libdd-libunwind-sys 1.0.0

# Vendored: libunwind (Datadog fork)

## Source

- Repository: https://github.com/DataDog/libunwind.git
- Branch: kevin/v1.8.1-custom-2
- Vendored commit: cc1d07281b9e034c9e088733aeb4b94ffd91db9e
- Vendor date: 2026-04-08

## Upstream base

- Upstream tag: v1.8.1 (commit 9cc4d98b22ae57bc1d8c253988feb85d4298a634)
- Upstream repository: https://github.com/libunwind/libunwind

## Datadog-specific commits (v1.8.1..HEAD)

| Commit | Message |
|--------|---------|
| e8e49548 | Copy context before calling slow_backtrace to avoid using a potential modified context |
| cb4b4698 | Revert "Rework register load in aarch64_local_resume()" |
| cc1d0728 | Set image to null when invalid |

To review the diff against upstream v1.8.1, run in a clone of
https://github.com/DataDog/libunwind.git:

```
git diff v1.8.1 cc1d0728 -- src/ include/
```

## Autotools-generated files

The following files were generated by `autoreconf -i` from the source tree at
the commit above and are committed here to eliminate the need for autoconf,
automake, and libtool at build time. They are normally excluded by the upstream
`.gitignore`.

- `configure`
- `aclocal.m4`
- `INSTALL`
- `Makefile.in`, `doc/Makefile.in`, `src/Makefile.in`, `tests/Makefile.in`
- `include/config.h.in`
- `m4/libtool.m4`, `m4/ltoptions.m4`, `m4/ltsugar.m4`, `m4/ltversion.m4`, `m4/lt~obsolete.m4`
- `config/ar-lib`, `config/compile`, `config/config.guess`, `config/config.sub`
- `config/depcomp`, `config/install-sh`, `config/ltmain.sh`, `config/missing`, `config/test-driver`

The `autom4te.cache/` directory is NOT committed (it is a build-system cache only).

## Updating

To update the vendored source:

1. Clone https://github.com/DataDog/libunwind.git and check out the desired commit.
2. Run `autoreconf -i` in the cloned directory.
3. Copy the contents into `libdd-libunwind-sys/libunwind/`, replacing all files.
4. Remove `.git/` and `autom4te.cache/` from the copied tree.
5. Update this file with the new commit hash and date.