// expect error: b: already belongs to a container
// spec 6.6
include rt;
struct node { int value; node* prev; node* next; };
fn main() { node* c = rt.new(node); node* a = rt.new(node); node* b = rt.new(node); a.next = b; b.prev = a; c.next = b; rt.put_n(c.value); }
// zc0: skip