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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 // <streambuf>
     11 
     12 // template <class charT, class traits = char_traits<charT> >
     13 // class basic_streambuf;
     14 
     15 // basic_streambuf& operator=(const basic_streambuf& rhs);
     16 
     17 #include <streambuf>
     18 #include <cassert>
     19 
     20 #include "platform_support.h" // locale name macros
     21 
     22 template <class CharT>
     23 struct test
     24     : public std::basic_streambuf<CharT>
     25 {
     26     typedef std::basic_streambuf<CharT> base;
     27     test() {}
     28 
     29     test& operator=(const test& t)
     30     {
     31         base::operator=(t);
     32         assert(this->eback() == t.eback());
     33         assert(this->gptr()  == t.gptr());
     34         assert(this->egptr() == t.egptr());
     35         assert(this->pbase() == t.pbase());
     36         assert(this->pptr()  == t.pptr());
     37         assert(this->epptr() == t.epptr());
     38         assert(this->getloc() == t.getloc());
     39         return *this;
     40     }
     41 
     42     void setg(CharT* gbeg, CharT* gnext, CharT* gend)
     43     {
     44         base::setg(gbeg, gnext, gend);
     45     }
     46     void setp(CharT* pbeg, CharT* pend)
     47     {
     48         base::setp(pbeg, pend);
     49     }
     50 };
     51 
     52 int main()
     53 {
     54     {
     55         test<char> t;
     56         test<char> t2;
     57         t2 = t;
     58     }
     59     {
     60         test<wchar_t> t;
     61         test<wchar_t> t2;
     62         t2 = t;
     63     }
     64     {
     65         char g1, g2, g3, p1, p3;
     66         test<char> t;
     67         t.setg(&g1, &g2, &g3);
     68         t.setp(&p1, &p3);
     69         test<char> t2;
     70         t2 = t;
     71     }
     72     {
     73         wchar_t g1, g2, g3, p1, p3;
     74         test<wchar_t> t;
     75         t.setg(&g1, &g2, &g3);
     76         t.setp(&p1, &p3);
     77         test<wchar_t> t2;
     78         t2 = t;
     79     }
     80     std::locale::global(std::locale(LOCALE_en_US_UTF_8));
     81     {
     82         test<char> t;
     83         test<char> t2;
     84         t2 = t;
     85     }
     86     {
     87         test<wchar_t> t;
     88         test<wchar_t> t2;
     89         t2 = t;
     90     }
     91 }
     92