From c2263548ce9b8c316bf5edb51ba619409146a0b2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?V=C3=ADt=20Ku=C4=8Dera?=
 <26327373+vkucera@users.noreply.github.com>
Date: Sat, 7 Nov 2026 18:59:59 +0100
Subject: [PATCH] Fix unused variables, parameters, values

Fixes errors from the following Clang-Tidy categories:

- `clang-analyzer-deadcode.DeadStores`
- `clang-diagnostic-unused-parameter`
- `clang-diagnostic-unused-variable`

Most errors are fixed temporarily by commenting out the unused bits and by adding a `FIXME: unused` comment.

The final fix is to either remove the unused bits or to fix the bugs which has to be done by someone who knows the intended behaviour.
---
 PWGCF/Core/CorrelationContainer.cxx                           | 2 +-
 PWGCF/EbyEFluctuations/Tasks/RobustFluctuationObservables.cxx | 2 +-
 PWGCF/EbyEFluctuations/Tasks/kaonIsospinFluctuations.cxx      | 4 ++--
 PWGCF/Femto3D/Tasks/multEstimator.cxx                         | 2 +-
 .../FemtoUniverse/Tasks/femtoUniversePairTaskTrackNucleus.cxx | 4 ++--
 5 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/PWGCF/Core/CorrelationContainer.cxx b/PWGCF/Core/CorrelationContainer.cxx
index 4590d9403d8..3f326c9940a 100644
--- a/PWGCF/Core/CorrelationContainer.cxx
+++ b/PWGCF/Core/CorrelationContainer.cxx
@@ -626,7 +626,7 @@ TH2* CorrelationContainer::getSumOfRatios(CorrelationContainer* mixed, Correlati
         double finiteBinCorrection = -1.0 / (2 * mTrackEtaCut) * binWidthEta / 2 + 1;
         LOGF(info, "Finite bin correction: %f", finiteBinCorrection);
         mixedNorm /= finiteBinCorrection;
-        mixedNormError /= finiteBinCorrection;
+        // mixedNormError /= finiteBinCorrection; // FIXME: unused
       } else {
         LOGF(error, "ERROR: mTrackEtaCut not set. Finite bin correction cannot be applied. Continuing anyway...");
       }
diff --git a/PWGCF/EbyEFluctuations/Tasks/RobustFluctuationObservables.cxx b/PWGCF/EbyEFluctuations/Tasks/RobustFluctuationObservables.cxx
index c1bc5143b58..1cca2ee484c 100644
--- a/PWGCF/EbyEFluctuations/Tasks/RobustFluctuationObservables.cxx
+++ b/PWGCF/EbyEFluctuations/Tasks/RobustFluctuationObservables.cxx
@@ -1157,7 +1157,7 @@ struct RobustFluctuationObservables {
       orbitSOR = orbitSOR / nOrbitsPerTF * nOrbitsPerTF; // - 1;
       bcSOR = orbitSOR * nBCsPerOrbit;
 
-      magneticField = 1;
+      // magneticField = 1; // FIXME: unused
       static o2::parameters::GRPMagField* grpo = nullptr;
       grpo = ccdb->getForTimeStamp<o2::parameters::GRPMagField>("GLO/Config/GRPMagField", ts);
       if (grpo == nullptr) {
diff --git a/PWGCF/EbyEFluctuations/Tasks/kaonIsospinFluctuations.cxx b/PWGCF/EbyEFluctuations/Tasks/kaonIsospinFluctuations.cxx
index 14ff6c33833..dc6f89f98c7 100644
--- a/PWGCF/EbyEFluctuations/Tasks/kaonIsospinFluctuations.cxx
+++ b/PWGCF/EbyEFluctuations/Tasks/kaonIsospinFluctuations.cxx
@@ -2327,7 +2327,7 @@ struct KaonIsospinFluctuations {
       if (!collision.has_mcCollision()) {
         continue;
       }
-      centrality = -1;
+      // centrality = -1; // FIXME: unused
       const auto& mcColl = collision.mcCollision();
 
       centrality = collision.centFT0C();
@@ -2448,7 +2448,7 @@ struct KaonIsospinFluctuations {
     recoEvent.fill(HIST("recoEvent/ProcessType"), doSimProcessing);
     float centrality = -1;
     for (const auto& mcColl : mcCollisions) {
-      centrality = -1;
+      // centrality = -1; // FIXME: unused
 
       if (cfgVtxZCheck) {
         if (std::abs(mcColl.posZ()) >= cutZvertex) {
diff --git a/PWGCF/Femto3D/Tasks/multEstimator.cxx b/PWGCF/Femto3D/Tasks/multEstimator.cxx
index 1d6b9e845eb..aba6dd2da66 100644
--- a/PWGCF/Femto3D/Tasks/multEstimator.cxx
+++ b/PWGCF/Femto3D/Tasks/multEstimator.cxx
@@ -322,7 +322,7 @@ struct multEstimator {
     tmp_histo_per_event->Reset();
     if (tmp_histo_per_event->GetEntries())
       LOGF(fatal, "not cleared");
-    cadidates_counter = 0;
+    // cadidates_counter = 0; // FIXME: unused
   }
 };
 
diff --git a/PWGCF/FemtoUniverse/Tasks/femtoUniversePairTaskTrackNucleus.cxx b/PWGCF/FemtoUniverse/Tasks/femtoUniversePairTaskTrackNucleus.cxx
index 037c88b9837..98c085a5267 100644
--- a/PWGCF/FemtoUniverse/Tasks/femtoUniversePairTaskTrackNucleus.cxx
+++ b/PWGCF/FemtoUniverse/Tasks/femtoUniversePairTaskTrackNucleus.cxx
@@ -630,7 +630,7 @@ struct FemtoUniversePairTaskTrackNucleus {
 
     if (cfgProcessMP) {
       doSameEvent<false>(thegroupTrack, thegroupNucleus, parts, col.magField(), col.multV0M(), 4, fillQA);
-      fillQA = false;
+      // fillQA = false; // FIXME: unused
     }
   }
   PROCESS_SWITCH(FemtoUniversePairTaskTrackNucleus, processSameEvent, "Enable processing same event", true);
@@ -663,7 +663,7 @@ struct FemtoUniversePairTaskTrackNucleus {
 
     if (cfgProcessMP) {
       doSameEvent<false>(thegroupTrack, thegroupNucleus, parts, col.magField(), col.multV0M(), 4, fillQA);
-      fillQA = false;
+      // fillQA = false; // FIXME: unused
     }
   }
   PROCESS_SWITCH(FemtoUniversePairTaskTrackNucleus, processSameEventMC, "Enable processing same event for Monte Carlo", false);