From d59c4923697fe583a4312c7a0c42ec872a6b9c10 Mon Sep 17 00:00:00 2001
From: Stefano Zampini <stefano.zampini@gmail.com>
Date: Mon, 16 Jan 2023 12:18:09 +0300
Subject: [PATCH] remove NULL

---
 source/lac/petsc_parallel_block_vector.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/lac/petsc_parallel_block_vector.cc b/source/lac/petsc_parallel_block_vector.cc
index 88360c6d81..3c7f03831d 100644
--- a/source/lac/petsc_parallel_block_vector.cc
+++ b/source/lac/petsc_parallel_block_vector.cc
@@ -123,7 +123,7 @@ namespace PETScWrappers
           PETSC_COMM_SELF;
 
       ierr =
-        VecCreateNest(comm, n, NULL, pcomponents.data(), &petsc_nest_vector);
+        VecCreateNest(comm, n, nullptr, pcomponents.data(), &petsc_nest_vector);
       AssertThrow(ierr == 0, ExcPETScError(ierr));
     }
   } // namespace MPI
-- 
2.39.5