fail.pass.cpp revision b64f8b07c104c6cc986570ac8ee0ed16a9f23976 
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// bool fail() const;
15
16#include <ios>
17#include <streambuf>
18#include <cassert>
19
20struct testbuf : public std::streambuf {};
21
22int main()
23{
24    {
25        std::ios ios(0);
26        assert(ios.fail());
27        ios.setstate(std::ios::eofbit);
28        assert(ios.fail());
29    }
30    {
31        testbuf sb;
32        std::ios ios(&sb);
33        assert(!ios.fail());
34        ios.setstate(std::ios::eofbit);
35        assert(!ios.fail());
36        ios.setstate(std::ios::badbit);
37        assert(ios.fail());
38        ios.setstate(std::ios::failbit);
39        assert(ios.fail());
40    }
41}
42