On Fri, Oct 23, 2015 at 3:56 AM, Laurent Renoux <lren...@ivory-tower.fr>
wrote:
> Thx for your answer.
>
>
>
> Sorry for my approximation, I only work under Windows. I use Visual 2012
> where size_t is defined as follow
>
>
Ok, thanks. Let me know if 'unsigned long long' doesn't work. It's
suboptimal for 32-bit, but I think compiler compatibility trumps that.
Someday I'll move the code into the 21st century.
Thanks,
John
>
>
>
>
> #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>
> 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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