单件模式的基类，C++

看《游戏编程精粹1》中间有一段代码

void TestFunc1() { TextureMgrtMgr; Texture *pTexStone = g_TextureMgr.GetTexture("stone"); } void TestFunc2() { Ston *pSingleton = Ston::CreatePtr(); if (pSingleton) { delete pSingleton; pSingleton = NULL; } }    int _tmain(int argc, _TCHAR* argv[]) {  int a = (int)(int*)1; int b = (int)(double*)1;  TestFunc1();  TestFunc2();   Texture *pTexStone = g_TextureMgr.GetTexture("stone"); return 0; }

当然在Texture *pTex.....一句会有一个断言提示。因为对象已经被销毁了嘛