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 // <memory>
10 
11 // unique_ptr
12 
13 // test op[](size_t)
14 
15 #include <memory>
16 #include <cassert>
17 
18 class A {
19   int state_;
20   static int next_;
21 
22 public:
23   A() : state_(++next_) {}
24   int get() const { return state_; }
25 
26   friend bool operator==(const A& x, int y) { return x.state_ == y; }
27 
28   A& operator=(int i) {
29     state_ = i;
30     return *this;
31   }
32 };
33 
34 int A::next_ = 0;
35 
36 int main(int, char**) {
37   std::unique_ptr<A[]> p(new A[3]);
38   assert(p[0] == 1);
39   assert(p[1] == 2);
40   assert(p[2] == 3);
41   p[0] = 3;
42   p[1] = 2;
43   p[2] = 1;
44   assert(p[0] == 3);
45   assert(p[1] == 2);
46   assert(p[2] == 1);
47 
48   return 0;
49 }
50