解决 after Normal block(#908) at 0x399EC0. CRT detected that the application wrote to memory after end of heap buffer 内存出错

1. 数组越界所导致

char* pBuffer = new char[2];
　 int v = 123;
　 strcpy(pBuffer, &v);
　 delete[] pBuffer;

2. 释放过的内存没有置为0，也就是就是野指针的问题

if (this->mstr != NULL)
   {
   delete[] this->mstr;
   }
   this->mstr = NULL;//必要

3.初学者在申请内存的时候”大意了“

char* pBuffer = new char[strlen(this->p)+1];

却写成了

char* pBuffer = new char(strlen(this->p)+1);

同样会在  析构delete[]的时候出现  内存中断。