From: Daniel Arndt <arndtd@ornl.gov>
Date: Sat, 6 Feb 2021 15:58:06 +0000 (-0500)
Subject: Deal with no MPI in sundials/n_vector.templates.h
X-Git-Tag: v9.3.0-rc1~489^2~1
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=88aa6ba72248584f2fb095fcbe0812cf29abfcfd;p=dealii.git

Deal with no MPI in sundials/n_vector.templates.h
---

diff --git a/include/deal.II/sundials/n_vector.templates.h b/include/deal.II/sundials/n_vector.templates.h
index a45c4683f9..e7b50b5dae 100644
--- a/include/deal.II/sundials/n_vector.templates.h
+++ b/include/deal.II/sundials/n_vector.templates.h
@@ -279,7 +279,12 @@ namespace SUNDIALS
       inline void *
       get_communicator_as_void_ptr(N_Vector v)
       {
+#  ifndef DEAL_II_WITH_MPI
+        (void)v;
+        return nullptr;
+#  else
         return get_communicator<VectorType>(v);
+#  endif
       }
 
     } // namespace NVectorOperations
@@ -487,7 +492,7 @@ template <typename VectorType,
           std::enable_if_t<is_serial_vector<VectorType>::value, int>>
 MPI_Comm SUNDIALS::internal::NVectorOperations::get_communicator(N_Vector)
 {
-  return nullptr;
+  return {};
 }