Fixed unused variables warning

diff --git a/source/lac/petsc_parallel_sparse_matrix.cc b/source/lac/petsc_parallel_sparse_matrix.cc
index b1cb645e96dd30d9a4aa652f07ba74977746ca65..7bbd637180cc6d5e6511998dc6d9f000599e5b61 100644 (file)
--- a/source/lac/petsc_parallel_sparse_matrix.cc
+++ b/source/lac/petsc_parallel_sparse_matrix.cc
@@ -642,6 +642,12 @@ namespace PETScWrappers
       AssertThrow(ierr == 0, ExcPETScError(ierr));
 #  else
       {
+        // Use this to avoid unused variables warning
+        (void)local_rows;
+        (void)local_active_rows;
+        (void)local_columns;
+        (void)local_active_columns;
+        (void)sparsity_pattern;
         AssertThrow(false,
                     ExcMessage(
                       "BDDC preconditioner requires PETSc 3.10.0 or newer"));