Mod: Fix several compiler warnings

src/Mod/Material/Gui/DlgInspectAppearance.cpp

@@ -183,8 +183,6 @@ void DlgInspectAppearance::update(std::vector<Gui::ViewProvider*>& views)
                         auto& material = (prop->getValues())[index];
                         auto* tab = makeAppearanceTab(material);
                         ui->tabAppearance->addTab(tab, QString::number(index));
-
-                        index++;
                     }
                 }
             }

src/Mod/Part/App/AppPartPy.cpp

@@ -901,19 +901,21 @@ private:
         pcDoc->recompute();
         return Py::asObject(pcFeature->getPyObject());
 #else
-        App::Document *pcSrcDoc = nullptr;
         TopoShape shape;
-        if (PyObject_TypeCheck(pcObj, &TopoShapePy::Type))
+        if (PyObject_TypeCheck(pcObj, &TopoShapePy::Type)) {
             shape = *static_cast<TopoShapePy*>(pcObj)->getTopoShapePtr();
-        else if (PyObject_TypeCheck(pcObj, &GeometryPy::Type))
+        }
+        else if (PyObject_TypeCheck(pcObj, &GeometryPy::Type)) {
             shape = static_cast<GeometryPy*>(pcObj)->getGeometryPtr()->toShape();
+        }
         else if (PyObject_TypeCheck(pcObj, &App::DocumentObjectPy::Type)) {
             auto obj = static_cast<App::DocumentObjectPy*>(pcObj)->getDocumentObjectPtr();
-            pcSrcDoc = obj->getDocument();
             shape = Feature::getTopoShape(obj);
         }
-        else
+        else {
             throw Py::TypeError("Expects argument of type DocumentObject, Shape, or Geometry");
+        }
+
         Part::Feature *pcFeature = static_cast<Part::Feature*>(pcDoc->addObject("Part::Feature", name));
         // copy the data
         pcFeature->Shape.setValue(shape);

src/Mod/Part/App/TopoShapeExpansion.cpp

@@ -689,6 +689,7 @@ void TopoShape::copyElementMap(const TopoShape& topoShape, const char* op)
     setMappedChildElements(children);
 }
 
+#ifndef FC_USE_TNP_FIX
 namespace
 {
 void warnIfLogging()
@@ -722,7 +723,7 @@ void checkAndMatchHasher(TopoShape& topoShape1, const TopoShape& topoShape2)
     }
 }
 }  // namespace
-
+#endif
 
 // TODO: Refactor mapSubElementTypeForShape to reduce complexity
 void TopoShape::mapSubElementTypeForShape(const TopoShape& other,
@@ -4454,7 +4455,7 @@ TopoShape& TopoShape::makeElementRevolve(const TopoShape& _base,
 
 TopoShape& TopoShape::makeElementRevolution(const TopoShape& _base,
                                             const gp_Ax1& axis,
-                                            double d,
+                                            [[maybe_unused]]double d,
                                             const TopoDS_Face& supportface,
                                             const TopoDS_Face& uptoface,
                                             const char* face_maker,

src/Mod/PartDesign/App/FeatureRevolution.cpp

@@ -194,7 +194,6 @@ App::DocumentObjectExecReturn* Revolution::execute()
             if (!Ex.More()) {
                 supportface = TopoDS_Face();
             }
-            RevolMode mode = RevolMode::None;
 #ifdef FC_USE_TNP_FIX
             // revolve the face to a solid
             //            TopoShape result(0);
@@ -205,6 +204,7 @@ App::DocumentObjectExecReturn* Revolution::execute()
                 return new App::DocumentObjectExecReturn("Could not revolve the sketch!");
             }
 #else
+            RevolMode mode = RevolMode::None;
             generateRevolution(result,
                                base.getShape(),
                                sketchshape.getShape(),

src/Mod/TechDraw/Gui/QGIViewDimension.cpp

@@ -218,9 +218,8 @@ void QGIDatumLabel::snapPosition(QPointF& pos)
                 else if (type == "DistanceY") {
                     ip2 = Base::Vector2d(ip1.x, ip2.y);
                 }
-                Base::Vector2d imid = (ip1 + ip2) * 0.5;
+
                 Base::Vector2d idir = ip2 - ip1;
-                Base::Vector2d inormal = Base::Vector2d(-idir.y, idir.x);
 
                 if (type == "Distance" && fabs(dir.x * idir.y - dir.y * idir.x) > Precision::Confusion()) {
                     //dimensions not parallel
@@ -2222,6 +2221,10 @@ void QGIViewDimension::drawAreaExecutive(const Base::Vector2d& centerPoint, doub
                                            double centerOverhang, int standardStyle,
                                            int renderExtent, bool flipArrow) const
 {
+    Q_UNUSED(area)
+    Q_UNUSED(centerOverhang)
+    Q_UNUSED(renderExtent)
+
     QPainterPath areaPath;
 
     Base::Vector2d labelCenter(labelRectangle.GetCenter());
@@ -2718,9 +2721,6 @@ void QGIViewDimension::drawArea(TechDraw::DrawViewDimension* dimension,
         fromQtGui(mapRectFromItem(datumLabel, datumLabel->boundingRect())));
     areaPoint areaPoint = dimension->getAreaPoint();
 
-    double endAngle;
-    double startRotation;
-
     drawAreaExecutive(
         fromQtApp(areaPoint.center), areaPoint.area, labelRectangle, 0.0, viewProvider->StandardAndStyle.getValue(),
         viewProvider->RenderingExtent.getValue(), viewProvider->FlipArrowheads.getValue());

src/Mod/TechDraw/Gui/ViewProviderLeader.cpp

@@ -196,6 +196,7 @@ void ViewProviderLeader::handleChangedPropertyType(Base::XMLReader &reader, cons
 
 bool ViewProviderLeader::onDelete(const std::vector<std::string> & parameters)
 {
+    Q_UNUSED(parameters)
     // a leader line cannot be deleted if it has a child weld symbol
 
     // get childs