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      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 
     10 // <iomanip>
     11 
     12 // template <class charT> T10 put_time(const struct tm* tmb, const charT* fmt);
     13 
     14 #include <iomanip>
     15 #include <cassert>
     16 
     17 #include "platform_support.h" // locale name macros
     18 
     19 template <class CharT>
     20 class testbuf
     21     : public std::basic_streambuf<CharT>
     22 {
     23     typedef std::basic_streambuf<CharT> base;
     24     std::basic_string<CharT> str_;
     25 public:
     26     testbuf()
     27     {
     28     }
     29 
     30     std::basic_string<CharT> str() const
     31         {return std::basic_string<CharT>(base::pbase(), base::pptr());}
     32 
     33 protected:
     34 
     35     virtual typename base::int_type
     36         overflow(typename base::int_type __c = base::traits_type::eof())
     37         {
     38             if (__c != base::traits_type::eof())
     39             {
     40                 int n = str_.size();
     41                 str_.push_back(__c);
     42                 str_.resize(str_.capacity());
     43                 base::setp(const_cast<CharT*>(str_.data()),
     44                            const_cast<CharT*>(str_.data() + str_.size()));
     45                 base::pbump(n+1);
     46             }
     47             return __c;
     48         }
     49 };
     50 
     51 int main()
     52 {
     53     {
     54         testbuf<char> sb;
     55         std::ostream os(&sb);
     56         os.imbue(std::locale(LOCALE_en_US_UTF_8));
     57         std::tm t = {0};
     58         t.tm_sec = 59;
     59         t.tm_min = 55;
     60         t.tm_hour = 23;
     61         t.tm_mday = 31;
     62         t.tm_mon = 11;
     63         t.tm_year = 161;
     64         t.tm_wday = 6;
     65         os << std::put_time(&t, "%c");
     66         assert(sb.str() == "Sat Dec 31 23:55:59 2061");
     67     }
     68     {
     69         testbuf<wchar_t> sb;
     70         std::wostream os(&sb);
     71         os.imbue(std::locale(LOCALE_en_US_UTF_8));
     72         std::tm t = {0};
     73         t.tm_sec = 59;
     74         t.tm_min = 55;
     75         t.tm_hour = 23;
     76         t.tm_mday = 31;
     77         t.tm_mon = 11;
     78         t.tm_year = 161;
     79         t.tm_wday = 6;
     80         os << std::put_time(&t, L"%c");
     81         assert(sb.str() == L"Sat Dec 31 23:55:59 2061");
     82     }
     83 }
     84