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 // <memory>
11
12 // shared_ptr
13
14 // template <class T>
15 // bool operator==(const shared_ptr<T>& x, nullptr_t) noexcept;
16 // template <class T>
17 // bool operator==(nullptr_t, const shared_ptr<T>& y) noexcept;
18 // template <class T>
19 // bool operator!=(const shared_ptr<T>& x, nullptr_t) noexcept;
20 // template <class T>
21 // bool operator!=(nullptr_t, const shared_ptr<T>& y) noexcept;
22 // template <class T>
23 // bool operator<(const shared_ptr<T>& x, nullptr_t) noexcept;
24 // template <class T>
25 // bool operator<(nullptr_t, const shared_ptr<T>& y) noexcept;
26 // template <class T>
27 // bool operator<=(const shared_ptr<T>& x, nullptr_t) noexcept;
28 // template <class T>
29 // bool operator<=(nullptr_t, const shared_ptr<T>& y) noexcept;
30 // template <class T>
31 // bool operator>(const shared_ptr<T>& x, nullptr_t) noexcept;
32 // template <class T>
33 // bool operator>(nullptr_t, const shared_ptr<T>& y) noexcept;
34 // template <class T>
35 // bool operator>=(const shared_ptr<T>& x, nullptr_t) noexcept;
36 // template <class T>
37 // bool operator>=(nullptr_t, const shared_ptr<T>& y) noexcept;
38
39 #include <memory>
40 #include <cassert>
41
do_nothing(int *)42 void do_nothing(int*) {}
43
main()44 int main()
45 {
46 const std::shared_ptr<int> p1(new int(1));
47 assert(!(p1 == nullptr));
48 assert(!(nullptr == p1));
49 assert(!(p1 < nullptr));
50 assert( (nullptr < p1));
51 assert(!(p1 <= nullptr));
52 assert( (nullptr <= p1));
53 assert( (p1 > nullptr));
54 assert(!(nullptr > p1));
55 assert( (p1 >= nullptr));
56 assert(!(nullptr >= p1));
57
58 const std::shared_ptr<int> p2;
59 assert( (p2 == nullptr));
60 assert( (nullptr == p2));
61 assert(!(p2 < nullptr));
62 assert(!(nullptr < p2));
63 assert( (p2 <= nullptr));
64 assert( (nullptr <= p2));
65 assert(!(p2 > nullptr));
66 assert(!(nullptr > p2));
67 assert( (p2 >= nullptr));
68 assert( (nullptr >= p2));
69 }
70