44     wchar_t* ws = 0;  in main()  local
47     static_assert((std::is_same<decltype(std::swprintf(ws, s, L"")), int>::value), "");  in main()
51     static_assert((std::is_same<decltype(std::vswprintf(ws, s, L"", va)), int>::value), "");  in main()
54     static_assert((std::is_same<decltype(std::fgetws(ws, 0, fp)), wchar_t*>::value), "");  in main()
68     static_assert((std::is_same<decltype(std::wcscpy(ws, L"")), wchar_t*>::value), "");  in main()
69     static_assert((std::is_same<decltype(std::wcsncpy(ws, L"", s)), wchar_t*>::value), "");  in main()
70     static_assert((std::is_same<decltype(std::wcscat(ws, L"")), wchar_t*>::value), "");  in main()
71     static_assert((std::is_same<decltype(std::wcsncat(ws, L"", s)), wchar_t*>::value), "");  in main()
75     static_assert((std::is_same<decltype(std::wcsxfrm(ws, L"", s)), std::size_t>::value), "");  in main()
87 …  static_assert((std::is_same<decltype(std::wcstok(ws, L"", (wchar_t**)0)), wchar_t*>::value), "");  in main()
91     static_assert((std::is_same<decltype(std::wmemcpy(ws, L"", s)), wchar_t*>::value), "");  in main()
92     static_assert((std::is_same<decltype(std::wmemmove(ws, L"", s)), wchar_t*>::value), "");  in main()
93     static_assert((std::is_same<decltype(std::wmemset(ws, L' ', s)), wchar_t*>::value), "");  in main()
94     static_assert((std::is_same<decltype(std::wcsftime(ws, s, L"", tm)), std::size_t>::value), "");  in main()
99     static_assert((std::is_same<decltype(std::mbrtowc(ws, "", s, &mb)), std::size_t>::value), "");  in main()
101 …static_assert((std::is_same<decltype(std::mbsrtowcs(ws, (const char**)0, s, &mb)), std::size_t>::v…  in main()