From 60c3f60146d74a9780932fcdf3344e0fc1543fd5 Mon Sep 17 00:00:00 2001
From: Magne Sjaastad <magne.sjaastad@ceetronsolutions.com>
Date: Fri, 22 Mar 2019 08:21:43 +0100
Subject: [PATCH]  #4178 Ensemble Diff : When well is present in only one
 ensemble, diff causes crash

---
 .../Summary/RimDerivedEnsembleCase.cpp                | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/ApplicationCode/ProjectDataModel/Summary/RimDerivedEnsembleCase.cpp b/ApplicationCode/ProjectDataModel/Summary/RimDerivedEnsembleCase.cpp
index e4218405df..7d6538b846 100644
--- a/ApplicationCode/ProjectDataModel/Summary/RimDerivedEnsembleCase.cpp
+++ b/ApplicationCode/ProjectDataModel/Summary/RimDerivedEnsembleCase.cpp
@@ -18,6 +18,7 @@
 
 #include "RimDerivedEnsembleCase.h"
 
+#include "RiaLogging.h"
 #include "RiaSummaryTools.h"
 #include "RiaTimeHistoryCurveMerger.h"
 
@@ -133,6 +134,16 @@ void RimDerivedEnsembleCase::calculate(const RifEclipseSummaryAddress& address)
     RifSummaryReaderInterface*  reader2 = m_summaryCase2 ? m_summaryCase2->summaryReader() : nullptr;
     if (!reader1 || !reader2 || !parentEnsemble()) return;
 
+    if (!reader1->hasAddress(address) || !reader2->hasAddress(address))
+    {
+        std::string text = address.uiText();
+
+        RiaLogging::warning("Derived Ensemble : At least one of the ensembles does not contain the summary address : " +
+                            QString::fromStdString(text));
+
+        return;
+    }
+
     RiaTimeHistoryCurveMerger   merger;
     std::vector<double>         values1;
     std::vector<double>         values2;