From dce73eb9f90900ba263d53a6106026c0e630a9aa Mon Sep 17 00:00:00 2001
From: Bart Janssens <bart@bartjanssens.org>
Date: Sun, 14 Jan 2018 14:47:30 +0100
Subject: [PATCH] [COMP] Fix invalid nullptr comparison for MPI Comm

Issue #271
---
 cf3/common/PE/Comm.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cf3/common/PE/Comm.hpp b/cf3/common/PE/Comm.hpp
index a1ab17e55..69d7ca637 100644
--- a/cf3/common/PE/Comm.hpp
+++ b/cf3/common/PE/Comm.hpp
@@ -80,7 +80,7 @@ class Common_API Comm : public boost::noncopyable {
   bool is_finalized() const;
   /// Checks if the PE is in valid state
   /// should be initialized and Communicator pointer is set
-  bool is_active() const { return is_initialized() && !is_finalized() && is_not_null(m_comm); }
+  bool is_active() const { return is_initialized() && !is_finalized() && m_comm != MPI_COMM_NULL; }
 
   /// overload the barrier function
   void barrier();