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 // <vector>
10
11 // template <class InputIter> vector(InputIter first, InputIter last);
12
13 #include <vector>
14 #include <cassert>
15 #include <cstddef>
16
17 #include "test_macros.h"
18 #include "test_iterators.h"
19 #include "test_allocator.h"
20 #include "min_allocator.h"
21 #include "asan_testing.h"
22 #if TEST_STD_VER >= 11
23 #include "emplace_constructible.h"
24 #include "container_test_types.h"
25 #endif
26
27 template <class C, class Iterator>
test(Iterator first,Iterator last)28 TEST_CONSTEXPR_CXX20 void test(Iterator first, Iterator last) {
29 {
30 C c(first, last);
31 LIBCPP_ASSERT(c.__invariants());
32 assert(c.size() == static_cast<std::size_t>(std::distance(first, last)));
33 LIBCPP_ASSERT(is_contiguous_container_asan_correct(c));
34 for (typename C::const_iterator i = c.cbegin(), e = c.cend(); i != e;
35 ++i, ++first)
36 assert(*i == *first);
37 }
38 // Test with an empty range
39 {
40 C c(first, first);
41 LIBCPP_ASSERT(c.__invariants());
42 assert(c.empty());
43 LIBCPP_ASSERT(is_contiguous_container_asan_correct(c));
44 }
45 }
46
basic_test_cases()47 TEST_CONSTEXPR_CXX20 void basic_test_cases() {
48 int a[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 8, 7, 6, 5, 4, 3, 1, 0};
49 int* an = a + sizeof(a) / sizeof(a[0]);
50 test<std::vector<int> >(cpp17_input_iterator<const int*>(a),
51 cpp17_input_iterator<const int*>(an));
52 test<std::vector<int> >(forward_iterator<const int*>(a),
53 forward_iterator<const int*>(an));
54 test<std::vector<int> >(bidirectional_iterator<const int*>(a),
55 bidirectional_iterator<const int*>(an));
56 test<std::vector<int> >(random_access_iterator<const int*>(a),
57 random_access_iterator<const int*>(an));
58 test<std::vector<int> >(a, an);
59
60 test<std::vector<int, limited_allocator<int, 63> > >(
61 cpp17_input_iterator<const int*>(a), cpp17_input_iterator<const int*>(an));
62 // Add 1 for implementations that dynamically allocate a container proxy.
63 test<std::vector<int, limited_allocator<int, 18 + 1> > >(
64 forward_iterator<const int*>(a), forward_iterator<const int*>(an));
65 test<std::vector<int, limited_allocator<int, 18 + 1> > >(
66 bidirectional_iterator<const int*>(a),
67 bidirectional_iterator<const int*>(an));
68 test<std::vector<int, limited_allocator<int, 18 + 1> > >(
69 random_access_iterator<const int*>(a),
70 random_access_iterator<const int*>(an));
71 test<std::vector<int, limited_allocator<int, 18 + 1> > >(a, an);
72 #if TEST_STD_VER >= 11
73 test<std::vector<int, min_allocator<int> > >(cpp17_input_iterator<const int*>(a),
74 cpp17_input_iterator<const int*>(an));
75 test<std::vector<int, min_allocator<int> > >(
76 forward_iterator<const int*>(a), forward_iterator<const int*>(an));
77 test<std::vector<int, min_allocator<int> > >(
78 bidirectional_iterator<const int*>(a),
79 bidirectional_iterator<const int*>(an));
80 test<std::vector<int, min_allocator<int> > >(
81 random_access_iterator<const int*>(a),
82 random_access_iterator<const int*>(an));
83 test<std::vector<int> >(a, an);
84 #endif
85 }
86
emplaceable_concept_tests()87 TEST_CONSTEXPR_CXX20 void emplaceable_concept_tests() {
88 #if TEST_STD_VER >= 11
89 int arr1[] = {42};
90 int arr2[] = {1, 101, 42};
91 {
92 using T = EmplaceConstructible<int>;
93 using It = forward_iterator<int*>;
94 {
95 std::vector<T> v(It(arr1), It(std::end(arr1)));
96 assert(v[0].value == 42);
97 }
98 {
99 std::vector<T> v(It(arr2), It(std::end(arr2)));
100 assert(v[0].value == 1);
101 assert(v[1].value == 101);
102 assert(v[2].value == 42);
103 }
104 }
105 {
106 using T = EmplaceConstructibleAndMoveInsertable<int>;
107 using It = cpp17_input_iterator<int*>;
108 {
109 std::vector<T> v(It(arr1), It(std::end(arr1)));
110 assert(v[0].copied == 0);
111 assert(v[0].value == 42);
112 }
113 {
114 std::vector<T> v(It(arr2), It(std::end(arr2)));
115 //assert(v[0].copied == 0);
116 assert(v[0].value == 1);
117 //assert(v[1].copied == 0);
118 assert(v[1].value == 101);
119 assert(v[2].copied == 0);
120 assert(v[2].value == 42);
121 }
122 }
123 #endif
124 }
125
test_ctor_under_alloc()126 void test_ctor_under_alloc() {
127 #if TEST_STD_VER >= 11
128 int arr1[] = {42};
129 int arr2[] = {1, 101, 42};
130 {
131 using C = TCT::vector<>;
132 using It = forward_iterator<int*>;
133 {
134 ExpectConstructGuard<int&> G(1);
135 C v(It(arr1), It(std::end(arr1)));
136 }
137 {
138 ExpectConstructGuard<int&> G(3);
139 C v(It(arr2), It(std::end(arr2)));
140 }
141 }
142 {
143 using C = TCT::vector<>;
144 using It = cpp17_input_iterator<int*>;
145 {
146 ExpectConstructGuard<int&> G(1);
147 C v(It(arr1), It(std::end(arr1)));
148 }
149 {
150 //ExpectConstructGuard<int&> G(3);
151 //C v(It(arr2), It(std::end(arr2)), a);
152 }
153 }
154 #endif
155 }
156
157 // In C++03, you can't instantiate a template with a local type.
158 struct B1 { int x; };
159 struct B2 { int y; };
160 struct Der : B1, B2 { int z; };
161
162 // Initialize a vector with a different value type.
test_ctor_with_different_value_type()163 TEST_CONSTEXPR_CXX20 void test_ctor_with_different_value_type() {
164 {
165 // Make sure initialization is performed with each element value, not with
166 // a memory blob.
167 float array[3] = {0.0f, 1.0f, 2.0f};
168 TEST_DIAGNOSTIC_PUSH
169 TEST_MSVC_DIAGNOSTIC_IGNORED(4244) // conversion from 'float' to 'int', possible loss of data
170 std::vector<int> v(array, array + 3);
171 TEST_DIAGNOSTIC_POP
172 assert(v[0] == 0);
173 assert(v[1] == 1);
174 assert(v[2] == 2);
175 }
176 {
177 Der z;
178 Der *array[1] = { &z };
179 // Though the types Der* and B2* are very similar, initialization still cannot
180 // be done with `memcpy`.
181 std::vector<B2*> v(array, array + 1);
182 assert(v[0] == &z);
183 }
184 {
185 // Though the types are different, initialization can be done with `memcpy`.
186 int32_t array[1] = { -1 };
187 std::vector<uint32_t> v(array, array + 1);
188 assert(v[0] == 4294967295U);
189 }
190 }
191
tests()192 TEST_CONSTEXPR_CXX20 bool tests() {
193 basic_test_cases();
194 emplaceable_concept_tests(); // See PR34898
195 test_ctor_with_different_value_type();
196
197 return true;
198 }
199
main(int,char **)200 int main(int, char**)
201 {
202 tests();
203 test_ctor_under_alloc();
204 #if TEST_STD_VER > 17
205 static_assert(tests());
206 #endif
207 return 0;
208 }
209