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, c++11, c++14, c++17
10 
11 // <iterator>
12 
13 // template<semiregular S>
14 //   class move_sentinel;
15 
16 #include <iterator>
17 
18 template<class T>
19 concept HasMoveSentinel = requires {
20   typename std::move_sentinel<T>;
21 };
22 
23 struct Semiregular {};
24 
25 struct NotSemiregular {
26   NotSemiregular(int);
27 };
28 
29 static_assert( HasMoveSentinel<int>);
30 static_assert( HasMoveSentinel<int*>);
31 static_assert( HasMoveSentinel<Semiregular>);
32 static_assert(!HasMoveSentinel<NotSemiregular>);
33