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 #ifndef A_H
11 #define A_H
12 
13 #include <cassert>
14 
15 class A
16 {
17     int id_;
18 public:
A(int id)19     explicit A(int id) : id_(id) {++count;}
A(const A & a)20     A(const A& a) : id_(a.id_) {++count;}
~A()21     ~A() {assert(id_ >= 0); id_ = -1; --count;}
22 
id()23     int id() const {return id_;}
24 
25     static int count;
26 };
27 
28 int A::count = 0;
29 
30 #endif  // A_H
31