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Remove EncodeCrossCrate from BUILTIN_ATTRIBUTES

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This commit is contained in:
Jonathan Brouwer
2026-04-04 13:35:23 +02:00
parent cb87c36bd9
commit f967bf3f29
3 changed files with 169 additions and 290 deletions
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compiler/rustc_feature/src/builtin_attrs.rs
+168 -284
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@@ -7,7 +7,6 @@
use AttributeType::*;
use rustc_data_structures::fx::FxHashMap;
use rustc_hir::AttrStyle;
use rustc_hir::attrs::EncodeCrossCrate;
use rustc_span::edition::Edition;
use rustc_span::{Symbol, sym};
@@ -266,30 +265,27 @@ macro_rules! template {
}
macro_rules! ungated {
(unsafe($edition:ident) $attr:ident, $typ:expr, $duplicates:expr, $encode_cross_crate:expr $(,)?) => {
(unsafe($edition:ident) $attr:ident, $typ:expr, $duplicates:expr $(,)?) => {
BuiltinAttribute {
name: sym::$attr,
encode_cross_crate: $encode_cross_crate,
type_: $typ,
safety: AttributeSafety::Unsafe { unsafe_since: Some(Edition::$edition) },
gate: Ungated,
duplicates: $duplicates,
}
};
(unsafe $attr:ident, $typ:expr, $duplicates:expr, $encode_cross_crate:expr $(,)?) => {
(unsafe $attr:ident, $typ:expr, $duplicates:expr $(,)?) => {
BuiltinAttribute {
name: sym::$attr,
encode_cross_crate: $encode_cross_crate,
type_: $typ,
safety: AttributeSafety::Unsafe { unsafe_since: None },
gate: Ungated,
duplicates: $duplicates,
}
};
($attr:ident, $typ:expr, $duplicates:expr, $encode_cross_crate:expr $(,)?) => {
($attr:ident, $typ:expr, $duplicates:expr $(,)?) => {
BuiltinAttribute {
name: sym::$attr,
encode_cross_crate: $encode_cross_crate,
type_: $typ,
safety: AttributeSafety::Normal,
gate: Ungated,
@@ -299,10 +295,9 @@ macro_rules! ungated {
}
macro_rules! gated {
(unsafe $attr:ident, $typ:expr, $duplicates:expr, $encode_cross_crate:expr, $gate:ident, $message:expr $(,)?) => {
(unsafe $attr:ident, $typ:expr, $duplicates:expr, $gate:ident, $message:expr $(,)?) => {
BuiltinAttribute {
name: sym::$attr,
encode_cross_crate: $encode_cross_crate,
type_: $typ,
safety: AttributeSafety::Unsafe { unsafe_since: None },
duplicates: $duplicates,
@@ -314,10 +309,9 @@ macro_rules! gated {
},
}
};
(unsafe $attr:ident, $typ:expr, $duplicates:expr, $encode_cross_crate:expr, $message:expr $(,)?) => {
(unsafe $attr:ident, $typ:expr, $duplicates:expr, $message:expr $(,)?) => {
BuiltinAttribute {
name: sym::$attr,
encode_cross_crate: $encode_cross_crate,
type_: $typ,
safety: AttributeSafety::Unsafe { unsafe_since: None },
duplicates: $duplicates,
@@ -329,10 +323,9 @@ macro_rules! gated {
},
}
};
($attr:ident, $typ:expr, $duplicates:expr, $encode_cross_crate:expr, $gate:ident, $message:expr $(,)?) => {
($attr:ident, $typ:expr, $duplicates:expr, $gate:ident, $message:expr $(,)?) => {
BuiltinAttribute {
name: sym::$attr,
encode_cross_crate: $encode_cross_crate,
type_: $typ,
safety: AttributeSafety::Normal,
duplicates: $duplicates,
@@ -344,10 +337,9 @@ macro_rules! gated {
},
}
};
($attr:ident, $typ:expr, $duplicates:expr, $encode_cross_crate:expr, $message:expr $(,)?) => {
($attr:ident, $typ:expr, $duplicates:expr, $message:expr $(,)?) => {
BuiltinAttribute {
name: sym::$attr,
encode_cross_crate: $encode_cross_crate,
type_: $typ,
safety: AttributeSafety::Normal,
duplicates: $duplicates,
@@ -362,12 +354,11 @@ macro_rules! gated {
}
macro_rules! rustc_attr {
(TEST, $attr:ident, $typ:expr, $duplicate:expr, $encode_cross_crate:expr $(,)?) => {
(TEST, $attr:ident, $typ:expr, $duplicate:expr $(,)?) => {
rustc_attr!(
$attr,
$typ,
$duplicate,
$encode_cross_crate,
concat!(
"the `#[",
stringify!($attr),
@@ -375,10 +366,9 @@ macro_rules! rustc_attr {
),
)
};
($attr:ident, $typ:expr, $duplicates:expr, $encode_cross_crate:expr, $($notes:expr),* $(,)?) => {
($attr:ident, $typ:expr, $duplicates:expr, $($notes:expr),* $(,)?) => {
BuiltinAttribute {
name: sym::$attr,
encode_cross_crate: $encode_cross_crate,
type_: $typ,
safety: AttributeSafety::Normal,
duplicates: $duplicates,
@@ -405,11 +395,6 @@ macro_rules! experimental {
pub struct BuiltinAttribute {
pub name: Symbol,
/// Whether this attribute is encode cross crate.
///
/// If so, it is encoded in the crate metadata.
/// Otherwise, it can only be used in the local crate.
pub encode_cross_crate: EncodeCrossCrate,
pub type_: AttributeType,
pub safety: AttributeSafety,
pub duplicates: AttributeDuplicates,
@@ -426,245 +411,242 @@ pub struct BuiltinAttribute {
// Conditional compilation:
ungated!(
cfg, Normal,
DuplicatesOk, EncodeCrossCrate::No
DuplicatesOk,
),
ungated!(
cfg_attr, Normal,
DuplicatesOk, EncodeCrossCrate::No
DuplicatesOk,
),
// Testing:
ungated!(
ignore, Normal,
WarnFollowing, EncodeCrossCrate::No,
WarnFollowing,
),
ungated!(
should_panic, Normal,
FutureWarnFollowing, EncodeCrossCrate::No,
FutureWarnFollowing,
),
// Macros:
ungated!(
automatically_derived, Normal,
WarnFollowing, EncodeCrossCrate::Yes
WarnFollowing,
),
ungated!(
macro_use, Normal,
WarnFollowingWordOnly, EncodeCrossCrate::No,
WarnFollowingWordOnly,
),
ungated!(macro_escape, Normal, WarnFollowing, EncodeCrossCrate::No), // Deprecated synonym for `macro_use`.
ungated!(macro_escape, Normal, WarnFollowing,), // Deprecated synonym for `macro_use`.
ungated!(
macro_export, Normal,
WarnFollowing, EncodeCrossCrate::Yes
WarnFollowing,
),
ungated!(
proc_macro, Normal,
ErrorFollowing, EncodeCrossCrate::No
ErrorFollowing,
),
ungated!(
proc_macro_derive, Normal,
ErrorFollowing, EncodeCrossCrate::No,
ErrorFollowing,
),
ungated!(
proc_macro_attribute, Normal,
ErrorFollowing, EncodeCrossCrate::No
ErrorFollowing,
),
// Lints:
ungated!(
warn, Normal,
DuplicatesOk, EncodeCrossCrate::No,
DuplicatesOk,
),
ungated!(
allow, Normal,
DuplicatesOk, EncodeCrossCrate::No,
DuplicatesOk,
),
ungated!(
expect, Normal,
DuplicatesOk, EncodeCrossCrate::No,
DuplicatesOk,
),
ungated!(
forbid, Normal,
DuplicatesOk, EncodeCrossCrate::No
DuplicatesOk,
),
ungated!(
deny, Normal,
DuplicatesOk, EncodeCrossCrate::No
DuplicatesOk,
),
ungated!(
must_use, Normal,
FutureWarnFollowing, EncodeCrossCrate::Yes
FutureWarnFollowing,
),
gated!(
must_not_suspend, Normal, WarnFollowing,
EncodeCrossCrate::Yes, experimental!(must_not_suspend)
must_not_suspend, Normal, WarnFollowing, experimental!(must_not_suspend)
),
ungated!(
deprecated, Normal,
ErrorFollowing, EncodeCrossCrate::Yes
ErrorFollowing,
),
// Crate properties:
ungated!(
crate_name, CrateLevel,
FutureWarnFollowing, EncodeCrossCrate::No,
FutureWarnFollowing,
),
ungated!(
crate_type, CrateLevel,
DuplicatesOk, EncodeCrossCrate::No,
DuplicatesOk,
),
// ABI, linking, symbols, and FFI
ungated!(
link, Normal,
DuplicatesOk, EncodeCrossCrate::No,
DuplicatesOk,
),
ungated!(
link_name, Normal,
FutureWarnPreceding, EncodeCrossCrate::Yes
FutureWarnPreceding,
),
ungated!(
no_link, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
ungated!(
repr, Normal,
DuplicatesOk, EncodeCrossCrate::No
DuplicatesOk,
),
// FIXME(#82232, #143834): temporarily renamed to mitigate `#[align]` nameres ambiguity
gated!(rustc_align, Normal, DuplicatesOk, EncodeCrossCrate::No, fn_align, experimental!(rustc_align)),
gated!(rustc_align_static, Normal, DuplicatesOk, EncodeCrossCrate::No, static_align, experimental!(rustc_align_static)),
gated!(rustc_align, Normal, DuplicatesOk, fn_align, experimental!(rustc_align)),
gated!(rustc_align_static, Normal, DuplicatesOk, static_align, experimental!(rustc_align_static)),
ungated!(
unsafe(Edition2024) export_name, Normal,
FutureWarnPreceding, EncodeCrossCrate::No
FutureWarnPreceding,
),
ungated!(
unsafe(Edition2024) link_section, Normal,
FutureWarnPreceding, EncodeCrossCrate::No
FutureWarnPreceding,
),
ungated!(
unsafe(Edition2024) no_mangle, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
ungated!(
used, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
ungated!(
link_ordinal, Normal,
ErrorPreceding, EncodeCrossCrate::Yes
ErrorPreceding,
),
ungated!(
unsafe naked, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
// See `TyAndLayout::pass_indirectly_in_non_rustic_abis` for details.
rustc_attr!(
rustc_pass_indirectly_in_non_rustic_abis, Normal, ErrorFollowing,
EncodeCrossCrate::No,
"types marked with `#[rustc_pass_indirectly_in_non_rustic_abis]` are always passed indirectly by non-Rustic ABIs"
),
// Limits:
ungated!(
recursion_limit, CrateLevel,
FutureWarnFollowing, EncodeCrossCrate::No
FutureWarnFollowing,
),
ungated!(
type_length_limit, CrateLevel,
FutureWarnFollowing, EncodeCrossCrate::No
FutureWarnFollowing,
),
gated!(
move_size_limit, CrateLevel, ErrorFollowing,
EncodeCrossCrate::No, large_assignments, experimental!(move_size_limit)
move_size_limit, CrateLevel, ErrorFollowing, large_assignments, experimental!(move_size_limit)
),
// Entry point:
ungated!(
no_main, CrateLevel,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
// Modules, prelude, and resolution:
ungated!(
path, Normal,
FutureWarnFollowing, EncodeCrossCrate::No
FutureWarnFollowing,
),
ungated!(
no_std, CrateLevel,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
ungated!(
no_implicit_prelude, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
ungated!(
non_exhaustive, Normal,
WarnFollowing, EncodeCrossCrate::Yes
WarnFollowing,
),
// Runtime
ungated!(
windows_subsystem, CrateLevel,
FutureWarnFollowing, EncodeCrossCrate::No
FutureWarnFollowing,
),
ungated!( // RFC 2070
panic_handler, Normal,
WarnFollowing, EncodeCrossCrate::Yes
WarnFollowing,
),
// Code generation:
ungated!(
inline, Normal,
FutureWarnFollowing, EncodeCrossCrate::No
FutureWarnFollowing,
),
ungated!(
cold, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
ungated!(
no_builtins, CrateLevel,
WarnFollowing, EncodeCrossCrate::Yes
WarnFollowing,
),
ungated!(
target_feature, Normal,
DuplicatesOk, EncodeCrossCrate::No,
DuplicatesOk,
),
ungated!(
track_caller, Normal,
WarnFollowing, EncodeCrossCrate::Yes
WarnFollowing,
),
ungated!(
instruction_set, Normal,
ErrorPreceding, EncodeCrossCrate::No
ErrorPreceding,
),
gated!(
unsafe force_target_feature, Normal,
DuplicatesOk, EncodeCrossCrate::No, effective_target_features, experimental!(force_target_feature)
DuplicatesOk, effective_target_features, experimental!(force_target_feature)
),
gated!(
sanitize, Normal, ErrorPreceding,
EncodeCrossCrate::No, sanitize, experimental!(sanitize),
sanitize, experimental!(sanitize),
),
gated!(
coverage, Normal,
ErrorPreceding, EncodeCrossCrate::No,
ErrorPreceding,
coverage_attribute, experimental!(coverage)
),
ungated!(
doc, Normal,
DuplicatesOk, EncodeCrossCrate::Yes
DuplicatesOk,
),
// Debugging
ungated!(
debugger_visualizer, Normal,
DuplicatesOk, EncodeCrossCrate::No
DuplicatesOk,
),
ungated!(
collapse_debuginfo, Normal,
ErrorFollowing, EncodeCrossCrate::Yes
ErrorFollowing,
),
// ==========================================================================
@@ -673,71 +655,62 @@ pub struct BuiltinAttribute {
// Linking:
gated!(
export_stable, Normal, WarnFollowing,
EncodeCrossCrate::No, experimental!(export_stable)
export_stable, Normal, WarnFollowing, experimental!(export_stable)
),
// Testing:
gated!(
test_runner, CrateLevel, ErrorFollowing,
EncodeCrossCrate::Yes, custom_test_frameworks,
test_runner, CrateLevel, ErrorFollowing, custom_test_frameworks,
"custom test frameworks are an unstable feature",
),
gated!(
reexport_test_harness_main, CrateLevel, ErrorFollowing,
EncodeCrossCrate::No, custom_test_frameworks,
reexport_test_harness_main, CrateLevel, ErrorFollowing, custom_test_frameworks,
"custom test frameworks are an unstable feature",
),
// RFC #1268
gated!(
marker, Normal, WarnFollowing, EncodeCrossCrate::No,
marker_trait_attr, experimental!(marker)
marker, Normal, WarnFollowing,marker_trait_attr, experimental!(marker)
),
gated!(
thread_local, Normal, WarnFollowing, EncodeCrossCrate::No,
"`#[thread_local]` is an experimental feature, and does not currently handle destructors",
thread_local, Normal, WarnFollowing,"`#[thread_local]` is an experimental feature, and does not currently handle destructors",
),
gated!(
no_core, CrateLevel, WarnFollowing,
EncodeCrossCrate::No, experimental!(no_core)
no_core, CrateLevel, WarnFollowing, experimental!(no_core)
),
// RFC 2412
gated!(
optimize, Normal, ErrorPreceding,
EncodeCrossCrate::No, optimize_attribute, experimental!(optimize)
optimize_attribute, experimental!(optimize)
),
gated!(
unsafe ffi_pure, Normal, WarnFollowing,
EncodeCrossCrate::No, experimental!(ffi_pure)
unsafe ffi_pure, Normal, WarnFollowing, experimental!(ffi_pure)
),
gated!(
unsafe ffi_const, Normal, WarnFollowing,
EncodeCrossCrate::No, experimental!(ffi_const)
unsafe ffi_const, Normal, WarnFollowing, experimental!(ffi_const)
),
gated!(
register_tool, CrateLevel, DuplicatesOk,
EncodeCrossCrate::No, experimental!(register_tool),
experimental!(register_tool),
),
// `#[cfi_encoding = ""]`
gated!(
cfi_encoding, Normal, ErrorPreceding,
EncodeCrossCrate::Yes, experimental!(cfi_encoding)
experimental!(cfi_encoding)
),
// `#[coroutine]` attribute to be applied to closures to make them coroutines instead
gated!(
coroutine, Normal, ErrorFollowing,
EncodeCrossCrate::No, coroutines, experimental!(coroutine)
coroutine, Normal, ErrorFollowing, coroutines, experimental!(coroutine)
),
// RFC 3543
// `#[patchable_function_entry(prefix_nops = m, entry_nops = n)]`
gated!(
patchable_function_entry, Normal, ErrorPreceding,
EncodeCrossCrate::Yes, experimental!(patchable_function_entry)
experimental!(patchable_function_entry)
),
// The `#[loop_match]` and `#[const_continue]` attributes are part of the
@@ -745,12 +718,10 @@ pub struct BuiltinAttribute {
//
// - https://github.com/rust-lang/rust/issues/132306
gated!(
const_continue, Normal, ErrorFollowing,
EncodeCrossCrate::No, loop_match, experimental!(const_continue)
const_continue, Normal, ErrorFollowing, loop_match, experimental!(const_continue)
),
gated!(
loop_match, Normal, ErrorFollowing,
EncodeCrossCrate::No, loop_match, experimental!(loop_match)
loop_match, Normal, ErrorFollowing, loop_match, experimental!(loop_match)
),
// The `#[pin_v2]` attribute is part of the `pin_ergonomics` experiment
@@ -758,8 +729,7 @@ pub struct BuiltinAttribute {
//
// - https://github.com/rust-lang/rust/issues/130494
gated!(
pin_v2, Normal, ErrorFollowing,
EncodeCrossCrate::Yes, pin_ergonomics, experimental!(pin_v2),
pin_v2, Normal, ErrorFollowing, pin_ergonomics, experimental!(pin_v2),
),
// ==========================================================================
@@ -768,63 +738,58 @@ pub struct BuiltinAttribute {
ungated!(
feature, CrateLevel,
DuplicatesOk, EncodeCrossCrate::No,
DuplicatesOk,
),
// DuplicatesOk since it has its own validation
ungated!(
stable, Normal,
DuplicatesOk, EncodeCrossCrate::No,
DuplicatesOk,
),
ungated!(
unstable, Normal,
DuplicatesOk,
EncodeCrossCrate::Yes
),
ungated!(
unstable_feature_bound, Normal,
DuplicatesOk, EncodeCrossCrate::No,
DuplicatesOk,
),
ungated!(
rustc_const_unstable, Normal,
DuplicatesOk, EncodeCrossCrate::Yes
DuplicatesOk,
),
ungated!(
rustc_const_stable, Normal,
DuplicatesOk, EncodeCrossCrate::No,
DuplicatesOk,
),
ungated!(
rustc_default_body_unstable, Normal,
DuplicatesOk, EncodeCrossCrate::No
DuplicatesOk,
),
gated!(
allow_internal_unstable, Normal,
DuplicatesOk, EncodeCrossCrate::Yes,
DuplicatesOk,
"allow_internal_unstable side-steps feature gating and stability checks",
),
gated!(
allow_internal_unsafe, Normal, WarnFollowing,
EncodeCrossCrate::No, "allow_internal_unsafe side-steps the unsafe_code lint",
allow_internal_unsafe, Normal, WarnFollowing, "allow_internal_unsafe side-steps the unsafe_code lint",
),
gated!(
rustc_eii_foreign_item, Normal,
ErrorFollowing, EncodeCrossCrate::Yes, eii_internals,
ErrorFollowing, eii_internals,
"used internally to mark types with a `transparent` representation when it is guaranteed by the documentation",
),
rustc_attr!(
rustc_allowed_through_unstable_modules, Normal,
WarnFollowing, EncodeCrossCrate::No,
"rustc_allowed_through_unstable_modules special cases accidental stabilizations of stable items \
WarnFollowing,"rustc_allowed_through_unstable_modules special cases accidental stabilizations of stable items \
through unstable paths"
),
rustc_attr!(
rustc_deprecated_safe_2024, Normal,
ErrorFollowing, EncodeCrossCrate::Yes,
"`#[rustc_deprecated_safe_2024]` is used to declare functions unsafe across the edition 2024 boundary",
ErrorFollowing,"`#[rustc_deprecated_safe_2024]` is used to declare functions unsafe across the edition 2024 boundary",
),
rustc_attr!(
rustc_pub_transparent, Normal,
ErrorFollowing, EncodeCrossCrate::Yes,
"used internally to mark types with a `transparent` representation when it is guaranteed by the documentation",
ErrorFollowing,"used internally to mark types with a `transparent` representation when it is guaranteed by the documentation",
),
@@ -832,10 +797,9 @@ pub struct BuiltinAttribute {
// Internal attributes: Type system related:
// ==========================================================================
gated!(fundamental, Normal, WarnFollowing, EncodeCrossCrate::Yes, experimental!(fundamental)),
gated!(fundamental, Normal, WarnFollowing, experimental!(fundamental)),
gated!(
may_dangle, Normal, WarnFollowing,
EncodeCrossCrate::No, dropck_eyepatch,
may_dangle, Normal, WarnFollowing, dropck_eyepatch,
"`may_dangle` has unstable semantics and may be removed in the future",
),
@@ -843,7 +807,6 @@ pub struct BuiltinAttribute {
rustc_never_type_options,
Normal,
ErrorFollowing,
EncodeCrossCrate::No,
"`rustc_never_type_options` is used to experiment with never type fallback and work on \
never type stabilization"
),
@@ -854,53 +817,41 @@ pub struct BuiltinAttribute {
rustc_attr!(
rustc_allocator, Normal, WarnFollowing,
EncodeCrossCrate::No,
),
rustc_attr!(
rustc_nounwind, Normal, WarnFollowing,
EncodeCrossCrate::No,
),
rustc_attr!(
rustc_reallocator, Normal, WarnFollowing,
EncodeCrossCrate::No,
),
rustc_attr!(
rustc_deallocator, Normal, WarnFollowing,
EncodeCrossCrate::No,
),
rustc_attr!(
rustc_allocator_zeroed, Normal, WarnFollowing,
EncodeCrossCrate::No,
),
rustc_attr!(
rustc_allocator_zeroed_variant, Normal, ErrorPreceding,
EncodeCrossCrate::Yes,
),
gated!(
default_lib_allocator, Normal, WarnFollowing,
EncodeCrossCrate::No, allocator_internals, experimental!(default_lib_allocator),
default_lib_allocator, Normal, WarnFollowing, allocator_internals, experimental!(default_lib_allocator),
),
gated!(
needs_allocator, Normal, WarnFollowing,
EncodeCrossCrate::No, allocator_internals, experimental!(needs_allocator),
needs_allocator, Normal, WarnFollowing, allocator_internals, experimental!(needs_allocator),
),
gated!(
panic_runtime, CrateLevel, WarnFollowing,
EncodeCrossCrate::No, experimental!(panic_runtime)
panic_runtime, CrateLevel, WarnFollowing, experimental!(panic_runtime)
),
gated!(
needs_panic_runtime, CrateLevel, WarnFollowing,
EncodeCrossCrate::No, experimental!(needs_panic_runtime)
needs_panic_runtime, CrateLevel, WarnFollowing, experimental!(needs_panic_runtime)
),
gated!(
compiler_builtins, CrateLevel, WarnFollowing,
EncodeCrossCrate::No,
"the `#[compiler_builtins]` attribute is used to identify the `compiler_builtins` crate \
which contains compiler-rt intrinsics and will never be stable",
),
gated!(
profiler_runtime, CrateLevel, WarnFollowing,
EncodeCrossCrate::No,
"the `#[profiler_runtime]` attribute is used to identify the `profiler_builtins` crate \
which contains the profiler runtime and will never be stable",
),
@@ -911,20 +862,17 @@ pub struct BuiltinAttribute {
gated!(
linkage, Normal,
ErrorPreceding, EncodeCrossCrate::No,
ErrorPreceding,
"the `linkage` attribute is experimental and not portable across platforms",
),
rustc_attr!(
rustc_std_internal_symbol, Normal, WarnFollowing,
EncodeCrossCrate::No,
),
rustc_attr!(
rustc_objc_class, Normal, ErrorPreceding,
EncodeCrossCrate::No,
),
rustc_attr!(
rustc_objc_selector, Normal, ErrorPreceding,
EncodeCrossCrate::No,
),
// ==========================================================================
@@ -934,38 +882,31 @@ pub struct BuiltinAttribute {
rustc_attr!(
rustc_builtin_macro, Normal,
ErrorFollowing,
EncodeCrossCrate::Yes,
),
rustc_attr!(
rustc_proc_macro_decls, Normal, WarnFollowing,
EncodeCrossCrate::No,
),
rustc_attr!(
rustc_macro_transparency, Normal,
ErrorFollowing,
EncodeCrossCrate::Yes, "used internally for testing macro hygiene",
ErrorFollowing, "used internally for testing macro hygiene",
),
rustc_attr!(
rustc_autodiff, Normal,
DuplicatesOk,
EncodeCrossCrate::Yes,
),
rustc_attr!(
rustc_offload_kernel, Normal,
DuplicatesOk,
EncodeCrossCrate::Yes,
),
// Traces that are left when `cfg` and `cfg_attr` attributes are expanded.
// The attributes are not gated, to avoid stability errors, but they cannot be used in stable
// or unstable code directly because `sym::cfg_(attr_)trace` are not valid identifiers, they
// can only be generated by the compiler.
ungated!(
cfg_trace, Normal, DuplicatesOk,
EncodeCrossCrate::Yes
cfg_trace, Normal, DuplicatesOk
),
ungated!(
cfg_attr_trace, Normal, DuplicatesOk,
EncodeCrossCrate::No
cfg_attr_trace, Normal, DuplicatesOk
),
// ==========================================================================
@@ -974,47 +915,46 @@ pub struct BuiltinAttribute {
rustc_attr!(
rustc_on_unimplemented, Normal,
ErrorFollowing, EncodeCrossCrate::Yes,
"see `#[diagnostic::on_unimplemented]` for the stable equivalent of this attribute"
ErrorFollowing,"see `#[diagnostic::on_unimplemented]` for the stable equivalent of this attribute"
),
rustc_attr!(
rustc_confusables, Normal,
ErrorFollowing, EncodeCrossCrate::Yes,
ErrorFollowing,
),
// Enumerates "identity-like" conversion methods to suggest on type mismatch.
rustc_attr!(
rustc_conversion_suggestion, Normal,
WarnFollowing, EncodeCrossCrate::Yes,
WarnFollowing,
),
// Prevents field reads in the marked trait or method to be considered
// during dead code analysis.
rustc_attr!(
rustc_trivial_field_reads, Normal,
WarnFollowing, EncodeCrossCrate::Yes,
WarnFollowing,
),
// Used by the `rustc::potential_query_instability` lint to warn methods which
// might not be stable during incremental compilation.
rustc_attr!(
rustc_lint_query_instability, Normal,
WarnFollowing, EncodeCrossCrate::Yes,
WarnFollowing,
),
// Used by the `rustc::untracked_query_information` lint to warn methods which
// might not be stable during incremental compilation.
rustc_attr!(
rustc_lint_untracked_query_information, Normal,
WarnFollowing, EncodeCrossCrate::Yes,
WarnFollowing,
),
// Used by the `rustc::bad_opt_access` lint to identify `DebuggingOptions` and `CodegenOptions`
// types (as well as any others in future).
rustc_attr!(
rustc_lint_opt_ty, Normal,
WarnFollowing, EncodeCrossCrate::Yes,
WarnFollowing,
),
// Used by the `rustc::bad_opt_access` lint on fields
// types (as well as any others in future).
rustc_attr!(
rustc_lint_opt_deny_field_access, Normal,
WarnFollowing, EncodeCrossCrate::Yes,
WarnFollowing,
),
// ==========================================================================
@@ -1022,30 +962,25 @@ pub struct BuiltinAttribute {
// ==========================================================================
rustc_attr!(
rustc_promotable, Normal, WarnFollowing,
EncodeCrossCrate::No, ),
rustc_promotable, Normal, WarnFollowing, ),
rustc_attr!(
rustc_legacy_const_generics, Normal, ErrorFollowing,
EncodeCrossCrate::Yes,
),
// Do not const-check this function's body. It will always get replaced during CTFE via `hook_special_const_fn`.
rustc_attr!(
rustc_do_not_const_check, Normal, WarnFollowing,
EncodeCrossCrate::Yes, "`#[rustc_do_not_const_check]` skips const-check for this function's body",
rustc_do_not_const_check, Normal, WarnFollowing, "`#[rustc_do_not_const_check]` skips const-check for this function's body",
),
rustc_attr!(
rustc_const_stable_indirect, Normal,
WarnFollowing,
EncodeCrossCrate::No,
"this is an internal implementation detail",
WarnFollowing,"this is an internal implementation detail",
),
rustc_attr!(
rustc_intrinsic_const_stable_indirect, Normal,
WarnFollowing, EncodeCrossCrate::No, "this is an internal implementation detail",
WarnFollowing, "this is an internal implementation detail",
),
rustc_attr!(
rustc_allow_const_fn_unstable, Normal,
DuplicatesOk, EncodeCrossCrate::No,
DuplicatesOk,
"rustc_allow_const_fn_unstable side-steps feature gating and stability checks"
),
@@ -1055,25 +990,21 @@ pub struct BuiltinAttribute {
rustc_attr!(
rustc_layout_scalar_valid_range_start, Normal, ErrorFollowing,
EncodeCrossCrate::Yes,
"the `#[rustc_layout_scalar_valid_range_start]` attribute is just used to enable \
niche optimizations in the standard library",
),
rustc_attr!(
rustc_layout_scalar_valid_range_end, Normal, ErrorFollowing,
EncodeCrossCrate::Yes,
"the `#[rustc_layout_scalar_valid_range_end]` attribute is just used to enable \
niche optimizations in the standard library",
),
rustc_attr!(
rustc_simd_monomorphize_lane_limit, Normal, ErrorFollowing,
EncodeCrossCrate::Yes,
"the `#[rustc_simd_monomorphize_lane_limit]` attribute is just used by std::simd \
for better error messages",
),
rustc_attr!(
rustc_nonnull_optimization_guaranteed, Normal, WarnFollowing,
EncodeCrossCrate::Yes,
"the `#[rustc_nonnull_optimization_guaranteed]` attribute is just used to document \
guaranteed niche optimizations in the standard library",
"the compiler does not even check whether the type indeed is being non-null-optimized; \
@@ -1084,85 +1015,67 @@ pub struct BuiltinAttribute {
// Internal attributes, Misc:
// ==========================================================================
gated!(
lang, Normal, DuplicatesOk, EncodeCrossCrate::No, lang_items,
lang, Normal, DuplicatesOk, lang_items,
"lang items are subject to change",
),
rustc_attr!(
rustc_as_ptr, Normal, ErrorFollowing,
EncodeCrossCrate::Yes,
"`#[rustc_as_ptr]` is used to mark functions returning pointers to their inner allocations"
),
rustc_attr!(
rustc_should_not_be_called_on_const_items, Normal, ErrorFollowing,
EncodeCrossCrate::Yes,
"`#[rustc_should_not_be_called_on_const_items]` is used to mark methods that don't make sense to be called on interior mutable consts"
),
rustc_attr!(
rustc_pass_by_value, Normal, ErrorFollowing,
EncodeCrossCrate::Yes,
"`#[rustc_pass_by_value]` is used to mark types that must be passed by value instead of reference"
),
rustc_attr!(
rustc_never_returns_null_ptr, Normal, ErrorFollowing,
EncodeCrossCrate::Yes,
"`#[rustc_never_returns_null_ptr]` is used to mark functions returning non-null pointers"
),
rustc_attr!(
rustc_no_implicit_autorefs, AttributeType::Normal, ErrorFollowing, EncodeCrossCrate::Yes,
"`#[rustc_no_implicit_autorefs]` is used to mark functions for which an autoref to the dereference of a raw pointer should not be used as an argument"
rustc_no_implicit_autorefs, AttributeType::Normal, ErrorFollowing,"`#[rustc_no_implicit_autorefs]` is used to mark functions for which an autoref to the dereference of a raw pointer should not be used as an argument"
),
rustc_attr!(
rustc_coherence_is_core, AttributeType::CrateLevel, ErrorFollowing, EncodeCrossCrate::No,
"`#![rustc_coherence_is_core]` allows inherent methods on builtin types, only intended to be used in `core`"
rustc_coherence_is_core, AttributeType::CrateLevel, ErrorFollowing,"`#![rustc_coherence_is_core]` allows inherent methods on builtin types, only intended to be used in `core`"
),
rustc_attr!(
rustc_coinductive, AttributeType::Normal, WarnFollowing, EncodeCrossCrate::No,
"`#[rustc_coinductive]` changes a trait to be coinductive, allowing cycles in the trait solver"
rustc_coinductive, AttributeType::Normal, WarnFollowing,"`#[rustc_coinductive]` changes a trait to be coinductive, allowing cycles in the trait solver"
),
rustc_attr!(
rustc_allow_incoherent_impl, AttributeType::Normal, ErrorFollowing, EncodeCrossCrate::No,
"`#[rustc_allow_incoherent_impl]` has to be added to all impl items of an incoherent inherent impl"
rustc_allow_incoherent_impl, AttributeType::Normal, ErrorFollowing,"`#[rustc_allow_incoherent_impl]` has to be added to all impl items of an incoherent inherent impl"
),
rustc_attr!(
rustc_preserve_ub_checks, AttributeType::CrateLevel, ErrorFollowing, EncodeCrossCrate::No,
"`#![rustc_preserve_ub_checks]` prevents the designated crate from evaluating whether UB checks are enabled when optimizing MIR",
rustc_preserve_ub_checks, AttributeType::CrateLevel, ErrorFollowing,"`#![rustc_preserve_ub_checks]` prevents the designated crate from evaluating whether UB checks are enabled when optimizing MIR",
),
rustc_attr!(
rustc_deny_explicit_impl,
AttributeType::Normal,
ErrorFollowing,
EncodeCrossCrate::No,
"`#[rustc_deny_explicit_impl]` enforces that a trait can have no user-provided impls"
ErrorFollowing,"`#[rustc_deny_explicit_impl]` enforces that a trait can have no user-provided impls"
),
rustc_attr!(
rustc_dyn_incompatible_trait,
AttributeType::Normal,
ErrorFollowing,
EncodeCrossCrate::No,
"`#[rustc_dyn_incompatible_trait]` marks a trait as dyn-incompatible, \
ErrorFollowing,"`#[rustc_dyn_incompatible_trait]` marks a trait as dyn-incompatible, \
even if it otherwise satisfies the requirements to be dyn-compatible."
),
rustc_attr!(
rustc_has_incoherent_inherent_impls, AttributeType::Normal,
ErrorFollowing, EncodeCrossCrate::Yes,
"`#[rustc_has_incoherent_inherent_impls]` allows the addition of incoherent inherent impls for \
ErrorFollowing,"`#[rustc_has_incoherent_inherent_impls]` allows the addition of incoherent inherent impls for \
the given type by annotating all impl items with `#[rustc_allow_incoherent_impl]`"
),
rustc_attr!(
rustc_non_const_trait_method, AttributeType::Normal,
ErrorFollowing, EncodeCrossCrate::No,
"`#[rustc_non_const_trait_method]` should only used by the standard library to mark trait methods \
ErrorFollowing,"`#[rustc_non_const_trait_method]` should only used by the standard library to mark trait methods \
as non-const to allow large traits an easier transition to const"
),
BuiltinAttribute {
name: sym::rustc_diagnostic_item,
// FIXME: This can be `true` once we always use `tcx.is_diagnostic_item`.
encode_cross_crate: EncodeCrossCrate::Yes,
type_: Normal,
safety: AttributeSafety::Normal,
duplicates: ErrorFollowing,
gate: Gated {
duplicates: ErrorFollowing,gate: Gated {
feature: sym::rustc_attrs,
message: "use of an internal attribute",
check: Features::rustc_attrs,
@@ -1172,209 +1085,190 @@ pub struct BuiltinAttribute {
},
gated!(
// Used in resolve:
prelude_import, Normal, WarnFollowing,
EncodeCrossCrate::No, "`#[prelude_import]` is for use by rustc only",
prelude_import, Normal, WarnFollowing, "`#[prelude_import]` is for use by rustc only",
),
gated!(
rustc_paren_sugar, Normal, WarnFollowing, EncodeCrossCrate::No,
unboxed_closures, "unboxed_closures are still evolving",
rustc_paren_sugar, Normal, WarnFollowing,unboxed_closures, "unboxed_closures are still evolving",
),
rustc_attr!(
rustc_inherit_overflow_checks, Normal, WarnFollowing, EncodeCrossCrate::No,
"the `#[rustc_inherit_overflow_checks]` attribute is just used to control \
rustc_inherit_overflow_checks, Normal, WarnFollowing,"the `#[rustc_inherit_overflow_checks]` attribute is just used to control \
overflow checking behavior of several functions in the standard library that are inlined \
across crates",
),
rustc_attr!(
rustc_reservation_impl, Normal,
ErrorFollowing, EncodeCrossCrate::Yes,
"the `#[rustc_reservation_impl]` attribute is internally used \
ErrorFollowing,"the `#[rustc_reservation_impl]` attribute is internally used \
for reserving `impl<T> From<!> for T` as part of the effort to stabilize `!`"
),
rustc_attr!(
rustc_test_marker, Normal, WarnFollowing,
EncodeCrossCrate::No, "the `#[rustc_test_marker]` attribute is used internally to track tests",
rustc_test_marker, Normal, WarnFollowing, "the `#[rustc_test_marker]` attribute is used internally to track tests",
),
rustc_attr!(
rustc_unsafe_specialization_marker, Normal,
WarnFollowing, EncodeCrossCrate::No,
"the `#[rustc_unsafe_specialization_marker]` attribute is used to check specializations"
WarnFollowing,"the `#[rustc_unsafe_specialization_marker]` attribute is used to check specializations"
),
rustc_attr!(
rustc_specialization_trait, Normal,
WarnFollowing, EncodeCrossCrate::No,
"the `#[rustc_specialization_trait]` attribute is used to check specializations"
WarnFollowing,"the `#[rustc_specialization_trait]` attribute is used to check specializations"
),
rustc_attr!(
rustc_main, Normal, WarnFollowing, EncodeCrossCrate::No,
"the `#[rustc_main]` attribute is used internally to specify test entry point function",
rustc_main, Normal, WarnFollowing,"the `#[rustc_main]` attribute is used internally to specify test entry point function",
),
rustc_attr!(
rustc_skip_during_method_dispatch, Normal, ErrorFollowing,
EncodeCrossCrate::No,
"the `#[rustc_skip_during_method_dispatch]` attribute is used to exclude a trait \
from method dispatch when the receiver is of the following type, for compatibility in \
editions < 2021 (array) or editions < 2024 (boxed_slice)"
),
rustc_attr!(
rustc_must_implement_one_of, Normal,
ErrorFollowing, EncodeCrossCrate::No,
"the `#[rustc_must_implement_one_of]` attribute is used to change minimal complete \
ErrorFollowing,"the `#[rustc_must_implement_one_of]` attribute is used to change minimal complete \
definition of a trait. Its syntax and semantics are highly experimental and will be \
subject to change before stabilization",
),
rustc_attr!(
rustc_doc_primitive, Normal, ErrorFollowing,
EncodeCrossCrate::Yes, "the `#[rustc_doc_primitive]` attribute is used by the standard library \
rustc_doc_primitive, Normal, ErrorFollowing, "the `#[rustc_doc_primitive]` attribute is used by the standard library \
to provide a way to generate documentation for primitive types",
),
gated!(
rustc_intrinsic, Normal, ErrorFollowing, EncodeCrossCrate::Yes, intrinsics,
rustc_intrinsic, Normal, ErrorFollowing, intrinsics,
"the `#[rustc_intrinsic]` attribute is used to declare intrinsics as function items",
),
rustc_attr!(
rustc_no_mir_inline, Normal, WarnFollowing, EncodeCrossCrate::Yes,
"`#[rustc_no_mir_inline]` prevents the MIR inliner from inlining a function while not affecting codegen"
rustc_no_mir_inline, Normal, WarnFollowing,"`#[rustc_no_mir_inline]` prevents the MIR inliner from inlining a function while not affecting codegen"
),
rustc_attr!(
rustc_force_inline, Normal, WarnFollowing, EncodeCrossCrate::Yes,
"`#[rustc_force_inline]` forces a free function to be inlined"
rustc_force_inline, Normal, WarnFollowing,"`#[rustc_force_inline]` forces a free function to be inlined"
),
rustc_attr!(
rustc_scalable_vector, Normal, WarnFollowing, EncodeCrossCrate::Yes,
"`#[rustc_scalable_vector]` defines a scalable vector type"
rustc_scalable_vector, Normal, WarnFollowing,"`#[rustc_scalable_vector]` defines a scalable vector type"
),
// ==========================================================================
// Internal attributes, Testing:
// ==========================================================================
rustc_attr!(TEST, rustc_effective_visibility, Normal, WarnFollowing, EncodeCrossCrate::Yes),
rustc_attr!(TEST, rustc_effective_visibility, Normal, WarnFollowing,),
rustc_attr!(
TEST, rustc_dump_inferred_outlives, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
rustc_attr!(
TEST, rustc_capture_analysis, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
rustc_attr!(
TEST, rustc_insignificant_dtor, Normal,
WarnFollowing, EncodeCrossCrate::Yes
WarnFollowing,
),
rustc_attr!(
TEST, rustc_no_implicit_bounds, CrateLevel,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
rustc_attr!(
TEST, rustc_strict_coherence, Normal,
WarnFollowing, EncodeCrossCrate::Yes
WarnFollowing,
),
rustc_attr!(
TEST, rustc_dump_variances, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
rustc_attr!(
TEST, rustc_dump_variances_of_opaques, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
rustc_attr!(
TEST, rustc_hidden_type_of_opaques, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
rustc_attr!(
TEST, rustc_layout, Normal,
WarnFollowing, EncodeCrossCrate::Yes
WarnFollowing,
),
rustc_attr!(
TEST, rustc_abi, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
rustc_attr!(
TEST, rustc_regions, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
rustc_attr!(
TEST, rustc_delayed_bug_from_inside_query, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
rustc_attr!(
TEST, rustc_dump_user_args, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
rustc_attr!(
TEST, rustc_evaluate_where_clauses, Normal, WarnFollowing,
EncodeCrossCrate::Yes
),
rustc_attr!(
TEST, rustc_if_this_changed, Normal, DuplicatesOk,
EncodeCrossCrate::No
),
rustc_attr!(
TEST, rustc_then_this_would_need, Normal, DuplicatesOk,
EncodeCrossCrate::No
),
rustc_attr!(
TEST, rustc_clean, Normal,
DuplicatesOk, EncodeCrossCrate::No
DuplicatesOk,
),
rustc_attr!(
TEST, rustc_partition_reused, Normal,
DuplicatesOk, EncodeCrossCrate::No
DuplicatesOk,
),
rustc_attr!(
TEST, rustc_partition_codegened, Normal,
DuplicatesOk, EncodeCrossCrate::No
DuplicatesOk,
),
rustc_attr!(
TEST, rustc_expected_cgu_reuse, Normal,
DuplicatesOk,
EncodeCrossCrate::No
),
rustc_attr!(
TEST, rustc_symbol_name, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
rustc_attr!(
TEST, rustc_def_path, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
rustc_attr!(
TEST, rustc_mir, Normal,
DuplicatesOk, EncodeCrossCrate::Yes
DuplicatesOk,
),
gated!(
custom_mir, Normal,
ErrorFollowing, EncodeCrossCrate::No,
"the `#[custom_mir]` attribute is just used for the Rust test suite",
ErrorFollowing,"the `#[custom_mir]` attribute is just used for the Rust test suite",
),
rustc_attr!(
TEST, rustc_dump_item_bounds, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
rustc_attr!(
TEST, rustc_dump_predicates, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
rustc_attr!(
TEST, rustc_dump_def_parents, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
rustc_attr!(
TEST, rustc_dump_object_lifetime_defaults, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
rustc_attr!(
TEST, rustc_dump_vtable, Normal,
WarnFollowing, EncodeCrossCrate::No
WarnFollowing,
),
rustc_attr!(
TEST, rustc_dummy, Normal,
DuplicatesOk, EncodeCrossCrate::No
DuplicatesOk,
),
rustc_attr!(
TEST, pattern_complexity_limit, CrateLevel,
ErrorFollowing, EncodeCrossCrate::No,
ErrorFollowing,
),
];
@@ -1382,16 +1276,6 @@ pub fn is_builtin_attr_name(name: Symbol) -> bool {
BUILTIN_ATTRIBUTE_MAP.get(&name).is_some()
}
/// Whether this builtin attribute is encoded cross crate.
/// This means it can be used cross crate.
pub fn encode_cross_crate(name: Symbol) -> bool {
if let Some(attr) = BUILTIN_ATTRIBUTE_MAP.get(&name) {
attr.encode_cross_crate == EncodeCrossCrate::Yes
} else {
true
}
}
pub fn is_valid_for_get_attr(name: Symbol) -> bool {
BUILTIN_ATTRIBUTE_MAP.get(&name).is_some_and(|attr| match attr.duplicates {
WarnFollowing | ErrorFollowing | ErrorPreceding | FutureWarnFollowing
compiler/rustc_feature/src/lib.rs
+1 -2
View File
@@ -131,8 +131,7 @@ pub fn find_feature_issue(feature: Symbol, issue: GateIssue) -> Option<NonZero<u
pub use builtin_attrs::{
AttrSuggestionStyle, AttributeDuplicates, AttributeGate, AttributeSafety, AttributeTemplate,
AttributeType, BUILTIN_ATTRIBUTE_MAP, BUILTIN_ATTRIBUTES, BuiltinAttribute, GatedCfg,
encode_cross_crate, find_gated_cfg, is_builtin_attr_name, is_stable_diagnostic_attribute,
is_valid_for_get_attr,
find_gated_cfg, is_builtin_attr_name, is_stable_diagnostic_attribute, is_valid_for_get_attr,
};
pub use removed::REMOVED_LANG_FEATURES;
pub use unstable::{
compiler/rustc_metadata/src/rmeta/encoder.rs
-4
View File
@@ -864,10 +864,6 @@ fn analyze_attr(attr: &hir::Attribute, state: &mut AnalyzeAttrState<'_>) -> bool
&& p.encode_cross_crate() == EncodeCrossCrate::No
{
// Attributes not marked encode-cross-crate don't need to be encoded for downstream crates.
} else if let Some(name) = attr.name()
&& !rustc_feature::encode_cross_crate(name)
{
// Attributes not marked encode-cross-crate don't need to be encoded for downstream crates.
} else if let hir::Attribute::Parsed(AttributeKind::DocComment { .. }) = attr {
// We keep all doc comments reachable to rustdoc because they might be "imported" into
// downstream crates if they use `#[doc(inline)]` to copy an item's documentation into