diff --git a/src/App/ObjectIdentifier.cpp b/src/App/ObjectIdentifier.cpp
index aa1112b9c9..cc50192f29 100644
--- a/src/App/ObjectIdentifier.cpp
+++ b/src/App/ObjectIdentifier.cpp
@@ -159,6 +159,7 @@ ObjectIdentifier::ObjectIdentifier(const Property &prop, int index)
     , documentNameSet(false)
     , documentObjectNameSet(false)
     , localProperty(false)
+    , _hash(0)
 {
     DocumentObject * docObj = freecad_dynamic_cast<DocumentObject>(prop.getContainer());
 
diff --git a/src/Gui/ComboView.cpp b/src/Gui/ComboView.cpp
index 6163581f45..4b50014c7e 100644
--- a/src/Gui/ComboView.cpp
+++ b/src/Gui/ComboView.cpp
@@ -76,6 +76,10 @@ ComboView::ComboView(bool showModel, Gui::Document* pcDocument, QWidget *parent)
         splitter->addWidget(prop);
         modelIndex = tabs->addTab(splitter,tr("Model"));
     }
+    else {
+        tree = nullptr;
+        prop = nullptr;
+    }
 
     // task panel
     taskPanel = new Gui::TaskView::TaskView(this);
diff --git a/src/Gui/GestureNavigationStyle.cpp b/src/Gui/GestureNavigationStyle.cpp
index 662bd2eed7..5877512b0f 100644
--- a/src/Gui/GestureNavigationStyle.cpp
+++ b/src/Gui/GestureNavigationStyle.cpp
@@ -93,7 +93,7 @@ namespace Gui {
 class NS::Event : public sc::event<NS::Event>
 {
 public:
-    Event():flags(new Flags){}
+    Event():inventor_event(nullptr), flags(new Flags){}
     virtual ~Event(){}
 
     void log() const {
diff --git a/src/Gui/SelectionView.cpp b/src/Gui/SelectionView.cpp
index a2ac856590..4459b02d60 100644
--- a/src/Gui/SelectionView.cpp
+++ b/src/Gui/SelectionView.cpp
@@ -56,6 +56,7 @@ using namespace Gui::DockWnd;
 SelectionView::SelectionView(Gui::Document* pcDocument, QWidget *parent)
   : DockWindow(pcDocument,parent)
   , SelectionObserver(false,0)
+  , x(0.0f), y(0.0f), z(0.0f)
 {
     setWindowTitle(tr("Selection View"));
 
diff --git a/src/Gui/SoFCUnifiedSelection.h b/src/Gui/SoFCUnifiedSelection.h
index e07005c62c..45f1757f76 100644
--- a/src/Gui/SoFCUnifiedSelection.h
+++ b/src/Gui/SoFCUnifiedSelection.h
@@ -369,7 +369,7 @@ protected:
     static SoFCSelectionRoot *ShapeColorNode;
     bool overrideColor = false;
     SbColor colorOverride;
-    float transOverride;
+    float transOverride = 0.0f;
     SoColorPacker shapeColorPacker;
 
     bool doActionPrivate(Stack &stack, SoAction *);
diff --git a/src/Gui/Tree.cpp b/src/Gui/Tree.cpp
index 496c85bdf1..22a0710351 100644
--- a/src/Gui/Tree.cpp
+++ b/src/Gui/Tree.cpp
@@ -2268,7 +2268,7 @@ struct UpdateDisabler {
     // Note! DO NOT block signal here, or else
     // QTreeWidgetItem::setChildIndicatorPolicy() does not work
     UpdateDisabler(QWidget &w, int &blocked)
-        :widget(w),blocked(blocked)
+        : widget(w), blocked(blocked), visible(false), focus(false)
     {
         if(++blocked > 1)
             return;
diff --git a/src/Gui/ViewProviderDocumentObject.cpp b/src/Gui/ViewProviderDocumentObject.cpp
index 685ee58606..65f8b1acde 100644
--- a/src/Gui/ViewProviderDocumentObject.cpp
+++ b/src/Gui/ViewProviderDocumentObject.cpp
@@ -71,6 +71,7 @@ PROPERTY_SOURCE(Gui::ViewProviderDocumentObject, Gui::ViewProvider)
 ViewProviderDocumentObject::ViewProviderDocumentObject()
   : pcObject(nullptr)
   , pcDocument(nullptr)
+  , _UpdatingView(false)
 {
     ADD_PROPERTY(DisplayMode,((long)0));
     ADD_PROPERTY(Visibility,(true));
diff --git a/src/Mod/Fem/Gui/ViewProviderFemPostFunction.cpp b/src/Mod/Fem/Gui/ViewProviderFemPostFunction.cpp
index d57938df8e..dda2720fa0 100644
--- a/src/Mod/Fem/Gui/ViewProviderFemPostFunction.cpp
+++ b/src/Mod/Fem/Gui/ViewProviderFemPostFunction.cpp
@@ -137,7 +137,8 @@ void ViewProviderFemPostFunctionProvider::updateSize() {
 
 PROPERTY_SOURCE(FemGui::ViewProviderFemPostFunction, Gui::ViewProviderDocumentObject)
 
-ViewProviderFemPostFunction::ViewProviderFemPostFunction() : m_autoscale(false), m_isDragging(false)
+ViewProviderFemPostFunction::ViewProviderFemPostFunction()
+    : m_manip(nullptr), m_autoscale(false), m_isDragging(false), m_autoRecompute(false)
 {
 
     ADD_PROPERTY_TYPE(AutoScaleFactorX, (1), "AutoScale", App::Prop_Hidden, "Automatic scaling factor");
diff --git a/src/Mod/Mesh/Gui/RemeshGmsh.cpp b/src/Mod/Mesh/Gui/RemeshGmsh.cpp
index dd5dc0a4dd..7a660a7f19 100644
--- a/src/Mod/Mesh/Gui/RemeshGmsh.cpp
+++ b/src/Mod/Mesh/Gui/RemeshGmsh.cpp
@@ -51,6 +51,7 @@ public:
     Private(QWidget* parent)
       : gmsh(parent)
     {
+        /* coverity[uninit_ctor] Members of ui are set in setupUI() */
     }
 
     void appendText(const QString& text, bool error) {
diff --git a/src/Mod/Part/Gui/SoBrepEdgeSet.cpp b/src/Mod/Part/Gui/SoBrepEdgeSet.cpp
index 3b9875f211..58f787230e 100644
--- a/src/Mod/Part/Gui/SoBrepEdgeSet.cpp
+++ b/src/Mod/Part/Gui/SoBrepEdgeSet.cpp
@@ -77,8 +77,9 @@ void SoBrepEdgeSet::initClass()
 }
 
 SoBrepEdgeSet::SoBrepEdgeSet()
-    :selContext(std::make_shared<SelContext>())
-    ,selContext2(std::make_shared<SelContext>())
+    : selContext(std::make_shared<SelContext>())
+    , selContext2(std::make_shared<SelContext>())
+    , packedColor(0)
 {
     SO_NODE_CONSTRUCTOR(SoBrepEdgeSet);
 }
diff --git a/src/Mod/Part/Gui/SoBrepFaceSet.cpp b/src/Mod/Part/Gui/SoBrepFaceSet.cpp
index abe40f5297..b000c03966 100644
--- a/src/Mod/Part/Gui/SoBrepFaceSet.cpp
+++ b/src/Mod/Part/Gui/SoBrepFaceSet.cpp
@@ -177,6 +177,7 @@ SoBrepFaceSet::SoBrepFaceSet()
 
     selContext = std::make_shared<SelContext>();
     selContext2 = std::make_shared<SelContext>();
+    packedColor = 0;
 
     pimpl.reset(new VBO);
 }
diff --git a/src/Mod/Part/Gui/SoBrepPointSet.cpp b/src/Mod/Part/Gui/SoBrepPointSet.cpp
index ff5ee35875..3aac67c8ee 100644
--- a/src/Mod/Part/Gui/SoBrepPointSet.cpp
+++ b/src/Mod/Part/Gui/SoBrepPointSet.cpp
@@ -72,8 +72,9 @@ void SoBrepPointSet::initClass()
 }
 
 SoBrepPointSet::SoBrepPointSet()
-    :selContext(std::make_shared<SelContext>())
-    ,selContext2(std::make_shared<SelContext>())
+    : selContext(std::make_shared<SelContext>())
+    , selContext2(std::make_shared<SelContext>())
+    , packedColor(0)
 {
     SO_NODE_CONSTRUCTOR(SoBrepPointSet);
 }
diff --git a/src/Mod/TechDraw/App/DrawPage.cpp b/src/Mod/TechDraw/App/DrawPage.cpp
index 6e12e07386..fb56c9acfd 100644
--- a/src/Mod/TechDraw/App/DrawPage.cpp
+++ b/src/Mod/TechDraw/App/DrawPage.cpp
@@ -101,6 +101,7 @@ DrawPage::DrawPage(void)
 
     Scale.setConstraints(&scaleRange);
     balloonPlacing = false;
+    balloonParent = nullptr;
 }
 
 DrawPage::~DrawPage()
diff --git a/src/Mod/TechDraw/Gui/QGILeaderLine.cpp b/src/Mod/TechDraw/Gui/QGILeaderLine.cpp
index 23a516f88b..f357decca8 100644
--- a/src/Mod/TechDraw/Gui/QGILeaderLine.cpp
+++ b/src/Mod/TechDraw/Gui/QGILeaderLine.cpp
@@ -74,8 +74,14 @@ using namespace TechDraw;
 
 //**************************************************************
 QGILeaderLine::QGILeaderLine() :
+    m_parentItem(nullptr),
+    m_lineWidth(1.0),
     m_lineColor(Qt::black),
+    m_lineStyle(Qt::SolidLine),
+    m_editPathStyle(Qt::SolidLine),
     m_hasHover(false),
+    m_saveX(0.0),
+    m_saveY(0.0),
     m_blockDraw(false)
 
 {
diff --git a/src/Mod/TechDraw/Gui/QGIViewBalloon.cpp b/src/Mod/TechDraw/Gui/QGIViewBalloon.cpp
index a97154326d..eb9012e7b5 100644
--- a/src/Mod/TechDraw/Gui/QGIViewBalloon.cpp
+++ b/src/Mod/TechDraw/Gui/QGIViewBalloon.cpp
@@ -97,7 +97,9 @@ QGIBalloonLabel::QGIBalloonLabel()
     m_labelText = new QGCustomText();
     m_labelText->setParentItem(this);
 
+    verticalSep = false;
     hasHover = false;
+    parent = nullptr;
 }
 
 QVariant QGIBalloonLabel::itemChange(GraphicsItemChange change, const QVariant &value)
@@ -249,8 +251,12 @@ void QGIBalloonLabel::setColor(QColor c)
 
 //**************************************************************
 QGIViewBalloon::QGIViewBalloon() :
+    dvBalloon(nullptr),
     hasHover(false),
-    m_lineWidth(0.0)
+    m_lineWidth(0.0),
+    m_obtuse(false),
+    parent(nullptr),
+    m_dragInProgress(false)
 {
     m_ctrl = false;
 
diff --git a/src/Mod/TechDraw/Gui/QGIViewDimension.cpp b/src/Mod/TechDraw/Gui/QGIViewDimension.cpp
index 6b9200fdc7..5eab949ef7 100644
--- a/src/Mod/TechDraw/Gui/QGIViewDimension.cpp
+++ b/src/Mod/TechDraw/Gui/QGIViewDimension.cpp
@@ -95,6 +95,7 @@ enum SnapMode{
 
 QGIDatumLabel::QGIDatumLabel()
 {
+    verticalSep = false;
     posX = 0;
     posY = 0;
 
diff --git a/src/Mod/TechDraw/Gui/TaskActiveView.cpp b/src/Mod/TechDraw/Gui/TaskActiveView.cpp
index a7f123e4cf..86b426d1cb 100644
--- a/src/Mod/TechDraw/Gui/TaskActiveView.cpp
+++ b/src/Mod/TechDraw/Gui/TaskActiveView.cpp
@@ -68,7 +68,9 @@ using namespace TechDrawGui;
 TaskActiveView::TaskActiveView(TechDraw::DrawPage* pageFeat) :
     ui(new Ui_TaskActiveView),
     m_pageFeat(pageFeat),
-    m_symbolFeat(nullptr)
+    m_symbolFeat(nullptr),
+    m_btnOK(nullptr),
+    m_btnCancel(nullptr)
 {
 //    Base::Console().Message("TAV::TAV() - create mode\n");
     if  (m_pageFeat == nullptr)  {
diff --git a/src/Mod/TechDraw/Gui/TaskCenterLine.cpp b/src/Mod/TechDraw/Gui/TaskCenterLine.cpp
index 182bdf80d3..0ea4b05191 100644
--- a/src/Mod/TechDraw/Gui/TaskCenterLine.cpp
+++ b/src/Mod/TechDraw/Gui/TaskCenterLine.cpp
@@ -81,7 +81,11 @@ TaskCenterLine::TaskCenterLine(TechDraw::DrawViewPart* partFeat,
     m_partFeat(partFeat),
     m_basePage(page),
     m_createMode(false),
+    m_btnOK(nullptr),
+    m_btnCancel(nullptr),
     m_edgeName(edgeName),
+    m_extendBy(0.0),
+    m_clIdx(0),
     m_type(0),          //0 - Face, 1 - 2 Lines, 2 - 2 points
     m_mode(0),           //0 - vertical, 1 - horizontal, 2 - aligned
     m_editMode(editMode)
@@ -114,7 +118,13 @@ TaskCenterLine::TaskCenterLine(TechDraw::DrawViewPart* partFeat,
     m_partFeat(partFeat),
     m_basePage(page),
     m_createMode(true),
+    m_btnOK(nullptr),
+    m_btnCancel(nullptr),
     m_subNames(subNames),
+    m_extendBy(0.0),
+    m_geomIndex(0),
+    m_cl(nullptr),
+    m_clIdx(0),
     m_type(0),          //0 - Face, 1 - 2 Lines, 2 - 2 points
     m_mode(0),           //0 - vertical, 1 - horizontal, 2 - aligned
     m_editMode(editMode)
diff --git a/src/Mod/TechDraw/Gui/TaskCosVertex.cpp b/src/Mod/TechDraw/Gui/TaskCosVertex.cpp
index e43b095ac5..89d33f0305 100644
--- a/src/Mod/TechDraw/Gui/TaskCosVertex.cpp
+++ b/src/Mod/TechDraw/Gui/TaskCosVertex.cpp
@@ -72,10 +72,19 @@ using namespace TechDrawGui;
 TaskCosVertex::TaskCosVertex(TechDraw::DrawViewPart* baseFeat,
                                TechDraw::DrawPage* page) :
     ui(new Ui_TaskCosVertex),
+    blockUpdate(false),
     m_tracker(nullptr),
+    m_mdi(nullptr),
+    m_scene(nullptr),
+    m_view(nullptr),
     m_baseFeat(baseFeat),
     m_basePage(page),
+    m_qgParent(nullptr),
+    m_trackerMode(QGTracker::None),
+    m_saveContextPolicy(Qt::DefaultContextMenu),
     m_inProgressLock(false),
+    m_btnOK(nullptr),
+    m_btnCancel(nullptr),
     m_pbTrackerState(TRACKERPICK),
     m_savePoint(QPointF(0.0,0.0)),
     pointFromTracker(false)
diff --git a/src/Mod/TechDraw/Gui/TaskDetail.cpp b/src/Mod/TechDraw/Gui/TaskDetail.cpp
index a9bcdc2df7..d6f2ebe208 100644
--- a/src/Mod/TechDraw/Gui/TaskDetail.cpp
+++ b/src/Mod/TechDraw/Gui/TaskDetail.cpp
@@ -74,12 +74,21 @@ using namespace Gui;
 //creation constructor
 TaskDetail::TaskDetail(TechDraw::DrawViewPart* baseFeat):
     ui(new Ui_TaskDetail),
+    blockUpdate(false),
+    m_ghost(nullptr),
+    m_mdi(nullptr),
+    m_scene(nullptr),
+    m_view(nullptr),
     m_detailFeat(nullptr),
     m_baseFeat(baseFeat),
     m_basePage(nullptr),
+    m_qgParent(nullptr),
     m_inProgressLock(false),
+    m_btnOK(nullptr),
+    m_btnCancel(nullptr),
     m_saveAnchor(Base::Vector3d(0.0, 0.0, 0.0)),
     m_saveRadius(0.0),
+    m_saved(false),
     m_baseName(std::string()),
     m_pageName(std::string()),
     m_detailName(std::string()),
@@ -143,12 +152,21 @@ TaskDetail::TaskDetail(TechDraw::DrawViewPart* baseFeat):
 //edit constructor
 TaskDetail::TaskDetail(TechDraw::DrawViewDetail* detailFeat):
     ui(new Ui_TaskDetail),
+    blockUpdate(false),
+    m_ghost(nullptr),
+    m_mdi(nullptr),
+    m_scene(nullptr),
+    m_view(nullptr),
     m_detailFeat(detailFeat),
     m_baseFeat(nullptr),
     m_basePage(nullptr),
+    m_qgParent(nullptr),
     m_inProgressLock(false),
+    m_btnOK(nullptr),
+    m_btnCancel(nullptr),
     m_saveAnchor(Base::Vector3d(0.0, 0.0, 0.0)),
     m_saveRadius(0.0),
+    m_saved(false),
     m_baseName(std::string()),
     m_pageName(std::string()),
     m_detailName(std::string()),
diff --git a/src/Mod/TechDraw/Gui/TaskLeaderLine.cpp b/src/Mod/TechDraw/Gui/TaskLeaderLine.cpp
index a4b8739a80..a2e4e59ff2 100644
--- a/src/Mod/TechDraw/Gui/TaskLeaderLine.cpp
+++ b/src/Mod/TechDraw/Gui/TaskLeaderLine.cpp
@@ -73,16 +73,28 @@ using namespace TechDrawGui;
 //ctor for edit
 TaskLeaderLine::TaskLeaderLine(TechDrawGui::ViewProviderLeader* leadVP) :
     ui(new Ui_TaskLeaderLine),
+    blockUpdate(false),
     m_tracker(nullptr),
+    m_mdi(nullptr),
+    m_scene(nullptr),
+    m_view(nullptr),
     m_lineVP(leadVP),
     m_baseFeat(nullptr),
     m_basePage(nullptr),
     m_lineFeat(nullptr),
+    m_qgParent(nullptr),
     m_createMode(false),
     m_leadLine(nullptr),
+    m_trackerMode(QGTracker::None),
+    m_saveContextPolicy(Qt::DefaultContextMenu),
     m_inProgressLock(false),
     m_qgLine(nullptr),
-    m_pbTrackerState(TRACKEREDIT)
+    m_btnOK(nullptr),
+    m_btnCancel(nullptr),
+    m_pbTrackerState(TRACKEREDIT),
+    m_saveX(0.0),
+    m_saveY(0.0),
+    m_haveMdi(false)
 {
     if (m_lineVP == nullptr)  {
         //should be caught in CMD caller
@@ -155,16 +167,28 @@ TaskLeaderLine::TaskLeaderLine(TechDrawGui::ViewProviderLeader* leadVP) :
 TaskLeaderLine::TaskLeaderLine(TechDraw::DrawView* baseFeat,
                                TechDraw::DrawPage* page) :
     ui(new Ui_TaskLeaderLine),
+    blockUpdate(false),
     m_tracker(nullptr),
+    m_mdi(nullptr),
+    m_scene(nullptr),
+    m_view(nullptr),
     m_lineVP(nullptr),
     m_baseFeat(baseFeat),
     m_basePage(page),
     m_lineFeat(nullptr),
+    m_qgParent(nullptr),
     m_createMode(true),
     m_leadLine(nullptr),
+    m_trackerMode(QGTracker::None),
+    m_saveContextPolicy(Qt::DefaultContextMenu),
     m_inProgressLock(false),
     m_qgLine(nullptr),
-    m_pbTrackerState(TRACKERPICK)
+    m_btnOK(nullptr),
+    m_btnCancel(nullptr),
+    m_pbTrackerState(TRACKERPICK),
+    m_saveX(0.0),
+    m_saveY(0.0),
+    m_haveMdi(false)
 {
     if ( (m_basePage == nullptr) ||
          (m_baseFeat == nullptr) )  {
diff --git a/src/Mod/TechDraw/Gui/TaskRichAnno.cpp b/src/Mod/TechDraw/Gui/TaskRichAnno.cpp
index 656809a2b5..ea0c5cc192 100644
--- a/src/Mod/TechDraw/Gui/TaskRichAnno.cpp
+++ b/src/Mod/TechDraw/Gui/TaskRichAnno.cpp
@@ -75,15 +75,23 @@ using namespace TechDrawGui;
 //ctor for edit
 TaskRichAnno::TaskRichAnno(TechDrawGui::ViewProviderRichAnno* annoVP) :
     ui(new Ui_TaskRichAnno),
+    blockUpdate(false),
+    m_view(nullptr),
     m_annoVP(annoVP),
     m_baseFeat(nullptr),
     m_basePage(nullptr),
     m_annoFeat(nullptr),
+    m_qgParent(nullptr),
     m_createMode(false),
+    m_text(nullptr),
+    m_saveContextPolicy(Qt::DefaultContextMenu),
     m_inProgressLock(false),
     m_qgAnno(nullptr),
+    m_btnOK(nullptr),
+    m_btnCancel(nullptr),
     m_textDialog(nullptr),
-    m_rte(nullptr)
+    m_rte(nullptr),
+    m_haveMdi(false)
 {
 //    Base::Console().Message("TRA::TRA() - edit\n");
     if (m_annoVP == nullptr)  {
@@ -142,15 +150,24 @@ TaskRichAnno::TaskRichAnno(TechDrawGui::ViewProviderRichAnno* annoVP) :
 TaskRichAnno::TaskRichAnno(TechDraw::DrawView* baseFeat,
                            TechDraw::DrawPage* page) :
     ui(new Ui_TaskRichAnno),
+    blockUpdate(false),
+    m_mdi(nullptr),
+    m_view(nullptr),
     m_annoVP(nullptr),
     m_baseFeat(baseFeat),
     m_basePage(page),
     m_annoFeat(nullptr),
+    m_qgParent(nullptr),
     m_createMode(true),
+    m_text(nullptr),
+    m_saveContextPolicy(Qt::DefaultContextMenu),
     m_inProgressLock(false),
     m_qgAnno(nullptr),
+    m_btnOK(nullptr),
+    m_btnCancel(nullptr),
     m_textDialog(nullptr),
-    m_rte(nullptr)
+    m_rte(nullptr),
+    m_haveMdi(false)
 {
 //    Base::Console().Message("TRA::TRA() - create\n");
     if (m_basePage == nullptr)  {
diff --git a/src/Mod/TechDraw/Gui/TaskSectionView.cpp b/src/Mod/TechDraw/Gui/TaskSectionView.cpp
index 473e4e3a6f..fe1eb91099 100644
--- a/src/Mod/TechDraw/Gui/TaskSectionView.cpp
+++ b/src/Mod/TechDraw/Gui/TaskSectionView.cpp
@@ -76,7 +76,9 @@ TaskSectionView::TaskSectionView(TechDraw::DrawViewPart* base) :
     ui(new Ui_TaskSectionView),
     m_base(base),
     m_section(nullptr),
+    m_saveScale(0.0),
     m_dirName(""),
+    m_doc(nullptr),
     m_createMode(true),
     m_saved(false),
     m_abort(false)
@@ -110,6 +112,8 @@ TaskSectionView::TaskSectionView(TechDraw::DrawViewSection* section) :
     ui(new Ui_TaskSectionView),
     m_base(nullptr),
     m_section(section),
+    m_saveScale(0.0),
+    m_doc(nullptr),
     m_createMode(false),
     m_saved(false),
     m_abort(false)
diff --git a/src/Mod/TechDraw/Gui/TaskWeldingSymbol.cpp b/src/Mod/TechDraw/Gui/TaskWeldingSymbol.cpp
index f035a2fc39..af3b2f06b9 100644
--- a/src/Mod/TechDraw/Gui/TaskWeldingSymbol.cpp
+++ b/src/Mod/TechDraw/Gui/TaskWeldingSymbol.cpp
@@ -84,6 +84,10 @@ TaskWeldingSymbol::TaskWeldingSymbol(TechDraw::DrawLeaderLine* leader) :
     ui(new Ui_TaskWeldingSymbol),
     m_leadFeat(leader),
     m_weldFeat(nullptr),
+    m_arrowFeat(nullptr),
+    m_otherFeat(nullptr),
+    m_btnOK(nullptr),
+    m_btnCancel(nullptr),
     m_createMode(true),
     m_otherDirty(false)
 {
@@ -115,6 +119,10 @@ TaskWeldingSymbol::TaskWeldingSymbol(TechDraw::DrawWeldSymbol* weld) :
     ui(new Ui_TaskWeldingSymbol),
     m_leadFeat(nullptr),
     m_weldFeat(weld),
+    m_arrowFeat(nullptr),
+    m_otherFeat(nullptr),
+    m_btnOK(nullptr),
+    m_btnCancel(nullptr),
     m_createMode(false),
     m_otherDirty(false)
 {
diff --git a/src/Mod/TechDraw/Gui/TaskWeldingSymbol.h b/src/Mod/TechDraw/Gui/TaskWeldingSymbol.h
index 6702f82bd4..8e62e9c9f3 100644
--- a/src/Mod/TechDraw/Gui/TaskWeldingSymbol.h
+++ b/src/Mod/TechDraw/Gui/TaskWeldingSymbol.h
@@ -65,7 +65,7 @@ class MDIViewPage;
 class TileImage
 {
 public:
-    TileImage() {};
+    TileImage() { init(); }
     ~TileImage() = default;
     bool toBeSaved;
     bool arrowSide;
@@ -82,12 +82,12 @@ public:
         arrowSide = true;
         row = 0;
         col = 0;
-        leftText = "";
-        centerText = "";
-        rightText = "";
-        symbolPath= "";
-        symbolString = "";
-        tileName = "";
+        leftText.clear();
+        centerText.clear();
+        rightText.clear();
+        symbolPath.clear();
+        symbolString.clear();
+        tileName.clear();
     }
 
 };
diff --git a/src/Mod/TechDraw/Gui/ViewProviderPage.cpp b/src/Mod/TechDraw/Gui/ViewProviderPage.cpp
index 4b9262769a..01f03e86f0 100644
--- a/src/Mod/TechDraw/Gui/ViewProviderPage.cpp
+++ b/src/Mod/TechDraw/Gui/ViewProviderPage.cpp
@@ -87,7 +87,8 @@ PROPERTY_SOURCE(TechDrawGui::ViewProviderPage, Gui::ViewProviderDocumentObject)
 ViewProviderPage::ViewProviderPage()
   : m_mdiView(0),
     m_docReady(true),
-    m_pageName("")
+    m_pageName(""),
+    m_graphicsView(nullptr)
 {
     sPixmap = "TechDraw_Tree_Page";
     static const char *group = "Base";