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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-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef A_H10#define A_H11 12#include <cassert>13 14class A15{16 int id_;17public:18 explicit A(int id) : id_(id) {++count;}19 A(const A& a) : id_(a.id_) {++count;}20 ~A() {assert(id_ >= 0); id_ = -1; --count;}21 22 A& operator=(const A& other) { id_ = other.id_; return *this; }23 24 int id() const {return id_;}25 26 static int count;27};28 29int A::count = 0;30 31#endif // A_H32