From f2b086c7c148911ecf48e2c3f1d35225bfd41c78 Mon Sep 17 00:00:00 2001
From: David Wells <wellsd2@rpi.edu>
Date: Sun, 1 Apr 2018 14:41:47 -0400
Subject: [PATCH] Fix an exception type.

The documentation of the function states that we should use
ExcInterpolationNotImplemented.
---
 source/fe/fe_system.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/source/fe/fe_system.cc b/source/fe/fe_system.cc
index 076464baa7..ca306f75f2 100644
--- a/source/fe/fe_system.cc
+++ b/source/fe/fe_system.cc
@@ -1958,7 +1958,9 @@ get_subface_interpolation_matrix (const FiniteElement<dim,spacedim> &x_source_fe
     }
   else
     {
-      Assert(fe_other_system != nullptr, ExcInternalError());
+      // we should have caught this at the start, but check again anyway
+      Assert(fe_other_system != nullptr, (typename FiniteElement<dim,spacedim>::
+                                          ExcInterpolationNotImplemented()));
     }
 }
 
-- 
2.39.5