diff options
12 files changed, 123 insertions, 72 deletions
diff --git a/compiler/rustc_attr_data_structures/src/attributes.rs b/compiler/rustc_attr_data_structures/src/attributes.rs index ba62be676d4..84fb4f363d4 100644 --- a/compiler/rustc_attr_data_structures/src/attributes.rs +++ b/compiler/rustc_attr_data_structures/src/attributes.rs @@ -298,6 +298,9 @@ pub enum AttributeKind { /// Represents `#[rustc_pass_by_value]` (used by the `rustc_pass_by_value` lint). PassByValue(Span), + /// Represents `#[path]` + Path(Symbol, Span), + /// Represents `#[rustc_pub_transparent]` (used by the `repr_transparent_external_private_fields` lint). PubTransparent(Span), diff --git a/compiler/rustc_attr_data_structures/src/encode_cross_crate.rs b/compiler/rustc_attr_data_structures/src/encode_cross_crate.rs index b109ebbf47b..a6ae49d2808 100644 --- a/compiler/rustc_attr_data_structures/src/encode_cross_crate.rs +++ b/compiler/rustc_attr_data_structures/src/encode_cross_crate.rs @@ -40,6 +40,7 @@ impl AttributeKind { NonExhaustive(..) => Yes, Optimize(..) => No, PassByValue(..) => Yes, + Path(..) => No, PubTransparent(..) => Yes, Repr { .. } => No, RustcLayoutScalarValidRangeEnd(..) => Yes, diff --git a/compiler/rustc_attr_parsing/src/attributes/mod.rs b/compiler/rustc_attr_parsing/src/attributes/mod.rs index 55fbb825466..ba7572434df 100644 --- a/compiler/rustc_attr_parsing/src/attributes/mod.rs +++ b/compiler/rustc_attr_parsing/src/attributes/mod.rs @@ -37,6 +37,7 @@ pub(crate) mod loop_match; pub(crate) mod must_use; pub(crate) mod no_implicit_prelude; pub(crate) mod non_exhaustive; +pub(crate) mod path; pub(crate) mod repr; pub(crate) mod rustc_internal; pub(crate) mod semantics; diff --git a/compiler/rustc_attr_parsing/src/attributes/path.rs b/compiler/rustc_attr_parsing/src/attributes/path.rs new file mode 100644 index 00000000000..0dfbc9a9aa8 --- /dev/null +++ b/compiler/rustc_attr_parsing/src/attributes/path.rs @@ -0,0 +1,29 @@ +use rustc_attr_data_structures::AttributeKind; +use rustc_feature::{AttributeTemplate, template}; +use rustc_span::{Symbol, sym}; + +use crate::attributes::{AttributeOrder, OnDuplicate, SingleAttributeParser}; +use crate::context::{AcceptContext, Stage}; +use crate::parser::ArgParser; + +pub(crate) struct PathParser; + +impl<S: Stage> SingleAttributeParser<S> for PathParser { + const PATH: &[Symbol] = &[sym::path]; + const ATTRIBUTE_ORDER: AttributeOrder = AttributeOrder::KeepLast; + const ON_DUPLICATE: OnDuplicate<S> = OnDuplicate::WarnButFutureError; + const TEMPLATE: AttributeTemplate = template!(NameValueStr: "file"); + + fn convert(cx: &mut AcceptContext<'_, '_, S>, args: &ArgParser<'_>) -> Option<AttributeKind> { + let Some(nv) = args.name_value() else { + cx.expected_name_value(cx.attr_span, None); + return None; + }; + let Some(path) = nv.value_as_str() else { + cx.expected_string_literal(nv.value_span, Some(nv.value_as_lit())); + return None; + }; + + Some(AttributeKind::Path(path, cx.attr_span)) + } +} diff --git a/compiler/rustc_attr_parsing/src/context.rs b/compiler/rustc_attr_parsing/src/context.rs index bcd7b024a9e..939f4a6fde7 100644 --- a/compiler/rustc_attr_parsing/src/context.rs +++ b/compiler/rustc_attr_parsing/src/context.rs @@ -28,6 +28,7 @@ use crate::attributes::loop_match::{ConstContinueParser, LoopMatchParser}; use crate::attributes::must_use::MustUseParser; use crate::attributes::no_implicit_prelude::NoImplicitPreludeParser; use crate::attributes::non_exhaustive::NonExhaustiveParser; +use crate::attributes::path::PathParser as PathAttributeParser; use crate::attributes::repr::{AlignParser, ReprParser}; use crate::attributes::rustc_internal::{ RustcLayoutScalarValidRangeEnd, RustcLayoutScalarValidRangeStart, @@ -133,6 +134,7 @@ attribute_parsers!( Single<LinkSectionParser>, Single<MustUseParser>, Single<OptimizeParser>, + Single<PathAttributeParser>, Single<RustcForceInlineParser>, Single<RustcLayoutScalarValidRangeEnd>, Single<RustcLayoutScalarValidRangeStart>, diff --git a/compiler/rustc_parse/src/validate_attr.rs b/compiler/rustc_parse/src/validate_attr.rs index 8fdc06ee463..67b68e77d2b 100644 --- a/compiler/rustc_parse/src/validate_attr.rs +++ b/compiler/rustc_parse/src/validate_attr.rs @@ -267,6 +267,42 @@ pub fn check_builtin_meta_item( deny_unsafety: bool, ) { if !is_attr_template_compatible(&template, &meta.kind) { + // attrs with new parsers are locally validated so excluded here + if matches!( + name, + sym::inline + | sym::may_dangle + | sym::rustc_as_ptr + | sym::rustc_pub_transparent + | sym::rustc_const_stable_indirect + | sym::rustc_force_inline + | sym::rustc_confusables + | sym::rustc_skip_during_method_dispatch + | sym::rustc_pass_by_value + | sym::repr + | sym::align + | sym::deprecated + | sym::optimize + | sym::cold + | sym::target_feature + | sym::rustc_allow_const_fn_unstable + | sym::naked + | sym::no_mangle + | sym::non_exhaustive + | sym::path + | sym::ignore + | sym::must_use + | sym::track_caller + | sym::link_name + | sym::export_name + | sym::rustc_macro_transparency + | sym::link_section + | sym::rustc_layout_scalar_valid_range_start + | sym::rustc_layout_scalar_valid_range_end + | sym::no_implicit_prelude + ) { + return; + } emit_malformed_attribute(psess, style, meta.span, name, template); } @@ -282,42 +318,6 @@ fn emit_malformed_attribute( name: Symbol, template: AttributeTemplate, ) { - // attrs with new parsers are locally validated so excluded here - if matches!( - name, - sym::inline - | sym::may_dangle - | sym::rustc_as_ptr - | sym::rustc_pub_transparent - | sym::rustc_const_stable_indirect - | sym::rustc_force_inline - | sym::rustc_confusables - | sym::rustc_skip_during_method_dispatch - | sym::rustc_pass_by_value - | sym::repr - | sym::align - | sym::deprecated - | sym::optimize - | sym::cold - | sym::target_feature - | sym::rustc_allow_const_fn_unstable - | sym::naked - | sym::no_mangle - | sym::non_exhaustive - | sym::ignore - | sym::must_use - | sym::track_caller - | sym::link_name - | sym::export_name - | sym::rustc_macro_transparency - | sym::link_section - | sym::rustc_layout_scalar_valid_range_start - | sym::rustc_layout_scalar_valid_range_end - | sym::no_implicit_prelude - ) { - return; - } - // Some of previously accepted forms were used in practice, // report them as warnings for now. let should_warn = |name| matches!(name, sym::doc | sym::link | sym::test | sym::bench); diff --git a/compiler/rustc_passes/src/check_attr.rs b/compiler/rustc_passes/src/check_attr.rs index b8f1ec7ca93..fe9f80beaed 100644 --- a/compiler/rustc_passes/src/check_attr.rs +++ b/compiler/rustc_passes/src/check_attr.rs @@ -191,6 +191,9 @@ impl<'tcx> CheckAttrVisitor<'tcx> { target, Target::Mod, ), + Attribute::Parsed(AttributeKind::Path(_, attr_span)) => { + self.check_generic_attr(hir_id, sym::path, *attr_span, target, Target::Mod) + } Attribute::Parsed(AttributeKind::TrackCaller(attr_span)) => { self.check_track_caller(hir_id, *attr_span, attrs, span, target) } @@ -2797,7 +2800,6 @@ fn check_invalid_crate_level_attr(tcx: TyCtxt<'_>, attrs: &[Attribute]) { // resolution for the attribute macro error. const ATTRS_TO_CHECK: &[Symbol] = &[ sym::macro_export, - sym::path, sym::automatically_derived, sym::rustc_main, sym::derive, @@ -2819,6 +2821,8 @@ fn check_invalid_crate_level_attr(tcx: TyCtxt<'_>, attrs: &[Attribute]) { }) = attr { (*first_attr_span, sym::repr) + } else if let Attribute::Parsed(AttributeKind::Path(.., span)) = attr { + (*span, sym::path) } else { continue; }; diff --git a/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs-error.stderr b/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs-error.stderr index 1620bf72922..49c666f498f 100644 --- a/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs-error.stderr +++ b/tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs-error.stderr @@ -121,21 +121,6 @@ LL - #![rustc_main] LL + #[rustc_main] | -error: `path` attribute cannot be used at crate level - --> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:21:1 - | -LL | #![path = "3800"] - | ^^^^^^^^^^^^^^^^^ -... -LL | mod inline { - | ------ the inner attribute doesn't annotate this module - | -help: perhaps you meant to use an outer attribute - | -LL - #![path = "3800"] -LL + #[path = "3800"] - | - error: `automatically_derived` attribute cannot be used at crate level --> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:23:1 | @@ -166,6 +151,21 @@ LL - #![repr()] LL + #[repr()] | +error: `path` attribute cannot be used at crate level + --> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:21:1 + | +LL | #![path = "3800"] + | ^^^^^^^^^^^^^^^^^ +... +LL | mod inline { + | ------ the inner attribute doesn't annotate this module + | +help: perhaps you meant to use an outer attribute + | +LL - #![path = "3800"] +LL + #[path = "3800"] + | + error[E0518]: attribute should be applied to function or closure --> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:42:17 | diff --git a/tests/ui/lint/unused/unused-attr-duplicate.stderr b/tests/ui/lint/unused/unused-attr-duplicate.stderr index 275eb056305..2310c12c80b 100644 --- a/tests/ui/lint/unused/unused-attr-duplicate.stderr +++ b/tests/ui/lint/unused/unused-attr-duplicate.stderr @@ -28,19 +28,6 @@ LL | #[macro_use] | ^^^^^^^^^^^^ error: unused attribute - --> $DIR/unused-attr-duplicate.rs:47:1 - | -LL | #[path = "bar.rs"] - | ^^^^^^^^^^^^^^^^^^ help: remove this attribute - | -note: attribute also specified here - --> $DIR/unused-attr-duplicate.rs:46:1 - | -LL | #[path = "auxiliary/lint_unused_extern_crate.rs"] - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! - -error: unused attribute --> $DIR/unused-attr-duplicate.rs:55:1 | LL | #[should_panic(expected = "values don't match")] @@ -154,6 +141,19 @@ LL | #[macro_export] | ^^^^^^^^^^^^^^^ error: unused attribute + --> $DIR/unused-attr-duplicate.rs:47:1 + | +LL | #[path = "bar.rs"] + | ^^^^^^^^^^^^^^^^^^ help: remove this attribute + | +note: attribute also specified here + --> $DIR/unused-attr-duplicate.rs:46:1 + | +LL | #[path = "auxiliary/lint_unused_extern_crate.rs"] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + +error: unused attribute --> $DIR/unused-attr-duplicate.rs:53:1 | LL | #[ignore = "some text"] diff --git a/tests/ui/lint/unused/unused-attr-macro-rules.stderr b/tests/ui/lint/unused/unused-attr-macro-rules.stderr index e3ca90d9acd..4698e381425 100644 --- a/tests/ui/lint/unused/unused-attr-macro-rules.stderr +++ b/tests/ui/lint/unused/unused-attr-macro-rules.stderr @@ -10,17 +10,17 @@ note: the lint level is defined here LL | #![deny(unused_attributes)] | ^^^^^^^^^^^^^^^^^ -error: `#[path]` only has an effect on modules - --> $DIR/unused-attr-macro-rules.rs:8:1 - | -LL | #[path="foo"] - | ^^^^^^^^^^^^^ - error: crate-level attribute should be an inner attribute: add an exclamation mark: `#![foo]` --> $DIR/unused-attr-macro-rules.rs:9:1 | LL | #[recursion_limit="1"] | ^^^^^^^^^^^^^^^^^^^^^^ +error: `#[path]` only has an effect on modules + --> $DIR/unused-attr-macro-rules.rs:8:1 + | +LL | #[path="foo"] + | ^^^^^^^^^^^^^ + error: aborting due to 3 previous errors diff --git a/tests/ui/resolve/path-attr-in-const-block.rs b/tests/ui/resolve/path-attr-in-const-block.rs index 076511d26d6..69be65bda3f 100644 --- a/tests/ui/resolve/path-attr-in-const-block.rs +++ b/tests/ui/resolve/path-attr-in-const-block.rs @@ -5,5 +5,6 @@ fn main() { const { #![path = foo!()] //~^ ERROR: cannot find macro `foo` in this scope + //~| ERROR malformed `path` attribute input } } diff --git a/tests/ui/resolve/path-attr-in-const-block.stderr b/tests/ui/resolve/path-attr-in-const-block.stderr index 8f9e58157c8..0b5942a287d 100644 --- a/tests/ui/resolve/path-attr-in-const-block.stderr +++ b/tests/ui/resolve/path-attr-in-const-block.stderr @@ -4,5 +4,15 @@ error: cannot find macro `foo` in this scope LL | #![path = foo!()] | ^^^ -error: aborting due to 1 previous error +error[E0539]: malformed `path` attribute input + --> $DIR/path-attr-in-const-block.rs:6:9 + | +LL | #![path = foo!()] + | ^^^^^^^^^^------^ + | | | + | | expected a string literal here + | help: must be of the form: `#[path = "file"]` + +error: aborting due to 2 previous errors +For more information about this error, try `rustc --explain E0539`. |