res_send.c

		if (*thisanssizp < MAXPACKET
		    /* Yes, we test ANSCP here.  If we have two buffers
		       both will be allocatable.  */
		    && anscp
#ifdef FIONREAD
		    && (ioctl (pfd[0].fd, FIONREAD, thisresplenp) < 0
			|| *thisanssizp < *thisresplenp)
#endif
                    ) {
			u_char *newp = malloc (MAXPACKET);
			if (newp != NULL) {
				*anssizp = MAXPACKET;
				*thisansp = ans = newp;
				if (thisansp == ansp2)
				  *ansp2_malloced = 1;
			}
		}