QtCreator doesn't find reference to a function

#include <iostream> 

using namespace std; 

class Test
{
    public: void test() 
    { 
        cout << "test" << endl; 
    }
}; 

auto f()
{ 
    return new Test();
} 

int main()
{
    auto p = f(); 
    p->test ();     // this reference to Test::test() is not detected
    return 0;
}