not.pass.cpp revision bc8d3f97eb5c958007f2713238472e0c1c8fe02c 
1//===----------------------------------------------------------------------===//
2//
3// ��������������������The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <ios>
11
12// template <class charT, class traits> class basic_ios
13
14// bool operator!() const;
15
16#include <ios>
17#include <cassert>
18
19int main()
20{
21    std::ios ios(0);
22    assert(!ios == ios.fail());
23    ios.setstate(std::ios::failbit);
24    assert(!ios == ios.fail());
25}
26