From 480dd25a6ab562aa49a3c7f75f6467aa53e6d4f0 Mon Sep 17 00:00:00 2001
From: coppedis <coppedis@f7af4fe6-9843-0410-8265-dc069ae4e863>
Date: Fri, 19 Jun 2009 13:56:01 +0000
Subject: [PATCH] Protection added

---
 ZDC/AliZDCv3.cxx | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/ZDC/AliZDCv3.cxx b/ZDC/AliZDCv3.cxx
index d7dd9f3c887..fdc428a1143 100644
--- a/ZDC/AliZDCv3.cxx
+++ b/ZDC/AliZDCv3.cxx
@@ -2484,15 +2484,18 @@ void AliZDCv3::StepManager()
 	//
 	Int_t curTrackN = gAlice->GetMCApp()->GetCurrentTrackNumber();
         TParticle *part = gAlice->GetMCApp()->Particle(curTrackN);
-        Int_t imo = part->GetFirstMother();
-        TParticle * pmot = gAlice->GetMCApp()->Particle(imo);
-	
 	hits[10] = part->GetPdgCode();
-        hits[11] = pmot->GetPdgCode();
 	//printf("\t PDGCode = %d\n", part->GetPdgCode());
+	//
+        Int_t imo = part->GetFirstMother();
+	if(imo>0){
+          TParticle * pmot = gAlice->GetMCApp()->Particle(imo);
+          hits[11] = pmot->GetPdgCode();
+	}
+	else hits[11]=0;
         //
 	hits[12] = 1.0e09*gMC->TrackTime(); // in ns!
-	//printf("\t TrackTime = %f\n", hits[11]);
+	//printf("\t TrackTime = %f\n", hits[12]);
 
 	AddHit(curTrackN, vol, hits);
 	
-- 
2.43.0