Question

这是我的破坏者：

CDBColumnInfo::~CDBColumnInfo()
{
    m_rowIndexDataMap.clear();
    m_colNameList.clear();
    m_colNameMap.clear();
}

退出括号后，它将在函数中引发异常

_CRT_SECURITYCRITICAL_ATTRIBUTE
void __CRTDECL operator delete(void* const block) noexcept
{
    #ifdef _DEBUG
    _free_dbg(block, _UNKNOWN_BLOCK);
    #else
    free(block);
    #endif
}

当我调试时，我签入反汇编代码，它在此行显示该异常：

00007FFEA4AB8660  call        std::map<int,_bstr_t,std::less<int>,std::allocator<std::pair<int const ,_bstr_t> > >::~map<int,_bstr_t,std::less<int>,std::allocator<std::pair<int const ,_bstr_t> > > (07FFEA4A43E7Ch)

我不知道到底发生了什么，但是在我的程序中定义了这样的地图：

//代码已更新

std::map<int, _bstr_t> m_rowIndexDataMap; //class variable

HRESULT CDBColumnInfo::AddData() 
{
    CComPtr<CDBColumnInfo> spResult = new CDBColumnInfo();
    map<int,_bstr_t> recordMap ;
    _bstr_t record;
    for (int rownum = 0; rownum < num_rows; ++rownum){
        const int num_cols = PQnfields(res);
        record = "";
        for (int colnum = 0; colnum < num_cols; ++colnum) {
            if (PQgetisnull(res, rownum, colnum) == 0) {
                char* data = PQgetvalue(res, rownum, colnum);
                record = record + data;
            }
            else {
                record = record + L"<NULL>";
            }

            if (colnum + 1 < num_cols) {
                record = record + "#";
            }
        }
    recordMap[rownum] = record;             
    }

    spResult->SetMap(recordMap);
    ...
    ...

}
STDMETHODIMP CDBColumnInfo::SetMap (std::map<int, _bstr_t> dataMap)
{
    CComSingleLock lock (m_critSec);
    m_rowIndexDataMap = dataMap;
    return S_OK;
}

STDMETHODIMP CDBColumnInfo::GetMap (DBrowIndexToDataMap& dataMap)
{
    CComSingleLock lock (m_critSec);
    dataMap = m_rowIndexDataMap;
    return S_OK;
}


CDBColumnInfo::~CDBColumnInfo()
{
    m_rowIndexDataMap.clear();
    m_colNameList.clear();
    m_colNameMap.clear();
}

Answer 1

从析构函数中删除第一个“〜”。应该是

CDBColumnInfo::~CDBColumnInfo()
{
    m_rowIndexDataMap.clear();
    m_colNameList.clear();
    m_colNameMap.clear();
}

析构函数之外的异常

1 个答案: