template<typename T, bool unused = absl::is_trivially_copy_constructible<T>::value&& absl::is_trivially_copy_assignable<typename std::remove_cv< T>::type>::value&& std::is_trivially_destructible<T>::value>
class absl::optional_internal::optional_data< T, unused >
Definition at line 176 of file internal/optional.h.