67     std::function<int(int)> f1 = A(1);  in main()  local
70     static_assert(noexcept(swap(f1, f2)), "" );  in main()
74     RTTI_ASSERT(f1.target<A>()->id() == 1);  in main()
76     swap(f1, f2);  in main()
79     RTTI_ASSERT(f1.target<A>()->id() == 2);  in main()
85     std::function<int(int)> f1 = A(1);  in main()  local
88     static_assert(noexcept(swap(f1, f2)), "" );  in main()
92     RTTI_ASSERT(f1.target<A>()->id() == 1);  in main()
94     swap(f1, f2);  in main()
97     RTTI_ASSERT(*f1.target<int(*)(int)>() == g);  in main()
103     std::function<int(int)> f1 = g;  in main()  local
106     static_assert(noexcept(swap(f1, f2)), "" );  in main()
110     RTTI_ASSERT(*f1.target<int(*)(int)>() == g);  in main()
112     swap(f1, f2);  in main()
115     RTTI_ASSERT(f1.target<A>()->id() == 1);  in main()
121     std::function<int(int)> f1 = g;  in main()  local
124     static_assert(noexcept(swap(f1, f2)), "" );  in main()
128     RTTI_ASSERT(*f1.target<int(*)(int)>() == g);  in main()
130     swap(f1, f2);  in main()
133     RTTI_ASSERT(*f1.target<int(*)(int)>() == h);  in main()