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Andreas Kling c66cab7e6b AK: Hide tentative HashTable bucket from iterators across ensure()
HashMap<_, GC::Ref<_>>::ensure() crashed under UBSan whenever the
initialization callback triggered a GC: lookup_for_writing() stamped
the target bucket as used and added it to the ordered list before the
callback ran, so the marking visitor walked the map, read the
uninitialized slot, and failed the returns_nonnull check in GC::Ref.

Split bucket reservation into two phases. lookup_for_writing() now
hands back the target in the Free state (not in the ordered list,
m_size unchanged); callers placement-new the value and then commit via
commit_inserted_bucket(). The Robin Hood displacement loop still
stamps the slot internally and un-stamps before returning, so probing
is unchanged and the whole operation remains a single hash and a
single probe.
2026-04-25 06:21:36 +02:00
.devcontainer Devcontainer: Update vcpkg cache feature for new vcpkg script location 2026-04-23 21:24:41 -06:00
.github CI: Build Gtk UI in Linux Sanitizer presets 2026-04-23 20:07:40 -06:00
AK AK: Hide tentative HashTable bucket from iterators across ensure() 2026-04-25 06:21:36 +02:00
Base/res Base: Format internal Ladybird pages with prettier 2026-04-22 11:22:08 -04:00
Documentation LibWeb/Bindings: Use IDL context to determine 'is platform object' 2026-04-24 20:08:29 +02:00
Libraries LibJS: Only cache TypedArray data pointers for owned buffers 2026-04-25 06:11:18 +02:00
Meta LibWeb+LibIDL: Remove support for #import directives during parsing 2026-04-24 20:08:29 +02:00
Services LibCore: Allow zero-size AnonymousBuffer creation 2026-04-22 09:08:39 -04:00
Tests AK: Hide tentative HashTable bucket from iterators across ensure() 2026-04-25 06:21:36 +02:00
UI LibWebView+UI: Show an error page when we cannot sanitize a URL 2026-04-24 20:17:23 +02:00
Utilities Utilities: Mark unused variable with maybe_unused 2026-04-20 15:45:58 -06:00
.clang-format Meta: Enforce newlines around namespaces 2025-05-14 02:01:59 -06:00
.clang-tidy Meta: Disable clang-tidy's const correctness checks 2025-07-08 11:04:15 -04:00
.clangd Meta: Enable angled brackets in clangd 2026-03-20 19:32:14 +01:00
.editorconfig Meta: Add .editorconfig 2022-09-10 17:32:55 +01:00
.gitattributes LibGfx: Remove support for the various "portable" image formats 2024-06-17 21:57:35 +02:00
.gitignore Meta: Ignore log files 2026-04-23 13:50:01 -04:00
.mailmap Meta: Update my e-mail address everywhere 2024-10-04 13:19:50 +02:00
.pre-commit-config.yaml Meta: Replace deprecated pre-commit stage name 2024-10-18 09:40:59 +02:00
.prettierignore Tests: Exclude JS AST and bytecode tests from prettier checks 2026-02-19 02:45:37 +01:00
.prettierrc Meta: Increase the line length enforced by prettier to 120 2025-10-31 19:55:50 -04:00
.ycm_extra_conf.py Meta: Sort all python imports 2025-06-09 11:25:14 -04:00
Cargo.lock LibJS+LibUnicode: Use LibUnicode as appropriate for lexing JavaScript 2026-04-19 10:39:26 +02:00
Cargo.toml LibGfx: Implement YUV->RGBA color conversion for CPU painting 2026-04-18 01:25:00 -05:00
CMakeLists.txt Meta: Move linter helpers to a subdirectory 2026-04-23 07:31:19 -04:00
CMakePresets.json CMake+CI: Use the same preset names on every platform 2026-01-17 12:18:46 -07:00
CODE_OF_CONDUCT.md Meta: Add code of conduct (from the Ruby community) 2024-10-02 09:49:52 +02:00
CONTRIBUTING.md Meta: Disallow PR descriptions entirely generated by AI 2026-04-05 16:17:29 +02:00
ISSUES.md Everywhere: Document use of ladybird.py over ladybird.sh 2025-05-29 16:24:17 -04:00
LICENSE Meta: Update license year 2025-02-10 11:40:57 +00:00
pyproject.toml Meta: Use "extend-select" to enable non-default python linters 2025-06-09 17:49:35 -04:00
README.md Libraries: Remove LibArchive 2024-11-25 13:37:45 +01:00
rust-toolchain.toml Meta: Pin Rust toolchain version 2026-04-16 23:42:22 +02:00
rustfmt.toml Rust: Add a config file for rustfmt 2026-04-18 08:05:47 -04:00
SECURITY.md Documentation: Make updates to align better with new issue template 2024-10-31 09:18:08 +01:00
vcpkg-configuration.json Meta: Add overlay port for vulkan-loader 2024-07-07 15:56:59 +02:00
vcpkg.json Meta: Pin highway version 1.4.0 2026-04-23 20:33:08 -06:00

Ladybird

Ladybird is a truly independent web browser, using a novel engine based on web standards.

Important

Ladybird is in a pre-alpha state, and only suitable for use by developers

Features

We aim to build a complete, usable browser for the modern web.

Ladybird uses a multi-process architecture with a main UI process, several WebContent renderer processes, an ImageDecoder process, and a RequestServer process.

Image decoding and network connections are done out of process to be more robust against malicious content. Each tab has its own renderer process, which is sandboxed from the rest of the system.

At the moment, many core library support components are inherited from SerenityOS:

  • LibWeb: Web rendering engine
  • LibJS: JavaScript engine
  • LibWasm: WebAssembly implementation
  • LibCrypto/LibTLS: Cryptography primitives and Transport Layer Security
  • LibHTTP: HTTP/1.1 client
  • LibGfx: 2D Graphics Library, Image Decoding and Rendering
  • LibUnicode: Unicode and locale support
  • LibMedia: Audio and video playback
  • LibCore: Event loop, OS abstraction layer
  • LibIPC: Inter-process communication

How do I build and run this?

See build instructions for information on how to build Ladybird.

Ladybird runs on Linux, macOS, Windows (with WSL2), and many other *Nixes.

How do I read the documentation?

Code-related documentation can be found in the documentation folder.

Get in touch and participate!

Join our Discord server to participate in development discussion.

Please read Getting started contributing if you plan to contribute to Ladybird for the first time.

Before opening an issue, please see the issue policy and the detailed issue-reporting guidelines.

The full contribution guidelines can be found in CONTRIBUTING.md.

License

Ladybird is licensed under a 2-clause BSD license.