//===----------------------------------------------------------------------===//
//
// 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, c++20
// constexpr iterator& operator--();
// constexpr iterator operator--(int);
#include <ranges>
#include <cassert>
constexpr bool test() {
using Iter = std::ranges::iterator_t<std::ranges::repeat_view<int>>;
std::ranges::repeat_view<int> rv(10);
auto iter = rv.begin() + 10;
assert(iter-- == rv.begin() + 10);
assert(--iter == rv.begin() + 8);
static_assert(std::same_as<decltype(iter--), Iter>);
static_assert(std::same_as<decltype(--iter), Iter&>);
return true;
}
int main(int, char**) {
test();
static_assert(test());
return 0;
}