Re: [luabind] program works for 32bit but not for 64.

[Stephen B. - A. E. <sbl...@ra...>]

Hi Nigel,

 

I'll look into the luaL_dostring() return today. Assuming that you are
correct and no overload was found, what then?

 

The size of size_t is 8 bytes on a 64bit system.

 

Thanks,

Steve

 

________________________________

From: Nigel Atkinson [mailto:ni...@at...] 
Sent: Wednesday, October 12, 2011 6:36 PM
To: lua...@li...
Subject: Re: [luabind] program works for 32bit but not for 64.

 

It might be useful to check the return value of luaL_dostring and if
it's not zero, print out the string at the top of the stack.  My guess
is that it will say something along the lines of no overload found.

 

What's the size of size_t on Win64? long? long long?

 

Nigel Atkinson

 

On 13/10/2011, at 8:27 AM, Stephen Blackwell - Applications Engineering
wrote:





Below is a test-program I have been using.

 

I'm compiling in Visual Studio 2008 on a 64 bit Windows 7 box and I have
5.1.4 of lua. Luabind seems to be 0.9.1.

 

When I compile for a 64 bit platform and I typedef MY_TYPE to int, the
program works. If I typedef it to size_t, greet never gets called

When I compile for a 32 bit platform both cases work. (obviously since
int and size_t are then the same size)

 

Does anyone have any suggestions for 64bit?

 

Thanks,

Steve

 

#include <iostream>

#include <luabind/luabind.hpp>

using namespace std;

 

// int works, size_t doesn't.

typedef size_t MY_TYPE;

 

class NP {

public:

      NP(MY_TYPE number) : m_number(number) {}

 

      MY_TYPE greet(string& s, string& t)

      {

            cout << s << m_number << t << endl;

            return m_number;

      }

private:

      MY_TYPE m_number;

};

 

int main()

{

      using namespace luabind;

 

      lua_State *myLuaState = lua_open();

 

      open(myLuaState);

 

      module(myLuaState)

      [

            class_<NP>("NumberPrinter")

            .def(constructor<MY_TYPE>())

            .def("greet", &NP::greet)

 

      ];

 

      luaL_dostring(myLuaState,

            "Print2000 = NumberPrinter(2000)\n"

            "Print2000:greet(\"Hello \", \" world!\")\n"

            );

 

      std::cout << "sizeof(LUA_INTEGER) = " << sizeof(LUA_INTEGER) <<
std::endl;

      std::cout << "sizeof(int) = " << sizeof(int) << std::endl;

      std::cout << "sizeof(long) = " << sizeof(long) << std::endl;

 

      lua_close(myLuaState);

 

      return 0;

}




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