libc {
  GLIBC_2.2 {
    # XXX
    __vm_deallocate; __mach_port_insert_right; __mach_reply_port;
    __mig_init; __vm_allocate; __mach_port_allocate;

    # functions used in inline functions or macros
    __pthread_spin_destroy; __pthread_spin_init; __pthread_spin_lock;
    _pthread_spin_lock; __pthread_spin_trylock; __pthread_spin_unlock;

    # p*
    pthread_spin_destroy; pthread_spin_init; pthread_spin_lock;
    pthread_spin_trylock; pthread_spin_unlock;
  }
}