c++ - Destructor and python -

i have base class in c++. export python using boost::python. virtual destructor? base class should have virtual destructor avoid wrong memory freeing, right? forget , wrote base without destructor. works, lot of memory leaks.

now i've added:

class base {    public:       virtual ~base();       // other members... }; 

and after importing of module in python error:

importerror: base.so: undefined symbol: _zti6base

what i'm doing wrong? and, understand, error causes due missing destructor exporter py-module.

the missing symbol error caused failing define destructor (you're declaring destructor, it's unclear question whether you're defining it):

class base {    public:       virtual ~base() {}       // other members... }; 

(note added curly braces)

as question whether every "base class should have virtual destructor avoid wrong memory freeing", please take @ faq: http://www.parashift.com/c++-faq-lite/virtual-functions.html#faq-20.7