Merge pull request #16375 from drwells/fix-warning

Fix an unused variable warning.
dealii · Dec 21, 2023 · 02bb9b2 · 02bb9b2
2 parents 4211016 + 22e5943
commit 02bb9b2
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/source/grid/tria_accessor.cc b/source/grid/tria_accessor.cc
@@ -2245,6 +2245,10 @@ void
 CellAccessor<dim, spacedim>::set_direction_flag(
   const bool new_direction_flag) const
 {
+  // Some older compilers (GCC 9) print an unused variable warning about
+  // new_direction_flag when it is only used in a subset of 'if constexpr'
+  // statements
+  (void)new_direction_flag;
   Assert(this->used(), TriaAccessorExceptions::ExcCellNotUsed());
   if constexpr (dim == spacedim)
     Assert(new_direction_flag == true,