Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!linus!decvax!genrad!mit-eddie!godot!ima!ISM780B!jim
From: jim@ISM780B.UUCP
Newsgroups: net.bugs.usg
Subject: Re: Bug in USG 5.2 stdio package.
Message-ID: <1@ISM780B.UUCP>
Date: Sat, 3-Nov-84 12:24:06 EST
Article-I.D.: ISM780B.1
Posted: Sat Nov  3 12:24:06 1984
Date-Received: Sun, 4-Nov-84 04:42:44 EST
Lines: 5
Nf-ID: #R:asgb:-55600:ISM780B:29800003:000:258
Nf-From: ISM780B!jim    Nov  2 13:52:00 1984

><stdio> usually requires an fseek() when switching between read <--> write
>modes on a file opened in any of the "+" modes.  This is to insure that the
>buffer pointers are set up properly.

The manual says fseek isn't necessary of EOF is reached on input.