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Rollup merge of #79185 - petrochenkov:derattr2, r=Aaron1011

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expand/resolve: Pre-requisites to "Turn `#[derive]` into a regular macro attribute"

Miscellaneous refactorings and error reporting changes extracted from https://github.com/rust-lang/rust/pull/79078.

Unlike https://github.com/rust-lang/rust/pull/79078 this PR doesn't make any observable changes to the language or library.
r? ```@Aaron1011```
This commit is contained in:
Dylan DPC 2020-11-19 23:58:42 +01:00 committed by GitHub
commit 8216b359e5
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33 changed files with 480 additions and 653 deletions
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11
compiler/rustc_builtin_macros/src/cfg_accessible.rs
View File

@ -1,7 +1,7 @@
//! Implementation of the `#[cfg_accessible(path)]` attribute macro.
use rustc_ast as ast;
use rustc_expand::base::{Annotatable, ExpandResult, ExtCtxt, MultiItemModifier};
use rustc_expand::base::{Annotatable, ExpandResult, ExtCtxt, Indeterminate, MultiItemModifier};
use rustc_feature::AttributeTemplate;
use rustc_parse::validate_attr;
use rustc_span::symbol::sym;
@ -31,7 +31,7 @@ impl MultiItemModifier for Expander {
fn expand(
&self,
ecx: &mut ExtCtxt<'_>,
_span: Span,
span: Span,
meta_item: &ast::MetaItem,
item: Annotatable,
) -> ExpandResult<Vec<Annotatable>, Annotatable> {
@ -49,11 +49,14 @@ impl MultiItemModifier for Expander {
None => return ExpandResult::Ready(Vec::new()),
};
let failure_msg = "cannot determine whether the path is accessible or not";
match ecx.resolver.cfg_accessible(ecx.current_expansion.id, path) {
Ok(true) => ExpandResult::Ready(vec![item]),
Ok(false) => ExpandResult::Ready(Vec::new()),
Err(_) => ExpandResult::Retry(item, failure_msg.into()),
Err(Indeterminate) if ecx.force_mode => {
ecx.span_err(span, "cannot determine whether the path is accessible or not");
ExpandResult::Ready(vec![item])
}
Err(Indeterminate) => ExpandResult::Retry(item),
}
}
}

15
compiler/rustc_builtin_macros/src/deriving/generic/mod.rs
View File

@ -407,13 +407,7 @@ impl<'a> TraitDef<'a> {
_ => false,
})
}
_ => {
// Non-ADT derive is an error, but it should have been
// set earlier; see
// librustc_expand/expand.rs:MacroExpander::fully_expand_fragment()
// librustc_expand/base.rs:Annotatable::derive_allowed()
return;
}
_ => unreachable!(),
};
let container_id = cx.current_expansion.id.expn_data().parent;
let always_copy = has_no_type_params && cx.resolver.has_derive_copy(container_id);
@ -475,12 +469,7 @@ impl<'a> TraitDef<'a> {
);
push(Annotatable::Item(P(ast::Item { attrs, ..(*newitem).clone() })))
}
_ => {
// Non-Item derive is an error, but it should have been
// set earlier; see
// librustc_expand/expand.rs:MacroExpander::fully_expand_fragment()
// librustc_expand/base.rs:Annotatable::derive_allowed()
}
_ => unreachable!(),
}
}

8
compiler/rustc_builtin_macros/src/deriving/mod.rs
View File

@ -98,13 +98,7 @@ fn inject_impl_of_structural_trait(
) {
let item = match *item {
Annotatable::Item(ref item) => item,
_ => {
// Non-Item derive is an error, but it should have been
// set earlier; see
// librustc_expand/expand.rs:MacroExpander::fully_expand_fragment()
// librustc_expand/base.rs:Annotatable::derive_allowed()
return;
}
_ => unreachable!(),
};
let generics = match item.kind {

11
compiler/rustc_expand/src/base.rs
View File

@ -251,8 +251,7 @@ pub enum ExpandResult<T, U> {
/// Expansion produced a result (possibly dummy).
Ready(T),
/// Expansion could not produce a result and needs to be retried.
/// The string is an explanation that will be printed if we are stuck in an infinite retry loop.
Retry(U, String),
Retry(U),
}
// `meta_item` is the attribute, and `item` is the item being modified.
@ -889,8 +888,10 @@ pub trait ResolverExpand {
/// Some parent node that is close enough to the given macro call.
fn lint_node_id(&mut self, expn_id: ExpnId) -> NodeId;
// Resolver interfaces for specific built-in macros.
/// Does `#[derive(...)]` attribute with the given `ExpnId` have built-in `Copy` inside it?
fn has_derive_copy(&self, expn_id: ExpnId) -> bool;
fn add_derive_copy(&mut self, expn_id: ExpnId);
/// Path resolution logic for `#[cfg_accessible(path)]`.
fn cfg_accessible(&mut self, expn_id: ExpnId, path: &ast::Path) -> Result<bool, Indeterminate>;
}
@ -919,6 +920,9 @@ pub struct ExtCtxt<'a> {
pub root_path: PathBuf,
pub resolver: &'a mut dyn ResolverExpand,
pub current_expansion: ExpansionData,
/// Error recovery mode entered when expansion is stuck
/// (or during eager expansion, but that's a hack).
pub force_mode: bool,
pub expansions: FxHashMap<Span, Vec<String>>,
/// Called directly after having parsed an external `mod foo;` in expansion.
pub(super) extern_mod_loaded: Option<&'a dyn Fn(&ast::Crate)>,
@ -945,6 +949,7 @@ impl<'a> ExtCtxt<'a> {
directory_ownership: DirectoryOwnership::Owned { relative: None },
prior_type_ascription: None,
},
force_mode: false,
expansions: FxHashMap::default(),
}
}

45
compiler/rustc_expand/src/config.rs
View File

@ -1,5 +1,7 @@
//! Conditional compilation stripping.
use crate::base::Annotatable;
use rustc_ast::attr::HasAttrs;
use rustc_ast::mut_visit::*;
use rustc_ast::ptr::P;
@ -496,6 +498,49 @@ impl<'a> StripUnconfigured<'a> {
pub fn configure_fn_decl(&mut self, fn_decl: &mut ast::FnDecl) {
fn_decl.inputs.flat_map_in_place(|arg| self.configure(arg));
}
pub fn fully_configure(&mut self, item: Annotatable) -> Annotatable {
// Since the item itself has already been configured by the InvocationCollector,
// we know that fold result vector will contain exactly one element
match item {
Annotatable::Item(item) => Annotatable::Item(self.flat_map_item(item).pop().unwrap()),
Annotatable::TraitItem(item) => {
Annotatable::TraitItem(self.flat_map_trait_item(item).pop().unwrap())
}
Annotatable::ImplItem(item) => {
Annotatable::ImplItem(self.flat_map_impl_item(item).pop().unwrap())
}
Annotatable::ForeignItem(item) => {
Annotatable::ForeignItem(self.flat_map_foreign_item(item).pop().unwrap())
}
Annotatable::Stmt(stmt) => {
Annotatable::Stmt(stmt.map(|stmt| self.flat_map_stmt(stmt).pop().unwrap()))
}
Annotatable::Expr(mut expr) => Annotatable::Expr({
self.visit_expr(&mut expr);
expr
}),
Annotatable::Arm(arm) => Annotatable::Arm(self.flat_map_arm(arm).pop().unwrap()),
Annotatable::Field(field) => {
Annotatable::Field(self.flat_map_field(field).pop().unwrap())
}
Annotatable::FieldPat(fp) => {
Annotatable::FieldPat(self.flat_map_field_pattern(fp).pop().unwrap())
}
Annotatable::GenericParam(param) => {
Annotatable::GenericParam(self.flat_map_generic_param(param).pop().unwrap())
}
Annotatable::Param(param) => {
Annotatable::Param(self.flat_map_param(param).pop().unwrap())
}
Annotatable::StructField(sf) => {
Annotatable::StructField(self.flat_map_struct_field(sf).pop().unwrap())
}
Annotatable::Variant(v) => {
Annotatable::Variant(self.flat_map_variant(v).pop().unwrap())
}
}
}
}
impl<'a> MutVisitor for StripUnconfigured<'a> {

381
compiler/rustc_expand/src/expand.rs
View File

@ -209,6 +209,28 @@ impl AstFragmentKind {
self.make_from(DummyResult::any(span)).expect("couldn't create a dummy AST fragment")
}
/// Fragment supports macro expansion and not just inert attributes, `cfg` and `cfg_attr`.
pub fn supports_macro_expansion(self) -> bool {
match self {
AstFragmentKind::OptExpr
| AstFragmentKind::Expr
| AstFragmentKind::Pat
| AstFragmentKind::Ty
| AstFragmentKind::Stmts
| AstFragmentKind::Items
| AstFragmentKind::TraitItems
| AstFragmentKind::ImplItems
| AstFragmentKind::ForeignItems => true,
AstFragmentKind::Arms
| AstFragmentKind::Fields
| AstFragmentKind::FieldPats
| AstFragmentKind::GenericParams
| AstFragmentKind::Params
| AstFragmentKind::StructFields
| AstFragmentKind::Variants => false,
}
}
fn expect_from_annotatables<I: IntoIterator<Item = Annotatable>>(
self,
items: I,
@ -404,6 +426,7 @@ impl<'a, 'b> MacroExpander<'a, 'b> {
// Recursively expand all macro invocations in this AST fragment.
pub fn fully_expand_fragment(&mut self, input_fragment: AstFragment) -> AstFragment {
let orig_expansion_data = self.cx.current_expansion.clone();
let orig_force_mode = self.cx.force_mode;
self.cx.current_expansion.depth = 0;
// Collect all macro invocations and replace them with placeholders.
@ -432,6 +455,12 @@ impl<'a, 'b> MacroExpander<'a, 'b> {
}
invocations = mem::take(&mut undetermined_invocations);
force = !mem::replace(&mut progress, false);
if force && self.monotonic {
self.cx.sess.delay_span_bug(
invocations.last().unwrap().0.span(),
"expansion entered force mode without producing any errors",
);
}
continue;
};
@ -460,18 +489,19 @@ impl<'a, 'b> MacroExpander<'a, 'b> {
let ExpansionData { depth, id: expn_id, .. } = invoc.expansion_data;
self.cx.current_expansion = invoc.expansion_data.clone();
self.cx.force_mode = force;
// FIXME(jseyfried): Refactor out the following logic
let fragment_kind = invoc.fragment_kind;
let (expanded_fragment, new_invocations) = match res {
InvocationRes::Single(ext) => match self.expand_invoc(invoc, &ext.kind) {
ExpandResult::Ready(fragment) => self.collect_invocations(fragment, &[]),
ExpandResult::Retry(invoc, explanation) => {
ExpandResult::Retry(invoc) => {
if force {
// We are stuck, stop retrying and produce a dummy fragment.
let span = invoc.span();
self.cx.span_err(span, &explanation);
let fragment = invoc.fragment_kind.dummy(span);
self.collect_invocations(fragment, &[])
self.cx.span_bug(
invoc.span(),
"expansion entered force mode but is still stuck",
);
} else {
// Cannot expand, will retry this invocation later.
undetermined_invocations
@ -483,36 +513,45 @@ impl<'a, 'b> MacroExpander<'a, 'b> {
InvocationRes::DeriveContainer(_exts) => {
// FIXME: Consider using the derive resolutions (`_exts`) immediately,
// instead of enqueuing the derives to be resolved again later.
let (derives, item) = match invoc.kind {
let (derives, mut item) = match invoc.kind {
InvocationKind::DeriveContainer { derives, item } => (derives, item),
_ => unreachable!(),
};
if !item.derive_allowed() {
let (item, derive_placeholders) = if !item.derive_allowed() {
self.error_derive_forbidden_on_non_adt(&derives, &item);
}
item.visit_attrs(|attrs| attrs.retain(|a| !a.has_name(sym::derive)));
(item, Vec::new())
} else {
let mut item = StripUnconfigured {
sess: self.cx.sess,
features: self.cx.ecfg.features,
}
.fully_configure(item);
item.visit_attrs(|attrs| attrs.retain(|a| !a.has_name(sym::derive)));
let mut item = self.fully_configure(item);
item.visit_attrs(|attrs| attrs.retain(|a| !a.has_name(sym::derive)));
invocations.reserve(derives.len());
let derive_placeholders = derives
.into_iter()
.map(|path| {
let expn_id = ExpnId::fresh(None);
invocations.push((
Invocation {
kind: InvocationKind::Derive { path, item: item.clone() },
fragment_kind,
expansion_data: ExpansionData {
id: expn_id,
..self.cx.current_expansion.clone()
},
},
None,
));
NodeId::placeholder_from_expn_id(expn_id)
})
.collect::<Vec<_>>();
(item, derive_placeholders)
};
let mut derive_placeholders = Vec::with_capacity(derives.len());
invocations.reserve(derives.len());
for path in derives {
let expn_id = ExpnId::fresh(None);
derive_placeholders.push(NodeId::placeholder_from_expn_id(expn_id));
invocations.push((
Invocation {
kind: InvocationKind::Derive { path, item: item.clone() },
fragment_kind: invoc.fragment_kind,
expansion_data: ExpansionData {
id: expn_id,
..invoc.expansion_data.clone()
},
},
None,
));
}
let fragment =
invoc.fragment_kind.expect_from_annotatables(::std::iter::once(item));
let fragment = fragment_kind.expect_from_annotatables(::std::iter::once(item));
self.collect_invocations(fragment, &derive_placeholders)
}
};
@ -526,6 +565,7 @@ impl<'a, 'b> MacroExpander<'a, 'b> {
}
self.cx.current_expansion = orig_expansion_data;
self.cx.force_mode = orig_force_mode;
// Finally incorporate all the expanded macros into the input AST fragment.
let mut placeholder_expander = PlaceholderExpander::new(self.cx, self.monotonic);
@ -601,48 +641,6 @@ impl<'a, 'b> MacroExpander<'a, 'b> {
(fragment, invocations)
}
fn fully_configure(&mut self, item: Annotatable) -> Annotatable {
let mut cfg = StripUnconfigured { sess: &self.cx.sess, features: self.cx.ecfg.features };
// Since the item itself has already been configured by the InvocationCollector,
// we know that fold result vector will contain exactly one element
match item {
Annotatable::Item(item) => Annotatable::Item(cfg.flat_map_item(item).pop().unwrap()),
Annotatable::TraitItem(item) => {
Annotatable::TraitItem(cfg.flat_map_trait_item(item).pop().unwrap())
}
Annotatable::ImplItem(item) => {
Annotatable::ImplItem(cfg.flat_map_impl_item(item).pop().unwrap())
}
Annotatable::ForeignItem(item) => {
Annotatable::ForeignItem(cfg.flat_map_foreign_item(item).pop().unwrap())
}
Annotatable::Stmt(stmt) => {
Annotatable::Stmt(stmt.map(|stmt| cfg.flat_map_stmt(stmt).pop().unwrap()))
}
Annotatable::Expr(mut expr) => Annotatable::Expr({
cfg.visit_expr(&mut expr);
expr
}),
Annotatable::Arm(arm) => Annotatable::Arm(cfg.flat_map_arm(arm).pop().unwrap()),
Annotatable::Field(field) => {
Annotatable::Field(cfg.flat_map_field(field).pop().unwrap())
}
Annotatable::FieldPat(fp) => {
Annotatable::FieldPat(cfg.flat_map_field_pattern(fp).pop().unwrap())
}
Annotatable::GenericParam(param) => {
Annotatable::GenericParam(cfg.flat_map_generic_param(param).pop().unwrap())
}
Annotatable::Param(param) => {
Annotatable::Param(cfg.flat_map_param(param).pop().unwrap())
}
Annotatable::StructField(sf) => {
Annotatable::StructField(cfg.flat_map_struct_field(sf).pop().unwrap())
}
Annotatable::Variant(v) => Annotatable::Variant(cfg.flat_map_variant(v).pop().unwrap()),
}
}
fn error_recursion_limit_reached(&mut self) {
let expn_data = self.cx.current_expansion.id.expn_data();
let suggested_limit = self.cx.ecfg.recursion_limit * 2;
@ -735,20 +733,17 @@ impl<'a, 'b> MacroExpander<'a, 'b> {
Ok(meta) => {
let items = match expander.expand(self.cx, span, &meta, item) {
ExpandResult::Ready(items) => items,
ExpandResult::Retry(item, explanation) => {
ExpandResult::Retry(item) => {
// Reassemble the original invocation for retrying.
return ExpandResult::Retry(
Invocation {
kind: InvocationKind::Attr {
attr,
item,
derives,
after_derive,
},
..invoc
return ExpandResult::Retry(Invocation {
kind: InvocationKind::Attr {
attr,
item,
derives,
after_derive,
},
explanation,
);
..invoc
});
}
};
fragment_kind.expect_from_annotatables(items)
@ -772,24 +767,18 @@ impl<'a, 'b> MacroExpander<'a, 'b> {
InvocationKind::Derive { path, item } => match ext {
SyntaxExtensionKind::Derive(expander)
| SyntaxExtensionKind::LegacyDerive(expander) => {
if !item.derive_allowed() {
return ExpandResult::Ready(fragment_kind.dummy(span));
}
if let SyntaxExtensionKind::Derive(..) = ext {
self.gate_proc_macro_input(&item);
}
let meta = ast::MetaItem { kind: ast::MetaItemKind::Word, span, path };
let items = match expander.expand(self.cx, span, &meta, item) {
ExpandResult::Ready(items) => items,
ExpandResult::Retry(item, explanation) => {
ExpandResult::Retry(item) => {
// Reassemble the original invocation for retrying.
return ExpandResult::Retry(
Invocation {
kind: InvocationKind::Derive { path: meta.path, item },
..invoc
},
explanation,
);
return ExpandResult::Retry(Invocation {
kind: InvocationKind::Derive { path: meta.path, item },
..invoc
});
}
};
fragment_kind.expect_from_annotatables(items)
@ -1034,11 +1023,9 @@ impl<'a, 'b> InvocationCollector<'a, 'b> {
fn collect_attr(
&mut self,
attr: Option<ast::Attribute>,
derives: Vec<Path>,
(attr, derives, after_derive): (Option<ast::Attribute>, Vec<Path>, bool),
item: Annotatable,
kind: AstFragmentKind,
after_derive: bool,
) -> AstFragment {
self.collect(
kind,
@ -1054,7 +1041,7 @@ impl<'a, 'b> InvocationCollector<'a, 'b> {
attrs: &mut Vec<ast::Attribute>,
after_derive: &mut bool,
) -> Option<ast::Attribute> {
let attr = attrs
attrs
.iter()
.position(|a| {
if a.has_name(sym::derive) {
@ -1062,29 +1049,14 @@ impl<'a, 'b> InvocationCollector<'a, 'b> {
}
!self.cx.sess.is_attr_known(a) && !is_builtin_attr(a)
})
.map(|i| attrs.remove(i));
if let Some(attr) = &attr {
if !self.cx.ecfg.custom_inner_attributes()
&& attr.style == ast::AttrStyle::Inner
&& !attr.has_name(sym::test)
{
feature_err(
&self.cx.sess.parse_sess,
sym::custom_inner_attributes,
attr.span,
"non-builtin inner attributes are unstable",
)
.emit();
}
}
attr
.map(|i| attrs.remove(i))
}
/// If `item` is an attr invocation, remove and return the macro attribute and derive traits.
fn classify_item(
fn take_first_attr(
&mut self,
item: &mut impl HasAttrs,
) -> (Option<ast::Attribute>, Vec<Path>, /* after_derive */ bool) {
) -> Option<(Option<ast::Attribute>, Vec<Path>, /* after_derive */ bool)> {
let (mut attr, mut traits, mut after_derive) = (None, Vec::new(), false);
item.visit_attrs(|mut attrs| {
@ -1092,23 +1064,23 @@ impl<'a, 'b> InvocationCollector<'a, 'b> {
traits = collect_derives(&mut self.cx, &mut attrs);
});
(attr, traits, after_derive)
if attr.is_some() || !traits.is_empty() { Some((attr, traits, after_derive)) } else { None }
}
/// Alternative to `classify_item()` that ignores `#[derive]` so invocations fallthrough
/// Alternative to `take_first_attr()` that ignores `#[derive]` so invocations fallthrough
/// to the unused-attributes lint (making it an error on statements and expressions
/// is a breaking change)
fn classify_nonitem(
fn take_first_attr_no_derive(
&mut self,
nonitem: &mut impl HasAttrs,
) -> (Option<ast::Attribute>, /* after_derive */ bool) {
) -> Option<(Option<ast::Attribute>, Vec<Path>, /* after_derive */ bool)> {
let (mut attr, mut after_derive) = (None, false);
nonitem.visit_attrs(|mut attrs| {
attr = self.find_attr_invoc(&mut attrs, &mut after_derive);
});
(attr, after_derive)
attr.map(|attr| (Some(attr), Vec::new(), after_derive))
}
fn configure<T: HasAttrs>(&mut self, node: T) -> Option<T> {
@ -1152,23 +1124,14 @@ impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b> {
visit_clobber(expr.deref_mut(), |mut expr| {
self.cfg.configure_expr_kind(&mut expr.kind);
// ignore derives so they remain unused
let (attr, after_derive) = self.classify_nonitem(&mut expr);
if let Some(ref attr_value) = attr {
if let Some(attr) = self.take_first_attr_no_derive(&mut expr) {
// Collect the invoc regardless of whether or not attributes are permitted here
// expansion will eat the attribute so it won't error later.
self.cfg.maybe_emit_expr_attr_err(attr_value);
attr.0.as_ref().map(|attr| self.cfg.maybe_emit_expr_attr_err(attr));
// AstFragmentKind::Expr requires the macro to emit an expression.
return self
.collect_attr(
attr,
vec![],
Annotatable::Expr(P(expr)),
AstFragmentKind::Expr,
after_derive,
)
.collect_attr(attr, Annotatable::Expr(P(expr)), AstFragmentKind::Expr)
.make_expr()
.into_inner();
}
@ -1186,16 +1149,9 @@ impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b> {
fn flat_map_arm(&mut self, arm: ast::Arm) -> SmallVec<[ast::Arm; 1]> {
let mut arm = configure!(self, arm);
let (attr, traits, after_derive) = self.classify_item(&mut arm);
if attr.is_some() || !traits.is_empty() {
if let Some(attr) = self.take_first_attr(&mut arm) {
return self
.collect_attr(
attr,
traits,
Annotatable::Arm(arm),
AstFragmentKind::Arms,
after_derive,
)
.collect_attr(attr, Annotatable::Arm(arm), AstFragmentKind::Arms)
.make_arms();
}
@ -1205,16 +1161,9 @@ impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b> {
fn flat_map_field(&mut self, field: ast::Field) -> SmallVec<[ast::Field; 1]> {
let mut field = configure!(self, field);
let (attr, traits, after_derive) = self.classify_item(&mut field);
if attr.is_some() || !traits.is_empty() {
if let Some(attr) = self.take_first_attr(&mut field) {
return self
.collect_attr(
attr,
traits,
Annotatable::Field(field),
AstFragmentKind::Fields,
after_derive,
)
.collect_attr(attr, Annotatable::Field(field), AstFragmentKind::Fields)
.make_fields();
}
@ -1224,16 +1173,9 @@ impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b> {
fn flat_map_field_pattern(&mut self, fp: ast::FieldPat) -> SmallVec<[ast::FieldPat; 1]> {
let mut fp = configure!(self, fp);
let (attr, traits, after_derive) = self.classify_item(&mut fp);
if attr.is_some() || !traits.is_empty() {
if let Some(attr) = self.take_first_attr(&mut fp) {
return self
.collect_attr(
attr,
traits,
Annotatable::FieldPat(fp),
AstFragmentKind::FieldPats,
after_derive,
)
.collect_attr(attr, Annotatable::FieldPat(fp), AstFragmentKind::FieldPats)
.make_field_patterns();
}
@ -1243,16 +1185,9 @@ impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b> {
fn flat_map_param(&mut self, p: ast::Param) -> SmallVec<[ast::Param; 1]> {
let mut p = configure!(self, p);
let (attr, traits, after_derive) = self.classify_item(&mut p);
if attr.is_some() || !traits.is_empty() {
if let Some(attr) = self.take_first_attr(&mut p) {
return self
.collect_attr(
attr,
traits,
Annotatable::Param(p),
AstFragmentKind::Params,
after_derive,
)
.collect_attr(attr, Annotatable::Param(p), AstFragmentKind::Params)
.make_params();
}
@ -1262,16 +1197,9 @@ impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b> {
fn flat_map_struct_field(&mut self, sf: ast::StructField) -> SmallVec<[ast::StructField; 1]> {
let mut sf = configure!(self, sf);
let (attr, traits, after_derive) = self.classify_item(&mut sf);
if attr.is_some() || !traits.is_empty() {
if let Some(attr) = self.take_first_attr(&mut sf) {
return self
.collect_attr(
attr,
traits,
Annotatable::StructField(sf),
AstFragmentKind::StructFields,
after_derive,
)
.collect_attr(attr, Annotatable::StructField(sf), AstFragmentKind::StructFields)
.make_struct_fields();
}
@ -1281,16 +1209,9 @@ impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b> {
fn flat_map_variant(&mut self, variant: ast::Variant) -> SmallVec<[ast::Variant; 1]> {
let mut variant = configure!(self, variant);
let (attr, traits, after_derive) = self.classify_item(&mut variant);
if attr.is_some() || !traits.is_empty() {
if let Some(attr) = self.take_first_attr(&mut variant) {
return self
.collect_attr(
attr,
traits,
Annotatable::Variant(variant),
AstFragmentKind::Variants,
after_derive,
)
.collect_attr(attr, Annotatable::Variant(variant), AstFragmentKind::Variants)
.make_variants();
}
@ -1302,20 +1223,11 @@ impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b> {
expr.filter_map(|mut expr| {
self.cfg.configure_expr_kind(&mut expr.kind);
// Ignore derives so they remain unused.
let (attr, after_derive) = self.classify_nonitem(&mut expr);
if let Some(ref attr_value) = attr {
self.cfg.maybe_emit_expr_attr_err(attr_value);
if let Some(attr) = self.take_first_attr_no_derive(&mut expr) {
attr.0.as_ref().map(|attr| self.cfg.maybe_emit_expr_attr_err(attr));
return self
.collect_attr(
attr,
vec![],
Annotatable::Expr(P(expr)),
AstFragmentKind::OptExpr,
after_derive,
)
.collect_attr(attr, Annotatable::Expr(P(expr)), AstFragmentKind::OptExpr)
.make_opt_expr()
.map(|expr| expr.into_inner());
}
@ -1354,25 +1266,13 @@ impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b> {
// we'll expand attributes on expressions separately
if !stmt.is_expr() {
let (attr, derives, after_derive) = if stmt.is_item() {
// FIXME: Handle custom attributes on statements (#15701)
(None, vec![], false)
} else {
// ignore derives on non-item statements so it falls through
// to the unused-attributes lint
let (attr, after_derive) = self.classify_nonitem(&mut stmt);
(attr, vec![], after_derive)
};
// FIXME: Handle custom attributes on statements (#15701).
let attr =
if stmt.is_item() { None } else { self.take_first_attr_no_derive(&mut stmt) };
if attr.is_some() || !derives.is_empty() {
if let Some(attr) = attr {
return self
.collect_attr(
attr,
derives,
Annotatable::Stmt(P(stmt)),
AstFragmentKind::Stmts,
after_derive,
)
.collect_attr(attr, Annotatable::Stmt(P(stmt)), AstFragmentKind::Stmts)
.make_stmts();
}
}
@ -1412,16 +1312,9 @@ impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b> {
fn flat_map_item(&mut self, item: P<ast::Item>) -> SmallVec<[P<ast::Item>; 1]> {
let mut item = configure!(self, item);
let (attr, traits, after_derive) = self.classify_item(&mut item);
if attr.is_some() || !traits.is_empty() {
if let Some(attr) = self.take_first_attr(&mut item) {
return self
.collect_attr(
attr,
traits,
Annotatable::Item(item),
AstFragmentKind::Items,
after_derive,
)
.collect_attr(attr, Annotatable::Item(item), AstFragmentKind::Items)
.make_items();
}
@ -1515,16 +1408,9 @@ impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b> {
fn flat_map_trait_item(&mut self, item: P<ast::AssocItem>) -> SmallVec<[P<ast::AssocItem>; 1]> {
let mut item = configure!(self, item);
let (attr, traits, after_derive) = self.classify_item(&mut item);
if attr.is_some() || !traits.is_empty() {
if let Some(attr) = self.take_first_attr(&mut item) {
return self
.collect_attr(
attr,
traits,
Annotatable::TraitItem(item),
AstFragmentKind::TraitItems,
after_derive,
)
.collect_attr(attr, Annotatable::TraitItem(item), AstFragmentKind::TraitItems)
.make_trait_items();
}
@ -1545,16 +1431,9 @@ impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b> {
fn flat_map_impl_item(&mut self, item: P<ast::AssocItem>) -> SmallVec<[P<ast::AssocItem>; 1]> {
let mut item = configure!(self, item);
let (attr, traits, after_derive) = self.classify_item(&mut item);
if attr.is_some() || !traits.is_empty() {
if let Some(attr) = self.take_first_attr(&mut item) {
return self
.collect_attr(
attr,
traits,
Annotatable::ImplItem(item),
AstFragmentKind::ImplItems,
after_derive,
)
.collect_attr(attr, Annotatable::ImplItem(item), AstFragmentKind::ImplItems)
.make_impl_items();
}
@ -1595,16 +1474,12 @@ impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b> {
&mut self,
mut foreign_item: P<ast::ForeignItem>,
) -> SmallVec<[P<ast::ForeignItem>; 1]> {
let (attr, traits, after_derive) = self.classify_item(&mut foreign_item);
if attr.is_some() || !traits.is_empty() {
if let Some(attr) = self.take_first_attr(&mut foreign_item) {
return self
.collect_attr(
attr,
traits,
Annotatable::ForeignItem(foreign_item),
AstFragmentKind::ForeignItems,
after_derive,
)
.make_foreign_items();
}
@ -1639,15 +1514,12 @@ impl<'a, 'b> MutVisitor for InvocationCollector<'a, 'b> {
) -> SmallVec<[ast::GenericParam; 1]> {
let mut param = configure!(self, param);
let (attr, traits, after_derive) = self.classify_item(&mut param);
if attr.is_some() || !traits.is_empty() {
if let Some(attr) = self.take_first_attr(&mut param) {
return self
.collect_attr(
attr,
traits,
Annotatable::GenericParam(param),
AstFragmentKind::GenericParams,
after_derive,
)
.make_generic_params();
}
@ -1830,7 +1702,4 @@ impl<'feat> ExpansionConfig<'feat> {
fn proc_macro_hygiene(&self) -> bool {
self.features.map_or(false, |features| features.proc_macro_hygiene)
}
fn custom_inner_attributes(&self) -> bool {
self.features.map_or(false, |features| features.custom_inner_attributes)
}
}

33
compiler/rustc_expand/src/proc_macro.rs
View File

@ -75,38 +75,9 @@ impl MultiItemModifier for ProcMacroDerive {
item: Annotatable,
) -> ExpandResult<Vec<Annotatable>, Annotatable> {
let item = match item {
Annotatable::Arm(..)
| Annotatable::Field(..)
| Annotatable::FieldPat(..)
| Annotatable::GenericParam(..)
| Annotatable::Param(..)
| Annotatable::StructField(..)
| Annotatable::Variant(..) => panic!("unexpected annotatable"),
Annotatable::Item(item) => item,
Annotatable::ImplItem(_)
| Annotatable::TraitItem(_)
| Annotatable::ForeignItem(_)
| Annotatable::Stmt(_)
| Annotatable::Expr(_) => {
ecx.span_err(
span,
"proc-macro derives may only be applied to a struct, enum, or union",
);
return ExpandResult::Ready(Vec::new());
}
Annotatable::Item(item) => token::NtItem(item),
_ => unreachable!(),
};
match item.kind {
ItemKind::Struct(..) | ItemKind::Enum(..) | ItemKind::Union(..) => {}
_ => {
ecx.span_err(
span,
"proc-macro derives may only be applied to a struct, enum, or union",
);
return ExpandResult::Ready(Vec::new());
}
}
let item = token::NtItem(item);
let input = if item.pretty_printing_compatibility_hack() {
TokenTree::token(token::Interpolated(Lrc::new(item)), DUMMY_SP).into()
} else {

11
compiler/rustc_hir/src/def.rs
View File

@ -39,6 +39,9 @@ pub enum NonMacroAttrKind {
Tool,
/// Single-segment custom attribute registered by a derive macro (`#[serde(default)]`).
DeriveHelper,
/// Single-segment custom attribute registered by a derive macro
/// but used before that derive macro was expanded (deprecated).
DeriveHelperCompat,
/// Single-segment custom attribute registered with `#[register_attr]`.
Registered,
}
@ -370,7 +373,9 @@ impl NonMacroAttrKind {
match self {
NonMacroAttrKind::Builtin => "built-in attribute",
NonMacroAttrKind::Tool => "tool attribute",
NonMacroAttrKind::DeriveHelper => "derive helper attribute",
NonMacroAttrKind::DeriveHelper | NonMacroAttrKind::DeriveHelperCompat => {
"derive helper attribute"
}
NonMacroAttrKind::Registered => "explicitly registered attribute",
}
}
@ -385,7 +390,9 @@ impl NonMacroAttrKind {
/// Users of some attributes cannot mark them as used, so they are considered always used.
pub fn is_used(self) -> bool {
match self {
NonMacroAttrKind::Tool | NonMacroAttrKind::DeriveHelper => true,
NonMacroAttrKind::Tool
| NonMacroAttrKind::DeriveHelper
| NonMacroAttrKind::DeriveHelperCompat => true,
NonMacroAttrKind::Builtin | NonMacroAttrKind::Registered => false,
}
}

13
compiler/rustc_parse/src/parser/attr.rs
View File

@ -312,14 +312,13 @@ impl<'a> Parser<'a> {
}
pub fn maybe_needs_tokens(attrs: &[ast::Attribute]) -> bool {
// One of the attributes may either itself be a macro, or apply derive macros (`derive`),
// or expand to macro attributes (`cfg_attr`).
attrs.iter().any(|attr| {
if let Some(ident) = attr.ident() {
attr.ident().map_or(true, |ident| {
ident.name == sym::derive
// This might apply a custom attribute/derive
|| ident.name == sym::cfg_attr
|| !rustc_feature::is_builtin_attr_name(ident.name)
} else {
true
}
|| ident.name == sym::cfg_attr
|| !rustc_feature::is_builtin_attr_name(ident.name)
})
})
}

2
compiler/rustc_resolve/src/diagnostics.rs
View File

@ -609,7 +609,7 @@ impl<'a> Resolver<'a> {
}
}
Scope::DeriveHelpersCompat => {
let res = Res::NonMacroAttr(NonMacroAttrKind::DeriveHelper);
let res = Res::NonMacroAttr(NonMacroAttrKind::DeriveHelperCompat);
if filter_fn(res) {
for derive in parent_scope.derives {
let parent_scope = &ParentScope { derives: &[], ..*parent_scope };

132
compiler/rustc_resolve/src/macros.rs
View File

@ -12,24 +12,24 @@ use rustc_ast_pretty::pprust;
use rustc_attr::StabilityLevel;
use rustc_data_structures::fx::FxHashSet;
use rustc_data_structures::ptr_key::PtrKey;
use rustc_data_structures::sync::Lrc;
use rustc_errors::struct_span_err;
use rustc_expand::base::{Indeterminate, InvocationRes, ResolverExpand, SyntaxExtension};
use rustc_expand::compile_declarative_macro;
use rustc_expand::expand::{AstFragment, AstFragmentKind, Invocation, InvocationKind};
use rustc_expand::expand::{AstFragment, Invocation, InvocationKind};
use rustc_feature::is_builtin_attr_name;
use rustc_hir::def::{self, DefKind, NonMacroAttrKind};
use rustc_hir::def_id;
use rustc_middle::middle::stability;
use rustc_middle::ty;
use rustc_session::lint::builtin::UNUSED_MACROS;
use rustc_session::parse::feature_err;
use rustc_session::Session;
use rustc_span::edition::Edition;
use rustc_span::hygiene::{self, ExpnData, ExpnId, ExpnKind};
use rustc_span::hygiene::{AstPass, MacroKind};
use rustc_span::symbol::{kw, sym, Ident, Symbol};
use rustc_span::{Span, DUMMY_SP};
use rustc_data_structures::sync::Lrc;
use rustc_span::hygiene::{AstPass, MacroKind};
use std::cell::Cell;
use std::{mem, ptr};
@ -241,15 +241,20 @@ impl<'a> ResolverExpand for Resolver<'a> {
}
};
let (path, kind, derives, after_derive) = match invoc.kind {
let (path, kind, inner_attr, derives, after_derive) = match invoc.kind {
InvocationKind::Attr { ref attr, ref derives, after_derive, .. } => (
&attr.get_normal_item().path,
MacroKind::Attr,
attr.style == ast::AttrStyle::Inner,
self.arenas.alloc_ast_paths(derives),
after_derive,
),
InvocationKind::Bang { ref mac, .. } => (&mac.path, MacroKind::Bang, &[][..], false),
InvocationKind::Derive { ref path, .. } => (path, MacroKind::Derive, &[][..], false),
InvocationKind::Bang { ref mac, .. } => {
(&mac.path, MacroKind::Bang, false, &[][..], false)
}
InvocationKind::Derive { ref path, .. } => {
(path, MacroKind::Derive, false, &[][..], false)
}
InvocationKind::DeriveContainer { ref derives, .. } => {
// Block expansion of the container until we resolve all derives in it.
// This is required for two reasons:
@ -281,7 +286,7 @@ impl<'a> ResolverExpand for Resolver<'a> {
ext.helper_attrs.iter().map(|name| Ident::new(*name, span)),
);
if ext.is_derive_copy {
self.add_derive_copy(invoc_id);
self.containers_deriving_copy.insert(invoc_id);
}
ext
}
@ -299,8 +304,17 @@ impl<'a> ResolverExpand for Resolver<'a> {
// Derives are not included when `invocations` are collected, so we have to add them here.
let parent_scope = &ParentScope { derives, ..parent_scope };
let require_inert = !invoc.fragment_kind.supports_macro_expansion();
let node_id = self.lint_node_id(eager_expansion_root);
let (ext, res) = self.smart_resolve_macro_path(path, kind, parent_scope, node_id, force)?;
let (ext, res) = self.smart_resolve_macro_path(
path,
kind,
require_inert,
inner_attr,
parent_scope,
node_id,
force,
)?;
let span = invoc.span();
invoc_id.set_expn_data(ext.expn_data(
@ -318,29 +332,6 @@ impl<'a> ResolverExpand for Resolver<'a> {
self.definitions.add_parent_module_of_macro_def(invoc_id, normal_module_def_id);
}
match invoc.fragment_kind {
AstFragmentKind::Arms
| AstFragmentKind::Fields
| AstFragmentKind::FieldPats
| AstFragmentKind::GenericParams
| AstFragmentKind::Params
| AstFragmentKind::StructFields
| AstFragmentKind::Variants => {
if let Res::Def(..) = res {
self.session.span_err(
span,
&format!(
"expected an inert attribute, found {} {}",
res.article(),
res.descr()
),
);
return Ok(InvocationRes::Single(self.dummy_ext(kind)));
}
}
_ => {}
}
Ok(InvocationRes::Single(ext))
}
@ -360,10 +351,6 @@ impl<'a> ResolverExpand for Resolver<'a> {
self.containers_deriving_copy.contains(&expn_id)
}
fn add_derive_copy(&mut self, expn_id: ExpnId) {
self.containers_deriving_copy.insert(expn_id);
}
// The function that implements the resolution logic of `#[cfg_accessible(path)]`.
// Returns true if the path can certainly be resolved in one of three namespaces,
// returns false if the path certainly cannot be resolved in any of the three namespaces.
@ -403,10 +390,14 @@ impl<'a> ResolverExpand for Resolver<'a> {
impl<'a> Resolver<'a> {
/// Resolve macro path with error reporting and recovery.
/// Uses dummy syntax extensions for unresolved macros or macros with unexpected resolutions
/// for better error recovery.
fn smart_resolve_macro_path(
&mut self,
path: &ast::Path,
kind: MacroKind,
require_inert: bool,
inner_attr: bool,
parent_scope: &ParentScope<'a>,
node_id: NodeId,
force: bool,
@ -414,7 +405,6 @@ impl<'a> Resolver<'a> {
let (ext, res) = match self.resolve_macro_path(path, Some(kind), parent_scope, true, force)
{
Ok((Some(ext), res)) => (ext, res),
// Use dummy syntax extensions for unresolved macros for better recovery.
Ok((None, res)) => (self.dummy_ext(kind), res),
Err(Determinacy::Determined) => (self.dummy_ext(kind), Res::Err),
Err(Determinacy::Undetermined) => return Err(Indeterminate),
@ -451,19 +441,43 @@ impl<'a> Resolver<'a> {
self.check_stability_and_deprecation(&ext, path, node_id);
Ok(if ext.macro_kind() != kind {
let expected = kind.descr_expected();
let unexpected_res = if ext.macro_kind() != kind {
Some((kind.article(), kind.descr_expected()))
} else if require_inert && matches!(res, Res::Def(..)) {
Some(("a", "non-macro attribute"))
} else {
None
};
if let Some((article, expected)) = unexpected_res {
let path_str = pprust::path_to_string(path);
let msg = format!("expected {}, found {} `{}`", expected, res.descr(), path_str);
self.session
.struct_span_err(path.span, &msg)
.span_label(path.span, format!("not {} {}", kind.article(), expected))
.span_label(path.span, format!("not {} {}", article, expected))
.emit();
// Use dummy syntax extensions for unexpected macro kinds for better recovery.
(self.dummy_ext(kind), Res::Err)
} else {
(ext, res)
})
return Ok((self.dummy_ext(kind), Res::Err));
}
// We are trying to avoid reporting this error if other related errors were reported.
if inner_attr
&& !self.session.features_untracked().custom_inner_attributes
&& path != &sym::test
&& res != Res::Err
{
feature_err(
&self.session.parse_sess,
sym::custom_inner_attributes,
path.span,
match res {
Res::Def(..) => "inner macro attributes are unstable",
Res::NonMacroAttr(..) => "custom inner attributes are unstable",
_ => unreachable!(),
},
)
.emit();
}
Ok((ext, res))
}
pub fn resolve_macro_path(
@ -568,10 +582,9 @@ impl<'a> Resolver<'a> {
struct Flags: u8 {
const MACRO_RULES = 1 << 0;
const MODULE = 1 << 1;
const DERIVE_HELPER_COMPAT = 1 << 2;
const MISC_SUGGEST_CRATE = 1 << 3;
const MISC_SUGGEST_SELF = 1 << 4;
const MISC_FROM_PRELUDE = 1 << 5;
const MISC_SUGGEST_CRATE = 1 << 2;
const MISC_SUGGEST_SELF = 1 << 3;
const MISC_FROM_PRELUDE = 1 << 4;
}
}
@ -646,14 +659,11 @@ impl<'a> Resolver<'a> {
) {
Ok((Some(ext), _)) => {
if ext.helper_attrs.contains(&ident.name) {
let binding = (
Res::NonMacroAttr(NonMacroAttrKind::DeriveHelper),
ty::Visibility::Public,
result = ok(
Res::NonMacroAttr(NonMacroAttrKind::DeriveHelperCompat),
derive.span,
ExpnId::root(),
)
.to_name_binding(this.arenas);
result = Ok((binding, Flags::DERIVE_HELPER_COMPAT));
this.arenas,
);
break;
}
}
@ -799,17 +809,15 @@ impl<'a> Resolver<'a> {
let (res, innermost_res) = (binding.res(), innermost_binding.res());
if res != innermost_res {
let builtin = Res::NonMacroAttr(NonMacroAttrKind::Builtin);
let is_derive_helper_compat = |res, flags: Flags| {
res == Res::NonMacroAttr(NonMacroAttrKind::DeriveHelper)
&& flags.contains(Flags::DERIVE_HELPER_COMPAT)
};
let derive_helper_compat =
Res::NonMacroAttr(NonMacroAttrKind::DeriveHelperCompat);
let ambiguity_error_kind = if is_import {
Some(AmbiguityKind::Import)
} else if innermost_res == builtin || res == builtin {
Some(AmbiguityKind::BuiltinAttr)
} else if is_derive_helper_compat(innermost_res, innermost_flags)
|| is_derive_helper_compat(res, flags)
} else if innermost_res == derive_helper_compat
|| res == derive_helper_compat
{
Some(AmbiguityKind::DeriveHelper)
} else if innermost_flags.contains(Flags::MACRO_RULES)

10
src/test/ui/attrs-resolution-errors.rs
View File

@ -1,12 +1,12 @@
enum FooEnum {
#[test]
//~^ ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
Bar(i32),
}
struct FooStruct {
#[test]
//~^ ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
bar: i32,
}
@ -21,20 +21,20 @@ fn main() {
match foo_struct {
FooStruct {
#[test] bar
//~^ ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
} => {}
}
match 1 {
0 => {}
#[test]
//~^ ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
_ => {}
}
let _another_foo_strunct = FooStruct {
#[test]
//~^ ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
bar: 1,
};
}

30
src/test/ui/attrs-resolution-errors.stderr
View File

@ -1,32 +1,32 @@
error: expected an inert attribute, found an attribute macro
--> $DIR/attrs-resolution-errors.rs:2:5
error: expected non-macro attribute, found attribute macro `test`
--> $DIR/attrs-resolution-errors.rs:2:7
|
LL | #[test]
| ^^^^^^^
| ^^^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/attrs-resolution-errors.rs:8:5
error: expected non-macro attribute, found attribute macro `test`
--> $DIR/attrs-resolution-errors.rs:8:7
|
LL | #[test]
| ^^^^^^^
| ^^^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/attrs-resolution-errors.rs:23:13
error: expected non-macro attribute, found attribute macro `test`
--> $DIR/attrs-resolution-errors.rs:23:15
|
LL | #[test] bar
| ^^^^^^^
| ^^^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/attrs-resolution-errors.rs:30:9
error: expected non-macro attribute, found attribute macro `test`
--> $DIR/attrs-resolution-errors.rs:30:11
|
LL | #[test]
| ^^^^^^^
| ^^^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/attrs-resolution-errors.rs:36:9
error: expected non-macro attribute, found attribute macro `test`
--> $DIR/attrs-resolution-errors.rs:36:11
|
LL | #[test]
| ^^^^^^^
| ^^^^ not a non-macro attribute
error: aborting due to 5 previous errors

2
src/test/ui/conditional-compilation/cfg_accessible-stuck.rs
View File

@ -1,6 +1,6 @@
#![feature(cfg_accessible)]
#[cfg_accessible(Z)] //~ ERROR cannot determine whether the path is accessible or not
#[cfg_accessible(Z)] // OK, recovered after the other `cfg_accessible` produces an error.
struct S;
#[cfg_accessible(S)] //~ ERROR cannot determine whether the path is accessible or not

8
src/test/ui/conditional-compilation/cfg_accessible-stuck.stderr
View File

@ -4,11 +4,5 @@ error: cannot determine whether the path is accessible or not
LL | #[cfg_accessible(S)]
| ^^^^^^^^^^^^^^^^^^^^
error: cannot determine whether the path is accessible or not
--> $DIR/cfg_accessible-stuck.rs:3:1
|
LL | #[cfg_accessible(Z)]
| ^^^^^^^^^^^^^^^^^^^^
error: aborting due to 2 previous errors
error: aborting due to previous error

1
src/test/ui/issues/issue-36617.rs
View File

@ -1,5 +1,4 @@
#![derive(Copy)] //~ ERROR `derive` may only be applied to structs, enums and unions
//~| ERROR cannot determine resolution for the derive macro `Copy`
//~| ERROR cannot determine resolution for the derive macro `Copy`
fn main() {}

10
src/test/ui/issues/issue-36617.stderr
View File

@ -12,14 +12,6 @@ LL | #![derive(Copy)]
|
= note: import resolution is stuck, try simplifying macro imports
error: cannot determine resolution for the derive macro `Copy`
--> $DIR/issue-36617.rs:1:11
|
LL | #![derive(Copy)]
| ^^^^
|
= note: import resolution is stuck, try simplifying macro imports
error: aborting due to 3 previous errors
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0774`.

2
src/test/ui/issues/issue-49934-errors.rs
View File

@ -1,10 +1,8 @@
fn foo<#[derive(Debug)] T>() {
//~^ ERROR `derive` may only be applied to structs, enums and unions
//~| ERROR expected an inert attribute, found a derive macro
match 0 {
#[derive(Debug)]
//~^ ERROR `derive` may only be applied to structs, enums and unions
//~| ERROR expected an inert attribute, found a derive macro
_ => (),
}
}

16
src/test/ui/issues/issue-49934-errors.stderr
View File

@ -4,24 +4,12 @@ error[E0774]: `derive` may only be applied to structs, enums and unions
LL | fn foo<#[derive(Debug)] T>() {
| ^^^^^^^^^^^^^^^^
error: expected an inert attribute, found a derive macro
--> $DIR/issue-49934-errors.rs:1:17
|
LL | fn foo<#[derive(Debug)] T>() {
| ^^^^^
error[E0774]: `derive` may only be applied to structs, enums and unions
--> $DIR/issue-49934-errors.rs:5:9
--> $DIR/issue-49934-errors.rs:4:9
|
LL | #[derive(Debug)]
| ^^^^^^^^^^^^^^^^
error: expected an inert attribute, found a derive macro
--> $DIR/issue-49934-errors.rs:5:18
|
LL | #[derive(Debug)]
| ^^^^^
error: aborting due to 4 previous errors
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0774`.

1
src/test/ui/malformed/issue-69341-malformed-derive-inert.rs
View File

@ -4,7 +4,6 @@ struct CLI {
#[derive(parse())]
//~^ ERROR traits in `#[derive(...)]` don't accept arguments
//~| ERROR cannot find derive macro `parse` in this scope
//~| ERROR cannot find derive macro `parse` in this scope
path: (),
//~^ ERROR `derive` may only be applied to structs, enums and unions
}

10
src/test/ui/malformed/issue-69341-malformed-derive-inert.stderr
View File

@ -5,7 +5,7 @@ LL | #[derive(parse())]
| ^^ help: remove the arguments
error[E0774]: `derive` may only be applied to structs, enums and unions
--> $DIR/issue-69341-malformed-derive-inert.rs:8:5
--> $DIR/issue-69341-malformed-derive-inert.rs:7:5
|
LL | path: (),
| ^^^^^^^^
@ -16,12 +16,6 @@ error: cannot find derive macro `parse` in this scope
LL | #[derive(parse())]
| ^^^^^
error: cannot find derive macro `parse` in this scope
--> $DIR/issue-69341-malformed-derive-inert.rs:4:14
|
LL | #[derive(parse())]
| ^^^^^
error: aborting due to 4 previous errors
error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0774`.

4
src/test/ui/proc-macro/proc-macro-gates.rs
View File

@ -7,11 +7,11 @@
extern crate test_macros;
fn _test_inner() {
#![empty_attr] //~ ERROR: non-builtin inner attributes are unstable
#![empty_attr] //~ ERROR: inner macro attributes are unstable
}
mod _test2_inner {
#![empty_attr] //~ ERROR: non-builtin inner attributes are unstable
#![empty_attr] //~ ERROR: inner macro attributes are unstable
}
#[empty_attr = "y"] //~ ERROR: key-value macro attributes are not supported

12
src/test/ui/proc-macro/proc-macro-gates.stderr
View File

@ -1,17 +1,17 @@
error[E0658]: non-builtin inner attributes are unstable
--> $DIR/proc-macro-gates.rs:10:5
error[E0658]: inner macro attributes are unstable
--> $DIR/proc-macro-gates.rs:10:8
|
LL | #![empty_attr]
| ^^^^^^^^^^^^^^
| ^^^^^^^^^^
|
= note: see issue #54726 <https://github.com/rust-lang/rust/issues/54726> for more information
= help: add `#![feature(custom_inner_attributes)]` to the crate attributes to enable
error[E0658]: non-builtin inner attributes are unstable
--> $DIR/proc-macro-gates.rs:14:5
error[E0658]: inner macro attributes are unstable
--> $DIR/proc-macro-gates.rs:14:8
|
LL | #![empty_attr]
| ^^^^^^^^^^^^^^
| ^^^^^^^^^^
|
= note: see issue #54726 <https://github.com/rust-lang/rust/issues/54726> for more information
= help: add `#![feature(custom_inner_attributes)]` to the crate attributes to enable

4
src/test/ui/proc-macro/proc-macro-gates2.rs
View File

@ -10,11 +10,11 @@ extern crate test_macros;
// should either require a feature gate or not be allowed on stable.
fn _test6<#[empty_attr] T>() {}
//~^ ERROR: expected an inert attribute, found an attribute macro
//~^ ERROR: expected non-macro attribute, found attribute macro
fn _test7() {
match 1 {
#[empty_attr] //~ ERROR: expected an inert attribute, found an attribute macro
#[empty_attr] //~ ERROR: expected non-macro attribute, found attribute macro
0 => {}
_ => {}
}

12
src/test/ui/proc-macro/proc-macro-gates2.stderr
View File

@ -1,14 +1,14 @@
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-gates2.rs:12:11
error: expected non-macro attribute, found attribute macro `empty_attr`
--> $DIR/proc-macro-gates2.rs:12:13
|
LL | fn _test6<#[empty_attr] T>() {}
| ^^^^^^^^^^^^^
| ^^^^^^^^^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-gates2.rs:17:9
error: expected non-macro attribute, found attribute macro `empty_attr`
--> $DIR/proc-macro-gates2.rs:17:11
|
LL | #[empty_attr]
| ^^^^^^^^^^^^^
| ^^^^^^^^^^ not a non-macro attribute
error: aborting due to 2 previous errors

20
src/test/ui/rfc-2565-param-attrs/param-attrs-builtin-attrs.rs
View File

@ -3,7 +3,7 @@ extern "C" {
/// Foo
//~^ ERROR documentation comments cannot be applied to function
#[test] a: i32,
//~^ ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
/// Bar
//~^ ERROR documentation comments cannot be applied to function
#[must_use]
@ -19,7 +19,7 @@ type FnType = fn(
/// Foo
//~^ ERROR documentation comments cannot be applied to function
#[test] a: u32,
//~^ ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
/// Bar
//~^ ERROR documentation comments cannot be applied to function
#[must_use]
@ -34,7 +34,7 @@ pub fn foo(
/// Foo
//~^ ERROR documentation comments cannot be applied to function
#[test] a: u32,
//~^ ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
/// Bar
//~^ ERROR documentation comments cannot be applied to function
#[must_use]
@ -54,7 +54,7 @@ impl SelfStruct {
/// Bar
//~^ ERROR documentation comments cannot be applied to function
#[test] a: i32,
//~^ ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
/// Baz
//~^ ERROR documentation comments cannot be applied to function
#[must_use]
@ -69,7 +69,7 @@ impl SelfStruct {
/// Foo
//~^ ERROR documentation comments cannot be applied to function
#[test] a: i32,
//~^ ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
/// Baz
//~^ ERROR documentation comments cannot be applied to function
#[must_use]
@ -90,7 +90,7 @@ impl RefStruct {
/// Bar
//~^ ERROR documentation comments cannot be applied to function
#[test] a: i32,
//~^ ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
/// Baz
//~^ ERROR documentation comments cannot be applied to function
#[must_use]
@ -109,7 +109,7 @@ trait RefTrait {
/// Bar
//~^ ERROR documentation comments cannot be applied to function
#[test] a: i32,
//~^ ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
/// Baz
//~^ ERROR documentation comments cannot be applied to function
#[must_use]
@ -124,7 +124,7 @@ trait RefTrait {
/// Foo
//~^ ERROR documentation comments cannot be applied to function
#[test] a: i32,
//~^ ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
/// Baz
//~^ ERROR documentation comments cannot be applied to function
#[must_use]
@ -144,7 +144,7 @@ impl RefTrait for RefStruct {
/// Bar
//~^ ERROR documentation comments cannot be applied to function
#[test] a: i32,
//~^ ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
/// Baz
//~^ ERROR documentation comments cannot be applied to function
#[must_use]
@ -161,7 +161,7 @@ fn main() {
/// Foo
//~^ ERROR documentation comments cannot be applied to function
#[test] a: u32,
//~^ ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
/// Bar
//~^ ERROR documentation comments cannot be applied to function
#[must_use]

60
src/test/ui/rfc-2565-param-attrs/param-attrs-builtin-attrs.stderr
View File

@ -1,62 +1,62 @@
error: expected an inert attribute, found an attribute macro
--> $DIR/param-attrs-builtin-attrs.rs:5:9
error: expected non-macro attribute, found attribute macro `test`
--> $DIR/param-attrs-builtin-attrs.rs:5:11
|
LL | #[test] a: i32,
| ^^^^^^^
| ^^^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/param-attrs-builtin-attrs.rs:21:5
error: expected non-macro attribute, found attribute macro `test`
--> $DIR/param-attrs-builtin-attrs.rs:21:7
|
LL | #[test] a: u32,
| ^^^^^^^
| ^^^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/param-attrs-builtin-attrs.rs:36:5
error: expected non-macro attribute, found attribute macro `test`
--> $DIR/param-attrs-builtin-attrs.rs:36:7
|
LL | #[test] a: u32,
| ^^^^^^^
| ^^^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/param-attrs-builtin-attrs.rs:56:9
error: expected non-macro attribute, found attribute macro `test`
--> $DIR/param-attrs-builtin-attrs.rs:56:11
|
LL | #[test] a: i32,
| ^^^^^^^
| ^^^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/param-attrs-builtin-attrs.rs:71:9
error: expected non-macro attribute, found attribute macro `test`
--> $DIR/param-attrs-builtin-attrs.rs:71:11
|
LL | #[test] a: i32,
| ^^^^^^^
| ^^^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/param-attrs-builtin-attrs.rs:92:9
error: expected non-macro attribute, found attribute macro `test`
--> $DIR/param-attrs-builtin-attrs.rs:92:11
|
LL | #[test] a: i32,
| ^^^^^^^
| ^^^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/param-attrs-builtin-attrs.rs:111:9
error: expected non-macro attribute, found attribute macro `test`
--> $DIR/param-attrs-builtin-attrs.rs:111:11
|
LL | #[test] a: i32,
| ^^^^^^^
| ^^^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/param-attrs-builtin-attrs.rs:126:9
error: expected non-macro attribute, found attribute macro `test`
--> $DIR/param-attrs-builtin-attrs.rs:126:11
|
LL | #[test] a: i32,
| ^^^^^^^
| ^^^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/param-attrs-builtin-attrs.rs:146:9
error: expected non-macro attribute, found attribute macro `test`
--> $DIR/param-attrs-builtin-attrs.rs:146:11
|
LL | #[test] a: i32,
| ^^^^^^^
| ^^^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/param-attrs-builtin-attrs.rs:163:9
error: expected non-macro attribute, found attribute macro `test`
--> $DIR/param-attrs-builtin-attrs.rs:163:11
|
LL | #[test] a: u32,
| ^^^^^^^
| ^^^^ not a non-macro attribute
error: documentation comments cannot be applied to function parameters
--> $DIR/param-attrs-builtin-attrs.rs:3:9

58
src/test/ui/rfc-2565-param-attrs/proc-macro-cannot-be-used.rs
View File

@ -8,58 +8,58 @@ use ident_mac::id;
struct W(u8);
extern "C" { fn ffi(#[id] arg1: i32, #[id] ...); }
//~^ ERROR expected an inert attribute, found an attribute macro
//~| ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
//~| ERROR expected non-macro attribute, found attribute macro
unsafe extern "C" fn cvar(arg1: i32, #[id] mut args: ...) {}
//~^ ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
type Alias = extern "C" fn(#[id] u8, #[id] ...);
//~^ ERROR expected an inert attribute, found an attribute macro
//~| ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
//~| ERROR expected non-macro attribute, found attribute macro
fn free(#[id] arg1: u8) {
//~^ ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
let lam = |#[id] W(x), #[id] y: usize| ();
//~^ ERROR expected an inert attribute, found an attribute macro
//~| ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
//~| ERROR expected non-macro attribute, found attribute macro
}
impl W {
fn inherent1(#[id] self, #[id] arg1: u8) {}
//~^ ERROR expected an inert attribute, found an attribute macro
//~| ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
//~| ERROR expected non-macro attribute, found attribute macro
fn inherent2(#[id] &self, #[id] arg1: u8) {}
//~^ ERROR expected an inert attribute, found an attribute macro
//~| ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
//~| ERROR expected non-macro attribute, found attribute macro
fn inherent3<'a>(#[id] &'a mut self, #[id] arg1: u8) {}
//~^ ERROR expected an inert attribute, found an attribute macro
//~| ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
//~| ERROR expected non-macro attribute, found attribute macro
fn inherent4<'a>(#[id] self: Box<Self>, #[id] arg1: u8) {}
//~^ ERROR expected an inert attribute, found an attribute macro
//~| ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
//~| ERROR expected non-macro attribute, found attribute macro
fn issue_64682_associated_fn<'a>(#[id] arg1: u8, #[id] arg2: u8) {}
//~^ ERROR expected an inert attribute, found an attribute macro
//~| ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
//~| ERROR expected non-macro attribute, found attribute macro
}
trait A {
fn trait1(#[id] self, #[id] arg1: u8);
//~^ ERROR expected an inert attribute, found an attribute macro
//~| ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
//~| ERROR expected non-macro attribute, found attribute macro
fn trait2(#[id] &self, #[id] arg1: u8);
//~^ ERROR expected an inert attribute, found an attribute macro
//~| ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
//~| ERROR expected non-macro attribute, found attribute macro
fn trait3<'a>(#[id] &'a mut self, #[id] arg1: u8);
//~^ ERROR expected an inert attribute, found an attribute macro
//~| ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
//~| ERROR expected non-macro attribute, found attribute macro
fn trait4<'a>(#[id] self: Box<Self>, #[id] arg1: u8, #[id] Vec<u8>);
//~^ ERROR expected an inert attribute, found an attribute macro
//~| ERROR expected an inert attribute, found an attribute macro
//~| ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
//~| ERROR expected non-macro attribute, found attribute macro
//~| ERROR expected non-macro attribute, found attribute macro
fn issue_64682_associated_fn<'a>(#[id] arg1: u8, #[id] arg2: u8);
//~^ ERROR expected an inert attribute, found an attribute macro
//~| ERROR expected an inert attribute, found an attribute macro
//~^ ERROR expected non-macro attribute, found attribute macro
//~| ERROR expected non-macro attribute, found attribute macro
}
fn main() {}

174
src/test/ui/rfc-2565-param-attrs/proc-macro-cannot-be-used.stderr
View File

@ -1,176 +1,176 @@
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:10:21
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:10:23
|
LL | extern "C" { fn ffi(#[id] arg1: i32, #[id] ...); }
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:10:38
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:10:40
|
LL | extern "C" { fn ffi(#[id] arg1: i32, #[id] ...); }
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:14:38
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:14:40
|
LL | unsafe extern "C" fn cvar(arg1: i32, #[id] mut args: ...) {}
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:17:28
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:17:30
|
LL | type Alias = extern "C" fn(#[id] u8, #[id] ...);
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:17:38
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:17:40
|
LL | type Alias = extern "C" fn(#[id] u8, #[id] ...);
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:21:9
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:21:11
|
LL | fn free(#[id] arg1: u8) {
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:23:16
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:23:18
|
LL | let lam = |#[id] W(x), #[id] y: usize| ();
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:23:28
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:23:30
|
LL | let lam = |#[id] W(x), #[id] y: usize| ();
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:29:18
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:29:20
|
LL | fn inherent1(#[id] self, #[id] arg1: u8) {}
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:29:30
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:29:32
|
LL | fn inherent1(#[id] self, #[id] arg1: u8) {}
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:32:18
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:32:20
|
LL | fn inherent2(#[id] &self, #[id] arg1: u8) {}
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:32:31
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:32:33
|
LL | fn inherent2(#[id] &self, #[id] arg1: u8) {}
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:35:22
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:35:24
|
LL | fn inherent3<'a>(#[id] &'a mut self, #[id] arg1: u8) {}
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:35:42
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:35:44
|
LL | fn inherent3<'a>(#[id] &'a mut self, #[id] arg1: u8) {}
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:38:22
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:38:24
|
LL | fn inherent4<'a>(#[id] self: Box<Self>, #[id] arg1: u8) {}
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:38:45
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:38:47
|
LL | fn inherent4<'a>(#[id] self: Box<Self>, #[id] arg1: u8) {}
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:41:38
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:41:40
|
LL | fn issue_64682_associated_fn<'a>(#[id] arg1: u8, #[id] arg2: u8) {}
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:41:54
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:41:56
|
LL | fn issue_64682_associated_fn<'a>(#[id] arg1: u8, #[id] arg2: u8) {}
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:47:15
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:47:17
|
LL | fn trait1(#[id] self, #[id] arg1: u8);
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:47:27
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:47:29
|
LL | fn trait1(#[id] self, #[id] arg1: u8);
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:50:15
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:50:17
|
LL | fn trait2(#[id] &self, #[id] arg1: u8);
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:50:28
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:50:30
|
LL | fn trait2(#[id] &self, #[id] arg1: u8);
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:53:19
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:53:21
|
LL | fn trait3<'a>(#[id] &'a mut self, #[id] arg1: u8);
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:53:39
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:53:41
|
LL | fn trait3<'a>(#[id] &'a mut self, #[id] arg1: u8);
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:56:19
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:56:21
|
LL | fn trait4<'a>(#[id] self: Box<Self>, #[id] arg1: u8, #[id] Vec<u8>);
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:56:42
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:56:44
|
LL | fn trait4<'a>(#[id] self: Box<Self>, #[id] arg1: u8, #[id] Vec<u8>);
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:56:58
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:56:60
|
LL | fn trait4<'a>(#[id] self: Box<Self>, #[id] arg1: u8, #[id] Vec<u8>);
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:60:38
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:60:40
|
LL | fn issue_64682_associated_fn<'a>(#[id] arg1: u8, #[id] arg2: u8);
| ^^^^^
| ^^ not a non-macro attribute
error: expected an inert attribute, found an attribute macro
--> $DIR/proc-macro-cannot-be-used.rs:60:54
error: expected non-macro attribute, found attribute macro `id`
--> $DIR/proc-macro-cannot-be-used.rs:60:56
|
LL | fn issue_64682_associated_fn<'a>(#[id] arg1: u8, #[id] arg2: u8);
| ^^^^^
| ^^ not a non-macro attribute
error: aborting due to 29 previous errors

2
src/test/ui/span/issue-36530.rs
View File

@ -6,7 +6,7 @@
#[foo]
mod foo {
#![foo] //~ ERROR non-builtin inner attributes are unstable
#![foo] //~ ERROR custom inner attributes are unstable
}
fn main() {}

6
src/test/ui/span/issue-36530.stderr
View File

@ -1,8 +1,8 @@
error[E0658]: non-builtin inner attributes are unstable
--> $DIR/issue-36530.rs:9:5
error[E0658]: custom inner attributes are unstable
--> $DIR/issue-36530.rs:9:8
|
LL | #![foo]
| ^^^^^^^
| ^^^
|
= note: see issue #54726 <https://github.com/rust-lang/rust/issues/54726> for more information
= help: add `#![feature(custom_inner_attributes)]` to the crate attributes to enable

3
src/test/ui/span/issue-43927-non-ADT-derive.rs
View File

@ -5,9 +5,6 @@
//~| ERROR cannot determine resolution for the derive macro `Debug`
//~| ERROR cannot determine resolution for the derive macro `PartialEq`
//~| ERROR cannot determine resolution for the derive macro `Eq`
//~| ERROR cannot determine resolution for the derive macro `Debug`
//~| ERROR cannot determine resolution for the derive macro `PartialEq`
//~| ERROR cannot determine resolution for the derive macro `Eq`
struct DerivedOn;
fn main() {}

26
src/test/ui/span/issue-43927-non-ADT-derive.stderr
View File

@ -28,30 +28,6 @@ LL | #![derive(Debug, PartialEq, Eq)] // should be an outer attribute!
|
= note: import resolution is stuck, try simplifying macro imports
error: cannot determine resolution for the derive macro `Eq`
--> $DIR/issue-43927-non-ADT-derive.rs:3:29
|
LL | #![derive(Debug, PartialEq, Eq)] // should be an outer attribute!
| ^^
|
= note: import resolution is stuck, try simplifying macro imports
error: cannot determine resolution for the derive macro `PartialEq`
--> $DIR/issue-43927-non-ADT-derive.rs:3:18
|
LL | #![derive(Debug, PartialEq, Eq)] // should be an outer attribute!
| ^^^^^^^^^
|
= note: import resolution is stuck, try simplifying macro imports
error: cannot determine resolution for the derive macro `Debug`
--> $DIR/issue-43927-non-ADT-derive.rs:3:11
|
LL | #![derive(Debug, PartialEq, Eq)] // should be an outer attribute!
| ^^^^^
|
= note: import resolution is stuck, try simplifying macro imports
error: aborting due to 7 previous errors
error: aborting due to 4 previous errors
For more information about this error, try `rustc --explain E0774`.