C++程序  |  26行  |  557 B

// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "heap/stubs.h"

namespace blink {

struct HeapObject : public GarbageCollected<HeapObject> {
    void Trace(Visitor*) { }
};

template<typename T>
class TemplateBase
    : public GarbageCollected<TemplateBase<T> > {
public:
    void Trace(Visitor* visitor) { visitor->Trace(m_obj); }
private:
    Member<HeapObject> m_obj;
};

class Subclass : public TemplateBase<Subclass> {
};

}