Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!linus!decvax!cca!ima!inmet!root From: root@inmet.UUCP Newsgroups: net.notes Subject: bug in 'buildmap' - (nf) Message-ID: <1720@inmet.UUCP> Date: Wed, 10-Oct-84 00:47:27 EDT Article-I.D.: inmet.1720 Posted: Wed Oct 10 00:47:27 1984 Date-Received: Fri, 12-Oct-84 03:49:11 EDT Lines: 20 #N:inmet:7400003:000:615 inmet!root Oct 9 00:03:00 1984 Users of Jeff Donnely's "buildmap" program -- you're in for some trouble with the latest usenet map -- it contains a one-letter name which causes the hash function in lookup() to screw up: len = strlen (sys_name); hash = (sys_name[0] - '0'); hash = hash * 75 + (sys_name[1] - '0'); hash = hash * 75 + (sys_name[len-1] -'0'); /* Notice that this one reaches into nowhere if len < 2 -- nrh */ hash = hash * 75 + (sys_name[len-2] - '0'); The fix is to test to be sure that len > 1 before using a value like sys_name[len -2]. Sometimes, ada'd be better.... Nat Howard inmet!nrh