extern size_t __default_stacksize;
extern size_t __default_guardsize;

int pthread_setattr_default_np(const pthread_attr_t *attrp)
{
        /* Reject anything in the attr object other than stack/guard size. */
        pthread_attr_t tmp = *attrp, zero = { 0 };
        tmp._a_stacksize = 0;
        tmp._a_guardsize = 0;
        if (memcmp(&tmp, &zero, sizeof tmp))
                return EINVAL;

        __inhibit_ptc();
        if (attrp->_a_stacksize >= __default_stacksize)
                __default_stacksize = attrp->_a_stacksize;
        if (attrp->_a_guardsize >= __default_guardsize)
                __default_guardsize = attrp->_a_guardsize;
        __release_ptc();

  int pthread_getattr_default_np(pthread_attr_t *attrp)
{
        __acquire_ptc();
        *attrp = (pthread_attr_t) {
                ._a_stacksize = __default_stacksize,
                ._a_guardsize = __default_guardsize,
        };
        __release_ptc();
        return 0;
}
      return 0;
}