With latest package from MSYS of clang 3.8.0 build at least compile fine on windows (nw)

Strange crashing while executing

scripts/src/tests.lua

@@ -22,11 +22,6 @@ project "gtest"
 			"-Wno-unused-variable",
 		}
 
-	configuration { "mingw-clang" }
-		buildoptions {
-			"-O0", -- crash of compiler when doing optimization
-		}
-
 	configuration { "vs*" }
 if _OPTIONS["vs"]=="intel-15" then
 		buildoptions {

src/osd/modules/input/input_dinput.cpp

@@ -115,8 +115,6 @@ protected:
 class dinput_keyboard_device : public dinput_device
 {
 private:
-	HANDLE m_dataEvent;
-	HANDLE m_exitEvent;
 	std::mutex m_device_lock;
 
 public:
@@ -124,7 +122,7 @@ public:
 
 	dinput_keyboard_device(running_machine &machine, const char *name, input_module &module)
 		: dinput_device(machine, name, DEVICE_CLASS_KEYBOARD, module),
-			keyboard({0})
+			keyboard({{0}})
 	{
 	}
 
@@ -152,8 +150,6 @@ class dinput_module : public wininput_module
 private:
 	LPDIRECTINPUT        m_dinput;
 	int                  m_dinput_version;
-	int                  didevtype_keyboard;
-	int                  didevtype_mouse;
 
 public:
 	dinput_module(const char* type, const char* name)
@@ -493,7 +489,7 @@ public:
 
 	dinput_joystick_device(running_machine &machine, const char *name, input_module &module)
 		: dinput_device(machine, name, DEVICE_CLASS_JOYSTICK, module),
-		  joystick({0})
+		  joystick({{0}})
 	{
 	}
 

src/osd/modules/input/input_rawinput.cpp

@@ -263,7 +263,7 @@ public:
 
 	rawinput_keyboard_device(running_machine& machine, const char* name, input_module& module)
 		: rawinput_device(machine, name, DEVICE_CLASS_KEYBOARD, module),
-			keyboard({0})
+			keyboard({{0}})
 	{
 	}
 
@@ -549,8 +549,8 @@ public:
 	}
 
 protected:
-	USHORT usagepage() { return 1; }
+	USHORT usagepage() override { return 1; }
-	USHORT usage() { return 6; }
+	USHORT usage() override { return 6; }
 	void add_rawinput_device(running_machine& machine, RAWINPUTDEVICELIST * device) override
 	{
 		// make sure this is a keyboard
@@ -596,8 +596,8 @@ public:
 	}
 
 protected:
-	USHORT usagepage() { return 1; }
+	USHORT usagepage() override { return 1; }
-	USHORT usage() { return 2; }
+	USHORT usage() override { return 2; }
 	void add_rawinput_device(running_machine& machine, RAWINPUTDEVICELIST * device) override
 	{
 		// make sure this is a mouse

src/osd/modules/input/input_win32.cpp

@@ -45,7 +45,7 @@ public:
 
 	win32_keyboard_device(running_machine& machine, const char *name, input_module &module)
 		: event_based_device(machine, name, DEVICE_CLASS_KEYBOARD, module),
-			keyboard({0})
+			keyboard({{0}})
 	{
 	}
 
@@ -68,7 +68,6 @@ protected:
 class keyboard_input_win32 : public wininput_module
 {
 private:
-	const osd_options *    m_options;
 
 public:
 	keyboard_input_win32()
@@ -138,7 +137,7 @@ public:
 	win32_mouse_device(running_machine& machine, const char *name, input_module &module)
 		: event_based_device(machine, name, DEVICE_CLASS_MOUSE, module),
 			mouse({0}),
-			win32_mouse({0})
+			win32_mouse({{0}})
 	{
 	}
 
@@ -172,10 +171,11 @@ public:
 	void reset() override
 	{
 		memset(&mouse, 0, sizeof(mouse));
+		memset(&win32_mouse, 0, sizeof(win32_mouse));
 	}
 
 protected:
-	void process_event(MouseButtonEventArgs &args)
+	void process_event(MouseButtonEventArgs &args) override
 	{
 		// set the button state
 		mouse.rgbButtons[args.button] = args.keydown ? 0x80 : 0x00;
@@ -192,9 +192,6 @@ protected:
 
 class mouse_input_win32 : public wininput_module
 {
-private:
-	const osd_options *    m_options;
-
 public:
 	mouse_input_win32()
 		: wininput_module(OSD_MOUSEINPUT_PROVIDER, "win32")
@@ -301,7 +298,7 @@ public:
 	}
 
 protected:
-	void process_event(MouseButtonEventArgs &args)
+	void process_event(MouseButtonEventArgs &args) override
 	{
 		// Are we in shared axis mode?
 		if (m_lightgun_shared_axis_mode)

src/osd/modules/input/input_xinput.cpp

@@ -187,7 +187,7 @@ private:
 public:
 	xinput_joystick_device(running_machine &machine, const char *name, input_module &module)
 		: device_info(machine, name, DEVICE_CLASS_JOYSTICK, module),
-			gamepad({0}),
+			gamepad({{0}}),
 			xinput_state({0}),
 			xinput_api(nullptr)
 	{

src/osd/modules/sound/xaudio2_sound.cpp

@@ -205,7 +205,6 @@ private:
 	std::thread                                 m_audioThread;
 	std::queue<xaudio2_buffer>                  m_queue;
 	std::unique_ptr<bufferpool>                 m_buffer_pool;
-	HMODULE                                     m_xaudio2_module;
 	UINT32                                      m_overflows;
 	UINT32                                      m_underflows;
 	BOOL                                        m_in_underflow;
@@ -227,7 +226,6 @@ public:
 		m_hEventDataAvailable(nullptr),
 		m_hEventExiting(nullptr),
 		m_buffer_pool(nullptr),
-		m_xaudio2_module(nullptr),
 		m_overflows(0),
 		m_underflows(0),
 		m_in_underflow(FALSE),