From 6b5dd9c2b7cdfe772b57f2c65954e96749430293 Mon Sep 17 00:00:00 2001
From: Francesco Prino <prino@to.infn.it>
Date: Thu, 4 Mar 2021 00:41:00 +0100
Subject: [PATCH] Protection for FPE in QA

---
 PWGPP/ITS/AliAnalysisTaskITSTrackingCheck.cxx | 1 +
 1 file changed, 1 insertion(+)

diff --git a/PWGPP/ITS/AliAnalysisTaskITSTrackingCheck.cxx b/PWGPP/ITS/AliAnalysisTaskITSTrackingCheck.cxx
index 5689b8f65a5..a52eefd25d4 100644
--- a/PWGPP/ITS/AliAnalysisTaskITSTrackingCheck.cxx
+++ b/PWGPP/ITS/AliAnalysisTaskITSTrackingCheck.cxx
@@ -3069,6 +3069,7 @@ Double_t AliAnalysisTaskITSTrackingCheck::ParticleImpParMC(TParticle *part,
 
 
   if(TMath::Abs(px)<0.000001) px=0.000001;     
+  if(pt<0.000001) return -999999.;
   Double_t rAnd=((10./2.99792458)*pt/bzT)*100.;
   Double_t center[3],d0;
   center[0]=vx-(1./charge)*rAnd*(py/pt);