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 pop_back();
12
13#include <vector>
14#include <cassert>
15
16#include "test_macros.h"
17#include "test_allocator.h"
18#include "min_allocator.h"
19
20
21TEST_CONSTEXPR_CXX20 bool tests()
22{
23 {
24 std::vector<int> c;
25 c.push_back(x: 1);
26 assert(c.size() == 1);
27 c.pop_back();
28 assert(c.size() == 0);
29
30 }
31#if TEST_STD_VER >= 11
32 {
33 std::vector<int, min_allocator<int>> c;
34 c.push_back(1);
35 assert(c.size() == 1);
36 c.pop_back();
37 assert(c.size() == 0);
38 }
39#endif
40
41 { // LWG 526
42 int arr[] = {0, 1, 2, 3, 4};
43 int sz = 5;
44 std::vector<int> c(arr, arr+sz);
45 while (c.size() < c.capacity())
46 c.push_back(x: sz++);
47 c.push_back(x: c.front());
48 assert(c.back() == 0);
49 for (int i = 0; i < sz; ++i)
50 assert(c[i] == i);
51 }
52
53 return true;
54}
55
56int main(int, char**)
57{
58 tests();
59#if TEST_STD_VER > 17
60 static_assert(tests());
61#endif
62 return 0;
63}
64

source code of libcxx/test/std/containers/sequences/vector/vector.modifiers/pop_back.pass.cpp