diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7a0ac672b..3753ccab3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -113,14 +113,14 @@ if ((CMAKE_BUILD_TYPE STREQUAL "Debug" OR CMAKE_BUILD_TYPE STREQUAL "RelWithDebI
         else()
             # AppleClang and Clang
             message(STATUS "Address Sanitizer available on Clang")
-            set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -fno-omit-frame-pointer")
-            set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address -fno-omit-frame-pointer")
+            set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -fno-omit-frame-pointer -fsanitize=undefined -fno-sanitize-recover=null")
+            set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address -fno-omit-frame-pointer -fsanitize=undefined -fno-sanitize-recover=null")
         endif()
     elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
         # GCC
         message(STATUS "Address Sanitizer available on GCC")
-        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -fno-omit-frame-pointer")
-        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address -fno-omit-frame-pointer")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -fno-omit-frame-pointer -fsanitize=undefined -fno-sanitize-recover")
+        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fsanitize=address -fno-omit-frame-pointer -fsanitize=undefined -fno-sanitize-recover")
         link_libraries("asan")
     elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
         message(STATUS "Address Sanitizer available on MSVC")
diff --git a/launcher/launch/LogModel.h b/launcher/launch/LogModel.h
index 18e51d7e3..bc08053fb 100644
--- a/launcher/launch/LogModel.h
+++ b/launcher/launch/LogModel.h
@@ -32,12 +32,12 @@ class LogModel : public QAbstractListModel {
 
    private /* types */:
     struct entry {
-        MessageLevel::Enum level;
-        QString line;
+        MessageLevel::Enum level = MessageLevel::Enum::Unknown;
+        QString line = {};
     };
 
    private: /* data */
-    QVector<entry> m_content;
+    QVector<entry> m_content = {};
     int m_maxLines = 1000;
     // first line in the circular buffer
     int m_firstLine = 0;
diff --git a/launcher/ui/widgets/CheckComboBox.cpp b/launcher/ui/widgets/CheckComboBox.cpp
index 41def3ba1..a84e6a8fa 100644
--- a/launcher/ui/widgets/CheckComboBox.cpp
+++ b/launcher/ui/widgets/CheckComboBox.cpp
@@ -40,7 +40,7 @@ class CheckComboModel : public QIdentityProxyModel {
     {
         if (role == Qt::CheckStateRole) {
             auto txt = QIdentityProxyModel::data(index, Qt::DisplayRole).toString();
-            return checked.contains(txt) ? Qt::Checked : Qt::Unchecked;
+            return m_checked.contains(txt) ? Qt::Checked : Qt::Unchecked;
         }
         if (role == Qt::DisplayRole)
             return QIdentityProxyModel::data(index, Qt::DisplayRole);
@@ -50,10 +50,10 @@ class CheckComboModel : public QIdentityProxyModel {
     {
         if (role == Qt::CheckStateRole) {
             auto txt = QIdentityProxyModel::data(index, Qt::DisplayRole).toString();
-            if (checked.contains(txt)) {
-                checked.removeOne(txt);
+            if (m_checked.contains(txt)) {
+                m_checked.removeOne(txt);
             } else {
-                checked.push_back(txt);
+                m_checked.push_back(txt);
             }
             emit dataChanged(index, index);
             emit checkStateChanged();
@@ -61,13 +61,13 @@ class CheckComboModel : public QIdentityProxyModel {
         }
         return QIdentityProxyModel::setData(index, value, role);
     }
-    QStringList getChecked() { return checked; }
+    QStringList getChecked() { return m_checked; }
 
    signals:
     void checkStateChanged();
 
    private:
-    QStringList checked;
+    QStringList m_checked = {};
 };
 
 CheckComboBox::CheckComboBox(QWidget* parent) : QComboBox(parent), m_separator(", ")
@@ -92,7 +92,7 @@ void CheckComboBox::setSourceModel(QAbstractItemModel* new_model)
 
 void CheckComboBox::hidePopup()
 {
-    if (!containerMousePress)
+    if (!m_containerMousePress)
         QComboBox::hidePopup();
 }
 
@@ -138,7 +138,7 @@ bool CheckComboBox::eventFilter(QObject* receiver, QEvent* event)
         }
         case QEvent::MouseButtonPress: {
             auto ev = static_cast<QMouseEvent*>(event);
-            containerMousePress = ev && view()->indexAt(ev->pos()).isValid();
+            m_containerMousePress = ev && view()->indexAt(ev->pos()).isValid();
             break;
         }
         case QEvent::Wheel:
diff --git a/launcher/ui/widgets/CheckComboBox.h b/launcher/ui/widgets/CheckComboBox.h
index 876c6e3e1..02516982f 100644
--- a/launcher/ui/widgets/CheckComboBox.h
+++ b/launcher/ui/widgets/CheckComboBox.h
@@ -58,7 +58,7 @@ class CheckComboBox : public QComboBox {
     void toggleCheckState(int index);
 
    private:
-    QString m_default_text;
-    QString m_separator;
-    bool containerMousePress;
+    QString m_default_text = {};
+    QString m_separator = {};
+    bool m_containerMousePress = false;
 };
\ No newline at end of file