From 5ccd10e779cbbc953af640c3db9ba140e62166fb Mon Sep 17 00:00:00 2001
From: David Wells <wellsd2@rpi.edu>
Date: Sat, 5 May 2018 22:02:31 -0400
Subject: [PATCH] Fix a test to not write past the end of an array.

---
 tests/matrix_free/matrix_vector_faces_18.cc | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/tests/matrix_free/matrix_vector_faces_18.cc b/tests/matrix_free/matrix_vector_faces_18.cc
index f5b5c6ec6c..036731fd68 100644
--- a/tests/matrix_free/matrix_vector_faces_18.cc
+++ b/tests/matrix_free/matrix_vector_faces_18.cc
@@ -80,13 +80,16 @@ void test ()
   refinements_left[1] = 5;
   refinements_right[1] = 5;
   refinements_bottom[1] = 1;
-  refinements_left[2] = 4;
-  refinements_right[2] = 4;
-  refinements_bottom[2] = 4;
   refinements_left[0] = 10;
   refinements_right[0] = 20;
   refinements_bottom[0] = 20;
 
+  if (dim == 3)
+    {
+      refinements_left[2] = 4;
+      refinements_right[2] = 4;
+      refinements_bottom[2] = 4;
+    }
   GridGenerator::subdivided_hyper_rectangle(left, refinements_left,left_one,left_two,false);
   GridGenerator::subdivided_hyper_rectangle(right, refinements_right,right_one,right_two,false);
   GridGenerator::subdivided_hyper_rectangle(bottom, refinements_bottom,bottom_one,bottom_two,false);
-- 
2.39.5