From: David Wells <wellsd2@rpi.edu>
Date: Sat, 27 Jan 2018 18:25:16 +0000 (-0500)
Subject: Use constant references instead of copies.
X-Git-Tag: v9.0.0-rc1~505^2~1
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=714732d9416124cb9a33f4e5ebc375be114c1abc;p=dealii.git

Use constant references instead of copies.

This was found by cppcheck.
---

diff --git a/include/deal.II/base/timer.h b/include/deal.II/base/timer.h
index 6ba90bf7fe..75d64f2cbf 100644
--- a/include/deal.II/base/timer.h
+++ b/include/deal.II/base/timer.h
@@ -945,7 +945,7 @@ inline
 void
 Timer::print_last_lap_wall_time_data(StreamType &stream) const
 {
-  const Utilities::MPI::MinMaxAvg statistic = get_last_lap_wall_time_data();
+  const Utilities::MPI::MinMaxAvg &statistic = get_last_lap_wall_time_data();
   stream << statistic.max << " wall,"
          << " max @" << statistic.max_index << ", min=" << statistic.min << " @"
          << statistic.min_index << ", avg=" << statistic.avg << std::endl;
diff --git a/include/deal.II/numerics/data_out_dof_data.h b/include/deal.II/numerics/data_out_dof_data.h
index 6b05d428ac..6dff5d8004 100644
--- a/include/deal.II/numerics/data_out_dof_data.h
+++ b/include/deal.II/numerics/data_out_dof_data.h
@@ -1016,7 +1016,7 @@ DataOut_DoFData<DoFHandlerType,patch_dim,patch_space_dim>::
 merge_patches (const DataOut_DoFData<DoFHandlerType2,patch_dim,patch_space_dim> &source,
                const Point<patch_space_dim> &shift)
 {
-  const std::vector<Patch> source_patches = source.get_patches ();
+  const std::vector<Patch> &source_patches = source.get_patches ();
   Assert ((patches.size () != 0) &&
           (source_patches.size () != 0),
           ExcMessage ("When calling this function, both the current "