Fix compilation with gcc-10

diff --git a/include/deal.II/differentiation/ad/ad_helpers.h b/include/deal.II/differentiation/ad/ad_helpers.h
index a7271a41e31beec11b6408f5063339b85267c7c0..d1ed05a5a42c8405a38e6db379d1f48dd6ddfdfa 100644 (file)
--- a/include/deal.II/differentiation/ad/ad_helpers.h
+++ b/include/deal.II/differentiation/ad/ad_helpers.h
@@ -3841,7 +3841,8 @@ namespace Differentiation
               typename ScalarType>
     template <typename ExtractorType>
     typename internal::Extractor<dim, ExtractorType>::template tensor_type<
-      typename HelperBase<ADNumberTypeCode, ScalarType>::ad_type>
+      typename PointLevelFunctionsBase<dim, ADNumberTypeCode, ScalarType>::
+        ad_type>
     PointLevelFunctionsBase<dim, ADNumberTypeCode, ScalarType>::
       get_sensitive_variables(const ExtractorType &extractor) const
     {