3303 struct OptionalStorageBase {  struct
3306   constexpr OptionalStorageBase() : empty_('\0') {}  in OptionalStorageBase()  function
3309   constexpr explicit OptionalStorageBase(in_place_t, Args&&... args)  in OptionalStorageBase()  function
3323   ~OptionalStorageBase() {  in ~OptionalStorageBase()
3329   void Init(Args&&... args) {  in Init()
3335   bool is_populated_ = false;
3336   union {
3346 struct OptionalStorageBase<T, true /* trivially destructible */> {  struct
3349   constexpr OptionalStorageBase() : empty_('\0') {}  in OptionalStorageBase()  function
3352   constexpr explicit OptionalStorageBase(in_place_t, Args&&... args)  in OptionalStorageBase()  function
3370   void Init(Args&&... args) {  in Init()
3376   bool is_populated_ = false;
3377   union {