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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 bucket_count() const;
     17 
     18 #include <unordered_set>
     19 #include <cassert>
     20 
     21 #include "min_allocator.h"
     22 
     23 int main()
     24 {
     25     {
     26         typedef std::unordered_set<int> C;
     27         typedef C::const_iterator I;
     28         typedef int P;
     29         const C c;
     30         assert(c.bucket_count() == 0);
     31     }
     32     {
     33         typedef std::unordered_set<int> C;
     34         typedef C::const_iterator I;
     35         typedef int P;
     36         P a[] =
     37         {
     38             P(10),
     39             P(20),
     40             P(30),
     41             P(40),
     42             P(50),
     43             P(60),
     44             P(70),
     45             P(80)
     46         };
     47         const C c(std::begin(a), std::end(a));
     48         assert(c.bucket_count() >= 11);
     49     }
     50 #if __cplusplus >= 201103L
     51     {
     52         typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
     53         typedef C::const_iterator I;
     54         typedef int P;
     55         const C c;
     56         assert(c.bucket_count() == 0);
     57     }
     58     {
     59         typedef std::unordered_set<int, std::hash<int>, std::equal_to<int>, min_allocator<int>> C;
     60         typedef C::const_iterator I;
     61         typedef int P;
     62         P a[] =
     63         {
     64             P(10),
     65             P(20),
     66             P(30),
     67             P(40),
     68             P(50),
     69             P(60),
     70             P(70),
     71             P(80)
     72         };
     73         const C c(std::begin(a), std::end(a));
     74         assert(c.bucket_count() >= 11);
     75     }
     76 #endif
     77 }
     78