Error(s):

source_file.cpp: In function ‘std::shared_ptr<int> getInt1()’:
source_file.cpp:14:12: error: cannot bind ‘std::unique_ptr<int, std::default_delete<int> >’ lvalue to ‘std::unique_ptr<int, std::default_delete<int> >&&’
     return i;
            ^
In file included from /usr/include/c++/4.9/memory:82:0,
                 from source_file.cpp:4:
/usr/include/c++/4.9/bits/shared_ptr.h:257:2: note: initializing argument 1 of ‘std::shared_ptr<_Tp>::shared_ptr(std::unique_ptr<_Up, _Ep>&&) [with _Tp1 = int; _Del = std::default_delete<int>; _Tp = int]’
  shared_ptr(std::unique_ptr<_Tp1, _Del>&& __r)
  ^
source_file.cpp:15:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^