1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 // UNSUPPORTED: c++98, c++03, c++11, c++14, c++17
10 // XFAIL: *
11 
12 // <chrono>
13 // class month;
14 
15 // template<class charT, class traits>
16 //   basic_ostream<charT, traits>&
17 //   operator<<(basic_ostream<charT, traits>& os, const month& m);
18 //
19 //   Effects: If m.ok() == true inserts format(os.getloc(), fmt, m) where fmt is "%b" widened to charT.
20 //   Otherwise inserts int{m} << " is not a valid month".
21 //
22 // template<class charT, class traits>
23 //   basic_ostream<charT, traits>&
24 //   to_stream(basic_ostream<charT, traits>& os, const charT* fmt, const month& m);
25 //
26 //   Effects: Streams m into os using the format specified by the NTCTS fmt.
27 //   fmt encoding follows the rules specified in 25.11.
28 //
29 // template<class charT, class traits, class Alloc = allocator<charT>>
30 //   basic_istream<charT, traits>&
31 //   from_stream(basic_istream<charT, traits>& is, const charT* fmt,
32 //             month& m, basic_string<charT, traits, Alloc>* abbrev = nullptr,
33 //             minutes* offset = nullptr);
34 //
35 //   Effects: Attempts to parse the input stream is into the month m using the format flags
36 //   given in the NTCTS fmt as specified in 25.12. If the parse fails to decode a valid month,
37 //   is.setstate(ios_- base::failbit) shall be called and m shall not be modified.
38 //   If %Z is used and successfully parsed, that value will be assigned to *abbrev if
39 //   abbrev is non-null. If %z (or a modified variant) is used and successfully parsed,
40 //   that value will be assigned to *offset if offset is non-null.
41 
42 #include <chrono>
43 #include <type_traits>
44 #include <cassert>
45 #include <iostream>
46 
47 #include "test_macros.h"
48 
main()49 int main()
50 {
51    using month = std::chrono::month;
52    std::cout << month{1};
53 }
54