From: Peter Munch <peterrmuench@gmail.com>
Date: Thu, 22 Jun 2023 20:59:18 +0000 (+0200)
Subject: MFTools::categorize_by_boundary_ids: use iterator
X-Git-Tag: v9.5.0-rc1~51^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F15441%2Fhead;p=dealii.git

MFTools::categorize_by_boundary_ids: use iterator
---

diff --git a/include/deal.II/matrix_free/tools.h b/include/deal.II/matrix_free/tools.h
index f83790bb16..a3b7ac947e 100644
--- a/include/deal.II/matrix_free/tools.h
+++ b/include/deal.II/matrix_free/tools.h
@@ -378,13 +378,13 @@ namespace MatrixFreeTools
       unsigned int c_num = 0;
       for (unsigned int i = 0; i < GeometryInfo<dim>::faces_per_cell; ++i)
         {
-          auto &face = *cell->face(i);
-          if (face.at_boundary() && !cell->has_periodic_neighbor(i))
+          const auto face = cell->face(i);
+          if (face->at_boundary() && !cell->has_periodic_neighbor(i))
             c_num +=
               factors[i] * (1 + std::distance(bids.begin(),
                                               std::find(bids.begin(),
                                                         bids.end(),
-                                                        face.boundary_id())));
+                                                        face->boundary_id())));
         }
       return c_num;
     };