Question

how do you assign extraction operator to a linked list class.

struct Node{
    int x;
    Node *next;
  }*p;

and here is my function

istream& operator>>(std::istream &is, list &l){
  is>>l;
  return is;
}

and this doesn’t work, it gives me a segmentation error
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x00007fff5f3ffff8
0x000000010000127b in operator>> ()

Answer 1

Your code causes an infinite recursion. It basically says that extracting a list from a std::istream is done by extracting a list from a std::istream.