内存泄露 Heap Corruption Dected

VS :  Error Message in Debug Mode :

Heap Corruption Dectected

After Normal block (#81) at 0x003f74c0 CRT detected that the application wrote to memory after end of heap buffer

which is not appeare in Release Mode ( it terminate itself sliently)

This is a typical memory leak:

Reason of my situation:

int total_lenth = 6;
char *pstr = new char[total_lenth];
strcpy(pstr , "abcdefg");//Reason: store more than it could contain 
delete pstr;//error happen here

必须 “一个字节不差”