diff --git a/src/am_map.cpp b/src/am_map.cpp
index c6e6ba19ba..2f6c04c6d8 100644
--- a/src/am_map.cpp
+++ b/src/am_map.cpp
@@ -3088,7 +3088,7 @@ static void DrawMarker (FTexture *tex, double x, double y, int yadjust,
 		DTA_TranslationIndex, translation,
 		DTA_Alpha, alpha,
 		DTA_FillColor, fillcolor,
-		DTA_RenderStyle, uint32_t(renderstyle),
+		DTA_RenderStyle, renderstyle.AsDWORD,
 		TAG_DONE);
 }
 
diff --git a/src/r_data/renderstyle.h b/src/r_data/renderstyle.h
index 68bc9a2421..21c41278a5 100644
--- a/src/r_data/renderstyle.h
+++ b/src/r_data/renderstyle.h
@@ -133,7 +133,6 @@ union FRenderStyle
 	uint32_t AsDWORD;
 
 	inline FRenderStyle &operator= (ERenderStyle legacy);
-	operator uint32_t() const { return AsDWORD; }
 	bool operator==(const FRenderStyle &o) const { return AsDWORD == o.AsDWORD; }
 	void CheckFuzz();
 	bool IsVisible(double alpha) const throw();
diff --git a/src/textures/automaptexture.cpp b/src/textures/automaptexture.cpp
index 27080669ee..c07eded6ed 100644
--- a/src/textures/automaptexture.cpp
+++ b/src/textures/automaptexture.cpp
@@ -51,7 +51,6 @@ class FAutomapTexture : public FWorldTexture
 {
 public:
 	FAutomapTexture(int lumpnum);
-	~FAutomapTexture ();
 	uint8_t *MakeTexture (FRenderStyle style);
 };
 
diff --git a/src/textures/jpegtexture.cpp b/src/textures/jpegtexture.cpp
index abf1e34ec4..93aac09ca0 100644
--- a/src/textures/jpegtexture.cpp
+++ b/src/textures/jpegtexture.cpp
@@ -183,7 +183,6 @@ class FJPEGTexture : public FWorldTexture
 {
 public:
 	FJPEGTexture (int lumpnum, int width, int height);
-	~FJPEGTexture ();
 
 	FTextureFormat GetFormat () override;
 	int CopyTrueColorPixels(FBitmap *bmp, int x, int y, int rotate, FCopyInfo *inf = NULL) override;
diff --git a/src/textures/pcxtexture.cpp b/src/textures/pcxtexture.cpp
index efe12e3c21..f5635c7a38 100644
--- a/src/textures/pcxtexture.cpp
+++ b/src/textures/pcxtexture.cpp
@@ -85,7 +85,6 @@ class FPCXTexture : public FWorldTexture
 {
 public:
 	FPCXTexture (int lumpnum, PCXHeader &);
-	~FPCXTexture ();
 
 	FTextureFormat GetFormat () override;
 
diff --git a/src/textures/rawpagetexture.cpp b/src/textures/rawpagetexture.cpp
index 7e9268c6e4..adf8abffff 100644
--- a/src/textures/rawpagetexture.cpp
+++ b/src/textures/rawpagetexture.cpp
@@ -50,7 +50,6 @@ class FRawPageTexture : public FWorldTexture
 {
 public:
 	FRawPageTexture (int lumpnum);
-	~FRawPageTexture ();
 	uint8_t *MakeTexture (FRenderStyle style) override;
 };
 
diff --git a/src/textures/shadertexture.cpp b/src/textures/shadertexture.cpp
index 2834c93189..67d4db683a 100644
--- a/src/textures/shadertexture.cpp
+++ b/src/textures/shadertexture.cpp
@@ -134,6 +134,7 @@ public:
 	int CopyTrueColorPixels(FBitmap *bmp, int x, int y, int rotate, FCopyInfo *inf = NULL) override
 	{
 		bmp->CopyPixelData(x, y, Pixels, Width, Height, Height, 1, rotate, translationtables[TRANSLATION_Standard][8]->Palette, inf);
+		return 0;
 	}
 
 	bool UseBasePalette() override
diff --git a/src/v_palette.cpp b/src/v_palette.cpp
index 436fe84dcd..af4aae4fba 100644
--- a/src/v_palette.cpp
+++ b/src/v_palette.cpp
@@ -374,9 +374,7 @@ static bool FixBuildPalette (uint8_t *opal, int lump, bool blood)
 void InitPalette ()
 {
 	uint8_t pal[768];
-	bool usingBuild = false;
-	int lump;
-
+	
 	ReadPalette(Wads.CheckNumForName("PLAYPAL"), pal);
 
 	GPalette.SetPalette (pal);