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// void resize(size_type sz);
12
13#include <vector>
14#include <cassert>
15
16#include "test_macros.h"
17#include "test_allocator.h"
18#include "MoveOnly.h"
19#include "min_allocator.h"
20#include "asan_testing.h"
21
22TEST_CONSTEXPR_CXX20 bool tests() {
23 {
24 std::vector<int> v(100);
25 v.resize(new_size: 50);
26 assert(v.size() == 50);
27 assert(v.capacity() == 100);
28 assert(is_contiguous_container_asan_correct(v));
29 v.resize(new_size: 200);
30 assert(v.size() == 200);
31 assert(v.capacity() >= 200);
32 assert(is_contiguous_container_asan_correct(v));
33 }
34 {
35 // Add 1 for implementations that dynamically allocate a container proxy.
36 std::vector<int, limited_allocator<int, 300 + 1> > v(100);
37 v.resize(50);
38 assert(v.size() == 50);
39 assert(v.capacity() == 100);
40 assert(is_contiguous_container_asan_correct(v));
41 v.resize(200);
42 assert(v.size() == 200);
43 assert(v.capacity() >= 200);
44 assert(is_contiguous_container_asan_correct(v));
45 }
46#if TEST_STD_VER >= 11
47 {
48 std::vector<MoveOnly> v(100);
49 v.resize(50);
50 assert(v.size() == 50);
51 assert(v.capacity() == 100);
52 assert(is_contiguous_container_asan_correct(v));
53 v.resize(200);
54 assert(v.size() == 200);
55 assert(v.capacity() >= 200);
56 assert(is_contiguous_container_asan_correct(v));
57 }
58 {
59 // Add 1 for implementations that dynamically allocate a container proxy.
60 std::vector<MoveOnly, limited_allocator<MoveOnly, 300 + 1> > v(100);
61 v.resize(50);
62 assert(v.size() == 50);
63 assert(v.capacity() == 100);
64 assert(is_contiguous_container_asan_correct(v));
65 v.resize(200);
66 assert(v.size() == 200);
67 assert(v.capacity() >= 200);
68 assert(is_contiguous_container_asan_correct(v));
69 }
70 {
71 std::vector<MoveOnly, min_allocator<MoveOnly>> v(100);
72 v.resize(50);
73 assert(v.size() == 50);
74 assert(v.capacity() == 100);
75 assert(is_contiguous_container_asan_correct(v));
76 v.resize(200);
77 assert(v.size() == 200);
78 assert(v.capacity() >= 200);
79 assert(is_contiguous_container_asan_correct(v));
80 }
81 {
82 std::vector<int, safe_allocator<int>> v(100);
83 v.resize(50);
84 assert(v.size() == 50);
85 assert(v.capacity() == 100);
86 assert(is_contiguous_container_asan_correct(v));
87 v.resize(200);
88 assert(v.size() == 200);
89 assert(v.capacity() >= 200);
90 assert(is_contiguous_container_asan_correct(v));
91 }
92#endif
93
94 return true;
95}
96
97int main(int, char**) {
98 tests();
99
100#if TEST_STD_VER > 17
101 static_assert(tests());
102#endif
103
104 return 0;
105}
106

source code of libcxx/test/std/containers/sequences/vector/vector.capacity/resize_size.pass.cpp