diff --git a/3d-viewer/3d_rendering/cpostshader_ssao.cpp b/3d-viewer/3d_rendering/cpostshader_ssao.cpp
index 55b140323c..c0cea6cf6c 100644
--- a/3d-viewer/3d_rendering/cpostshader_ssao.cpp
+++ b/3d-viewer/3d_rendering/cpostshader_ssao.cpp
@@ -31,9 +31,11 @@
 #include "../3d_fastmath.h"
 
 
-CPOSTSHADER_SSAO::CPOSTSHADER_SSAO( const CCAMERA &aCamera ) : CPOSTSHADER( aCamera )
+CPOSTSHADER_SSAO::CPOSTSHADER_SSAO( const CCAMERA &aCamera ) :
+        CPOSTSHADER( aCamera ),
+        m_shadedBuffer( nullptr ),
+        m_isUsingShadows( false )
 {
-    m_shadedBuffer = NULL;
 }
 
 // There are differente sources for this shader on the web
diff --git a/common/project.cpp b/common/project.cpp
index 117f430a44..d374fa82ec 100644
--- a/common/project.cpp
+++ b/common/project.cpp
@@ -40,7 +40,8 @@
 
 
 PROJECT::PROJECT() :
-        m_projectFile( nullptr )
+        m_projectFile( nullptr ),
+        m_localSettings( nullptr )
 {
     memset( m_elems, 0, sizeof(m_elems) );
 }
diff --git a/common/settings/app_settings.cpp b/common/settings/app_settings.cpp
index c49fed21d6..40703d7a26 100644
--- a/common/settings/app_settings.cpp
+++ b/common/settings/app_settings.cpp
@@ -33,7 +33,14 @@ const int appSettingsSchemaVersion = 0;
 
 APP_SETTINGS_BASE::APP_SETTINGS_BASE( const std::string& aFilename, int aSchemaVersion ) :
         JSON_SETTINGS( aFilename, SETTINGS_LOC::USER, aSchemaVersion ),
-        m_Printing(), m_System(), m_Window(), m_appSettingsSchemaVersion( aSchemaVersion )
+        m_CrossProbing(),
+        m_FindReplace(),
+        m_Graphics(),
+        m_LibTree(),
+        m_Printing(),
+        m_System(),
+        m_Window(),
+        m_appSettingsSchemaVersion( aSchemaVersion )
 {
     // Make Coverity happy:
     m_LibTree.column_width = 360;
diff --git a/common/settings/common_settings.cpp b/common/settings/common_settings.cpp
index 583bcdeca3..b793c23e82 100644
--- a/common/settings/common_settings.cpp
+++ b/common/settings/common_settings.cpp
@@ -36,7 +36,12 @@ const int commonSchemaVersion = 1;
 
 COMMON_SETTINGS::COMMON_SETTINGS() :
         JSON_SETTINGS( "kicad_common", SETTINGS_LOC::USER, commonSchemaVersion ),
-        m_Appearance(), m_Env(), m_Input(), m_Graphics(), m_System()
+        m_Appearance(),
+        m_Backup(),
+        m_Env(),
+        m_Input(),
+        m_Graphics(),
+        m_System()
 {
     // This only effect the first time KiCad is run.  The user's setting will be used for all
     // subsequent runs.
diff --git a/common/tool/tool_manager.cpp b/common/tool/tool_manager.cpp
index cce320e9bf..81e45a0b2e 100644
--- a/common/tool/tool_manager.cpp
+++ b/common/tool/tool_manager.cpp
@@ -198,10 +198,11 @@ private:
 
 
 TOOL_MANAGER::TOOL_MANAGER() :
-        m_model( NULL ),
-        m_view( NULL ),
-        m_viewControls( NULL ),
-        m_frame( NULL ),
+        m_model( nullptr ),
+        m_view( nullptr ),
+        m_viewControls( nullptr ),
+        m_frame( nullptr ),
+        m_settings( nullptr ),
         m_warpMouseAfterContextMenu( true ),
         m_menuActive( false ),
         m_menuOwner( -1 ),
diff --git a/eeschema/eeschema_settings.cpp b/eeschema/eeschema_settings.cpp
index 5356b78b08..3b1d845a07 100644
--- a/eeschema/eeschema_settings.cpp
+++ b/eeschema/eeschema_settings.cpp
@@ -36,7 +36,22 @@
 const int eeschemaSchemaVersion = 0;
 
 
-EESCHEMA_SETTINGS::EESCHEMA_SETTINGS() : APP_SETTINGS_BASE( "eeschema", eeschemaSchemaVersion )
+EESCHEMA_SETTINGS::EESCHEMA_SETTINGS() :
+        APP_SETTINGS_BASE( "eeschema", eeschemaSchemaVersion ),
+        m_Appearance(),
+        m_AutoplaceFields(),
+        m_Drawing(),
+        m_Input(),
+        m_PageSettings(),
+        m_AnnotatePanel(),
+        m_BomPanel(),
+        m_FieldEditorPanel(),
+        m_LibViewPanel(),
+        m_NetlistPanel(),
+        m_SymChooserPanel(),
+        m_Selection(),
+        m_Simulator(),
+        m_RescueNeverShow( false )
 {
     m_params.emplace_back( new PARAM<wxString>( "appearance.edit_component_visible_columns",
             &m_Appearance.edit_component_visible_columns, "0 1 2 3 4 5 6 7" ) );
diff --git a/eeschema/schematic_settings.cpp b/eeschema/schematic_settings.cpp
index b2303f02bb..cf05dbd84e 100644
--- a/eeschema/schematic_settings.cpp
+++ b/eeschema/schematic_settings.cpp
@@ -41,6 +41,7 @@ SCHEMATIC_SETTINGS::SCHEMATIC_SETTINGS( JSON_SETTINGS* aParent, const std::strin
         m_TextOffsetRatio( 0.08 ),
         m_PinSymbolSize( DEFAULT_TEXT_SIZE * IU_PER_MILS / 2 ),
         m_JunctionSize( DEFAULT_JUNCTION_DIAM * IU_PER_MILS ),
+        m_SpiceAdjustPassiveValues( false ),
         m_TemplateFieldNames( nullptr )
 {
     EESCHEMA_SETTINGS* appSettings = dynamic_cast<EESCHEMA_SETTINGS*>( Kiface().KifaceSettings() );
diff --git a/pcbnew/altium2kicadpcb_plugin/altium_parser_pcb.cpp b/pcbnew/altium2kicadpcb_plugin/altium_parser_pcb.cpp
index f1bced6a2f..351eee380b 100644
--- a/pcbnew/altium2kicadpcb_plugin/altium_parser_pcb.cpp
+++ b/pcbnew/altium2kicadpcb_plugin/altium_parser_pcb.cpp
@@ -484,6 +484,7 @@ ARULE6::ARULE6( ALTIUM_PARSER& aReader )
     polygonconnectAirgapwidth = 0;
     polygonconnectReliefconductorwidth = 0;
     polygonconnectReliefentries = 0;
+    polygonconnectStyle = ALTIUM_CONNECT_STYLE::UNKNOWN;
 
     aReader.Skip( 2 );
 
diff --git a/pcbnew/pcbnew_settings.cpp b/pcbnew/pcbnew_settings.cpp
index b965eb474e..5f7a7ce96b 100644
--- a/pcbnew/pcbnew_settings.cpp
+++ b/pcbnew/pcbnew_settings.cpp
@@ -64,6 +64,7 @@ PCBNEW_SETTINGS::PCBNEW_SETTINGS()
           m_FootprintViewer(),
           m_FootprintWizard(),
           m_Display(),
+          m_TrackDragAction( TRACK_DRAG_ACTION::DRAG ),
           m_Use45DegreeGraphicSegments( false ),
           m_FlipLeftRight( false ),
           m_PolarCoords( false ),
diff --git a/pcbnew/tools/pad_tool.cpp b/pcbnew/tools/pad_tool.cpp
index b3a48b2e21..5a9ba79e90 100644
--- a/pcbnew/tools/pad_tool.cpp
+++ b/pcbnew/tools/pad_tool.cpp
@@ -44,6 +44,7 @@
 PAD_TOOL::PAD_TOOL() :
         PCB_TOOL_BASE( "pcbnew.PadTool" ),
         m_padCopied( false ),
+        m_wasHighContrast( false ),
         m_editPad( niluuid )
 {}