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 // <iomanip>
10 
11 // T1 resetiosflags(ios_base::fmtflags mask);
12 
13 #include <iomanip>
14 #include <istream>
15 #include <ostream>
16 #include <cassert>
17 
18 #include "test_macros.h"
19 
20 template <class CharT>
21 struct testbuf
22     : public std::basic_streambuf<CharT>
23 {
testbuftestbuf24     testbuf() {}
25 };
26 
main(int,char **)27 int main(int, char**)
28 {
29     {
30         testbuf<char> sb;
31         std::istream is(&sb);
32         assert(is.flags() & std::ios_base::skipws);
33         is >> std::resetiosflags(std::ios_base::skipws);
34         assert(!(is.flags() & std::ios_base::skipws));
35     }
36     {
37         testbuf<char> sb;
38         std::ostream os(&sb);
39         assert(os.flags() & std::ios_base::skipws);
40         os << std::resetiosflags(std::ios_base::skipws);
41         assert(!(os.flags() & std::ios_base::skipws));
42     }
43     {
44         testbuf<wchar_t> sb;
45         std::wistream is(&sb);
46         assert(is.flags() & std::ios_base::skipws);
47         is >> std::resetiosflags(std::ios_base::skipws);
48         assert(!(is.flags() & std::ios_base::skipws));
49     }
50     {
51         testbuf<wchar_t> sb;
52         std::wostream os(&sb);
53         assert(os.flags() & std::ios_base::skipws);
54         os << std::resetiosflags(std::ios_base::skipws);
55         assert(!(os.flags() & std::ios_base::skipws));
56     }
57 
58   return 0;
59 }
60