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: libcpp-has-no-incomplete-ranges
11 
12 // constexpr auto end()
13 //   requires (!simple-view<V>)
14 // constexpr auto end() const
15 //   requires range<const V>
16 
17 #include <ranges>
18 
19 #include "test_macros.h"
20 #include "types.h"
21 
22 constexpr bool test() {
23   // range<const V>
24   std::ranges::drop_view dropView1(MoveOnlyView(), 4);
25   assert(dropView1.end() == globalBuff + 8);
26 
27   // !simple-view<V>
28   std::ranges::drop_view dropView2(InputView(), 4);
29   assert(dropView2.end() == globalBuff + 8);
30 
31   // range<const V>
32   const std::ranges::drop_view dropView3(MoveOnlyView(), 0);
33   assert(dropView3.end() == globalBuff + 8);
34 
35   // !simple-view<V>
36   const std::ranges::drop_view dropView4(InputView(), 2);
37   assert(dropView4.end() == globalBuff + 8);
38 
39   // range<const V>
40   std::ranges::drop_view dropView5(MoveOnlyView(), 10);
41   assert(dropView5.end() == globalBuff + 8);
42 
43   return true;
44 }
45 
46 int main(int, char**) {
47   test();
48   static_assert(test());
49 
50   return 0;
51 }
52