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 // UNSUPPORTED: libcpp-no-concepts
11 
12 // template<class I>
13 //   concept permutable = see below; // Since C++20
14 
15 #include <iterator>
16 
17 template<class I> void test_subsumption() requires std::forward_iterator<I>;
18 template<class I> void test_subsumption() requires std::indirectly_movable_storable<I, I>;
19 template<class I> void test_subsumption() requires std::indirectly_swappable<I, I>;
20 template<class I> constexpr bool test_subsumption() requires std::permutable<I> { return true; }
21 static_assert(test_subsumption<int*>());
22