“val” 为 16进制的字符串，想把字符串每4位的数据提取出来，转成 unsigend short类型，数据已经提取出了，但是在函数调用结束时报错： Run-Time Check Failure #2 - Stack around the variable ‘usval‘ was corrupted。
TCHAR* pMacValue = (TCHAR*)(LPCTSTR)val;
TCHAR mac_item[16] = {0};
unsigned short usval = 0;
for(int t = 0;t<tmp->Size;t++)
{
_tcsncpy(mac_item, pMacValue+t*4, 4);
_stscanf(mac_item, _T("%X"), &usval);
}
修改类型后，就不在报错了：
TCHAR* pMacValue = (TCHAR*)(LPCTSTR)val;
TCHAR mac_item[16] = {0};
unsigned long usval = 0;
for(int t = 0;t<tmp->Size;t++)
{
_tcsncpy(mac_item, pMacValue+t*4, 4);
_stscanf(mac_item, _T("%X"), &usval);
}
希望专家们看到后能帮忙解答下导致问题产生的原因。
Run-Time Check Failure #2 - Stack around the variable 'usval' was corrupted
原文：http://blog.csdn.net/gllg1314/article/details/40506685