Extraction fails with `Unknown filter id 8`

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151 stars (151 stars)

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Description

fn main() {
    let file = std::fs::File::open("/tmp/dump.xz").unwrap();
    lzma_rs::xz_decompress(&mut std::io::BufReader::new(file), &mut std::io::sink()).unwrap();
}

thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: XzError("Unknown filter id 8")', src/main.rs:5:86
stack backtrace:
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

Strms  Blocks   Compressed Uncompressed  Ratio  Check   Filename
    1       1    683.7 KiB  2,048.0 KiB  0.334  None    dum

Contributor guide

Research direction

Identify the meaning of filter id 8 in the XZ format and add support for it in the decoder. Start by examining the LZMA/XZ specification for filter IDs and then trace through the decoding code to determine where to add the new filter.

Tech stack

rust

Domain

backend

Issue type

Bug

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

2

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

1-3 hours

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

Active

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

Clear

Prerequisites

Rust

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

70