use rustc_hir::CRATE_HIR_ID;
use rustc_middle::middle::privacy::AccessLevel;
use rustc_middle::ty::TyCtxt;
-use rustc_span;
use rustc_span::def_id::{CRATE_DEF_ID, LOCAL_CRATE};
use rustc_span::source_map::Spanned;
use rustc_span::symbol::{kw, sym, Symbol};
// the rexport defines the path that a user will actually see. Accordingly,
// we add the rexport as an item here, and then skip over the original
// definition in `visit_item()` below.
+ //
+ // We also skip `#[macro_export] macro_rules!` that have already been inserted,
+ // it can happen if within the same module a `#[macro_export] macro_rules!`
+ // is declared but also a reexport of itself producing two exports of the same
+ // macro in the same module.
+ let mut inserted = FxHashSet::default();
for export in self.cx.tcx.module_exports(CRATE_DEF_ID).unwrap_or(&[]) {
if let Res::Def(DefKind::Macro(_), def_id) = export.res {
if let Some(local_def_id) = def_id.as_local() {
if self.cx.tcx.has_attr(def_id, sym::macro_export) {
- let hir_id = self.cx.tcx.hir().local_def_id_to_hir_id(local_def_id);
- let item = self.cx.tcx.hir().expect_item(hir_id);
- top_level_module.items.push((item, None));
+ if inserted.insert(def_id) {
+ let hir_id = self.cx.tcx.hir().local_def_id_to_hir_id(local_def_id);
+ let item = self.cx.tcx.hir().expect_item(hir_id);
+ top_level_module.items.push((item, None));
+ }
}
}
}
_ if self.inlining && !is_pub => {}
hir::ItemKind::GlobalAsm(..) => {}
hir::ItemKind::Use(_, hir::UseKind::ListStem) => {}
- hir::ItemKind::Use(ref path, kind) => {
+ hir::ItemKind::Use(path, kind) => {
let is_glob = kind == hir::UseKind::Glob;
// Struct and variant constructors and proc macro stubs always show up alongside