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 // <functional>
11
12 // template <class T>
13 // struct hash
14 // : public unary_function<T, size_t>
15 // {
16 // size_t operator()(T val) const;
17 // };
18
19 // Not very portable
20
21 #include <vector>
22 #include <cassert>
23 #include <type_traits>
24
25 #include "min_allocator.h"
26
main()27 int main()
28 {
29 {
30 typedef std::vector<bool> T;
31 typedef std::hash<T> H;
32 static_assert((std::is_same<H::argument_type, T>::value), "" );
33 static_assert((std::is_same<H::result_type, std::size_t>::value), "" );
34
35 bool ba[] = {true, false, true, true, false};
36 T vb(std::begin(ba), std::end(ba));
37 H h;
38 assert(h(vb) != 0);
39 }
40 #if __cplusplus >= 201103L
41 {
42 typedef std::vector<bool, min_allocator<bool>> T;
43 typedef std::hash<T> H;
44 static_assert((std::is_base_of<std::unary_function<T, std::size_t>,
45 H>::value), "");
46 bool ba[] = {true, false, true, true, false};
47 T vb(std::begin(ba), std::end(ba));
48 H h;
49 assert(h(vb) != 0);
50 }
51 #endif
52 }
53