Fix INTERNAL definition on Windows.

include/common.hpp

@@ -23,16 +23,20 @@ E.g.
 
 	DEPRECATED void foo();
 */
-#if defined(__GNUC__) || defined(__clang__)
+#if defined __GNUC__ || defined __clang__
 	#define DEPRECATED __attribute__((deprecated))
-#elif defined(_MSC_VER)
+#elif defined _MSC_VER
 	#define DEPRECATED __declspec(deprecated)
 #endif
 
 /** Attribute for private functions and symbols not intended to be used by plugins.
 By default this does nothing, but when #including rack.hpp, it prints a compile-time warning.
 */
-#define INTERNAL __attribute__((visibility("hidden")))
+#if defined ARCH_WIN
+	#define INTERNAL
+#else
+	#define INTERNAL __attribute__((visibility("hidden")))
+#endif
 
 
 /** Concatenates two literals or two macros

include/rack.hpp

@@ -100,7 +100,11 @@
 
 
 #undef INTERNAL
-#define INTERNAL __attribute__((visibility("hidden"))) __attribute__((error("Using function or symbol internal to Rack")))
+#if defined ARCH_WIN
+	#define INTERNAL __attribute__((error("Using internal Rack function or symbol")))
+#elif
+	#define INTERNAL __attribute__((visibility("hidden"))) __attribute__((error("Using internal Rack function or symbol")))
+#endif
 
 
 namespace rack {

src/system.cpp

@@ -520,7 +520,7 @@ std::string getStackTrace() {
 
 	for (int i = 1; i < stackLen; i++) {
 		SymFromAddr(process, (DWORD64) stack[i], 0, symbol);
-		s += string::f("%d: %s 0x%0x\n", stackLen - i - 1, symbol->Name, symbol->Address);
+		s += string::f("%d: %s 0x%" PRIx64 "\n", stackLen - i - 1, symbol->Name, symbol->Address);
 	}
 	free(symbol);
 #endif
@@ -608,7 +608,7 @@ std::string getOperatingSystemInfo() {
 	info.dwOSVersionInfoSize = sizeof(info);
 	GetVersionExW(&info);
 	// See https://docs.microsoft.com/en-us/windows/desktop/api/winnt/ns-winnt-_osversioninfoa for a list of Windows version numbers.
-	return string::f("Windows %u.%u", info.dwMajorVersion, info.dwMinorVersion);
+	return string::f("Windows %lu.%lu", info.dwMajorVersion, info.dwMinorVersion);
 #endif
 }