24     E e1;  in test1()  local
25     e1();  in test1()
26     E e2 = e1;  in test1()
27     assert(e1 == e2);  in test1()
28     assert(e1() == e2());  in test1()
29     E::result_type k = e1();  in test1()
30     assert(e1 != e2);  in test1()
32     assert(e1 == e2);  in test1()
39     E e1;  in test2()  local
40     e1();  in test2()
41     E e2 = e1;  in test2()
42     assert(e1 == e2);  in test2()
43     assert(e1() == e2());  in test2()
44     E::result_type k = e1();  in test2()
45     assert(e1 != e2);  in test2()
47     assert(e1 == e2);  in test2()