_0 a ={
void* 0,
(__Block_byref_a_a *)&a,
0,
sizeof(__Block_byref_a_0),
10};
__...main_block_impl_0(func_0,&DATA,&a,570425344);
}
struct __Block_byref_a_0{
void *isa;
__Block_byref_a...*a;
__main_block_impl_0(*fp,*desc,__Block_byref_a_0 *_a,flags ):a(a->__forwarding){
impl.isa...修饰的变量
*dest = _Block_byref_copy(object)
QQ截图20201215071532.png
}
}
_block_byref_copy..._block_byref_copy(*arg){
struct Block_byref *src = (struct Block_byref *) arg;三层拷贝
struct Block_byref