//===----------------------------------------------------------------------===//
//
// 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 T>
// concept bidirectional_iterator;
#include <iterator>
#include <concepts>
template<std::forward_iterator I>
constexpr bool check_subsumption() {
return false;
}
template<std::bidirectional_iterator>
constexpr bool check_subsumption() {
return true;
}
static_assert(check_subsumption<int*>());