc_feature/src/lib.rs @@ -11,44 +11,26 @@ //! even if it is stabilized or removed, *do not remove it*. Instead, move the //! symbol to the `accepted` or `removed` modules respectively. +#![cfg_attr(not(bootstrap), allow(internal_features))] +#![cfg_attr(not(bootstrap), feature(rustdoc_internals))] +#![cfg_attr(not(bootstrap), doc(rust_logo))] #![feature(lazy_cell)] #![deny(rustc::untranslatable_diagnostic)] #![deny(rustc::diagnostic_outside_of_impl)] mod accepted; -mod active; mod builtin_attrs; mod removed; +mod unstable; #[cfg(test)] mod tests; -use rustc_span::{edition::Edition, symbol::Symbol, Span}; -use std::fmt; +use rustc_span::{edition::Edition, symbol::Symbol}; use std::num::NonZeroU32; -#[derive(Clone, Copy)] -pub enum State { - Accepted, - Active { set: fn(&mut Features, Span) }, - Removed { reason: Option<&'static str> }, - Stabilized { reason: Option<&'static str> }, -} - -impl fmt::Debug for State { - fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { - match self { - State::Accepted { .. } => write!(f, "accepted"), - State::Active { .. } => write!(f, "active"), - State::Removed { .. } => write!(f, "removed"), - State::Stabilized { .. } => write!(f, "stabilized"), - } - } -} - #[derive(Debug, Clone)] pub struct Feature { - pub state: State, pub name: Symbol, pub since: &'static str, issue: Option<NonZeroU32>, @@ -65,9 +47,9 @@ pub enum Stability { #[derive(Clone, Copy, Debug, Hash)] pub enum UnstableFeatures { - /// Hard errors for unstable features are active, as on beta/stable channels. + /// Disallow use of unstable features, as on beta/stable channels. Disallow, - /// Allow features to be activated, as on nightly. + /// Allow use of unstable features, as on nightly. Allow, /// Errors are bypassed for bootstrapping. This is required any time /// during the build that feature-related lints are set to warn or above @@ -79,8 +61,8 @@ pub enum UnstableFeatures { impl UnstableFeatures { /// This takes into account `RUSTC_BOOTSTRAP`. /// - /// If `krate` is [`Some`], then setting `RUSTC_BOOTSTRAP=krate` will enable the nightly features. - /// Otherwise, only `RUSTC_BOOTSTRAP=1` will work. + /// If `krate` is [`Some`], then setting `RUSTC_BOOTSTRAP=krate` will enable the nightly + /// features. Otherwise, only `RUSTC_BOOTSTRAP=1` will work. pub fn from_environment(krate: Option<&str>) -> Self { // `true` if this is a feature-staged build, i.e., on the beta or stable channel. let disable_unstable_features = @@ -107,20 +89,17 @@ impl UnstableFeatures { } fn find_lang_feature_issue(feature: Symbol) -> Option<NonZeroU32> { - if let Some(info) = ACTIVE_FEATURES.iter().find(|t| t.name == feature) { - info.issue - } else { - // search in Accepted, Removed, or Stable Removed features - let found = ACCEPTED_FEATURES - .iter() - .chain(REMOVED_FEATURES) - .chain(STABLE_REMOVED_FEATURES) - .find(|t| t.name == feature); - match found { - Some(found) => found.issue, - None => panic!("feature `{feature}` is not declared anywhere"), - } + // Search in all the feature lists. + if let Some(f) = UNSTABLE_FEATURES.iter().find(|f| f.feature.name == feature) { + return f.feature.issue; + } + if let Some(f) = ACCEPTED_FEATURES.iter().find(|f| f.name == feature) { + return f.issue; + } + if let Some(f) = REMOVED_FEATURES.iter().find(|f| f.feature.name == feature) { + return f.feature.issue; } + panic!("feature `{feature}` is not declared anywhere"); } const fn to_nonzero(n: Option<u32>) -> Option<NonZeroU32> { @@ -145,11 +124,11 @@ pub fn find_feature_issue(feature: Symbol, issue: GateIssue) -> Option<NonZeroU3 } pub use accepted::ACCEPTED_FEATURES; -pub use active::{Features, ACTIVE_FEATURES, INCOMPATIBLE_FEATURES}; pub use builtin_attrs::AttributeDuplicates; pub use builtin_attrs::{ deprecated_attributes, find_gated_cfg, is_builtin_attr_name, is_builtin_only_local, is_valid_for_get_attr, AttributeGate, AttributeTemplate, AttributeType, BuiltinAttribute, GatedCfg, BUILTIN_ATTRIBUTES, BUILTIN_ATTRIBUTE_MAP, }; -pub use removed::{REMOVED_FEATURES, STABLE_REMOVED_FEATURES}; +pub use removed::REMOVED_FEATURES; +pub use unstable::{Features, INCOMPATIBLE_FEATURES, UNSTABLE_FEATURES}; diff --git a/compiler/rustc_feature/src/removed.rs b/compiler/rustc_feature/src/removed.rs index 699d8a34e..4385e745b 100644 --- a/compiler/rustc_feature/src/removed.rs +++ b/compiler/rustc_feature/src/removed.rs @@ -1,40 +1,28 @@ //! List of the removed feature gates. -use super::{to_nonzero, Feature, State}; +use super::{to_nonzero, Feature}; use rustc_span::symbol::sym; +pub struct RemovedFeature { + pub feature: Feature, + pub reason: Option<&'static str>, +} + macro_rules! declare_features { ($( $(#[doc = $doc:tt])* (removed, $feature:ident, $ver:expr, $issue:expr, None, $reason:expr), )+) => { - /// Represents unstable features which have since been removed (it was once Active) - pub const REMOVED_FEATURES: &[Feature] = &[ - $( - Feature { - state: State::Removed { reason: $reason }, + /// Formerly unstable features that have now been removed. + pub const REMOVED_FEATURES: &[RemovedFeature] = &[ + $(RemovedFeature { + feature: Feature { name: sym::$feature, since: $ver, issue: to_nonzero($issue), edition: None, - } - ),+ - ]; - }; - - ($( - $(#[doc = $doc:tt])* (stable_removed, $feature:ident, $ver:expr, $issue:expr, None), - )+) => { - /// Represents stable features which have since been removed (it was once Accepted) - pub const STABLE_REMOVED_FEATURES: &[Feature] = &[ - $( - Feature { - state: State::Stabilized { reason: None }, - name: sym::$feature, - since: $ver, - issue: to_nonzero($issue), - edition: None, - } - ),+ + }, + reason: $reason + }),+ ]; }; } @@ -54,7 +42,7 @@ declare_features! ( Some("subsumed by `.await` syntax")), /// Allows using the `box $expr` syntax. (removed, box_syntax, "1.70.0", Some(49733), None, Some("replaced with `#[rustc_box]`")), - /// Allows capturing disjoint fields in a closure/generator (RFC 2229). + /// Allows capturing disjoint fields in a closure/coroutine (RFC 2229). (removed, capture_disjoint_fields, "1.49.0", Some(53488), None, Some("stabilized in Rust 2021")), /// Allows comparing raw pointers during const eval. (removed, const_compare_raw_pointers, "1.46.0", Some(53020), None, @@ -108,6 +96,10 @@ declare_features! ( /// Allows `#[doc(include = "some-file")]`. (removed, external_doc, "1.54.0", Some(44732), None, Some("use #[doc = include_str!(\"filename\")] instead, which handles macro invocations")), + /// Allows generators to be cloned. + (removed, generator_clone, "1.65.0", Some(95360), None, Some("renamed to `coroutine_clone`")), + /// Allows defining generators. + (removed, generators, "1.21.0", Some(43122), None, Some("renamed to `coroutines`")), /// Allows `impl Trait` in bindings (`let`, `const`, `static`). (removed, impl_trait_in_bindings, "1.55.0", Some(63065), None, Some("the implementation was not maintainable, the feature may get reintroduced once the current refactorings are done")), @@ -141,6 +133,11 @@ declare_features! ( (removed, no_coverage, "1.74.0", Some(84605), None, Some("renamed to `coverage_attribute`")), /// Allows `#[no_debug]`. (removed, no_debug, "1.43.0", Some(29721), None, Some("removed due to lack of demand")), + /// Note: this feature was previously recorded in a separate + /// `STABLE_REMOVED` list because it, uniquely, was once stable but was + /// then removed. But there was no utility storing it separately, so now + /// it's in this list. + (removed, no_stack_check, "1.0.0", None, None, None), /// Allows using `#[on_unimplemented(..)]` on traits. /// (Moved to `rustc_attrs`.) (removed, on_unimplemented, "1.40.0", None, None, None), @@ -155,9 +152,12 @@ declare_features! ( Some("removed in favor of `#![feature(marker_trait_attr)]`")), (removed, panic_implementation, "1.28.0", Some(44489), None, Some("subsumed by `#[panic_handler]`")), + /// Allows using `#![plugin(myplugin)]`. + (removed, plugin, "1.75.0", Some(29597), None, + Some("plugins are no longer supported")), /// Allows using `#[plugin_registrar]` on functions. (removed, plugin_registrar, "1.54.0", Some(29597), None, - Some("a __rustc_plugin_registrar symbol must now be defined instead")), + Some("plugins are no longer supported")), (removed, proc_macro_expr, "1.27.0", Some(54727), None, Some("subsumed by `#![feature(proc_macro_hygiene)]`")), (removed, proc_macro_gen, "1.27.0", Some(54727), None, @@ -208,8 +208,3 @@ declare_features! ( // feature-group-end: removed features // ------------------------------------------------------------------------- ); - -#[rustfmt::skip] -declare_features! ( - (stable_removed, no_stack_check, "1.0.0", None, None), -); diff --git a/compiler/rustc_feature/src/active.rs b/compiler/rustc_feature/src/unstable.rs index 783f39fdf..b11b190bd 100644 --- a/compiler/rustc_feature/src/active.rs +++ b/compiler/rustc_feature/src/unstable.rs @@ -1,19 +1,15 @@ -//! List of the active feature gates. +//! List of the unstable feature gates. -use super::{to_nonzero, Feature, State}; +use super::{to_nonzero, Feature}; use rustc_data_structures::fx::FxHashSet; use rustc_span::edition::Edition; use rustc_span::symbol::{sym, Symbol}; use rustc_span::Span; -macro_rules! set { - ($field: ident) => {{ - fn f(features: &mut Features, _: Span) { - features.$field = true; - } - f as fn(&mut Features, Span) - }}; +pub struct UnstableFeature { + pub feature: Feature, + pub set_enabled: fn(&mut Features), } #[derive(PartialEq)] @@ -23,33 +19,36 @@ enum FeatureStatus { Internal, } -macro_rules! declare_features { - (__status_to_enum active) => { +macro_rules! status_to_enum { + (unstable) => { FeatureStatus::Default }; - (__status_to_enum incomplete) => { + (incomplete) => { FeatureStatus::Incomplete }; - (__status_to_enum internal) => { + (internal) => { FeatureStatus::Internal }; +} + +macro_rules! declare_features { ($( $(#[doc = $doc:tt])* ($status:ident, $feature:ident, $ver:expr, $issue:expr, $edition:expr), )+) => { - /// Represents active features that are currently being implemented or - /// currently being considered for addition/removal. - pub const ACTIVE_FEATURES: - &[Feature] = - &[$( - // (sym::$feature, $ver, $issue, $edition, set!($feature)) - Feature { - state: State::Active { set: set!($feature) }, + /// Unstable language features that are being implemented or being + /// considered for acceptance (stabilization) or removal. + pub const UNSTABLE_FEATURES: &[UnstableFeature] = &[ + $(UnstableFeature { + feature: Feature { name: sym::$feature, since: $ver, issue: to_nonzero($issue), edition: $edition, - } - ),+]; + }, + // Sets this feature's corresponding bool within `features`. + set_enabled: |features| features.$feature = true, + }),+ + ]; /// A set of features to be used by later passes. #[derive(Clone, Default, Debug)] @@ -58,8 +57,9 @@ macro_rules! declare_features { pub declared_lang_features: Vec<(Symbol, Span, Option<Symbol>)>, /// `#![feature]` attrs for non-language (library) features. pub declared_lib_features: Vec<(Symbol, Span)>, - /// Features enabled for this crate. - pub active_features: FxHashSet<Symbol>, + /// `declared_lang_features` + `declared_lib_features`. + pub declared_features: FxHashSet<Symbol>, + /// Active state of individual features (unstable only). $( $(#[doc = $doc])* pub $feature: bool @@ -67,19 +67,36 @@ macro_rules! declare_features { } impl Features { + pub fn set_declared_lang_feature( + &mut self, + symbol: Symbol, + span: Span, + since: Option<Symbol> + ) { + self.declared_lang_features.push((symbol, span, since)); + self.declared_features.insert(symbol); + } + + pub fn set_declared_lib_feature(&mut self, symbol: Symbol, span: Span) { + self.declared_lib_features.push((symbol, span)); + self.declared_features.insert(symbol); + } + pub fn walk_feature_fields(&self, mut f: impl FnMut(&str, bool)) { $(f(stringify!($feature), self.$feature);)+ } - /// Is the given feature active? - pub fn active(&self, feature: Symbol) -> bool { - self.active_features.contains(&feature) + /// Is the given feature explicitly declared, i.e. named in a + /// `#![feature(...)]` within the code? + pub fn declared(&self, feature: Symbol) -> bool { + self.declared_features.contains(&feature) } - /// Is the given feature enabled? + /// Is the given feature active, i.e. declared or automatically + /// enabled due to the edition? /// /// Panics if the symbol doesn't correspond to a declared feature. - pub fn enabled(&self, feature: Symbol) -> bool { + pub fn active(&self, feature: Symbol) -> bool { match feature { $( sym::$feature => self.$feature, )* @@ -93,27 +110,24 @@ macro_rules! declare_features { pub fn incomplete(&self, feature: Symbol) -> bool { match feature { $( - sym::$feature => declare_features!(__status_to_enum $status) == FeatureStatus::Incomplete, + sym::$feature => status_to_enum!($status) == FeatureStatus::Incomplete, )* - // accepted and removed features aren't in this file but are never incomplete - _ if self.declared_lang_features.iter().any(|f| f.0 == feature) => false, - _ if self.declared_lib_features.iter().any(|f| f.0 == feature) => false, + // Accepted/removed features aren't in this file but are never incomplete. + _ if self.declared_features.contains(&feature) => false, _ => panic!("`{}` was not listed in `declare_features`", feature), } } /// Some features are internal to the compiler and standard library and should not - /// be used in normal projects. We warn the user about these - /// to alert them. + /// be used in normal projects. We warn the user about these to alert them. pub fn internal(&self, feature: Symbol) -> bool { match feature { $( - sym::$feature => declare_features!(__status_to_enum $status) == FeatureStatus::Internal, + sym::$feature => status_to_enum!($status) == FeatureStatus::Internal, )* - // accepted and removed features aren't in this file but are never internal - // (a removed feature might have been internal, but it doesn't matter anymore) - _ if self.declared_lang_features.iter().any(|f| f.0 == feature) => false, - _ if self.declared_lib_features.iter().any(|f| f.0 == feature) => false, + // Accepted/removed features aren't in this file but are never internal + // (a removed feature might have been internal, but that's now irrelevant). + _ if self.declared_features.contains(&feature) => false, _ => panic!("`{}` was not listed in `declare_features`", feature), } } @@ -121,16 +135,6 @@ macro_rules! declare_features { }; } -impl Feature { - /// Sets this feature in `Features`. Panics if called on a non-active feature. - pub fn set(&self, features: &mut Features, span: Span) { - match self.state { - State::Active { set } => set(features, span), - _ => panic!("called `set` on feature `{}` which is not `active`", self.name), - } - } -} - // See https://rustc-dev-guide.rust-lang.org/feature-gates.html#feature-gates for more // documentation about handling feature gates. // @@ -140,8 +144,7 @@ impl Feature { // accepted or `removed.rs` if removed. // // The version numbers here correspond to the version in which the current status -// was set. This is most important for knowing when a particular feature became -// stable (active). +// was set. // // Note that the features are grouped into internal/user-facing and then // sorted by version inside those groups. This is enforced with tidy. @@ -157,9 +160,9 @@ declare_features! ( // no-tracking-issue-start /// Allows using the `unadjusted` ABI; perma-unstable. - (active, abi_unadjusted, "1.16.0", None, None), + (unstable, abi_unadjusted, "1.16.0", None, None), /// Allows using the `vectorcall` ABI. - (active, abi_vectorcall, "1.7.0", None, None), + (unstable, abi_vectorcall, "1.7.0", None, None), /// Allows using `#![needs_allocator]`, an implementation detail of `#[global_allocator]`. (internal, allocator_internals, "1.20.0", None, None), /// Allows using `#[allow_internal_unsafe]`. This is an @@ -173,21 +176,21 @@ declare_features! ( /// macros disappear). (internal, allow_internal_unstable, "1.0.0", None, None), /// Allows using anonymous lifetimes in argument-position impl-trait. - (active, anonymous_lifetime_in_impl_trait, "1.63.0", None, None), + (unstable, anonymous_lifetime_in_impl_trait, "1.63.0", None, None), /// Allows identifying the `compiler_builtins` crate. (internal, compiler_builtins, "1.13.0", None, None), /// Allows writing custom MIR (internal, custom_mir, "1.65.0", None, None), /// Outputs useful `assert!` messages - (active, generic_assert, "1.63.0", None, None), + (unstable, generic_assert, "1.63.0", None, None), /// Allows using the `rust-intrinsic`'s "ABI". (internal, intrinsics, "1.0.0", None, None), /// Allows using `#[lang = ".."]` attribute for linking items to special compiler logic. (internal, lang_items, "1.0.0", None, None), /// Allows `#[link(..., cfg(..))]`; perma-unstable per #37406 - (active, link_cfg, "1.14.0", None, None), + (unstable, link_cfg, "1.14.0", None, None), /// Allows the `multiple_supertrait_upcastable` lint. - (active, multiple_supertrait_upcastable, "1.69.0", None, None), + (unstable, multiple_supertrait_upcastable, "1.69.0", None, None), /// Allow negative trait bounds. This is an internal-only feature for testing the trait solver! (incomplete, negative_bounds, "1.71.0", None, None), /// Allows using `#[omit_gdb_pretty_printer_section]`. @@ -209,7 +212,7 @@ declare_features! ( (internal, unsafe_pin_internals, "1.60.0", None, None), /// Use for stable + negative coherence and strict coherence depending on trait's /// rustc_strict_coherence value. - (active, with_negative_coherence, "1.60.0", None, None), + (unstable, with_negative_coherence, "1.60.0", None, None), // !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! // Features are listed in alphabetical order. Tidy will fail if you don't keep it this way. // !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! @@ -225,20 +228,20 @@ declare_features! ( /// Allows features specific to auto traits. /// Renamed from `optin_builtin_traits`. - (active, auto_traits, "1.50.0", Some(13231), None), + (unstable, auto_traits, "1.50.0", Some(13231), None), /// Allows using `box` in patterns (RFC 469). - (active, box_patterns, "1.0.0", Some(29641), None), + (unstable, box_patterns, "1.0.0", Some(29641), None), /// Allows `#[doc(notable_trait)]`. /// Renamed from `doc_spotlight`. - (active, doc_notable_trait, "1.52.0", Some(45040), None), + (unstable, doc_notable_trait, "1.52.0", Some(45040), None), /// Allows using the `may_dangle` attribute (RFC 1327). - (active, dropck_eyepatch, "1.10.0", Some(34761), None), + (unstable, dropck_eyepatch, "1.10.0", Some(34761), None), /// Allows using the `#[fundamental]` attribute. - (active, fundamental, "1.0.0", Some(29635), None), + (unstable, fundamental, "1.0.0", Some(29635), None), /// Allows using `#[link_name="llvm.*"]`. (internal, link_llvm_intrinsics, "1.0.0", Some(29602), None), /// Allows using the `#[linkage = ".."]` attribute. - (active, linkage, "1.0.0", Some(29603), None), + (unstable, linkage, "1.0.0", Some(29603), None), /// Allows declaring with `#![needs_panic_runtime]` that a panic runtime is needed. (internal, needs_panic_runtime, "1.10.0", Some(32837), None), /// Allows using the `#![panic_runtime]` attribute. @@ -250,19 +253,19 @@ declare_features! ( /// purpose as `#[allow_internal_unstable]`. (internal, rustc_allow_const_fn_unstable, "1.49.0", Some(69399), None), /// Allows using compiler's own crates. - (active, rustc_private, "1.0.0", Some(27812), None), + (unstable, rustc_private, "1.0.0", Some(27812), None), /// Allows using internal rustdoc features like `doc(keyword)`. (internal, rustdoc_internals, "1.58.0", Some(90418), None), /// Allows using the `rustdoc::missing_doc_code_examples` lint - (active, rustdoc_missing_doc_code_examples, "1.31.0", Some(101730), None), + (unstable, rustdoc_missing_doc_code_examples, "1.31.0", Some(101730), None), /// Allows using `#[start]` on a function indicating that it is the program entrypoint. - (active, start, "1.0.0", Some(29633), None), + (unstable, start, "1.0.0", Some(29633), None), /// Allows using `#[structural_match]` which indicates that a type is structurally matchable. /// FIXME: Subsumed by trait `StructuralPartialEq`, cannot move to removed until a library /// feature with the same name exists. - (active, structural_match, "1.8.0", Some(31434), None), + (unstable, structural_match, "1.8.0", Some(31434), None), /// Allows using the `rust-call` ABI. - (active, unboxed_closures, "1.0.0", Some(29625), None), + (unstable, unboxed_closures, "1.0.0", Some(29625), None), // !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! // Features are listed in alphabetical order. Tidy will fail if you don't keep it this way. // !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! @@ -278,20 +281,21 @@ declare_features! ( // FIXME: Document these and merge with the list below. // Unstable `#[target_feature]` directives. - (active, aarch64_ver_target_feature, "1.27.0", Some(44839), None), - (active, arm_target_feature, "1.27.0", Some(44839), None), - (active, avx512_target_feature, "1.27.0", Some(44839), None), - (active, bpf_target_feature, "1.54.0", Some(44839), None), - (active, csky_target_feature, "1.73.0", Some(44839), None), - (active, ermsb_target_feature, "1.49.0", Some(44839), None), - (active, hexagon_target_feature, "1.27.0", Some(44839), None), - (active, mips_target_feature, "1.27.0", Some(44839), None), - (active, powerpc_target_feature, "1.27.0", Some(44839), None), - (active, riscv_target_feature, "1.45.0", Some(44839), None), - (active, rtm_target_feature, "1.35.0", Some(44839), None), - (active, sse4a_target_feature, "1.27.0", Some(44839), None), - (active, tbm_target_feature, "1.27.0", Some(44839), None), - (active, wasm_target_feature, "1.30.0", Some(44839), None), + (unstable, aarch64_ver_target_feature, "1.27.0", Some(44839), None), + (unstable, arm_target_feature, "1.27.0", Some(44839), None), + (unstable, avx512_target_feature, "1.27.0", Some(44839), None), + (unstable, bpf_target_feature, "1.54.0", Some(44839), None), + (unstable, csky_target_feature, "1.73.0", Some(44839), None), + (unstable, ermsb_target_feature, "1.49.0", Some(44839), None), + (unstable, hexagon_target_feature, "1.27.0", Some(44839), None), + (unstable, loongarch_target_feature, "1.73.0", Some(44839), None), + (unstable, mips_target_feature, "1.27.0", Some(44839), None), + (unstable, powerpc_target_feature, "1.27.0", Some(44839), None), + (unstable, riscv_target_feature, "1.45.0", Some(44839), None), + (unstable, rtm_target_feature, "1.35.0", Some(44839), None), + (unstable, sse4a_target_feature, "1.27.0", Some(44839), None), + (unstable, tbm_target_feature, "1.27.0", Some(44839), None), + (unstable, wasm_target_feature, "1.30.0", Some(44839), None), // !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! // Features are listed in alphabetical order. Tidy will fail if you don't keep it this way. // !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! @@ -305,157 +309,157 @@ declare_features! ( // ------------------------------------------------------------------------- /// Allows using the `amdgpu-kernel` ABI. - (active, abi_amdgpu_kernel, "1.29.0", Some(51575), None), + (unstable, abi_amdgpu_kernel, "1.29.0", Some(51575), None), /// Allows `extern "avr-interrupt" fn()` and `extern "avr-non-blocking-interrupt" fn()`. - (active, abi_avr_interrupt, "1.45.0", Some(69664), None), + (unstable, abi_avr_interrupt, "1.45.0", Some(69664), None), /// Allows `extern "C-cmse-nonsecure-call" fn()`. - (active, abi_c_cmse_nonsecure_call, "1.51.0", Some(81391), None), + (unstable, abi_c_cmse_nonsecure_call, "1.51.0", Some(81391), None), /// Allows `extern "msp430-interrupt" fn()`. - (active, abi_msp430_interrupt, "1.16.0", Some(38487), None), + (unstable, abi_msp430_interrupt, "1.16.0", Some(38487), None), /// Allows `extern "ptx-*" fn()`. - (active, abi_ptx, "1.15.0", Some(38788), None), + (unstable, abi_ptx, "1.15.0", Some(38788), None), /// Allows `extern "riscv-interrupt-m" fn()` and `extern "riscv-interrupt-s" fn()`. - (active, abi_riscv_interrupt, "1.73.0", Some(111889), None), + (unstable, abi_riscv_interrupt, "1.73.0", Some(111889), None), /// Allows `extern "x86-interrupt" fn()`. - (active, abi_x86_interrupt, "1.17.0", Some(40180), None), + (unstable, abi_x86_interrupt, "1.17.0", Some(40180), None), /// Allows additional const parameter types, such as `&'static str` or user defined types (incomplete, adt_const_params, "1.56.0", Some(95174), None), /// Allows defining an `#[alloc_error_handler]`. - (active, alloc_error_handler, "1.29.0", Some(51540), None), + (unstable, alloc_error_handler, "1.29.0", Some(51540), None), /// Allows trait methods with arbitrary self types. - (active, arbitrary_self_types, "1.23.0", Some(44874), None), + (unstable, arbitrary_self_types, "1.23.0", Some(44874), None), /// Allows using `const` operands in inline assembly. - (active, asm_const, "1.58.0", Some(93332), None), + (unstable, asm_const, "1.58.0", Some(93332), None), /// Enables experimental inline assembly support for additional architectures. - (active, asm_experimental_arch, "1.58.0", Some(93335), None), + (unstable, asm_experimental_arch, "1.58.0", Some(93335), None), /// Allows the `may_unwind` option in inline assembly. - (active, asm_unwind, "1.58.0", Some(93334), None), + (unstable, asm_unwind, "1.58.0", Some(93334), None), /// Allows users to enforce equality of associated constants `TraitImpl<AssocConst=3>`. - (active, associated_const_equality, "1.58.0", Some(92827), None), + (unstable, associated_const_equality, "1.58.0", Some(92827), None), /// Allows the user of associated type bounds. - (active, associated_type_bounds, "1.34.0", Some(52662), None), + (unstable, associated_type_bounds, "1.34.0", Some(52662), None), /// Allows associated type defaults. - (active, associated_type_defaults, "1.2.0", Some(29661), None), + (unstable, associated_type_defaults, "1.2.0", Some(29661), None), /// Allows `async || body` closures. - (active, async_closure, "1.37.0", Some(62290), None), - /// Allows async functions to be declared, implemented, and used in traits. - (active, async_fn_in_trait, "1.66.0", Some(91611), None), + (unstable, async_closure, "1.37.0", Some(62290), None), /// Allows `#[track_caller]` on async functions. - (active, async_fn_track_caller, "1.73.0", Some(110011), None), + (unstable, async_fn_track_caller, "1.73.0", Some(110011), None), /// Allows builtin # foo() syntax - (active, builtin_syntax, "1.71.0", Some(110680), None), + (unstable, builtin_syntax, "1.71.0", Some(110680), None), /// Allows `c"foo"` literals. - (active, c_str_literals, "1.71.0", Some(105723), None), + (unstable, c_str_literals, "1.71.0", Some(105723), None), /// Treat `extern "C"` function as nounwind. - (active, c_unwind, "1.52.0", Some(74990), None), + (unstable, c_unwind, "1.52.0", Some(74990), None), /// Allows using C-variadics. - (active, c_variadic, "1.34.0", Some(44930), None), + (unstable, c_variadic, "1.34.0", Some(44930), None), /// Allows the use of `#[cfg(overflow_checks)` to check if integer overflow behaviour. - (active, cfg_overflow_checks, "1.71.0", Some(111466), None), + (unstable, cfg_overflow_checks, "1.71.0", Some(111466), None), /// Provides the relocation model information as cfg entry - (active, cfg_relocation_model, "1.73.0", Some(114929), None), + (unstable, cfg_relocation_model, "1.73.0", Some(114929), None), /// Allows the use of `#[cfg(sanitize = "option")]`; set when -Zsanitizer is used. - (active, cfg_sanitize, "1.41.0", Some(39699), None), + (unstable, cfg_sanitize, "1.41.0", Some(39699), None), /// Allows `cfg(target_abi = "...")`. - (active, cfg_target_abi, "1.55.0", Some(80970), None), + (unstable, cfg_target_abi, "1.55.0", Some(80970), None), /// Allows `cfg(target(abi = "..."))`. - (active, cfg_target_compact, "1.63.0", Some(96901), None), + (unstable, cfg_target_compact, "1.63.0", Some(96901), None), /// Allows `cfg(target_has_atomic_load_store = "...")`. - (active, cfg_target_has_atomic, "1.60.0", Some(94039), None), + (unstable, cfg_target_has_atomic, "1.60.0", Some(94039), None), /// Allows `cfg(target_has_atomic_equal_alignment = "...")`. - (active, cfg_target_has_atomic_equal_alignment, "1.60.0", Some(93822), None), + (unstable, cfg_target_has_atomic_equal_alignment, "1.60.0", Some(93822), None), /// Allows `cfg(target_thread_local)`. - (active, cfg_target_thread_local, "1.7.0", Some(29594), None), + (unstable, cfg_target_thread_local, "1.7.0", Some(29594), None), /// Allow conditional compilation depending on rust version - (active, cfg_version, "1.45.0", Some(64796), None), + (unstable, cfg_version, "1.45.0", Some(64796), None), /// Allows to use the `#[cfi_encoding = ""]` attribute. - (active, cfi_encoding, "1.71.0", Some(89653), None), - /// Allows `for<...>` on closures and generators. - (active, closure_lifetime_binder, "1.64.0", Some(97362), None), - /// Allows `#[track_caller]` on closures and generators. - (active, closure_track_caller, "1.57.0", Some(87417), None), + (unstable, cfi_encoding, "1.71.0", Some(89653), None), + /// Allows `for<...>` on closures and coroutines. + (unstable, closure_lifetime_binder, "1.64.0", Some(97362), None), + /// Allows `#[track_caller]` on closures and coroutines. + (unstable, closure_track_caller, "1.57.0", Some(87417), None), /// Allows to use the `#[cmse_nonsecure_entry]` attribute. - (active, cmse_nonsecure_entry, "1.48.0", Some(75835), None), + (unstable, cmse_nonsecure_entry, "1.48.0", Some(75835), None), /// Allows use of the `#[collapse_debuginfo]` attribute. - (active, collapse_debuginfo, "1.65.0", Some(100758), None), + (unstable, collapse_debuginfo, "1.65.0", Some(100758), None), /// Allows `async {}` expressions in const contexts. - (active, const_async_blocks, "1.53.0", Some(85368), None), + (unstable, const_async_blocks, "1.53.0", Some(85368), None), /// Allows `const || {}` closures in const contexts. (incomplete, const_closures, "1.68.0", Some(106003), None), /// Allows the definition of `const extern fn` and `const unsafe extern fn`. - (active, const_extern_fn, "1.40.0", Some(64926), None), + (unstable, const_extern_fn, "1.40.0", Some(64926), None), /// Allows basic arithmetic on floating point types in a `const fn`. - (active, const_fn_floating_point_arithmetic, "1.48.0", Some(57241), None), + (unstable, const_fn_floating_point_arithmetic, "1.48.0", Some(57241), None), /// Allows `for _ in _` loops in const contexts. - (active, const_for, "1.56.0", Some(87575), None), + (unstable, const_for, "1.56.0", Some(87575), None), /// Allows using `&mut` in constant functions. - (active, const_mut_refs, "1.41.0", Some(57349), None), + (unstable, const_mut_refs, "1.41.0", Some(57349), None), /// Be more precise when looking for live drops in a const context. - (active, const_precise_live_drops, "1.46.0", Some(73255), None), + (unstable, const_precise_live_drops, "1.46.0", Some(73255), None), /// Allows references to types with interior mutability within constants - (active, const_refs_to_cell, "1.51.0", Some(80384), None), + (unstable, const_refs_to_cell, "1.51.0", Some(80384), None), /// Allows `impl const Trait for T` syntax. - (active, const_trait_impl, "1.42.0", Some(67792), None), + (unstable, const_trait_impl, "1.42.0", Some(67792), None), /// Allows the `?` operator in const contexts. - (active, const_try, "1.56.0", Some(74935), None), + (unstable, const_try, "1.56.0", Some(74935), None), + /// Allows coroutines to be cloned. + (unstable, coroutine_clone, "1.65.0", Some(95360), None), + /// Allows defining coroutines. + (unstable, coroutines, "1.21.0", Some(43122), None), /// Allows function attribute `#[coverage(on/off)]`, to control coverage /// instrumentation of that function. - (active, coverage_attribute, "1.74.0", Some(84605), None), + (unstable, coverage_attribute, "1.74.0", Some(84605), None), /// Allows users to provide classes for fenced code block using `class:classname`. - (active, custom_code_classes_in_docs, "1.74.0", Some(79483), None), + (unstable, custom_code_classes_in_docs, "1.74.0", Some(79483), None), /// Allows non-builtin attributes in inner attribute position. - (active, custom_inner_attributes, "1.30.0", Some(54726), None), + (unstable, custom_inner_attributes, "1.30.0", Some(54726), None), /// Allows custom test frameworks with `#![test_runner]` and `#[test_case]`. - (active, custom_test_frameworks, "1.30.0", Some(50297), None), + (unstable, custom_test_frameworks, "1.30.0", Some(50297), None), /// Allows declarative macros 2.0 (`macro`). - (active, decl_macro, "1.17.0", Some(39412), None), + (unstable, decl_macro, "1.17.0", Some(39412), None), /// Allows default type parameters to influence type inference. - (active, default_type_parameter_fallback, "1.3.0", Some(27336), None), + (unstable, default_type_parameter_fallback, "1.3.0", Some(27336), None), /// Allows using `#[deprecated_safe]` to deprecate the safeness of a function or trait - (active, deprecated_safe, "1.61.0", Some(94978), None), + (unstable, deprecated_safe, "1.61.0", Some(94978), None), /// Allows having using `suggestion` in the `#[deprecated]` attribute. - (active, deprecated_suggestion, "1.61.0", Some(94785), None), + (unstable, deprecated_suggestion, "1.61.0", Some(94785), None), /// Allows using the `#[diagnostic]` attribute tool namespace - (active, diagnostic_namespace, "1.73.0", Some(111996), None), + (unstable, diagnostic_namespace, "1.73.0", Some(111996), None), /// Controls errors in trait implementations. - (active, do_not_recommend, "1.67.0", Some(51992), None), + (unstable, do_not_recommend, "1.67.0", Some(51992), None), /// Tells rustdoc to automatically generate `#[doc(cfg(...))]`. - (active, doc_auto_cfg, "1.58.0", Some(43781), None), + (unstable, doc_auto_cfg, "1.58.0", Some(43781), None), /// Allows `#[doc(cfg(...))]`. - (active, doc_cfg, "1.21.0", Some(43781), None), + (unstable, doc_cfg, "1.21.0", Some(43781), None), /// Allows `#[doc(cfg_hide(...))]`. - (active, doc_cfg_hide, "1.57.0", Some(43781), None), + (unstable, doc_cfg_hide, "1.57.0", Some(43781), None), /// Allows `#[doc(masked)]`. - (active, doc_masked, "1.21.0", Some(44027), None), + (unstable, doc_masked, "1.21.0", Some(44027), None), /// Allows `dyn* Trait` objects. (incomplete, dyn_star, "1.65.0", Some(102425), None), // Uses generic effect parameters for ~const bounds - (active, effects, "1.72.0", Some(102090), None), + (unstable, effects, "1.72.0", Some(102090), None), /// Allows `X..Y` patterns. - (active, exclusive_range_pattern, "1.11.0", Some(37854), None), + (unstable, exclusive_range_pattern, "1.11.0", Some(37854), None), /// Allows exhaustive pattern matching on types that contain uninhabited types. - (active, exhaustive_patterns, "1.13.0", Some(51085), None), + (unstable, exhaustive_patterns, "1.13.0", Some(51085), None), /// Allows explicit tail calls via `become` expression. (incomplete, explicit_tail_calls, "1.72.0", Some(112788), None), /// Allows using `efiapi`, `sysv64` and `win64` as calling convention /// for functions with varargs. - (active, extended_varargs_abi_support, "1.65.0", Some(100189), None), + (unstable, extended_varargs_abi_support, "1.65.0", Some(100189), None), /// Allows defining `extern type`s. - (active, extern_types, "1.23.0", Some(43467), None), + (unstable, extern_types, "1.23.0", Some(43467), None), /// Allows the use of `#[ffi_const]` on foreign functions. - (active, ffi_const, "1.45.0", Some(58328), None), + (unstable, ffi_const, "1.45.0", Some(58328), None), /// Allows the use of `#[ffi_pure]` on foreign functions. - (active, ffi_pure, "1.45.0", Some(58329), None), + (unstable, ffi_pure, "1.45.0", Some(58329), None), /// Allows using `#[ffi_returns_twice]` on foreign functions. - (active, ffi_returns_twice, "1.34.0", Some(58314), None), + (unstable, ffi_returns_twice, "1.34.0", Some(58314), None), /// Allows using `#[repr(align(...))]` on function items - (active, fn_align, "1.53.0", Some(82232), None), - /// Allows generators to be cloned. - (active, generator_clone, "1.65.0", Some(95360), None), - /// Allows defining generators. - (active, generators, "1.21.0", Some(43122), None), + (unstable, fn_align, "1.53.0", Some(82232), None), + /// Allows defining gen blocks and `gen fn`. + (unstable, gen_blocks, "1.75.0", Some(117078), None), /// Infer generic args for both consts and types. - (active, generic_arg_infer, "1.55.0", Some(85077), None), + (unstable, generic_arg_infer, "1.55.0", Some(85077), None), /// An extension to the `generic_associated_types` feature, allowing incomplete features. (incomplete, generic_associated_types_extended, "1.61.0", Some(95451), None), /// Allows non-trivial generic constants which have to have wfness manually propagated to callers @@ -463,139 +467,137 @@ declare_features! ( /// Allows generic parameters and where-clauses on free & associated const items. (incomplete, generic_const_items, "1.73.0", Some(113521), None), /// Allows using `..=X` as a patterns in slices. - (active, half_open_range_patterns_in_slices, "1.66.0", Some(67264), None), + (unstable, half_open_range_patterns_in_slices, "1.66.0", Some(67264), None), /// Allows `if let` guard in match arms. - (active, if_let_guard, "1.47.0", Some(51114), None), + (unstable, if_let_guard, "1.47.0", Some(51114), None), /// Allows `impl Trait` to be used inside associated types (RFC 2515). - (active, impl_trait_in_assoc_type, "1.70.0", Some(63063), None), + (unstable, impl_trait_in_assoc_type, "1.70.0", Some(63063), None), /// Allows `impl Trait` as output type in `Fn` traits in return position of functions. - (active, impl_trait_in_fn_trait_return, "1.64.0", Some(99697), None), + (unstable, impl_trait_in_fn_trait_return, "1.64.0", Some(99697), None), /// Allows using imported `main` function - (active, imported_main, "1.53.0", Some(28937), None), + (unstable, imported_main, "1.53.0", Some(28937), None), /// Allows associated types in inherent impls. (incomplete, inherent_associated_types, "1.52.0", Some(8995), None), /// Allow anonymous constants from an inline `const` block - (active, inline_const, "1.49.0", Some(76001), None), + (unstable, inline_const, "1.49.0", Some(76001), None), /// Allow anonymous constants from an inline `const` block in pattern position (incomplete, inline_const_pat, "1.58.0", Some(76001), None), /// Allows using `pointer` and `reference` in intra-doc links - (active, intra_doc_pointers, "1.51.0", Some(80896), None), + (unstable, intra_doc_pointers, "1.51.0", Some(80896), None), // Allows setting the threshold for the `large_assignments` lint. - (active, large_assignments, "1.52.0", Some(83518), None), + (unstable, large_assignments, "1.52.0", Some(83518), None), /// Allow to have type alias types for inter-crate use. (incomplete, lazy_type_alias, "1.72.0", Some(112792), None), /// Allows `if/while p && let q = r && ...` chains. - (active, let_chains, "1.37.0", Some(53667), None), + (unstable, let_chains, "1.37.0", Some(53667), None), /// Allows using `reason` in lint attributes and the `#[expect(lint)]` lint check. - (active, lint_reasons, "1.31.0", Some(54503), None), + (unstable, lint_reasons, "1.31.0", Some(54503), None), /// Give access to additional metadata about declarative macro meta-variables. - (active, macro_metavar_expr, "1.61.0", Some(83527), None), + (unstable, macro_metavar_expr, "1.61.0", Some(83527), None), /// Allows `#[marker]` on certain traits allowing overlapping implementations. - (active, marker_trait_attr, "1.30.0", Some(29864), None), + (unstable, marker_trait_attr, "1.30.0", Some(29864), None), /// A minimal, sound subset of specialization intended to be used by the /// standard library until the soundness issues with specialization /// are fixed. - (active, min_specialization, "1.7.0", Some(31844), None), + (unstable, min_specialization, "1.7.0", Some(31844), None), /// Allows qualified paths in struct expressions, struct patterns and tuple struct patterns. - (active, more_qualified_paths, "1.54.0", Some(86935), None), + (unstable, more_qualified_paths, "1.54.0", Some(86935), None), /// Allows the `#[must_not_suspend]` attribute. - (active, must_not_suspend, "1.57.0", Some(83310), None), + (unstable, must_not_suspend, "1.57.0", Some(83310), None), /// Allows using `#[naked]` on functions. - (active, naked_functions, "1.9.0", Some(32408), None), + (unstable, naked_functions, "1.9.0", Some(32408), None), /// Allows specifying the as-needed link modifier - (active, native_link_modifiers_as_needed, "1.53.0", Some(81490), None), + (unstable, native_link_modifiers_as_needed, "1.53.0", Some(81490), None), /// Allow negative trait implementations. - (active, negative_impls, "1.44.0", Some(68318), None), + (unstable, negative_impls, "1.44.0", Some(68318), None), /// Allows the `!` type. Does not imply 'exhaustive_patterns' (below) any more. - (active, never_type, "1.13.0", Some(35121), None), + (unstable, never_type, "1.13.0", Some(35121), None), /// Allows diverging expressions to fall back to `!` rather than `()`. - (active, never_type_fallback, "1.41.0", Some(65992), None), + (unstable, never_type_fallback, "1.41.0", Some(65992), None), /// Allows `#![no_core]`. - (active, no_core, "1.3.0", Some(29639), None), + (unstable, no_core, "1.3.0", Some(29639), None), /// Allows the use of `no_sanitize` attribute. - (active, no_sanitize, "1.42.0", Some(39699), None), + (unstable, no_sanitize, "1.42.0", Some(39699), None), /// Allows using the `non_exhaustive_omitted_patterns` lint. - (active, non_exhaustive_omitted_patterns_lint, "1.57.0", Some(89554), None), + (unstable, non_exhaustive_omitted_patterns_lint, "1.57.0", Some(89554), None), /// Allows `for<T>` binders in where-clauses (incomplete, non_lifetime_binders, "1.69.0", Some(108185), None), /// Allows making `dyn Trait` well-formed even if `Trait` is not object safe. /// In that case, `dyn Trait: Trait` does not hold. Moreover, coercions and /// casts in safe Rust to `dyn Trait` for such a `Trait` is also forbidden. - (active, object_safe_for_dispatch, "1.40.0", Some(43561), None), + (unstable, object_safe_for_dispatch, "1.40.0", Some(43561), None), + /// Allows using enums in offset_of! + (unstable, offset_of_enum, "1.75.0", Some(106655), None), /// Allows using `#[optimize(X)]`. - (active, optimize_attribute, "1.34.0", Some(54882), None), - /// Allows using `#![plugin(myplugin)]`. - (active, plugin, "1.0.0", Some(29597), None), + (unstable, optimize_attribute, "1.34.0", Some(54882), None), /// Allows exhaustive integer pattern matching on `usize` and `isize`. - (active, precise_pointer_size_matching, "1.32.0", Some(56354), None), + (unstable, precise_pointer_size_matching, "1.32.0", Some(56354), None), /// Allows macro attributes on expressions, statements and non-inline modules. - (active, proc_macro_hygiene, "1.30.0", Some(54727), None), + (unstable, proc_macro_hygiene, "1.30.0", Some(54727), None), /// Allows `&raw const $place_expr` and `&raw mut $place_expr` expressions. - (active, raw_ref_op, "1.41.0", Some(64490), None), + (unstable, raw_ref_op, "1.41.0", Some(64490), None), /// Allows using the `#[register_tool]` attribute. - (active, register_tool, "1.41.0", Some(66079), None), + (unstable, register_tool, "1.41.0", Some(66079), None), /// Allows the `#[repr(i128)]` attribute for enums. (incomplete, repr128, "1.16.0", Some(56071), None), /// Allows `repr(simd)` and importing the various simd intrinsics. - (active, repr_simd, "1.4.0", Some(27731), None), - /// Allows return-position `impl Trait` in traits. - (active, return_position_impl_trait_in_trait, "1.65.0", Some(91611), None), + (unstable, repr_simd, "1.4.0", Some(27731), None), /// Allows bounding the return type of AFIT/RPITIT. (incomplete, return_type_notation, "1.70.0", Some(109417), None), /// Allows `extern "rust-cold"`. - (active, rust_cold_cc, "1.63.0", Some(97544), None), + (unstable, rust_cold_cc, "1.63.0", Some(97544), None), /// Allows the use of SIMD types in functions declared in `extern` blocks. - (active, simd_ffi, "1.0.0", Some(27731), None), + (unstable, simd_ffi, "1.0.0", Some(27731), None), /// Allows specialization of implementations (RFC 1210). (incomplete, specialization, "1.7.0", Some(31844), None), /// Allows attributes on expressions and non-item statements. - (active, stmt_expr_attributes, "1.6.0", Some(15701), None), + (unstable, stmt_expr_attributes, "1.6.0", Some(15701), None), /// Allows lints part of the strict provenance effort. - (active, strict_provenance, "1.61.0", Some(95228), None), + (unstable, strict_provenance, "1.61.0", Some(95228), None), /// Allows string patterns to dereference values to match them. - (active, string_deref_patterns, "1.67.0", Some(87121), None), + (unstable, string_deref_patterns, "1.67.0", Some(87121), None), /// Allows the use of `#[target_feature]` on safe functions. - (active, target_feature_11, "1.45.0", Some(69098), None), + (unstable, target_feature_11, "1.45.0", Some(69098), None), /// Allows using `#[thread_local]` on `static` items. - (active, thread_local, "1.0.0", Some(29594), None), + (unstable, thread_local, "1.0.0", Some(29594), None), /// Allows defining `trait X = A + B;` alias items. - (active, trait_alias, "1.24.0", Some(41517), None), + (unstable, trait_alias, "1.24.0", Some(41517), None), /// Allows dyn upcasting trait objects via supertraits. /// Dyn upcasting is casting, e.g., `dyn Foo -> dyn Bar` where `Foo: Bar`. - (active, trait_upcasting, "1.56.0", Some(65991), None), + (unstable, trait_upcasting, "1.56.0", Some(65991), None), /// Allows for transmuting between arrays with sizes that contain generic consts. - (active, transmute_generic_consts, "1.70.0", Some(109929), None), + (unstable, transmute_generic_consts, "1.70.0", Some(109929), None), /// Allows #[repr(transparent)] on unions (RFC 2645). - (active, transparent_unions, "1.37.0", Some(60405), None), + (unstable, transparent_unions, "1.37.0", Some(60405), None), /// Allows inconsistent bounds in where clauses. - (active, trivial_bounds, "1.28.0", Some(48214), None), + (unstable, trivial_bounds, "1.28.0", Some(48214), None), /// Allows using `try {...}` expressions. - (active, try_blocks, "1.29.0", Some(31436), None), + (unstable, try_blocks, "1.29.0", Some(31436), None), /// Allows `impl Trait` to be used inside type aliases (RFC 2515). - (active, type_alias_impl_trait, "1.38.0", Some(63063), None), + (unstable, type_alias_impl_trait, "1.38.0", Some(63063), None), /// Allows the use of type ascription in expressions. - (active, type_ascription, "1.6.0", Some(23416), None), + (unstable, type_ascription, "1.6.0", Some(23416), None), /// Allows creation of instances of a struct by moving fields that have /// not changed from prior instances of the same struct (RFC #2528) - (active, type_changing_struct_update, "1.58.0", Some(86555), None), + (unstable, type_changing_struct_update, "1.58.0", Some(86555), None), /// Allows using type privacy lints (`private_interfaces`, `private_bounds`, `unnameable_types`). - (active, type_privacy_lints, "1.72.0", Some(48054), None), + (unstable, type_privacy_lints, "1.72.0", Some(48054), None), /// Enables rustc to generate code that instructs libstd to NOT ignore SIGPIPE. - (active, unix_sigpipe, "1.65.0", Some(97889), None), + (unstable, unix_sigpipe, "1.65.0", Some(97889), None), /// Allows unnamed fields of struct and union type (incomplete, unnamed_fields, "1.74.0", Some(49804), None), /// Allows unsized fn parameters. - (active, unsized_fn_params, "1.49.0", Some(48055), None), + (unstable, unsized_fn_params, "1.49.0", Some(48055), None), /// Allows unsized rvalues at arguments and parameters. (incomplete, unsized_locals, "1.30.0", Some(48055), None), /// Allows unsized tuple coercion. - (active, unsized_tuple_coercion, "1.20.0", Some(42877), None), + (unstable, unsized_tuple_coercion, "1.20.0", Some(42877), None), /// Allows using the `#[used(linker)]` (or `#[used(compiler)]`) attribute. - (active, used_with_arg, "1.60.0", Some(93798), None), + (unstable, used_with_arg, "1.60.0", Some(93798), None), /// Allows `extern "wasm" fn` - (active, wasm_abi, "1.53.0", Some(83788), None), + (unstable, wasm_abi, "1.53.0", Some(83788), None), /// Allows `do yeet` expressions - (active, yeet_expr, "1.62.0", Some(96373), None), + (unstable, yeet_expr, "1.62.0", Some(96373), None), // !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! // Features are listed in alphabetical order. Tidy will fail if you don't keep it this way. // !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! |