_ReturnAddress 使用，_returnaddress使用

_ReturnAddress 使用，_returnaddress使用

msdn：

The _ReturnAddress intrinsic provides the address of the instruction in the calling function that will be executed after control returns to the caller.

_ReturnAddress 返回當前調用函數返回的地址，即函數嚇一跳指令地址

讀起來有些拗口，我們通過執行個體觀察下

代碼：

// compiler_intrinsics__ReturnAddress.cpp#include <stdio.h>#include <windows.h>#include <intrin.h>#pragma intrinsic(_ReturnAddress)__declspec(noinline) ULONG_PTR caller( VOID ) { return (ULONG_PTR)_ReturnAddress(); }__declspec(noinline)void noinline_func(void){ void *callerAddress = _ReturnAddress();printf("Return address from %s: %p\n", __FUNCTION__, callerAddress);}__forceinlinevoid inline_func(void){ void *callerAddress = _ReturnAddress();printf("Return address from %s: %p\n", __FUNCTION__, callerAddress);}int main(void){noinline_func(); ULONG_PTR uiLibraryAddress = caller();__asm{nopnopnopnop}inline_func();printf("Return address from %s: %p\n", __FUNCTION__, _ReturnAddress());printf("noinlineaddr = %p, inline_funcaddr = %p,uiLibraryAddress = %p \n",noinline_func,inline_func,uiLibraryAddress);system("pause");return 0;}

程式中函數noinline_func()調用了 ReturnAddress(), ReturnAddress()返回調用函數noinline_func()的下條指令的地址，即001D1483

程式中函數inline_func()調用了 ReturnAddress(), ReturnAddress()返回調用函數inline_func()的下條指令的地址，即001D1494

caller()函數調用了 ReturnAddress()函數，返回地址為caller()下一條指令地址，001D1488

其他同樣。。。。，

運行結果如下：