skeleton/pid_iter.bpf.c:47:14: error: incomplete definition of type 'struct bpf_perf_link'#define ___arrow3(a, b, c) a->b->cskeleton/pid_iter.bpf.c^~~
skeleton/pid_iter.bp
in sum and read the next record while (item_iter !if (item_iter->isbn() == sum.isbn())
sum += *item_iter++; // add it to sum and read the nextsum = *item_iter++; //