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 #ifndef A_H
10 #define A_H
11 
12 #include <cassert>
13 
14 class A
15 {
16     int id_;
17 public:
A(int id)18     explicit A(int id) : id_(id) {++count;}
A(const A & a)19     A(const A& a) : id_(a.id_) {++count;}
~A()20     ~A() {assert(id_ >= 0); id_ = -1; --count;}
21 
id()22     int id() const {return id_;}
23 
24     static int count;
25 };
26 
27 int A::count = 0;
28 
29 #endif  // A_H
30