Fix #8834

crates/hir_def/src/nameres/collector.rs

@@ -481,6 +481,10 @@ impl DefCollector<'_> {
         let res = self.def_map.resolve_name_in_extern_prelude(self.db, &extern_crate.name);
 
         if let Some(ModuleDefId::ModuleId(m)) = res.take_types() {
+            if m == self.def_map.module_id(current_module_id) {
+                return;
+            }
+
             cov_mark::hit!(macro_rules_from_other_crates_are_visible_with_macro_use);
             self.import_all_macros_exported(current_module_id, m.krate);
         }

crates/hir_def/src/nameres/tests.rs

@@ -410,6 +410,21 @@ struct Arc;
     );
 }
 
+#[test]
+fn extern_crate_self() {
+    check(
+        r#"
+//- /main.rs crate:main
+#[macro_use]
+extern crate self as bla;
+"#,
+        expect![[r#"
+            crate
+            bla: t
+        "#]],
+    );
+}
+
 #[test]
 fn reexport_across_crates() {
     check(