1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// UNSUPPORTED: c++03
10
11// <iterator>
12
13// class istream_iterator
14
15// constexpr istream_iterator();
16
17#include <iterator>
18#include <cassert>
19
20#include "test_macros.h"
21
22struct S { S(); }; // not constexpr
23
24int main(int, char**)
25{
26 constexpr std::istream_iterator<S> it;
27
28 return 0;
29}
30

source code of libcxx/test/std/iterators/stream.iterators/istream.iterator/istream.iterator.cons/default.compile.fail.cpp