I rewrote the mutation testing tool that I created for Bitcoin Core. It was originally written in Python but I got some issues that made me to rewrite it in Rust. It contains the same features as the original tool has: - Generate mutants only for code touched in specific branches (useful for testing PRs) - Skip useless mutants (comments, LogPrintf statements, etc.) - One mutant per line mode for faster analysis - Support for functional and unit test mutation - Coverage-guided mutation testing Check it out:

GitHub

GitHub - brunoerg/bcore-mutation: A mutation testing tool for Bitcoin Core, written in Rust

A mutation testing tool for Bitcoin Core, written in Rust - brunoerg/bcore-mutation

We successfully migrated corecheck to use this new tool recently.

New bugs/inconsistencies found by bitcoinfuzz: panic when parsing a PSBT on btcd, core lightning not validating pub keys in routing hints, overflow on lnd, and more… Check the complete list in the README:

GitHub

GitHub - bitcoinfuzz/bitcoinfuzz: Differential Fuzzing of Bitcoin protocol implementations and libraries

Differential Fuzzing of Bitcoin protocol implementations and libraries - bitcoinfuzz/bitcoinfuzz

Just shilled this PR to the Floresta guys, interesting one!

Bitcoin Core PR Review Club

Separate UTXO set access from validation functions

Notes

Maaaaaany advancements on bitcoinfuzz during these last months, I should write a blog post about it.

People should study more about the fork button on GH and the git cherry-pick command