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
10// TODO: Change to XFAIL once https://github.com/llvm/llvm-project/issues/40340 is fixed
11// UNSUPPORTED: availability-pmr-missing
12
13// test_memory_resource requires RTTI for dynamic_cast
14// UNSUPPORTED: no-rtti
15
16// <memory_resource>
17
18// template <class T> class polymorphic_allocator
19
20// template <class P1, class P2, class U1, class U2>
21// void polymorphic_allocator<T>::construct(pair<P1, P2>*, pair<U1, U2> const&)
22
23#include <memory_resource>
24#include <type_traits>
25#include <utility>
26#include <tuple>
27#include <cassert>
28#include <cstdlib>
29
30#include "test_macros.h"
31#include "test_std_memory_resource.h"
32#include "uses_alloc_types.h"
33#include "controlled_allocators.h"
34#include "test_allocator.h"
35
36template <class UA1, class UA2, class TT, class UU>
37bool doTest(UsesAllocatorType TExpect, UsesAllocatorType UExpect, std::pair<TT, UU> const& p) {
38 using P = std::pair<UA1, UA2>;
39 TestResource R;
40 std::pmr::memory_resource* M = &R;
41 std::pmr::polymorphic_allocator<P> A(M);
42 P* ptr = (P*)std::malloc(size: sizeof(P));
43 P* ptr2 = (P*)std::malloc(size: sizeof(P));
44
45 // UNDER TEST //
46 A.construct(ptr, p);
47
48 A.construct(ptr2, std::piecewise_construct, std::forward_as_tuple(p.first), std::forward_as_tuple(p.second));
49 // ------- //
50
51 bool tres =
52 checkConstruct<decltype((p.first))>(ptr->first, TExpect, M) && checkConstructionEquiv(ptr->first, ptr2->first);
53
54 bool ures = checkConstruct<decltype((p.second))>(ptr->second, UExpect, M) &&
55 checkConstructionEquiv(ptr->second, ptr2->second);
56
57 A.destroy(ptr);
58 std::free(ptr: ptr);
59 A.destroy(ptr2);
60 std::free(ptr: ptr2);
61 return tres && ures;
62}
63
64template <class Alloc, class TT, class UU>
65void test_pmr_uses_allocator(std::pair<TT, UU> const& p) {
66 {
67 using T = NotUsesAllocator<Alloc, 1>;
68 using U = NotUsesAllocator<Alloc, 1>;
69 assert((doTest<T, U>(UA_None, UA_None, p)));
70 }
71 {
72 using T = UsesAllocatorV1<Alloc, 1>;
73 using U = UsesAllocatorV2<Alloc, 1>;
74 assert((doTest<T, U>(UA_AllocArg, UA_AllocLast, p)));
75 }
76 {
77 using T = UsesAllocatorV2<Alloc, 1>;
78 using U = UsesAllocatorV3<Alloc, 1>;
79 assert((doTest<T, U>(UA_AllocLast, UA_AllocArg, p)));
80 }
81 {
82 using T = UsesAllocatorV3<Alloc, 1>;
83 using U = NotUsesAllocator<Alloc, 1>;
84 assert((doTest<T, U>(UA_AllocArg, UA_None, p)));
85 }
86}
87
88template <class Alloc, class TT, class UU>
89void test_pmr_not_uses_allocator(std::pair<TT, UU> const& p) {
90 {
91 using T = NotUsesAllocator<Alloc, 1>;
92 using U = NotUsesAllocator<Alloc, 1>;
93 assert((doTest<T, U>(UA_None, UA_None, p)));
94 }
95 {
96 using T = UsesAllocatorV1<Alloc, 1>;
97 using U = UsesAllocatorV2<Alloc, 1>;
98 assert((doTest<T, U>(UA_None, UA_None, p)));
99 }
100 {
101 using T = UsesAllocatorV2<Alloc, 1>;
102 using U = UsesAllocatorV3<Alloc, 1>;
103 assert((doTest<T, U>(UA_None, UA_None, p)));
104 }
105 {
106 using T = UsesAllocatorV3<Alloc, 1>;
107 using U = NotUsesAllocator<Alloc, 1>;
108 assert((doTest<T, U>(UA_None, UA_None, p)));
109 }
110}
111
112template <class Tp>
113struct Print;
114
115int main(int, char**) {
116 using PMR = std::pmr::memory_resource*;
117 using PMA = std::pmr::polymorphic_allocator<char>;
118 {
119 int x = 42;
120 int y = 42;
121 const std::pair<int, int&> p(x, y);
122 test_pmr_not_uses_allocator<PMR>(p);
123 test_pmr_uses_allocator<PMA>(p);
124 }
125 {
126 int x = 42;
127 int y = 42;
128 const std::pair<int&, int&&> p(x, std::move(y));
129 test_pmr_not_uses_allocator<PMR>(p);
130 test_pmr_uses_allocator<PMA>(p);
131 }
132
133 return 0;
134}
135

source code of libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.mem/construct_pair_const_lvalue_pair.pass.cpp