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_ifstream
14
15// void open(const wchar_t* s, ios_base::openmode mode = ios_base::in);
16
17#include <fstream>
18#include <cassert>
19
20int main()
21{
22#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR
23    {
24        std::ifstream fs;
25        assert(!fs.is_open());
26        char c = 'a';
27        fs >> c;
28        assert(fs.fail());
29        assert(c == 'a');
30        fs.open(L"test.dat");
31        assert(fs.is_open());
32        fs >> c;
33        assert(c == 'r');
34    }
35    {
36        std::wifstream fs;
37        assert(!fs.is_open());
38        wchar_t c = L'a';
39        fs >> c;
40        assert(fs.fail());
41        assert(c == L'a');
42        fs.open(L"test.dat");
43        assert(fs.is_open());
44        fs >> c;
45        assert(c == L'r');
46    }
47#endif
48}
49