1 files changed, 1 insertions, 0 deletions
diff --git a/Firestore/core/src/firebase/firestore/immutable/sorted_map_iterator.h b/Firestore/core/src/firebase/firestore/immutable/sorted_map_iterator.h
index 36f3967..a79f9f5 100644
--- a/Firestore/core/src/firebase/firestore/immutable/sorted_map_iterator.h
+++ b/Firestore/core/src/firebase/firestore/immutable/sorted_map_iterator.h
@@ -123,6 +123,7 @@ class SortedMapIterator {
       case Tag::Tree:
         return tree_iter_.get();
     }
+    FIREBASE_UNREACHABLE();
   }
 
   reference operator*() const {