Fixes for various issues reported by Coverity.

src/common/RewindManager.hxx

@@ -177,7 +177,7 @@ class RewindManager
 
       // We do nothing on object instantiation or copy
       // The goal of LinkedObjectPool is to not do any allocations at all
-      RewindState() { }
+      RewindState() : cycles(0) { }
       RewindState(const RewindState&) { }
 
       // Output object info; used for debugging only

src/common/main.cxx

@@ -131,9 +131,13 @@ int main(int argc, char* argv[])
 
     if(theOSystem->settings().getBool("takesnapshot"))
     {
+      try {
         theOSystem->logMessage("Taking snapshots with 'takesnapshot' ...", 2);
         for(int i = 0; i < 30; ++i)  theOSystem->frameBuffer().update();
         theOSystem->png().takeSnapshot();
+      } catch(const runtime_error& e) {
+        cout << e.what() << endl;
+      }
       return Cleanup();
     }
 

src/common/tv_filters/AtariNTSC.hxx

@@ -184,6 +184,8 @@ class AtariNTSC
       float artifacts;
       float fringing;
       float kernel [rescale_out * kernel_size * 2];
+
+      init_t() : contrast(0.0), brightness(0.0), artifacts(0.0), fringing(0.0) { }
     };
     init_t myImpl;
 

src/debugger/DebuggerParser.cxx

@@ -58,6 +58,7 @@ using std::right;
 DebuggerParser::DebuggerParser(Debugger& d, Settings& s)
   : debugger(d),
     settings(s),
+    myCommand(0),
     argCount(0),
     execDepth(0),
     execPrefix("")
@@ -1459,13 +1460,10 @@ void DebuggerParser::executeListfunctions()
 void DebuggerParser::executeListsavestateifs()
 {
   ostringstream buf;
-  int count = 0;
 
   StringList conds = debugger.m6502().getCondSaveStateNames();
   if(conds.size() > 0)
   {
-    if(count)
-      commandResult << endl;
     commandResult << "savestateif:" << endl;
     for(uInt32 i = 0; i < conds.size(); i++)
     {

src/debugger/gui/CartMNetworkWidget.cxx

@@ -26,8 +26,11 @@ CartridgeMNetworkWidget::CartridgeMNetworkWidget(
     int x, int y, int w, int h,
     CartridgeMNetwork& cart)
   : CartDebugWidget(boss, lfont, nfont, x, y, w, h),
-    myCart(cart)
-{}
+    myCart(cart),
+    myLower2K(nullptr),
+    myUpper256B(nullptr)
+{
+}
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 void CartridgeMNetworkWidget::initialize(GuiObject* boss, CartridgeMNetwork& cart, ostringstream& info)

src/debugger/gui/CartMNetworkWidget.hxx

@@ -34,11 +34,11 @@ class CartridgeMNetworkWidget : public CartDebugWidget
     virtual ~CartridgeMNetworkWidget() = default;
 
   protected:
-    PopUpWidget *myLower2K, *myUpper256B;
-
     //CartridgeE7& myCart;
     CartridgeMNetwork& myCart;
 
+    PopUpWidget *myLower2K, *myUpper256B;
+
     struct CartState
     {
       ByteArray internalram;

src/debugger/gui/FlashWidget.cxx

@@ -22,7 +22,8 @@
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 FlashWidget::FlashWidget(GuiObject* boss, const GUI::Font& font,
                          int x, int y, Controller& controller)
-  : ControllerWidget(boss, font, x, y, controller)
+  : ControllerWidget(boss, font, x, y, controller),
+    myEEPROMEraseCurrent(nullptr)
 {
 }
 

src/debugger/gui/PromptWidget.cxx

@@ -34,7 +34,9 @@ PromptWidget::PromptWidget(GuiObject* boss, const GUI::Font& font,
                            int x, int y, int w, int h)
   : Widget(boss, font, x, y, w - kScrollBarWidth, h),
     CommandSender(boss),
+    _historySize(0),
     _historyIndex(0),
+    _historyLine(0),
     _makeDirty(false),
     _firstTime(true),
     _exitedEarly(false)

src/emucore/CartBUS.cxx

@@ -102,6 +102,11 @@ void CartridgeBUS::setInitialState()
   // Assuming mode starts out with Fast Fetch off and 3-Voice music,
   // need to confirm with Chris
   myMode = 0xFF;
+
+  myBankOffset = myBusOverdriveAddress =
+    mySTYZeroPageAddress = myJMPoperandAddress = 0;
+
+  myFastJumpActive = 0;
 }
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

src/emucore/CartCDF.cxx

@@ -105,6 +105,7 @@ void CartridgeCDF::setInitialState()
   // need to confirm with Chris
   myMode = 0xFF;
 
+  myBankOffset = myLDAimmediateOperandAddress = myJMPoperandAddress = 0;
   myFastJumpActive = 0;
 }
 

src/emucore/CartCDF.hxx

@@ -273,8 +273,6 @@ class CartridgeCDF : public Cartridge
     // *and* the next two bytes in ROM are 00 00
     uInt16 myJMPoperandAddress;
 
-    TIA* myTIA;
-
     uInt8 myFastJumpActive;
 
     // version of CDF

src/emucore/CartMNetwork.cxx

@@ -23,7 +23,8 @@ CartridgeMNetwork::CartridgeMNetwork(const BytePtr& image, uInt32 size,
                                      const Settings& settings)
   : Cartridge(settings),
     mySize(size),
-    myCurrentRAM(0)
+    myCurrentRAM(0),
+    myRAMSlice(0)
 {
 }
 

src/emucore/FrameBuffer.cxx

@@ -47,7 +47,9 @@ FrameBuffer::FrameBuffer(OSystem& osystem)
     myInitializedCount(0),
     myPausedCount(0),
     myStatsEnabled(false),
+    myLastScanlines(0),
     myLastFrameRate(60),
+    myGrabMouse(false),
     myCurrentModeList(nullptr),
     myTotalTime(0),
     myTotalFrames(0)

src/emucore/FrameBuffer.hxx

@@ -505,7 +505,9 @@ class FrameBuffer
       shared_ptr<FBSurface> surface;
       bool enabled;
 
-      Message() : counter(0), x(0), y(0), w(0), h(0), color(0), enabled(false) { }
+      Message()
+        : counter(0), x(0), y(0), w(0), h(0), position(MessagePosition::BottomCenter),
+          color(0), enabled(false) { }
     };
     Message myMsg;
     Message myStatsMsg;

src/emucore/tia/Background.cxx

@@ -20,6 +20,7 @@
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 Background::Background()
+  : myTIA(nullptr)
 {
   reset();
 }

src/emucore/tia/Ball.cxx

@@ -26,7 +26,8 @@ enum Count: Int8 {
 Ball::Ball(uInt32 collisionMask)
   : myCollisionMaskDisabled(collisionMask),
     myCollisionMaskEnabled(0xFFFF),
-    myIsSuppressed(false)
+    myIsSuppressed(false),
+    myTIA(nullptr)
 {
   reset();
 }

src/emucore/tia/DelayQueueMember.hxx

@@ -28,6 +28,8 @@ class DelayQueueMember : public Serializable {
     struct Entry {
       uInt8 address;
       uInt8 value;
+
+      Entry() : address(0), value(0) { }
     };
 
   public:
@@ -52,7 +54,6 @@ class DelayQueueMember : public Serializable {
     uInt8 mySize;
 
   private:
-
     DelayQueueMember(const DelayQueueMember<capacity>&) = delete;
     DelayQueueMember(DelayQueueMember<capacity>&&) = delete;
     DelayQueueMember<capacity>& operator=(const DelayQueueMember<capacity>&) = delete;
@@ -68,7 +69,8 @@ class DelayQueueMember : public Serializable {
 template<unsigned capacity>
 DelayQueueMember<capacity>::DelayQueueMember()
   : mySize(0)
-{}
+{
+}
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 template<unsigned capacity>

src/emucore/tia/Missile.cxx

@@ -28,7 +28,8 @@ Missile::Missile(uInt32 collisionMask)
   : myCollisionMaskDisabled(collisionMask),
     myCollisionMaskEnabled(0xFFFF),
     myIsSuppressed(false),
-    myDecodesOffset(0)
+    myDecodesOffset(0),
+    myTIA(nullptr)
 {
   reset();
 }

src/emucore/tia/Player.cxx

@@ -28,7 +28,8 @@ Player::Player(uInt32 collisionMask)
   : myCollisionMaskDisabled(collisionMask),
     myCollisionMaskEnabled(0xFFFF),
     myIsSuppressed(false),
-    myDecodesOffset(0)
+    myDecodesOffset(0),
+    myTIA(nullptr)
 {
   reset();
 }

src/emucore/tia/Playfield.cxx

@@ -22,7 +22,8 @@
 Playfield::Playfield(uInt32 collisionMask)
   : myCollisionMaskDisabled(collisionMask),
     myCollisionMaskEnabled(0xFFFF),
-    myIsSuppressed(false)
+    myIsSuppressed(false),
+    myTIA(nullptr)
 {
   reset();
 }
@@ -38,9 +39,11 @@ void Playfield::reset()
   myPf1 = 0;
   myPf2 = 0;
 
+  myX = 0;
+
   myObjectColor = myDebugColor = 0;
-  myColorP0 = 0;
-  myColorP1 = 0;
+  myColorLeft = myColorRight = 0;
+  myColorP0 = myColorP1 = 0;
   myColorMode = ColorMode::normal;
   myDebugEnabled = false;
 

src/emucore/tia/frame-manager/FrameManager.cxx

@@ -35,9 +35,21 @@ enum Metrics: uInt32 {
 };
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-FrameManager::FrameManager() :
+FrameManager::FrameManager()
+  : myState(State::waitForVsyncStart),
+    myLineInState(0),
+    myVsyncLines(0),
+    myY(0), myLastY(0),
+    myVblankLines(0),
+    myKernelLines(0),
+    myOverscanLines(0),
+    myFrameLines(0),
     myHeight(0),
-  myYStart(0)
+    myFixedHeight(0),
+    myYStart(0),
+    myJitterEnabled(false),
+    myStableFrameLines(-1),
+    myStableFrameHeightCountdown(0)
 {
   onLayoutChange();
 }

src/emucore/tia/frame-manager/JitterEmulation.cxx

@@ -25,9 +25,12 @@ enum Metrics: uInt32 {
 };
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-JitterEmulation::JitterEmulation() :
+JitterEmulation::JitterEmulation()
+  : myJitterFactor(0),
     myYStart(0)
-{}
+{
+  reset();
+}
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 void JitterEmulation::reset()

src/gui/Dialog.cxx

@@ -51,6 +51,7 @@ Dialog::Dialog(OSystem& instance, DialogContainer& parent, const GUI::Font& font
     _mouseWidget(nullptr),
     _focusedWidget(nullptr),
     _dragWidget(nullptr),
+    _defaultWidget(nullptr),
     _okWidget(nullptr),
     _cancelWidget(nullptr),
     _visible(false),

src/gui/RadioButtonWidget.hxx

@@ -56,7 +56,7 @@ class RadioButtonWidget : public CheckboxWidget
 class RadioButtonGroup
 {
   public:
-    RadioButtonGroup() = default;
+    RadioButtonGroup() : mySelected(0) { }
 
     // add widget to group
     void addWidget(RadioButtonWidget* widget);

src/gui/Widget.cxx

@@ -39,7 +39,8 @@ Widget::Widget(GuiObject* boss, const GUI::Font& font,
     _bgcolor(kWidColor),
     _bgcolorhi(kWidColor),
     _textcolor(kTextColor),
-    _textcolorhi(kTextColorHi)
+    _textcolorhi(kTextColorHi),
+    _shadowcolor(kShadowColor)
 {
   // Insert into the widget list of the boss
   _next = _boss->_firstWidget;
@@ -354,7 +355,10 @@ ButtonWidget::ButtonWidget(GuiObject* boss, const GUI::Font& font,
   : StaticTextWidget(boss, font, x, y, w, h, label, TextAlign::Center),
     CommandSender(boss),
     _cmd(cmd),
-    _useBitmap(false)
+    _useBitmap(false),
+    _bitmap(nullptr),
+    _bmw(0),
+    _bmh(0)
 {
   _flags = WIDGET_ENABLED | WIDGET_CLEARBG;
   _bgcolor = kBtnColor;