diff --git a/DataFormats/GEMDigi/interface/GEMOptoHybrid.h b/DataFormats/GEMDigi/interface/GEMOptoHybrid.h
index 499bbb2f4b65d..ea606c39a4fdc 100644
--- a/DataFormats/GEMDigi/interface/GEMOptoHybrid.h
+++ b/DataFormats/GEMDigi/interface/GEMOptoHybrid.h
@@ -73,7 +73,7 @@ class GEMOptoHybrid {
     };
   };
 
-  GEMOptoHybrid() : ch_(0), ct_(0), existVFATs_(0) {}
+  GEMOptoHybrid() : ver_(0), ch_(0), ct_(0), existVFATs_(0) {}
   ~GEMOptoHybrid() { vfatd_.clear(); }
 
   void setVersion(uint8_t i) { ver_ = i; }
diff --git a/L1Trigger/GlobalMuonTrigger/src/L1MuGlobalMuonTrigger.cc b/L1Trigger/GlobalMuonTrigger/src/L1MuGlobalMuonTrigger.cc
index 7db2f39a91080..9ad613a6080f5 100644
--- a/L1Trigger/GlobalMuonTrigger/src/L1MuGlobalMuonTrigger.cc
+++ b/L1Trigger/GlobalMuonTrigger/src/L1MuGlobalMuonTrigger.cc
@@ -71,10 +71,11 @@ L1MuGlobalMuonTrigger::L1MuGlobalMuonTrigger(const edm::ParameterSet& ps) {
   m_ExtendedCands.reserve(20);
 
   // set configuration parameters
-  if (not m_config) {
+  if (!std::atomic_load(&m_config)) {  // Atomically load m_config
     auto temp = std::make_shared<L1MuGMTConfig>(ps);
-    std::shared_ptr<L1MuGMTConfig> empty;
-    std::atomic_compare_exchange_strong(&m_config, &empty, temp);
+    std::shared_ptr<L1MuGMTConfig> empty = nullptr;  // Explicit nullptr for CAS
+    std::atomic_compare_exchange_strong_explicit(
+        &m_config, &empty, temp, std::memory_order_acq_rel, std::memory_order_acquire);
   }
   m_writeLUTsAndRegs = ps.getUntrackedParameter<bool>("WriteLUTsAndRegs", false);
 
@@ -122,10 +123,11 @@ L1MuGlobalMuonTrigger::L1MuGlobalMuonTrigger(const edm::ParameterSet& ps) {
     edm::LogVerbatim("GMT_info") << "creating GMT Sorter";
   m_Sorter = new L1MuGMTSorter(*this);  // barrel
 
-  if (not m_db) {
+  if (!std::atomic_load(&m_db)) {  // Atomically load m_db
     auto temp = std::make_shared<L1MuGMTDebugBlock>(m_config->getBxMin(), m_config->getBxMax());
-    std::shared_ptr<L1MuGMTDebugBlock> empty;
-    std::atomic_compare_exchange_strong(&m_db, &empty, temp);
+    std::shared_ptr<L1MuGMTDebugBlock> empty = nullptr;  // Explicit nullptr for CAS
+    std::atomic_compare_exchange_strong_explicit(
+        &m_db, &empty, temp, std::memory_order_acq_rel, std::memory_order_acquire);
   }
   usesResource("L1MuGlobalMuonTrigger");
   ///EventSetup Tokens
diff --git a/L1Trigger/L1TMuonEndCap/interface/bdt/Tree.h b/L1Trigger/L1TMuonEndCap/interface/bdt/Tree.h
index ea16c9cc7b09b..f9c18ebdb6fde 100644
--- a/L1Trigger/L1TMuonEndCap/interface/bdt/Tree.h
+++ b/L1Trigger/L1TMuonEndCap/interface/bdt/Tree.h
@@ -20,7 +20,7 @@ namespace emtf {
 
     Tree(const Tree& tree);
     Tree& operator=(const Tree& tree);
-    Tree(Tree&& tree);
+    Tree(Tree&& tree) noexcept;
 
     void setRootNode(Node* sRootNode);
     Node* getRootNode();
diff --git a/L1Trigger/L1TMuonEndCap/src/bdt/Tree.cc b/L1Trigger/L1TMuonEndCap/src/bdt/Tree.cc
index 8d691967febac..3eaac170bf48a 100644
--- a/L1Trigger/L1TMuonEndCap/src/bdt/Tree.cc
+++ b/L1Trigger/L1TMuonEndCap/src/bdt/Tree.cc
@@ -135,15 +135,14 @@ void Tree::findLeafs(Node* local_root, std::list<Node*>& tn) {
     findLeafs(local_root->getRightDaughter(), tn);
 }
 
-Tree::Tree(Tree&& tree) {
-  if (rootNode)
-    delete rootNode;  // this line is the only reason not to use default move constructor
-  rootNode = tree.rootNode;
-  terminalNodes = std::move(tree.terminalNodes);
-  numTerminalNodes = tree.numTerminalNodes;
-  rmsError = tree.rmsError;
-  boostWeight = tree.boostWeight;
-  xmlVersion = tree.xmlVersion;
+Tree::Tree(Tree&& tree) noexcept
+    : rootNode(tree.rootNode),
+      terminalNodes(std::move(tree.terminalNodes)),
+      numTerminalNodes(tree.numTerminalNodes),
+      rmsError(tree.rmsError),
+      boostWeight(tree.boostWeight),
+      xmlVersion(tree.xmlVersion) {
+  tree.rootNode = nullptr;  // this line is the only reason not to use default move constructor
 }
 
 //////////////////////////////////////////////////////////////////////////
diff --git a/TrackPropagation/SteppingHelixPropagator/interface/SteppingHelixStateInfo.h b/TrackPropagation/SteppingHelixPropagator/interface/SteppingHelixStateInfo.h
index b58e9d645a1ae..a44b5db90c919 100644
--- a/TrackPropagation/SteppingHelixPropagator/interface/SteppingHelixStateInfo.h
+++ b/TrackPropagation/SteppingHelixPropagator/interface/SteppingHelixStateInfo.h
@@ -36,7 +36,8 @@ class SteppingHelixStateInfo {
   static const std::string ResultName[MAX_RESULT];
 
   SteppingHelixStateInfo()
-      : path_(0),
+      : q(0),
+        path_(0),
         radPath_(0),
         dir(0),
         magVol(nullptr),
diff --git a/Validation/RecoParticleFlow/bin/PlotCompareUtility.cpp b/Validation/RecoParticleFlow/bin/PlotCompareUtility.cpp
index 28860d627adf9..53b5f9683e553 100644
--- a/Validation/RecoParticleFlow/bin/PlotCompareUtility.cpp
+++ b/Validation/RecoParticleFlow/bin/PlotCompareUtility.cpp
@@ -25,7 +25,7 @@ PlotCompareUtility::PlotCompareUtility(std::string Reference,
                                        std::string RefBasePath,
                                        std::string RefPrefix) {
   // open TFiles
-  cout << refFile << " " << newFile << endl;
+  cout << Reference << " " << New << endl;
   refFile = new TFile(Reference.c_str(), "READ");
   newFile = new TFile(New.c_str(), "READ");