diff options
Diffstat (limited to 'absl/meta')
| -rw-r--r-- | absl/meta/type_traits.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/absl/meta/type_traits.h b/absl/meta/type_traits.h index 76959cdef602..d57a87923136 100644 --- a/absl/meta/type_traits.h +++ b/absl/meta/type_traits.h @@ -145,6 +145,18 @@ using IsMoveAssignableImpl = decltype(std::declval<T&>() = std::declval<T&&>()); } // namespace type_traits_internal +// MSVC 19.20 has a regression that causes our workarounds to fail, but their +// std forms now appear to be compliant. +#if defined(_MSC_VER) && !defined(__clang__) && (_MSC_VER >= 1920) + +template <typename T> +using is_copy_assignable = std::is_copy_assignable<T>; + +template <typename T> +using is_move_assignable = std::is_move_assignable<T>; + +#else + template <typename T> struct is_copy_assignable : type_traits_internal::is_detected< type_traits_internal::IsCopyAssignableImpl, T> { @@ -155,6 +167,8 @@ struct is_move_assignable : type_traits_internal::is_detected< type_traits_internal::IsMoveAssignableImpl, T> { }; +#endif + // void_t() // // Ignores the type of any its arguments and returns `void`. In general, this |