1 // { dg-options "-std=gnu++2a" }
2 // { dg-do compile { target c++2a } }
4 // Copyright (C) 2020-2023 Free Software Foundation, Inc.
6 // This file is part of the GNU ISO C++ Library. This library is free
7 // software; you can redistribute it and/or modify it under the
8 // terms of the GNU General Public License as published by the
9 // Free Software Foundation; either version 3, or (at your option)
12 // This library is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
17 // You should have received a copy of the GNU General Public License along
18 // with this library; see the file COPYING3. If not see
19 // <http://www.gnu.org/licenses/>.
24 // C++20 doesn't require this to be non-throwing.
25 static_assert( std::is_nothrow_constructible_v
<std::istream_iterator
<int>,
26 std::default_sentinel_t
> );
28 constexpr std::istream_iterator
<int> i
= std::default_sentinel
;
30 struct X
{ X() noexcept(false); };
31 std::istream
& operator<<(std::istream
&, X
&);
33 static_assert( std::is_constructible_v
<std::istream_iterator
<X
>,
34 std::default_sentinel_t
> );
35 static_assert( ! std::is_nothrow_constructible_v
<std::istream_iterator
<X
>,
36 std::default_sentinel_t
> );