From 1ae9691b9f412d70fe6757ce39d258492c34e437 Mon Sep 17 00:00:00 2001
From: Matthias Kleiner <matthias.kleiner@cern.ch>
Date: Thu, 20 Mar 2025 09:17:59 +0100
Subject: [PATCH] TPC: Adding check for empty IDCs

---
 .../include/TPCWorkflow/TPCFourierTransformAggregatorSpec.h  | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Detectors/TPC/workflow/include/TPCWorkflow/TPCFourierTransformAggregatorSpec.h b/Detectors/TPC/workflow/include/TPCWorkflow/TPCFourierTransformAggregatorSpec.h
index 956e9c899cebc..a05440dfbbf4d 100644
--- a/Detectors/TPC/workflow/include/TPCWorkflow/TPCFourierTransformAggregatorSpec.h
+++ b/Detectors/TPC/workflow/include/TPCWorkflow/TPCFourierTransformAggregatorSpec.h
@@ -253,6 +253,11 @@ class TPCFourierTransformAggregatorSpec : public o2::framework::Task
   void makeTPCScaler(DataAllocator& output, const bool eos)
   {
     LOGP(info, "Making TPC scalers");
+    if (mTPCScalerCont.idcs.empty()) {
+      LOGP(warning, "No IDCs received for TPC scaler creation");
+      return;
+    }
+
     // check if IDC scalers can be created - check length of continous received IDCs
     std::vector<std::pair<long, long>> times;
     times.reserve(mTPCScalerCont.idcs.size());