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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
// operator unspecified-bool-type() const;
#include <ios>
#include <type_traits>
#include <cassert>
#include "test_macros.h"
int main(int, char**)
{
std::ios ios(0);
assert(static_cast<bool>(ios) == !ios.fail());
ios.setstate(std::ios::failbit);
assert(static_cast<bool>(ios) == !ios.fail());
static_assert((!std::is_convertible<std::ios, int>::value), "");
static_assert((!std::is_convertible<std::ios const&, int>::value), "");
#if TEST_STD_VER >= 11
static_assert(!std::is_convertible<std::ios, void*>::value, "");
static_assert(!std::is_convertible<std::ios, bool>::value, "");
#else
static_assert(std::is_convertible<std::ios, void*>::value, "");
static_assert(std::is_convertible<std::ios, bool>::value, "");
(void)(ios == 0); // SPEC2006 apparently relies on this to compile
#endif
return 0;
}
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