Function AppendToMessage

tensorflow/core/lib/core/errors.h:64–68

// to be several layers of additional context.
template <typename... Args>
void AppendToMessage(::tensorflow::Status* status, Args... args) {
  *status = ::tensorflow::Status(
      status->code(),
      ::tensorflow::strings::StrCat(status->error_message(), "\n\t", args...));
}

// For propagating errors when calling a function.
#define TF_RETURN_IF_ERROR(...)                          \