No description
Find a file
Protobuf Team Bot 5be0a43cd6 Avoid NULL pointer dereference in PyUpb_PyToUpbEnum if run with a malformed UTF-8 str (e.g. "\ud800")
Add test coverage of 'assign string to enum-typed field' in general (including this case). This appears to be accepted only Py-upb and not otherwise.

Fixes https://github.com/protocolbuffers/protobuf/issues/27106

PiperOrigin-RevId: 908148411
2026-04-30 07:01:58 -07:00
.bazelci Drop Bazel 7 tests for bazel, python, partially java partially cpp. 2026-01-13 20:11:39 -08:00
.bcr Remove 9.x tests from BCR presubmit until its fully working. 2026-03-20 12:13:18 -07:00
.github Add release branch 35.x 2026-04-22 16:12:18 -07:00
bazel Refactor proto_bzl_test_suite to use a dictionary for test definitions. 2026-04-15 12:58:12 -07:00
benchmarks Set optimization options properly on benchmarks 2026-04-10 09:41:26 -07:00
build_defs Fix arch tests by adding file to the Docker images 2026-03-10 11:06:34 -07:00
ci fix: propagate prefer_prebuilt_protoc flag (#26428) 2026-03-19 10:37:53 -07:00
cmake Auto-generate files after cl/899011425 2026-04-13 15:53:56 +00:00
compatibility add refresh_gencode.sh script to Java smoke tests (#25671) 2026-02-03 19:06:19 -08:00
conformance Conformance performance tests for Recursion Limit on map and message_set_extension 2026-04-10 13:42:56 -07:00
csharp csharp: propagate recursion depth into JsonReplayTokenizer to honor Any nesting limit (#26835) 2026-04-23 11:51:16 -07:00
docs Register new extension range in options.md (#26727) 2026-04-20 11:35:58 -07:00
editions Replace EDITION_UNSTABLE with EDITION_2026 in naming style tests. 2026-04-22 09:42:08 -07:00
editors Update Vim syntax files to support edition keyword (which is weirdly already 2025-10-10 11:07:10 -07:00
examples Fix the prefer_prebuilt_protoc alias to use the correct originally announced location 2026-02-04 14:36:07 -08:00
go go_features: prepare Go-specific optimize_mode 2025-10-03 01:22:29 -07:00
hpb Fixed two GCC-only issues around upb's generated extension registry. 2026-04-27 09:57:29 -07:00
hpb_generator hpb: update null_enum.proto to edition 2024 2026-03-17 13:24:30 -07:00
java Let message parsing reads the in-memory data of CodedInputStream directly instead of parsing from input.readBytes which copies the data. 2026-04-24 13:50:41 -07:00
lua Internal change 2026-03-23 12:46:13 -07:00
objectivec [ObjC] Add DEBUG-only validations to extension values in GPBMessage, along with tests. 2026-04-20 16:11:48 -07:00
patches Add support for bazel 9.x (#26201) 2026-03-04 13:59:16 -08:00
php Auto-generate files after cl/907669612 2026-04-29 17:58:02 +00:00
pkg feat: add initially-empty C# features proto 2026-03-27 00:50:02 -07:00
python Avoid NULL pointer dereference in PyUpb_PyToUpbEnum if run with a malformed UTF-8 str (e.g. "\ud800") 2026-04-30 07:01:58 -07:00
ruby Auto-generate files after cl/907669612 2026-04-29 17:58:02 +00:00
rust Automated Code Change 2026-04-28 21:15:09 -07:00
src Move unlikely present globals to .data.rel.ro.unlikely 2026-04-29 14:36:52 -07:00
third_party Avoid implicit int to bool conversion (#25443) 2026-02-23 09:41:16 -08:00
toolchain Add support for bazel 9.x (#26201) 2026-03-04 13:59:16 -08:00
upb Add a check that extensions do not conflict with known fields. 2026-04-29 06:17:39 -07:00
upb_generator Fixed two GCC-only issues around upb's generated extension registry. 2026-04-27 09:57:29 -07:00
.bazelignore Internal changes 2024-10-17 11:33:01 -07:00
.bazeliskrc Drop Bazel 7 tests for bazel, python, partially java partially cpp. 2026-01-13 20:11:39 -08:00
.bazelrc Add support for bazel 9.x (#26201) 2026-03-04 13:59:16 -08:00
.clang-format Clean up a few stray files that ended up in the wrong place 2023-09-27 09:30:44 -07:00
.gitattributes feat: update bazel central registry publish workflow (#23465) 2025-10-09 09:55:13 -07:00
.gitignore Add a multi-platform Gemfile.lock (#19804) 2025-01-10 19:39:38 -08:00
.gitmodules Internal changes 2024-10-17 11:33:01 -07:00
.readthedocs.yml Automated rollback of commit 4dc164884c. 2024-06-10 16:32:18 -07:00
appveyor.bat CMake: Stop building tests by default (related to #20539) (#24373) 2025-11-13 12:30:47 -08:00
appveyor.yml Upgrade to MSVC 2017 (#10437) 2022-08-22 14:29:12 -07:00
BUILD.bazel feat: add initially-empty C# features proto 2026-03-27 00:50:02 -07:00
CMakeLists.txt Updating version.json and repo version numbers to: 36.0-dev (#26991) 2026-04-20 13:14:04 -07:00
CODE_OF_CONDUCT.md Add a code of conduct based on https://www.contributor-covenant.org/ and https://github.com/carbon-language/carbon-lang/blob/trunk/CODE_OF_CONDUCT.md 2022-12-01 09:29:45 -08:00
CONTRIBUTING.md Add instructions for documentation changes to CONTRIBUTING.md. 2025-07-30 11:02:15 -07:00
CONTRIBUTORS.txt Match service argument names to abstract interface (#9418) 2022-02-03 09:14:44 -08:00
Disable_bundle_install.patch Switch rules_ruby to the supported version from bazel-contrib (#19808) 2025-03-06 13:42:11 -08:00
fix_permissions.sh Set execute bit on files if and only if they begin with (#!). (#7347) 2020-04-01 15:28:25 -07:00
generate_descriptor_proto.sh Release prototype of Protobuf Editions. 2023-06-30 20:18:49 -07:00
global.json Update .NET SDKs to LTS versions 2021-11-10 08:49:53 +13:00
google3_export_generated_files.sh Bump protobuf to latest upb version. 2023-01-14 00:11:12 -08:00
LICENSE Cleanup LICENSE file. 2018-03-26 15:03:41 -07:00
maven_dev_install.json Split maven dependencies into dev vs local (#20549) 2025-03-04 09:44:39 -08:00
maven_install.json Split maven dependencies into dev vs local (#20549) 2025-03-04 09:44:39 -08:00
MODULE.bazel Updating version.json and repo version numbers to: 36.0-dev (#26991) 2026-04-20 13:14:04 -07:00
PrivacyInfo.xcprivacy Add PrivacyInfo.xcprivacy (#15557) 2024-01-25 00:31:38 -08:00
protobuf.bzl Add support for bazel 9.x (#26201) 2026-03-04 13:59:16 -08:00
Protobuf.podspec Updating version.json and repo version numbers to: 36.0-dev (#26991) 2026-04-20 13:14:04 -07:00
protobuf_deps.bzl Update build_bazel_apple_support (#25519) 2026-02-23 09:00:06 -08:00
protobuf_release.bzl Internal change 2024-03-27 05:50:55 -07:00
protobuf_version.bzl Updating version.json and repo version numbers to: 36.0-dev (#26991) 2026-04-20 13:14:04 -07:00
README.md Dropped support for Bazel 7. 2026-02-14 14:50:17 -08:00
regenerate_stale_files.sh Remove upb gencode from upb/cmake/ 2025-02-19 12:38:58 -08:00
SECURITY.md Update bug report and feature templates to be clearer about being on supported versions and filing security issues to VRP 2026-03-16 10:18:13 -07:00
version.json Updating version.json and repo version numbers to: 36.0-dev (#26991) 2026-04-20 13:14:04 -07:00
WORKSPACE Dropped support for Bazel 7. 2026-02-14 14:50:17 -08:00
WORKSPACE.bzlmod Move previous_release dependency out of WORKSPACE.bzlmod and into MODULE.bazel 2025-04-02 11:21:57 -07:00

Protocol Buffers - Google's data interchange format

OpenSSF Scorecard

Copyright 2008 Google LLC

Overview

Protocol Buffers (a.k.a., protobuf) are Google's language-neutral, platform-neutral, extensible mechanism for serializing structured data. You can learn more about it in protobuf's documentation.

This README file contains protobuf installation instructions. To install protobuf, you need to install the protocol compiler (used to compile .proto files) and the protobuf runtime for your chosen programming language.

Working With Protobuf Source Code

Most users will find working from supported releases to be the easiest path.

If you choose to work from the head revision of the main branch your build will occasionally be broken by source-incompatible changes and insufficiently-tested (and therefore broken) behavior.

If you are using C++ or otherwise need to build protobuf from source as a part of your project, you should pin to a release commit on a release branch.

This is because even release branches can experience some instability in between release commits.

Bazel with Bzlmod

Protobuf supports Bzlmod with Bazel 8 +. Users should specify a dependency on protobuf in their MODULE.bazel file as follows.

bazel_dep(name = "protobuf", version = <VERSION>)

Users can optionally override the repo name, such as for compatibility with WORKSPACE.

bazel_dep(name = "protobuf", version = <VERSION>, repo_name = "com_google_protobuf")

Bazel with WORKSPACE

Users can also add the following to their legacy WORKSPACE file.

Note that with the release of 30.x there are a few more load statements to properly set up rules_java and rules_python.

http_archive(
    name = "com_google_protobuf",
    strip_prefix = "protobuf-VERSION",
    sha256 = ...,
    url = ...,
)

load("@com_google_protobuf//:protobuf_deps.bzl", "protobuf_deps")

protobuf_deps()

load("@rules_java//java:rules_java_deps.bzl", "rules_java_dependencies")

rules_java_dependencies()

load("@rules_java//java:repositories.bzl", "rules_java_toolchains")

rules_java_toolchains()

load("@rules_python//python:repositories.bzl", "py_repositories")

py_repositories()

Protobuf Compiler Installation

The protobuf compiler is written in C++. If you are using C++, please follow the C++ Installation Instructions to install protoc along with the C++ runtime.

For non-C++ users, the simplest way to install the protocol compiler is to download a pre-built binary from our GitHub release page.

In the downloads section of each release, you can find pre-built binaries in zip packages: protoc-$VERSION-$PLATFORM.zip. It contains the protoc binary as well as a set of standard .proto files distributed along with protobuf.

If you are looking for an old version that is not available in the release page, check out the Maven repository.

These pre-built binaries are only provided for released versions. If you want to use the github main version at HEAD, or you need to modify protobuf code, or you are using C++, it's recommended to build your own protoc binary from source.

If you would like to build protoc binary from source, see the C++ Installation Instructions.

Protobuf Runtime Installation

Protobuf supports several different programming languages. For each programming language, you can find instructions in the corresponding source directory about how to install protobuf runtime for that specific language:

Language Source
C++ (include C++ runtime and protoc) src
Java java
Python python
Objective-C objectivec
C# csharp
Ruby ruby
Go protocolbuffers/protobuf-go
PHP php
Dart dart-lang/protobuf
JavaScript protocolbuffers/protobuf-javascript

Quick Start

The best way to learn how to use protobuf is to follow the tutorials in our developer guide.

If you want to learn from code examples, take a look at the examples in the examples directory.

Documentation

The complete documentation is available at the Protocol Buffers doc site.

Support Policy

Read about our version support policy to stay current on support timeframes for the language libraries.

Developer Community

To be alerted to upcoming changes in Protocol Buffers and connect with protobuf developers and users, join the Google Group.