| //! List of the accepted feature gates. |
| |
| use super::{to_nonzero, Feature, State}; |
| 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) |
| pub const ACCEPTED_FEATURES: &[Feature] = &[ |
| $( |
| Feature { |
| state: State::Accepted, |
| name: sym::$feature, |
| since: $ver, |
| issue: to_nonzero($issue), |
| edition: None, |
| } |
| ),+ |
| ]; |
| } |
| } |
| |
| #[rustfmt::skip] |
| declare_features! ( |
| // ------------------------------------------------------------------------- |
| // feature-group-start: for testing purposes |
| // ------------------------------------------------------------------------- |
| |
| /// A temporary feature gate used to enable parser extensions needed |
| /// to bootstrap fix for #5723. |
| (accepted, issue_5723_bootstrap, "1.0.0", None, None), |
| /// These are used to test this portion of the compiler, |
| /// they don't actually mean anything. |
| (accepted, test_accepted_feature, "1.0.0", None, None), |
| // !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! |
| // Features are listed in alphabetical order. Tidy will fail if you don't keep it this way. |
| // !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! |
| |
| // ------------------------------------------------------------------------- |
| // feature-group-end: for testing purposes |
| // ------------------------------------------------------------------------- |
| |
| // ------------------------------------------------------------------------- |
| // feature-group-start: accepted features |
| // ------------------------------------------------------------------------- |
| |
| /// Allows `#[target_feature(...)]` on aarch64 platforms |
| (accepted, aarch64_target_feature, "1.61.0", Some(44839), None), |
| /// Allows the sysV64 ABI to be specified on all platforms |
| /// instead of just the platforms on which it is the C ABI. |
| (accepted, abi_sysv64, "1.24.0", Some(36167), None), |
| /// Allows using ADX intrinsics from `core::arch::{x86, x86_64}`. |
| (accepted, adx_target_feature, "1.61.0", Some(44839), None), |
| /// Allows explicit discriminants on non-unit enum variants. |
| (accepted, arbitrary_enum_discriminant, "1.66.0", Some(60553), None), |
| /// Allows using `sym` operands in inline assembly. |
| (accepted, asm_sym, "1.66.0", Some(93333), None), |
| /// Allows the definition of associated constants in `trait` or `impl` blocks. |
| (accepted, associated_consts, "1.20.0", Some(29646), None), |
| /// Allows using associated `type`s in `trait`s. |
| (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 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`. |
| (accepted, augmented_assignments, "1.8.0", Some(28235), None), |
| /// Allows mixing bind-by-move in patterns and references to those identifiers in guards. |
| (accepted, bind_by_move_pattern_guards, "1.39.0", Some(15287), None), |
| /// Allows bindings in the subpattern of a binding pattern. |
| /// For example, you can write `x @ Some(y)`. |
| (accepted, bindings_after_at, "1.56.0", Some(65490), None), |
| /// Allows empty structs and enum variants with braces. |
| (accepted, braced_empty_structs, "1.8.0", Some(29720), None), |
| /// Allows `#[cfg_attr(predicate, multiple, attributes, here)]`. |
| (accepted, cfg_attr_multi, "1.33.0", Some(54881), None), |
| /// Allows the use of `#[cfg(doctest)]`, set when rustdoc is collecting doctests. |
| (accepted, cfg_doctest, "1.40.0", Some(62210), None), |
| /// Enables `#[cfg(panic = "...")]` config key. |
| (accepted, cfg_panic, "1.60.0", Some(77443), None), |
| /// Allows `cfg(target_feature = "...")`. |
| (accepted, cfg_target_feature, "1.27.0", Some(29717), None), |
| /// Allows `cfg(target_vendor = "...")`. |
| (accepted, cfg_target_vendor, "1.33.0", Some(29718), None), |
| /// Allows implementing `Clone` for closures where possible (RFC 2132). |
| (accepted, clone_closures, "1.26.0", Some(44490), None), |
| /// Allows coercing non capturing closures to function pointers. |
| (accepted, closure_to_fn_coercion, "1.19.0", Some(39817), None), |
| /// Allows usage of the `compile_error!` macro. |
| (accepted, compile_error, "1.20.0", Some(40872), None), |
| /// Allows `impl Trait` in function return types. |
| (accepted, conservative_impl_trait, "1.26.0", Some(34511), None), |
| /// Allows calling constructor functions in `const fn`. |
| (accepted, const_constructor, "1.40.0", Some(61456), None), |
| /// Allows using and casting function pointers in a `const fn`. |
| (accepted, const_fn_fn_ptr_basics, "1.61.0", Some(57563), None), |
| /// Allows trait bounds in `const fn`. |
| (accepted, const_fn_trait_bound, "1.61.0", Some(93706), None), |
| /// Allows calling `transmute` in const fn |
| (accepted, const_fn_transmute, "1.56.0", Some(53605), None), |
| /// Allows accessing fields of unions inside `const` functions. |
| (accepted, const_fn_union, "1.56.0", Some(51909), None), |
| /// Allows unsizing coercions in `const fn`. |
| (accepted, const_fn_unsize, "1.54.0", Some(64992), None), |
| /// Allows const generics to have default values (e.g. `struct Foo<const N: usize = 3>(...);`). |
| (accepted, const_generics_defaults, "1.59.0", Some(44580), None), |
| /// Allows the use of `if` and `match` in constants. |
| (accepted, const_if_match, "1.46.0", Some(49146), None), |
| /// Allows argument and return position `impl Trait` in a `const fn`. |
| (accepted, const_impl_trait, "1.61.0", Some(77463), None), |
| /// Allows indexing into constant arrays. |
| (accepted, const_indexing, "1.26.0", Some(29947), None), |
| /// Allows let bindings, assignments and destructuring in `const` functions and constants. |
| /// As long as control flow is not implemented in const eval, `&&` and `||` may not be used |
| /// at the same time as let bindings. |
| (accepted, const_let, "1.33.0", Some(48821), None), |
| /// Allows the use of `loop` and `while` in constants. |
| (accepted, const_loop, "1.46.0", Some(52000), None), |
| /// Allows panicking during const eval (producing compile-time errors). |
| (accepted, const_panic, "1.57.0", Some(51999), None), |
| /// Allows dereferencing raw pointers during const eval. |
| (accepted, const_raw_ptr_deref, "1.58.0", Some(51911), None), |
| /// Allows implementing `Copy` for closures where possible (RFC 2132). |
| (accepted, copy_closures, "1.26.0", Some(44490), None), |
| /// Allows `crate` in paths. |
| (accepted, crate_in_paths, "1.30.0", Some(45477), None), |
| /// Allows using assigning a default type to type parameters in algebraic data type definitions. |
| (accepted, default_type_params, "1.0.0", None, None), |
| /// Allows `#[deprecated]` attribute. |
| (accepted, deprecated, "1.9.0", Some(29935), None), |
| /// Allows `#[derive(Default)]` and `#[default]` on enums. |
| (accepted, derive_default_enum, "1.62.0", Some(86985), None), |
| /// Allows the use of destructuring assignments. |
| (accepted, destructuring_assignment, "1.59.0", Some(71126), None), |
| /// Allows `#[doc(alias = "...")]`. |
| (accepted, doc_alias, "1.48.0", Some(50146), None), |
| /// Allows `..` in tuple (struct) patterns. |
| (accepted, dotdot_in_tuple_patterns, "1.14.0", Some(33627), None), |
| /// Allows `..=` in patterns (RFC 1192). |
| (accepted, dotdoteq_in_patterns, "1.26.0", Some(28237), None), |
| /// Allows `Drop` types in constants (RFC 1440). |
| (accepted, drop_types_in_const, "1.22.0", Some(33156), None), |
| /// Allows using `dyn Trait` as a syntax for trait objects. |
| (accepted, dyn_trait, "1.27.0", Some(44662), None), |
| /// Allows integer match exhaustiveness checking (RFC 2591). |
| (accepted, exhaustive_integer_patterns, "1.33.0", Some(50907), None), |
| /// Allows explicit generic arguments specification with `impl Trait` present. |
| (accepted, explicit_generic_args_with_impl_trait, "1.63.0", Some(83701), None), |
| /// Allows arbitrary expressions in key-value attributes at parse time. |
| (accepted, extended_key_value_attributes, "1.54.0", Some(78835), None), |
| /// Allows resolving absolute paths as paths from other crates. |
| (accepted, extern_absolute_paths, "1.30.0", Some(44660), None), |
| /// Allows `extern crate foo as bar;`. This puts `bar` into extern prelude. |
| (accepted, extern_crate_item_prelude, "1.31.0", Some(55599), None), |
| /// Allows `extern crate self as foo;`. |
| /// This puts local crate root into extern prelude under name `foo`. |
| (accepted, extern_crate_self, "1.34.0", Some(56409), None), |
| /// Allows access to crate names passed via `--extern` through prelude. |
| (accepted, extern_prelude, "1.30.0", Some(44660), None), |
| /// Allows field shorthands (`x` meaning `x: x`) in struct literal expressions. |
| (accepted, field_init_shorthand, "1.17.0", Some(37340), None), |
| /// Allows `#[must_use]` on functions, and introduces must-use operators (RFC 1940). |
| (accepted, fn_must_use, "1.27.0", Some(43302), None), |
| /// Allows capturing variables in scope using format_args! |
| (accepted, format_args_capture, "1.58.0", Some(67984), None), |
| /// Allows associated types to be generic, e.g., `type Foo<T>;` (RFC 1598). |
| (accepted, generic_associated_types, "1.65.0", Some(44265), None), |
| /// Allows attributes on lifetime/type formal parameters in generics (RFC 1327). |
| (accepted, generic_param_attrs, "1.27.0", Some(48848), None), |
| /// Allows the `#[global_allocator]` attribute. |
| (accepted, global_allocator, "1.28.0", Some(27389), None), |
| // FIXME: explain `globs`. |
| (accepted, globs, "1.0.0", None, None), |
| /// Allows using `..=X` as a pattern. |
| (accepted, half_open_range_patterns, "1.66.0", Some(67264), None), |
| /// Allows using the `u128` and `i128` types. |
| (accepted, i128_type, "1.26.0", Some(35118), None), |
| /// Allows the use of `if let` expressions. |
| (accepted, if_let, "1.0.0", None, None), |
| /// Allows top level or-patterns (`p | q`) in `if let` and `while let`. |
| (accepted, if_while_or_patterns, "1.33.0", Some(48215), None), |
| /// Allows lifetime elision in `impl` headers. For example: |
| /// + `impl<I:Iterator> Iterator for &mut Iterator` |
| /// + `impl Debug for Foo<'_>` |
| (accepted, impl_header_lifetime_elision, "1.31.0", Some(15872), None), |
| /// Allows using `a..=b` and `..=b` as inclusive range syntaxes. |
| (accepted, inclusive_range_syntax, "1.26.0", Some(28237), None), |
| /// Allows inferring outlives requirements (RFC 2093). |
| (accepted, infer_outlives_requirements, "1.30.0", Some(44493), None), |
| /// Allows irrefutable patterns in `if let` and `while let` statements (RFC 2086). |
| (accepted, irrefutable_let_patterns, "1.33.0", Some(44495), None), |
| /// Allows some increased flexibility in the name resolution rules, |
| /// especially around globs and shadowing (RFC 1560). |
| (accepted, item_like_imports, "1.15.0", Some(35120), None), |
| /// Allows `'a: { break 'a; }`. |
| (accepted, label_break_value, "1.65.0", Some(48594), None), |
| /// Allows `let...else` statements. |
| (accepted, let_else, "1.65.0", Some(87335), None), |
| /// Allows `break {expr}` with a value inside `loop`s. |
| (accepted, loop_break_value, "1.19.0", Some(37339), None), |
| /// Allows use of `?` as the Kleene "at most one" operator in macros. |
| (accepted, macro_at_most_once_rep, "1.32.0", Some(48075), None), |
| /// Allows macro attributes to observe output of `#[derive]`. |
| (accepted, macro_attributes_in_derive_output, "1.57.0", Some(81119), None), |
| /// Allows use of the `:lifetime` macro fragment specifier. |
| (accepted, macro_lifetime_matcher, "1.27.0", Some(34303), None), |
| /// Allows use of the `:literal` macro fragment specifier (RFC 1576). |
| (accepted, macro_literal_matcher, "1.32.0", Some(35625), None), |
| /// Allows `macro_rules!` items. |
| (accepted, macro_rules, "1.0.0", None, None), |
| /// Allows use of the `:vis` macro fragment specifier |
| (accepted, macro_vis_matcher, "1.30.0", Some(41022), None), |
| /// Allows macro invocations in `extern {}` blocks. |
| (accepted, macros_in_extern, "1.40.0", Some(49476), None), |
| /// Allows '|' at beginning of match arms (RFC 1925). |
| (accepted, match_beginning_vert, "1.25.0", Some(44101), None), |
| /// Allows default match binding modes (RFC 2005). |
| (accepted, match_default_bindings, "1.26.0", Some(42640), None), |
| /// Allows `impl Trait` with multiple unrelated lifetimes. |
| (accepted, member_constraints, "1.54.0", Some(61997), None), |
| /// Allows the definition of `const fn` functions. |
| (accepted, min_const_fn, "1.31.0", Some(53555), None), |
| /// The smallest useful subset of const generics. |
| (accepted, min_const_generics, "1.51.0", Some(74878), None), |
| /// Allows calling `const unsafe fn` inside `unsafe` blocks in `const fn` functions. |
| (accepted, min_const_unsafe_fn, "1.33.0", Some(55607), None), |
| /// Allows using `Self` and associated types in struct expressions and patterns. |
| (accepted, more_struct_aliases, "1.16.0", Some(37544), None), |
| /// Allows patterns with concurrent by-move and by-ref bindings. |
| /// For example, you can write `Foo(a, ref b)` where `a` is by-move and `b` is by-ref. |
| (accepted, move_ref_pattern, "1.49.0", Some(68354), None), |
| /// Allows specifying modifiers in the link attribute: `#[link(modifiers = "...")]` |
| (accepted, native_link_modifiers, "1.61.0", Some(81490), None), |
| /// Allows specifying the bundle link modifier |
| (accepted, native_link_modifiers_bundle, "1.63.0", Some(81490), None), |
| /// Allows specifying the whole-archive link modifier |
| (accepted, native_link_modifiers_whole_archive, "1.61.0", Some(81490), None), |
| /// Allows using non lexical lifetimes (RFC 2094). |
| (accepted, nll, "1.63.0", Some(43234), None), |
| /// Allows using `#![no_std]`. |
| (accepted, no_std, "1.6.0", None, None), |
| /// Allows defining identifiers beyond ASCII. |
| (accepted, non_ascii_idents, "1.53.0", Some(55467), None), |
| /// Allows future-proofing enums/structs with the `#[non_exhaustive]` attribute (RFC 2008). |
| (accepted, non_exhaustive, "1.40.0", Some(44109), None), |
| /// Allows `foo.rs` as an alternative to `foo/mod.rs`. |
| (accepted, non_modrs_mods, "1.30.0", Some(44660), None), |
| /// Allows the use of or-patterns (e.g., `0 | 1`). |
| (accepted, or_patterns, "1.53.0", Some(54883), None), |
| /// Allows annotating functions conforming to `fn(&PanicInfo) -> !` with `#[panic_handler]`. |
| /// This defines the behavior of panics. |
| (accepted, panic_handler, "1.30.0", Some(44489), None), |
| /// Allows attributes in formal function parameters. |
| (accepted, param_attrs, "1.39.0", Some(60406), None), |
| /// Allows parentheses in patterns. |
| (accepted, pattern_parentheses, "1.31.0", Some(51087), None), |
| /// Allows procedural macros in `proc-macro` crates. |
| (accepted, proc_macro, "1.29.0", Some(38356), None), |
| /// Allows multi-segment paths in attributes and derives. |
| (accepted, proc_macro_path_invoc, "1.30.0", Some(38356), None), |
| /// Allows `pub(restricted)` visibilities (RFC 1422). |
| (accepted, pub_restricted, "1.18.0", Some(32409), None), |
| /// Allows use of the postfix `?` operator in expressions. |
| (accepted, question_mark, "1.13.0", Some(31436), None), |
| /// Allows keywords to be escaped for use as identifiers. |
| (accepted, raw_identifiers, "1.30.0", Some(48589), None), |
| /// Allows relaxing the coherence rules such that |
| /// `impl<T> ForeignTrait<LocalType> for ForeignType<T>` is permitted. |
| (accepted, re_rebalance_coherence, "1.41.0", Some(55437), None), |
| /// Allows numeric fields in struct expressions and patterns. |
| (accepted, relaxed_adts, "1.19.0", Some(35626), None), |
| /// Lessens the requirements for structs to implement `Unsize`. |
| (accepted, relaxed_struct_unsize, "1.58.0", Some(81793), None), |
| /// Allows `repr(align(16))` struct attribute (RFC 1358). |
| (accepted, repr_align, "1.25.0", Some(33626), None), |
| /// Allows using `#[repr(align(X))]` on enums with equivalent semantics |
| /// to wrapping an enum in a wrapper struct with `#[repr(align(X))]`. |
| (accepted, repr_align_enum, "1.37.0", Some(57996), None), |
| /// Allows `#[repr(packed(N))]` attribute on structs. |
| (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 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). |
| (accepted, self_in_typedefs, "1.32.0", Some(49303), None), |
| /// Allows `Self` struct constructor (RFC 2302). |
| (accepted, self_struct_ctor, "1.32.0", Some(51994), None), |
| /// Allows using subslice patterns, `[a, .., b]` and `[a, xs @ .., b]`. |
| (accepted, slice_patterns, "1.42.0", Some(62254), None), |
| /// Allows use of `&foo[a..b]` as a slicing syntax. |
| (accepted, slicing_syntax, "1.0.0", None, None), |
| /// Allows elision of `'static` lifetimes in `static`s and `const`s. |
| (accepted, static_in_const, "1.17.0", Some(35897), None), |
| /// Allows the definition recursive static items. |
| (accepted, static_recursion, "1.17.0", Some(29719), None), |
| /// Allows attributes on struct literal fields. |
| (accepted, struct_field_attributes, "1.20.0", Some(38814), None), |
| /// Allows struct variants `Foo { baz: u8, .. }` in enums (RFC 418). |
| (accepted, struct_variant, "1.0.0", None, None), |
| /// Allows `#[target_feature(...)]`. |
| (accepted, target_feature, "1.27.0", None, None), |
| /// Allows `fn main()` with return types which implements `Termination` (RFC 1937). |
| (accepted, termination_trait, "1.26.0", Some(43301), None), |
| /// Allows `#[test]` functions where the return type implements `Termination` (RFC 1937). |
| (accepted, termination_trait_test, "1.27.0", Some(48854), None), |
| /// Allows attributes scoped to tools. |
| (accepted, tool_attributes, "1.30.0", Some(44690), None), |
| /// Allows scoped lints. |
| (accepted, tool_lints, "1.31.0", Some(44690), None), |
| /// Allows `#[track_caller]` to be used which provides |
| /// accurate caller location reporting during panic (RFC 2091). |
| (accepted, track_caller, "1.46.0", Some(47809), None), |
| /// Allows #[repr(transparent)] on univariant enums (RFC 2645). |
| (accepted, transparent_enums, "1.42.0", Some(60405), None), |
| /// Allows indexing tuples. |
| (accepted, tuple_indexing, "1.0.0", None, None), |
| /// Allows paths to enum variants on type aliases including `Self`. |
| (accepted, type_alias_enum_variants, "1.37.0", Some(49683), None), |
| /// Allows macros to appear in the type position. |
| (accepted, type_macros, "1.13.0", Some(27245), None), |
| /// Allows `const _: TYPE = VALUE`. |
| (accepted, underscore_const_names, "1.37.0", Some(54912), None), |
| /// Allows `use path as _;` and `extern crate c as _;`. |
| (accepted, underscore_imports, "1.33.0", Some(48216), None), |
| /// Allows `'_` placeholder lifetimes. |
| (accepted, underscore_lifetimes, "1.26.0", Some(44524), None), |
| /// Allows `use x::y;` to search `x` in the current scope. |
| (accepted, uniform_paths, "1.32.0", Some(53130), None), |
| /// Allows `impl Trait` in function arguments. |
| (accepted, universal_impl_trait, "1.26.0", Some(34511), None), |
| /// Allows arbitrary delimited token streams in non-macro attributes. |
| (accepted, unrestricted_attribute_tokens, "1.34.0", Some(55208), None), |
| /// The `unsafe_op_in_unsafe_fn` lint (allowed by default): no longer treat an unsafe function as an unsafe block. |
| (accepted, unsafe_block_in_unsafe_fn, "1.52.0", Some(71668), None), |
| /// Allows importing and reexporting macros with `use`, |
| /// enables macro modularization in general. |
| (accepted, use_extern_macros, "1.30.0", Some(35896), None), |
| /// Allows nested groups in `use` items (RFC 2128). |
| (accepted, use_nested_groups, "1.25.0", Some(44494), None), |
| /// Allows `#[used]` to preserve symbols (see llvm.compiler.used). |
| (accepted, used, "1.30.0", Some(40289), None), |
| /// Allows the use of `while let` expressions. |
| (accepted, while_let, "1.0.0", None, None), |
| /// Allows `#![windows_subsystem]`. |
| (accepted, windows_subsystem, "1.18.0", Some(37499), None), |
| // !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! |
| // Features are listed in alphabetical order. Tidy will fail if you don't keep it this way. |
| // !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! |
| |
| // ------------------------------------------------------------------------- |
| // feature-group-end: accepted features |
| // ------------------------------------------------------------------------- |
| ); |
