1 files changed, 2 insertions, 1 deletions
diff --git a/absl/container/flat_hash_set.h b/absl/container/flat_hash_set.h
index e558b071..7b9e0060 100644
--- a/absl/container/flat_hash_set.h
+++ b/absl/container/flat_hash_set.h
@@ -35,6 +35,7 @@
 #include <utility>
 
 #include "absl/algorithm/container.h"
+#include "absl/base/attributes.h"
 #include "absl/base/macros.h"
 #include "absl/container/hash_container_defaults.h"
 #include "absl/container/internal/container_memory.h"
@@ -117,7 +118,7 @@ struct FlatHashSetPolicy;
 template <class T, class Hash = DefaultHashContainerHash<T>,
           class Eq = DefaultHashContainerEq<T>,
           class Allocator = std::allocator<T>>
-class flat_hash_set
+class ABSL_INTERNAL_ATTRIBUTE_OWNER flat_hash_set
     : public absl::container_internal::raw_hash_set<
           absl::container_internal::FlatHashSetPolicy<T>, Hash, Eq, Allocator> {
   using Base = typename flat_hash_set::raw_hash_set;