/* Check cf5-opt.vim defs.
VIM: let b:lcppflags="-std=c++11 -O2 -pthread"
*/

#include <memory>

class A 
{
    int i;
};

class B : public A
{
    int j;
};

int main()
{
    std::shared_ptr<A> a = std::make_shared<B>();

    std::shared_ptr<B> b = std::static_pointer_cast<B>(a);
}