Rename ACTIVE_FEATURES as UNSTABLE_FEATURES.
It's a better name, and lets "active features" refer to the features that are active in a particular program, due to being declared or enabled by the edition. The commit also renames `Features::enabled` as `Features::active` to match this; I changed my mind and have decided that "active" is a little better thatn "enabled" for this, particularly because a number of pre-existing comments use "active" in this way. Finally, the commit renames `Status::Stable` as `Status::Accepted`, to match `ACCEPTED_FEATURES`.
This commit is contained in:
Nicholas Nethercote
parent
41b6899487
commit
d284c8a2d7
14 changed files with 199 additions and 201 deletions
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@ -7,7 +7,7 @@ macro_rules! declare_features {
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($(
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$(#[doc = $doc:tt])* (accepted, $feature:ident, $ver:expr, $issue:expr, None),
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)+) => {
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/// Those language feature has since been Accepted (it was once Active)
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/// Formerly unstable features that have now been accepted (stabilized).
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pub const ACCEPTED_FEATURES: &[Feature] = &[
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$(Feature {
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name: sym::$feature,
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@ -16,9 +16,9 @@
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#![deny(rustc::diagnostic_outside_of_impl)]
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mod accepted;
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mod active;
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mod builtin_attrs;
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mod removed;
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mod unstable;
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#[cfg(test)]
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mod tests;
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@ -44,9 +44,9 @@ pub enum Stability {
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#[derive(Clone, Copy, Debug, Hash)]
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pub enum UnstableFeatures {
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/// Hard errors for unstable features are active, as on beta/stable channels.
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/// Disallow use of unstable features, as on beta/stable channels.
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Disallow,
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/// Allow features to be activated, as on nightly.
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/// Allow use of unstable features, as on nightly.
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Allow,
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/// Errors are bypassed for bootstrapping. This is required any time
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/// during the build that feature-related lints are set to warn or above
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@ -87,7 +87,7 @@ impl UnstableFeatures {
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fn find_lang_feature_issue(feature: Symbol) -> Option<NonZeroU32> {
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// Search in all the feature lists.
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if let Some(f) = ACTIVE_FEATURES.iter().find(|f| f.feature.name == feature) {
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if let Some(f) = UNSTABLE_FEATURES.iter().find(|f| f.feature.name == feature) {
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return f.feature.issue;
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}
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if let Some(f) = ACCEPTED_FEATURES.iter().find(|f| f.name == feature) {
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@ -121,7 +121,6 @@ pub fn find_feature_issue(feature: Symbol, issue: GateIssue) -> Option<NonZeroU3
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}
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pub use accepted::ACCEPTED_FEATURES;
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pub use active::{Features, ACTIVE_FEATURES, INCOMPATIBLE_FEATURES};
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pub use builtin_attrs::AttributeDuplicates;
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pub use builtin_attrs::{
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deprecated_attributes, find_gated_cfg, is_builtin_attr_name, is_builtin_only_local,
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@ -129,3 +128,4 @@ pub use builtin_attrs::{
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GatedCfg, BUILTIN_ATTRIBUTES, BUILTIN_ATTRIBUTE_MAP,
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};
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pub use removed::REMOVED_FEATURES;
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pub use unstable::{Features, INCOMPATIBLE_FEATURES, UNSTABLE_FEATURES};
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@ -12,7 +12,7 @@ macro_rules! declare_features {
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($(
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$(#[doc = $doc:tt])* (removed, $feature:ident, $ver:expr, $issue:expr, None, $reason:expr),
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)+) => {
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/// Represents unstable features which have since been removed (it was once Active)
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/// Formerly unstable features that have now been removed.
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pub const REMOVED_FEATURES: &[RemovedFeature] = &[
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$(RemovedFeature {
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feature: Feature {
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@ -1,4 +1,4 @@
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//! List of the active feature gates.
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//! List of the unstable feature gates.
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use super::{to_nonzero, Feature};
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@ -7,7 +7,7 @@ use rustc_span::edition::Edition;
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use rustc_span::symbol::{sym, Symbol};
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use rustc_span::Span;
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pub struct ActiveFeature {
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pub struct UnstableFeature {
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pub feature: Feature,
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pub set_enabled: fn(&mut Features),
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}
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@ -20,7 +20,7 @@ enum FeatureStatus {
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}
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macro_rules! status_to_enum {
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(active) => {
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(unstable) => {
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FeatureStatus::Default
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};
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(incomplete) => {
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@ -35,10 +35,10 @@ macro_rules! declare_features {
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($(
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$(#[doc = $doc:tt])* ($status:ident, $feature:ident, $ver:expr, $issue:expr, $edition:expr),
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)+) => {
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/// Represents active features that are currently being implemented or
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/// currently being considered for addition/removal.
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pub const ACTIVE_FEATURES: &[ActiveFeature] = &[
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$(ActiveFeature {
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/// Unstable language features that are being implemented or being
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/// considered for acceptance (stabilization) or removal.
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pub const UNSTABLE_FEATURES: &[UnstableFeature] = &[
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$(UnstableFeature {
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feature: Feature {
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name: sym::$feature,
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since: $ver,
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@ -59,7 +59,7 @@ macro_rules! declare_features {
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pub declared_lib_features: Vec<(Symbol, Span)>,
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/// `declared_lang_features` + `declared_lib_features`.
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pub declared_features: FxHashSet<Symbol>,
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/// Individual features (unstable only).
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/// Active state of individual features (unstable only).
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$(
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$(#[doc = $doc])*
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pub $feature: bool
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@ -92,11 +92,11 @@ macro_rules! declare_features {
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self.declared_features.contains(&feature)
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}
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/// Is the given feature enabled, i.e. declared or automatically
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/// Is the given feature active, i.e. declared or automatically
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/// enabled due to the edition?
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///
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/// Panics if the symbol doesn't correspond to a declared feature.
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pub fn enabled(&self, feature: Symbol) -> bool {
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pub fn active(&self, feature: Symbol) -> bool {
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match feature {
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$( sym::$feature => self.$feature, )*
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@ -112,22 +112,21 @@ macro_rules! declare_features {
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$(
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sym::$feature => status_to_enum!($status) == FeatureStatus::Incomplete,
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)*
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// accepted and removed features aren't in this file but are never incomplete
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// Accepted/removed features aren't in this file but are never incomplete.
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_ if self.declared_features.contains(&feature) => false,
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_ => panic!("`{}` was not listed in `declare_features`", feature),
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}
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}
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/// Some features are internal to the compiler and standard library and should not
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/// be used in normal projects. We warn the user about these
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/// to alert them.
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/// be used in normal projects. We warn the user about these to alert them.
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pub fn internal(&self, feature: Symbol) -> bool {
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match feature {
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$(
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sym::$feature => status_to_enum!($status) == FeatureStatus::Internal,
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)*
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// accepted and removed features aren't in this file but are never internal
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// (a removed feature might have been internal, but it doesn't matter anymore)
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// Accepted/removed features aren't in this file but are never internal
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// (a removed feature might have been internal, but that's now irrelevant).
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_ if self.declared_features.contains(&feature) => false,
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_ => panic!("`{}` was not listed in `declare_features`", feature),
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}
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@ -145,8 +144,7 @@ macro_rules! declare_features {
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// accepted or `removed.rs` if removed.
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//
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// The version numbers here correspond to the version in which the current status
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// was set. This is most important for knowing when a particular feature became
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// stable (active).
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// was set.
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//
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// Note that the features are grouped into internal/user-facing and then
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// sorted by version inside those groups. This is enforced with tidy.
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@ -162,9 +160,9 @@ declare_features! (
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// no-tracking-issue-start
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/// Allows using the `unadjusted` ABI; perma-unstable.
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(active, abi_unadjusted, "1.16.0", None, None),
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(unstable, abi_unadjusted, "1.16.0", None, None),
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/// Allows using the `vectorcall` ABI.
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(active, abi_vectorcall, "1.7.0", None, None),
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(unstable, abi_vectorcall, "1.7.0", None, None),
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/// Allows using `#![needs_allocator]`, an implementation detail of `#[global_allocator]`.
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(internal, allocator_internals, "1.20.0", None, None),
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/// Allows using `#[allow_internal_unsafe]`. This is an
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@ -178,21 +176,21 @@ declare_features! (
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/// macros disappear).
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(internal, allow_internal_unstable, "1.0.0", None, None),
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/// Allows using anonymous lifetimes in argument-position impl-trait.
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(active, anonymous_lifetime_in_impl_trait, "1.63.0", None, None),
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(unstable, anonymous_lifetime_in_impl_trait, "1.63.0", None, None),
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/// Allows identifying the `compiler_builtins` crate.
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(internal, compiler_builtins, "1.13.0", None, None),
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/// Allows writing custom MIR
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(internal, custom_mir, "1.65.0", None, None),
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/// Outputs useful `assert!` messages
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(active, generic_assert, "1.63.0", None, None),
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(unstable, generic_assert, "1.63.0", None, None),
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/// Allows using the `rust-intrinsic`'s "ABI".
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(internal, intrinsics, "1.0.0", None, None),
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/// Allows using `#[lang = ".."]` attribute for linking items to special compiler logic.
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(internal, lang_items, "1.0.0", None, None),
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/// Allows `#[link(..., cfg(..))]`; perma-unstable per #37406
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(active, link_cfg, "1.14.0", None, None),
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(unstable, link_cfg, "1.14.0", None, None),
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/// Allows the `multiple_supertrait_upcastable` lint.
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(active, multiple_supertrait_upcastable, "1.69.0", None, None),
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(unstable, multiple_supertrait_upcastable, "1.69.0", None, None),
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/// Allow negative trait bounds. This is an internal-only feature for testing the trait solver!
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(incomplete, negative_bounds, "1.71.0", None, None),
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/// Allows using `#[omit_gdb_pretty_printer_section]`.
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@ -214,7 +212,7 @@ declare_features! (
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(internal, unsafe_pin_internals, "1.60.0", None, None),
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/// Use for stable + negative coherence and strict coherence depending on trait's
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/// rustc_strict_coherence value.
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(active, with_negative_coherence, "1.60.0", None, None),
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(unstable, with_negative_coherence, "1.60.0", None, None),
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// !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!!
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// Features are listed in alphabetical order. Tidy will fail if you don't keep it this way.
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// !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!!
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@ -230,20 +228,20 @@ declare_features! (
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/// Allows features specific to auto traits.
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/// Renamed from `optin_builtin_traits`.
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(active, auto_traits, "1.50.0", Some(13231), None),
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(unstable, auto_traits, "1.50.0", Some(13231), None),
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/// Allows using `box` in patterns (RFC 469).
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(active, box_patterns, "1.0.0", Some(29641), None),
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(unstable, box_patterns, "1.0.0", Some(29641), None),
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/// Allows `#[doc(notable_trait)]`.
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/// Renamed from `doc_spotlight`.
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(active, doc_notable_trait, "1.52.0", Some(45040), None),
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(unstable, doc_notable_trait, "1.52.0", Some(45040), None),
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/// Allows using the `may_dangle` attribute (RFC 1327).
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(active, dropck_eyepatch, "1.10.0", Some(34761), None),
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(unstable, dropck_eyepatch, "1.10.0", Some(34761), None),
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/// Allows using the `#[fundamental]` attribute.
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(active, fundamental, "1.0.0", Some(29635), None),
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(unstable, fundamental, "1.0.0", Some(29635), None),
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/// Allows using `#[link_name="llvm.*"]`.
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(internal, link_llvm_intrinsics, "1.0.0", Some(29602), None),
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/// Allows using the `#[linkage = ".."]` attribute.
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(active, linkage, "1.0.0", Some(29603), None),
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(unstable, linkage, "1.0.0", Some(29603), None),
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/// Allows declaring with `#![needs_panic_runtime]` that a panic runtime is needed.
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(internal, needs_panic_runtime, "1.10.0", Some(32837), None),
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/// Allows using the `#![panic_runtime]` attribute.
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@ -255,19 +253,19 @@ declare_features! (
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/// purpose as `#[allow_internal_unstable]`.
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(internal, rustc_allow_const_fn_unstable, "1.49.0", Some(69399), None),
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/// Allows using compiler's own crates.
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(active, rustc_private, "1.0.0", Some(27812), None),
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(unstable, rustc_private, "1.0.0", Some(27812), None),
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/// Allows using internal rustdoc features like `doc(keyword)`.
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(internal, rustdoc_internals, "1.58.0", Some(90418), None),
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/// Allows using the `rustdoc::missing_doc_code_examples` lint
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(active, rustdoc_missing_doc_code_examples, "1.31.0", Some(101730), None),
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(unstable, rustdoc_missing_doc_code_examples, "1.31.0", Some(101730), None),
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/// Allows using `#[start]` on a function indicating that it is the program entrypoint.
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(active, start, "1.0.0", Some(29633), None),
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(unstable, start, "1.0.0", Some(29633), None),
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/// Allows using `#[structural_match]` which indicates that a type is structurally matchable.
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/// FIXME: Subsumed by trait `StructuralPartialEq`, cannot move to removed until a library
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/// feature with the same name exists.
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(active, structural_match, "1.8.0", Some(31434), None),
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(unstable, structural_match, "1.8.0", Some(31434), None),
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/// Allows using the `rust-call` ABI.
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(active, unboxed_closures, "1.0.0", Some(29625), None),
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(unstable, unboxed_closures, "1.0.0", Some(29625), None),
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// !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!!
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// Features are listed in alphabetical order. Tidy will fail if you don't keep it this way.
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// !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!!
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@ -283,20 +281,20 @@ declare_features! (
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// FIXME: Document these and merge with the list below.
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// Unstable `#[target_feature]` directives.
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(active, aarch64_ver_target_feature, "1.27.0", Some(44839), None),
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(active, arm_target_feature, "1.27.0", Some(44839), None),
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(active, avx512_target_feature, "1.27.0", Some(44839), None),
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(active, bpf_target_feature, "1.54.0", Some(44839), None),
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(active, csky_target_feature, "1.73.0", Some(44839), None),
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(active, ermsb_target_feature, "1.49.0", Some(44839), None),
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(active, hexagon_target_feature, "1.27.0", Some(44839), None),
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(active, mips_target_feature, "1.27.0", Some(44839), None),
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(active, powerpc_target_feature, "1.27.0", Some(44839), None),
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(active, riscv_target_feature, "1.45.0", Some(44839), None),
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(active, rtm_target_feature, "1.35.0", Some(44839), None),
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(active, sse4a_target_feature, "1.27.0", Some(44839), None),
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(active, tbm_target_feature, "1.27.0", Some(44839), None),
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(active, wasm_target_feature, "1.30.0", Some(44839), None),
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(unstable, aarch64_ver_target_feature, "1.27.0", Some(44839), None),
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(unstable, arm_target_feature, "1.27.0", Some(44839), None),
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(unstable, avx512_target_feature, "1.27.0", Some(44839), None),
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(unstable, bpf_target_feature, "1.54.0", Some(44839), None),
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(unstable, csky_target_feature, "1.73.0", Some(44839), None),
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(unstable, ermsb_target_feature, "1.49.0", Some(44839), None),
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(unstable, hexagon_target_feature, "1.27.0", Some(44839), None),
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(unstable, mips_target_feature, "1.27.0", Some(44839), None),
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(unstable, powerpc_target_feature, "1.27.0", Some(44839), None),
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(unstable, riscv_target_feature, "1.45.0", Some(44839), None),
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(unstable, rtm_target_feature, "1.35.0", Some(44839), None),
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(unstable, sse4a_target_feature, "1.27.0", Some(44839), None),
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(unstable, tbm_target_feature, "1.27.0", Some(44839), None),
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(unstable, wasm_target_feature, "1.30.0", Some(44839), None),
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// !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!!
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// Features are listed in alphabetical order. Tidy will fail if you don't keep it this way.
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// !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!!
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@ -310,155 +308,155 @@ declare_features! (
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// -------------------------------------------------------------------------
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/// Allows using the `amdgpu-kernel` ABI.
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(active, abi_amdgpu_kernel, "1.29.0", Some(51575), None),
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(unstable, abi_amdgpu_kernel, "1.29.0", Some(51575), None),
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/// Allows `extern "avr-interrupt" fn()` and `extern "avr-non-blocking-interrupt" fn()`.
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(active, abi_avr_interrupt, "1.45.0", Some(69664), None),
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(unstable, abi_avr_interrupt, "1.45.0", Some(69664), None),
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/// Allows `extern "C-cmse-nonsecure-call" fn()`.
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(active, abi_c_cmse_nonsecure_call, "1.51.0", Some(81391), None),
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(unstable, abi_c_cmse_nonsecure_call, "1.51.0", Some(81391), None),
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/// Allows `extern "msp430-interrupt" fn()`.
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(active, abi_msp430_interrupt, "1.16.0", Some(38487), None),
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(unstable, abi_msp430_interrupt, "1.16.0", Some(38487), None),
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/// Allows `extern "ptx-*" fn()`.
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(active, abi_ptx, "1.15.0", Some(38788), None),
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(unstable, abi_ptx, "1.15.0", Some(38788), None),
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/// Allows `extern "riscv-interrupt-m" fn()` and `extern "riscv-interrupt-s" fn()`.
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(active, abi_riscv_interrupt, "1.73.0", Some(111889), None),
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(unstable, abi_riscv_interrupt, "1.73.0", Some(111889), None),
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/// Allows `extern "x86-interrupt" fn()`.
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(active, abi_x86_interrupt, "1.17.0", Some(40180), None),
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(unstable, abi_x86_interrupt, "1.17.0", Some(40180), None),
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/// Allows additional const parameter types, such as `&'static str` or user defined types
|
||||
(incomplete, adt_const_params, "1.56.0", Some(95174), None),
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/// Allows defining an `#[alloc_error_handler]`.
|
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(active, alloc_error_handler, "1.29.0", Some(51540), None),
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(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),
|
||||
(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),
|
||||
(unstable, cfi_encoding, "1.71.0", Some(89653), None),
|
||||
/// Allows `for<...>` on closures and generators.
|
||||
(active, closure_lifetime_binder, "1.64.0", Some(97362), None),
|
||||
(unstable, 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, 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 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),
|
||||
(unstable, fn_align, "1.53.0", Some(82232), None),
|
||||
/// Allows generators to be cloned.
|
||||
(active, generator_clone, "1.65.0", Some(95360), None),
|
||||
(unstable, generator_clone, "1.65.0", Some(95360), None),
|
||||
/// Allows defining generators.
|
||||
(active, generators, "1.21.0", Some(43122), None),
|
||||
(unstable, generators, "1.21.0", Some(43122), 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
|
||||
|
|
@ -466,137 +464,137 @@ 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 `#[optimize(X)]`.
|
||||
(active, optimize_attribute, "1.34.0", Some(54882), None),
|
||||
(unstable, optimize_attribute, "1.34.0", Some(54882), None),
|
||||
/// Allows using `#![plugin(myplugin)]`.
|
||||
(active, plugin, "1.0.0", Some(29597), None),
|
||||
(unstable, plugin, "1.0.0", Some(29597), 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),
|
||||
(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.
|
||||
// !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!!
|
||||
Loading…
Add table
Add a link
Reference in a new issue