Compile with all warnings, warnings as errors

CMakeLists.txt

@@ -13,6 +13,16 @@ if (NOT BUILD_SHARED_LIBS)
  add_definitions(-DVR_EMU_TMS9918_STATIC)
 endif()
 
+if (PROJECT_IS_TOP_LEVEL)
+	if(MSVC)
+	  add_compile_options(/W4 /WX)
+	  add_compile_options(/arch:AVX2 /Ox)
+	else()
+	  add_compile_options(-Wall -Wextra -Wpedantic -Werror)
+	  add_compile_options(-march=native)
+	endif()
+endif()
+
 include(CTest)
 
 add_subdirectory(src)

src/vrEmuTms9918.c

@@ -438,8 +438,10 @@ static void __time_critical_func(vrEmuTms9918OutputSprites)(VrEmuTms9918* tms991
 
     if (spritesShown == 0)
     {
-      int *rsbInt = (int*)tms9918->rowSpriteBits;
-      for (int i = 0; i < sizeof(tms9918->rowSpriteBits) / sizeof(int); ++i)
+      int* rsbInt = (int*)tms9918->rowSpriteBits;
+      int* end = rsbInt + sizeof(tms9918->rowSpriteBits) / sizeof(int);
+
+      while (rsbInt < end)
       {
         *rsbInt++ = 0;
       }
@@ -571,7 +573,7 @@ static void __time_critical_func(vrEmuTms9918GraphicsIIScanLine)(VrEmuTms9918* t
   const uint8_t nameMask = ((tms9918->registers[TMS_REG_COLOR_TABLE] & 0x7f) << 3) | 0x07;
 
   const uint16_t pageThird = ((tileY & 0x18) >> 3)
-                              & (tms9918->registers[TMS_REG_PATTERN_TABLE] & 0x03); /* which page? 0-2 */
+    & (tms9918->registers[TMS_REG_PATTERN_TABLE] & 0x03); /* which page? 0-2 */
   const uint16_t pageOffset = pageThird << 11; /* offset (0, 0x800 or 0x1000) */
 
   const uint8_t* patternTable = tms9918->vram + tmsPatternTableAddr(tms9918) + pageOffset;

src/vrEmuTms9918Util.c

@@ -107,4 +107,4 @@ void vrEmuTms9918InitialiseGfxII(VrEmuTms9918* tms9918)
     vrEmuTms9918WriteData(tms9918, i & 0xff);
   }
 
-}
+}