From: Timo Heister <timo.heister@gmail.com>
Date: Sat, 3 Dec 2022 14:07:52 +0000 (-0500)
Subject: also fix test
X-Git-Tag: v9.5.0-rc1~757^2~1
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bfa1d52e33e4a602ede1ff6ae933274d3ca221f7;p=dealii.git

also fix test
---

diff --git a/tests/sundials/step-77.cc b/tests/sundials/step-77.cc
index 32444acc3d..7585e58fb0 100644
--- a/tests/sundials/step-77.cc
+++ b/tests/sundials/step-77.cc
@@ -273,7 +273,7 @@ namespace Step77
                                     evaluation_point_gradients[q]);
 
             for (unsigned int i = 0; i < dofs_per_cell; ++i)
-              cell_residual(i) =
+              cell_residual(i) +=
                 (fe_values.shape_grad(i, q)      // \nabla \phi_i
                  * coeff                         // * a_n
                  * evaluation_point_gradients[q] // * \nabla u_n