34         optional<int> opt;  in check_reset()  local
35         static_assert(noexcept(opt.reset()) == true, "");  in check_reset()
36         opt.reset();  in check_reset()
37         assert(static_cast<bool>(opt) == false);  in check_reset()
40         optional<int> opt(3);  in check_reset()  local
41         opt.reset();  in check_reset()
42         assert(static_cast<bool>(opt) == false);  in check_reset()
54         optional<X> opt;  in main()  local
55         static_assert(noexcept(opt.reset()) == true, "");  in main()
57         opt.reset();  in main()
59         assert(static_cast<bool>(opt) == false);  in main()
62         optional<X> opt(X{});  in main()  local
64         opt.reset();  in main()
66         assert(static_cast<bool>(opt) == false);  in main()