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 reserve(size_type n);
12
13#include <vector>
14#include <cassert>
15#include <stdexcept>
16#include "test_macros.h"
17#include "test_allocator.h"
18#include "min_allocator.h"
19#include "asan_testing.h"
20
21TEST_CONSTEXPR_CXX20 bool tests() {
22 {
23 std::vector<int> v;
24 v.reserve(n: 10);
25 assert(v.capacity() >= 10);
26 assert(is_contiguous_container_asan_correct(v));
27 }
28 {
29 std::vector<int> v(100);
30 assert(v.capacity() == 100);
31 v.reserve(n: 50);
32 assert(v.size() == 100);
33 assert(v.capacity() == 100);
34 v.reserve(n: 150);
35 assert(v.size() == 100);
36 assert(v.capacity() == 150);
37 assert(is_contiguous_container_asan_correct(v));
38 }
39 {
40 // Add 1 for implementations that dynamically allocate a container proxy.
41 std::vector<int, limited_allocator<int, 250 + 1> > v(100);
42 assert(v.capacity() == 100);
43 v.reserve(50);
44 assert(v.size() == 100);
45 assert(v.capacity() == 100);
46 v.reserve(150);
47 assert(v.size() == 100);
48 assert(v.capacity() == 150);
49 assert(is_contiguous_container_asan_correct(v));
50 }
51#if TEST_STD_VER >= 11
52 {
53 std::vector<int, min_allocator<int>> v;
54 v.reserve(10);
55 assert(v.capacity() >= 10);
56 assert(is_contiguous_container_asan_correct(v));
57 }
58 {
59 std::vector<int, min_allocator<int>> v(100);
60 assert(v.capacity() == 100);
61 v.reserve(50);
62 assert(v.size() == 100);
63 assert(v.capacity() == 100);
64 v.reserve(150);
65 assert(v.size() == 100);
66 assert(v.capacity() == 150);
67 assert(is_contiguous_container_asan_correct(v));
68 }
69 {
70 std::vector<int, safe_allocator<int>> v;
71 v.reserve(10);
72 assert(v.capacity() >= 10);
73 assert(is_contiguous_container_asan_correct(v));
74 }
75 {
76 std::vector<int, safe_allocator<int>> v(100);
77 assert(v.capacity() == 100);
78 v.reserve(50);
79 assert(v.size() == 100);
80 assert(v.capacity() == 100);
81 v.reserve(150);
82 assert(v.size() == 100);
83 assert(v.capacity() == 150);
84 assert(is_contiguous_container_asan_correct(v));
85 }
86#endif
87
88 return true;
89}
90
91int main(int, char**) {
92 tests();
93
94#if TEST_STD_VER > 17
95 static_assert(tests());
96#endif
97
98 return 0;
99}
100

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