blob: ef534f6d0adf101fe815da98444e8ad57df5b034 [file] [log] [blame]
//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <ios>
// template <class charT, class traits> class basic_ios
// bool operator!() const;
#include <ios>
#include <cassert>
int main()
{
std::ios ios(0);
assert(!ios == ios.fail());
ios.setstate(std::ios::failbit);
assert(!ios == ios.fail());
}