anything wrong when call Thread::do_ipc?

hi. in the Thread_object::invoke, it call Thread::do_ipc like this: ct->do_ipc(f->tag(), partner, partner, have_rcv, sender, f->timeout(), f, rights); the second parameter's type is Thread*. but the Thread::do_ipc's implemention is like this: Thread::do_ipc(L4_msg_tag const &tag, bool have_send, Thread *partner, bool have_receive, Sender *sender, L4_timeout_pair t, Syscall_frame *regs, L4_fpage::Rights rights) {...} the second parameter's type is bool. is there anything wrong with the code, or i have make some mistakes?