Re: wrapping C code - my exercise in incompetence.
- Posted by jmduro Jan 12, 2016
- 2233 views
PeteE said...
Correct. The ifdef BITS32 in his code prevents the bug on 32-bit platforms, so I can see how it can seem to be ifdef-related.
Could you explain please? When I extract the portion between ifdefs, I still don't understand where I have to correct the code because I didn't catch the logic behind ifdef management.
ifdef EU4_0 then case C_INT, C_BOOL, C_LONG, C_HRESULT, C_LPARAM, C_WPARAM then -- 32-bit signed (#01000004) lg += 4 case C_UINT, C_DWORD, C_HANDLE, C_HWND, C_POINTER, C_SIZE_T, C_ULONG then -- 32-bit unsigned (#02000004) lg += 4 elsifdef EU4_1 then case C_BOOL, C_INT then -- 32-bit signed (#01000004) lg += 4 case C_DWORD, C_UINT then -- 32-bit unsigned (#02000004) lg += 4 case C_DWORDLONG, C_LONGLONG then -- 64-bit integer (#03000002) lg += 8 ifdef BITS32 then -- 32-bit case C_LONG, C_HRESULT then -- 32-bit signed (#01000008) lg += 4 case C_ULONG, C_SIZE_T then -- 32-bit unsigned (#02000008) lg += 4 case C_POINTER, C_HANDLE, C_HWND, C_LPARAM, C_WPARAM then -- 32-bit pointer (#03000001) lg += 4 elsifdef BITS64 then -- 64-bit case C_LONG, C_HRESULT then -- 64-bit signed (#01000008) lg += 8 case C_ULONG, C_SIZE_T then -- 64-bit unsigned (#02000008) lg += 8 case C_POINTER, C_HANDLE, C_HWND, C_LPARAM, C_WPARAM then -- 64-bit pointer (#03000001) lg += 8 end ifdef end ifdef
In my case, Eu 4.1 on x86-64, the interpreter should see
case C_BOOL, C_INT then -- 32-bit signed (#01000004) lg += 4 case C_DWORD, C_UINT then -- 32-bit unsigned (#02000004) lg += 4 case C_DWORDLONG, C_LONGLONG then -- 64-bit integer (#03000002) lg += 8 case C_LONG, C_HRESULT then -- 64-bit signed (#01000008) lg += 8 case C_ULONG, C_SIZE_T then -- 64-bit unsigned (#02000008) lg += 8 case C_POINTER, C_HANDLE, C_HWND, C_LPARAM, C_WPARAM then -- 64-bit pointer (#03000001) lg += 8
Do I have to understand that on a 64-bit system, both BITS32 and BITS64 are defined ?
Jean-Marc
