bug#30935: closed (gzip -l reports wrong size for decompressed files larger than 4GB)

[GNU bug Tracking System]

Your message dated Wed, 15 Dec 2021 18:33:12 -0800
with message-id <b546014b-f19b-8025-cd7b-2266676b41d9@cs.ucla.edu>
and subject line Re: bug#17804: RFC: fixing the 32-bit size and time limits in 
gzip file format
has caused the debbugs.gnu.org bug report #17804,
regarding gzip -l reports wrong size for decompressed files larger than 4GB
to be marked as done.

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-- 
17804: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=17804
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> --- Begin Message ---
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> Subject: 
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> gzip -l reports wrong size for decompressed files larger than 4GB
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> Date: 
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> Sun, 25 Mar 2018 10:42:42 +0200
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> User-agent: 
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> Mozilla/5.0 (X11; Linux x86_64; rv:49.0) Gecko/20100101 Firefox/49.0 SeaMonkey/2.46
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> Hello!
>
> I am using gzip 1.6 from openSUSE Leap 42.3 with latest patches
>
> $ file /usr/bin/gzip
> /usr/bin/gzip: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter 
> /lib64/ld-linux-x86-64.so.2, for GNU/Linux 3.0.0, BuildID[sha1]=7103d56e17e6f81a52db927e393dce601c3af0e1, stripped
>
> There is a compressed file available at https://data.dnb.de/opendata/GND.rdf.gz which has a size of 1.232.465.678 bytes. 
> Uncompressed it will have a size of 19.465.374.298
>
> The problem is:
> $ gzip -l GND.rdf.gz
>          compressed        uncompressed  ratio uncompressed_name
>          1232465678          2285505114  46.1% GND.rdf
>
> This number 2285505114 is actually the lower 32 bits of the real size 19GB.
> $ echo "19465374298-16*1024*1024*1024" | bc
> 2285505114
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> Such a behaviour is okay for 32-bit software, 64-bit should show correct 
> numbers.
>
> Thanks
> Wolfgang
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> --- End Message ---
> --- Begin Message ---
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>
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> Subject: 
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> Re: bug#17804: RFC: fixing the 32-bit size and time limits in gzip file format
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> Date: 
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> Wed, 15 Dec 2021 18:33:12 -0800
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> User-agent: 
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> Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.3.1
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> On 6/18/14 15:12, Paul Eggert wrote:
> > One simple way forward would be to implement what pigz -tl does, namely, 
> > decompress the input stream and discard the output, but print its size.
>
> I finally got around to implementing that suggestion:
>
> https://git.savannah.gnu.org/cgit/gzip.git/commit/?id=cf26200380585019e927fe3cf5c0ecb7c8b3ef14
> https://git.savannah.gnu.org/cgit/gzip.git/commit/?id=32fef43b442c7abc70414863d64718cd06f6477a
>
> So I am closing this old bug report.
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>
> --- End Message ---