#include <boost/interprocess/managed_shared_memory.hpp>
typedef boost::interprocess::managed_shared_memory msm_t;

class Abcd { };

class Dummy
{
public:
    Dummy(Abcd& abcd);
};

Dummy* test()
{
    msm_t msm(boost::interprocess::open_or_create,"segname",1024);
    const char* abcd = "test";
    Abcd x;
    Dummy* d=msm.find_or_construct<Dummy >(abcd)(x);
    return d;
}