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-no-concepts
11 // UNSUPPORTED: gcc-10
12 
13 // template<class In, class Out>
14 // concept indirectly_movable;
15 
16 #include <iterator>
17 
18 #include "test_macros.h"
19 
20 struct IndirectlyMovableWithInt {
21   int& operator*() const;
22 };
23 
24 struct Empty {};
25 
26 struct MoveOnly {
27   MoveOnly(MoveOnly&&) = default;
28   MoveOnly(MoveOnly const&) = delete;
29   MoveOnly& operator=(MoveOnly&&) = default;
30   MoveOnly& operator=(MoveOnly const&) = delete;
31   MoveOnly() = default;
32 };
33 
34 template<class T>
35 struct PointerTo {
36   using value_type = T;
37   T& operator*() const;
38 };
39 
40 static_assert( std::indirectly_movable<int*, int*>);
41 static_assert( std::indirectly_movable<const int*, int *>);
42 static_assert(!std::indirectly_movable<int*, const int *>);
43 static_assert(!std::indirectly_movable<const int*, const int *>);
44 static_assert( std::indirectly_movable<int*, int[2]>);
45 static_assert(!std::indirectly_movable<int[2], int*>);
46 static_assert(!std::indirectly_movable<int[2], int[2]>);
47 static_assert(!std::indirectly_movable<int(&)[2], int(&)[2]>);
48 static_assert(!std::indirectly_movable<int, int*>);
49 static_assert(!std::indirectly_movable<int, int>);
50 static_assert( std::indirectly_movable<Empty*, Empty*>);
51 static_assert( std::indirectly_movable<int*, IndirectlyMovableWithInt>);
52 static_assert(!std::indirectly_movable<Empty*, IndirectlyMovableWithInt>);
53 static_assert( std::indirectly_movable<int*, IndirectlyMovableWithInt>);
54 static_assert( std::indirectly_movable<MoveOnly*, MoveOnly*>);
55 static_assert(!std::indirectly_movable<MoveOnly*, const MoveOnly*>);
56 static_assert(!std::indirectly_movable<const MoveOnly*, const MoveOnly*>);
57 static_assert(!std::indirectly_movable<const MoveOnly*, MoveOnly*>);
58 static_assert( std::indirectly_movable<PointerTo<MoveOnly>, PointerTo<MoveOnly>>);
59 static_assert( std::indirectly_movable<MoveOnly*, PointerTo<MoveOnly>>);
60