Merge pull request #16335 from bangerth/32-2

Fix mistaken std::move assignment.
dealii · Dec 9, 2023 · 8a9cd37 · 8a9cd37
2 parents 29f9da0 + 37082c5
commit 8a9cd37
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Showing 2 changed files with 9 additions and 6 deletions.
diff --git a/examples/step-31/step-31.cc b/examples/step-31/step-31.cc
@@ -1975,8 +1975,8 @@ namespace Step31
       TrilinosWrappers::MPI::Vector(temperature_solution)};
     temperature_trans.interpolate(x_temperature, tmp);
 
-    temperature_solution     = std::move(tmp[0]);
-    old_temperature_solution = std::move(tmp[1]);
+    temperature_solution     = tmp[0];
+    old_temperature_solution = tmp[1];
 
     // After the solution has been transferred we then enforce the constraints
     // on the transferred solution.

diff --git a/examples/step-32/step-32.cc b/examples/step-32/step-32.cc
@@ -3326,8 +3326,11 @@ namespace Step32
         temperature_constraints.distribute(distributed_temp1);
         temperature_constraints.distribute(distributed_temp2);
 
-        temperature_solution     = std::move(distributed_temp1);
-        old_temperature_solution = std::move(distributed_temp2);
+        temperature_solution     = distributed_temp1;
+        old_temperature_solution = distributed_temp2;
+
+        Assert(old_temperature_solution.has_ghost_elements(),
+               ExcInternalError());
       }
 
       {
@@ -3344,8 +3347,8 @@ namespace Step32
         stokes_constraints.distribute(distributed_stokes);
         stokes_constraints.distribute(old_distributed_stokes);
 
-        stokes_solution     = std::move(distributed_stokes);
-        old_stokes_solution = std::move(old_distributed_stokes);
+        stokes_solution     = distributed_stokes;
+        old_stokes_solution = old_distributed_stokes;
       }
     }
   }