text: //===----------------------------------------------------------------------===//
  //
  // 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, c++11, c++14, c++17
  
  // template<class I>
  //   concept permutable = see below; // Since C++20
  
  #include <iterator>
  
  template<class I> void test_subsumption() requires std::forward_iterator<I>;
  template<class I> void test_subsumption() requires std::indirectly_movable_storable<I, I>;
  template<class I> void test_subsumption() requires std::indirectly_swappable<I, I>;
  template<class I> constexpr bool test_subsumption() requires std::permutable<I> { return true; }
  static_assert(test_subsumption<int*>());
  