Thx for your answer. Sorry for my approximation, I only work under Windows. I use Visual 2012 where size_t is defined as follow
#ifndef _SIZE_T_DEFINED #ifdef _WIN64 typedef unsigned __int64 size_t; #else typedef _W64 unsigned int size_t; #endif #define _SIZE_T_DEFINED #endif In x64 sizeof(long) = 4 sizeof(long long) = 8 sizeof(size_t) = 8 In x86 sizeof(long) = 4 sizeof(long long) = 4 sizeof(size_t) = 4 Regards, Laurent De : John Labenski [mailto:jlaben...@gmail.com] Envoyé : vendredi 23 octobre 2015 05:13 À : wxlua-users@lists.sourceforge.net Objet : Re: [wxlua-users] wxLua x64 On Thu, Sep 3, 2015 at 8:03 AM, Laurent Renoux <lren...@ivory-tower.fr<mailto: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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