[debbugs-tracker] bug#16699: closed (gzip -l bug)

[GNU bug Tracking System]

Your message dated Sun, 9 Feb 2014 08:11:26 -0800
with message-id <address@hidden>
and subject line Re: bug#16699: gzip -l bug
has caused the debbugs.gnu.org bug report #16699,
regarding gzip -l bug
to be marked as done.

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-- 
16699: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=16699
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--- Begin Message --- Subject: gzip -l bug Date: Sat, 8 Feb 2014 20:46:27 -0600

A fairly obvious bug with the list (-l) option of gunzip.  In this case, “grandma-new.img” is approximately 320 gigabytes.  Compressed down to 46gb.  “Uncompressed”, and “ratio” are wrong. 

 

 

 

address@hidden:/Virt# gunzip -V

gzip 1.6

Copyright (C) 2007, 2010, 2011 Free Software Foundation, Inc.

Copyright (C) 1993 Jean-loup Gailly.

This is free software.  You may redistribute copies of it under the terms of

the GNU General Public License <http://www.gnu.org/licenses/gpl.html>.

There is NO WARRANTY, to the extent permitted by law.

 

Written by Jean-loup Gailly.

address@hidden:/Virt# gunzip -l /video1/grandma-new.img.gz

         compressed        uncompressed  ratio uncompressed_name

        46492229886          2245353472 -1970.6% /video1/grandma-new.img

address@hidden:/Virt#

--- End Message ---

> --- Begin Message ---
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> Subject: 
>
> Re: bug#16699: gzip -l bug
>
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>
>
> Date: 
>
> Sun, 9 Feb 2014 08:11:26 -0800
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>
> On Sat, Feb 8, 2014 at 7:58 PM, Paul Eggert <address@hidden> wrote:
> > It's a known problem, inherent to the gzip format (which stores only the
> > last 32 bits of the uncompressed size).  Fixing it would require changing
> > the format, which is unlikely at this point.
>
> Thanks for the report Chris and for explaining, Paul.
> I'm marking this issue as done (via the -done address Cc'd above).
>
>
> --- End Message ---