diff --git a/dumb/CMakeLists.txt b/dumb/CMakeLists.txt
index b590aa165..fd8cdd968 100644
--- a/dumb/CMakeLists.txt
+++ b/dumb/CMakeLists.txt
@@ -8,7 +8,7 @@ include( CheckCXXCompilerFlag )
 set( CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -D_DEBUG -DDEBUGMODE=1" )
 
 if( ZD_CMAKE_COMPILER_IS_GNUC_COMPATIBLE )
-	set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wno-pointer-sign -Wno-uninitialized" )
+	set( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wno-pointer-sign -Wno-uninitialized -Wno-unused-but-set-variable" )
 endif( ZD_CMAKE_COMPILER_IS_GNUC_COMPATIBLE )
 
 CHECK_FUNCTION_EXISTS( itoa ITOA_EXISTS )
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index e161a85dd..40503f8e9 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -286,16 +286,19 @@ if( NO_FMOD )
 endif( NO_FMOD )
 if( NO_OPENAL )
 	add_definitions( -DNO_OPENAL=1 )
+
+	set(MPG123_FOUND NO)
+	set(SNDFILE_FOUND NO)
+else( NO_OPENAL )
+	# Search for libSndFile
+
+	find_package( SndFile )
+
+	# Search for libmpg123
+
+	find_package( MPG123 )
 endif( NO_OPENAL )
 
-# Search for libSndFile
-
-find_package( SndFile )
-
-# Search for libmpg123
-
-find_package( MPG123 )
-
 # Search for FluidSynth
 
 find_package( FluidSynth )
@@ -456,7 +459,8 @@ if( ZD_CMAKE_COMPILER_IS_GNUCXX_COMPATIBLE )
 	set( CMAKE_CXX_FLAGS_MINSIZEREL "${REL_CXX_FLAGS} ${CMAKE_CXX_FLAGS_MINSIZEREL}" )
 	set( CMAKE_CXX_FLAGS_RELWITHDEBINFO "${REL_CXX_FLAGS} ${CMAKE_CXX_FLAGS_RELWITHDEBINFO}" )
 
-	set( CMAKE_CXX_FLAGS "-Wall -Wextra -Wno-unused -Wno-unused-parameter -Wno-missing-field-initializers ${CMAKE_CXX_FLAGS}" )
+	set( CMAKE_C_FLAGS "-Wall -Wextra -Wno-unused -Wno-unused-parameter -Wno-missing-field-initializers -Wno-unused-result ${CMAKE_C_FLAGS}" )
+	set( CMAKE_CXX_FLAGS "-Wall -Wextra -Wno-unused -Wno-unused-parameter -Wno-missing-field-initializers -Wno-unused-result ${CMAKE_CXX_FLAGS}" )
 
 	# Remove extra warnings when using the official DirectX headers.
 	# Also, TDM-GCC 4.4.0 no longer accepts glibc-style printf formats as valid,
diff --git a/src/c_cmds.cpp b/src/c_cmds.cpp
index 3cfbf1c65..233c31d29 100644
--- a/src/c_cmds.cpp
+++ b/src/c_cmds.cpp
@@ -1083,8 +1083,15 @@ CCMD(nextsecret)
 CCMD(currentpos)
 {
 	AActor *mo = players[consoleplayer].mo;
-	Printf("Current player position: (%1.3f,%1.3f,%1.3f), angle: %1.3f, floorheight: %1.3f, sector:%d, lightlevel: %d\n",
-		FIXED2FLOAT(mo->X()), FIXED2FLOAT(mo->Y()), FIXED2FLOAT(mo->Z()), mo->angle/float(ANGLE_1), FIXED2FLOAT(mo->floorz), mo->Sector->sectornum, mo->Sector->lightlevel);
+	if(mo)
+	{
+		Printf("Current player position: (%1.3f,%1.3f,%1.3f), angle: %1.3f, floorheight: %1.3f, sector:%d, lightlevel: %d\n",
+			FIXED2FLOAT(mo->X()), FIXED2FLOAT(mo->Y()), FIXED2FLOAT(mo->Z()), mo->angle/float(ANGLE_1), FIXED2FLOAT(mo->floorz), mo->Sector->sectornum, mo->Sector->lightlevel);
+	}
+	else
+	{
+		Printf("You are not in game!");
+	}
 }
 
 //-----------------------------------------------------------------------------
diff --git a/src/g_shared/sbarinfo_commands.cpp b/src/g_shared/sbarinfo_commands.cpp
index 2f7739a4f..f91d5841c 100644
--- a/src/g_shared/sbarinfo_commands.cpp
+++ b/src/g_shared/sbarinfo_commands.cpp
@@ -412,6 +412,21 @@ class CommandDrawSwitchableImage : public CommandDrawImage
 					return compare != value;
 			}
 		}
+		// Key species are used to allow altnerates for existing key slots.
+		static FName LookupKeySpecies(int keynum)
+		{
+			for(unsigned int i = 0;i < PClass::m_Types.Size();++i)
+			{
+				const PClass *cls = PClass::m_Types[i];
+				if(cls->IsDescendantOf(RUNTIME_CLASS(AKey)))
+				{
+					AKey *key = (AKey *)GetDefaultByType(cls);
+					if(key->KeyNumber == keynum)
+						return cls->TypeName;
+				}
+			}
+			return FName();
+		}
 
 	public:
 		CommandDrawSwitchableImage(SBarInfo *script) : CommandDrawImage(script),
@@ -442,6 +457,7 @@ class CommandDrawSwitchableImage : public CommandDrawImage
 					condition = KEYSLOT;
 					sc.MustGetToken(TK_IntConst);
 					conditionalValue[0] = sc.Number;
+					keySpecies[0] = LookupKeySpecies(conditionalValue[0]);
 				}
 				else if(sc.Compare("armortype"))
 				{
@@ -468,6 +484,8 @@ class CommandDrawSwitchableImage : public CommandDrawImage
 				{
 					sc.MustGetToken(TK_IntConst);
 					conditionalValue[1] = sc.Number;
+					if(condition == KEYSLOT)
+						keySpecies[1] = LookupKeySpecies(conditionalValue[1]);
 				}
 				else if(condition == ARMORTYPE)
 				{
@@ -541,11 +559,21 @@ class CommandDrawSwitchableImage : public CommandDrawImage
 					if(item->IsKindOf(RUNTIME_CLASS(AKey)))
 					{
 						int keynum = static_cast<AKey *>(item)->KeyNumber;
-		
-						if(keynum == conditionalValue[0])
-							found1 = true;
-						if(conditionAnd && keynum == conditionalValue[1]) // two keys
-							found2 = true;
+						if(keynum)
+						{
+							if(keynum == conditionalValue[0])
+								found1 = true;
+							if(conditionAnd && keynum == conditionalValue[1]) // two keys
+								found2 = true;
+						}
+						else
+						{
+							FName species = item->GetSpecies();
+							if(species == keySpecies[0])
+								found1 = true;
+							if(conditionAnd && species == keySpecies[1])
+								found2 = true;
+						}
 					}
 				}
 
@@ -639,6 +667,7 @@ class CommandDrawSwitchableImage : public CommandDrawImage
 		Operator	conditionalOperator[2];
 		FString		inventoryItem[2];
 		int			armorType[2];
+		FName		keySpecies[2];
 };
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -1595,7 +1624,7 @@ class CommandDrawSelectedInventory : public CommandDrawImage, private CommandDra
 	public:
 		CommandDrawSelectedInventory(SBarInfo *script) : CommandDrawImage(script),
 			CommandDrawNumber(script), alternateOnEmpty(false),
-			artiflash(false), alwaysShowCounter(false)
+			artiflash(false), alwaysShowCounter(false), itemflash(false)
 		{
 			length = INT_MAX; // Counter size
 		}
diff --git a/src/intermission/intermission.cpp b/src/intermission/intermission.cpp
index a19d0a479..44f52485c 100644
--- a/src/intermission/intermission.cpp
+++ b/src/intermission/intermission.cpp
@@ -722,7 +722,10 @@ DIntermissionController::DIntermissionController(FIntermissionDescriptor *Desc,
 	mScreen = NULL;
 	mFirst = true;
 	mGameState = state;
-	NextPage();
+
+	// If the intermission finishes straight away then cancel the wipe.
+	if(!NextPage())
+		wipegamestate = GS_FINALE;
 }
 
 bool DIntermissionController::NextPage ()
diff --git a/src/p_mobj.cpp b/src/p_mobj.cpp
index 32a20e321..67f7d1685 100644
--- a/src/p_mobj.cpp
+++ b/src/p_mobj.cpp
@@ -5939,7 +5939,7 @@ AActor *P_SpawnPlayerMissile (AActor *source, fixed_t x, fixed_t y, fixed_t z,
 							  const PClass *type, angle_t angle, AActor **pLineTarget, AActor **pMissileActor,
 							  bool nofreeaim, bool noautoaim)
 {
-	static const int angdiff[3] = { -1<<26, 1<<26, 0 };
+	static const int angdiff[3] = { -(1<<26), 1<<26, 0 };
 	angle_t an = angle;
 	angle_t pitch;
 	AActor *linetarget;
diff --git a/src/p_pspr.cpp b/src/p_pspr.cpp
index 7cdef059c..0ced8f004 100644
--- a/src/p_pspr.cpp
+++ b/src/p_pspr.cpp
@@ -891,7 +891,7 @@ DEFINE_ACTION_FUNCTION_PARAMS(AInventory, A_GunFlash)
 
 angle_t P_BulletSlope (AActor *mo, AActor **pLineTarget)
 {
-	static const int angdiff[3] = { -1<<26, 1<<26, 0 };
+	static const int angdiff[3] = { -(1<<26), 1<<26, 0 };
 	int i;
 	angle_t an;
 	angle_t pitch;
diff --git a/src/p_spec.cpp b/src/p_spec.cpp
index 2cb322278..0dcf5124a 100644
--- a/src/p_spec.cpp
+++ b/src/p_spec.cpp
@@ -1223,7 +1223,7 @@ void P_InitSectorSpecial(sector_t *sector, int special, bool nothinkers)
 		if (!nothinkers)
 		{
 			new DStrobe(sector, STROBEBRIGHT, FASTDARK, false);
-			new DScroller(DScroller::sc_floor, (-FRACUNIT / 2) << 3,
+			new DScroller(DScroller::sc_floor, -((FRACUNIT / 2) << 3),
 				0, -1, int(sector - sectors), 0);
 		}
 		keepspecial = true;
diff --git a/src/p_teleport.cpp b/src/p_teleport.cpp
index ab860bfe9..85b668bf0 100644
--- a/src/p_teleport.cpp
+++ b/src/p_teleport.cpp
@@ -108,7 +108,7 @@ bool P_Teleport (AActor *thing, fixed_t x, fixed_t y, fixed_t z, angle_t angle,
 	sector_t *destsect;
 	bool resetpitch = false;
 	fixed_t floorheight, ceilingheight;
-	fixed_t missilespeed;
+	fixed_t missilespeed = 0;
 
 	old = thing->Pos();
 	aboveFloor = thing->Z() - thing->floorz;
diff --git a/src/r_data/r_interpolate.cpp b/src/r_data/r_interpolate.cpp
index 82e27abb4..4ce3a3c7b 100644
--- a/src/r_data/r_interpolate.cpp
+++ b/src/r_data/r_interpolate.cpp
@@ -447,8 +447,6 @@ void DSectorPlaneInterpolation::UpdateInterpolation()
 		oldheight = sector->ceilingplane.d;
 		oldtexz = sector->GetPlaneTexZ(sector_t::ceiling);
 	}
-	if (oldtexz <-128*FRACUNIT)
-		__asm nop
 }
 
 //==========================================================================
diff --git a/src/s_sound.cpp b/src/s_sound.cpp
index 2a9703ae4..c05ef1036 100644
--- a/src/s_sound.cpp
+++ b/src/s_sound.cpp
@@ -676,52 +676,55 @@ static void CalcPosVel(int type, const AActor *actor, const sector_t *sector,
 			z = y = x = 0;
 		}
 
-		switch (type)
+		// [BL] Moved this case out of the switch statement to make code easier
+		//      on static analysis.
+		if(type == SOURCE_Unattached)
 		{
-		case SOURCE_None:
-		default:
-			break;
-
-		case SOURCE_Actor:
-//			assert(actor != NULL);
-			if (actor != NULL)
-			{
-				x = actor->SoundX();
-				y = actor->SoundZ();
-				z = actor->SoundY();
-			}
-			break;
-
-		case SOURCE_Sector:
-			assert(sector != NULL);
-			if (sector != NULL)
-			{
-				if (chanflags & CHAN_AREA)
-				{
-					CalcSectorSoundOrg(sector, channum, &x, &z, &y);
-				}
-				else
-				{
-					x = sector->soundorg[0];
-					z = sector->soundorg[1];
-					chanflags |= CHAN_LISTENERZ;
-				}
-			}
-			break;
-
-		case SOURCE_Polyobj:
-			assert(poly != NULL);
-			CalcPolyobjSoundOrg(poly, &x, &z, &y);
-			break;
-
-		case SOURCE_Unattached:
 			pos->X = pt[0];
 			pos->Y = !(chanflags & CHAN_LISTENERZ) ? pt[1] : FIXED2FLOAT(y);
 			pos->Z = pt[2];
-			break;
 		}
-		if (type != SOURCE_Unattached)
+		else
 		{
+			switch (type)
+			{
+			case SOURCE_None:
+			default:
+				break;
+
+			case SOURCE_Actor:
+				//assert(actor != NULL);
+				if (actor != NULL)
+				{
+					x = actor->SoundX();
+					y = actor->SoundZ();
+					z = actor->SoundY();
+				}
+				break;
+
+			case SOURCE_Sector:
+				assert(sector != NULL);
+				if (sector != NULL)
+				{
+					if (chanflags & CHAN_AREA)
+					{
+						CalcSectorSoundOrg(sector, channum, &x, &z, &y);
+					}
+					else
+					{
+						x = sector->soundorg[0];
+						z = sector->soundorg[1];
+						chanflags |= CHAN_LISTENERZ;
+					}
+				}
+				break;
+
+			case SOURCE_Polyobj:
+				assert(poly != NULL);
+				CalcPolyobjSoundOrg(poly, &x, &z, &y);
+				break;
+			}
+
 			if ((chanflags & CHAN_LISTENERZ) && players[consoleplayer].camera != NULL)
 			{
 				y = players[consoleplayer].camera != NULL ? players[consoleplayer].camera->SoundZ() : 0;
diff --git a/src/v_font.cpp b/src/v_font.cpp
index 5fc2994fb..e30f8352d 100644
--- a/src/v_font.cpp
+++ b/src/v_font.cpp
@@ -1059,7 +1059,9 @@ void FSingleLumpFont::LoadTranslations()
 			break;
 
 		default:
-			break;
+			// Should be unreachable.
+			I_Error("Unknown font type in FSingleLumpFont::LoadTranslation.");
+			return;
 	}
 
 	for(unsigned int i = 0;i < count;++i)