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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 count(const key_type& k) const;
17 
18 #include <unordered_set>
19 #include <cassert>
20 
21 #include "min_allocator.h"
22 
main()23 int main()
24 {
25     {
26         typedef std::unordered_set<int> C;
27         typedef int P;
28         P a[] =
29         {
30             P(10),
31             P(20),
32             P(30),
33             P(40),
34             P(50),
35             P(50),
36             P(50),
37             P(60),
38             P(70),
39             P(80)
40         };
41         const C c(std::begin(a), std::end(a));
42         assert(c.count(30) == 1);
43         assert(c.count(50) == 1);
44         assert(c.count(5) == 0);
45     }
46 #if __cplusplus >= 201103L
47     {
48         typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
49         typedef int P;
50         P a[] =
51         {
52             P(10),
53             P(20),
54             P(30),
55             P(40),
56             P(50),
57             P(50),
58             P(50),
59             P(60),
60             P(70),
61             P(80)
62         };
63         const C c(std::begin(a), std::end(a));
64         assert(c.count(30) == 1);
65         assert(c.count(50) == 1);
66         assert(c.count(5) == 0);
67     }
68 #endif
69 }
70