On Thu, Sep 3, 2015 at 8:03 AM, Laurent Renoux <lren...@ivory-tower.fr> wrote:
> Hi John, > > > > At first, i would like to tell you how big is your works : thanks for all. > > > > I use wxLua with wxWidget 3.0.2 since 1 year on x86 and x64 platforms on > Windows 7 with no matter. Since I have jumped on Windows 10, wxLua crash on > x64. Same dll, same code. I think, I have found the problem. > > > > In file wxlstate.cpp In function > > > > void* LUACALL wxluaT_getuserdatatype(lua_State* L, int stack_idx, int > wxl_type) > > > > long int o = (long int)wxlua_touserdata(L, stack_idx, false); > > > > should be changed in > > > > size_t o = (size_t)wxlua_touserdata(L, stack_idx, false); > > > > on Windows platforms to avoid original pointer to be truncated in 32 bits. > Why it doesn’t crash since 1 year on Win7, I really don’t know, probably > I’m a lucky man and memory management has changed on Win10 ! > > > Humm, my understanding was that both long and size_t are 4 bytes on a 32-bit architecture and 8 bytes on a 64-bit architecture, but I see now that there are claims that Visual Studio kept long at 4 bytes on x64. It seems like there is no guarantees about size_t other than that it will be unsigned in the C++ standard. Can you please print sizeof(long) and sizeof(size_t) and let me know what compiler you use? I should use an uintptr_t, but older Visual Studio versions don't have inttypes.h so I've changed it to 'unsigned long long' so it'll work everywhere. The change is committed to svn. Regards, John
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