From a881e3bcfa41d15650441cb8faf7fad943ea8d14 Mon Sep 17 00:00:00 2001
From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Tue, 2 Feb 2021 22:00:07 -0700
Subject: [PATCH] Move an exception to the top of a function.

---
 source/distributed/tria.cc | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/source/distributed/tria.cc b/source/distributed/tria.cc
index b0d447cf9f..65d4bd03ed 100644
--- a/source/distributed/tria.cc
+++ b/source/distributed/tria.cc
@@ -3213,6 +3213,11 @@ namespace parallel
     Triangulation<dim, spacedim>::copy_triangulation(
       const dealii::Triangulation<dim, spacedim> &other_tria)
     {
+      Assert(other_tria.n_levels() == 1,
+             ExcMessage(
+               "Parallel distributed triangulations can only be copied, "
+               "if they are not refined!"));
+
       try
         {
           dealii::parallel::TriangulationBase<dim, spacedim>::
@@ -3232,11 +3237,6 @@ namespace parallel
       // separate)
       triangulation_has_content = true;
 
-      Assert(other_tria.n_levels() == 1,
-             ExcMessage(
-               "Parallel distributed triangulations can only be copied, "
-               "if they are not refined!"));
-
       if (const dealii::parallel::distributed::Triangulation<dim, spacedim>
             *other_tria_x =
               dynamic_cast<const dealii::parallel::distributed::
-- 
2.39.5