static void stream_int_chk_snd(struct stream_interface *si)
{
	struct channel *ob = si->ob;

	DPRINTF(stderr, "%s: si=%p, si->state=%d ib->flags=%08x ob->flags=%08x\n",
		__FUNCTION__,
		si, si->state, si->ib->flags, si->ob->flags);

	if (unlikely(si->state != SI_ST_EST || (si->ob->flags & CF_SHUTW)))
		return;

	if (!(si->flags & SI_FL_WAIT_DATA) ||        /* not waiting for data */
	    channel_is_empty(ob))           /* called with nothing to send ! */
		return;

	/* Otherwise there are remaining data to be sent in the buffer,
	 * so we tell the handler.
	 */
	si->flags &= ~SI_FL_WAIT_DATA;
	if (!tick_isset(ob->wex))
		ob->wex = tick_add_ifset(now_ms, ob->wto);

	if (!(si->flags & SI_FL_DONT_WAKE) && si->owner)
		task_wakeup(si->owner, TASK_WOKEN_IO);
}

This weakness involves numeric computation errors, such as integer overflows, underflows, or precision losses, which can lead to miscalculations and exploitable behaviors in software.