1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <unordered_set>
11
12// template <class Value, class Hash = hash<Value>, class Pred = equal_to<Value>,
13//           class Alloc = allocator<Value>>
14// class unordered_set
15
16// size_type bucket(const key_type& __k) const;
17
18#ifdef _LIBCPP_DEBUG
19#define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : std::exit(0))
20#endif
21
22#include <unordered_set>
23#include <cassert>
24
25#include "min_allocator.h"
26
27int main()
28{
29    {
30        typedef std::unordered_set<int> C;
31        typedef int P;
32        P a[] =
33        {
34            P(1),
35            P(2),
36            P(3),
37            P(4),
38            P(1),
39            P(2)
40        };
41        const C c(std::begin(a), std::end(a));
42        size_t bc = c.bucket_count();
43        assert(bc >= 5);
44        for (size_t i = 0; i < 13; ++i)
45            assert(c.bucket(i) == i % bc);
46    }
47#if __cplusplus >= 201103L
48    {
49        typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
50        typedef int P;
51        P a[] =
52        {
53            P(1),
54            P(2),
55            P(3),
56            P(4),
57            P(1),
58            P(2)
59        };
60        const C c(std::begin(a), std::end(a));
61        size_t bc = c.bucket_count();
62        assert(bc >= 5);
63        for (size_t i = 0; i < 13; ++i)
64            assert(c.bucket(i) == i % bc);
65    }
66#endif
67#if _LIBCPP_DEBUG_LEVEL >= 1
68    {
69        typedef std::unordered_set<int> C;
70        C c;
71        C::size_type i = c.bucket(3);
72        assert(false);
73    }
74#endif
75}
76