From:	CSBVAX::MRGATE!RELAY-INFO-VAX@CRVAX.SRI.COM@SMTP 23-AUG-1988 21:24
To:	ARISIA::EVERHART
Subj:	Stream file bug


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Date:     Tue, 23 Aug 88 07:10 CDT
From:     <KIERSTEI%UMKCVAX1.BITNET@CUNYVM.CUNY.EDU>
Subject:  Stream file bug
To:       info-vax@kl.sri.com
X-Original-To:  info-vax@kl.sri.com, KIERSTEIN

Info-VAXers,

    I posted a letter a while back about having problems with stream files
when porting ARC.  I have found the problem.  In a stream file, if you
seek back to a location in a file, and use fputc to write to the file, and
the writing writes over a block boundary, then the next block is filled
with zeros!

                         (A stream file)
|----------------------------------------------------------------------|(EOF)
         ^         ^         ^         ^         ^         ^         ^
1) seek to here                     $
2) fputc over to next block         xxxxxx
3) zeros are put here                     0000000

^ = disk block boundaries

    I checked with CO Springs, and they confirmed this bug, and also found
that it is fixed in V5.0.

                                         Barry Kierstein
                                         University of Missouri - Kansas City
                                         Kierstei@Umkcvax1.Bitnet