diff --git a/Source/Core/Core/Src/Debugger/Debugger_SymbolMap.cpp b/Source/Core/Core/Src/Debugger/Debugger_SymbolMap.cpp
index 95a3acab5a..3edde92883 100644
--- a/Source/Core/Core/Src/Debugger/Debugger_SymbolMap.cpp
+++ b/Source/Core/Core/Src/Debugger/Debugger_SymbolMap.cpp
@@ -86,7 +86,6 @@ bool GetCallstack(std::vector<CallstackEntry> &output)
 		if (!str || strlen(str) == 0 || !strcmp(str, "Invalid"))
 			str = "(unknown)";
 
-        CallstackEntry entry;
         entry.Name = StringFromFormat(" * %s [ addr = %08x ]\n", str, func - 4);
         entry.vAddress = func - 4;
 		output.push_back(entry);
diff --git a/Source/Core/Core/Src/HW/SI_DeviceAMBaseboard.cpp b/Source/Core/Core/Src/HW/SI_DeviceAMBaseboard.cpp
index 79b40d7bdc..c7e54d681e 100644
--- a/Source/Core/Core/Src/HW/SI_DeviceAMBaseboard.cpp
+++ b/Source/Core/Core/Src/HW/SI_DeviceAMBaseboard.cpp
@@ -44,11 +44,11 @@ public:
 		m_csum = 0;
 		addData(hdr, 3, 1);
 	}
-	void addData(void *data, size_t len)
+	void addData(const void *data, size_t len)
 	{
-		addData((unsigned char*)data, len);
+		addData((const unsigned char*)data, len);
 	}
-	void addData(char *data)
+	void addData(const char *data)
 	{
 		addData(data, strlen(data));
 	}
@@ -65,7 +65,7 @@ public:
 		addData(m_csum + len - 2);
 	}
 
-	void addData(unsigned char *dst, size_t len, int sync = 0)
+	void addData(const unsigned char *dst, size_t len, int sync = 0)
 	{
 		while (len--)
 		{
@@ -305,7 +305,7 @@ int CSIDevice_AMBaseboard::RunBuffer(u8* _pBuffer, int _iLength)
 									{
 										int nr_players = *jvs_io++;
 										int bytes_per_player = *jvs_io++; /* ??? */
-										int i, j;
+										int j;
 										msg.addData(1);
 
 										msg.addData(0); // tilt
diff --git a/Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE.cpp b/Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE.cpp
index fdf06609ca..3f0cc9fae1 100644
--- a/Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE.cpp
+++ b/Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE.cpp
@@ -454,7 +454,7 @@ void Update()
 
 	// if we have a reply to send
 	u32 _Reply = WII_IPCInterface::DeqReply();
-	if (_Reply != NULL)
+	if (_Reply != 0)
 	{
 		WII_IPCInterface::GenerateReply(_Reply);
 		INFO_LOG(WII_IPC_HLE, "<<-- Reply to Command Address: 0x%08x", _Reply);
@@ -463,7 +463,7 @@ void Update()
 
 	// If there is a a new command
 	u32 _Address = WII_IPCInterface::GetAddress();
-	if (_Address != NULL)
+	if (_Address != 0)
 	{
 		WII_IPCInterface::GenerateAck();
 		INFO_LOG(WII_IPC_HLE, "||-- Acknowledge Command Address: 0x%08x", _Address);
diff --git a/Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE_Device_es.cpp b/Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE_Device_es.cpp
index 0ea63cb76e..ffc94207e5 100644
--- a/Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE_Device_es.cpp
+++ b/Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE_Device_es.cpp
@@ -390,8 +390,8 @@ bool CWII_IPC_HLE_Device_es::IOCtlV(u32 _CommandAddress)
             _dbg_assert_msg_(WII_IPC_ES, Buffer.NumberInBuffer == 1, "IOCTL_ES_SETUID no in buffer");
             _dbg_assert_(WII_IPC_ES, Buffer.NumberPayloadBuffer == 0);
 
-            u64 m_TitleID = Memory::Read_U64(Buffer.InBuffer[0].m_Address);
-            INFO_LOG(WII_IPC_ES, "IOCTL_ES_SETUID titleID: %08x/%08x", (u32)(m_TitleID>>32), (u32)m_TitleID );
+            u64 TitleID = Memory::Read_U64(Buffer.InBuffer[0].m_Address);
+            INFO_LOG(WII_IPC_ES, "IOCTL_ES_SETUID titleID: %08x/%08x", (u32)(TitleID>>32), (u32)TitleID);
         }
         break;
 
diff --git a/Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE_Device_sdio_slot0.cpp b/Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE_Device_sdio_slot0.cpp
index aadacb97d6..300ccef210 100644
--- a/Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE_Device_sdio_slot0.cpp
+++ b/Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE_Device_sdio_slot0.cpp
@@ -28,10 +28,10 @@
 
 CWII_IPC_HLE_Device_sdio_slot0::CWII_IPC_HLE_Device_sdio_slot0(u32 _DeviceID, const std::string& _rDeviceName)
     : IWII_IPC_HLE_Device(_DeviceID, _rDeviceName)
-	, m_Card(NULL)
 	, m_Status(CARD_NOT_EXIST)
 	, m_BlockLength(0)
 	, m_BusWidth(0)
+	, m_Card(NULL)
 {}
 
 CWII_IPC_HLE_Device_sdio_slot0::~CWII_IPC_HLE_Device_sdio_slot0()
diff --git a/Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE_WiiMote.cpp b/Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE_WiiMote.cpp
index 3c1d6f412e..d66bd09290 100644
--- a/Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE_WiiMote.cpp
+++ b/Source/Core/Core/Src/IPC_HLE/WII_IPC_HLE_WiiMote.cpp
@@ -665,7 +665,7 @@ void CWII_IPC_HLE_WiiMote::SendConfigurationRequest(u16 scid, u16 MTU, u16 Flush
 
 	SL2CAP_Options* pOptions;
 
-	if (MTU == NULL) MTU = rChannel.MTU;
+	if (MTU == 0) MTU = rChannel.MTU;
 	pOptions = (SL2CAP_Options*)&Buffer[Offset];
 	Offset += sizeof(SL2CAP_Options);
 	pOptions->type = 1;
@@ -673,7 +673,7 @@ void CWII_IPC_HLE_WiiMote::SendConfigurationRequest(u16 scid, u16 MTU, u16 Flush
 	*(u16*)&Buffer[Offset] = MTU;
 	Offset += 2;
 
-	if (FlushTimeOut == NULL) FlushTimeOut = rChannel.FlushTimeOut;
+	if (FlushTimeOut == 0) FlushTimeOut = rChannel.FlushTimeOut;
 	pOptions = (SL2CAP_Options*)&Buffer[Offset];
 	Offset += sizeof(SL2CAP_Options);
 	pOptions->type = 2;
diff --git a/Source/Core/Core/Src/PowerPC/Jit64IL/JitIL.cpp b/Source/Core/Core/Src/PowerPC/Jit64IL/JitIL.cpp
index b35df9b2d4..2806f39be7 100644
--- a/Source/Core/Core/Src/PowerPC/Jit64IL/JitIL.cpp
+++ b/Source/Core/Core/Src/PowerPC/Jit64IL/JitIL.cpp
@@ -373,7 +373,7 @@ void STACKALIGN JitIL::Jit(u32 em_address)
 	blocks.FinalizeBlock(block_num, jo.enableBlocklink, DoJit(em_address, &code_buffer, b));
 }
 
-const u8* JitIL::DoJit(u32 em_address, PPCAnalyst::CodeBuffer *code_buffer, JitBlock *b)
+const u8* JitIL::DoJit(u32 em_address, PPCAnalyst::CodeBuffer *buffer, JitBlock *b)
 {
 	if (em_address == 0)
 		PanicAlert("ERROR : Trying to compile at 0. LR=%08x", LR);
@@ -387,8 +387,8 @@ const u8* JitIL::DoJit(u32 em_address, PPCAnalyst::CodeBuffer *code_buffer, JitB
 
 	//Analyze the block, collect all instructions it is made of (including inlining,
 	//if that is enabled), reorder instructions for optimal performance, and join joinable instructions.
-	PPCAnalyst::Flatten(em_address, &size, &js.st, &js.gpa, &js.fpa, code_buffer);
-	PPCAnalyst::CodeOp *ops = code_buffer->codebuffer;
+	PPCAnalyst::Flatten(em_address, &size, &js.st, &js.gpa, &js.fpa, buffer);
+	PPCAnalyst::CodeOp *ops = buffer->codebuffer;
 
 	const u8 *start = AlignCode4(); //TODO: Test if this or AlignCode16 make a difference from GetCodePtr
 	b->checkedEntry = start;
diff --git a/Source/Core/DSPCore/Src/disassemble.cpp b/Source/Core/DSPCore/Src/disassemble.cpp
index 26e3c502e0..5d785f3cf6 100644
--- a/Source/Core/DSPCore/Src/disassemble.cpp
+++ b/Source/Core/DSPCore/Src/disassemble.cpp
@@ -97,7 +97,7 @@ char *DSPDisassembler::DisParams(const DSPOPCTemplate& opc, u16 op1, u16 op2, ch
 		if (j > 0)
 			buf += sprintf(buf, ", ");
 
-		u32 val = (opc.params[j].loc >= 1) ? val = op2 : val = op1;
+		u32 val = (opc.params[j].loc >= 1) ? op2 : op1;
 		val &= opc.params[j].mask;
 		if (opc.params[j].lshift < 0)
 			val = val << (-opc.params[j].lshift);
diff --git a/Source/Core/DebuggerUICommon/Src/MemoryView.cpp b/Source/Core/DebuggerUICommon/Src/MemoryView.cpp
index 20bc94074a..43067eab25 100644
--- a/Source/Core/DebuggerUICommon/Src/MemoryView.cpp
+++ b/Source/Core/DebuggerUICommon/Src/MemoryView.cpp
@@ -289,12 +289,12 @@ void CMemoryView::OnPaint(wxPaintEvent& event)
 	dc.DrawRectangle(0, 0, rc.width, 5+8);
 
 	// TODO - clean up this freaking mess!!!!!
-	for (int i = -numRows; i <= numRows; i++)
+	for (int row = -numRows; row <= numRows; row++)
 	{
-		unsigned int address = curAddress + i * align;
+		unsigned int address = curAddress + row * align;
 
-		int rowY1 = rc.height / 2 + rowHeight * i - rowHeight / 2;
-		int rowY2 = rc.height / 2 + rowHeight * i + rowHeight / 2;
+		int rowY1 = rc.height / 2 + rowHeight * row - rowHeight / 2;
+		int rowY2 = rc.height / 2 + rowHeight * row + rowHeight / 2;
 
 		wxString temp = wxString::Format(_T("%08x"), address);
 		u32 col = debugger->getColor(address);
@@ -309,7 +309,7 @@ void CMemoryView::OnPaint(wxPaintEvent& event)
 		}
 		else
 		{
-			dc.SetPen(i == 0 ? currentPen : nullPen);
+			dc.SetPen(row == 0 ? currentPen : nullPen);
 		}
 
 		if (address == debugger->getPC())
diff --git a/Source/Core/DebuggerWX/Src/JitWindow.cpp b/Source/Core/DebuggerWX/Src/JitWindow.cpp
index dee445084a..a1b922a0d1 100644
--- a/Source/Core/DebuggerWX/Src/JitWindow.cpp
+++ b/Source/Core/DebuggerWX/Src/JitWindow.cpp
@@ -181,7 +181,7 @@ void CJitWindow::Compare(u32 em_address)
 	PPCAnalyst::BlockRegStats fpa;
 	if (PPCAnalyst::Flatten(ppc_addr, &size, &st, &gpa, &fpa, &code_buffer))
 	{
-		char *sptr = (char*)xDis;
+		sptr = (char*)xDis;
 		for (int i = 0; i < size; i++)
 		{
 			const PPCAnalyst::CodeOp &op = code_buffer.codebuffer[i];
diff --git a/Source/Core/DebuggerWX/Src/MemoryWindow.cpp b/Source/Core/DebuggerWX/Src/MemoryWindow.cpp
index 8e4db3e26d..38fdbba659 100644
--- a/Source/Core/DebuggerWX/Src/MemoryWindow.cpp
+++ b/Source/Core/DebuggerWX/Src/MemoryWindow.cpp
@@ -400,9 +400,9 @@ void CMemoryWindow::onSearch(wxCommandEvent& event) {
 			if(k==size){
 				//Match was found
 				wxMessageBox(_T("A match was found. Placing viewer at the offset."));
-				wxChar tmpstr[128]={0};
-				wxSprintf(tmpstr,_T("%08x"),i);
-				wxString tmpwx(tmpstr);
+				wxChar tmpwxstr[128]={0};
+				wxSprintf(tmpwxstr,_T("%08x"),i);
+				wxString tmpwx(tmpwxstr);
 				addrbox->SetValue(tmpwx);
 				//memview->curAddress=i;
 				//memview->Refresh();
diff --git a/Source/Core/DolphinWX/Src/GameListCtrl.cpp b/Source/Core/DolphinWX/Src/GameListCtrl.cpp
index d4f78d868d..73e64c4e20 100644
--- a/Source/Core/DolphinWX/Src/GameListCtrl.cpp
+++ b/Source/Core/DolphinWX/Src/GameListCtrl.cpp
@@ -562,7 +562,7 @@ void CGameListCtrl::ScanForISOs()
 		std::vector<std::string> drives = cdio_get_devices();
 		GameListItem * Drive[24];
 		// Another silly Windows limitation of 24 drive letters
-		for (int i = 0; i < drives.size() != NULL && i < 24; i++)
+		for (int i = 0; i < drives.size() && i < 24; i++)
 		{
 			Drive[i] = new GameListItem(drives[i].c_str());
 			if (Drive[i]->IsValid())	m_ISOFiles.push_back(*Drive[i]);
diff --git a/Source/Core/DolphinWX/Src/Main.cpp b/Source/Core/DolphinWX/Src/Main.cpp
index e560a29381..b871303c50 100644
--- a/Source/Core/DolphinWX/Src/Main.cpp
+++ b/Source/Core/DolphinWX/Src/Main.cpp
@@ -300,7 +300,6 @@ bool DolphinApp::OnInit()
 			chdir(AppSupportDir);
 
 			//create all necessary dir in user directory
-			char user_path[500];
 			if (!File::Exists(File::GetUserPath(D_CONFIG_IDX))) File::CreateDir(File::GetUserPath(D_CONFIG_IDX));
 			if (!File::Exists(File::GetUserPath(D_GCUSER_IDX))) File::CreateFullPath(File::GetUserPath(D_GCUSER_IDX));
 			if (!File::Exists(File::GetUserPath(D_WIISYSCONF_IDX))) File::CreateFullPath(File::GetUserPath(D_WIISYSCONF_IDX));
diff --git a/Source/Core/DolphinWX/Src/MemoryCards/WiiSaveCrypted.cpp b/Source/Core/DolphinWX/Src/MemoryCards/WiiSaveCrypted.cpp
index eabbad42d6..8650ac12ed 100644
--- a/Source/Core/DolphinWX/Src/MemoryCards/WiiSaveCrypted.cpp
+++ b/Source/Core/DolphinWX/Src/MemoryCards/WiiSaveCrypted.cpp
@@ -538,7 +538,7 @@ bool CWiiSaveCrypted::getPaths(bool _export)
 	return true;
 }
 
-void CWiiSaveCrypted::ScanForFiles(std::string savDir, std::vector<std::string>&FilesList, u32 *_numFiles, u32 *_sizeFiles)
+void CWiiSaveCrypted::ScanForFiles(std::string savDir, std::vector<std::string>& FileList, u32 *_numFiles, u32 *_sizeFiles)
 {
 	std::vector<std::string> Directories;
 	*_numFiles = *_sizeFiles = 0;
@@ -546,7 +546,7 @@ void CWiiSaveCrypted::ScanForFiles(std::string savDir, std::vector<std::string>&
 	Directories.push_back(savDir);
 	for (u32 i = 0; i < Directories.size(); i++)
 	{
-		if (i)	FilesList.push_back(Directories.at(i));//add dir to fst
+		if (i) FileList.push_back(Directories.at(i));//add dir to fst
 
 		File::FSTEntry FST_Temp;
 		File::ScanDirectoryTree(Directories.at(i).c_str(), FST_Temp);
@@ -564,7 +564,7 @@ void CWiiSaveCrypted::ScanForFiles(std::string savDir, std::vector<std::string>&
 				}
 				else
 				{				
-					FilesList.push_back(FST_Temp.children.at(j).physicalName);
+					FileList.push_back(FST_Temp.children.at(j).physicalName);
 				}
 			}
 		}
diff --git a/Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_Zelda.cpp b/Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_Zelda.cpp
index 75d160023c..ffa8e861ed 100644
--- a/Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_Zelda.cpp
+++ b/Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_Zelda.cpp
@@ -34,11 +34,11 @@ CUCode_Zelda::CUCode_Zelda(CMailHandler& _rMailHandler, u32 _CRC)
 	IUCode(_rMailHandler),
 	m_CRC(_CRC),
 
-	m_NumSyncMail(0),
-
 	m_bSyncInProgress(false),
 	m_MaxVoice(0),
 
+	m_NumSyncMail(0),
+
 	m_NumVoices(0),
 
 	m_bSyncCmdPending(false),
diff --git a/Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_Zelda_Voice.cpp b/Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_Zelda_Voice.cpp
index 5ff47bef51..3a307a5f1e 100644
--- a/Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_Zelda_Voice.cpp
+++ b/Source/Plugins/Plugin_DSP_HLE/Src/UCodes/UCode_Zelda_Voice.cpp
@@ -426,7 +426,7 @@ void CUCode_Zelda::RenderVoice_Raw(ZeldaVoicePB &PB, s16 *_Buffer, int _Size)
 		ERROR_LOG(DSPHLE, "Raw loop: ReadAudio size = %04x 34:%04x %08x", PB.Unk36[0], PB.raw[0x34 ^ 1], (int)ACC0);
 		Decoder21_ReadAudio(PB, PB.Unk36[0], _Buffer);
 
-		u32 ACC0 = _Size << 16;
+		ACC0 = _Size << 16;
 		ACC0 -= PB.Unk36[0] << 16;
 
 		PB.raw[0x34 ^ 1] = 0;
diff --git a/Source/Plugins/Plugin_GCPad/Src/ConfigJoypad.cpp b/Source/Plugins/Plugin_GCPad/Src/ConfigJoypad.cpp
index f68e09905d..074ada733c 100644
--- a/Source/Plugins/Plugin_GCPad/Src/ConfigJoypad.cpp
+++ b/Source/Plugins/Plugin_GCPad/Src/ConfigJoypad.cpp
@@ -32,12 +32,12 @@
 
 
 // Replace the harder to understand -1 with "" for the sake of user friendliness
-void GCPadConfigDialog::ToBlank(bool ToBlank, int Id)
+void GCPadConfigDialog::ToBlank(bool toBlank, int Id)
 {
 	if (!m_ControlsCreated)
 		return;
 
-	if(ToBlank)
+	if(toBlank)
 	{
 		if (GetButtonText(Id) == wxString(wxT("-1")))
 			SetButtonText(Id, wxString());
diff --git a/Source/Plugins/Plugin_VideoSoftware/Src/Clipper.cpp b/Source/Plugins/Plugin_VideoSoftware/Src/Clipper.cpp
index 4fd467a8ca..6b7bdcb5ea 100644
--- a/Source/Plugins/Plugin_VideoSoftware/Src/Clipper.cpp
+++ b/Source/Plugins/Plugin_VideoSoftware/Src/Clipper.cpp
@@ -160,7 +160,7 @@ namespace Clipper
 
         if (mask != 0)
         {
-		    for(int idx = 0; idx < 3; idx += 3)
+		    for(int i = 0; i < 3; i += 3)
             {
                 int vlist[2][2*6+1];
 		        int *inlist = vlist[0], *outlist = vlist[1];
diff --git a/Source/Plugins/Plugin_VideoSoftware/Src/TextureEncoder.cpp b/Source/Plugins/Plugin_VideoSoftware/Src/TextureEncoder.cpp
index 4e7f00f1da..7fec0b583d 100644
--- a/Source/Plugins/Plugin_VideoSoftware/Src/TextureEncoder.cpp
+++ b/Source/Plugins/Plugin_VideoSoftware/Src/TextureEncoder.cpp
@@ -101,7 +101,7 @@ inline void boxfilterRGBA_to_RGB8(u8 *src, u8 &r, u8 &g, u8 &b)
     b = (b16 << 6) / 142;
 }
 
-inline void boxfilterRGBA_to_x8(u8 *src, u8 &x, int shift)
+inline void boxfilterRGBA_to_x8(u8 *src, u8 &x8, int shift)
 {
     u16 x16 = 0;
 
@@ -117,7 +117,7 @@ inline void boxfilterRGBA_to_x8(u8 *src, u8 &x, int shift)
         src += (640 - 3) * 3;
     }
 
-    x = (x16 << 6) / 142;
+    x8 = (x16 << 6) / 142;
 }
 
 inline void boxfilterRGBA_to_xx8(u8 *src, u8 &x1, u8 &x2, int shift1, int shift2)
@@ -164,7 +164,7 @@ inline void boxfilterRGB_to_RGB8(u8 *src, u8 &r, u8 &g, u8 &b)
     b = b16 / 9;
 }
 
-inline void boxfilterRGB_to_x8(u8 *src, u8 &x, int comp)
+inline void boxfilterRGB_to_x8(u8 *src, u8 &x8, int comp)
 {
     u16 x16 = 0;
 
@@ -179,7 +179,7 @@ inline void boxfilterRGB_to_x8(u8 *src, u8 &x, int comp)
         src += (640 - 3) * 3;
     }
 
-    x = x16 / 9;
+    x8 = x16 / 9;
 }
 
 inline void boxfilterRGB_to_xx8(u8 *src, u8 &x1, u8 &x2, int comp1, int comp2)