fixed all the errors that the clang static analayzer found

src/base/system.c

@@ -80,7 +80,7 @@ void dbg_assert_imp(const char *filename, int line, int test, const char *msg)
 
 void dbg_break()
 {
-	*((unsigned*)0) = 0x0;
+	*((volatile unsigned*)0) = 0x0;
 }
 
 void dbg_msg(const char *sys, const char *fmt, ...)
@@ -166,6 +166,8 @@ void *mem_alloc_debug(const char *filename, int line, unsigned size, unsigned al
 	MEMTAIL *tail;
 	MEMHEADER *header = (struct MEMHEADER *)malloc(size+sizeof(MEMHEADER)+sizeof(MEMTAIL));
 	dbg_assert(header != 0, "mem_alloc failure");
+	if(!header)
+		return NULL;
 	tail = (struct MEMTAIL *)(((char*)(header+1))+size);
 	header->size = size;
 	header->filename = filename;

src/base/system.h

@@ -33,6 +33,13 @@ void dbg_assert(int test, const char *msg);
 #define dbg_assert(test,msg) dbg_assert_imp(__FILE__, __LINE__, test, msg)
 void dbg_assert_imp(const char *filename, int line, int test, const char *msg);
 
+
+#ifdef __clang_analyzer__
+#include <assert.h>
+#undef dbg_assert
+#define dbg_assert(test,msg) assert(test)
+#endif
+
 /*
 	Function: dbg_break
 		Breaks into the debugger.

src/engine/client/client.cpp

@@ -1310,7 +1310,6 @@ void CClient::ProcessServerPacket(CNetChunk *pPacket)
 					}
 
 					// unpack delta
-					PurgeTick = DeltaTick;
 					SnapSize = m_SnapshotDelta.UnpackDelta(pDeltaShot, pTmpBuffer3, pDeltaData, DeltaSize);
 					if(SnapSize < 0)
 					{
@@ -1349,7 +1348,7 @@ void CClient::ProcessServerPacket(CNetChunk *pPacket)
 					if(m_aSnapshots[SNAP_PREV] && m_aSnapshots[SNAP_PREV]->m_Tick < PurgeTick)
 						PurgeTick = m_aSnapshots[SNAP_PREV]->m_Tick;
 					if(m_aSnapshots[SNAP_CURRENT] && m_aSnapshots[SNAP_CURRENT]->m_Tick < PurgeTick)
-						PurgeTick = m_aSnapshots[SNAP_PREV]->m_Tick;
+						PurgeTick = m_aSnapshots[SNAP_CURRENT]->m_Tick;
 					m_SnapshotStorage.PurgeUntil(PurgeTick);
 
 					// add new

src/engine/shared/console.cpp

@@ -68,7 +68,7 @@ int CConsole::ParseStart(CResult *pResult, const char *pString, int Length)
 	if(Length < Len)
 		Len = Length;
 
-	str_copy(pResult->m_aStringStorage, pString, Length);
+	str_copy(pResult->m_aStringStorage, pString, Len);
 	pStr = pResult->m_aStringStorage;
 
 	// get command

src/engine/shared/snapshot.cpp

@@ -195,13 +195,14 @@ int CSnapshotDelta::CreateDelta(CSnapshot *pFrom, CSnapshot *pTo, void *pDstData
 
 	// fetch previous indices
 	// we do this as a separate pass because it helps the cache
-	for(i = 0; i < pTo->NumItems(); i++)
+	const int NumItems = pTo->NumItems();
+	for(i = 0; i < NumItems; i++)
 	{
 		pCurItem = pTo->GetItem(i); // O(1) .. O(n)
 		aPastIndecies[i] = GetItemIndexHashed(pCurItem->Key(), Hashlist); // O(n) .. O(n^n)
 	}
 
-	for(i = 0; i < pTo->NumItems(); i++)
+	for(i = 0; i < NumItems; i++)
 	{
 		// do delta
 		ItemSize = pTo->GetItemSize(i); // O(1) .. O(n)
@@ -474,7 +475,7 @@ int CSnapshotStorage::Get(int Tick, int64 *pTagtime, CSnapshot **ppData, CSnapsh
 			if(ppData)
 				*ppData = pHolder->m_pSnap;
 			if(ppAltData)
-				*ppData = pHolder->m_pAltSnap;
+				*ppAltData = pHolder->m_pAltSnap;
 			return pHolder->m_SnapSize;
 		}
 

src/game/editor/editor.cpp

@@ -2292,8 +2292,6 @@ void CEditor::RenderLayers(CUIRect ToolBox, CUIRect ToolBar, CUIRect View)
 				if(Input()->KeyPresses(KEY_MOUSE_WHEEL_DOWN))
 					s_ScrollValue = clamp(s_ScrollValue + 1.0f/ScrollNum, 0.0f, 1.0f);
 			}
-			else
-				ScrollNum = 0;
 		}
 	}
 
@@ -2615,8 +2613,6 @@ void CEditor::RenderImages(CUIRect ToolBox, CUIRect ToolBar, CUIRect View)
 				if(Input()->KeyPresses(KEY_MOUSE_WHEEL_DOWN))
 					s_ScrollValue = clamp(s_ScrollValue + 1.0f/ScrollNum, 0.0f, 1.0f);
 			}
-			else
-				ScrollNum = 0;
 		}
 	}
 

src/game/editor/popups.cpp

@@ -554,7 +554,6 @@ int CEditor::PopupPoint(CEditor *pEditor, CUIRect View)
 		{
 			if(pEditor->m_SelectedPoints&(1<<v))
 			{
-				Color = 0;
 				pQuad->m_aColors[v].r = (NewVal>>24)&0xff;
 				pQuad->m_aColors[v].g = (NewVal>>16)&0xff;
 				pQuad->m_aColors[v].b = (NewVal>>8)&0xff;

src/game/server/gamecontext.cpp

@@ -598,10 +598,13 @@ void CGameContext::OnMessage(int MsgID, CUnpacker *pUnpacker, int ClientID)
 	CPlayer *pPlayer = m_apPlayers[ClientID];
 
 	if(!pRawMsg)
+	{
+		if(g_Config.m_Debug)
 		{
 			char aBuf[256];
 			str_format(aBuf, sizeof(aBuf), "dropped weird message '%s' (%d), failed on '%s'", m_NetObjHandler.GetMsgName(MsgID), MsgID, m_NetObjHandler.FailedMsgOn());
 			Console()->Print(IConsole::OUTPUT_LEVEL_DEBUG, "server", aBuf);
+		}
 		return;
 	}
 
@@ -940,7 +943,6 @@ void CGameContext::OnMessage(int MsgID, CUnpacker *pUnpacker, int ClientID)
 		{
 			OptionMsg.m_NumOptions = NumOptions;
 			Server()->SendPackMsg(&OptionMsg, MSGFLAG_VITAL, ClientID);
-			NumOptions = 0;
 		}
 
 		// send tuning parameters to client

src/game/server/gamecontroller.cpp

@@ -281,8 +281,8 @@ void IGameController::CycleMap()
 		pNextMap = pMapRotation;
 
 	// cut out the next map
-	char aBuf[512];
+	char aBuf[512] = {0};
-	for(int i = 0; i < 512; i++)
+	for(int i = 0; i < 511; i++)
 	{
 		aBuf[i] = pNextMap[i];
 		if(IsSeparator(pNextMap[i]) || pNextMap[i] == 0)