volatile stack roots

integers.c

int main()
{
009F1000  push        ecx  
	volatile int y;
	volatile int z;
	void* x;
	x = malloc(10);
009F1001  push        0Ah  
009F1003  call        dword ptr [__imp__malloc (9F20A0h)]  
	y = (int)x;
009F1009  mov         dword ptr [esp+4],eax  
	z = (int)x;
009F100D  mov         dword ptr [esp+4],eax  
	return (int)(x);
}
009F1011  add         esp,8  
009F1014  ret  

pointers.c

int main()
{
	volatile void* y;
	volatile void* z;
	void* x;
	x = malloc(10);
00D91000  push        0Ah  
00D91002  call        dword ptr [__imp__malloc (0D920A0h)]  
00D91008  add         esp,4  
	y = x;
	z = x;
	return (int)(x);
}
00D9100B  ret