chore(deps): update dependency protoc to v29 - autoclosed

[renovate]

This PR contains the following updates:

Package	Update	Change
protoc	major	25.1 -> 29.3

---

Release Notes

protocolbuffers/protobuf (protoc)

v29.3: Protocol Buffers v29.3

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Announcements

• Protobuf News may include additional announcements or pre-announcements for upcoming changes.

C++

• Fix cmake installation location of java and go features (#​19773) (protocolbuffers/protobuf@1dc5842)

Other

• Add .bazeliskrc for protobuf repo to tell bazelisk to use 7.1.2 by default. (#​19884) (protocolbuffers/protobuf@9a5d2c3)
• Update artifact actions to v4 (#​19703) (protocolbuffers/protobuf@8e7e6b0)

v29.2: Protocol Buffers v29.2

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Announcements

• Protobuf News may include additional announcements or pre-announcements for upcoming changes.

C++

• Automated rollback of commit 23aada2. (#​19692) (protocolbuffers/protobuf@1772657)
• Remove unused / invalid C++ lazy repeated field code from OSS. (#​19682) (protocolbuffers/protobuf@3649f87)

Java

• Automated rollback of commit 23aada2. (#​19692) (protocolbuffers/protobuf@1772657)

Other

• Export environment variables so bazelisk picks them up (#​19690) (protocolbuffers/protobuf@8b9d76c)
• Pin staleness check to Bazel 7 (#​19689) (protocolbuffers/protobuf@a1c9b6a)
• Remove CMake downgrade workaround from Windows CI tests (#​19630) (protocolbuffers/protobuf@3a7bb4a)

v29.1: Protocol Buffers v29.1

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Announcements

• Protobuf News may include additional announcements or pre-announcements for upcoming changes.

Java

• Rename maven to protobuf_maven in MODULE.bazel (#​18641) (#​19477) (protocolbuffers/protobuf@ba6da44)

Kotlin

• Rename maven to protobuf_maven in MODULE.bazel (#​18641) (#​19477) (protocolbuffers/protobuf@ba6da44)

Python

• Revert "Remove deprecated service.py usages from test". For 29.x only (#​19434) (protocolbuffers/protobuf@5864b50)

v29.0: Protocol Buffers v29.0

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Announcements

• Protobuf News may include additional announcements or pre-announcements for upcoming changes.

Bazel

• Add missing line to docstring after Args (#​19213) (protocolbuffers/protobuf@6f310d5)
• Fix proto_info_bzl (#​18918) (protocolbuffers/protobuf@083de5f)
• Use rules_cc everywhere in protobuf (protocolbuffers/protobuf@ddadd0b)
• Upgrade rules_cc to 0.0.13 (protocolbuffers/protobuf@3dd4835)
• Convert proto toolchain string to Label (protocolbuffers/protobuf@aa181e2)
• Prepare supporting targets for testing (protocolbuffers/protobuf@a748b10)
• Support --incompatible_enable_proto_toolchain_resolution (protocolbuffers/protobuf@372ddb3)
• Move ProtoInfo and ProtoLangToolchainInfo from Bazel (protocolbuffers/protobuf@426ca8a)
• Move java_{lite_}proto_library from Bazel repository (protocolbuffers/protobuf@d77bdac)
• Move proto_toolchain from rules_proto to protobuf (protocolbuffers/protobuf@9f9cb7a)
• Move proto_library from Bazel repository (protocolbuffers/protobuf@3ff2cf0)
• Move proto_common implementation from Bazel binary (protocolbuffers/protobuf@b19fbe6)

Compiler

• Begin adding extension numbers to SourceCodeInfo and FileDescriptorSet for tooling purposes. (protocolbuffers/protobuf@07e489d)
• Update protoc release to include editions language features proto for Go (#​19013) (protocolbuffers/protobuf@63d966b)
• Introduce lifetimes for individual feature values. (protocolbuffers/protobuf@0b6e768)
• Windows - Fix handling of utf8 command line arguments (#​17854) (protocolbuffers/protobuf@b9d1800)
• Limit feature deprecation warnings to reduce noise. (protocolbuffers/protobuf@5cd9a46)

C++

• Fix C++ ifndef_guard printer to also convert "-" to "_". (protocolbuffers/protobuf@7331b77)
• Fix C++ codegen namespace printer to print closing namespaces in reverse order. (protocolbuffers/protobuf@3bf9c40)
• Fix raw_ptr.cc on exotic architectures (#​18193) (protocolbuffers/protobuf@63f6262)
• Fix cord handling in DynamicMessage and oneofs. (protocolbuffers/protobuf@9e8b30c)
• Fix packed reflection handling bug in edition 2023. (protocolbuffers/protobuf@4c92328)
• Add JsonStreamToMessage method (protocolbuffers/protobuf@0259cc3)
• Introduce lifetimes for individual feature values. (protocolbuffers/protobuf@0b6e768)
• Insert software prefetches into merge functions. This improves performance when hardware prefetchers are disabled on AMD machines. (protocolbuffers/protobuf@d993365)
• Insert software prefetches into proto parsing functions. This improves performance when hardware prefetchers are disabled on AMD platforms. (protocolbuffers/protobuf@8aa0add)
• Add prefetching of subsequent extensions in ExtensionSet::ForEach. (protocolbuffers/protobuf@9b019ee)
• Remove the AnyMetadata class and use free functions instead. (protocolbuffers/protobuf@920d5c3)
• Add [[deprecated]] attribute when generating enums and classes. (protocolbuffers/protobuf@23aada2)
• Use linear search instead of binary search in flat mode of ExtensionSet. (protocolbuffers/protobuf@0ed61f0)
• Prepare MessageLite::GetTypeName to be upgraded to return (protocolbuffers/protobuf@30a8ef5)
• Limit feature deprecation warnings to reduce noise. (protocolbuffers/protobuf@5cd9a46)
• Add Compiler Condition to use inline assembly optimizations with ARM64 for Compatibility with MSVC (#​17671) (protocolbuffers/protobuf@c5f6231)
• Enable small object optimization (SOO) for RepeatedField in order to reduce data indirections. (protocolbuffers/protobuf@e2525e6)
• Return backing array memory to arena in ExtensionSet. (protocolbuffers/protobuf@5ac8ee1)
• In edition 2024, Enum_Name(value) functions return absl::string_view by default. (protocolbuffers/protobuf@e3fa6aa)
• Add Prefetchers to Proto Copy Construct to help address load misses (protocolbuffers/protobuf@cdb7238)
• Reduced nesting in GenerateByteSize: slight readability improvements in generated code. (protocolbuffers/protobuf@162a740)
• Introduce FieldDescriptor::cpp_string_type() API to replace direct ctype inspection which will be removed in the next breaking change (protocolbuffers/protobuf@d0e49df)
• Update the comment of TextFormat::Printer::RegisterMessagePrinter that the method takes ownerhip of the printer pointer. (protocolbuffers/protobuf@d911161)
• Prepare the code for migrating return types from const std::string& to (protocolbuffers/protobuf@e13b8e9)

Java

• Remove deprecation warnings for Timestamp and Duration add/subtract/between that we do not yet have alternatives to. (protocolbuffers/protobuf@f606c13)
• [29.x] Add missing java load (#​19016) (protocolbuffers/protobuf@bb287be)
• Give Kotlin jars an OSGi Manifest (#​18812) (protocolbuffers/protobuf@0c51eba)
• Re-export includingDefaultValueFields in deprecated state for important Cloud customer. (protocolbuffers/protobuf@7321b2f)
• Restore compatibility with 3.22 gencode by re-adding mutableCopy helpers (protocolbuffers/protobuf@1b1e90b)
• Speed up CodedOutputStream by extracting rarely-executed string formatting code (protocolbuffers/protobuf@f8f5136)
• Return constant Value objects for true, false, and "" (protocolbuffers/protobuf@4fbb0c5)
• Optimise CodedOutputStream.ArrayEncoder.writeFixed32NoTag/writeFixed64NoTag (protocolbuffers/protobuf@a51f98c)
• CodedOutputStream: avoid updating position to go beyond end of array. (protocolbuffers/protobuf@76ab5f2)
• Convert IndexOutOfBoundsException to OutOfSpaceException in UnsafeDirectNioEncoder (protocolbuffers/protobuf@0e75d92)
• Suppress ReturnValueIgnored errorprone issues (protocolbuffers/protobuf@bbbc7b9)
• Fix packed reflection handling bug in edition 2023. (protocolbuffers/protobuf@4c92328)
• Move cc_proto_library from Bazel repository (protocolbuffers/protobuf@5254448)
• Protobuf Lite ArrayLists: Defer allocating backing array until we have some idea how much to allocate. (protocolbuffers/protobuf@05a8a40)
• Allocate correct-sized array when parsing packed fixed-width primitives (protocolbuffers/protobuf@4e8469c)
• Bugfix: Make extensions beyond n=16 immutable. (protocolbuffers/protobuf@ee419f2)
• Reserve capacity in ProtobufArrayList when calling Builder.addAllRepeatedMessage(Collection) (protocolbuffers/protobuf@e3cc31a)
• Avoid allocating iterators when calling Message.Builder.addAllFoo(RandomAccess List) (protocolbuffers/protobuf@bd1887e)
• Remove the AnyMetadata class and use free functions instead. (protocolbuffers/protobuf@920d5c3)
• Add [[deprecated]] attribute when generating enums and classes. (protocolbuffers/protobuf@23aada2)
• Binary compatibility shims for GeneratedMessageV3, SingleFieldBuilderV3, RepeatedFieldBuilderV3, and their nested classes to restore binary compatibility with <=v3.x.x generated code built against v3.x.x prior to v4.26.0 breaking release. (protocolbuffers/protobuf@df8a11e)
• Implement a mechanism to control the output format of Message.toString within a Runnable instance. (protocolbuffers/protobuf@737803e)
• Fix TextFormat.Parser to appropriately handle unknown values for open enums (protocolbuffers/protobuf@df1aad4)
• Inline ArrayList's array into SmallSortedMap (protocolbuffers/protobuf@910f627)
• Deprecated unused/obsolete mutable APIs, to be removed in next breaking change. (protocolbuffers/protobuf@e889b0b)

Kotlin

• Give Kotlin jars an OSGi Manifest (#​18812) (protocolbuffers/protobuf@0c51eba)
• Support building //java with bzlmod (protocolbuffers/protobuf@507ba36)
• Replace deprecated use of toBytes() with Character property .code (#​18236) (protocolbuffers/protobuf@5d9deab)

Csharp

• Begin adding extension numbers to SourceCodeInfo and FileDescriptorSet for tooling purposes. (protocolbuffers/protobuf@07e489d)

Objective-C

• [ObjC] Make debug runtime tell developers to update their generated code. (protocolbuffers/protobuf@cdd3cf7)
• [ObjC] Issue stderr warnings for deprecated generation options. (protocolbuffers/protobuf@e9140a1)
• [ObjC] Deprecate GPBUnknownFieldSet and related apis. (protocolbuffers/protobuf@d794139)
• [ObjC] Deprecate GPBTextFormatForUnknownFieldSet(). (protocolbuffers/protobuf@55e997e)

Python

• Fix a python bug when assign an empty Struct at creation. (#​18977) (protocolbuffers/protobuf@bb0d575)
• Add a deprecation warning to py_proto_library (#​19032) (protocolbuffers/protobuf@53cde64)
• Load Python rules everywhere in protobuf (protocolbuffers/protobuf@a18f0de)
• Fix cord handling in DynamicMessage and oneofs. (protocolbuffers/protobuf@9e8b30c)
• Fix packed reflection handling bug in edition 2023. (protocolbuffers/protobuf@4c92328)
• Fix ContainerBase::DeepCopy to not modify the source object. (protocolbuffers/protobuf@9fa1f4f)
• Introduce lifetimes for individual feature values. (protocolbuffers/protobuf@0b6e768)
• Nextgen Proto Pythonic API: Add any.py (protocolbuffers/protobuf@dd95e5b)
• Add test that tries to parse a JSON string that exceeds the recursion limit. (protocolbuffers/protobuf@5a22455)
• Raise warnings for deprecated python cpp extension GetDebugString(). (protocolbuffers/protobuf@b70c4b0)
• Nextgen Proto Pythonic API: Add duration.py (protocolbuffers/protobuf@903c3f1)
• Nextgen Proto Pythonic API: Add timestamp.py (protocolbuffers/protobuf@ee26f27)
• -Remove service.py usages in builder (protocolbuffers/protobuf@2967c52)
• Raise warnings for deprecated google/protobuf/reflection.py APIs. (protocolbuffers/protobuf@55705f8)

PHP

• Fix: do not throw deprecated warning on field getters for default values (#​17788) (protocolbuffers/protobuf@6d84da5)

PHP C-Extension

• Fixed non-conformance in JSON parsing for empty strings in numeric fields. (#​19259) (protocolbuffers/protobuf@b69ea96)
• See also UPB changes below, which may affect PHP C-Extension.

Ruby

• Fixed non-conformance in JSON parsing for empty strings in numeric fields. (#​19259) (protocolbuffers/protobuf@b69ea96)
• Remove codes for unsupported Ruby (#​17353) (protocolbuffers/protobuf@184f3a3)
• [Ruby] Warn if assigning a "UTF-8" string with invalid UTF-8. (#​17253) (protocolbuffers/protobuf@b07e4b1)

Ruby C-Extension

• Fixed non-conformance in JSON parsing for empty strings in numeric fields. (#​19259) (protocolbuffers/protobuf@b69ea96)
• Fix a potential Ruby-upb use of uninitialized memory. (protocolbuffers/protobuf@4d75c82)
• [Ruby] Warn if assigning a "UTF-8" string with invalid UTF-8. (#​17253) (protocolbuffers/protobuf@b07e4b1)
• See also UPB changes below, which may affect Ruby C-Extension.

UPB (Python/PHP/Ruby C-Extension)

• Fixed non-conformance in JSON parsing for empty strings in numeric fields. (#​19259) (protocolbuffers/protobuf@b69ea96)
• Load Python rules everywhere in protobuf (protocolbuffers/protobuf@a18f0de)
• Fix a potential Ruby-upb use of uninitialized memory. (protocolbuffers/protobuf@4d75c82)
• Fixed NAN/INFINITY definitions to work on Windows 11 SDK. (protocolbuffers/protobuf@0309d86)

Other

• Fix typo in BCR maintainer name config for acozzette@ (#​19307) (protocolbuffers/protobuf@02cffa4)
• Remove Bazel 6 in BCR presubmits (#​19309) (protocolbuffers/protobuf@7537b03)
• Upgrade rules_cc 0.0.15 and rules_java 8.3.1 (#​19215) (protocolbuffers/protobuf@fb8ee79)
• Upgrade rules_java and remove experimental_google_legacy_api flag (#​18889) (protocolbuffers/protobuf@f25389b)
• Replace use of C++17 with disabling a warning (protocolbuffers/protobuf@111584f)
• Load Shell rules everywhere in protobuf (protocolbuffers/protobuf@1822c8a)
• Fix Bazel dependency cycle issue affecting Kythe (#​18768) (protocolbuffers/protobuf@6df33a4)
• Remove rules_rust dependency (protocolbuffers/protobuf@4329b89)
• Remove release branch staleness tests. (protocolbuffers/protobuf@3551ee3)
• Remove javaopts requiring java8 in non-release builds. (protocolbuffers/protobuf@98beac0)
• Docs: add nebius.ai custom options to registry (#​18297) (protocolbuffers/protobuf@e5d2dbd)
• Protobuf-mode: add edition keyword for syntax highlighting (protocolbuffers/protobuf@1384512)

v28.3: Protocol Buffers v28.3

Compare Source

Announcements

• Protobuf News may include additional announcements or pre-announcements for upcoming changes.

C++

• Fix packed reflection handling bug in edition 2023. (#​18405) (protocolbuffers/protobuf@c4124f9)

Java

• Mute the minor version warning https://github.com/protocolbuffers/protobuf/issues/18096 (#​18923) (protocolbuffers/protobuf@fe30f9a)
• Populate Kotlin Manifest Files (#​18859) (protocolbuffers/protobuf@d82fb47)
• Re-export includingDefaultValueFields in deprecated state for important Cloud customer. (protocolbuffers/protobuf@3b62d78)
• Cherrypick restoration of mutableCopy helpers (protocolbuffers/protobuf@3ea568a)
• Fix packed reflection handling bug in edition 2023. (#​18405) (protocolbuffers/protobuf@c4124f9)

Kotlin

• Populate Kotlin Manifest Files (#​18859) (protocolbuffers/protobuf@d82fb47)

Python

• Mute the minor version warning https://github.com/protocolbuffers/protobuf/issues/18096 (#​18923) (protocolbuffers/protobuf@fe30f9a)
• Fix packed reflection handling bug in edition 2023. (#​18405) (protocolbuffers/protobuf@c4124f9)

Other

• Fix merge conflicts (protocolbuffers/protobuf@664a7e1)
• [ObjC] Disabling visionOS on CI. (protocolbuffers/protobuf@22cd8ba)
• Update staleness tests to only run over release branch (#​18398) (protocolbuffers/protobuf@8e94b14)

v28.2: Protocol Buffers v28.2

Compare Source

Announcements

• Protobuf News may include additional announcements or pre-announcements for upcoming changes.

C++

• Fix cord handling in DynamicMessage and oneofs. (#​18373) (protocolbuffers/protobuf@5b0e543)

Java

• Add recursion check when parsing unknown fields in Java. (protocolbuffers/protobuf@ac9fb5b)

v28.1: Protocol Buffers v28.1

Compare Source

Announcements

• Protobuf News may include additional announcements or pre-announcements for upcoming changes.

C++

• Fix compiler error with StrongReferenceToType() (protocolbuffers/protobuf@8ea3bb1)

PHP

PHP C-Extension

• Upb: fix uninitialized upb_MessageValue buffer bugs (#​18160) (protocolbuffers/protobuf@9deedf0)
• See also UPB changes below, which may affect PHP C-Extension.

Ruby

Ruby C-Extension

• Fix a potential Ruby-upb use of uninitialized memory. (protocolbuffers/protobuf@70b77de)
• Upb: fix uninitialized upb_MessageValue buffer bugs (#​18160) (protocolbuffers/protobuf@9deedf0)
• See also UPB changes below, which may affect Ruby C-Extension.

UPB (Python/PHP/Ruby C-Extension)

• Fix a potential Ruby-upb use of uninitialized memory. (protocolbuffers/protobuf@70b77de)
• Upb: fix uninitialized upb_MessageValue buffer bugs (#​18160) (protocolbuffers/protobuf@9deedf0)

v28.0: Protocol Buffers v28.0

Compare Source

Announcements

• Protobuf News may include additional announcements or pre-announcements for upcoming changes.

Compiler

• UPB text encoder without using reflection for Rust (used for a message's Debug trait) that will print out field number to value entries instead of field name to value entries of a message like how it's expected for the usual text format using reflection. (protocolbuffers/protobuf@f9dd9ce)
• Enable MessageLite::DebugString to use Message::DebugString where possible. (protocolbuffers/protobuf@f810cc5)
• Always report plugin support errors from protoc. (protocolbuffers/protobuf@986ef8d)
• Stop supporting EDITION_PROTO2 as an alias for EDITION_LEGACY. (protocolbuffers/protobuf@35b3425)
• Rename DynamicCastToGenerated/DownCastToGenerated to (protocolbuffers/protobuf@18da465)
• Mark deleted fields in descriptor.proto reserved (protocolbuffers/protobuf@44c409d)
• Protoc: support inf, -inf, nan, and -nan in option values (#​15017) (protocolbuffers/protobuf@3c03e93)

C++

• Move -Werror to our test/dev bazelrc files. (#​17938) (protocolbuffers/protobuf@f5a1b17)
• Introduce FieldDescriptor::cpp_string_type() API to replace direct ctype inspection which will be removed in the next breaking change (protocolbuffers/protobuf@72b0b7a)
• Removed specific MSVC settings when installing (#​17285) (protocolbuffers/protobuf@770090e)
• Omit the _raw_default_instance_ declaration when using DLL linkage. (protocolbuffers/protobuf@79c55cb)
• Enable MessageLite::DebugString to use Message::DebugString where possible. (protocolbuffers/protobuf@f810cc5)
• Fix a bug in which proto code uses ctype instead of string_type internally. (protocolbuffers/protobuf@dfbe987)
• Add an optimization that prevents an exponential number of comparisons on deeply (protocolbuffers/protobuf@594a71f)
• Replace FindHelper() with BucketNumber() when only the bucket number is required. (protocolbuffers/protobuf@8c7b1ec)
• Stop supporting EDITION_PROTO2 as an alias for EDITION_LEGACY. (protocolbuffers/protobuf@35b3425)
• Rename DynamicCastToGenerated/DownCastToGenerated to (protocolbuffers/protobuf@18da465)
• Prohibit using features in the same file they're defined in. (protocolbuffers/protobuf@24b91a7)
• Implement new Debug API with redaction. (protocolbuffers/protobuf@bb68eb2)
• Use bool HasHasbits(const FieldDescriptor*) instead of manual checks. (protocolbuffers/protobuf@448e326)
• Add java to reserved names to escape extensions to java_. This may break existing references to gencode for extensions named java. (protocolbuffers/protobuf@c99cf4b)
• Put arena cleanup nodes on a separate chunked list instead of at the ends of arena blocks. (protocolbuffers/protobuf@f70d90b)
• Fix validation checks of implicit presence. (protocolbuffers/protobuf@d6c2833)
• Clarify map behaviors in editions. (protocolbuffers/protobuf@0dbd99a)
• Protoc: support inf, -inf, nan, and -nan in option values (#​15017) (protocolbuffers/protobuf@3c03e93)

Java

• Binary compatibility shims for GeneratedMessageV3, SingleFieldBuilderV3, RepeatedFieldBuilderV3, and their nested classes to restore binary compatibility with <=v3.x.x generated code built against v3.x.x prior to v4.26.0 breaking release. (protocolbuffers/protobuf@6bf01c5)
• Remove unused pom.xml files. (protocolbuffers/protobuf@aaf5f79)
• Add overload for LazyStringArrayList.add(String): boolean (protocolbuffers/protobuf@761d49a)
• Hoist SmallSortedMap.getNumArrayEntries() outside loops over array entries (protocolbuffers/protobuf@229c958)
• Omit the _raw_default_instance_ declaration when using DLL linkage. (protocolbuffers/protobuf@79c55cb)
• Java: Deprecate newExtensionWriter. (protocolbuffers/protobuf@7122ba1)
• Immutable java: Use new lower-allocation extension serialization APIs from gencode (protocolbuffers/protobuf@4151486)
• Reserialize all unresolved features using java features from the generated pool in case of descriptors from the custom pool. (protocolbuffers/protobuf@415a147)
• Fix delimited inheritance in all languages. (protocolbuffers/protobuf@8beb970)
• Full java runtime: Avoid allocating ArrayList iterators when serializing UnknownFieldSet (protocolbuffers/protobuf@fac847c)
• Move back deprecation of java utf8 feature to 2024. (protocolbuffers/protobuf@bd7078d)
• Reparse unknown features using extension registry containing Java features. (protocolbuffers/protobuf@68d9087)
• Remove field SmallSortedMap.maxArraySize (protocolbuffers/protobuf@16e0a63)
• Delete unused method SmallSortedSet.getOverflowEntriesDescending (protocolbuffers/protobuf@c05be32)
• Avoid allocating FieldSet iterator if FieldSet is empty (protocolbuffers/protobuf@3ba7280)
• Lazily resolve features for proto2 and proto3 for compatibility with old open source gencode that does not invoke feature resolution from gencode static init. (protocolbuffers/protobuf@11c27df)
• Implement new Debug API with redaction. (protocolbuffers/protobuf@bb68eb2)
• Replace SmallSortedMap.EmptySet with equivalent Collections.emptySet() (protocolbuffers/protobuf@c6e2778)
• Add java to reserved names to escape extensions to java_. This may break existing references to gencode for extensions named java. (protocolbuffers/protobuf@c99cf4b)
• Avoid allocating TreeMap in UnknownFieldSet.Builder.asMap (protocolbuffers/protobuf@4b7c2d4)
• Avoid allocating iterator in TextFormat printing UnknownFieldSet (protocolbuffers/protobuf@8c6e5b7)
• Add null to the list of reserved words. (protocolbuffers/protobuf@510c143)
• Add UnknownFieldSet.isEmpty (protocolbuffers/protobuf@c56bddd)
• Java full runtime: Avoid allocating when calling asMap on empty UnknownFieldSet (protocolbuffers/protobuf@d0b016f)
• Return the default instance when parsing from an empty byte[]. (protocolbuffers/protobuf@f597991)
• Deprecate building from source with Maven to be removed in 4.28.x. (protocolbuffers/protobuf@4c8da99)
• Java full runtime: Avoid allocating iterator if UnknownFieldSet's TreeMap is empty (protocolbuffers/protobuf@4f12891)
• Proto java full runtime: avoid allocating Integers accessing enum lists (protocolbuffers/protobuf@cc79f77)
• Split bootstrapped java_features.proto to keep it from leaking out. (protocolbuffers/protobuf@2257232)
• Java Proto lite: avoid boxing Integers accessing enum lists (protocolbuffers/protobuf@fb054c8)
• In the Kotlin DSL, reference builder methods with property syntax. (protocolbuffers/protobuf@e9c9970)
• Java Proto Lite: Serialize repeated enums without allocating (protocolbuffers/protobuf@de6aba9)
• Avoid boxing when serializing primitive lists in CodedOutputStreamWriter (protocolbuffers/protobuf@eaee04d)

Kotlin

• Remove unused pom.xml files. (protocolbuffers/protobuf@aaf5f79)
• In the Kotlin DSL, reference builder methods with property syntax. (protocolbuffers/protobuf@e9c9970)

Csharp

• Fix delimited inheritance in all languages. (protocolbuffers/protobuf@8beb970)
• Handle groups in C# JsonParser (#​16970) (protocolbuffers/protobuf@092cc15)
• Introduce MessageDescriptor.IsMapType in C# reflection to make it easier to tell whether a given message was generated by protoc for a map field. (protocolbuffers/protobuf@047fc76)
• C#: Fix discovery of oneof declarations in descriptor protos. (protocolbuffers/protobuf@b50ff60)

Objective-C

• [ObjC] Issue stderr warnings for deprecated generation options. (protocolbuffers/protobuf@b276420)
• [ObjC] Add api to add a field to another collection of unknown fields. (protocolbuffers/protobuf@0790ab4)
• [ObjC] Fix GPBUnknownField/GPBUnknownFields copy. (protocolbuffers/protobuf@b3b9888)
• [ObjC] Raise an exception for a nil message. (protocolbuffers/protobuf@35bd2be)
• [ObjC] Deprecate GPBUnknownFieldSet and related apis. (protocolbuffers/protobuf@9f6ee72)
• [ObjC] More tests around unknown to known failure cases. (protocolbuffers/protobuf@e822dce)
• [ObjC] Support errors when merging unknown fields to a message. (protocolbuffers/protobuf@c46340e)
• [ObjC] Add apis for removing things from GPBUnknownFields. (protocolbuffers/protobuf@c5c9c89)
• [ObjC] Collect unknown fields as data (protocolbuffers/protobuf@a6b3535)
• [ObjC] Internal helper for getting the unknown field data from a message (protocolbuffers/protobuf@bf2d4e7)
• [ObjC] Update tests to use both unknown fields apis. (protocolbuffers/protobuf@0832b52)
• [ObjC] Deprecate GPBTextFormatForUnknownFieldSet(). (protocolbuffers/protobuf@d1b6f8c)
• [ObjC] Parsing helper and tests around unknown fields. (protocolbuffers/protobuf@9b16ee4)
• [ObjC] Add test around enum unknown values. (protocolbuffers/protobuf@fad7b78)
• [ObjC] Expose a helper for stream error. (protocolbuffers/protobuf@cf7abf6)
• [ObjC] Support MessageSet with GPBUnknownFields. (protocolbuffers/protobuf@ddf9b76)
• [ObjC] Update MessageSet Parsing. (protocolbuffers/protobuf@5fa8cd9)
• [ObjC] Validate MessageSet expectations. (protocolbuffers/protobuf@3aa491c)
• [ObjC] Improve parsing validations (protocolbuffers/protobuf@ef4898f)
• [ObjC] Add Swift helpers for GPBUnknownFields/GPBUnknownField. (protocolbuffers/protobuf@6750ed8)
• [ObjC] Introduce the new GPBUnknownFields type. (protocolbuffers/protobuf@47f633e)
• Rename DynamicCastToGenerated/DownCastToGenerated to (protocolbuffers/protobuf@18da465)

Rust

• Move -Werror to our test/dev bazelrc files. (#​17938) (protocolbuffers/protobuf@f5a1b17)
• Add visibility for rust public aliases for '@​protobuf//:protobuf_rust' (protocolbuffers/protobuf@2cee142)
• UPB text encoder without using reflection for Rust (used for a message's Debug trait) that will print out field number to value entries instead of field name to value entries of a message like how it's expected for the usual text format using reflection. (protocolbuffers/protobuf@f9dd9ce)
• Enable MessageLite::DebugString to use Message::DebugString where possible. (protocolbuffers/protobuf@f810cc5)
• See also UPB changes below, which may affect Rust.

Python

• Raise warnings for deprecated python cpp extension GetDebugString(). (protocolbuffers/protobuf@5fc5558)
• Remove service.py usages in builder (protocolbuffers/protobuf@902a68a)
• Raise warnings for deprecated google/protobuf/reflection.py APIs. (protocolbuffers/protobuf@38140ac)
• Nextgen Proto Pythonic API: Struct/ListValue assignment and creation (protocolbuffers/protobuf@e17821c)
• Fix delimited inheritance in all languages. (protocolbuffers/protobuf@8beb970)
• Make bytearray work (again) (#​16691) (protocolbuffers/protobuf@eb67a91)
• Nextgen Proto Pythonic API: Timestamp/Duration assignment, creation and calculation (protocolbuffers/protobuf@b690e72)
• Update rules_python to 0.28.0 (protocolbuffers/protobuf@e1bf1f0)
• Nextgen Proto Pythonic API: “Add-on” proto for length prefixed serialize/parse (protocolbuffers/protobuf@3a9f074)
• Rename DynamicCastToGenerated/DownCastToGenerated to (protocolbuffers/protobuf@18da465)
• Fixed printing of nan floats/doubles in Python. (protocolbuffers/protobuf@f651080)
• Nextgen Proto Pythonic API: “Add-on” proto for JSON serialize/parse (protocolbuffers/protobuf@6c91de9)
• Nextgen Proto Pythonic API: “Add-on” proto for serialize/parse (protocolbuffers/protobuf@495ba7b)
• Use struct instead of ctype. allows the protobuf python library to work on cpython 3.11's new wasm target [1] (protocolbuffers/protobuf@9de810a)
• Nextgen Proto Pythonic API: Add 'in' operator (protocolbuffers/protobuf@24f27c3)
• Automated rollback of commit f799af8. (protocolbuffers/protobuf@c4bf83b)
• Catch all the exceptions in python JSON ParseDict and raise (protocolbuffers/protobuf@9cc5be1)

PHP

• Chore(php): conformance testing for edition (#​16712) (protocolbuffers/protobuf@01744cc)

PHP C-Extension

• Fix segmentation faults with enabled keep_descriptor_pool_after_request (#​16993) (protocolbuffers/protobuf@e844510)
• See also UPB changes below, which may affect PHP C-Extension.

Ruby

• [Ruby] Warn if assigning a "UTF-8" string with invalid UTF-8. (#​17253) (protocolbuffers/protobuf@fe9a53c)
• Remove Arena_pin in favor of adopting the UPB freezing API. (protocolbuffers/protobuf@1194440)
• Fix Ruby FFI to pass MiniTable to upb_Message_New() aka new_message_from_def(). (protocolbuffers/protobuf@47f4bc9)

Ruby C-Extension

• Move -Werror to our test/dev bazelrc files. (#​17938) (protocolbuffers/protobuf@f5a1b17)
• [Ruby] Warn if assigning a "UTF-8" string with invalid UTF-8. (#​17253) (protocolbuffers/protobuf@fe9a53c)
• [Ruby] Fix mismatched pointer type (#​17240) (protocolbuffers/protobuf@0aa7449)
• Remove Arena_pin in favor of adopting the UPB freezing API. (protocolbuffers/protobuf@1194440)
• See also UPB changes below, which may affect Ruby C-Extension.

UPB (Python/PHP/Ruby C-Extension)

• Move -Werror to our test/dev bazelrc files. (#​17938) (protocolbuffers/protobuf@f5a1b17)
• UPB text encoder without using reflection for Rust (used for a message's Debug trait) that will print out field number to value entries instead of field name to value entries of a message like how it's expected for the usual text format using reflection. (protocolbuffers/protobuf@f9dd9ce)
• Fix delimited inheritance in all languages. (protocolbuffers/protobuf@8beb970)
• Fixed printing of nan floats/doubles in Python. (protocolbuffers/protobuf@f651080)

Other

• Remove --copt="-Werror" from .bazelrc (#​18005) (protocolbuffers/protobuf@c9454f4)
• Remove protobuf rust from BCR presubmits for now. (protocolbuffers/protobuf@92552d3)
• Set -ex in test_java.yml (protocolbuffers/protobuf@6a7e215)
• Refactor java maven GHA test to use our generated jars. (protocolbuffers/protobuf@671ef8b)
• Remove /utf-8 flag added in #​14197 (protocolbuffers/protobuf@440dc83)
• Downgrade CMake to 3.29 to workaround Abseil issue. (protocolbuffers/protobuf@cd75dd5)
• Add minimal Python support to MODULE.bazel (protocolbuffers/protobuf@2eb4d69)
• Fix(bazel/python): incompatible_enable_proto_toolchain_resolution (#​17078) (protocolbuffers/protobuf@8434c12)
• Add Rust support to MODULE.bazel (protocolbuffers/protobuf@f3c140f)
• Add rules_fuzzing dependency to MODULE.bazel. (protocolbuffers/protobuf@a450c9c)
• Reenable FFI tests on CRuby. (protocolbuffers/protobuf@e595749)
• Update comment for message_type (protocolbuffers/protobuf@023e69d)
• Enable textproto conformance tests for "-0" and "-0F". (protocolbuffers/protobuf@13caa08)
• Fix #​10007: Propagate msvc-style link flags to clang-cl with Bazel (protocolbuffers/protobuf@55592a2)
• Add system_python to protobuf_deps.bzl. (protocolbuffers/protobuf@8a11178)

v27.5: Protocol Buffers v27.5

Compare Source

Announcements

• Protobuf News may include additional announcements or pre-announcements for upcoming changes.

C++

• Fix cord handling in DynamicMessage and oneofs. (#​18374) (protocolbuffers/protobuf@6fa3f2d)

Java

• Add recursion check when parsing unknown fields in Java. (#​18388)
  https://github.com/protocolbuffers/protobuf/pull/183888388/commits/8bfa80b5422cc22d64bfba5aa3049b9d5143c99b)

Other

• Remove --copt="-Werror" from .bazelrc (#​18392) (protocolbuffers/protobuf@6481fec)

v27.4: Protocol Buffers v27.4

Compare Source

Announcements

• Protobuf News may include additional announcements or pre-announcements for upcoming changes.

Java

• Binary compatibility shims for GeneratedMessageV3, SingleFieldBuilderV3, RepeatedFieldBuilderV3, and their nested classes to restore binary compatibility with <=v3.x.x generated code built against v3.x.x prior to v4.26.0 breaking release. (protocolbuffers/protobuf@8dd83da)

v27.3: Protocol Buffers v27.3

Compare Source

Announcements

• Protobuf News may include additional announcements or pre-announcements for upcoming changes.

Compiler

• Revert workaround for std::mutex issues on github windows runners. (protocolbuffers/protobuf@ba3e7d7)

C++

• Update staleness (protocolbuffers/protobuf@b7ef2ca)
• Omit the _raw_default_instance_ declaration when using DLL linkage. (protocolbuffers/protobuf@22d9a03)
• Refactor the way we turn on the optimization in StrongPointer. (protocolbuffers/protobuf@a15c9c5)

Java

• Omit the _raw_default_instance_ declaration when using DLL linkage. (protocolbuffers/protobuf@22d9a03)

PHP

PHP C-Extension

• Fix segmentation faults with enabled keep_descriptor_pool_after_request (#​16993) (protocolbuffers/protobuf@ca3b732)

Ruby

Ruby C-Extension

• [Ruby] Fix mismatched pointer type ([#​17240](https://redirect.github.com/protocolbuffers/protobuf/is

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