Rollup merge of #138724 - fmease:list-stems-bear-no-name, r=nnethercote

Check attrs: Don't try to retrieve the name of list stems

Fixes #138723.

r? nnethercote or compiler

2 files changed, 12 insertions, 2 deletions

diff --git a/compiler/rustc_passes/src/check_attr.rs b/compiler/rustc_passes/src/check_attr.rs
index dca6f2959d2..e0739c342df 100644
--- a/compiler/rustc_passes/src/check_attr.rs
+++ b/compiler/rustc_passes/src/check_attr.rs
@@ -954,8 +954,7 @@ impl<'tcx> CheckAttrVisitor<'tcx> {
             tcx.dcx().emit_err(errors::DocAliasBadLocation { span, attr_str, location });
             return;
         }
-        let item_name = self.tcx.hir_name(hir_id);
-        if item_name == doc_alias {
+        if self.tcx.hir_opt_name(hir_id) == Some(doc_alias) {
             tcx.dcx().emit_err(errors::DocAliasNotAnAlias { span, attr_str });
             return;
         }
diff --git a/tests/ui/rustdoc/doc-alias-use-item-list-stem.rs b/tests/ui/rustdoc/doc-alias-use-item-list-stem.rs
new file mode 100644
index 00000000000..ef310843e21
--- /dev/null
+++ b/tests/ui/rustdoc/doc-alias-use-item-list-stem.rs
@@ -0,0 +1,11 @@
+// Check that we don't ICE on `#[doc(alias)]`es placed on use items with list stems.
+// issue: <https://github.com/rust-lang/rust/issues/138723>
+//@ check-pass
+
+#[doc(alias = "empty")]
+pub use {};
+
+#[doc(alias = "id")]
+pub use {std::convert::identity};
+
+fn main() {}