diff --git a/rtengine/camconst.cc b/rtengine/camconst.cc
index 5a051bfa2..6b4a36c4b 100644
--- a/rtengine/camconst.cc
+++ b/rtengine/camconst.cc
@@ -180,11 +180,10 @@ CameraConst::parseLevels(CameraConst *cc, int bw, void *ji_)
 CameraConst *
 CameraConst::parseEntry(void *cJSON_, const char *make_model)
 {
-    CameraConst *cc = nullptr;
     cJSON *js, *ji, *jranges;
     js = (cJSON *)cJSON_;
 
-    cc = new CameraConst;
+    CameraConst *cc = new CameraConst;
     cc->make_model = Glib::ustring(make_model);
 
     ji = cJSON_GetObjectItem(js, "dcraw_matrix");
diff --git a/rtengine/iccstore.cc b/rtengine/iccstore.cc
index 47bfadd80..8ea663750 100644
--- a/rtengine/iccstore.cc
+++ b/rtengine/iccstore.cc
@@ -1225,8 +1225,7 @@ cmsHPROFILE rtengine::ICCStore::createCustomGammaOutputProfile(const procparams:
     }
 
     // Calculate output profile's rTRC gTRC bTRC
-    cmsToneCurve* GammaTRC = nullptr;
-    GammaTRC = cmsBuildParametricToneCurve(nullptr, 5, Parameters);
+    cmsToneCurve* GammaTRC = cmsBuildParametricToneCurve(nullptr, 5, Parameters);
     cmsWriteTag(outputProfile, cmsSigRedTRCTag,(void*)GammaTRC );
     cmsWriteTag(outputProfile, cmsSigGreenTRCTag,(void*)GammaTRC );
     cmsWriteTag(outputProfile, cmsSigBlueTRCTag,(void*)GammaTRC );
diff --git a/rtengine/improcfun.h b/rtengine/improcfun.h
index 3a4134dc5..d7d807a4b 100644
--- a/rtengine/improcfun.h
+++ b/rtengine/improcfun.h
@@ -150,7 +150,7 @@ class ImProcFunctions
         }
 
         double rd;
-        double yr[4];
+        double yr[4] = {0.0};
 
         for (int k = ys, kx = 0; k < ys + 4; k++, kx++) {
             rd = 0.0;
diff --git a/rtengine/iptransform.cc b/rtengine/iptransform.cc
index d01049774..c4d9a0a01 100644
--- a/rtengine/iptransform.cc
+++ b/rtengine/iptransform.cc
@@ -690,7 +690,7 @@ void ImProcFunctions::transformLuminanceOnly (Imagefloat* original, Imagefloat*
     #pragma omp parallel for schedule(dynamic,16) if (multiThread)
 
     for (int y = 0; y < transformed->getHeight(); y++) {
-        double vig_y_d = (double) (y + cy) - vig_h2 ;
+        double vig_y_d = applyVignetting ? (double) (y + cy) - vig_h2 : 0.0;
 
         for (int x = 0; x < transformed->getWidth(); x++) {
             double factor = 1.0;
diff --git a/rtengine/procparams.cc b/rtengine/procparams.cc
index 9ce255a95..fc6fa15cf 100644
--- a/rtengine/procparams.cc
+++ b/rtengine/procparams.cc
@@ -819,6 +819,7 @@ void DirPyrDenoiseParams::setDefaults()
     enhance = false;
     median = false;
     autochroma = false;
+    perform = false;
     luma = 0;
     passes = 1;
     dmethod = "Lab";
diff --git a/rtengine/profilestore.cc b/rtengine/profilestore.cc
index 75e916808..c713d6b5c 100644
--- a/rtengine/profilestore.cc
+++ b/rtengine/profilestore.cc
@@ -190,8 +190,7 @@ bool ProfileStore::parseDir (Glib::ustring& realPath, Glib::ustring& virtualPath
         }
 
         // walking through the directory
-        Glib::Dir* dir = nullptr;
-        dir = new Glib::Dir (realPath);
+        Glib::Dir* dir = new Glib::Dir (realPath);
 
         for (Glib::DirIterator i = dir->begin(); i != dir->end(); ++i) {
             currDir = *i;
diff --git a/rtgui/cropwindow.cc b/rtgui/cropwindow.cc
index d51674b5e..8af0541fe 100644
--- a/rtgui/cropwindow.cc
+++ b/rtgui/cropwindow.cc
@@ -36,7 +36,7 @@ using namespace rtengine;
 
 CropWindow::CropWindow (ImageArea* parent, bool isLowUpdatePriority_, bool isDetailWindow)
     : ObjectMOBuffer(parent), state(SNormal), press_x(0), press_y(0), action_x(0), action_y(0), pickedObject(-1), pickModifierKey(0), rot_deg(0), onResizeArea(false), deleted(false),
-      fitZoomEnabled(true), fitZoom(false), /*isLowUpdatePriority(isLowUpdatePriority_),*/ hoveredPicker(nullptr), cropLabel(Glib::ustring("100%")),
+      fitZoomEnabled(true), fitZoom(false), cursor_type(CSArrow), /*isLowUpdatePriority(isLowUpdatePriority_),*/ hoveredPicker(nullptr), cropLabel(Glib::ustring("100%")),
       backColor(options.bgcolor), decorated(true), isFlawnOver(false), titleHeight(30), sideBorderWidth(3), lowerBorderWidth(3),
       upperBorderWidth(1), sepWidth(2), xpos(30), ypos(30), width(0), height(0), imgAreaX(0), imgAreaY(0), imgAreaW(0), imgAreaH(0),
       imgX(-1), imgY(-1), imgW(1), imgH(1), iarea(parent), cropZoom(0), zoomVersion(0), exposeVersion(0), cropgl(nullptr),
@@ -1619,8 +1619,8 @@ void CropWindow::expose (Cairo::RefPtr<Cairo::Context> cr)
 
                     const int hlThreshold = options.highlightThreshold;
                     const int shThreshold = options.shadowThreshold;
-                    const float ShawdowFac = 64 / (options.shadowThreshold + 1);
-                    const float HighlightFac = 64 / (256 - options.highlightThreshold);
+                    const float ShawdowFac = 64.f / (options.shadowThreshold + 1);
+                    const float HighlightFac = 64.f / (256 - options.highlightThreshold);
                     const bool showclippedAny = (!showR && !showG && !showB && !showL); // will show clipping if any of RGB chanels is clipped
 
 #ifdef _OPENMP
diff --git a/rtgui/curveeditor.cc b/rtgui/curveeditor.cc
index 117051b2a..f8beff547 100644
--- a/rtgui/curveeditor.cc
+++ b/rtgui/curveeditor.cc
@@ -197,8 +197,11 @@ CurveEditor::CurveEditor (Glib::ustring text, CurveEditorGroup* ceGroup, CurveEd
     remoteDrag = false;
     selected = DCT_Linear;
     bottomBarCP = nullptr;
+    bottomBarCId = 0;
     leftBarCP = nullptr;
+    leftBarCId = 0;
     curveCP = nullptr;
+    curveCId = 0;
     relatedWidget = nullptr;
     expandRelatedWidget = true;
 
diff --git a/rtgui/curveeditorgroup.cc b/rtgui/curveeditorgroup.cc
index 8c2efdadd..29c8f5f84 100644
--- a/rtgui/curveeditorgroup.cc
+++ b/rtgui/curveeditorgroup.cc
@@ -395,7 +395,7 @@ void CurveEditorGroup::setUnChanged (bool uc, CurveEditor* ce)
     }
 }
 
-CurveEditorSubGroup::CurveEditorSubGroup(Glib::ustring& curveDir) : curveDir(curveDir), lastFilename("")
+CurveEditorSubGroup::CurveEditorSubGroup(Glib::ustring& curveDir) : curveDir(curveDir), lastFilename(""), valLinear(0), valUnchanged(0), parent(nullptr)
 {
     leftBar = nullptr;
     bottomBar = nullptr;
diff --git a/rtgui/darkframe.cc b/rtgui/darkframe.cc
index d13f8e652..83bad565a 100644
--- a/rtgui/darkframe.cc
+++ b/rtgui/darkframe.cc
@@ -25,7 +25,7 @@
 using namespace rtengine;
 using namespace rtengine::procparams;
 
-DarkFrame::DarkFrame () : FoldableToolPanel(this, "darkframe", M("TP_DARKFRAME_LABEL"))
+DarkFrame::DarkFrame () : FoldableToolPanel(this, "darkframe", M("TP_DARKFRAME_LABEL")), dfChanged(false), lastDFauto(false), dfp(nullptr), israw(true)
 {
     hbdf = Gtk::manage(new Gtk::HBox());
     hbdf->set_spacing(4);
diff --git a/rtgui/previewmodepanel.cc b/rtgui/previewmodepanel.cc
index 7993be2e3..50beb8b66 100644
--- a/rtgui/previewmodepanel.cc
+++ b/rtgui/previewmodepanel.cc
@@ -226,7 +226,7 @@ void PreviewModePanel::buttonToggled (Gtk::ToggleButton* tbpreview)
 
 int PreviewModePanel::GetbackColor()
 {
-    int backColor;
+    int backColor = 0;
 
     if (backColor0->get_active ()) {
         backColor = 0;
diff --git a/rtgui/previewwindow.cc b/rtgui/previewwindow.cc
index 0a0fd6b2a..66f49f61e 100644
--- a/rtgui/previewwindow.cc
+++ b/rtgui/previewwindow.cc
@@ -22,7 +22,7 @@
 #include "cursormanager.h"
 
 PreviewWindow::PreviewWindow () : previewHandler(nullptr), mainCropWin(nullptr), imageArea(nullptr), imgX(0), imgY(0), imgW(0), imgH(0),
-    zoom(0.0), isMoving(false), needsUpdate(false), cursor_type(CSUndefined)
+    zoom(0.0), press_x(0), press_y(0), isMoving(false), needsUpdate(false), cursor_type(CSUndefined)
 
 {
     set_name("PreviewWindow");