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Rollup merge of #152749 - cyrgani:rustc-allow-const, r=jdonszelmann

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make `rustc_allow_const_fn_unstable` an actual `rustc_attrs` attribute

It is already named like one, but used to have its own feature gate, which this PR now removes in favor of just using `#![feature(rustc_attrs)]`.

Most of the diff is just the line number changes in `malformed-attrs.stderr`.
This commit is contained in:
Stuart Cook 2026-02-18 17:29:49 +11:00 • committed by GitHub
commit e53dd52e16
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GPG key ID: B5690EEEBB952194
11 changed files with 98 additions and 105 deletions
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2
compiler/rustc_feature/src/builtin_attrs.rs
View file

@ -1208,7 +1208,7 @@ pub static BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
rustc_intrinsic_const_stable_indirect, Normal,
template!(Word), WarnFollowing, EncodeCrossCrate::No, "this is an internal implementation detail",
),
gated!(
rustc_attr!(
rustc_allow_const_fn_unstable, Normal,
template!(Word, List: &["feat1, feat2, ..."]), DuplicatesOk, EncodeCrossCrate::No,
"rustc_allow_const_fn_unstable side-steps feature gating and stability checks"

4
compiler/rustc_feature/src/unstable.rs
View file

@ -287,10 +287,6 @@ declare_features! (
(internal, panic_runtime, "1.10.0", Some(32837)),
/// Allows using pattern types.
(internal, pattern_types, "1.79.0", Some(123646)),
/// Allows using `#[rustc_allow_const_fn_unstable]`.
/// This is an attribute on `const fn` for the same
/// purpose as `#[allow_internal_unstable]`.
(internal, rustc_allow_const_fn_unstable, "1.49.0", Some(69399)),
/// Allows using compiler's own crates.
(unstable, rustc_private, "1.0.0", Some(27812)),
/// Allows using internal rustdoc features like `doc(keyword)`.

1
library/alloc/src/lib.rs
View file

@ -182,7 +182,6 @@
#![feature(negative_impls)]
#![feature(never_type)]
#![feature(optimize_attribute)]
#![feature(rustc_allow_const_fn_unstable)]
#![feature(rustc_attrs)]
#![feature(slice_internals)]
#![feature(staged_api)]

1
library/core/src/lib.rs
View file

@ -159,7 +159,6 @@
#![feature(pattern_types)]
#![feature(prelude_import)]
#![feature(repr_simd)]
#![feature(rustc_allow_const_fn_unstable)]
#![feature(rustc_attrs)]
#![feature(rustdoc_internals)]
#![feature(simd_ffi)]

2
tests/codegen-llvm/intrinsics/likely_assert.rs
View file

@ -1,5 +1,5 @@
//@ compile-flags: -Copt-level=3
#![feature(panic_internals, const_eval_select, rustc_allow_const_fn_unstable, core_intrinsics)]
#![feature(panic_internals, const_eval_select, rustc_attrs, core_intrinsics)]
#![crate_type = "lib"]
// check that assert! and const_assert! emit branch weights

1
tests/ui/attributes/malformed-attrs.rs
View file

@ -2,7 +2,6 @@
// We enable a bunch of features to not get feature-gate errs in this test.
#![deny(invalid_doc_attributes)]
#![feature(rustc_attrs)]
#![feature(rustc_allow_const_fn_unstable)]
#![feature(allow_internal_unstable)]
// FIXME(#82232, #143834): temporarily renamed to mitigate `#[align]` nameres ambiguity
#![feature(fn_align)]

178
tests/ui/attributes/malformed-attrs.stderr
View file

@ -1,5 +1,5 @@
error[E0539]: malformed `cfg` attribute input
--> $DIR/malformed-attrs.rs:107:1
--> $DIR/malformed-attrs.rs:106:1
|
LL | #[cfg]
| ^^^^^^
@ -10,7 +10,7 @@ LL | #[cfg]
= note: for more information, visit <https://doc.rust-lang.org/reference/conditional-compilation.html#the-cfg-attribute>
error[E0539]: malformed `cfg_attr` attribute input
--> $DIR/malformed-attrs.rs:109:1
--> $DIR/malformed-attrs.rs:108:1
|
LL | #[cfg_attr]
| ^^^^^^^^^^^
@ -21,13 +21,13 @@ LL | #[cfg_attr]
= note: for more information, visit <https://doc.rust-lang.org/reference/conditional-compilation.html#the-cfg_attr-attribute>
error[E0463]: can't find crate for `wloop`
--> $DIR/malformed-attrs.rs:215:1
--> $DIR/malformed-attrs.rs:214:1
|
LL | extern crate wloop;
| ^^^^^^^^^^^^^^^^^^^ can't find crate
error: malformed `allow` attribute input
--> $DIR/malformed-attrs.rs:181:1
--> $DIR/malformed-attrs.rs:180:1
|
LL | #[allow]
| ^^^^^^^^
@ -43,7 +43,7 @@ LL | #[allow(lint1, lint2, lint3, reason = "...")]
| +++++++++++++++++++++++++++++++++++++
error: malformed `expect` attribute input
--> $DIR/malformed-attrs.rs:183:1
--> $DIR/malformed-attrs.rs:182:1
|
LL | #[expect]
| ^^^^^^^^^
@ -59,7 +59,7 @@ LL | #[expect(lint1, lint2, lint3, reason = "...")]
| +++++++++++++++++++++++++++++++++++++
error: malformed `warn` attribute input
--> $DIR/malformed-attrs.rs:185:1
--> $DIR/malformed-attrs.rs:184:1
|
LL | #[warn]
| ^^^^^^^
@ -75,7 +75,7 @@ LL | #[warn(lint1, lint2, lint3, reason = "...")]
| +++++++++++++++++++++++++++++++++++++
error: malformed `deny` attribute input
--> $DIR/malformed-attrs.rs:187:1
--> $DIR/malformed-attrs.rs:186:1
|
LL | #[deny]
| ^^^^^^^
@ -91,7 +91,7 @@ LL | #[deny(lint1, lint2, lint3, reason = "...")]
| +++++++++++++++++++++++++++++++++++++
error: malformed `forbid` attribute input
--> $DIR/malformed-attrs.rs:189:1
--> $DIR/malformed-attrs.rs:188:1
|
LL | #[forbid]
| ^^^^^^^^^
@ -107,25 +107,25 @@ LL | #[forbid(lint1, lint2, lint3, reason = "...")]
| +++++++++++++++++++++++++++++++++++++
error: the `#[proc_macro]` attribute is only usable with crates of the `proc-macro` crate type
--> $DIR/malformed-attrs.rs:104:1
--> $DIR/malformed-attrs.rs:103:1
|
LL | #[proc_macro = 18]
| ^^^^^^^^^^^^^^^^^^
error: the `#[proc_macro_attribute]` attribute is only usable with crates of the `proc-macro` crate type
--> $DIR/malformed-attrs.rs:121:1
--> $DIR/malformed-attrs.rs:120:1
|
LL | #[proc_macro_attribute = 19]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: the `#[proc_macro_derive]` attribute is only usable with crates of the `proc-macro` crate type
--> $DIR/malformed-attrs.rs:128:1
--> $DIR/malformed-attrs.rs:127:1
|
LL | #[proc_macro_derive]
| ^^^^^^^^^^^^^^^^^^^^
error[E0658]: allow_internal_unsafe side-steps the unsafe_code lint
--> $DIR/malformed-attrs.rs:220:1
--> $DIR/malformed-attrs.rs:219:1
|
LL | #[allow_internal_unsafe = 1]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -134,7 +134,7 @@ LL | #[allow_internal_unsafe = 1]
= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
error[E0539]: malformed `windows_subsystem` attribute input
--> $DIR/malformed-attrs.rs:27:1
--> $DIR/malformed-attrs.rs:26:1
|
LL | #![windows_subsystem]
| ^^^-----------------^
@ -150,25 +150,25 @@ LL | #![windows_subsystem = "windows"]
| +++++++++++
error[E0539]: malformed `export_name` attribute input
--> $DIR/malformed-attrs.rs:30:1
--> $DIR/malformed-attrs.rs:29:1
|
LL | #[unsafe(export_name)]
| ^^^^^^^^^^^^^^^^^^^^^^ help: must be of the form: `#[export_name = "name"]`
error: `rustc_allow_const_fn_unstable` expects a list of feature names
--> $DIR/malformed-attrs.rs:32:1
--> $DIR/malformed-attrs.rs:31:1
|
LL | #[rustc_allow_const_fn_unstable]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: `allow_internal_unstable` expects a list of feature names
--> $DIR/malformed-attrs.rs:35:1
--> $DIR/malformed-attrs.rs:34:1
|
LL | #[allow_internal_unstable]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0539]: malformed `rustc_confusables` attribute input
--> $DIR/malformed-attrs.rs:37:1
--> $DIR/malformed-attrs.rs:36:1
|
LL | #[rustc_confusables]
| ^^^^^^^^^^^^^^^^^^^^
@ -177,7 +177,7 @@ LL | #[rustc_confusables]
| help: must be of the form: `#[rustc_confusables("name1", "name2", ...)]`
error: `#[rustc_confusables]` attribute cannot be used on functions
--> $DIR/malformed-attrs.rs:37:1
--> $DIR/malformed-attrs.rs:36:1
|
LL | #[rustc_confusables]
| ^^^^^^^^^^^^^^^^^^^^
@ -185,7 +185,7 @@ LL | #[rustc_confusables]
= help: `#[rustc_confusables]` can only be applied to inherent methods
error[E0539]: malformed `deprecated` attribute input
--> $DIR/malformed-attrs.rs:40:1
--> $DIR/malformed-attrs.rs:39:1
|
LL | #[deprecated = 5]
| ^^^^^^^^^^^^^^^-^
@ -193,7 +193,7 @@ LL | #[deprecated = 5]
| expected a string literal here
error[E0539]: malformed `rustc_macro_transparency` attribute input
--> $DIR/malformed-attrs.rs:44:1
--> $DIR/malformed-attrs.rs:43:1
|
LL | #[rustc_macro_transparency]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -208,7 +208,7 @@ LL | #[rustc_macro_transparency = "transparent"]
| +++++++++++++++
error: `#[rustc_macro_transparency]` attribute cannot be used on functions
--> $DIR/malformed-attrs.rs:44:1
--> $DIR/malformed-attrs.rs:43:1
|
LL | #[rustc_macro_transparency]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -216,7 +216,7 @@ LL | #[rustc_macro_transparency]
= help: `#[rustc_macro_transparency]` can only be applied to macro defs
error[E0539]: malformed `repr` attribute input
--> $DIR/malformed-attrs.rs:47:1
--> $DIR/malformed-attrs.rs:46:1
|
LL | #[repr]
| ^^^^^^^ expected this to be a list
@ -224,7 +224,7 @@ LL | #[repr]
= note: for more information, visit <https://doc.rust-lang.org/reference/type-layout.html#representations>
error[E0565]: malformed `rustc_as_ptr` attribute input
--> $DIR/malformed-attrs.rs:50:1
--> $DIR/malformed-attrs.rs:49:1
|
LL | #[rustc_as_ptr = 5]
| ^^^^^^^^^^^^^^^---^
@ -233,7 +233,7 @@ LL | #[rustc_as_ptr = 5]
| help: must be of the form: `#[rustc_as_ptr]`
error[E0539]: malformed `rustc_align` attribute input
--> $DIR/malformed-attrs.rs:55:1
--> $DIR/malformed-attrs.rs:54:1
|
LL | #[rustc_align]
| ^^^^^^^^^^^^^^
@ -242,7 +242,7 @@ LL | #[rustc_align]
| help: must be of the form: `#[rustc_align(<alignment in bytes>)]`
error[E0539]: malformed `optimize` attribute input
--> $DIR/malformed-attrs.rs:57:1
--> $DIR/malformed-attrs.rs:56:1
|
LL | #[optimize]
| ^^^^^^^^^^^ expected this to be a list
@ -257,7 +257,7 @@ LL | #[optimize(speed)]
| +++++++
error[E0565]: malformed `cold` attribute input
--> $DIR/malformed-attrs.rs:59:1
--> $DIR/malformed-attrs.rs:58:1
|
LL | #[cold = 1]
| ^^^^^^^---^
@ -266,7 +266,7 @@ LL | #[cold = 1]
| help: must be of the form: `#[cold]`
error[E0539]: malformed `must_use` attribute input
--> $DIR/malformed-attrs.rs:61:1
--> $DIR/malformed-attrs.rs:60:1
|
LL | #[must_use()]
| ^^^^^^^^^^--^
@ -284,7 +284,7 @@ LL + #[must_use]
|
error[E0565]: malformed `no_mangle` attribute input
--> $DIR/malformed-attrs.rs:63:1
--> $DIR/malformed-attrs.rs:62:1
|
LL | #[no_mangle = 1]
| ^^^^^^^^^^^^---^
@ -293,7 +293,7 @@ LL | #[no_mangle = 1]
| help: must be of the form: `#[no_mangle]`
error[E0565]: malformed `naked` attribute input
--> $DIR/malformed-attrs.rs:65:1
--> $DIR/malformed-attrs.rs:64:1
|
LL | #[unsafe(naked())]
| ^^^^^^^^^^^^^^--^^
@ -302,7 +302,7 @@ LL | #[unsafe(naked())]
| help: must be of the form: `#[naked]`
error[E0565]: malformed `track_caller` attribute input
--> $DIR/malformed-attrs.rs:67:1
--> $DIR/malformed-attrs.rs:66:1
|
LL | #[track_caller()]
| ^^^^^^^^^^^^^^--^
@ -311,13 +311,13 @@ LL | #[track_caller()]
| help: must be of the form: `#[track_caller]`
error[E0539]: malformed `export_name` attribute input
--> $DIR/malformed-attrs.rs:69:1
--> $DIR/malformed-attrs.rs:68:1
|
LL | #[export_name()]
| ^^^^^^^^^^^^^^^^ help: must be of the form: `#[export_name = "name"]`
error[E0805]: malformed `used` attribute input
--> $DIR/malformed-attrs.rs:71:1
--> $DIR/malformed-attrs.rs:70:1
|
LL | #[used()]
| ^^^^^^--^
@ -335,7 +335,7 @@ LL + #[used]
|
error: `#[used]` attribute cannot be used on functions
--> $DIR/malformed-attrs.rs:71:1
--> $DIR/malformed-attrs.rs:70:1
|
LL | #[used()]
| ^^^^^^^^^
@ -343,13 +343,13 @@ LL | #[used()]
= help: `#[used]` can only be applied to statics
error[E0539]: malformed `crate_name` attribute input
--> $DIR/malformed-attrs.rs:74:1
--> $DIR/malformed-attrs.rs:73:1
|
LL | #[crate_name]
| ^^^^^^^^^^^^^ help: must be of the form: `#[crate_name = "name"]`
error[E0539]: malformed `target_feature` attribute input
--> $DIR/malformed-attrs.rs:79:1
--> $DIR/malformed-attrs.rs:78:1
|
LL | #[target_feature]
| ^^^^^^^^^^^^^^^^^
@ -358,7 +358,7 @@ LL | #[target_feature]
| help: must be of the form: `#[target_feature(enable = "feat1, feat2")]`
error[E0565]: malformed `export_stable` attribute input
--> $DIR/malformed-attrs.rs:81:1
--> $DIR/malformed-attrs.rs:80:1
|
LL | #[export_stable = 1]
| ^^^^^^^^^^^^^^^^---^
@ -367,7 +367,7 @@ LL | #[export_stable = 1]
| help: must be of the form: `#[export_stable]`
error[E0539]: malformed `link` attribute input
--> $DIR/malformed-attrs.rs:83:1
--> $DIR/malformed-attrs.rs:82:1
|
LL | #[link]
| ^^^^^^^ expected this to be a list
@ -375,7 +375,7 @@ LL | #[link]
= note: for more information, visit <https://doc.rust-lang.org/reference/items/external-blocks.html#the-link-attribute>
error[E0539]: malformed `link_name` attribute input
--> $DIR/malformed-attrs.rs:87:1
--> $DIR/malformed-attrs.rs:86:1
|
LL | #[link_name]
| ^^^^^^^^^^^^ help: must be of the form: `#[link_name = "name"]`
@ -383,7 +383,7 @@ LL | #[link_name]
= note: for more information, visit <https://doc.rust-lang.org/reference/items/external-blocks.html#the-link_name-attribute>
error[E0539]: malformed `link_section` attribute input
--> $DIR/malformed-attrs.rs:91:1
--> $DIR/malformed-attrs.rs:90:1
|
LL | #[link_section]
| ^^^^^^^^^^^^^^^ help: must be of the form: `#[link_section = "name"]`
@ -391,7 +391,7 @@ LL | #[link_section]
= note: for more information, visit <https://doc.rust-lang.org/reference/abi.html#the-link_section-attribute>
error[E0539]: malformed `coverage` attribute input
--> $DIR/malformed-attrs.rs:93:1
--> $DIR/malformed-attrs.rs:92:1
|
LL | #[coverage]
| ^^^^^^^^^^^ this attribute is only valid with either `on` or `off` as an argument
@ -404,13 +404,13 @@ LL | #[coverage(on)]
| ++++
error[E0539]: malformed `sanitize` attribute input
--> $DIR/malformed-attrs.rs:95:1
--> $DIR/malformed-attrs.rs:94:1
|
LL | #[sanitize]
| ^^^^^^^^^^^ expected this to be a list
error[E0565]: malformed `no_implicit_prelude` attribute input
--> $DIR/malformed-attrs.rs:100:1
--> $DIR/malformed-attrs.rs:99:1
|
LL | #[no_implicit_prelude = 23]
| ^^^^^^^^^^^^^^^^^^^^^^----^
@ -419,7 +419,7 @@ LL | #[no_implicit_prelude = 23]
| help: must be of the form: `#[no_implicit_prelude]`
error[E0565]: malformed `proc_macro` attribute input
--> $DIR/malformed-attrs.rs:104:1
--> $DIR/malformed-attrs.rs:103:1
|
LL | #[proc_macro = 18]
| ^^^^^^^^^^^^^----^
@ -428,7 +428,7 @@ LL | #[proc_macro = 18]
| help: must be of the form: `#[proc_macro]`
error[E0539]: malformed `instruction_set` attribute input
--> $DIR/malformed-attrs.rs:111:1
--> $DIR/malformed-attrs.rs:110:1
|
LL | #[instruction_set]
| ^^^^^^^^^^^^^^^^^^
@ -439,7 +439,7 @@ LL | #[instruction_set]
= note: for more information, visit <https://doc.rust-lang.org/reference/attributes/codegen.html#the-instruction_set-attribute>
error[E0539]: malformed `patchable_function_entry` attribute input
--> $DIR/malformed-attrs.rs:113:1
--> $DIR/malformed-attrs.rs:112:1
|
LL | #[patchable_function_entry]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -448,7 +448,7 @@ LL | #[patchable_function_entry]
| help: must be of the form: `#[patchable_function_entry(prefix_nops = m, entry_nops = n)]`
error[E0565]: malformed `coroutine` attribute input
--> $DIR/malformed-attrs.rs:116:5
--> $DIR/malformed-attrs.rs:115:5
|
LL | #[coroutine = 63] || {}
| ^^^^^^^^^^^^----^
@ -457,7 +457,7 @@ LL | #[coroutine = 63] || {}
| help: must be of the form: `#[coroutine]`
error[E0565]: malformed `proc_macro_attribute` attribute input
--> $DIR/malformed-attrs.rs:121:1
--> $DIR/malformed-attrs.rs:120:1
|
LL | #[proc_macro_attribute = 19]
| ^^^^^^^^^^^^^^^^^^^^^^^----^
@ -466,7 +466,7 @@ LL | #[proc_macro_attribute = 19]
| help: must be of the form: `#[proc_macro_attribute]`
error[E0539]: malformed `must_use` attribute input
--> $DIR/malformed-attrs.rs:124:1
--> $DIR/malformed-attrs.rs:123:1
|
LL | #[must_use = 1]
| ^^^^^^^^^^^^^-^
@ -484,7 +484,7 @@ LL + #[must_use]
|
error[E0539]: malformed `proc_macro_derive` attribute input
--> $DIR/malformed-attrs.rs:128:1
--> $DIR/malformed-attrs.rs:127:1
|
LL | #[proc_macro_derive]
| ^^^^^^^^^^^^^^^^^^^^ expected this to be a list
@ -498,7 +498,7 @@ LL | #[proc_macro_derive(TraitName, attributes(name1, name2, ...))]
| ++++++++++++++++++++++++++++++++++++++++++
error[E0539]: malformed `rustc_layout_scalar_valid_range_start` attribute input
--> $DIR/malformed-attrs.rs:133:1
--> $DIR/malformed-attrs.rs:132:1
|
LL | #[rustc_layout_scalar_valid_range_start]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -507,7 +507,7 @@ LL | #[rustc_layout_scalar_valid_range_start]
| help: must be of the form: `#[rustc_layout_scalar_valid_range_start(start)]`
error[E0539]: malformed `rustc_layout_scalar_valid_range_end` attribute input
--> $DIR/malformed-attrs.rs:135:1
--> $DIR/malformed-attrs.rs:134:1
|
LL | #[rustc_layout_scalar_valid_range_end]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -516,7 +516,7 @@ LL | #[rustc_layout_scalar_valid_range_end]
| help: must be of the form: `#[rustc_layout_scalar_valid_range_end(end)]`
error[E0539]: malformed `must_not_suspend` attribute input
--> $DIR/malformed-attrs.rs:137:1
--> $DIR/malformed-attrs.rs:136:1
|
LL | #[must_not_suspend()]
| ^^^^^^^^^^^^^^^^^^--^
@ -532,7 +532,7 @@ LL + #[must_not_suspend]
|
error[E0539]: malformed `cfi_encoding` attribute input
--> $DIR/malformed-attrs.rs:139:1
--> $DIR/malformed-attrs.rs:138:1
|
LL | #[cfi_encoding = ""]
| ^^^^^^^^^^^^^^^^^--^
@ -541,7 +541,7 @@ LL | #[cfi_encoding = ""]
| help: must be of the form: `#[cfi_encoding = "encoding"]`
error[E0565]: malformed `marker` attribute input
--> $DIR/malformed-attrs.rs:158:1
--> $DIR/malformed-attrs.rs:157:1
|
LL | #[marker = 3]
| ^^^^^^^^^---^
@ -550,7 +550,7 @@ LL | #[marker = 3]
| help: must be of the form: `#[marker]`
error[E0565]: malformed `fundamental` attribute input
--> $DIR/malformed-attrs.rs:160:1
--> $DIR/malformed-attrs.rs:159:1
|
LL | #[fundamental()]
| ^^^^^^^^^^^^^--^
@ -559,7 +559,7 @@ LL | #[fundamental()]
| help: must be of the form: `#[fundamental]`
error[E0565]: malformed `ffi_pure` attribute input
--> $DIR/malformed-attrs.rs:168:5
--> $DIR/malformed-attrs.rs:167:5
|
LL | #[unsafe(ffi_pure = 1)]
| ^^^^^^^^^^^^^^^^^^---^^
@ -568,7 +568,7 @@ LL | #[unsafe(ffi_pure = 1)]
| help: must be of the form: `#[ffi_pure]`
error[E0539]: malformed `link_ordinal` attribute input
--> $DIR/malformed-attrs.rs:170:5
--> $DIR/malformed-attrs.rs:169:5
|
LL | #[link_ordinal]
| ^^^^^^^^^^^^^^^
@ -579,7 +579,7 @@ LL | #[link_ordinal]
= note: for more information, visit <https://doc.rust-lang.org/reference/items/external-blocks.html#the-link_ordinal-attribute>
error[E0565]: malformed `ffi_const` attribute input
--> $DIR/malformed-attrs.rs:174:5
--> $DIR/malformed-attrs.rs:173:5
|
LL | #[unsafe(ffi_const = 1)]
| ^^^^^^^^^^^^^^^^^^^---^^
@ -588,13 +588,13 @@ LL | #[unsafe(ffi_const = 1)]
| help: must be of the form: `#[ffi_const]`
error[E0539]: malformed `linkage` attribute input
--> $DIR/malformed-attrs.rs:176:5
--> $DIR/malformed-attrs.rs:175:5
|
LL | #[linkage]
| ^^^^^^^^^^ expected this to be of the form `linkage = "..."`
error[E0539]: malformed `debugger_visualizer` attribute input
--> $DIR/malformed-attrs.rs:191:1
--> $DIR/malformed-attrs.rs:190:1
|
LL | #[debugger_visualizer]
| ^^^^^^^^^^^^^^^^^^^^^^
@ -605,7 +605,7 @@ LL | #[debugger_visualizer]
= note: for more information, visit <https://doc.rust-lang.org/reference/attributes/debugger.html#the-debugger_visualizer-attribute>
error[E0565]: malformed `automatically_derived` attribute input
--> $DIR/malformed-attrs.rs:193:1
--> $DIR/malformed-attrs.rs:192:1
|
LL | #[automatically_derived = 18]
| ^^^^^^^^^^^^^^^^^^^^^^^^----^
@ -614,7 +614,7 @@ LL | #[automatically_derived = 18]
| help: must be of the form: `#[automatically_derived]`
error[E0565]: malformed `non_exhaustive` attribute input
--> $DIR/malformed-attrs.rs:201:1
--> $DIR/malformed-attrs.rs:200:1
|
LL | #[non_exhaustive = 1]
| ^^^^^^^^^^^^^^^^^---^
@ -623,7 +623,7 @@ LL | #[non_exhaustive = 1]
| help: must be of the form: `#[non_exhaustive]`
error[E0565]: malformed `thread_local` attribute input
--> $DIR/malformed-attrs.rs:207:1
--> $DIR/malformed-attrs.rs:206:1
|
LL | #[thread_local()]
| ^^^^^^^^^^^^^^--^
@ -632,7 +632,7 @@ LL | #[thread_local()]
| help: must be of the form: `#[thread_local]`
error[E0565]: malformed `no_link` attribute input
--> $DIR/malformed-attrs.rs:211:1
--> $DIR/malformed-attrs.rs:210:1
|
LL | #[no_link()]
| ^^^^^^^^^--^
@ -641,7 +641,7 @@ LL | #[no_link()]
| help: must be of the form: `#[no_link]`
error[E0539]: malformed `macro_use` attribute input
--> $DIR/malformed-attrs.rs:213:1
--> $DIR/malformed-attrs.rs:212:1
|
LL | #[macro_use = 1]
| ^^^^^^^^^^^^---^
@ -659,7 +659,7 @@ LL + #[macro_use]
|
error[E0539]: malformed `macro_export` attribute input
--> $DIR/malformed-attrs.rs:218:1
--> $DIR/malformed-attrs.rs:217:1
|
LL | #[macro_export = 18]
| ^^^^^^^^^^^^^^^----^
@ -676,7 +676,7 @@ LL + #[macro_export]
|
error[E0565]: malformed `allow_internal_unsafe` attribute input
--> $DIR/malformed-attrs.rs:220:1
--> $DIR/malformed-attrs.rs:219:1
|
LL | #[allow_internal_unsafe = 1]
| ^^^^^^^^^^^^^^^^^^^^^^^^---^
@ -685,7 +685,7 @@ LL | #[allow_internal_unsafe = 1]
| help: must be of the form: `#[allow_internal_unsafe]`
error: attribute should be applied to `const fn`
--> $DIR/malformed-attrs.rs:32:1
--> $DIR/malformed-attrs.rs:31:1
|
LL | #[rustc_allow_const_fn_unstable]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -697,7 +697,7 @@ LL | | }
| |_- not a `const fn`
warning: attribute should be applied to an `extern` block with non-Rust ABI
--> $DIR/malformed-attrs.rs:83:1
--> $DIR/malformed-attrs.rs:82:1
|
LL | #[link]
| ^^^^^^^
@ -712,19 +712,19 @@ LL | | }
= note: requested on the command line with `-W unused-attributes`
error: `#[repr(align(...))]` is not supported on functions
--> $DIR/malformed-attrs.rs:47:1
--> $DIR/malformed-attrs.rs:46:1
|
LL | #[repr]
| ^^^^^^^
|
help: use `#[rustc_align(...)]` instead
--> $DIR/malformed-attrs.rs:47:1
--> $DIR/malformed-attrs.rs:46:1
|
LL | #[repr]
| ^^^^^^^
warning: missing options for `on_unimplemented` attribute
--> $DIR/malformed-attrs.rs:143:1
--> $DIR/malformed-attrs.rs:142:1
|
LL | #[diagnostic::on_unimplemented]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -733,7 +733,7 @@ LL | #[diagnostic::on_unimplemented]
= note: `#[warn(malformed_diagnostic_attributes)]` (part of `#[warn(unknown_or_malformed_diagnostic_attributes)]`) on by default
warning: malformed `on_unimplemented` attribute
--> $DIR/malformed-attrs.rs:145:1
--> $DIR/malformed-attrs.rs:144:1
|
LL | #[diagnostic::on_unimplemented = 1]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ invalid option found here
@ -741,7 +741,7 @@ LL | #[diagnostic::on_unimplemented = 1]
= help: only `message`, `note` and `label` are allowed as options
error: valid forms for the attribute are `#[doc = "string"]`, `#[doc(alias)]`, `#[doc(attribute)]`, `#[doc(auto_cfg)]`, `#[doc(cfg)]`, `#[doc(fake_variadic)]`, `#[doc(hidden)]`, `#[doc(html_favicon_url)]`, `#[doc(html_logo_url)]`, `#[doc(html_no_source)]`, `#[doc(html_playground_url)]`, `#[doc(html_root_url)]`, `#[doc(include)]`, `#[doc(inline)]`, `#[doc(issue_tracker_base_url)]`, `#[doc(keyword)]`, `#[doc(masked)]`, `#[doc(no_default_passes)]`, `#[doc(no_inline)]`, `#[doc(notable_trait)]`, `#[doc(passes)]`, `#[doc(plugins)]`, `#[doc(rust_logo)]`, `#[doc(search_unbox)]`, `#[doc(spotlight)]`, and `#[doc(test)]`
--> $DIR/malformed-attrs.rs:42:1
--> $DIR/malformed-attrs.rs:41:1
|
LL | #[doc]
| ^^^^^^
@ -753,7 +753,7 @@ LL | #![deny(invalid_doc_attributes)]
| ^^^^^^^^^^^^^^^^^^^^^^
error: valid forms for the attribute are `#[inline(always)]`, `#[inline(never)]`, and `#[inline]`
--> $DIR/malformed-attrs.rs:52:1
--> $DIR/malformed-attrs.rs:51:1
|
LL | #[inline = 5]
| ^^^^^^^^^^^^^
@ -763,13 +763,13 @@ LL | #[inline = 5]
= note: `#[deny(ill_formed_attribute_input)]` (part of `#[deny(future_incompatible)]`) on by default
warning: crate-level attribute should be an inner attribute: add an exclamation mark: `#![crate_name]`
--> $DIR/malformed-attrs.rs:74:1
--> $DIR/malformed-attrs.rs:73:1
|
LL | #[crate_name]
| ^^^^^^^^^^^^^
|
note: this attribute does not have an `!`, which means it is applied to this function
--> $DIR/malformed-attrs.rs:115:1
--> $DIR/malformed-attrs.rs:114:1
|
LL | / fn test() {
LL | | #[coroutine = 63] || {}
@ -778,13 +778,13 @@ LL | | }
| |_^
error: valid forms for the attribute are `#[doc = "string"]`, `#[doc(alias)]`, `#[doc(attribute)]`, `#[doc(auto_cfg)]`, `#[doc(cfg)]`, `#[doc(fake_variadic)]`, `#[doc(hidden)]`, `#[doc(html_favicon_url)]`, `#[doc(html_logo_url)]`, `#[doc(html_no_source)]`, `#[doc(html_playground_url)]`, `#[doc(html_root_url)]`, `#[doc(include)]`, `#[doc(inline)]`, `#[doc(issue_tracker_base_url)]`, `#[doc(keyword)]`, `#[doc(masked)]`, `#[doc(no_default_passes)]`, `#[doc(no_inline)]`, `#[doc(notable_trait)]`, `#[doc(passes)]`, `#[doc(plugins)]`, `#[doc(rust_logo)]`, `#[doc(search_unbox)]`, `#[doc(spotlight)]`, and `#[doc(test)]`
--> $DIR/malformed-attrs.rs:77:1
--> $DIR/malformed-attrs.rs:76:1
|
LL | #[doc]
| ^^^^^^
warning: `#[link_name]` attribute cannot be used on functions
--> $DIR/malformed-attrs.rs:87:1
--> $DIR/malformed-attrs.rs:86:1
|
LL | #[link_name]
| ^^^^^^^^^^^^
@ -793,7 +793,7 @@ LL | #[link_name]
= help: `#[link_name]` can be applied to foreign functions and foreign statics
error: valid forms for the attribute are `#[ignore = "reason"]` and `#[ignore]`
--> $DIR/malformed-attrs.rs:97:1
--> $DIR/malformed-attrs.rs:96:1
|
LL | #[ignore()]
| ^^^^^^^^^^^
@ -802,7 +802,7 @@ LL | #[ignore()]
= note: for more information, see issue #57571 <https://github.com/rust-lang/rust/issues/57571>
warning: `#[no_implicit_prelude]` attribute cannot be used on functions
--> $DIR/malformed-attrs.rs:100:1
--> $DIR/malformed-attrs.rs:99:1
|
LL | #[no_implicit_prelude = 23]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -811,13 +811,13 @@ LL | #[no_implicit_prelude = 23]
= help: `#[no_implicit_prelude]` can be applied to crates and modules
warning: `#[diagnostic::do_not_recommend]` does not expect any arguments
--> $DIR/malformed-attrs.rs:152:1
--> $DIR/malformed-attrs.rs:151:1
|
LL | #[diagnostic::do_not_recommend()]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
warning: `#[automatically_derived]` attribute cannot be used on modules
--> $DIR/malformed-attrs.rs:193:1
--> $DIR/malformed-attrs.rs:192:1
|
LL | #[automatically_derived = 18]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -826,7 +826,7 @@ LL | #[automatically_derived = 18]
= help: `#[automatically_derived]` can only be applied to trait impl blocks
error: valid forms for the attribute are `#[ignore = "reason"]` and `#[ignore]`
--> $DIR/malformed-attrs.rs:227:1
--> $DIR/malformed-attrs.rs:226:1
|
LL | #[ignore = 1]
| ^^^^^^^^^^^^^
@ -835,7 +835,7 @@ LL | #[ignore = 1]
= note: for more information, see issue #57571 <https://github.com/rust-lang/rust/issues/57571>
error[E0308]: mismatched types
--> $DIR/malformed-attrs.rs:116:23
--> $DIR/malformed-attrs.rs:115:23
|
LL | fn test() {
| - help: a return type might be missing here: `-> _`
@ -843,7 +843,7 @@ LL | #[coroutine = 63] || {}
| ^^^^^ expected `()`, found coroutine
|
= note: expected unit type `()`
found coroutine `{coroutine@$DIR/malformed-attrs.rs:116:23: 116:25}`
found coroutine `{coroutine@$DIR/malformed-attrs.rs:115:23: 115:25}`
error: aborting due to 75 previous errors; 8 warnings emitted
@ -851,7 +851,7 @@ Some errors have detailed explanations: E0308, E0463, E0539, E0565, E0658, E0805
For more information about an error, try `rustc --explain E0308`.
Future incompatibility report: Future breakage diagnostic:
error: valid forms for the attribute are `#[inline(always)]`, `#[inline(never)]`, and `#[inline]`
--> $DIR/malformed-attrs.rs:52:1
--> $DIR/malformed-attrs.rs:51:1
|
LL | #[inline = 5]
| ^^^^^^^^^^^^^
@ -862,7 +862,7 @@ LL | #[inline = 5]
Future breakage diagnostic:
error: valid forms for the attribute are `#[ignore = "reason"]` and `#[ignore]`
--> $DIR/malformed-attrs.rs:97:1
--> $DIR/malformed-attrs.rs:96:1
|
LL | #[ignore()]
| ^^^^^^^^^^^
@ -873,7 +873,7 @@ LL | #[ignore()]
Future breakage diagnostic:
error: valid forms for the attribute are `#[ignore = "reason"]` and `#[ignore]`
--> $DIR/malformed-attrs.rs:227:1
--> $DIR/malformed-attrs.rs:226:1
|
LL | #[ignore = 1]
| ^^^^^^^^^^^^^

2
tests/ui/consts/precise-drop-allow-const-fn-unstable.rs
View file

@ -2,7 +2,7 @@
//@ compile-flags: --crate-type=lib -Cinstrument-coverage -Zno-profiler-runtime
//@[allow] check-pass
#![feature(staged_api, rustc_allow_const_fn_unstable)]
#![feature(staged_api, rustc_attrs)]
#![stable(feature = "rust_test", since = "1.0.0")]
#[stable(feature = "rust_test", since = "1.0.0")]

2
tests/ui/feature-gates/feature-gate-rustc-allow-const-fn-unstable.rs
View file

@ -1,6 +1,6 @@
#![allow(unused_macros)]
#[rustc_allow_const_fn_unstable()] //~ ERROR rustc_allow_const_fn_unstable side-steps
#[rustc_allow_const_fn_unstable()] //~ ERROR use of an internal attribute
const fn foo() { }
fn main() {}

8
tests/ui/feature-gates/feature-gate-rustc-allow-const-fn-unstable.stderr
View file

@ -1,12 +1,12 @@
error[E0658]: rustc_allow_const_fn_unstable side-steps feature gating and stability checks
error[E0658]: use of an internal attribute
--> $DIR/feature-gate-rustc-allow-const-fn-unstable.rs:3:1
|
LL | #[rustc_allow_const_fn_unstable()]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #69399 <https://github.com/rust-lang/rust/issues/69399> for more information
= help: add `#![feature(rustc_allow_const_fn_unstable)]` to the crate attributes to enable
= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
= help: add `#![feature(rustc_attrs)]` to the crate attributes to enable
= note: the `#[rustc_allow_const_fn_unstable]` attribute is an internal implementation detail that will never be stable
= note: rustc_allow_const_fn_unstable side-steps feature gating and stability checks
error: aborting due to 1 previous error

2
tests/ui/traits/const-traits/staged-api.rs
View file

@ -5,7 +5,7 @@
#![feature(local_feature)]
#![feature(const_trait_impl)]
#![feature(staged_api)]
#![feature(rustc_allow_const_fn_unstable)]
#![feature(rustc_attrs)]
#![stable(feature = "rust1", since = "1.0.0")]
//@ aux-build: staged-api.rs