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
27template <class C, class Iterator>
28TEST_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; ++i, ++first)
35 assert(*i == *first);
36 }
37 // Test with an empty range
38 {
39 C c(first, first);
40 LIBCPP_ASSERT(c.__invariants());
41 assert(c.empty());
42 LIBCPP_ASSERT(is_contiguous_container_asan_correct(c));
43 }
44}
45
46TEST_CONSTEXPR_CXX20 void basic_test_cases() {
47 int a[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 8, 7, 6, 5, 4, 3, 1, 0};
48 int* an = a + sizeof(a) / sizeof(a[0]);
49 test<std::vector<int> >(cpp17_input_iterator<const int*>(a), cpp17_input_iterator<const int*>(an));
50 test<std::vector<int> >(forward_iterator<const int*>(a), forward_iterator<const int*>(an));
51 test<std::vector<int> >(bidirectional_iterator<const int*>(a), bidirectional_iterator<const int*>(an));
52 test<std::vector<int> >(random_access_iterator<const int*>(a), random_access_iterator<const int*>(an));
53 test<std::vector<int> >(a, an);
54
55 test<std::vector<int, limited_allocator<int, 63> > >(
56 cpp17_input_iterator<const int*>(a), cpp17_input_iterator<const int*>(an));
57 // Add 1 for implementations that dynamically allocate a container proxy.
58 test<std::vector<int, limited_allocator<int, 18 + 1> > >(
59 forward_iterator<const int*>(a), forward_iterator<const int*>(an));
60 test<std::vector<int, limited_allocator<int, 18 + 1> > >(
61 bidirectional_iterator<const int*>(a), bidirectional_iterator<const int*>(an));
62 test<std::vector<int, limited_allocator<int, 18 + 1> > >(
63 random_access_iterator<const int*>(a), random_access_iterator<const int*>(an));
64 test<std::vector<int, limited_allocator<int, 18 + 1> > >(a, an);
65#if TEST_STD_VER >= 11
66 test<std::vector<int, min_allocator<int> > >(
67 cpp17_input_iterator<const int*>(a), cpp17_input_iterator<const int*>(an));
68 test<std::vector<int, min_allocator<int> > >(forward_iterator<const int*>(a), forward_iterator<const int*>(an));
69 test<std::vector<int, min_allocator<int> > >(
70 bidirectional_iterator<const int*>(a), bidirectional_iterator<const int*>(an));
71 test<std::vector<int, min_allocator<int> > >(
72 random_access_iterator<const int*>(a), random_access_iterator<const int*>(an));
73 test<std::vector<int> >(a, an);
74 test<std::vector<int, safe_allocator<int> > >(
75 cpp17_input_iterator<const int*>(a), cpp17_input_iterator<const int*>(an));
76 test<std::vector<int, safe_allocator<int> > >(forward_iterator<const int*>(a), forward_iterator<const int*>(an));
77 test<std::vector<int, safe_allocator<int> > >(
78 bidirectional_iterator<const int*>(a), bidirectional_iterator<const int*>(an));
79 test<std::vector<int, safe_allocator<int> > >(
80 random_access_iterator<const int*>(a), random_access_iterator<const int*>(an));
81
82 // Regression test for https://github.com/llvm/llvm-project/issues/46841
83 {
84 std::vector<int> v1({}, forward_iterator<const int*>{});
85 std::vector<int> v2(forward_iterator<const int*>{}, {});
86 }
87#endif
88}
89
90TEST_CONSTEXPR_CXX20 void emplaceable_concept_tests() {
91#if TEST_STD_VER >= 11
92 int arr1[] = {42};
93 int arr2[] = {1, 101, 42};
94 {
95 using T = EmplaceConstructible<int>;
96 using It = forward_iterator<int*>;
97 {
98 std::vector<T> v(It(arr1), It(std::end(arr1)));
99 assert(v[0].value == 42);
100 }
101 {
102 std::vector<T> v(It(arr2), It(std::end(arr2)));
103 assert(v[0].value == 1);
104 assert(v[1].value == 101);
105 assert(v[2].value == 42);
106 }
107 }
108 {
109 using T = EmplaceConstructibleAndMoveInsertable<int>;
110 using It = cpp17_input_iterator<int*>;
111 {
112 std::vector<T> v(It(arr1), It(std::end(arr1)));
113 assert(v[0].copied == 0);
114 assert(v[0].value == 42);
115 }
116 {
117 std::vector<T> v(It(arr2), It(std::end(arr2)));
118 //assert(v[0].copied == 0);
119 assert(v[0].value == 1);
120 //assert(v[1].copied == 0);
121 assert(v[1].value == 101);
122 assert(v[2].copied == 0);
123 assert(v[2].value == 42);
124 }
125 }
126#endif
127}
128
129void test_ctor_under_alloc() {
130#if TEST_STD_VER >= 11
131 int arr1[] = {42};
132 int arr2[] = {1, 101, 42};
133 {
134 using C = TCT::vector<>;
135 using It = forward_iterator<int*>;
136 {
137 ExpectConstructGuard<int&> G(1);
138 C v(It(arr1), It(std::end(arr1)));
139 }
140 {
141 ExpectConstructGuard<int&> G(3);
142 C v(It(arr2), It(std::end(arr2)));
143 }
144 }
145 {
146 using C = TCT::vector<>;
147 using It = cpp17_input_iterator<int*>;
148 {
149 ExpectConstructGuard<int&> G(1);
150 C v(It(arr1), It(std::end(arr1)));
151 }
152 {
153 //ExpectConstructGuard<int&> G(3);
154 //C v(It(arr2), It(std::end(arr2)), a);
155 }
156 }
157#endif
158}
159
160// In C++03, you can't instantiate a template with a local type.
161struct B1 {
162 int x;
163};
164struct B2 {
165 int y;
166};
167struct Der : B1, B2 {
168 int z;
169};
170
171// Initialize a vector with a different value type.
172TEST_CONSTEXPR_CXX20 void test_ctor_with_different_value_type() {
173 {
174 // Make sure initialization is performed with each element value, not with
175 // a memory blob.
176 float array[3] = {0.0f, 1.0f, 2.0f};
177 TEST_DIAGNOSTIC_PUSH
178 TEST_MSVC_DIAGNOSTIC_IGNORED(4244) // conversion from 'float' to 'int', possible loss of data
179 std::vector<int> v(array, array + 3);
180 TEST_DIAGNOSTIC_POP
181 assert(v[0] == 0);
182 assert(v[1] == 1);
183 assert(v[2] == 2);
184 }
185 {
186 Der z;
187 Der* array[1] = {&z};
188 // Though the types Der* and B2* are very similar, initialization still cannot
189 // be done with `memcpy`.
190 std::vector<B2*> v(array, array + 1);
191 assert(v[0] == &z);
192 }
193 {
194 // Though the types are different, initialization can be done with `memcpy`.
195 std::int32_t array[1] = {-1};
196 std::vector<std::uint32_t> v(array, array + 1);
197 assert(v[0] == 4294967295U);
198 }
199}
200
201TEST_CONSTEXPR_CXX20 bool tests() {
202 basic_test_cases();
203 emplaceable_concept_tests(); // See PR34898
204 test_ctor_with_different_value_type();
205
206 return true;
207}
208
209int main(int, char**) {
210 tests();
211 test_ctor_under_alloc();
212#if TEST_STD_VER > 17
213 static_assert(tests());
214#endif
215 return 0;
216}
217

source code of libcxx/test/std/containers/sequences/vector/vector.cons/construct_iter_iter.pass.cpp