30     static_assert( noexcept(std::span<int>   ().empty()), "");  in main()
31     static_assert( noexcept(std::span<int, 0>().empty()), "");  in main()
34     static_assert( std::span<int>().empty(),            "");  in main()
35     static_assert( std::span<long>().empty(),           "");  in main()
36     static_assert( std::span<double>().empty(),         "");  in main()
37     static_assert( std::span<A>().empty(),              "");  in main()
38     static_assert( std::span<std::string>().empty(),    "");  in main()
40     static_assert( std::span<int, 0>().empty(),         "");  in main()
41     static_assert( std::span<long, 0>().empty(),        "");  in main()
42     static_assert( std::span<double, 0>().empty(),      "");  in main()
43     static_assert( std::span<A, 0>().empty(),           "");  in main()
44     static_assert( std::span<std::string, 0>().empty(), "");  in main()
46     static_assert(!std::span<const int>(iArr1, 1).empty(), "");  in main()
47     static_assert(!std::span<const int>(iArr1, 2).empty(), "");  in main()
48     static_assert(!std::span<const int>(iArr1, 3).empty(), "");  in main()
49     static_assert(!std::span<const int>(iArr1, 4).empty(), "");  in main()
50     static_assert(!std::span<const int>(iArr1, 5).empty(), "");  in main()
52     assert( (std::span<int>().empty()           ));  in main()
53     assert( (std::span<long>().empty()          ));  in main()
54     assert( (std::span<double>().empty()        ));  in main()
55     assert( (std::span<A>().empty()             ));  in main()
56     assert( (std::span<std::string>().empty()   ));  in main()
58     assert( (std::span<int, 0>().empty()        ));  in main()
59     assert( (std::span<long, 0>().empty()       ));  in main()
60     assert( (std::span<double, 0>().empty()     ));  in main()
61     assert( (std::span<A, 0>().empty()          ));  in main()
62     assert( (std::span<std::string, 0>().empty()));  in main()
64     assert(!(std::span<int, 1>(iArr2, 1).empty()));  in main()
65     assert(!(std::span<int, 2>(iArr2, 2).empty()));  in main()
66     assert(!(std::span<int, 3>(iArr2, 3).empty()));  in main()
67     assert(!(std::span<int, 4>(iArr2, 4).empty()));  in main()
68     assert(!(std::span<int, 5>(iArr2, 5).empty()));  in main()
71     assert( ((std::span<std::string>(&s, (std::ptrdiff_t) 0)).empty()));  in main()
72     assert(!((std::span<std::string>(&s, 1).empty())));  in main()