push_back到向量

Question

我正在从另一个boost共享ptr指针创建一个boost共享指针，并将其添加到另一个类中的向量中，如下所示：

boost::shared_ptr<Parcel> parcel; // this is a variable initialized in the constructor when the class is created.

boost::shared_ptr<Parcel> profitableParcel = parcel;
            devModel->addProfitableParcels(profitableParcel);

将指针添加到向量的函数如下：

        void DeveloperModel::addProfitableParcels(boost::shared_ptr<Parcel> profitableParcel)
        {
            {
                boost::mutex::scoped_lock(addParcelLock);
                std::vector<boost::shared_ptr<Parcel> > profitableParcels;
                profitableParcels.push_back(profitableParcel);
            }
        }

我在获取SIGABRT：ABORTED错误（双重释放或损坏（！prev）：0x00007fffac0d0c00 ***）当尝试将第二个元素添加到int_free（malloc.c）中的向量时，下面是堆栈跟踪：

下面是我得到的另一个堆栈跟踪。

下面是Parcel.cpp的复制构造函数和赋值运算符。似乎在某种程度上，在Parcel类的复制构造函数之前，＆＃34; source＆＃34;变量变为null。

 Parcel::Parcel( const Parcel& source)
{
    this->id = source.id;
    this->tazId = source.tazId;
    this->lot_size = source.lot_size;
    this->gpr = source.gpr;
    this->land_use_type_id = source.land_use_type_id;
    this->owner_name = source.owner_name;
    this->owner_category = source.owner_category;
    this->last_transaction_date = source.last_transaction_date;
    this->last_transaction_type_total = source.last_transaction_type_total;
    this->psm_per_gps = source.psm_per_gps;
}

Parcel& Parcel::operator=( const Parcel& source)
{
    this->id = source.id;
    this->tazId = source.tazId;
    this->lot_size = source.lot_size;
    this->gpr = source.gpr;
    this->land_use_type_id = source.land_use_type_id;
    this->owner_name = source.owner_name;
    this->owner_category = source.owner_category;
    this->last_transaction_date = source.last_transaction_date;
    this->last_transaction_type_total = source.last_transaction_type_total;
    this->psm_per_gps = source.psm_per_gps;
    return *this;
}