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VC str.Format 错误 Buffer too small

2013-05-23 00:00 309 查看

CString output ;
int size = m_NicInfo.size();
output.Format(_T("共%d块网卡\r\n"),size);
//VE_NicINFO_IT  it = this->m_NicInfo.begin();
//for(; it != m_NicInfo.end(); ++it){
//	CString tmp;
//	tmp.Format(_T("网卡GUID:%s\r\n"),it->NicGUID);
//	output += tmp;
//	tmp.Format(_T("网卡描述:%s\r\n"),it->NicDesc);
//	output += tmp;
//	tmp.Format(_T("网卡名称:%s\r\n"),it->NicName);
//	output += tmp;
//	tmp.Format(_T("网卡注册表中INDEX:%s\r\n"),it->NicClassIndex);
//	output += tmp;
//}
for(int pos = 0; pos < size ; pos++){
CString tmp;
tmp.Format(_T("网卡GUID:%s\r\n"),m_NicInfo.at(pos).NicGUID);
output += tmp;
tmp.Format(_T("网卡描述:%s\r\n"),m_NicInfo.at(pos).NicDesc);
output += tmp;
tmp.Format(_T("网卡名称:%s\r\n"),m_NicInfo.at(pos).NicName);
output += tmp;
tmp.Format(_T("网卡注册表中INDEX:%s\r\n"),m_NicInfo.at(pos).NicClassIndex);
output += tmp;
}
writeLog(output);

str.Format 错误 Buffer too small

The call will fail if the string object itself is offered as a parameter to Format. For example, the following code will cause unpredictable results:

CAtlString str = _T("Some Data");
str.Format(_T("%s%d"), str, 123);
// Attention: str is also used in the parameter list.

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