Merge pull request #7713 from deguio/fixL1T0

protection agains zero size vector
cms-sw · Feb 13, 2015 · c368fa6 · c368fa6
2 parents 7b14dc5 + 1a79cc1
commit c368fa6
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/DQMOffline/L1Trigger/src/L1TRate_Offline.cc b/DQMOffline/L1Trigger/src/L1TRate_Offline.cc
@@ -507,8 +507,11 @@ void L1TRate_Offline::analyze(const Event & iEvent, const EventSetup & eventSetu
         if(gtFdlVectorData[i].bxInEvent()==0){indexFDL=i; break;}
       }
 
-      int CurrentPrescalesIndex  = gtFdlVectorData[indexFDL].gtPrescaleFactorIndexAlgo(); // <###### WE NEED TO STORE THIS
-      m_lsPrescaleIndex[eventLS] = CurrentPrescalesIndex;
+      if(gtFdlVectorData.size() != 0)
+        {
+	  int CurrentPrescalesIndex  = gtFdlVectorData[indexFDL].gtPrescaleFactorIndexAlgo(); // <###### WE NEED TO STORE THIS
+	  m_lsPrescaleIndex[eventLS] = CurrentPrescalesIndex;
+	}
 
     }