68     std::function<int(int)> f2 = A(2);  in main()  local
70     static_assert(noexcept(swap(f1, f2)), "" );  in main()
75     RTTI_ASSERT(f2.target<A>()->id() == 2);  in main()
76     swap(f1, f2);  in main()
80     RTTI_ASSERT(f2.target<A>()->id() == 1);  in main()
86     std::function<int(int)> f2 = g;  in main()  local
88     static_assert(noexcept(swap(f1, f2)), "" );  in main()
93     RTTI_ASSERT(*f2.target<int(*)(int)>() == g);  in main()
94     swap(f1, f2);  in main()
98     RTTI_ASSERT(f2.target<A>()->id() == 1);  in main()
104     std::function<int(int)> f2 = A(1);  in main()  local
106     static_assert(noexcept(swap(f1, f2)), "" );  in main()
111     RTTI_ASSERT(f2.target<A>()->id() == 1);  in main()
112     swap(f1, f2);  in main()
116     RTTI_ASSERT(*f2.target<int(*)(int)>() == g);  in main()
122     std::function<int(int)> f2 = h;  in main()  local
124     static_assert(noexcept(swap(f1, f2)), "" );  in main()
129     RTTI_ASSERT(*f2.target<int(*)(int)>() == h);  in main()
130     swap(f1, f2);  in main()
134     RTTI_ASSERT(*f2.target<int(*)(int)>() == g);  in main()