From: Niklas Fehn <fehn@lnm.mw.tum.de>
Date: Tue, 22 Feb 2022 15:32:41 +0000 (+0100)
Subject: fix bug
X-Git-Tag: v9.4.0-rc1~451^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F13432%2Fhead;p=dealii.git

fix bug
---

diff --git a/include/deal.II/matrix_free/tensor_product_kernels.h b/include/deal.II/matrix_free/tensor_product_kernels.h
index f0f48b569b..278a6d5533 100644
--- a/include/deal.II/matrix_free/tensor_product_kernels.h
+++ b/include/deal.II/matrix_free/tensor_product_kernels.h
@@ -487,7 +487,7 @@ namespace internal
                     if (add)
                       out[col * stride] += shape_values[col] * in[0];
                     else
-                      out[col * stride] += shape_values[col] * in[0];
+                      out[col * stride] = shape_values[col] * in[0];
                     if (max_derivative > 0)
                       out[col * stride] +=
                         shape_values[col + n_rows] * in[out_stride];