23     assert(std::stoul("0") == 0);  in main()
24     assert(std::stoul(L"0") == 0);  in main()
25     assert(std::stoul("-0") == 0);  in main()
26     assert(std::stoul(L"-0") == 0);  in main()
27     assert(std::stoul(" 10") == 10);  in main()
28     assert(std::stoul(L" 10") == 10);  in main()
30     assert(std::stoul("10g", &idx, 16) == 16);  in main()
33     assert(std::stoul(L"10g", &idx, 16) == 16);  in main()
38         std::stoul("", &idx);  in main()
47         std::stoul(L"", &idx);  in main()
56         std::stoul("  - 8", &idx);  in main()
65         std::stoul(L"  - 8", &idx);  in main()
74         std::stoul("a1", &idx);  in main()
83         std::stoul(L"a1", &idx);  in main()
93         std::stoul("9999999999999999999999999999999999999999999999999", &idx);  in main()
102         std::stoul(L"9999999999999999999999999999999999999999999999999", &idx);  in main()