From: Peter Munch <peterrmuench@gmail.com>
Date: Thu, 26 Sep 2019 08:09:43 +0000 (+0200)
Subject: Fix a bug introduced in #8783
X-Git-Tag: v9.2.0-rc1~1021^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F8862%2Fhead;p=dealii.git

Fix a bug introduced in #8783
---

diff --git a/source/distributed/tria_base.cc b/source/distributed/tria_base.cc
index e2c91bfa8d..bad673e21e 100644
--- a/source/distributed/tria_base.cc
+++ b/source/distributed/tria_base.cc
@@ -394,6 +394,9 @@ namespace parallel
       // loop over all periodic face pairs
       for (const auto &pair : this->get_periodic_face_map())
         {
+          if (pair.first.first->level() != pair.second.first.first->level())
+            continue;
+
           const auto face_a = pair.first.first->face(pair.first.second);
           const auto face_b =
             pair.second.first.first->face(pair.second.first.second);