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//===----------------------------------------------------------------------===//
//
// 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+=(difference_type n);
#include <cassert>
#include <concepts>
#include <memory>
#include <ranges>
constexpr bool test() {
std::ranges::repeat_view<int> v(10);
using Iter = std::ranges::iterator_t<std::ranges::repeat_view<int>>;
auto iter1 = v.begin() + 10;
auto iter2 = v.begin() + 10;
assert(iter1 == iter2);
iter1 += 5;
assert(iter1 != iter2);
assert(iter1 == iter2 + 5);
static_assert(std::same_as<decltype(iter2 += 5), Iter&>);
assert(std::addressof(iter2) == std::addressof(iter2 += 5));
return true;
}
int main(int, char**) {
test();
static_assert(test());
return 0;
}
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