[Boost-users] Serialization newbie needs help

17 Aug 2007

      Hi all,

I just cannot understand why the following code fails
to compile. I have read the help files, did my Google,
stared at it for hours, etc. But I cannot make sense.
It compiles to the following message.

Any ideas will be appreciated,

--Hector C.

----MESSAGE----
    // if your program traps here, it indicates taht
your doing one of the following:
    // a) serializing an object of a type marked
"track_never" through a pointer.
    // b) saving an non-const object of a type not
markd "track_never)
    // Either of these conditions may be an indicator
of an error usage of the
    // serialization library and should be double
checked.  See documentation on
    // object tracking.
--END MESSAGE--

----CODE----
#include <iomanip>
#include <iostream>
#include <fstream>
#include <string>
#include <boost/archive/text_iarchive.hpp>
#include <boost/archive/text_oarchive.hpp>
#include <boost/serialization/base_object.hpp>
#include <boost/serialization/utility.hpp>
#include <boost/serialization/list.hpp>

using namespace std;

class A
{
public:
    string m;
    A(){};
private:
    friend class boost::serialization::access;
    template<class Archive>
    void serialize(Archive & ar, const unsigned int
version)
    {
        ar & m;
    }
};

int main(int argc, char * argv[])
{
    A a;
    {
        ofstream off("test.txt");
        boost::archive::text_oarchive oa(off);
        //Uncommenting any of the following lines
        //produces compilation errors
	//oa << a;
        //oa << (const A) a;
    }
    return 0;
}
---END CODE---

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