1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // UNSUPPORTED: c++03, c++11, c++14, c++17
10 // UNSUPPORTED: no-filesystem
11 // UNSUPPORTED: availability-filesystem-missing
12 
13 // <filesystem>
14 
15 // template <>
16 // inline constexpr bool ranges::enable_view<filesystem::directory_iterator> = true;
17 // template <>
18 // inline constexpr bool ranges::enable_view<filesystem::recursive_directory_iterator> = true;
19 
20 #include <filesystem>
21 #include <ranges>
22 
23 template<class Range>
test()24 void test() {
25   static_assert(std::ranges::enable_view<Range>);
26   static_assert(!std::ranges::enable_view<Range&>);
27   static_assert(!std::ranges::enable_view<const Range>);
28 }
29 
test()30 void test() {
31   test<std::filesystem::directory_iterator>();
32   test<std::filesystem::recursive_directory_iterator>();
33 }
34