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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
// template <class _Tp>
// inline constexpr empty_view<_Tp> empty{};
#include <ranges>
#include <cassert>
#include "test_macros.h"
template <class T>
constexpr void testType() {
ASSERT_SAME_TYPE(decltype(std::views::empty<T>), const std::ranges::empty_view<T>);
ASSERT_SAME_TYPE(decltype((std::views::empty<T>)), const std::ranges::empty_view<T>&);
auto v = std::views::empty<T>;
assert(std::ranges::empty(v));
}
struct Empty {};
struct BigType {
char buff[8];
};
constexpr bool test() {
testType<int>();
testType<const int>();
testType<int*>();
testType<Empty>();
testType<const Empty>();
testType<BigType>();
return true;
}
int main(int, char**) {
test();
static_assert(test());
return 0;
}
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