bug-gzip
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

bug#68329: '--list' fails on multimember files


From: Antonio Diaz Diaz
Subject: bug#68329: '--list' fails on multimember files
Date: Mon, 08 Jan 2024 18:06:39 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i586; en-US; rv:1.9.1.19) Gecko/20110420 SeaMonkey/2.0.14

Dear Paul and Jim,

I have noticed that the new method of implementing --list prints incorrect values for multimember files. It decompresses the whole file, but just counts the uncompressed size of the last member (as it did gzip <= 1.11 by reading the ISIZE field). You can reproduce the problem by concatenating two copies of the gzip-1.13 tarball:

$ gzip -l 2xgzip-1.13.tar.gz
         compressed        uncompressed  ratio uncompressed_name
            2588316             6205440  58.3% 2xgzip-1.13.tar

$ gzip -cd 2xgzip-1.13.tar.gz | wc -c
12410880

I think the problem is that bytes_out is set to zero in lines 791 and 998 of gzip.c so that member length can be checked, but the cumulative value of bytes_out is not saved for later, when the total uncompressed size of the file is displayed by do_list and then added to total_out.

Thanks,
Antonio.





reply via email to

[Prev in Thread] Current Thread [Next in Thread]