From c2d68bc63490a0fba2a8465e23b0f5a559f82f0d Mon Sep 17 00:00:00 2001
From: Andrea Bocci <andrea.bocci@cern.ch>
Date: Sun, 21 Apr 2024 12:13:44 +0200
Subject: [PATCH] Skip invalid HCAL PF rechits

---
 .../plugins/alpaka/PFRecHitTopologyESProducer.cc                | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/RecoParticleFlow/PFRecHitProducer/plugins/alpaka/PFRecHitTopologyESProducer.cc b/RecoParticleFlow/PFRecHitProducer/plugins/alpaka/PFRecHitTopologyESProducer.cc
index f94db2aecc362..33abb62375707 100644
--- a/RecoParticleFlow/PFRecHitProducer/plugins/alpaka/PFRecHitTopologyESProducer.cc
+++ b/RecoParticleFlow/PFRecHitProducer/plugins/alpaka/PFRecHitTopologyESProducer.cc
@@ -104,6 +104,8 @@ namespace ALPAKA_ACCELERATOR_NAMESPACE {
           for (auto const detId : geom.getValidDetIds(CAL::kDetectorId, subdet)) {
             const uint32_t denseId = CAL::detId2denseId(detId);
             for (uint32_t n = 0; n < 8; n++) {
+              if (view.neighbours(denseId)[n] == 0xffffffff)
+                continue;
               const ::reco::PFRecHitsTopologyNeighbours& neighboursOfNeighbour =
                   view.neighbours(view.neighbours(denseId)[n]);
               if (std::find(neighboursOfNeighbour.begin(), neighboursOfNeighbour.end(), denseId) ==