From 6ad0bcee95be08bd28e06cb91f1271d6a16f70ea Mon Sep 17 00:00:00 2001
From: jonjenssen <jon@soundsoft.no>
Date: Wed, 29 Jun 2022 13:35:28 +0200
Subject: [PATCH] Fix crash if base time step has undefined data

---
 .../ReservoirDataModel/RigCaseCellResultCalculator.cpp         | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ApplicationLibCode/ReservoirDataModel/RigCaseCellResultCalculator.cpp b/ApplicationLibCode/ReservoirDataModel/RigCaseCellResultCalculator.cpp
index c35e6826e2..ac00907433 100644
--- a/ApplicationLibCode/ReservoirDataModel/RigCaseCellResultCalculator.cpp
+++ b/ApplicationLibCode/ReservoirDataModel/RigCaseCellResultCalculator.cpp
@@ -148,9 +148,11 @@ bool RigCaseCellResultCalculator::computeDifference( RigEclipseCaseData*
         {
             cvf::ref<RigResultAccessor> sourceResultAccessor =
                 RigResultAccessorFactory::createFromResultAddress( sourceCase, gridIdx, porosityModel, fIdx, nativeAddress );
+            if ( sourceResultAccessor.isNull() ) continue;
 
             cvf::ref<RigResultModifier> resultModifier =
                 RigResultModifierFactory::createResultModifier( sourceCase, gridIdx, porosityModel, fIdx, address );
+            if ( resultModifier.isNull() ) continue;
 
             size_t baseFrameIdx = fIdx;
             if ( address.isDeltaTimeStepActive() )
@@ -160,6 +162,7 @@ bool RigCaseCellResultCalculator::computeDifference( RigEclipseCaseData*
 
             cvf::ref<RigResultAccessor> baseResultAccessor =
                 RigResultAccessorFactory::createFromResultAddress( baseCase, gridIdx, porosityModel, baseFrameIdx, nativeAddress );
+            if ( baseResultAccessor.isNull() ) continue;
 
             for ( size_t localGridCellIdx = 0; localGridCellIdx < grid->cellCount(); localGridCellIdx++ )
             {