#include <boost/filesystem/path.hpp>
#include <iostream>

struct c_struct
{
    int foo;
    int bar;
    char flexible_buf[1];
};

int main()
{
    c_struct *p = (c_struct *)malloc(1000);
    strcpy(p->flexible_buf, "a-long-string-disguised-as-char[1]");

    boost::filesystem::path path1(p->flexible_buf);
    std::cout << path1 << std::endl;

    boost::filesystem::path path2("base");
    path2 /= p->flexible_buf;
    std::cout << path2 << std::endl;
}