????1. New?????
????????ù????new??????????????????????????????????????￡?
?????? ???????????
?????? ??????????
?????? ?????????????????
???????????????????????????????????????????????????δ???
1 #include <iostream>
2
3
4 class A {
5     int m_value;
6 public:
7     A(int value) :m_value(value * value){}
8     void Func(){
9         std::cout<< m_value;
10     }
11 };
12
13 int main()
14 {
15     A *aPtr = new A(1);
16     delete *aPtr;
17     system("pause");
18     return 0;
19 }
????????? “A *a = new A(1);” ??????????????￡?
????1     A *aPtr = (A*)malloc(sizeof(A)); // ???????????
????2     aPtr->A::A(1);                   // ???????????
????3     return aPtr;                     // ????????????
???????????仰?????????????????aPtr?????????????????????new????????????????malloc???????????????????÷???????????????new_handler???????new????????????????????????new???????Щ????????鷳??
?????????? “A *a = new A(1);” ??????windows 7?? Visual Studio 2008????
1     A *aPtr = new A(1);
2 0116140D  push        4
3 0116140F  call        operator new (1161190h) ????//???new?????????
4 01161414  add         esp??4
5 01161417  mov         dword ptr [ebp-0ECh]??eax
6 0116141D  mov         dword ptr [ebp-4]??0
7 01161424  cmp         dword ptr [ebp-0ECh]??0
8 0116142B  je          main+72h (1161442h)
9 0116142D  push        1
10 0116142F  mov         ecx??dword ptr [ebp-0ECh]
11 01161435  call        A::A (1161019h) ????????????????//???ù????????г????
12 0116143A  mov         dword ptr [ebp-100h]??eax
13 01161440  jmp         main+7Ch (116144Ch)
14 01161442  mov         dword ptr [ebp-100h]??0
15 0116144C  mov         eax??dword ptr [ebp-100h]
16 01161452  mov         dword ptr [ebp-0F8h]??eax
17 01161458  mov         dword ptr [ebp-4]??0FFFFFFFFh
18 0116145F  mov         ecx??dword ptr [ebp-0F8h]
19 01161465  mov         dword ptr [ebp-14h]??ecx ????????//???????