prog.cpp:3: error: ‘Zlib_init::Zlib_init()’ is private
prog.cpp:14: error: within this context
prog.cpp: In static member function ‘static void Zlib::__static_initialization_and_destruction_0(int, int)’:
prog.cpp:4: error: ‘Zlib_init::~Zlib_init()’ is private
prog.cpp:14: error: within this context