Hello, This bug is just a reminder (it's not a request to update byacc), if in future you will want to update byacc. On http://invisible-island.net/byacc/ (other URL if the first one will not work: http://dickey.his.com/byacc/) you will find modified version of byacc to conform to ANSI C + some other improvements. Thomas Dickey has modified original byacc.1.9.tar.Z written by Robert Corbett (file can be downloaded from ftp://ftp.cs.berkeley.edu/ucb/4bsd/). Fedora contain verions from FreeBSD's CVS wich has some cosmetic changes.