Fix arm64 build against current toolchain

Author: an1310

NESGameCore.mm

@@ -499,7 +499,7 @@ - (NSData *)serializeStateWithError:(NSError **)outError
             NSLocalizedRecoverySuggestionErrorKey : errorDescription
         }];
 
-        return NO;
+        return nil;
     }
 
     stateStream.seekg(0, std::ios::end);

Nestopia.xcodeproj/project.pbxproj

@@ -2288,7 +2288,10 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "org.openemu.${PRODUCT_NAME:identifier}";
 				PRODUCT_NAME = Nestopia;
 				SKIP_INSTALL = YES;
-				WARNING_CFLAGS = "-Wno-switch-enum";
+				WARNING_CFLAGS = (
+					"-Wno-switch-enum",
+					"-Wno-c++11-narrowing",
+				);
 				WRAPPER_EXTENSION = oecoreplugin;
 			};
 			name = Debug;
@@ -2310,7 +2313,10 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "org.openemu.${PRODUCT_NAME:identifier}";
 				PRODUCT_NAME = Nestopia;
 				SKIP_INSTALL = YES;
-				WARNING_CFLAGS = "-Wno-switch-enum";
+				WARNING_CFLAGS = (
+					"-Wno-switch-enum",
+					"-Wno-c++11-narrowing",
+				);
 				WRAPPER_EXTENSION = oecoreplugin;
 			};
 			name = Release;

core/NstPpu.cpp

@@ -312,17 +312,17 @@ namespace Nes
 			{
 				const byte data[11] =
 				{
-					regs.ctrl[0],
-					regs.ctrl[1],
-					regs.status,
-					scroll.address & 0xFF,
-					scroll.address >> 8,
-					scroll.latch & 0xFF,
-					scroll.latch >> 8,
-					scroll.xFine | scroll.toggle << 3,
-					regs.oam,
-					io.buffer,
-					io.latch
+					byte( regs.ctrl[0] ),
+					byte( regs.ctrl[1] ),
+					byte( regs.status ),
+					byte( scroll.address & 0xFF ),
+					byte( scroll.address >> 8 ),
+					byte( scroll.latch & 0xFF ),
+					byte( scroll.latch >> 8 ),
+					byte( scroll.xFine | scroll.toggle << 3 ),
+					byte( regs.oam ),
+					byte( io.buffer ),
+					byte( io.latch )
 				};
 
 				state.Begin( AsciiId<'R','E','G'>::V ).Write( data ).End();

core/input/NstInpTurboFile.cpp

@@ -65,9 +65,9 @@ namespace Nes
 
 				const byte data[3] =
 				{
-					pos & 0xFF,
-					pos >> 8,
-					count | (old << 1) | (out << 2)
+					byte( pos & 0xFF ),
+					byte( pos >> 8 ),
+					byte( count | (old << 1) | (out << 2) )
 				};
 
 				saver.Begin( AsciiId<'R','E','G'>::V ).Write( data ).End();

core/input/NstInpZapper.cpp

@@ -137,8 +137,8 @@ namespace Nes
 			{
 				const byte data[2] =
 				{
-					arcade ? shifter ? 0x1 : 0x3 : 0x0,
-					arcade ? stream : 0x00
+					byte( arcade ? shifter ? 0x1 : 0x3 : 0x0 ),
+					byte( arcade ? stream : 0x00 )
 				};
 
 				saver.Begin( AsciiId<'Z','P'>::R(0,0,id) ).Write( data ).End();