focal-security: thread 'main' panicked at 'attempted to zero-initialize type `libgit2_sys::git_diff_options`

[Paride Legovini]

The 0.12.1-1ubuntu0.1 security upload caused a regression in Focal: the tool is not unusable from within git repositories. Reproducer:

1. `lxc launch ubuntu:focal paride-f` and jump in container
2. apt install bat
3. mkdir x; cd x; git init; touch a
4. batcat a

Relevant output

$ batcat a
thread 'main' panicked at 'attempted to zero-initialize type `libgit2_sys::git_diff_options`, which is invalid', /usr/share/cargo/registry/bat-0.12.1/debian/cargo_registry/git2-0.8.0/src/diff.rs:451:27
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

This entry from d/changelog is likely the culprit:

  * debian/patches/downgrade-dep-version.patch: Relax git2
    and syntect version requirement.

Ubuntu >= Jammy releases are not affected.

[Paride Legovini (paride)]

There is an upstream bug on this issue:

  https://github.com/sharkdp/bat/issues/2317

but I'm not adding making Launchpad track it as this is actually specific to Ubuntu.

[Launchpad Janitor (janitor)]

This bug was fixed in the package rust-bat - 0.12.1-1ubuntu0.2

---------------
rust-bat (0.12.1-1ubuntu0.2) focal-security; urgency=medium

  * SECURITY REGRESSION: no-change rebuild to include fix from
    git2. (LP: #1995868)

 -- David Fernandez Gonzalez <email address hidden> Tue, 08 Nov 2022 12:22:04 +0100