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 // <fstream>
11 
12 // template <class charT, class traits = char_traits<charT> >
13 // class basic_fstream
14 
15 // explicit basic_fstream(const char* s, ios_base::openmode mode = ios_base::in | ios_base::out);
16 
17 #include <fstream>
18 #include <cassert>
19 #include "platform_support.h"
20 
21 int main()
22 {
23     std::string temp = get_temp_file_name();
24     {
25         std::fstream fs(temp.c_str(), std::ios_base::in | std::ios_base::out
26                                                 | std::ios_base::trunc);
27         double x = 0;
28         fs << 3.25;
29         fs.seekg(0);
30         fs >> x;
31         assert(x == 3.25);
32     }
33     std::remove(temp.c_str());
34     {
35         std::wfstream fs(temp.c_str(), std::ios_base::in | std::ios_base::out
36                                                  | std::ios_base::trunc);
37         double x = 0;
38         fs << 3.25;
39         fs.seekg(0);
40         fs >> x;
41         assert(x == 3.25);
42     }
43     std::remove(temp.c_str());
44 }
45