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// size_type max_size() const;
12
13#include <cassert>
14#include <limits>
15#include <type_traits>
16#include <vector>
17
18#include "test_allocator.h"
19#include "test_macros.h"
20
21
22TEST_CONSTEXPR_CXX20 bool test() {
23 {
24 typedef limited_allocator<int, 10> A;
25 typedef std::vector<int, A> C;
26 C c;
27 assert(c.max_size() <= 10);
28 LIBCPP_ASSERT(c.max_size() == 10);
29 }
30 {
31 typedef limited_allocator<int, (std::size_t)-1> A;
32 typedef std::vector<int, A> C;
33 const C::size_type max_dist =
34 static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
35 C c;
36 assert(c.max_size() <= max_dist);
37 LIBCPP_ASSERT(c.max_size() == max_dist);
38 }
39 {
40 typedef std::vector<char> C;
41 const C::size_type max_dist =
42 static_cast<C::size_type>(std::numeric_limits<C::difference_type>::max());
43 C c;
44 assert(c.max_size() <= max_dist);
45 assert(c.max_size() <= alloc_max_size(c.get_allocator()));
46 }
47
48 return true;
49}
50
51int main(int, char**) {
52 test();
53
54#if TEST_STD_VER > 17
55 static_assert(test());
56#endif
57
58 return 0;
59}
60

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