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Commit | Line | Data |
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e1599b0c XL |
1 | //! List of the removed feature gates. |
2 | ||
1b1a35ee | 3 | use super::{to_nonzero, Feature, State}; |
dfeec247 | 4 | use rustc_span::symbol::sym; |
e1599b0c XL |
5 | |
6 | macro_rules! declare_features { | |
7 | ($( | |
8 | $(#[doc = $doc:tt])* (removed, $feature:ident, $ver:expr, $issue:expr, None, $reason:expr), | |
9 | )+) => { | |
10 | /// Represents unstable features which have since been removed (it was once Active) | |
11 | pub const REMOVED_FEATURES: &[Feature] = &[ | |
12 | $( | |
13 | Feature { | |
14 | state: State::Removed { reason: $reason }, | |
15 | name: sym::$feature, | |
16 | since: $ver, | |
1b1a35ee | 17 | issue: to_nonzero($issue), |
e1599b0c | 18 | edition: None, |
e1599b0c XL |
19 | } |
20 | ),+ | |
21 | ]; | |
22 | }; | |
23 | ||
24 | ($( | |
25 | $(#[doc = $doc:tt])* (stable_removed, $feature:ident, $ver:expr, $issue:expr, None), | |
26 | )+) => { | |
27 | /// Represents stable features which have since been removed (it was once Accepted) | |
28 | pub const STABLE_REMOVED_FEATURES: &[Feature] = &[ | |
29 | $( | |
30 | Feature { | |
31 | state: State::Stabilized { reason: None }, | |
32 | name: sym::$feature, | |
33 | since: $ver, | |
1b1a35ee | 34 | issue: to_nonzero($issue), |
e1599b0c | 35 | edition: None, |
e1599b0c XL |
36 | } |
37 | ),+ | |
38 | ]; | |
39 | }; | |
40 | } | |
41 | ||
dfeec247 | 42 | #[rustfmt::skip] |
e1599b0c XL |
43 | declare_features! ( |
44 | // ------------------------------------------------------------------------- | |
45 | // feature-group-start: removed features | |
46 | // ------------------------------------------------------------------------- | |
47 | ||
e1599b0c XL |
48 | (removed, advanced_slice_patterns, "1.0.0", Some(62254), None, |
49 | Some("merged into `#![feature(slice_patterns)]`")), | |
3c0e092e | 50 | (removed, allocator, "1.0.0", None, None, None), |
5099ac24 FG |
51 | /// Allows a test to fail without failing the whole suite. |
52 | (removed, allow_fail, "1.19.0", Some(46488), None, Some("removed due to no clear use cases")), | |
3c0e092e XL |
53 | (removed, await_macro, "1.38.0", Some(50547), None, |
54 | Some("subsumed by `.await` syntax")), | |
55 | /// Allows comparing raw pointers during const eval. | |
56 | (removed, const_compare_raw_pointers, "1.46.0", Some(53020), None, | |
57 | Some("cannot be allowed in const eval in any meaningful way")), | |
58 | /// Allows non-trivial generic constants which have to be manually propagated upwards. | |
59 | (removed, const_evaluatable_checked, "1.48.0", Some(76560), None, Some("renamed to `generic_const_exprs`")), | |
60 | /// Allows the definition of `const` functions with some advanced features. | |
61 | (removed, const_fn, "1.54.0", Some(57563), None, | |
62 | Some("split into finer-grained feature gates")), | |
63 | /// Allows const generic types (e.g. `struct Foo<const N: usize>(...);`). | |
64 | (removed, const_generics, "1.34.0", Some(44580), None, | |
65 | Some("removed in favor of `#![feature(adt_const_params)]` and `#![feature(generic_const_exprs)]`")), | |
66 | /// Allows `[x; N]` where `x` is a constant (RFC 2203). | |
67 | (removed, const_in_array_repeat_expressions, "1.37.0", Some(49147), None, | |
68 | Some("removed due to causing promotable bugs")), | |
69 | /// Allows casting raw pointers to `usize` during const eval. | |
70 | (removed, const_raw_ptr_to_usize_cast, "1.55.0", Some(51910), None, | |
71 | Some("at compile-time, pointers do not have an integer value, so these casts cannot be properly supported")), | |
72 | /// Allows `T: ?const Trait` syntax in bounds. | |
73 | (removed, const_trait_bound_opt_out, "1.42.0", Some(67794), None, | |
74 | Some("Removed in favor of `~const` bound in #![feature(const_trait_impl)]")), | |
923072b8 FG |
75 | /// Allows using `crate` as visibility modifier, synonymous with `pub(crate)`. |
76 | (removed, crate_visibility_modifier, "1.63.0", Some(53120), None, Some("removed in favor of `pub(crate)`")), | |
60c5eb7d XL |
77 | /// Allows using custom attributes (RFC 572). |
78 | (removed, custom_attribute, "1.0.0", Some(29642), None, | |
79 | Some("removed in favor of `#![register_tool]` and `#![register_attr]`")), | |
3c0e092e XL |
80 | /// Allows the use of `#[derive(Anything)]` as sugar for `#[derive_Anything]`. |
81 | (removed, custom_derive, "1.32.0", Some(29644), None, | |
82 | Some("subsumed by `#[proc_macro_derive]`")), | |
83 | /// Allows using `#[doc(keyword = "...")]`. | |
84 | (removed, doc_keyword, "1.28.0", Some(51315), None, | |
85 | Some("merged into `#![feature(rustdoc_internals)]`")), | |
86 | /// Allows using `doc(primitive)` without a future-incompat warning. | |
87 | (removed, doc_primitive, "1.56.0", Some(88070), None, | |
88 | Some("merged into `#![feature(rustdoc_internals)]`")), | |
cdc7bbd5 XL |
89 | /// Allows `#[doc(spotlight)]`. |
90 | /// The attribute was renamed to `#[doc(notable_trait)]` | |
91 | /// and the feature to `doc_notable_trait`. | |
92 | (removed, doc_spotlight, "1.22.0", Some(45040), None, | |
93 | Some("renamed to `doc_notable_trait`")), | |
e1599b0c XL |
94 | /// Allows using `#[unsafe_destructor_blind_to_params]` (RFC 1238). |
95 | (removed, dropck_parametricity, "1.38.0", Some(28498), None, None), | |
e1599b0c XL |
96 | /// Allows defining `existential type`s. |
97 | (removed, existential_type, "1.38.0", Some(63063), None, | |
94222f64 | 98 | Some("removed in favor of `#![feature(type_alias_impl_trait)]`")), |
3c0e092e XL |
99 | /// Paths of the form: `extern::foo::bar` |
100 | (removed, extern_in_paths, "1.33.0", Some(55600), None, | |
101 | Some("subsumed by `::foo::bar` paths")), | |
102 | /// Allows `#[doc(include = "some-file")]`. | |
103 | (removed, external_doc, "1.54.0", Some(44732), None, | |
104 | Some("use #[doc = include_str!(\"filename\")] instead, which handles macro invocations")), | |
105 | /// Allows `impl Trait` in bindings (`let`, `const`, `static`). | |
106 | (removed, impl_trait_in_bindings, "1.55.0", Some(63065), None, | |
107 | Some("the implementation was not maintainable, the feature may get reintroduced once the current refactorings are done")), | |
108 | (removed, import_shadowing, "1.0.0", None, None, None), | |
5e7ed085 FG |
109 | /// Allows in-band quantification of lifetime bindings (e.g., `fn foo(x: &'a u8) -> &'a u8`). |
110 | (removed, in_band_lifetimes, "1.23.0", Some(44524), None, | |
111 | Some("removed due to unsolved ergonomic questions and added lifetime resolution complexity")), | |
923072b8 FG |
112 | /// Allows inferring `'static` outlives requirements (RFC 2093). |
113 | (removed, infer_static_outlives_requirements, "1.63.0", Some(54185), None, | |
114 | Some("removed as it caused some confusion and discussion was inactive for years")), | |
94222f64 XL |
115 | /// Lazily evaluate constants. This allows constants to depend on type parameters. |
116 | (removed, lazy_normalization_consts, "1.46.0", Some(72219), None, Some("superseded by `generic_const_exprs`")), | |
cdc7bbd5 XL |
117 | /// Allows using the `#[link_args]` attribute. |
118 | (removed, link_args, "1.53.0", Some(29596), None, | |
119 | Some("removed in favor of using `-C link-arg=ARG` on command line, \ | |
120 | which is available from cargo build scripts with `cargo:rustc-link-arg` now")), | |
3c0e092e XL |
121 | (removed, macro_reexport, "1.0.0", Some(29638), None, |
122 | Some("subsumed by `pub use`")), | |
cdc7bbd5 XL |
123 | /// Allows using `#[main]` to replace the entrypoint `#[lang = "start"]` calls. |
124 | (removed, main, "1.53.0", Some(29634), None, None), | |
3c0e092e | 125 | (removed, managed_boxes, "1.0.0", None, None, None), |
94222f64 XL |
126 | /// Allows the use of type alias impl trait in function return positions |
127 | (removed, min_type_alias_impl_trait, "1.56.0", Some(63063), None, | |
128 | Some("removed in favor of full type_alias_impl_trait")), | |
3c0e092e XL |
129 | (removed, needs_allocator, "1.4.0", Some(27389), None, |
130 | Some("subsumed by `#![feature(allocator_internals)]`")), | |
131 | /// Allows use of unary negate on unsigned integers, e.g., -e for e: u8 | |
132 | (removed, negate_unsigned, "1.0.0", Some(29645), None, None), | |
133 | /// Allows `#[no_debug]`. | |
134 | (removed, no_debug, "1.43.0", Some(29721), None, Some("removed due to lack of demand")), | |
135 | /// Allows using `#[on_unimplemented(..)]` on traits. | |
136 | /// (Moved to `rustc_attrs`.) | |
137 | (removed, on_unimplemented, "1.40.0", None, None, None), | |
138 | /// A way to temporarily opt out of opt in copy. This will *never* be accepted. | |
139 | (removed, opt_out_copy, "1.0.0", None, None, None), | |
140 | /// Allows features specific to OIBIT (now called auto traits). | |
141 | /// Renamed to `auto_traits`. | |
142 | (removed, optin_builtin_traits, "1.0.0", Some(13231), None, | |
143 | Some("renamed to `auto_traits`")), | |
144 | /// Allows overlapping impls of marker traits. | |
145 | (removed, overlapping_marker_traits, "1.42.0", Some(29864), None, | |
146 | Some("removed in favor of `#![feature(marker_trait_attr)]`")), | |
147 | (removed, panic_implementation, "1.28.0", Some(44489), None, | |
148 | Some("subsumed by `#[panic_handler]`")), | |
149 | /// Allows using `#[plugin_registrar]` on functions. | |
150 | (removed, plugin_registrar, "1.54.0", Some(29597), None, | |
151 | Some("a __rustc_plugin_registrar symbol must now be defined instead")), | |
152 | (removed, proc_macro_expr, "1.27.0", Some(54727), None, | |
153 | Some("subsumed by `#![feature(proc_macro_hygiene)]`")), | |
154 | (removed, proc_macro_gen, "1.27.0", Some(54727), None, | |
155 | Some("subsumed by `#![feature(proc_macro_hygiene)]`")), | |
156 | (removed, proc_macro_mod, "1.27.0", Some(54727), None, | |
157 | Some("subsumed by `#![feature(proc_macro_hygiene)]`")), | |
158 | (removed, proc_macro_non_items, "1.27.0", Some(54727), None, | |
159 | Some("subsumed by `#![feature(proc_macro_hygiene)]`")), | |
160 | (removed, pub_macro_rules, "1.53.0", Some(78855), None, | |
161 | Some("removed due to being incomplete, in particular it does not work across crates")), | |
162 | (removed, pushpop_unsafe, "1.2.0", None, None, None), | |
163 | (removed, quad_precision_float, "1.0.0", None, None, None), | |
164 | (removed, quote, "1.33.0", Some(29601), None, None), | |
165 | (removed, reflect, "1.0.0", Some(27749), None, None), | |
f2b60f7d FG |
166 | /// Allows using the `#[register_attr]` attribute. |
167 | (removed, register_attr, "1.65.0", Some(66080), None, | |
168 | Some("removed in favor of `#![register_tool]`")), | |
3c0e092e XL |
169 | /// Allows using the macros: |
170 | /// + `__diagnostic_used` | |
171 | /// + `__register_diagnostic` | |
172 | /// +`__build_diagnostic_array` | |
173 | (removed, rustc_diagnostic_macros, "1.38.0", None, None, None), | |
174 | /// Allows identifying crates that contain sanitizer runtimes. | |
175 | (removed, sanitizer_runtime, "1.17.0", None, None, None), | |
176 | (removed, simd, "1.0.0", Some(27731), None, | |
177 | Some("removed in favor of `#[repr(simd)]`")), | |
923072b8 FG |
178 | /// Allows `#[link(kind = "static-nobundle", ...)]`. |
179 | (removed, static_nobundle, "1.16.0", Some(37403), None, | |
180 | Some(r#"subsumed by `#[link(kind = "static", modifiers = "-bundle", ...)]`"#)), | |
3c0e092e XL |
181 | (removed, struct_inherit, "1.0.0", None, None, None), |
182 | (removed, test_removed_feature, "1.0.0", None, None, None), | |
183 | /// Allows using items which are missing stability attributes | |
184 | (removed, unmarked_api, "1.0.0", None, None, None), | |
185 | (removed, unsafe_no_drop_flag, "1.0.0", None, None, None), | |
064997fb FG |
186 | /// Allows `union` fields that don't implement `Copy` as long as they don't have any drop glue. |
187 | (removed, untagged_unions, "1.13.0", Some(55149), None, | |
188 | Some("unions with `Copy` and `ManuallyDrop` fields are stable; there is no intent to stabilize more")), | |
94222f64 XL |
189 | /// Allows `#[unwind(..)]`. |
190 | /// | |
191 | /// Permits specifying whether a function should permit unwinding or abort on unwind. | |
192 | (removed, unwind_attributes, "1.56.0", Some(58760), None, Some("use the C-unwind ABI instead")), | |
3c0e092e XL |
193 | (removed, visible_private_types, "1.0.0", None, None, None), |
194 | // !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! | |
195 | // Features are listed in alphabetical order. Tidy will fail if you don't keep it this way. | |
196 | // !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! !!!! | |
94222f64 | 197 | |
e1599b0c XL |
198 | // ------------------------------------------------------------------------- |
199 | // feature-group-end: removed features | |
200 | // ------------------------------------------------------------------------- | |
201 | ); | |
202 | ||
dfeec247 | 203 | #[rustfmt::skip] |
e1599b0c XL |
204 | declare_features! ( |
205 | (stable_removed, no_stack_check, "1.0.0", None, None), | |
206 | ); |