#include <list>
#include <memory>
#include <utility>
#include <iostream>

using namespace std;

template <typename Base>
struct verbose_allocator : Base {
	verbose_allocator() {}
	template <typename U> verbose_allocator(const U&) {}

	template <typename U> struct rebind {
		typedef verbose_allocator<
			typename Base::template rebind<U>::other
		> other;
	};

	typename Base::pointer allocate(typename Base::size_type s) {
		cout << "allocated " << s << endl;
		return Base::allocate(s);
	}
};

int main() {
	typedef list<int, verbose_allocator<allocator<int> > > L;
	cout << "default ctor" << endl;
	L l;            // #1  Allocates sentinel node upon
	                //     default construction.
	cout << endl << "move ctor" << endl;
	L m = move(l);  // #2  And also upon move construction.
}