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 // The deleter is not called if get() == 0
14 
15 #include <memory>
16 #include <cassert>
17 
18 class Deleter {
19   int state_;
20 
21   Deleter(Deleter&);
22   Deleter& operator=(Deleter&);
23 
24 public:
25   Deleter() : state_(0) {}
26 
27   int state() const { return state_; }
28 
29   void operator()(void*) { ++state_; }
30 };
31 
32 template <class T>
33 void test_basic() {
34   Deleter d;
35   assert(d.state() == 0);
36   {
37     std::unique_ptr<T, Deleter&> p(nullptr, d);
38     assert(p.get() == nullptr);
39     assert(&p.get_deleter() == &d);
40   }
41   assert(d.state() == 0);
42 }
43 
44 int main(int, char**) {
45   test_basic<int>();
46   test_basic<int[]>();
47 
48   return 0;
49 }
50