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