From 582f111d9e6ea1aea300289faa166b20061444b3 Mon Sep 17 00:00:00 2001
From: Sven Buijssen <sven.buijssen@tu-dortmund.de>
Date: Wed, 13 Apr 2011 07:44:12 +0200
Subject: [PATCH] BUG: Fix for #12043. Detect null arrays and reports errors instead of crashing

---
 Parallel/vtkExodusIIWriter.cxx |   18 +++++++++++++++---
 1 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/Parallel/vtkExodusIIWriter.cxx b/Parallel/vtkExodusIIWriter.cxx
index f26fcc4..10f979d 100644
--- a/Parallel/vtkExodusIIWriter.cxx
+++ b/Parallel/vtkExodusIIWriter.cxx
@@ -1033,7 +1033,11 @@ int vtkExodusIIWriter::ConstructVariableInfoMaps ()
     vtkFieldData *fd = this->FlattenedInput[i]->GetFieldData ();
     for (int j = 0; j < fd->GetNumberOfArrays (); j ++) 
       {
-      const char *name = fd->GetArray (j)->GetName ();
+      char *name = 0;
+      if (fd->GetArray(j))
+        {
+        name = fd->GetArray(j)->GetName();
+        }
       if (name == 0) 
         {
         vtkWarningMacro ("Array in input field data has Null name, cannot output it");
@@ -1076,7 +1080,11 @@ int vtkExodusIIWriter::ConstructVariableInfoMaps ()
     vtkCellData *cd = this->FlattenedInput[i]->GetCellData();
     for (int j = 0; j < cd->GetNumberOfArrays(); j ++) 
       {
-      const char *name = cd->GetArray(j)->GetName ();
+      char *name = 0;
+      if (cd->GetArray(j))
+        {
+        name = cd->GetArray(j)->GetName();
+        }
       if (name == 0)
         {
         vtkWarningMacro ("Array in input cell data has Null name, cannot output it");
@@ -1123,7 +1131,11 @@ int vtkExodusIIWriter::ConstructVariableInfoMaps ()
     vtkPointData *pd = this->FlattenedInput[i]->GetPointData();
     for (int j = 0; j < pd->GetNumberOfArrays(); j ++) 
       {
-      const char *name = pd->GetArray(j)->GetName ();
+      char *name = 0;
+      if (pd->GetArray(j))
+        {
+        name = pd->GetArray(j)->GetName();
+        }
       if (name == 0)
         {
         vtkWarningMacro ("Array in input point data has Null name, cannot output it");
-- 
1.7.4.3