message: Hide MSVC workaround from Clang on Windows
diff: @@ -217,7 +217,7 @@ using ::tensorflow::operator==;
  using ::tensorflow::operator!=;
  } // namespace Eigen
  -#ifdef COMPILER_MSVC
  +#if defined(COMPILER_MSVC) && !defined(__clang__)
  namespace std {
  template <>
  struct hash<Eigen::half> {
  