From a98ae5e1541ced17899a6a6be8f5403b5754a267 Mon Sep 17 00:00:00 2001
From: Martin Kronbichler <martin.kronbichler@rub.de>
Date: Thu, 11 Jul 2024 13:42:08 +0200
Subject: [PATCH] Clear ghost values in a vector

---
 examples/step-87/step-87.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/examples/step-87/step-87.cc b/examples/step-87/step-87.cc
index aeee8d067c..5d51f55fc9 100644
--- a/examples/step-87/step-87.cc
+++ b/examples/step-87/step-87.cc
@@ -831,6 +831,7 @@ namespace Step87
               VectorTools::point_values<dim>(rpe,
                                              dof_handler_background,
                                              velocity);
+            velocity.zero_out_ghost_values();
 
             for (unsigned int i = 0, c = 0;
                  i < immersed_support_points.locally_owned_size() / dim;
-- 
2.39.5