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resolve: Always resolve visibilities on impl items #67236

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Dec 12, 2019
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24 changes: 12 additions & 12 deletions src/librustc_resolve/build_reduced_graph.rs
Original file line number Diff line number Diff line change
@@ -647,8 +647,6 @@ impl<'a, 'b> BuildReducedGraphVisitor<'a, 'b> {
self.r.define(parent, ident, TypeNS, imported_binding);
}

ItemKind::GlobalAsm(..) => {}

ItemKind::Mod(..) if ident.name == kw::Invalid => {} // Crate root

ItemKind::Mod(..) => {
@@ -667,9 +665,6 @@ impl<'a, 'b> BuildReducedGraphVisitor<'a, 'b> {
self.parent_scope.module = module;
}

// Handled in `rustc_metadata::{native_libs,link_args}`
ItemKind::ForeignMod(..) => {}

// These items live in the value namespace.
ItemKind::Static(..) => {
let res = Res::Def(DefKind::Static, self.r.definitions.local_def_id(item.id));
@@ -765,12 +760,6 @@ impl<'a, 'b> BuildReducedGraphVisitor<'a, 'b> {
self.insert_field_names_local(def_id, vdata);
}

ItemKind::Impl(.., ref impl_items) => {
for impl_item in impl_items {
self.resolve_visibility(&impl_item.vis);
}
}

ItemKind::Trait(..) => {
let def_id = self.r.definitions.local_def_id(item.id);

@@ -785,6 +774,9 @@ impl<'a, 'b> BuildReducedGraphVisitor<'a, 'b> {
self.parent_scope.module = module;
}

// These items do not add names to modules.
ItemKind::Impl(..) | ItemKind::ForeignMod(..) | ItemKind::GlobalAsm(..) => {}

ItemKind::MacroDef(..) | ItemKind::Mac(_) => unreachable!(),
}
}
@@ -1118,7 +1110,6 @@ macro_rules! method {
}

impl<'a, 'b> Visitor<'b> for BuildReducedGraphVisitor<'a, 'b> {
method!(visit_impl_item: ast::ImplItem, ast::ImplItemKind::Macro, walk_impl_item);
method!(visit_expr: ast::Expr, ast::ExprKind::Mac, walk_expr);
method!(visit_pat: ast::Pat, ast::PatKind::Mac, walk_pat);
method!(visit_ty: ast::Ty, ast::TyKind::Mac, walk_ty);
@@ -1202,6 +1193,15 @@ impl<'a, 'b> Visitor<'b> for BuildReducedGraphVisitor<'a, 'b> {
visit::walk_trait_item(self, item);
}

fn visit_impl_item(&mut self, item: &'b ast::ImplItem) {
if let ast::ImplItemKind::Macro(..) = item.kind {
self.visit_invoc(item.id);
} else {
self.resolve_visibility(&item.vis);
visit::walk_impl_item(self, item);
}
}

fn visit_token(&mut self, t: Token) {
if let token::Interpolated(nt) = t.kind {
if let token::NtExpr(ref expr) = *nt {
25 changes: 25 additions & 0 deletions src/test/ui/resolve/impl-items-vis-unresolved.rs
Original file line number Diff line number Diff line change
@@ -0,0 +1,25 @@
// Visibilities on impl items expanded from macros are resolved (issue #64705).

macro_rules! perftools_inline {
($($item:tt)*) => (
$($item)*
);
}

mod state {
pub struct RawFloatState;
impl RawFloatState {
perftools_inline! {
pub(super) fn new() {} // OK
}
}
}

pub struct RawFloatState;
impl RawFloatState {
perftools_inline! {
pub(super) fn new() {} //~ ERROR failed to resolve: there are too many initial `super`s
}
}

fn main() {}
9 changes: 9 additions & 0 deletions src/test/ui/resolve/impl-items-vis-unresolved.stderr
Original file line number Diff line number Diff line change
@@ -0,0 +1,9 @@
error[E0433]: failed to resolve: there are too many initial `super`s.
--> $DIR/impl-items-vis-unresolved.rs:21:13
|
LL | pub(super) fn new() {}
| ^^^^^ there are too many initial `super`s.

error: aborting due to previous error

For more information about this error, try `rustc --explain E0433`.