QT show "RTTI symbol not found for class" bub work fine

I test shared_ptr and lambda deleter as follow code. It's work fine. but when debug it, showing:

RTTI symbol not found for class 'std::_Sp_counted_deleter<cls*, main::{lambda(cls*)#1}, std::allocator<void>, (__gnu_cxx::_Lock_policy)2>'

any problem with my code?

code:

#include <iostream>
#include <memory>
using namespace std;

class cls{
public:
    void test(){
        cout << "ok\n";
    }

    virtual ~cls(){
       cout << "~cls()\n";
    }
};

typedef shared_ptr<cls> stptr;

int main(){
    auto del = [](cls* p){delete(p);};
    stptr p = stptr(new cls, del);
    p->test();
    return 0;
}

screen shot: