1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // <sstream>
10 
11 // template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
12 // class basic_stringstream
13 
14 // explicit basic_stringstream(ios_base::openmode which = ios_base::out|ios_base::in);
15 
16 #include <sstream>
17 #include <cassert>
18 
19 int main(int, char**)
20 {
21     {
22         std::stringstream ss;
23         assert(ss.rdbuf() != 0);
24         assert(ss.good());
25         assert(ss.str() == "");
26     }
27     {
28         std::stringstream ss(std::ios_base::in);
29         assert(ss.rdbuf() != 0);
30         assert(ss.good());
31         assert(ss.str() == "");
32     }
33     {
34         std::wstringstream ss;
35         assert(ss.rdbuf() != 0);
36         assert(ss.good());
37         assert(ss.str() == L"");
38     }
39     {
40         std::wstringstream ss(std::ios_base::in);
41         assert(ss.rdbuf() != 0);
42         assert(ss.good());
43         assert(ss.str() == L"");
44     }
45 
46   return 0;
47 }
48