//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03
// <iterator>
// class istream_iterator
// constexpr istream_iterator();
#include <iterator>
#include <cassert>
#include "test_macros.h"
struct S { S(); }; // not constexpr
int main(int, char**)
{
constexpr std::istream_iterator<S> it;
return 0;
}