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Date:      Tue, 8 Dec 1998 13:50:30 -0500 (EST)
From:      curt@kcwc.com
To:        FreeBSD-gnats-submit@FreeBSD.ORG
Cc:        curt@kcwc.com
Subject:   bin/9016: od/hexdump bug with small zero filled files
Message-ID:  <199812081850.NAA01103@NewsReader.Com>

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>Number:         9016
>Category:       bin
>Synopsis:       od/hexdump bug with small zero filled files
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:
>Keywords:
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Dec  8 11:00:00 PST 1998
>Last-Modified:
>Originator:     Curt Welch
>Organization:
KCW Consulting
>Release:        FreeBSD 2.2-970903-RELENG i386
>Environment:

	Bug is in 3.0-19981103-SNAP also

>Description:

	When you do an od/hexdump on a small file with less then 16 bytes of
	data all of zero value, it produces bogus output.  It prints a signle
	star showing multiple repeated lines of the same data but it never
	printed the first line of output like it should have.

	Old versions of Unix od never worked that way.

>How-To-Repeat:

	dd if=/dev/zero of=x bs=1 count=10
	od x

as in:

% dd if=/dev/zero of=x bs=1 count=10
10+0 records in
10+0 records out
10 bytes transferred in 0.000486 secs (20575 bytes/sec)
% od x
*

>Fix:
	
	Haven't looked at the source...

>Audit-Trail:
>Unformatted:

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