Question

此代码有什么问题：

    HRESULT AllocateAndFillOutParameters(DWORD * a_Attrib_Count, BSTR ** a_AttribName, DWORD** a_AttribId,BSTR** a_AttribDescription, BSTR** a_AttribDataType, 
    BSTR** a_AttribAdvanceDataType,DWORD** a_attribfieldlength, VECTOROFATTRIBUTESSTRUCT a_vectAttributes )
{
 HRESULT hr = S_OK;
 VECTOROFATTRIBUTESSTRUCT::iterator itr_vectCategory = a_vectAttributes.begin();

    // Memory Allocation 
     *a_Attrib_Count = a_vectAttributes.size();
    *a_AttribName = (BSTR*)CoTaskMemAlloc(*a_Attrib_Count * sizeof(BSTR));
    *a_AttribDescription = (BSTR*)CoTaskMemAlloc(*a_Attrib_Count * sizeof(BSTR));
    *a_AttribId = (DWORD*)CoTaskMemAlloc(*a_Attrib_Count * sizeof(DWORD));
    *a_AttribDataType = (BSTR*)CoTaskMemAlloc(*a_Attrib_Count * sizeof(BSTR));
    *a_AttribAdvanceDataType = (BSTR*)CoTaskMemAlloc(*a_Attrib_Count * sizeof(BSTR));
     *a_attribfieldlength = (DWORD*)CoTaskMemAlloc(*a_Attrib_Count * sizeof(DWORD));
    //

    for(int i=0 ;itr_vectCategory != a_vectAttributes.end(); itr_vectCategory++, i++)
    {
        *((*a_AttribName)+i) = SysAllocString(itr_vectCategory->m_strAttributeName.c_str());
        *((*a_AttribId)+i) = itr_vectCategory->m_dwAttributeId;
        *((*a_AttribDescription)+i) = SysAllocString(itr_vectCategory->m_strAttributeDescription.c_str());
        *((*a_AttribDataType)+i) = SysAllocString(itr_vectCategory->m_strAttributeDataType.c_str());
        *((*a_AttribAdvanceDataType)+i) = SysAllocString(itr_vectCategory->m_strAttributeAdvanceDataType.c_str());
        *((*a_attribfieldlength)+i) = (itr_vectCategory->m_dwAttributeFieldLength);

    }

 return hr;
}

它给出了堆损坏的运行时异常，我是以错误的方式分配的吗？谢谢你的帮助。

Answer 1

我无法告诉您错误的位置，但我建议您使用gflags程序下载Debugging Tools for Windows然后reading the docs启用页面堆调试，这可能会让您捕获实际发生堆损坏的错误。

E_OUTOFMEMORY，堆腐败

1 个答案: