#include <iostream>
#include <memory>

class Foo
{
	public:
		Foo()
			: bar(std::make_unique<int>(new int(12)))
		{
		}

	private:
		std::unique_ptr<int> bar;
};

int main()
{
	Foo();
}

Ich bekomme diese Fehlermeldung:

In file included from /usr/include/c++/5.3.0/memory:81:0,
                 from main.cpp:2:
/usr/include/c++/5.3.0/bits/unique_ptr.h: In instantiation of ‘typename std::_MakeUniq<_Tp>::__single_object std::make_unique(_Args&& ...) [with _Tp = int; _Args = {int*}; typename std::_MakeUniq<_Tp>::__single_object = std::unique_ptr<int>]’:
main.cpp:8:43:   required from here
/usr/include/c++/5.3.0/bits/unique_ptr.h:765:69: error: invalid conversion from ‘int*’ to ‘int’ [-fpermissive]
     { return unique_ptr<_Tp>(new _Tp(std::forward<_Args>(__args)...)); }
                                                                     ^