fix: fix safe num overflow ops issue under MSVC

src/CMakeLists.txt

@@ -113,6 +113,9 @@ target_compile_options(YYCCommonplace
 PUBLIC
     # Order build as UTF-8 in MSVC
     $<$<CXX_COMPILER_ID:MSVC>:/utf-8>
+    # Order preprocessor conformance mode (fix __VA_OPT__ error in MSVC)
+    $<$<CXX_COMPILER_ID:MSVC>:/Zc:preprocessor>
+
 )
 
 # Fix GCC std::stacktrace link error

src/yycc/carton/pycodec.cpp

@@ -393,6 +393,15 @@ namespace yycc::carton::pycodec {
 #endif
     }
 
+    // YYC MARK:
+    // Define a macro for following class ctor
+    // We only need initialize member if we are in Iconv environment.
+#if defined(YYCC_PYCODEC_WIN32_BACKEND)
+#define CTOR_INITLIST_TYPE1
+#else
+#define CTOR_INITLIST_TYPE1 : inner()
+#endif
+
 #pragma endregion
 
 #pragma region Char -> UTF8
@@ -447,7 +456,7 @@ namespace yycc::carton::pycodec {
 
 #pragma region WChar -> UTF8
 
-    WcharToUtf8::WcharToUtf8() : inner() {}
+    WcharToUtf8::WcharToUtf8() CTOR_INITLIST_TYPE1 {}
 
     WcharToUtf8::~WcharToUtf8() {}
 
@@ -463,7 +472,7 @@ namespace yycc::carton::pycodec {
 
 #pragma region UTF8 -> WChar
 
-    Utf8ToWchar::Utf8ToWchar() : inner() {}
+    Utf8ToWchar::Utf8ToWchar() CTOR_INITLIST_TYPE1 {}
 
     Utf8ToWchar::~Utf8ToWchar() {}
 
@@ -479,7 +488,7 @@ namespace yycc::carton::pycodec {
 
 #pragma region UTF8 -> UTF16
 
-    Utf8ToUtf16::Utf8ToUtf16() : inner() {}
+    Utf8ToUtf16::Utf8ToUtf16() CTOR_INITLIST_TYPE1 {}
 
     Utf8ToUtf16::~Utf8ToUtf16() {}
 
@@ -495,7 +504,7 @@ namespace yycc::carton::pycodec {
 
 #pragma region UTF16 -> UTF8
 
-    Utf16ToUtf8::Utf16ToUtf8() : inner() {}
+    Utf16ToUtf8::Utf16ToUtf8() CTOR_INITLIST_TYPE1 {}
 
     Utf16ToUtf8::~Utf16ToUtf8() {}
 
@@ -511,7 +520,7 @@ namespace yycc::carton::pycodec {
 
 #pragma region UTF8 -> UTF32
 
-    Utf8ToUtf32::Utf8ToUtf32() : inner() {}
+    Utf8ToUtf32::Utf8ToUtf32() CTOR_INITLIST_TYPE1 {}
 
     Utf8ToUtf32::~Utf8ToUtf32() {}
 
@@ -527,7 +536,7 @@ namespace yycc::carton::pycodec {
 
 #pragma region UTF32 -> UTF8
 
-    Utf32ToUtf8::Utf32ToUtf8() : inner() {}
+    Utf32ToUtf8::Utf32ToUtf8() CTOR_INITLIST_TYPE1 {}
 
     Utf32ToUtf8::~Utf32ToUtf8() {}
 

src/yycc/num/safe_op.hpp

@@ -17,6 +17,11 @@
 
 // Import essential header if we are using Windows function family.
 #if defined(YYCC_HARDWARE_OVERFLOW_WIN32_FNS)
+// YYC MARK:
+// This macro is crucial for including "intsafe.h"
+// Without this, "intsafe.h" will not enable signed integral operations.
+#define ENABLE_INTSAFE_SIGNED_FUNCTIONS
+
 #include "../windows/import_guard_head.hpp"
 #include <intsafe.h>
 #include "../windows/import_guard_tail.hpp"