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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <ios>
// template <class charT, class traits> class basic_ios
// bool fail() const;
#include <ios>
#include <streambuf>
#include <cassert>
struct testbuf : public std::streambuf {};
int main()
{
{
std::ios ios(0);
assert(ios.fail());
ios.setstate(std::ios::eofbit);
assert(ios.fail());
}
{
testbuf sb;
std::ios ios(&sb);
assert(!ios.fail());
ios.setstate(std::ios::eofbit);
assert(!ios.fail());
ios.setstate(std::ios::badbit);
assert(ios.fail());
ios.setstate(std::ios::failbit);
assert(ios.fail());
}
}
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