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Releases: protocolbuffers/protobuf

Protocol Buffers v29.2

18 Dec 14:54
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  • Protobuf News may include additional announcements or pre-announcements for upcoming changes.

C++

Java

Other

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

Protocol Buffers v29.1

04 Dec 16:42
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Announcements

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

Java

Kotlin

Python

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

Protocol Buffers v29.0

27 Nov 18:47
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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) (6f310d5)
  • Fix proto_info_bzl (#18918) (083de5f)
  • Use rules_cc everywhere in protobuf (ddadd0b)
  • Upgrade rules_cc to 0.0.13 (3dd4835)
  • Convert proto toolchain string to Label (aa181e2)
  • Prepare supporting targets for testing (a748b10)
  • Support --incompatible_enable_proto_toolchain_resolution (372ddb3)
  • Move ProtoInfo and ProtoLangToolchainInfo from Bazel (426ca8a)
  • Move java_{lite_}proto_library from Bazel repository (d77bdac)
  • Move proto_toolchain from rules_proto to protobuf (9f9cb7a)
  • Move proto_library from Bazel repository (3ff2cf0)
  • Move proto_common implementation from Bazel binary (b19fbe6)

Compiler

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

C++

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

Java

  • Remove deprecation warnings for Timestamp and Duration add/subtract/between that we do not yet have alternatives to. (f606c13)
  • [29.x] Add missing java load (#19016) (bb287be)
  • Give Kotlin jars an OSGi Manifest (#18812) (0c51eba)
  • Re-export includingDefaultValueFields in deprecated state for important Cloud customer. (7321b2f)
  • Restore compatibility with 3.22 gencode by re-adding mutableCopy helpers (1b1e90b)
  • Speed up CodedOutputStream by extracting rarely-executed string formatting code (f8f5136)
  • Return constant Value objects for true, false, and "" (4fbb0c5)
  • Optimise CodedOutputStream.ArrayEncoder.writeFixed32NoTag/writeFixed64NoTag (a51f98c)
  • CodedOutputStream: avoid updating position to go beyond end of array. (76ab5f2)
  • Convert IndexOutOfBoundsException to OutOfSpaceException in UnsafeDirectNioEncoder (0e75d92)
  • Suppress ReturnValueIgnored errorprone issues (bbbc7b9)
  • Fix packed reflection handling bug in edition 2023. (4c92328)
  • Move cc_proto_library from Bazel repository (5254448)
  • Protobuf Lite ArrayLists: Defer allocating backing array until we have some idea how much to allocate. (05a8a40)
  • Allocate correct-sized array when parsing packed fixed-width primitives (4e8469c)
  • Bugfix: Make extensions beyond n=16 immutable. (ee419f2)
  • Reserve capacity in ProtobufArrayList when calling Builder.addAllRepeatedMessage(Collection) (e3cc31a)
  • Avoid allocating iterators when calling Message.Builder.addAllFoo(RandomAccess List) (bd1887e)
  • Remove the AnyMetadata class and use free functions instead. (https://github.com/protocolbuffers/protobuf/com...
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Protocol Buffers v29.0-rc3

18 Nov 22:27
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Pre-release

Announcements

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

Bazel

Compiler

  • Begin adding extension numbers to SourceCodeInfo and FileDescriptorSet for tooling purposes. (07e489d)
  • Update protoc release to include editions language features proto for Go (#19013) (63d966b)

Java

  • Remove deprecation warnings for Timestamp and Duration add/subtract/between that we do not yet have alternatives to. (f606c13)
  • [29.x] Add missing java load (#19016) (bb287be)

Csharp

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

Python

  • Fix a python bug when assign an empty Struct at creation. (#18977) (bb0d575)
  • Add a deprecation warning to py_proto_library (#19032) (53cde64)

PHP

PHP C-Extension

  • Fixed non-conformance in JSON parsing for empty strings in numeric fields. (#19259) (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) (b69ea96)

Ruby C-Extension

  • Fixed non-conformance in JSON parsing for empty strings in numeric fields. (#19259) (b69ea96)
  • 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) (b69ea96)

Other

  • Upgrade rules_cc 0.0.15 and rules_java 8.3.1 (#19215) (fb8ee79)

Protocol Buffers v29.0-rc2

23 Oct 20:40
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Pre-release

Announcements

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

Bazel

  • Fix proto_info_bzl (#18918) (083de5f)
  • Use rules_cc everywhere in protobuf (ddadd0b)
  • Upgrade rules_cc to 0.0.13 (3dd4835)
  • Convert proto toolchain string to Label (aa181e2)
  • Prepare supporting targets for testing (a748b10)

Java

  • Give Kotlin jars an OSGi Manifest (#18812) (0c51eba)
  • Re-export includingDefaultValueFields in deprecated state for important Cloud customer. (7321b2f)
  • Restore compatibility with 3.22 gencode by re-adding mutableCopy helpers (1b1e90b)

Kotlin

Python

  • Load Python rules everywhere in protobuf (a18f0de)

UPB (Python/PHP/Ruby C-Extension)

  • Load Python rules everywhere in protobuf (a18f0de)

Other

  • Upgrade rules_java and remove experimental_google_legacy_api flag (#18889) (f25389b)
  • Replace use of C++17 with disabling a warning (111584f)
  • Load Shell rules everywhere in protobuf (1822c8a)
  • Fix Bazel dependency cycle issue affecting Kythe (#18768) (6df33a4)
  • Remove rules_rust dependency (4329b89)
  • Remove release branch staleness tests. (3551ee3)
  • Remove javaopts requiring java8 in non-release builds. (98beac0)

Protocol Buffers v28.3

22 Oct 23:36
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Announcements

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

C++

  • Fix packed reflection handling bug in edition 2023. (#18405) (c4124f9)

Java

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

Kotlin

Python

Other

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

Protocol Buffers v29.0-rc1

30 Sep 22:55
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Pre-release

Announcements

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

Bazel

  • Support --incompatible_enable_proto_toolchain_resolution (372ddb3)
  • Move ProtoInfo and ProtoLangToolchainInfo from Bazel (426ca8a)
  • Move java_{lite_}proto_library from Bazel repository (d77bdac)
  • Move proto_toolchain from rules_proto to protobuf (9f9cb7a)
  • Move proto_library from Bazel repository (3ff2cf0)
  • Move proto_common implementation from Bazel binary (b19fbe6)

Compiler

  • Introduce lifetimes for individual feature values. (0b6e768)
  • Windows - Fix handling of utf8 command line arguments (#17854) (b9d1800)
  • Limit feature deprecation warnings to reduce noise. (5cd9a46)

C++

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

Java

  • Speed up CodedOutputStream by extracting rarely-executed string formatting code (f8f5136)
  • Return constant Value objects for true, false, and "" (4fbb0c5)
  • Optimise CodedOutputStream.ArrayEncoder.writeFixed32NoTag/writeFixed64NoTag (a51f98c)
  • CodedOutputStream: avoid updating position to go beyond end of array. (76ab5f2)
  • Convert IndexOutOfBoundsException to OutOfSpaceException in UnsafeDirectNioEncoder (0e75d92)
  • Suppress ReturnValueIgnored errorprone issues (bbbc7b9)
  • Fix packed reflection handling bug in edition 2023. (4c92328)
  • Move cc_proto_library from Bazel repository (5254448)
  • Protobuf Lite ArrayLists: Defer allocating backing array until we have some idea how much to allocate. (05a8a40)
  • Allocate correct-sized array when parsing packed fixed-width primitives (4e8469c)
  • Bugfix: Make extensions beyond n=16 immutable. (ee419f2)
  • Reserve capacity in ProtobufArrayList when calling Builder.addAllRepeatedMessage(Collection) (e3cc31a)
  • Avoid allocating iterators when calling Message.Builder.addAllFoo(RandomAccess List) (bd1887e)
  • Remove the AnyMetadata class and use free functions instead. (920d5c3)
  • Add [[deprecated]] attribute when generating enums and classes. (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. (df8a11e)
  • Implement a mechanism to control the output format of Message.toString within a Runnable instance. (737803e)
  • Fix TextFormat.Parser to appropriately handle unknown values for open enums (df1aad4)
  • Inline ArrayList's array into SmallSortedMap (910f627)
  • Deprecated unused/obsolete mutable APIs, to be removed in next breaking change. (e889b0b)

Kotlin

  • Support building //java with bzlmod (507ba36)
  • Replace deprecated use of toBytes() with Character property .code (#18236) (5d9deab)

Objective-C

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Protocol Buffers v28.2

18 Sep 21:10
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Announcements

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

C++

  • Fix cord handling in DynamicMessage and oneofs. (#18373) (5b0e543)

Java

  • Add recursion check when parsing unknown fields in Java. (ac9fb5b)

Protocol Buffers v27.5

18 Sep 22:38
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Announcements

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

C++

  • Fix cord handling in DynamicMessage and oneofs. (#18374) (6fa3f2d)

Java

  • Add recursion check when parsing unknown fields in Java. (#18388)
    (8bfa80b)

Other

Protocol Buffers v25.5

18 Sep 22:07
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Announcements

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

C++

  • Fix cord handling in DynamicMessage and oneofs. (#18375) (e673479)

Java

  • Add recursion check when parsing unknown fields in Java. (4728531)

Python

  • Fixed a SEGV when deep copying a non-reified sub-message. (94a2663)