Public bug reported:
The lzma file can be accessed here:
https://kwafoo.coe.neu.edu/~fangq/share/temp/mat.lzma
This file was created using the public domain lzma C library written by
Igor Pavlov. It can be decompressed on Ubuntu 20.04 using `lzma -d`,
based on LZMA SDK 9.22, but on either Ubuntu 18.04 and 22.04, where lzma
is built based on liblzma, it gives a "Compressed data is corrupted"
error.
here is the log on Ubuntu 20.04 - where LZMA SDK based lzma works
```
fangq@ubuntu20_04:~$ lzma --version
LZMA command line tool 9.22
LZMA SDK 9.22
fangq@ubuntu20_04:~$ lzma -v -d mat.lzma
mat.lzma: 21.83% -- replaced with mat
```
however, on Ubuntu 22.04, lzma -d does not work (same for 18.04)
```
fangq@ubuntu18_04:~$ lzma --version
xz (XZ Utils) 5.2.5
liblzma 5.2.5
fangq@ubuntu22_04$ lzma -v -d mat.lzma
mat.lzma (1/1)
99.9 % 1,500.9 KiB / 1,920.0 KiB = 0.782
lzma: mat.lzma: Compressed data is corrupt
99.9 % 1,500.9 KiB / 1,920.0 KiB = 0.782
```
Because of this, I also noticed that the official lzma module of Python
fails to decompress this file. I want to add that using `lzma` or `lzma-
purejs` npm module, node.js script can correctly decompress this file.
** Affects: xz-utils (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1970762
Title:
liblzma failed to decompress a valid lzma file
Status in xz-utils package in Ubuntu:
New
Bug description:
The lzma file can be accessed here:
https://kwafoo.coe.neu.edu/~fangq/share/temp/mat.lzma
This file was created using the public domain lzma C library written
by Igor Pavlov. It can be decompressed on Ubuntu 20.04 using `lzma
-d`, based on LZMA SDK 9.22, but on either Ubuntu 18.04 and 22.04,
where lzma is built based on liblzma, it gives a "Compressed data is
corrupted" error.
here is the log on Ubuntu 20.04 - where LZMA SDK based lzma works
```
fangq@ubuntu20_04:~$ lzma --version
LZMA command line tool 9.22
LZMA SDK 9.22
fangq@ubuntu20_04:~$ lzma -v -d mat.lzma
mat.lzma: 21.83% -- replaced with mat
```
however, on Ubuntu 22.04, lzma -d does not work (same for 18.04)
```
fangq@ubuntu18_04:~$ lzma --version
xz (XZ Utils) 5.2.5
liblzma 5.2.5
fangq@ubuntu22_04$ lzma -v -d mat.lzma
mat.lzma (1/1)
99.9 % 1,500.9 KiB / 1,920.0 KiB = 0.782
lzma: mat.lzma: Compressed data is corrupt
99.9 % 1,500.9 KiB / 1,920.0 KiB = 0.782
```
Because of this, I also noticed that the official lzma module of
Python fails to decompress this file. I want to add that using `lzma`
or `lzma-purejs` npm module, node.js script can correctly decompress
this file.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xz-utils/+bug/1970762/+subscriptions
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