fixed some modernize-use-equals-default clang-tidy warnings (nw) (#6237)

src/lib/util/avhuff.cpp

@@ -678,18 +678,6 @@ uint16_t *avhuff_encoder::deltarle_encoder::rle_and_histo_bitmap(const uint8_t *
 //  AVHUFF DECODER
 //**************************************************************************
 
-/**
- * @fn  avhuff_decoder::avhuff_decoder()
- *
- * @brief   -------------------------------------------------
- *            avhuff_decoder - constructor
- *          -------------------------------------------------.
- */
-
-avhuff_decoder::avhuff_decoder()
-{
-}
-
 /**
  * @fn  void avhuff_decoder::configure(const avhuff_decompress_config &config)
  *

src/lib/util/avhuff.h

@@ -144,7 +144,7 @@ class avhuff_decoder
 {
 public:
 	// construction/destruction
-	avhuff_decoder();
+	avhuff_decoder() = default;
 
 	// configuration
 	void configure(const avhuff_decompress_config &config);

src/lib/util/aviio.cpp

@@ -3803,13 +3803,3 @@ const char *avi_file::error_string(error err)
 		default:                                return "undocumented error";
 	}
 }
-
-
-avi_file::avi_file()
-{
-}
-
-
-avi_file::~avi_file()
-{
-}

src/lib/util/aviio.h

@@ -111,7 +111,7 @@ public:
 
 	static error open(std::string const &filename, ptr &file);
 	static error create(std::string const &filename, movie_info const &info, ptr &file);
-	virtual ~avi_file();
+	virtual ~avi_file() = default;
 
 	virtual void printf_chunks() = 0;
 	static const char *error_string(error err);
@@ -128,7 +128,7 @@ public:
 	virtual error append_sound_samples(int channel, std::int16_t const *samples, std::uint32_t numsamples, std::uint32_t sampleskip) = 0;
 
 protected:
-	avi_file();
+	avi_file() = default;
 };
 
 #endif // MAME_LIB_UTIL_AVIIO_H

src/lib/util/chdcodec.cpp

@@ -124,7 +124,7 @@ class chd_lzma_compressor : public chd_compressor
 public:
 	// construction/destruction
 	chd_lzma_compressor(chd_file &chd, uint32_t hunkbytes, bool lossy);
-	~chd_lzma_compressor();
+	~chd_lzma_compressor() = default;
 
 	// core functionality
 	virtual uint32_t compress(const uint8_t *src, uint32_t srclen, uint8_t *dest) override;
@@ -496,15 +496,6 @@ chd_codec::chd_codec(chd_file &chd, uint32_t hunkbytes, bool lossy)
 }
 
 
-//-------------------------------------------------
-//  ~chd_codec - destructor
-//-------------------------------------------------
-
-chd_codec::~chd_codec()
-{
-}
-
-
 //-------------------------------------------------
 //  configure - configuration
 //-------------------------------------------------
@@ -1053,15 +1044,6 @@ chd_lzma_compressor::chd_lzma_compressor(chd_file &chd, uint32_t hunkbytes, bool
 }
 
 
-//-------------------------------------------------
-//  ~chd_lzma_compressor - destructor
-//-------------------------------------------------
-
-chd_lzma_compressor::~chd_lzma_compressor()
-{
-}
-
-
 //-------------------------------------------------
 //  compress - compress data using the LZMA codec
 //-------------------------------------------------

src/lib/util/chdcodec.h

@@ -50,7 +50,7 @@ protected:
 
 public:
 	// allow public deletion
-	virtual ~chd_codec();
+	virtual ~chd_codec() = default;
 
 	// accessors
 	chd_file &chd() const { return m_chd; }

src/lib/util/corefile.cpp

@@ -143,7 +143,7 @@ class core_proxy_file : public core_file
 {
 public:
 	core_proxy_file(core_file &file) : m_file(file) { }
-	virtual ~core_proxy_file() override { }
+	virtual ~core_proxy_file() override = default;
 	virtual osd_file::error compress(int level) override { return m_file.compress(level); }
 
 	virtual int seek(std::int64_t offset, int whence) override { return m_file.seek(offset, whence); }
@@ -1161,15 +1161,6 @@ osd_file::error core_file::open_proxy(core_file &file, ptr &proxy)
 }
 
 
-/*-------------------------------------------------
-    closes a file
--------------------------------------------------*/
-
-core_file::~core_file()
-{
-}
-
-
 /*-------------------------------------------------
     load - open a file with the specified
     filename, read it into memory, and return a
@@ -1233,15 +1224,6 @@ osd_file::error core_file::load(std::string const &filename, std::vector<uint8_t
 	return osd_file::error::NONE;
 }
 
-
-/*-------------------------------------------------
-    protected constructor
--------------------------------------------------*/
-
-core_file::core_file()
-{
-}
-
 } // namespace util
 
 

src/lib/util/corefile.h

@@ -61,7 +61,7 @@ public:
 	static osd_file::error open_proxy(core_file &file, ptr &proxy);
 
 	// close an open file
-	virtual ~core_file();
+	virtual ~core_file() = default;
 
 	// enable/disable streaming file compression via zlib; level is 0 to disable compression, or up to 9 for max compression
 	virtual osd_file::error compress(int level) = 0;
@@ -128,7 +128,7 @@ public:
 
 
 protected:
-	core_file();
+	core_file() = default;
 };
 
 

src/lib/util/huffman.cpp

@@ -678,14 +678,6 @@ void huffman_context_base::build_lookup_table()
 //  8-BIT ENCODER
 //**************************************************************************
 
-//-------------------------------------------------
-//  huffman_8bit_encoder - constructor
-//-------------------------------------------------
-
-huffman_8bit_encoder::huffman_8bit_encoder()
-{
-}
-
 
 //-------------------------------------------------
 //  encode - encode a full buffer
@@ -722,14 +714,6 @@ huffman_error huffman_8bit_encoder::encode(const uint8_t *source, uint32_t sleng
 //  8-BIT DECODER
 //**************************************************************************
 
-//-------------------------------------------------
-//  huffman_8bit_decoder - constructor
-//-------------------------------------------------
-
-huffman_8bit_decoder::huffman_8bit_decoder()
-{
-}
-
 /**
  * @fn  huffman_error huffman_8bit_decoder::decode(const uint8_t *source, uint32_t slength, uint8_t *dest, uint32_t dlength)
  *

src/lib/util/huffman.h

@@ -149,7 +149,7 @@ class huffman_8bit_encoder : public huffman_encoder<>
 {
 public:
 	// construction/destruction
-	huffman_8bit_encoder();
+	huffman_8bit_encoder() = default;
 
 	// operations
 	huffman_error encode(const uint8_t *source, uint32_t slength, uint8_t *dest, uint32_t destlength, uint32_t &complength);
@@ -163,7 +163,7 @@ class huffman_8bit_decoder : public huffman_decoder<>
 {
 public:
 	// construction/destruction
-	huffman_8bit_decoder();
+	huffman_8bit_decoder() = default;
 
 	// operations
 	huffman_error decode(const uint8_t *source, uint32_t slength, uint8_t *dest, uint32_t destlength);

src/lib/util/opresolv.cpp

@@ -62,15 +62,6 @@ option_resolution::option_resolution(const option_guide &guide)
 }
 
 
-// -------------------------------------------------
-//  dtor
-// -------------------------------------------------
-
-option_resolution::~option_resolution()
-{
-}
-
-
 // -------------------------------------------------
 //  lookup_in_specification
 // -------------------------------------------------

src/lib/util/opresolv.h

@@ -243,7 +243,7 @@ public:
 
 	// ctor/dtor
 	option_resolution(const option_guide &guide);
-	~option_resolution();
+	~option_resolution() = default;
 
 	// sets a specification
 	void set_specification(const std::string &specification);

src/lib/util/options.cpp

@@ -125,15 +125,6 @@ core_options::entry::entry(std::string &&name, core_options::option_type type, c
 }
 
 
-//-------------------------------------------------
-//  entry - destructor
-//-------------------------------------------------
-
-core_options::entry::~entry()
-{
-}
-
-
 //-------------------------------------------------
 //  entry::value
 //-------------------------------------------------
@@ -336,15 +327,6 @@ core_options::simple_entry::simple_entry(std::vector<std::string> &&names, const
 }
 
 
-//-------------------------------------------------
-//  simple_entry - destructor
-//-------------------------------------------------
-
-core_options::simple_entry::~simple_entry()
-{
-}
-
-
 //-------------------------------------------------
 //  simple_entry::value
 //-------------------------------------------------
@@ -422,24 +404,6 @@ const char *core_options::simple_entry::maximum() const noexcept
 //  CORE OPTIONS
 //**************************************************************************
 
-//-------------------------------------------------
-//  core_options - constructor
-//-------------------------------------------------
-
-core_options::core_options()
-{
-}
-
-
-//-------------------------------------------------
-//  ~core_options - destructor
-//-------------------------------------------------
-
-core_options::~core_options()
-{
-}
-
-
 //-------------------------------------------------
 //  add_entry - adds an entry
 //-------------------------------------------------

src/lib/util/options.h

@@ -111,7 +111,7 @@ public:
 		entry(entry &&) = delete;
 		entry& operator=(const entry &) = delete;
 		entry& operator=(entry &&) = delete;
-		virtual ~entry();
+		virtual ~entry() = default;
 
 		// accessors
 		const std::vector<std::string> &names() const noexcept { return m_names; }
@@ -147,12 +147,12 @@ public:
 	};
 
 	// construction/destruction
-	core_options();
+	core_options() = default;
 	core_options(const core_options &) = delete;
 	core_options(core_options &&) = default;
 	core_options& operator=(const core_options &) = delete;
 	core_options& operator=(core_options &&) = default;
-	virtual ~core_options();
+	virtual ~core_options() = default;
 
 	// getters
 	const std::string &command() const noexcept { return m_command; }
@@ -213,7 +213,7 @@ private:
 		simple_entry(simple_entry &&) = delete;
 		simple_entry& operator=(const simple_entry &) = delete;
 		simple_entry& operator=(simple_entry &&) = delete;
-		~simple_entry();
+		~simple_entry() = default;
 
 		// getters
 		virtual const char *value() const noexcept override;

src/lib/util/palette.cpp

@@ -252,15 +252,6 @@ palette_t::palette_t(uint32_t numcolors, uint32_t numgroups)
 }
 
 
-//-------------------------------------------------
-//  palette_t - destructor
-//-------------------------------------------------
-
-palette_t::~palette_t()
-{
-}
-
-
 //-------------------------------------------------
 //  palette_t - destructor
 //-------------------------------------------------

src/lib/util/palette.h

@@ -191,7 +191,7 @@ public:
 private:
 	// construction/destruction
 	palette_t(uint32_t numcolors, uint32_t numgroups = 1);
-	~palette_t();
+	~palette_t() = default;
 
 	// internal helpers
 	rgb_t adjust_palette_entry(rgb_t entry, float brightness, float contrast, const uint8_t *gamma_map);

src/lib/util/unzip.cpp

@@ -1479,9 +1479,4 @@ void archive_file::cache_clear()
 	m7z_file_cache_clear();
 }
 
-
-archive_file::~archive_file()
-{
-}
-
 } // namespace util

src/lib/util/unzip.h

@@ -57,7 +57,7 @@ public:
 	static error open_7z(const std::string &filename, ptr &result);
 
 	// close an archive file (may actually be left open due to caching)
-	virtual ~archive_file();
+	virtual ~archive_file() = default;
 
 	// clear out all open files from the cache
 	static void cache_clear();

src/lib/util/xmlfile.cpp

@@ -68,9 +68,6 @@ static void expat_element_end(void *data, const XML_Char *name);
     XML FILE OBJECTS
 ***************************************************************************/
 
-file::file() { }
-file::~file() { }
-
 
 /*-------------------------------------------------
     create - create a new, empty XML file

src/lib/util/xmlfile.h

@@ -215,7 +215,7 @@ public:
 	using ptr = std::unique_ptr<file>;
 
 
-	~file();
+	~file() = default;
 
 	// create a new, empty XML file
 	static ptr create();
@@ -231,7 +231,7 @@ public:
 
 
 private:
-	file();
+	file() = default;
 };
 
 

src/lib/util/zippath.cpp

@@ -614,16 +614,6 @@ osd_file::error zippath_directory::open(std::string const &path, ptr &directory)
 }
 
 
-// -------------------------------------------------
-//  zippath_directory::~zippath_directory - closes
-//  a directory
-// -------------------------------------------------
-
-zippath_directory::~zippath_directory()
-{
-}
-
-
 // -------------------------------------------------
 //  zippath_parent - retrieves the parent directory
 // -------------------------------------------------

src/lib/util/zippath.h

@@ -34,7 +34,7 @@ public:
 	static osd_file::error open(std::string const &path, ptr &directory);
 
 	// closes a directory
-	virtual ~zippath_directory();
+	virtual ~zippath_directory() = default;
 
 	// reads a directory entry
 	virtual osd::directory::entry const *readdir() = 0;

src/osd/modules/debugger/debuggdbstub.cpp

@@ -327,7 +327,7 @@ public:
 	{
 	}
 
-	virtual ~debug_gdbstub() { }
+	virtual ~debug_gdbstub() = default;
 
 	virtual int init(const osd_options &options) override;
 	virtual void exit() override;

src/osd/modules/debugger/debugimgui.cpp

@@ -116,7 +116,7 @@ public:
 	{
 	}
 
-	virtual ~debug_imgui() { }
+	virtual ~debug_imgui() = default;
 
 	virtual int init(const osd_options &options) override { return 0; }
 	virtual void exit() override {};

src/osd/modules/debugger/debugwin.cpp

@@ -44,7 +44,7 @@ public:
 	{
 	}
 
-	virtual ~debugger_windows() { }
+	virtual ~debugger_windows() = default;
 
 	virtual int init(const osd_options &options) override { return 0; }
 	virtual void exit() override;

src/osd/modules/debugger/none.cpp

@@ -22,7 +22,7 @@ public:
 	{
 	}
 
-	virtual ~debug_none() { }
+	virtual ~debug_none() = default;
 
 	virtual int init(const osd_options &options) override { return 0; }
 	virtual void exit() override { }

src/osd/modules/debugger/win/consolewininfo.cpp

@@ -91,10 +91,6 @@ cleanup:
 }
 
 
-consolewin_info::~consolewin_info()
-{
-}
-
 void consolewin_info::set_cpu(device_t &device)
 {
 	// exit if this cpu is already selected

src/osd/modules/debugger/win/consolewininfo.h

@@ -19,7 +19,7 @@ class consolewin_info : public disasmbasewin_info
 {
 public:
 	consolewin_info(debugger_windows_interface &debugger);
-	virtual ~consolewin_info();
+	virtual ~consolewin_info() = default;
 
 	void set_cpu(device_t &device);
 

src/osd/modules/debugger/win/debugwininfo.cpp

@@ -48,11 +48,6 @@ debugwin_info::debugwin_info(debugger_windows_interface &debugger, bool is_main_
 }
 
 
-debugwin_info::~debugwin_info()
-{
-}
-
-
 void debugwin_info::destroy()
 {
 	for (int curview = 0; curview < MAX_VIEWS; curview++)

src/osd/modules/debugger/win/debugwininfo.h

@@ -19,7 +19,7 @@ class debugwin_info : protected debugbase_info
 {
 public:
 	debugwin_info(debugger_windows_interface &debugger, bool is_main_console, LPCSTR title, WNDPROC handler);
-	virtual ~debugwin_info();
+	virtual ~debugwin_info() = default;
 
 	bool is_valid() const { return m_wnd != nullptr; }
 

src/osd/modules/debugger/win/disasmbasewininfo.cpp

@@ -49,11 +49,6 @@ disasmbasewin_info::disasmbasewin_info(debugger_windows_interface &debugger, boo
 }
 
 
-disasmbasewin_info::~disasmbasewin_info()
-{
-}
-
-
 bool disasmbasewin_info::handle_key(WPARAM wparam, LPARAM lparam)
 {
 	if (GetAsyncKeyState(VK_CONTROL) & 0x8000)

src/osd/modules/debugger/win/disasmbasewininfo.h

@@ -19,7 +19,7 @@ class disasmbasewin_info : public editwin_info
 {
 public:
 	disasmbasewin_info(debugger_windows_interface &debugger, bool is_main_console, LPCSTR title, WNDPROC handler);
-	virtual ~disasmbasewin_info();
+	virtual ~disasmbasewin_info() = default;
 
 	virtual bool handle_key(WPARAM wparam, LPARAM lparam) override;
 

src/osd/modules/debugger/win/disasmviewinfo.cpp

@@ -16,11 +16,6 @@ disasmview_info::disasmview_info(debugger_windows_interface &debugger, debugwin_
 }
 
 
-disasmview_info::~disasmview_info()
-{
-}
-
-
 disasm_right_column disasmview_info::right_column() const
 {
 	return view<debug_view_disasm>()->right_column();

src/osd/modules/debugger/win/disasmviewinfo.h

@@ -21,7 +21,7 @@ class disasmview_info : public debugview_info
 {
 public:
 	disasmview_info(debugger_windows_interface &debugger, debugwin_info &owner, HWND parent);
-	virtual ~disasmview_info();
+	virtual ~disasmview_info() = default;
 
 	disasm_right_column right_column() const;
 	offs_t selected_address() const;

src/osd/modules/debugger/win/disasmwininfo.cpp

@@ -45,11 +45,6 @@ disasmwin_info::disasmwin_info(debugger_windows_interface &debugger) :
 }
 
 
-disasmwin_info::~disasmwin_info()
-{
-}
-
-
 void disasmwin_info::recompute_children()
 {
 	// compute a client rect

src/osd/modules/debugger/win/disasmwininfo.h

@@ -19,7 +19,7 @@ class disasmwin_info : public disasmbasewin_info
 {
 public:
 	disasmwin_info(debugger_windows_interface &debugger);
-	virtual ~disasmwin_info();
+	virtual ~disasmwin_info() = default;
 
 protected:
 	virtual void recompute_children() override;

src/osd/modules/debugger/win/editwininfo.cpp

@@ -51,11 +51,6 @@ editwin_info::editwin_info(debugger_windows_interface &debugger, bool is_main_co
 }
 
 
-editwin_info::~editwin_info()
-{
-}
-
-
 bool editwin_info::restore_field(HWND wnd)
 {
 	if (wnd == m_editwnd)

src/osd/modules/debugger/win/editwininfo.h

@@ -22,7 +22,7 @@ class editwin_info : public debugwin_info
 {
 public:
 	editwin_info(debugger_windows_interface &debugger, bool is_main_console, LPCSTR title, WNDPROC handler);
-	virtual ~editwin_info();
+	virtual ~editwin_info() = default;
 
 	virtual bool restore_field(HWND wnd) override;
 

src/osd/modules/debugger/win/logviewinfo.cpp

@@ -18,11 +18,6 @@ logview_info::logview_info(debugger_windows_interface &debugger, debugwin_info &
 }
 
 
-logview_info::~logview_info()
-{
-}
-
-
 void logview_info::clear()
 {
 	view<debug_view_log>()->clear();

src/osd/modules/debugger/win/logviewinfo.h

@@ -19,7 +19,7 @@ class logview_info : public debugview_info
 {
 public:
 	logview_info(debugger_windows_interface &debugger, debugwin_info &owner, HWND parent);
-	virtual ~logview_info();
+	virtual ~logview_info() = default;
 
 	void clear();
 };

src/osd/modules/debugger/win/logwininfo.cpp

@@ -49,10 +49,6 @@ logwin_info::logwin_info(debugger_windows_interface &debugger) :
 }
 
 
-logwin_info::~logwin_info()
-{
-}
-
 bool logwin_info::handle_command(WPARAM wparam, LPARAM lparam)
 {
 	if ((HIWORD(wparam) == 0) && (LOWORD(wparam) == ID_CLEAR_LOG))

src/osd/modules/debugger/win/logwininfo.h

@@ -19,7 +19,7 @@ class logwin_info : public debugwin_info
 {
 public:
 	logwin_info(debugger_windows_interface &debugger);
-	virtual ~logwin_info();
+	virtual ~logwin_info() = default;
 
 protected:
 	virtual bool handle_command(WPARAM wparam, LPARAM lparam) override;

src/osd/modules/debugger/win/memoryviewinfo.cpp

@@ -18,11 +18,6 @@ memoryview_info::memoryview_info(debugger_windows_interface &debugger, debugwin_
 }
 
 
-memoryview_info::~memoryview_info()
-{
-}
-
-
 uint8_t memoryview_info::data_format() const
 {
 	return view<debug_view_memory>()->get_data_format();

src/osd/modules/debugger/win/memoryviewinfo.h

@@ -19,7 +19,7 @@ class memoryview_info : public debugview_info
 {
 public:
 	memoryview_info(debugger_windows_interface &debugger, debugwin_info &owner, HWND parent);
-	virtual ~memoryview_info();
+	virtual ~memoryview_info() = default;
 
 	uint8_t data_format() const;
 	uint32_t chunks_per_row() const;

src/osd/modules/debugger/win/pointswininfo.cpp

@@ -51,11 +51,6 @@ pointswin_info::pointswin_info(debugger_windows_interface &debugger) :
 }
 
 
-pointswin_info::~pointswin_info()
-{
-}
-
-
 bool pointswin_info::handle_key(WPARAM wparam, LPARAM lparam)
 {
 	if (GetAsyncKeyState(VK_CONTROL) & 0x8000)

src/osd/modules/debugger/win/pointswininfo.h

@@ -19,7 +19,7 @@ class pointswin_info : public debugwin_info
 {
 public:
 	pointswin_info(debugger_windows_interface &debugger);
-	virtual ~pointswin_info();
+	virtual ~pointswin_info() = default;
 
 	virtual bool handle_key(WPARAM wparam, LPARAM lparam) override;
 

src/osd/modules/diagnostics/diagnostics_win32.cpp

@@ -77,7 +77,7 @@ class symbol_manager
 public:
 	// construction/destruction
 	symbol_manager(const char *argv0);
-	~symbol_manager();
+	~symbol_manager() = default;
 
 	// getters
 	uintptr_t last_base() const { return m_last_base; }
@@ -128,7 +128,7 @@ class sampling_profiler
 {
 public:
 	sampling_profiler(uint32_t max_seconds, uint8_t stack_depth);
-	~sampling_profiler();
+	~sampling_profiler() = default;
 
 	void start();
 	void stop();
@@ -321,15 +321,6 @@ symbol_manager::symbol_manager(const char *argv0)
 }
 
 
-//-------------------------------------------------
-//  ~symbol_manager - destructor
-//-------------------------------------------------
-
-symbol_manager::~symbol_manager()
-{
-}
-
-
 //-------------------------------------------------
 //  symbol_for_address - return a symbol by looking
 //  it up either in the cache or by scanning the
@@ -654,15 +645,6 @@ sampling_profiler::sampling_profiler(uint32_t max_seconds, uint8_t stack_depth =
 }
 
 
-//-------------------------------------------------
-//  sampling_profiler - destructor
-//-------------------------------------------------
-
-sampling_profiler::~sampling_profiler()
-{
-}
-
-
 //-------------------------------------------------
 //  start - begin gathering profiling information
 //-------------------------------------------------

src/osd/modules/diagnostics/none.cpp

@@ -11,9 +11,7 @@
 class diagnostics_none : public diagnostics_module
 {
 public:
-	diagnostics_none()
-	{
-	}
+	diagnostics_none() = default;
 
 	int init_crash_diagnostics() override
 	{

src/osd/modules/font/font_none.cpp

@@ -11,7 +11,7 @@
 class osd_font_none : public osd_font
 {
 public:
-	virtual ~osd_font_none() { }
+	virtual ~osd_font_none() = default;
 
 	virtual bool open(std::string const &font_path, std::string const &name, int &height) override { return false; }
 	virtual void close() override { }

src/osd/modules/midi/none.cpp

@@ -21,7 +21,7 @@ public:
 	: osd_module(OSD_MIDI_PROVIDER, "pm"), midi_module()
 	{
 	}
-	virtual ~none_module() { }
+	virtual ~none_module() = default;
 
 	virtual int init(const osd_options &options) override;
 	virtual void exit() override;
@@ -34,7 +34,7 @@ public:
 class osd_midi_device_none : public osd_midi_device
 {
 public:
-	virtual ~osd_midi_device_none() { }
+	virtual ~osd_midi_device_none() = default;
 	virtual bool open_input(const char *devname) override;
 	virtual bool open_output(const char *devname) override;
 	virtual void close() override;

src/osd/modules/midi/portmidi.cpp

@@ -24,7 +24,7 @@ public:
 	: osd_module(OSD_MIDI_PROVIDER, "pm"), midi_module()
 	{
 	}
-	virtual ~pm_module() { }
+	virtual ~pm_module() = default;
 
 	virtual int init(const osd_options &options)override;
 	virtual void exit()override;
@@ -43,7 +43,7 @@ class osd_midi_device_pm : public osd_midi_device
 {
 public:
 	osd_midi_device_pm(): pmStream(nullptr), xmit_cnt(0), last_status(0), rx_sysex(false) { }
-	virtual ~osd_midi_device_pm() { }
+	virtual ~osd_midi_device_pm() = default;
 	virtual bool open_input(const char *devname) override;
 	virtual bool open_output(const char *devname) override;
 	virtual void close() override;

src/osd/modules/netdev/none.cpp

@@ -16,7 +16,7 @@ public:
 	{
 	}
 
-	virtual ~netdev_none() { }
+	virtual ~netdev_none() = default;
 	virtual int init(const osd_options &options) override { return 0; }
 };
 

src/osd/modules/netdev/pcap.cpp

@@ -46,7 +46,7 @@ public:
 	{
 	}
 
-	virtual ~pcap_module() { }
+	virtual ~pcap_module() = default;
 
 	virtual int init(const osd_options &options) override;
 	virtual void exit() override;

src/osd/modules/netdev/taptun.cpp

@@ -40,7 +40,7 @@ public:
 	taptun_module() : osd_module(OSD_NETDEV_PROVIDER, "taptun"), netdev_module()
 	{
 	}
-	virtual ~taptun_module() { }
+	virtual ~taptun_module() = default;
 
 	virtual int init(const osd_options &options);
 	virtual void exit();

src/osd/modules/output/console.cpp

@@ -18,7 +18,7 @@ public:
 	: osd_module(OSD_OUTPUT_PROVIDER, "console"), output_module()
 	{
 	}
-	virtual ~output_console() { }
+	virtual ~output_console() = default;
 
 	virtual int init(const osd_options &options) override { return 0; }
 	virtual void exit() override { }

src/osd/modules/output/network.cpp

@@ -26,7 +26,7 @@
 class output_client
 {
 public:
-  virtual ~output_client() {}
+  virtual ~output_client() = default;
   virtual void deliver(std::string &msg) = 0;
 };
 
@@ -197,9 +197,7 @@ public:
 	{
 	}
 
-	virtual ~output_network()
-	{
-	}
+	virtual ~output_network() = default;
 
 	virtual int init(const osd_options &options) override
 	{

src/osd/modules/output/none.cpp

@@ -18,7 +18,7 @@ public:
 	: osd_module(OSD_OUTPUT_PROVIDER, "none"), output_module()
 	{
 	}
-	virtual ~output_none() { }
+	virtual ~output_none() = default;
 
 	virtual int init(const osd_options &options) override { return 0; }
 	virtual void exit() override { }

src/osd/modules/output/win32_output.cpp

@@ -69,7 +69,7 @@ public:
 		: osd_module(OSD_OUTPUT_PROVIDER, "windows"), output_module(), m_output_hwnd(nullptr), m_clientlist(nullptr)
 	{
 	}
-	virtual ~output_win32() { }
+	virtual ~output_win32() = default;
 
 	virtual int init(const osd_options &options) override;
 	virtual void exit() override;

src/osd/modules/render/bgfx/inputpair.cpp

@@ -40,10 +40,6 @@ bgfx_input_pair::bgfx_input_pair(int index, std::string sampler, std::string tex
 	}
 }
 
-bgfx_input_pair::~bgfx_input_pair()
-{
-}
-
 void bgfx_input_pair::bind(bgfx_effect *effect, const int32_t screen) const
 {
 	if (effect->uniform(m_sampler) == nullptr)

src/osd/modules/render/bgfx/inputpair.h

@@ -27,7 +27,7 @@ class bgfx_input_pair : public slider_changed_notifier
 {
 public:
 	bgfx_input_pair(int index, std::string sampler, std::string texture, std::vector<std::string> available_textures, std::string selection, chain_manager& chains, uint32_t screen_index);
-	~bgfx_input_pair();
+	~bgfx_input_pair() = default;
 
 	void bind(bgfx_effect *effect, const int32_t screen) const;
 	int32_t texture_changed(int32_t index, std::string *str, int32_t newval);

src/osd/modules/sound/direct_sound.cpp

@@ -60,7 +60,7 @@ public:
 		m_buffer_overflows(0)
 	{
 	}
-	virtual ~sound_direct_sound() { }
+	virtual ~sound_direct_sound() = default;
 
 	virtual int init(osd_options const &options) override;
 	virtual void exit() override;

src/osd/modules/sound/none.cpp

@@ -18,7 +18,7 @@ public:
 	: osd_module(OSD_SOUND_PROVIDER, "none"), sound_module()
 	{
 	}
-	virtual ~sound_none() { }
+	virtual ~sound_none() = default;
 
 	virtual int init(const osd_options &options) override { return 0; }
 	virtual void exit() override { }

src/osd/modules/sound/pa_sound.cpp

@@ -38,7 +38,7 @@ public:
 		: osd_module(OSD_SOUND_PROVIDER, "portaudio"), sound_module()
 	{
 	}
-	virtual ~sound_pa() { }
+	virtual ~sound_pa() = default;
 
 	virtual int init(osd_options const &options) override;
 	virtual void exit() override;

src/osd/modules/sound/xaudio2_sound.cpp

@@ -226,7 +226,7 @@ public:
 	{
 	}
 
-	virtual ~sound_xaudio2() { }
+	virtual ~sound_xaudio2() = default;
 
 	bool probe() override;
 	int init(osd_options const &options) override;

src/osd/osdnet.cpp

@@ -42,10 +42,6 @@ osd_netdev::osd_netdev(class device_network_interface *ifdev, int rate)
 	m_timer->adjust(attotime::from_hz(rate), 0, attotime::from_hz(rate));
 }
 
-osd_netdev::~osd_netdev()
-{
-}
-
 void osd_netdev::start()
 {
 	m_timer->enable(true);

src/osd/osdnet.h

@@ -21,7 +21,7 @@ public:
 		create_netdev func;
 	};
 	osd_netdev(class device_network_interface *ifdev, int rate);
-	virtual ~osd_netdev();
+	virtual ~osd_netdev() = default;
 	void start();
 	void stop();
 

src/osd/windows/winmain.cpp

@@ -489,15 +489,6 @@ windows_osd_interface::windows_osd_interface(windows_options &options)
 }
 
 
-//============================================================
-//  destructor
-//============================================================
-
-windows_osd_interface::~windows_osd_interface()
-{
-}
-
-
 //============================================================
 //  video_register
 //============================================================

src/osd/windows/winmain.h

@@ -275,7 +275,7 @@ class windows_osd_interface : public osd_common_t
 public:
 	// construction/destruction
 	windows_osd_interface(windows_options &options);
-	virtual ~windows_osd_interface();
+	virtual ~windows_osd_interface() = default;
 
 	// general overridables
 	virtual void init(running_machine &machine) override;