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 // <functional>
10 
11 // template <class T>
12 // struct hash
13 // {
14 //     size_t operator()(T val) const;
15 // };
16 
17 // Not very portable
18 
19 #include <vector>
20 #include <cassert>
21 #include <iterator>
22 #include <type_traits>
23 
24 #include "test_macros.h"
25 #include "min_allocator.h"
26 
27 int main(int, char**)
28 {
29     {
30     typedef std::vector<bool> T;
31     typedef std::hash<T> H;
32 #if TEST_STD_VER <= 14
33     static_assert((std::is_same<H::argument_type, T>::value), "" );
34     static_assert((std::is_same<H::result_type, std::size_t>::value), "" );
35 #endif
36     ASSERT_NOEXCEPT(H()(T()));
37 
38     bool ba[] = {true, false, true, true, false};
39     T vb(std::begin(ba), std::end(ba));
40     H h;
41     assert(h(vb) != 0);
42     }
43 #if TEST_STD_VER >= 11
44     {
45     typedef std::vector<bool, min_allocator<bool>> T;
46     typedef std::hash<T> H;
47 #if TEST_STD_VER <= 14
48     static_assert((std::is_same<H::argument_type, T>::value), "" );
49     static_assert((std::is_same<H::result_type, std::size_t>::value), "" );
50 #endif
51     ASSERT_NOEXCEPT(H()(T()));
52     bool ba[] = {true, false, true, true, false};
53     T vb(std::begin(ba), std::end(ba));
54     H h;
55     assert(h(vb) != 0);
56     }
57 #endif
58 
59   return 0;
60 }
61