Protocol Buffers v25.0-rc1
Pre-release
Pre-release
Announcements
- Protobuf News may include additional announcements or pre-announcements for upcoming changes.
Compiler
- Implement proto2/proto3 with editions (3813b66)
- Defines Protobuf compiler version strings as macros and separates out suffix string definition. (3c59585)
- Add utf8_validation feature back to the global feature set. (153028d)
- Setting up version updater to prepare for poison pills and embedding version info into C++, Python and Java gencode. (4322e00)
- Merge the protobuf and upb Bazel repos (7286ffc)
- Editions: Introduce functionality to protoc for generating edition feature set defaults. (4019e25)
- Editions: Migrate edition strings to enum in C++ code. (f083ebf)
- Create a reflection helper for ExtensionIdentifier. (4d5ab73)
- Editions: Provide an API for C++ generators to specify their features. (e897bcf)
- Editions: Refactor feature resolution to use an intermediate message. (57d8049)
- Publish extension declarations with declaration verifications. (e72b0e1)
- Editions: Stop propagating partially resolved feature sets to plugins. (b66ef4c)
- Editions: Migrate string_field_validation to a C++ feature (1f95830)
- Editions: Include defaults for any features in the generated pool. (15863ff)
- Protoc: parser rejects explicit use of map_entry option (#13479) (8f59292)
- Protoc: validate that reserved range start is before end (#13474) (3be00f7)
- Protoc: support identifiers as reserved names in addition to string literals (only in editions) (#13471) (e701f4f)
- Drop support for Bazel 5. (a80daa2)
- Allow code generators to specify whether or not they support editions. (2176a14)
C++
- Apply PROTOBUF_NOINLINE to declarations of some functions that want it. (6e848b0)
- Implement proto2/proto3 with editions (3813b66)
- Make JSON UTF-8 boundary check inclusive of the largest possible UTF-8 character. (e80b8ec)
- Reduce
Map::size_type
to 32-bits. Protobuf containers can't have more than (95d2b2e) - Defines Protobuf compiler version strings as macros and separates out suffix string definition. (3c59585)
- Add
ABSL_ATTRIBUTE_LIFETIME_BOUND
attribute on generated oneof accessors. (e33e0d2) - Fix bug in reflection based Swap of map fields. (bef5b75)
- Add utf8_validation feature back to the global feature set. (153028d)
- Setting up version updater to prepare for poison pills and embedding version info into C++, Python and Java gencode. (4322e00)
- Add prefetching to arena allocations. (fbdeb5a)
- Merge the protobuf and upb Bazel repos (7286ffc)
- Add
ABSL_ATTRIBUTE_LIFETIME_BOUND
attribute on generated repeated and map field accessors. (9a0a3cf) - Editions: Migrate edition strings to enum in C++ code. (f083ebf)
- Workaround ICE on gcc 7.5 by not having one overload call the other one with a (0522054)
- Create a reflection helper for ExtensionIdentifier. (4d5ab73)
- Editions: Provide an API for C++ generators to specify their features. (e897bcf)
- Add
ABSL_ATTRIBUTE_LIFETIME_BOUND
attribute on generated string field accessors. (18c338a) - Editions: Refactor feature resolution to use an intermediate message. (57d8049)
- Fixes for 32-bit MSVC. (66cf6b1)
- Publish extension declarations with declaration verifications. (e72b0e1)
- Export the constants in protobuf's any.h to support DLL builds. (fd24b1b)
- Implement AbslStringify for the Descriptor family of types. (230232a)
- Add
ABSL_ATTRIBUTE_LIFETIME_BOUND
attribute on generated message field accessors. (064035c) - Editions: Stop propagating partially resolved feature sets to plugins. (b66ef4c)
- Editions: Migrate string_field_validation to a C++ feature (1f95830)
- Editions: Include defaults for any features in the generated pool. (15863ff)
- Introduce C++ feature for UTF8 validation. (c7119e6)
- Protoc: validate that reserved range start is before end (#13474) (3be00f7)
- Remove option to disable the table-driven parser in protoc. (6d03f9b)
- Lock down ctype=CORD in proto file. (b359e50)
- Support split repeated fields. (5b5e5bf)
- In OSS mode omit some extern template specializations. We have seen reports of (ab96824)
- Automated rollback of commit adb2c4b. (0ea0052)
- Allow code generators to specify whether or not they support editions. (2176a14)
- Handle conflicting macros for FreeBSD (#13303) (2a95295)
Java
- Implement proto2/proto3 with editions (3813b66)
- Remove synthetic oneofs from Java gencode field accessor tables. (9ad2268)
- Timestamps.parse: Add error handling for invalid hours/minutes in the timezone offset. (8f85138)
- Defines Protobuf compiler version strings as macros and separates out suffix string definition. (3c59585)
- Add
ABSL_ATTRIBUTE_LIFETIME_BOUND
attribute on generated oneof accessors. (e33e0d2) - Automated rollback of commit 2a55706. (30b6251)
- Add missing debugging version info to Protobuf Java gencode when multiple files are generated. (301dfc5)
- Fix a bad cast in putBuilderIfAbsent when already present due to using the result of put() directly (which is null if it currently has no value) (785c82d)
- Setting up version updater to prepare for poison pills and embedding version info into C++, Python and Java gencode. (4322e00)
- Fix a NPE in putBuilderIfAbsent due to using the result of put() directly (which is null if it currently has no value) (47cec39)
- Update Kotlin compiler to escape package names (#13310) (437ec35)
- Add MapFieldBuilder and change codegen to generate it and the put{field}BuilderIfAbsent method. (955d4ab)
- Introduce recursion limit in Java text format parsing (bca3bed)
- Consider the protobuf.Any invalid if typeUrl.split("/") returns an empty array. (004f54a)
- Mark
FieldDescriptor.hasOptionalKeyword()
as deprecated. (d6157f7)
Kotlin
- Add ByteString.isNotEmpty Kotlin extension function. (961779e)
Csharp
- Add C# deterministic serialization (#13160) (96100bf)
- Add .NET debugging attributes (#14097) (67b9c76)
- Improve .NET debugging of Protobuf messages (#13838) (e519c62)
- Lock down ctype=CORD in proto file. (b359e50)
Objective-C
- Merge the protobuf and upb Bazel repos (7286ffc)
- [ObjC] Flip the default for two generation options. (08bbb57)
- [ObjC] Enable generation of .proto files using editions. (55ab831)
- [ObjC] add "generate_minimal_imports" generation option (0b817d4)
- [ObjC] Add generation control for descriptor custom options. (bd9d689)
- Lock down ctype=CORD in proto file. (b359e50)
Rust
- Merge the protobuf and upb Bazel repos (7286ffc)
Python
- Loosen upb for json name conflict check in proto2 between json name and field (41af1d5)
- Defines Protobuf compiler version strings as macros and separates out suffix string definition. (3c59585)
- Add
ABSL_ATTRIBUTE_LIFETIME_BOUND
attribute on generated oneof accessors. (e33e0d2) - Ensure Timestamp.ToDatetime(tz) has correct offset (f0c56f9)
- Do not check required field for upb python MergeFrom (1e0bc56)
- Setting up version updater to prepare for poison pills and embedding version info into C++, Python and Java gencode. (4322e00)
- Merge the protobuf and upb Bazel repos (7286ffc)
- Comparing a proto message with an object of unknown returns NotImplemented (12d4f41)
- Emit slots in pyi output as a tuple rather than a list for --pyi_out. (4a4f615)
- Fix a bug that strips options from descriptor.proto in Python. (27d42c5)
- Raise warings for message.UnknownFields() usages and navigate to the new add (c988759)
- Add protobuf python keyword support in path for stub generator. Also added tests for (4cc258a)
- Add tuple support to set Struct (533fbbb)
Python C-Extension (Default)
- Comparing a proto message with an object of unknown returns NotImplemented (protocolbuffers/upb@243add4)
- See also UPB changes below, which may affect Python C-Extension (Default).
PHP
- Merge the protobuf and upb Bazel repos (7286ffc)
Ruby
Ruby C-Extension
- Merge the protobuf and upb Bazel repos (7286ffc)
- Ruby: Fix object cache lookups on 32-bit platforms (#13494) (055c378)
- Ruby FFI implementation (#13343) (c52d80c)
- See also UPB changes below, which may affect Ruby C-Extension.
UPB (Python/PHP/Ruby C-Extension)
- Loosen upb for json name conflict check in proto2 between json name and field (41af1d5)
- Add utf8_validation feature back to the global feature set. (153028d)
- Do not check required field for upb python MergeFrom (1e0bc56)
- Merge the protobuf and upb Bazel repos (7286ffc)
- Cherry-pick recent changes from the upb repo (#13908) (b2e39c1)
- Added malloc_trim() calls to Python allocator so RSS will decrease when memory is freed (56e9f2b)
- Upb: fix a Python memory leak in ByteSize() (e45a6d5)
- Support ASAN detection on clang (#1424) (protocolbuffers/upb@1b0011d)
- Upb: bugfix for importing a proto3 enum from within a proto2 file (protocolbuffers/upb@b19edc5)
- Expose methods needed by Ruby FFI using UPB_API (#1391) (protocolbuffers/upb@01fed1c)
- Fix
PyUpb_Message_MergeInternal
segfault (#1338) (protocolbuffers/upb@cefa206)