From 987d12e3d1c888641b5cdb315ecb03397361166b Mon Sep 17 00:00:00 2001
From: Sebastian Proell <sebastian.proell@tum.de>
Date: Sun, 14 May 2023 15:58:50 +0200
Subject: [PATCH] Fix step-77 with NOX: zero out residual

---
 tests/trilinos/step-77-with-nox.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tests/trilinos/step-77-with-nox.cc b/tests/trilinos/step-77-with-nox.cc
index cfc82d5436..4035f74038 100644
--- a/tests/trilinos/step-77-with-nox.cc
+++ b/tests/trilinos/step-77-with-nox.cc
@@ -245,6 +245,8 @@ namespace Step77
     const Vector<double> &evaluation_point,
     Vector<double> &      residual)
   {
+    residual = 0;
+
     const QGauss<dim> quadrature_formula(fe.degree + 1);
     FEValues<dim>     fe_values(fe,
                             quadrature_formula,
-- 
2.39.5