diff --git a/modules/gui/src/cpp/QtWorkspaceBrowser.cpp b/modules/gui/src/cpp/QtWorkspaceBrowser.cpp
index 9be1f5e7f4..3da2de75c1 100644
--- a/modules/gui/src/cpp/QtWorkspaceBrowser.cpp
+++ b/modules/gui/src/cpp/QtWorkspaceBrowser.cpp
@@ -245,7 +245,6 @@ QtWorkspaceBrowser::updateVariables()
     m_tableWidget->setRowCount((int)variablesList.size());
 
     for (int i = 0; i < variablesList.size(); i++) {
-        bool isPersistent = m_context->isVariablePersistent(wstring_to_utf8(variablesList[i]));
         bool isGlobal = m_context->isVariableGlobal(wstring_to_utf8(variablesList[i]));
         ArrayOf* variable = m_context->lookupVariable(wstring_to_utf8(variablesList[i]));
         if (variable) {
diff --git a/modules/hdf5/src/cpp/h5SaveLoadHelpers.cpp b/modules/hdf5/src/cpp/h5SaveLoadHelpers.cpp
index 4f712c2564..29be58402d 100644
--- a/modules/hdf5/src/cpp/h5SaveLoadHelpers.cpp
+++ b/modules/hdf5/src/cpp/h5SaveLoadHelpers.cpp
@@ -267,7 +267,6 @@ getNelsonDimensions(hid_t fid, const std::string& location, const std::string& v
         return res;
     }
     hid_t type = H5Aget_type(attr_id);
-    hsize_t sDim = H5Tget_size(type);
     uint64* ptrUint64 = nullptr;
     try {
         ptrUint64 = new uint64[(size_t)dims[1]];
diff --git a/modules/mex/src/cpp/MxStruct.cpp b/modules/mex/src/cpp/MxStruct.cpp
index c38b933b66..e2da5a2e4b 100644
--- a/modules/mex/src/cpp/MxStruct.cpp
+++ b/modules/mex/src/cpp/MxStruct.cpp
@@ -168,10 +168,6 @@ mxAddField(mxArray* pm, const char* fieldname)
 void
 mxRemoveField(mxArray* pm, int fieldnumber)
 {
-    if (mxIsStruct(pm)) {
-        auto* ptr = (Nelson::ArrayOf*)pm->ptr;
-        Nelson::ArrayOf* qp = (Nelson::ArrayOf*)ptr->getDataPointer();
-    }
     auto* ptr = (Nelson::ArrayOf*)pm->ptr;
     Nelson::stringVector fieldnames = ptr->getFieldNames();
     size_t fieldCount = ptr->getFieldNames().size();
diff --git a/modules/os_functions/src/cpp/SystemCommand.cpp b/modules/os_functions/src/cpp/SystemCommand.cpp
index 8950b6305d..2ea87ca073 100644
--- a/modules/os_functions/src/cpp/SystemCommand.cpp
+++ b/modules/os_functions/src/cpp/SystemCommand.cpp
@@ -69,7 +69,6 @@ ParallelSystemCommand(const wstringVector& commands, const std::vector<uint64>&
     size_t nbCommands = commands.size();
     results.resize(nbCommands);
     std::vector<SystemCommandTask*> taskList;
-
 #if defined(__APPLE__) or (defined(_WIN32) && not defined(_WIN64))
     for (ompIndexType k = 0; k < (ompIndexType)nbCommands; k++) {
         SystemCommandTask* task = new SystemCommandTask();
@@ -84,8 +83,6 @@ ParallelSystemCommand(const wstringVector& commands, const std::vector<uint64>&
         taskList[k]->evaluateCommand(commands[k], timeouts[k]);
     }
 #else
-    size_t nbThreadsMax = (size_t)NelsonConfiguration::getInstance()->getMaxNumCompThreads();
-    size_t nbThreads = std::min(nbCommands, nbThreadsMax);
     std::vector<std::thread> threadList;
     for (size_t k = 0; k < nbCommands; k++) {
         try {
diff --git a/modules/sparse/src/cpp/HorzCatSparseDouble.cpp b/modules/sparse/src/cpp/HorzCatSparseDouble.cpp
index 431110a77c..c1476b32ab 100644
--- a/modules/sparse/src/cpp/HorzCatSparseDouble.cpp
+++ b/modules/sparse/src/cpp/HorzCatSparseDouble.cpp
@@ -51,7 +51,6 @@ HorzCatSparseDouble(ArrayOf A, ArrayOf B)
         Dimensions dimsB = B.getDimensions();
         indexType newRowsSize = dimsA.getRows();
         indexType newColumnsSize = dimsA.getColumns() + dimsB.getColumns();
-        indexType newSize = newColumnsSize * newRowsSize;
         Dimensions dimsC = Dimensions(newRowsSize, newColumnsSize);
         try {
             spMatC = new Eigen::SparseMatrix<doublecomplex, 0, signedIndexType>(
@@ -73,7 +72,6 @@ HorzCatSparseDouble(ArrayOf A, ArrayOf B)
         Dimensions dimsB = B.getDimensions();
         indexType newRowsSize = dimsA.getRows();
         indexType newColumnsSize = dimsA.getColumns() + dimsB.getColumns();
-        indexType newSize = newColumnsSize * newRowsSize;
         Dimensions dimsC = Dimensions(newRowsSize, newColumnsSize);
         try {
             spMatC
diff --git a/modules/sparse/src/cpp/HorzCatSparseLogical.cpp b/modules/sparse/src/cpp/HorzCatSparseLogical.cpp
index 0aa4420a1c..7419fb5626 100644
--- a/modules/sparse/src/cpp/HorzCatSparseLogical.cpp
+++ b/modules/sparse/src/cpp/HorzCatSparseLogical.cpp
@@ -46,7 +46,6 @@ HorzCatSparseLogical(ArrayOf A, ArrayOf B)
     Eigen::SparseMatrix<logical, 0, signedIndexType>* spMatC;
     indexType newColumnsSize = dimsA.getColumns() + dimsB.getColumns();
     indexType newRowsSize = dimsA.getRows();
-    indexType newSize = newColumnsSize * newRowsSize;
     Dimensions dimsC = Dimensions(newRowsSize, newColumnsSize);
     try {
         spMatC = new Eigen::SparseMatrix<logical, 0, signedIndexType>(newRowsSize, newColumnsSize);
diff --git a/modules/sparse/src/cpp/SparseType.cpp b/modules/sparse/src/cpp/SparseType.cpp
index 0029281f48..6ba08e0b65 100644
--- a/modules/sparse/src/cpp/SparseType.cpp
+++ b/modules/sparse/src/cpp/SparseType.cpp
@@ -336,6 +336,13 @@ Eigen_SparseMatrixConstructor(NelsonType dclass, indexType rows, indexType cols,
     switch (dclass) {
     case NLS_LOGICAL: {
         Eigen::SparseMatrix<logical, 0, signedIndexType>* spMat = nullptr;
+        try {
+            spMat = new Eigen::SparseMatrix<logical, 0, signedIndexType>(rows, cols);
+        } catch (const std::bad_alloc&) {
+            spMat = nullptr;
+            Error(ERROR_MEMORY_ALLOCATION);
+        }
+        return spMat;
     } break;
     case NLS_DOUBLE: {
         Eigen::SparseMatrix<double, 0, signedIndexType>* spMat = nullptr;
@@ -345,18 +352,17 @@ Eigen_SparseMatrixConstructor(NelsonType dclass, indexType rows, indexType cols,
             spMat = nullptr;
             Error(ERROR_MEMORY_ALLOCATION);
         }
-        indexType X = 0;
-        indexType Y = 0;
-        for (auto& i : m) {
-            for (auto& j : i) {
-                Eigen::SparseMatrix<double, 0, signedIndexType>* src
-                    = (Eigen::SparseMatrix<double, 0, signedIndexType>*)(j.getDataPointer());
-            }
-        }
         return spMat;
     } break;
     case NLS_DCOMPLEX: {
-        Eigen::SparseMatrix<doublecomplex, 0, signedIndexType>* spMat = nullptr;
+        Eigen::SparseMatrix<std::complex<double>, 0, signedIndexType>* spMat = nullptr;
+        try {
+            spMat = new Eigen::SparseMatrix<std::complex<double>, 0, signedIndexType>(rows, cols);
+        } catch (const std::bad_alloc&) {
+            spMat = nullptr;
+            Error(ERROR_MEMORY_ALLOCATION);
+        }
+        return spMat;
     } break;
     default: {
         Error(_W("Unsupported type in SparseMatrixConstructor."));
@@ -888,7 +894,6 @@ Eigen_makeSparseFromIJVComplex(indexType rows, indexType cols, indexType nnz, in
     auto* pV = (double*)cp;
     indexType q = 0;
     for (indexType k = 0; k < nnz; k++) {
-        bool isZeroValue = false;
         /* Currently , for compatibility, complex values are not cumulative */
         if (bScalarV) {
             if (pV[0] || pV[1]) {
diff --git a/modules/stream_manager/src/cpp/FscanFunction.cpp b/modules/stream_manager/src/cpp/FscanFunction.cpp
index 76c1ca65ef..abc88b6b30 100644
--- a/modules/stream_manager/src/cpp/FscanFunction.cpp
+++ b/modules/stream_manager/src/cpp/FscanFunction.cpp
@@ -170,7 +170,6 @@ FscanF(FILE* filepointer, const std::string& format, const std::string& encoding
         char* dp = buff;
         char* np;
         char sv;
-        bool as64bit = false;
         while (*dp) {
             np = dp;
             while ((*dp) && (*dp != '%')) {
diff --git a/modules/stream_manager/src/cpp/SscanfFunction.cpp b/modules/stream_manager/src/cpp/SscanfFunction.cpp
index 131f63eacf..73ffa76c1a 100644
--- a/modules/stream_manager/src/cpp/SscanfFunction.cpp
+++ b/modules/stream_manager/src/cpp/SscanfFunction.cpp
@@ -346,7 +346,6 @@ FwscanF(FILE* filepointer, const std::wstring& format, double m, double n, bool
         wchar_t* dp = buff;
         wchar_t* np;
         wchar_t sv;
-        bool as64bit = false;
         while (*dp) {
             pos = 0;
             np = dp;