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Cleanup 'active' declare_features! with uniform style + sorting.

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Mazdak Farrokhzad 2019-04-29 01:46:45 +02:00
parent 00859e3e65
commit 3c00dfdf81
2 changed files with 351 additions and 276 deletions
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601
src/libsyntax/feature_gate.rs
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@ -108,287 +108,156 @@ macro_rules! declare_features {
// was set. This is most important for knowing when a particular feature became // was set. This is most important for knowing when a particular feature became
// stable (active). // stable (active).
// //
// Note that the features should be grouped into internal/user-facing
// and then sorted by version inside those groups.
// FIXME(60361): Enforce ^-- with tidy.
//
// N.B., `tools/tidy/src/features.rs` parses this information directly out of the // N.B., `tools/tidy/src/features.rs` parses this information directly out of the
// source, so take care when modifying it. // source, so take care when modifying it.
declare_features! ( declare_features! (
(active, asm, "1.0.0", Some(29722), None), // -------------------------------------------------------------------------
(active, concat_idents, "1.0.0", Some(29599), None), // Internal feature gates.
(active, link_args, "1.0.0", Some(29596), None), // -------------------------------------------------------------------------
(active, log_syntax, "1.0.0", Some(29598), None),
(active, non_ascii_idents, "1.0.0", Some(55467), None),
(active, plugin_registrar, "1.0.0", Some(29597), None),
(active, thread_local, "1.0.0", Some(29594), None),
(active, trace_macros, "1.0.0", Some(29598), None),
// rustc internal, for now // no tracking issue START
// Allows using the `rust-intrinsic`'s "ABI".
(active, intrinsics, "1.0.0", None, None), (active, intrinsics, "1.0.0", None, None),
// Allows using `#[lang = ".."]` attribute for linking items to special compiler logic.
(active, lang_items, "1.0.0", None, None), (active, lang_items, "1.0.0", None, None),
(active, format_args_nl, "1.29.0", None, None),
(active, link_llvm_intrinsics, "1.0.0", Some(29602), None), // Allows using the `#[stable]` and `#[unstable]` attributes.
(active, linkage, "1.0.0", Some(29603), None),
// rustc internal
(active, rustc_diagnostic_macros, "1.0.0", None, None),
(active, rustc_const_unstable, "1.0.0", None, None),
(active, box_syntax, "1.0.0", Some(49733), None),
(active, unboxed_closures, "1.0.0", Some(29625), None),
(active, fundamental, "1.0.0", Some(29635), None),
(active, main, "1.0.0", Some(29634), None),
(active, needs_allocator, "1.4.0", Some(27389), None),
(active, on_unimplemented, "1.0.0", Some(29628), None),
(active, plugin, "1.0.0", Some(29597), None),
(active, simd_ffi, "1.0.0", Some(27731), None),
(active, start, "1.0.0", Some(29633), None),
(active, structural_match, "1.8.0", Some(31434), None),
(active, panic_runtime, "1.10.0", Some(32837), None),
(active, needs_panic_runtime, "1.10.0", Some(32837), None),
// Features specific to OIBIT (auto traits)
(active, optin_builtin_traits, "1.0.0", Some(13231), None),
// Allows `#[staged_api]`.
//
// rustc internal
(active, staged_api, "1.0.0", None, None), (active, staged_api, "1.0.0", None, None),
// Allows `#![no_core]`. // Allows using `#[allow_internal_unstable]`. This is an
(active, no_core, "1.3.0", Some(29639), None), // attribute on `macro_rules!` and can't use the attribute handling
// below (it has to be checked before expansion possibly makes
// macros disappear).
(active, allow_internal_unstable, "1.0.0", None, None),
// Allows the use of `box` in patterns (RFC 469). // Allows using `#[allow_internal_unsafe]`. This is an
// attribute on `macro_rules!` and can't use the attribute handling
// below (it has to be checked before expansion possibly makes
// macros disappear).
(active, allow_internal_unsafe, "1.0.0", None, None),
// Allows using the macros:
// + `__diagnostic_used`
// + `__register_diagnostic`
// +`__build_diagnostic_array`
(active, rustc_diagnostic_macros, "1.0.0", None, None),
// Allows using `#[rustc_const_unstable(feature = "foo", ..)]` which
// lets a function to be `const` when opted into with `#![feature(foo)]`.
(active, rustc_const_unstable, "1.0.0", None, None),
// no tracking issue END
// Allows using `#[link_name="llvm.*"]`.
(active, link_llvm_intrinsics, "1.0.0", Some(29602), None),
// Allows using `rustc_*` attributes (RFC 572).
(active, rustc_attrs, "1.0.0", Some(29642), None),
// Allows using `#[on_unimplemented(..)]` on traits.
(active, on_unimplemented, "1.0.0", Some(29628), None),
// Allows using the `box $expr` syntax.
(active, box_syntax, "1.0.0", Some(49733), None),
// Allows using `#[main]` to replace the entrypoint `#[lang = "start"]` calls.
(active, main, "1.0.0", Some(29634), None),
// Allows using `#[start]` on a function indicating that it is the program entrypoint.
(active, start, "1.0.0", Some(29633), None),
// Allows using the `#[fundamental]` attribute.
(active, fundamental, "1.0.0", Some(29635), None),
// Allows using the `rust-call` ABI.
(active, unboxed_closures, "1.0.0", Some(29625), None),
// Allows using the `#[linkage = ".."]` attribute.
(active, linkage, "1.0.0", Some(29603), None),
// Allows features specific to OIBIT (auto traits).
(active, optin_builtin_traits, "1.0.0", Some(13231), None),
// Allows using `box` in patterns (RFC 469).
(active, box_patterns, "1.0.0", Some(29641), None), (active, box_patterns, "1.0.0", Some(29641), None),
// Allows the use of the `unsafe_destructor_blind_to_params` attribute (RFC 1238). // no tracking issue START
// Allows using `#[prelude_import]` on glob `use` items.
(active, prelude_import, "1.2.0", None, None),
// no tracking issue END
// Allows using `#[unsafe_destructor_blind_to_params]` (RFC 1238).
(active, dropck_parametricity, "1.3.0", Some(28498), None), (active, dropck_parametricity, "1.3.0", Some(28498), None),
// FIXME(Centril): Investigate whether this gate actually has any effect.
(active, needs_allocator, "1.4.0", Some(27389), None),
// no tracking issue START
// Allows using `#[omit_gdb_pretty_printer_section]`.
(active, omit_gdb_pretty_printer_section, "1.5.0", None, None),
// Allows using the `vectorcall` ABI.
(active, abi_vectorcall, "1.7.0", None, None),
// no tracking issue END
// Allows using the `may_dangle` attribute (RFC 1327). // Allows using the `may_dangle` attribute (RFC 1327).
(active, dropck_eyepatch, "1.10.0", Some(34761), None), (active, dropck_eyepatch, "1.10.0", Some(34761), None),
// Allows the use of custom attributes (RFC 572). // Allows using `#[structural_match]` which indicates that a type is structurally matchable.
(active, custom_attribute, "1.0.0", Some(29642), None), (active, structural_match, "1.8.0", Some(31434), None),
// Allows the use of `rustc_*` attributes (RFC 572). // Allows using the `#![panic_runtime]` attribute.
(active, rustc_attrs, "1.0.0", Some(29642), None), (active, panic_runtime, "1.10.0", Some(32837), None),
// Allows the use of non lexical lifetimes (RFC 2094). // Allows declaring with `#![needs_panic_runtime]` that a panic runtime is needed.
(active, nll, "1.0.0", Some(43234), None), (active, needs_panic_runtime, "1.10.0", Some(32837), None),
// Allows the use of `#[allow_internal_unstable]`. This is an // no tracking issue START
// attribute on `macro_rules!` and can't use the attribute handling
// below (it has to be checked before expansion possibly makes
// macros disappear).
//
// rustc internal
(active, allow_internal_unstable, "1.0.0", None, None),
// Allows the use of `#[allow_internal_unsafe]`. This is an // Allows identifying the `compiler_builtins` crate.
// attribute on `macro_rules!` and can't use the attribute handling
// below (it has to be checked before expansion possibly makes
// macros disappear).
//
// rustc internal
(active, allow_internal_unsafe, "1.0.0", None, None),
// Allows the use of slice patterns (issue #23121).
(active, slice_patterns, "1.0.0", Some(23121), None),
// Allows the definition of `const` functions with some advanced features.
(active, const_fn, "1.2.0", Some(57563), None),
// Allows accessing fields of unions inside `const` functions.
(active, const_fn_union, "1.27.0", Some(51909), None),
// Allows casting raw pointers to `usize` during const eval.
(active, const_raw_ptr_to_usize_cast, "1.27.0", Some(51910), None),
// Allows dereferencing raw pointers during const eval.
(active, const_raw_ptr_deref, "1.27.0", Some(51911), None),
// Allows reinterpretation of the bits of a value of one type as another type during const eval.
(active, const_transmute, "1.29.0", Some(53605), None),
// Allows comparing raw pointers during const eval.
(active, const_compare_raw_pointers, "1.27.0", Some(53020), None),
// Allows panicking during const eval (producing compile-time errors).
(active, const_panic, "1.30.0", Some(51999), None),
// Allows using `#[prelude_import]` on glob `use` items.
//
// rustc internal
(active, prelude_import, "1.2.0", None, None),
// Allows default type parameters to influence type inference.
(active, default_type_parameter_fallback, "1.3.0", Some(27336), None),
// Allows associated type defaults.
(active, associated_type_defaults, "1.2.0", Some(29661), None),
// Allows `repr(simd)` and importing the various simd intrinsics.
(active, repr_simd, "1.4.0", Some(27731), None),
// Allows `extern "platform-intrinsic" { ... }`.
(active, platform_intrinsics, "1.4.0", Some(27731), None),
// Allows `#[unwind(..)]`.
//
// Permits specifying whether a function should permit unwinding or abort on unwind.
(active, unwind_attributes, "1.4.0", Some(58760), None),
// Allows the use of `#[naked]` on functions.
(active, naked_functions, "1.9.0", Some(32408), None),
// Allows `#[no_debug]`.
(active, no_debug, "1.5.0", Some(29721), None),
// Allows `#[omit_gdb_pretty_printer_section]`.
//
// rustc internal
(active, omit_gdb_pretty_printer_section, "1.5.0", None, None),
// Allows attributes on expressions and non-item statements.
(active, stmt_expr_attributes, "1.6.0", Some(15701), None),
// Allows the use of type ascription in expressions.
(active, type_ascription, "1.6.0", Some(23416), None),
// Allows `cfg(target_thread_local)`.
(active, cfg_target_thread_local, "1.7.0", Some(29594), None),
// rustc internal
(active, abi_vectorcall, "1.7.0", None, None),
// Allows `X..Y` patterns.
(active, exclusive_range_pattern, "1.11.0", Some(37854), None),
// impl specialization (RFC 1210)
(active, specialization, "1.7.0", Some(31844), None),
// Allows `cfg(target_has_atomic = "...")`.
(active, cfg_target_has_atomic, "1.9.0", Some(32976), None),
// The `!` type. Does not imply 'exhaustive_patterns' (below) any more.
(active, never_type, "1.13.0", Some(35121), None),
// Allows exhaustive pattern matching on types that contain uninhabited types.
(active, exhaustive_patterns, "1.13.0", Some(51085), None),
// Allows untagged unions `union U { ... }`.
(active, untagged_unions, "1.13.0", Some(32836), None),
// Used to identify the `compiler_builtins` crate.
//
// rustc internal.
(active, compiler_builtins, "1.13.0", None, None), (active, compiler_builtins, "1.13.0", None, None),
// Allows `#[link(..., cfg(..))]`. // Allows using the `unadjusted` ABI; perma-unstable.
(active, link_cfg, "1.14.0", Some(37406), None),
// Allows `extern "ptx-*" fn()`.
(active, abi_ptx, "1.15.0", Some(38788), None),
// The `repr(i128)` annotation for enums.
(active, repr128, "1.16.0", Some(35118), None),
// Allows the use of `#[ffi_returns_twice]` on foreign functions.
(active, ffi_returns_twice, "1.34.0", Some(58314), None),
// The `unadjusted` ABI; perma-unstable.
//
// rustc internal
(active, abi_unadjusted, "1.16.0", None, None), (active, abi_unadjusted, "1.16.0", None, None),
// Declarative macros 2.0 (`macro`). // Allows identifying crates that contain sanitizer runtimes.
(active, decl_macro, "1.17.0", Some(39412), None),
// Allows `#[link(kind="static-nobundle"...)]`.
(active, static_nobundle, "1.16.0", Some(37403), None),
// Allows `extern "msp430-interrupt" fn()`.
(active, abi_msp430_interrupt, "1.16.0", Some(38487), None),
// Used to identify crates that contain sanitizer runtimes.
//
// rustc internal
(active, sanitizer_runtime, "1.17.0", None, None), (active, sanitizer_runtime, "1.17.0", None, None),
// Used to identify crates that contain the profiler runtime. // Used to identify crates that contain the profiler runtime.
//
// rustc internal
(active, profiler_runtime, "1.18.0", None, None), (active, profiler_runtime, "1.18.0", None, None),
// Allows `extern "x86-interrupt" fn()`. // Allows using the `thiscall` ABI.
(active, abi_x86_interrupt, "1.17.0", Some(40180), None),
// Allows the `try {...}` expression.
(active, try_blocks, "1.29.0", Some(31436), None),
// Allows module-level inline assembly by way of `global_asm!()`.
(active, global_asm, "1.18.0", Some(35119), None),
// Allows overlapping impls of marker traits.
(active, overlapping_marker_traits, "1.18.0", Some(29864), None),
// Trait attribute to allow overlapping impls.
(active, marker_trait_attr, "1.30.0", Some(29864), None),
// rustc internal
(active, abi_thiscall, "1.19.0", None, None), (active, abi_thiscall, "1.19.0", None, None),
// Allows a test to fail without failing the whole suite. // Allows using `#![needs_allocator]`, an implementation detail of `#[global_allocator]`.
(active, allow_fail, "1.19.0", Some(46488), None),
// Allows unsized tuple coercion.
(active, unsized_tuple_coercion, "1.20.0", Some(42877), None),
// Generators
(active, generators, "1.21.0", Some(43122), None),
// Trait aliases
(active, trait_alias, "1.24.0", Some(41517), None),
// rustc internal
(active, allocator_internals, "1.20.0", None, None), (active, allocator_internals, "1.20.0", None, None),
// `#[doc(cfg(...))]` // Allows using the `format_args_nl` macro.
(active, doc_cfg, "1.21.0", Some(43781), None), (active, format_args_nl, "1.29.0", None, None),
// `#[doc(masked)]`
(active, doc_masked, "1.21.0", Some(44027), None),
// `#[doc(spotlight)]`
(active, doc_spotlight, "1.22.0", Some(45040), None),
// `#[doc(include = "some-file")]`
(active, external_doc, "1.22.0", Some(44732), None),
// Future-proofing enums/structs with `#[non_exhaustive]` attribute (RFC 2008). // no tracking issue END
(active, non_exhaustive, "1.22.0", Some(44109), None),
// Adds `crate` as visibility modifier, synonymous with `pub(crate)`. // Added for testing E0705; perma-unstable.
(active, crate_visibility_modifier, "1.23.0", Some(53120), None), (active, test_2018_feature, "1.31.0", Some(0), Some(Edition::Edition2018)),
// extern types // -------------------------------------------------------------------------
(active, extern_types, "1.23.0", Some(43467), None), // Actual feature gates (target features).
// -------------------------------------------------------------------------
// Allows trait methods with arbitrary self types. // FIXME: Document these and merge with the list below.
(active, arbitrary_self_types, "1.23.0", Some(44874), None),
// In-band lifetime bindings (e.g., `fn foo(x: &'a u8) -> &'a u8`). // Unstable `#[target_feature]` directives.
(active, in_band_lifetimes, "1.23.0", Some(44524), None),
// Generic associated types (RFC 1598)
(active, generic_associated_types, "1.23.0", Some(44265), None),
// Infer static outlives requirements (RFC 2093).
(active, infer_static_outlives_requirements, "1.26.0", Some(54185), None),
// Allows macro invocations in `extern {}` blocks.
(active, macros_in_extern, "1.27.0", Some(49476), None),
// `existential type`
(active, existential_type, "1.28.0", Some(34511), None),
// unstable `#[target_feature]` directives
(active, arm_target_feature, "1.27.0", Some(44839), None), (active, arm_target_feature, "1.27.0", Some(44839), None),
(active, aarch64_target_feature, "1.27.0", Some(44839), None), (active, aarch64_target_feature, "1.27.0", Some(44839), None),
(active, hexagon_target_feature, "1.27.0", Some(44839), None), (active, hexagon_target_feature, "1.27.0", Some(44839), None),
@ -405,48 +274,242 @@ declare_features! (
(active, rtm_target_feature, "1.35.0", Some(44839), None), (active, rtm_target_feature, "1.35.0", Some(44839), None),
(active, f16c_target_feature, "1.36.0", Some(44839), None), (active, f16c_target_feature, "1.36.0", Some(44839), None),
// Allows macro invocations on modules expressions and statements and // -------------------------------------------------------------------------
// procedural macros to expand to non-items. // Actual feature gates.
(active, proc_macro_hygiene, "1.30.0", Some(54727), None), // -------------------------------------------------------------------------
// `#[doc(alias = "...")]` // Allows using `asm!` macro with which inline assembly can be embedded.
(active, asm, "1.0.0", Some(29722), None),
// Allows using the `concat_idents!` macro with which identifiers can be concatenated.
(active, concat_idents, "1.0.0", Some(29599), None),
// Allows using the `#[link_args]` attribute.
(active, link_args, "1.0.0", Some(29596), None),
// Allows defining identifiers beyond ASCII.
(active, non_ascii_idents, "1.0.0", Some(55467), None),
// Allows using `#[plugin_registrar]` on functions.
(active, plugin_registrar, "1.0.0", Some(29597), None),
// Allows using `#![plugin(myplugin)]`.
(active, plugin, "1.0.0", Some(29597), None),
// Allows using `#[thread_local]` on `static` items.
(active, thread_local, "1.0.0", Some(29594), None),
// Allows using the `log_syntax!` macro.
(active, log_syntax, "1.0.0", Some(29598), None),
// Allows using the `trace_macros!` macro.
(active, trace_macros, "1.0.0", Some(29598), None),
// Allows the use of SIMD types in functions declared in `extern` blocks.
(active, simd_ffi, "1.0.0", Some(27731), None),
// Allows using custom attributes (RFC 572).
(active, custom_attribute, "1.0.0", Some(29642), None),
// Allows using non lexical lifetimes (RFC 2094).
(active, nll, "1.0.0", Some(43234), None),
// Allows using slice patterns.
(active, slice_patterns, "1.0.0", Some(23121), None),
// Allows the definition of `const` functions with some advanced features.
(active, const_fn, "1.2.0", Some(57563), None),
// Allows associated type defaults.
(active, associated_type_defaults, "1.2.0", Some(29661), None),
// Allows `#![no_core]`.
(active, no_core, "1.3.0", Some(29639), None),
// Allows default type parameters to influence type inference.
(active, default_type_parameter_fallback, "1.3.0", Some(27336), None),
// Allows `repr(simd)` and importing the various simd intrinsics.
(active, repr_simd, "1.4.0", Some(27731), None),
// Allows `extern "platform-intrinsic" { ... }`.
(active, platform_intrinsics, "1.4.0", Some(27731), None),
// Allows `#[unwind(..)]`.
//
// Permits specifying whether a function should permit unwinding or abort on unwind.
(active, unwind_attributes, "1.4.0", Some(58760), None),
// Allows using `#[naked]` on functions.
(active, naked_functions, "1.9.0", Some(32408), None),
// Allows `#[no_debug]`.
(active, no_debug, "1.5.0", Some(29721), None),
// Allows attributes on expressions and non-item statements.
(active, stmt_expr_attributes, "1.6.0", Some(15701), None),
// Allows the use of type ascription in expressions.
(active, type_ascription, "1.6.0", Some(23416), None),
// Allows `cfg(target_thread_local)`.
(active, cfg_target_thread_local, "1.7.0", Some(29594), None),
// Allows specialization of implementations (RFC 1210).
(active, specialization, "1.7.0", Some(31844), None),
// Allows `cfg(target_has_atomic = "...")`.
(active, cfg_target_has_atomic, "1.9.0", Some(32976), None),
// Allows `X..Y` patterns.
(active, exclusive_range_pattern, "1.11.0", Some(37854), None),
// Allows the `!` type. Does not imply 'exhaustive_patterns' (below) any more.
(active, never_type, "1.13.0", Some(35121), None),
// Allows exhaustive pattern matching on types that contain uninhabited types.
(active, exhaustive_patterns, "1.13.0", Some(51085), None),
// Allows untagged unions `union U { ... }`.
(active, untagged_unions, "1.13.0", Some(32836), None),
// Allows `#[link(..., cfg(..))]`.
(active, link_cfg, "1.14.0", Some(37406), None),
// Allows `extern "ptx-*" fn()`.
(active, abi_ptx, "1.15.0", Some(38788), None),
// Allows the `#[repr(i128)]` attribute for enums.
(active, repr128, "1.16.0", Some(35118), None),
// Allows `#[link(kind="static-nobundle"...)]`.
(active, static_nobundle, "1.16.0", Some(37403), None),
// Allows `extern "msp430-interrupt" fn()`.
(active, abi_msp430_interrupt, "1.16.0", Some(38487), None),
// Allows declarative macros 2.0 (`macro`).
(active, decl_macro, "1.17.0", Some(39412), None),
// Allows `extern "x86-interrupt" fn()`.
(active, abi_x86_interrupt, "1.17.0", Some(40180), None),
// Allows module-level inline assembly by way of `global_asm!()`.
(active, global_asm, "1.18.0", Some(35119), None),
// Allows overlapping impls of marker traits.
(active, overlapping_marker_traits, "1.18.0", Some(29864), None),
// Allows a test to fail without failing the whole suite.
(active, allow_fail, "1.19.0", Some(46488), None),
// Allows unsized tuple coercion.
(active, unsized_tuple_coercion, "1.20.0", Some(42877), None),
// Allows defining generators.
(active, generators, "1.21.0", Some(43122), None),
// Allows `#[doc(cfg(...))]`.
(active, doc_cfg, "1.21.0", Some(43781), None),
// Allows `#[doc(masked)]`.
(active, doc_masked, "1.21.0", Some(44027), None),
// Allows `#[doc(spotlight)]`.
(active, doc_spotlight, "1.22.0", Some(45040), None),
// Allows `#[doc(include = "some-file")]`.
(active, external_doc, "1.22.0", Some(44732), None),
// Allows future-proofing enums/structs with the `#[non_exhaustive]` attribute (RFC 2008).
(active, non_exhaustive, "1.22.0", Some(44109), None),
// Allows using `crate` as visibility modifier, synonymous with `pub(crate)`.
(active, crate_visibility_modifier, "1.23.0", Some(53120), None),
// Allows defining `extern type`s.
(active, extern_types, "1.23.0", Some(43467), None),
// Allows trait methods with arbitrary self types.
(active, arbitrary_self_types, "1.23.0", Some(44874), None),
// Allows in-band quantification of lifetime bindings (e.g., `fn foo(x: &'a u8) -> &'a u8`).
(active, in_band_lifetimes, "1.23.0", Some(44524), None),
// Allows associated types to be generic, e.g., `type Foo<T>;` (RFC 1598).
(active, generic_associated_types, "1.23.0", Some(44265), None),
// Allows defining `trait X = A + B;` alias items.
(active, trait_alias, "1.24.0", Some(41517), None),
// Allows infering `'static` outlives requirements (RFC 2093).
(active, infer_static_outlives_requirements, "1.26.0", Some(54185), None),
// Allows macro invocations in `extern {}` blocks.
(active, macros_in_extern, "1.27.0", Some(49476), None),
// Allows accessing fields of unions inside `const` functions.
(active, const_fn_union, "1.27.0", Some(51909), None),
// Allows casting raw pointers to `usize` during const eval.
(active, const_raw_ptr_to_usize_cast, "1.27.0", Some(51910), None),
// Allows dereferencing raw pointers during const eval.
(active, const_raw_ptr_deref, "1.27.0", Some(51911), None),
// Allows comparing raw pointers during const eval.
(active, const_compare_raw_pointers, "1.27.0", Some(53020), None),
// Allows `#[doc(alias = "...")]`.
(active, doc_alias, "1.27.0", Some(50146), None), (active, doc_alias, "1.27.0", Some(50146), None),
// inconsistent bounds in where clauses // Allows defining `existential type`s.
(active, existential_type, "1.28.0", Some(34511), None),
// Allows inconsistent bounds in where clauses.
(active, trivial_bounds, "1.28.0", Some(48214), None), (active, trivial_bounds, "1.28.0", Some(48214), None),
// `'a: { break 'a; }` // Allows `'a: { break 'a; }`.
(active, label_break_value, "1.28.0", Some(48594), None), (active, label_break_value, "1.28.0", Some(48594), None),
// Exhaustive pattern matching on `usize` and `isize`. // Allows using `#[doc(keyword = "...")]`.
(active, precise_pointer_size_matching, "1.32.0", Some(56354), None),
// `#[doc(keyword = "...")]`
(active, doc_keyword, "1.28.0", Some(51315), None), (active, doc_keyword, "1.28.0", Some(51315), None),
// Allows async and await syntax. // Allows async and await syntax.
(active, async_await, "1.28.0", Some(50547), None), (active, async_await, "1.28.0", Some(50547), None),
// `#[alloc_error_handler]` // Allows reinterpretation of the bits of a value of one type as another type during const eval.
(active, const_transmute, "1.29.0", Some(53605), None),
// Allows using `try {...}` expressions.
(active, try_blocks, "1.29.0", Some(31436), None),
// Allows defining an `#[alloc_error_handler]`.
(active, alloc_error_handler, "1.29.0", Some(51540), None), (active, alloc_error_handler, "1.29.0", Some(51540), None),
// Allows using the `amdgpu-kernel` ABI.
(active, abi_amdgpu_kernel, "1.29.0", Some(51575), None), (active, abi_amdgpu_kernel, "1.29.0", Some(51575), None),
// Added for testing E0705; perma-unstable. // Allows panicking during const eval (producing compile-time errors).
(active, test_2018_feature, "1.31.0", Some(0), Some(Edition::Edition2018)), (active, const_panic, "1.30.0", Some(51999), None),
// Allows `#[marker]` on certain traits allowing overlapping implementations.
(active, marker_trait_attr, "1.30.0", Some(29864), None),
// Allows macro invocations on modules expressions and statements and
// procedural macros to expand to non-items.
(active, proc_macro_hygiene, "1.30.0", Some(54727), None),
// Allows unsized rvalues at arguments and parameters. // Allows unsized rvalues at arguments and parameters.
(active, unsized_locals, "1.30.0", Some(48055), None), (active, unsized_locals, "1.30.0", Some(48055), None),
// `#![test_runner]` // Allows custom test frameworks with `#![test_runner]` and `#[test_case]`.
// `#[test_case]`
(active, custom_test_frameworks, "1.30.0", Some(50297), None), (active, custom_test_frameworks, "1.30.0", Some(50297), None),
// non-builtin attributes in inner attribute position // Allows non-builtin attributes in inner attribute position.
(active, custom_inner_attributes, "1.30.0", Some(54726), None), (active, custom_inner_attributes, "1.30.0", Some(54726), None),
// Allow mixing of bind-by-move in patterns and references to // Allows mixing bind-by-move in patterns and references to those identifiers in guards.
// those identifiers in guards.
(active, bind_by_move_pattern_guards, "1.30.0", Some(15287), None), (active, bind_by_move_pattern_guards, "1.30.0", Some(15287), None),
// Allows `impl Trait` in bindings (`let`, `const`, `static`). // Allows `impl Trait` in bindings (`let`, `const`, `static`).
@ -455,25 +518,32 @@ declare_features! (
// Allows `const _: TYPE = VALUE`. // Allows `const _: TYPE = VALUE`.
(active, underscore_const_names, "1.31.0", Some(54912), None), (active, underscore_const_names, "1.31.0", Some(54912), None),
// Adds `reason` and `expect` lint attributes. // Allows using `reason` in lint attributes and the `#[expect(lint)]` lint check.
(active, lint_reasons, "1.31.0", Some(54503), None), (active, lint_reasons, "1.31.0", Some(54503), None),
// Allows paths to enum variants on type aliases. // Allows paths to enum variants on type aliases.
(active, type_alias_enum_variants, "1.31.0", Some(49683), None), (active, type_alias_enum_variants, "1.31.0", Some(49683), None),
// Re-Rebalance coherence // Allows exhaustive integer pattern matching on `usize` and `isize`.
(active, precise_pointer_size_matching, "1.32.0", Some(56354), None),
// Allows relaxing the coherence rules such that
// `impl<T> ForeignTrait<LocalType> for ForeignType<T> is permitted.
(active, re_rebalance_coherence, "1.32.0", Some(55437), None), (active, re_rebalance_coherence, "1.32.0", Some(55437), None),
// Const generic types. // Allows using `#[ffi_returns_twice]` on foreign functions.
(active, ffi_returns_twice, "1.34.0", Some(58314), None),
// Allows const generic types (e.g. `struct Foo<const N: usize>(...);`).
(active, const_generics, "1.34.0", Some(44580), None), (active, const_generics, "1.34.0", Some(44580), None),
// #[optimize(X)] // Allows using `#[optimize(X)]`.
(active, optimize_attribute, "1.34.0", Some(54882), None), (active, optimize_attribute, "1.34.0", Some(54882), None),
// #[repr(align(X))] on enums // Allows using `#[repr(align(X))]` on enums.
(active, repr_align_enum, "1.34.0", Some(57996), None), (active, repr_align_enum, "1.34.0", Some(57996), None),
// Allows the use of C-variadics // Allows using C-variadics.
(active, c_variadic, "1.34.0", Some(44930), None), (active, c_variadic, "1.34.0", Some(44930), None),
); );
@ -499,7 +569,6 @@ declare_features! (
(removed, visible_private_types, "1.0.0", None, None, None), (removed, visible_private_types, "1.0.0", None, None, None),
(removed, unsafe_no_drop_flag, "1.0.0", None, None, None), (removed, unsafe_no_drop_flag, "1.0.0", None, None, None),
// Allows using items which are missing stability attributes // Allows using items which are missing stability attributes
// rustc internal
(removed, unmarked_api, "1.0.0", None, None, None), (removed, unmarked_api, "1.0.0", None, None, None),
(removed, pushpop_unsafe, "1.2.0", None, None, None), (removed, pushpop_unsafe, "1.2.0", None, None, None),
(removed, allocator, "1.0.0", None, None, None), (removed, allocator, "1.0.0", None, None, None),

26
src/tools/tidy/src/features.rs
View file

@ -173,18 +173,25 @@ pub fn collect_lang_features(base_src_path: &Path, bad: &mut bool) -> Features {
let contents = t!(fs::read_to_string(base_src_path.join("libsyntax/feature_gate.rs"))); let contents = t!(fs::read_to_string(base_src_path.join("libsyntax/feature_gate.rs")));
// We allow rustc-internal features to omit a tracking issue. // We allow rustc-internal features to omit a tracking issue.
// These features must be marked with a `// rustc internal` in its own group. // To make tidy accept omitting a tracking issue, group the list of features
let mut next_feature_is_rustc_internal = false; // without one inside `// no tracking issue START` and `// no tracking issue END`.
let mut next_feature_omits_tracking_issue = false;
contents.lines().zip(1..) contents.lines().zip(1..)
.filter_map(|(line, line_number)| { .filter_map(|(line, line_number)| {
let line = line.trim(); let line = line.trim();
if line.starts_with("// rustc internal") {
next_feature_is_rustc_internal = true; // Within START and END, the tracking issue can be omitted.
return None; match line {
} else if line.is_empty() { "// no tracking issue START" => {
next_feature_is_rustc_internal = false; next_feature_omits_tracking_issue = true;
return None; return None;
}
"// no tracking issue END" => {
next_feature_omits_tracking_issue = false;
return None;
}
_ => {}
} }
let mut parts = line.split(','); let mut parts = line.split(',');
@ -198,7 +205,7 @@ pub fn collect_lang_features(base_src_path: &Path, bad: &mut bool) -> Features {
let since = parts.next().unwrap().trim().trim_matches('"'); let since = parts.next().unwrap().trim().trim_matches('"');
let issue_str = parts.next().unwrap().trim(); let issue_str = parts.next().unwrap().trim();
let tracking_issue = if issue_str.starts_with("None") { let tracking_issue = if issue_str.starts_with("None") {
if level == Status::Unstable && !next_feature_is_rustc_internal { if level == Status::Unstable && !next_feature_omits_tracking_issue {
*bad = true; *bad = true;
tidy_error!( tidy_error!(
bad, bad,
@ -209,7 +216,6 @@ pub fn collect_lang_features(base_src_path: &Path, bad: &mut bool) -> Features {
} }
None None
} else { } else {
next_feature_is_rustc_internal = false;
let s = issue_str.split('(').nth(1).unwrap().split(')').nth(0).unwrap(); let s = issue_str.split('(').nth(1).unwrap().split(')').nth(0).unwrap();
Some(s.parse().unwrap()) Some(s.parse().unwrap())
}; };