Adding a reminder for coders

[u/mrichter/AliRoot.git] / ANALYSIS / AliAnalysisTaskAODCentralityMaker.cxx

diff --git a/ANALYSIS/AliAnalysisTaskAODCentralityMaker.cxx b/ANALYSIS/AliAnalysisTaskAODCentralityMaker.cxx
index 46ba3587fa56affc4d5bd6488f216b6c64dc82f5..6a3c0e6a42bf137643dd6e89cb8d963485523a9e 100644 (file)
--- a/ANALYSIS/AliAnalysisTaskAODCentralityMaker.cxx
+++ b/ANALYSIS/AliAnalysisTaskAODCentralityMaker.cxx
@@ -45,6 +45,7 @@
 #include "AliGenEventHeader.h"
 #include "AliGenHijingEventHeader.h"
 #include "AliAnalysisTaskAODCentralityMaker.h"
+#include "AliLog.h"
 
 ClassImp(AliAnalysisTaskAODCentralityMaker)
 
@@ -120,9 +121,14 @@ void AliAnalysisTaskAODCentralityMaker::UserCreateOutputObjects()
 //________________________________________________________________________
 void AliAnalysisTaskAODCentralityMaker::UserExec(Option_t */*option*/)
 {
+// User Exec
   AliVEvent*   event = InputEvent();
   AliESDEvent* esd   = dynamic_cast<AliESDEvent*>(event);
-
+  if (!esd) {
+      AliError("No ESD Event");
+      return;
+  }
+  
   Float_t beamEnergy = esd->GetBeamEnergy();
   Int_t   nTracks    = event->GetNumberOfTracks();     
   Int_t   nPmdTracks = esd->GetNumberOfPmdTracks();