1 //===----------------------------------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 // <memory>
11
12 // template <class OuterAlloc, class... InnerAllocs>
13 // class scoped_allocator_adaptor
14
15 // typedef see below is_always_equal;
16
17 #include <scoped_allocator>
18 #include <type_traits>
19
20 #include "allocators.h"
21 #include "min_allocator.h"
22
main()23 int main()
24 {
25 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
26
27 // sanity checks
28 static_assert( (std::is_same<
29 std::allocator_traits<A1<int>>::is_always_equal, std::false_type>::value
30 ), "" );
31
32 static_assert( (std::is_same<
33 std::allocator_traits<min_allocator<int>>::is_always_equal, std::true_type>::value
34 ), "" );
35
36 // wrapping one allocator
37 static_assert(
38 (std::is_same<
39 std::scoped_allocator_adaptor<A1<int>>::is_always_equal,
40 std::allocator_traits<A1<int>>::is_always_equal
41 >::value), "");
42
43 // wrapping one allocator
44 static_assert(
45 (std::is_same<
46 std::scoped_allocator_adaptor<min_allocator<int>>::is_always_equal,
47 std::allocator_traits<min_allocator<int>>::is_always_equal
48 >::value), "");
49
50 // wrapping two allocators (check the values instead of the types)
51 static_assert((
52 std::scoped_allocator_adaptor<A1<int>, A2<int>>::is_always_equal::value ==
53 ( std::allocator_traits<A1<int>>::is_always_equal::value &&
54 std::allocator_traits<A2<int>>::is_always_equal::value)
55 ), "");
56
57 // wrapping two allocators (check the values instead of the types)
58 static_assert((
59 std::scoped_allocator_adaptor<A1<int>, min_allocator<int>>::is_always_equal::value ==
60 ( std::allocator_traits<A1<int>>::is_always_equal::value &&
61 std::allocator_traits<min_allocator<int>>::is_always_equal::value)
62 ), "");
63
64
65 // wrapping three allocators (check the values instead of the types)
66 static_assert((
67 std::scoped_allocator_adaptor<A1<int>, A2<int>, A3<int>>::is_always_equal::value ==
68 ( std::allocator_traits<A1<int>>::is_always_equal::value &&
69 std::allocator_traits<A2<int>>::is_always_equal::value &&
70 std::allocator_traits<A3<int>>::is_always_equal::value)
71 ), "");
72
73
74 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
75 }
76