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 // <sstream>
11 
12 // template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
13 // class basic_stringbuf
14 
15 // explicit basic_stringbuf(ios_base::openmode which = ios_base::in | ios_base::out);
16 
17 #include <sstream>
18 #include <cassert>
19 
20 template<typename CharT>
21 struct testbuf
22     : std::basic_stringbuf<CharT>
23 {
checktestbuf24     void check()
25     {
26         assert(this->eback() == NULL);
27         assert(this->gptr() == NULL);
28         assert(this->egptr() == NULL);
29         assert(this->pbase() == NULL);
30         assert(this->pptr() == NULL);
31         assert(this->epptr() == NULL);
32     }
33 };
34 
main()35 int main()
36 {
37     {
38         std::stringbuf buf;
39         assert(buf.str() == "");
40     }
41     {
42         std::wstringbuf buf;
43         assert(buf.str() == L"");
44     }
45     {
46         testbuf<char> buf;
47         buf.check();
48     }
49     {
50         testbuf<wchar_t> buf;
51         buf.check();
52     }
53 }
54