unable to quickly decompress from an archive created with -9 -f 3.0

[goblin]

With pixz 1.0.2-2 from Debian, running pixz -x files/file00309491 -i files.tpxz9 results with "Index and archive differ as to next file: files/file00309491 vs files/file00246065".

files.tpxz9 was created with pixz -9 -f 3.0 files.tar files.tpxz9 and is available at the following
magnet link:

magnet:?xl=136933688&dn=files.tpxz9&xt=urn:btih:utilil77ywy4hwmd2r5slxpwkfuy3bo2&tr=udp://tracker.openbittorrent.com:80&tr=udp://open.demonii.com:1337&tr=udp://tracker.coppersurfer.tk:6969&tr=udp://tracker.leechers-paradise.org:6969

(131MB) (sha256 = 2a1cd58008bd527e5d6b8256de796e8368019c2877ed4548afc163d4ede9e614) (more info on it below)

Freshly compiled pixz from git master (936d806) with debug enabled outputs this instead:

$ ~/git/pixz/I/bin/pixz -x files/file00309491 -i ../files.tpxz9
want: files/file00309491
read: skip 1
read: skip 2
read: skip 3
read: skip 4
read: want 5
tar want: files/file00309491
tar off = 185420288, size = 18446744073525179904
(null)
Error reading archive entry
$ 

Slow decompression of the whole tar archive and then instructing tar to output the file seems to work OK.

files.tar was created from a Wikimedia dump at https://dumps.wikimedia.org/simplewiki/20160203/simplewiki-20160203-pages-meta-current.xml.bz2 with this command line:

$ mkdir files
$ bzcat ../simplewiki-20160203-pages-meta-current.xml.bz2 | ../splitter.pl <(bzgrep -b '<page>' ../simplewiki-20160203-pages-meta-current.xml.bz2  | sed -e 's/: .*$//')
$ tar cf files.tar files

The splitter.pl script is as below:

#! /usr/bin/perl

use strict;
use warnings;

my $splitf;
open $splitf, "<", $ARGV[0];

my $cnt = 0;
my $filecnt = 0;
my $done = 0;
my $buf;

while(!$done) {
        my $mark = <$splitf>;
        if($mark) {
                my $len = read(STDIN, $buf, $mark - $cnt);
                my $outf;
                open $outf, ">", sprintf("file%08d", $filecnt++);
                print $outf $buf;
                close $outf;
                $cnt += $len;
        } else {
                $done = 1;
        }
}

[goblin]

The original file was created with debian's version of pixz, but compressing with latest git master results in identical files.tpxz9

[goblin]

Sorry, this looks like a duplicate of #13 , I somehow missed it on my first search.