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 // <ios>
11 
12 // template <class charT, class traits> class basic_ios
13 
14 // iostate exceptions() const;
15 
16 #include <ios>
17 #include <streambuf>
18 #include <cassert>
19 
20 struct testbuf : public std::streambuf {};
21 
main()22 int main()
23 {
24     {
25         std::ios ios(0);
26         assert(ios.exceptions() == std::ios::goodbit);
27         ios.exceptions(std::ios::eofbit);
28         assert(ios.exceptions() == std::ios::eofbit);
29         try
30         {
31             ios.exceptions(std::ios::badbit);
32             assert(false);
33         }
34         catch (std::ios::failure&)
35         {
36         }
37         assert(ios.exceptions() == std::ios::badbit);
38     }
39     {
40         testbuf sb;
41         std::ios ios(&sb);
42         assert(ios.exceptions() == std::ios::goodbit);
43         ios.exceptions(std::ios::eofbit);
44         assert(ios.exceptions() == std::ios::eofbit);
45         ios.exceptions(std::ios::badbit);
46         assert(ios.exceptions() == std::ios::badbit);
47     }
48 }
49