From dd4b2a8f108aadb82f4a73b6bee8be2a0f10e4aa Mon Sep 17 00:00:00 2001
From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Thu, 9 Nov 2017 07:52:03 -0700
Subject: [PATCH] Minor adjustments to one test.

---
 tests/vector_tools/integrate_difference_01.cc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tests/vector_tools/integrate_difference_01.cc b/tests/vector_tools/integrate_difference_01.cc
index 3814f96155..409028cd05 100644
--- a/tests/vector_tools/integrate_difference_01.cc
+++ b/tests/vector_tools/integrate_difference_01.cc
@@ -28,6 +28,8 @@
 #include <deal.II/grid/grid_refinement.h>
 #include <deal.II/fe/fe_q.h>
 #include <deal.II/fe/fe_system.h>
+#include <deal.II/base/signaling_nan.h>
+
 
 using namespace dealii;
 
@@ -50,6 +52,8 @@ public:
       return p[0]*p[0]+p[1]*p[1];
     if (c==2)
       return p[2]+p[0]*p[1];
+    else
+      return numbers::signaling_nan<double>();
   }
 };
 
@@ -108,5 +112,4 @@ int main (int argc, char **argv)
 {
   initlog();
   test<2>();
-
 }
-- 
2.39.5