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//===----------------------------------------------------------------------===//
//
// 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
// operator unspecified-bool-type() const;
#include <ios>
#include <cassert>
int main()
{
std::ios ios(0);
assert(static_cast<bool>(ios) == !ios.fail());
ios.setstate(std::ios::failbit);
assert(static_cast<bool>(ios) == !ios.fail());
}
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