Protocol Buffers 3.29.3 + x64

Announcements:
Protobuf News may include additional announcements or pre-announcements for upcoming changes.
C++:
Fix cmake installation location of java and go features (#19773) (1dc5842)
Other:
Add .bazeliskrc for protobuf repo to tell bazelisk to use 7.1.2 by default. (#19884) (9a5d2c3)
Update artifact actions to v4 (#19703) (8e7e6b0)

Announcements
Protobuf News may include additional announcements or pre-announcements for upcoming changes.
Java
Rename maven to protobuf_maven in MODULE.bazel (#18641) (#19477) (ba6da44)
Kotlin
Rename maven to protobuf_maven in MODULE.bazel (#18641) (#19477) (ba6da44)
Python
Revert "Remove deprecated service.py usages from test". For 29.x only (#19434) (5864b50)

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. (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:
Give Kotlin jars an OSGi Manifest (#18812) (0c51eba)
Support building //java with bzlmod (507ba36)
Replace deprecated use of toBytes() with Character property .code (#18236) (5d9deab)
Csharp:
Begin adding extension numbers to SourceCodeInfo and FileDescriptorSet for tooling purposes. (07e489d)
Objective-C:
[ObjC] Make debug runtime tell developers to update their generated code. (cdd3cf7)
[ObjC] Issue stderr warnings for deprecated generation options. (e9140a1)
[ObjC] Deprecate GPBUnknownFieldSet and related apis. (d794139)
[ObjC] Deprecate GPBTextFormatForUnknownFieldSet(). (55e997e)
Python:
Fix a python bug when assign an empty Struct at creation. (#18977) (bb0d575)
Add a deprecation warning to py_proto_library (#19032) (53cde64)
Load Python rules everywhere in protobuf (a18f0de)
Fix cord handling in DynamicMessage and oneofs. (9e8b30c)
Fix packed reflection handling bug in edition 2023. (4c92328)
Fix ContainerBase::DeepCopy to not modify the source object. (9fa1f4f)
Introduce lifetimes for individual feature values. (0b6e768)
Nextgen Proto Pythonic API: Add any.py (dd95e5b)
Add test that tries to parse a JSON string that exceeds the recursion limit. (5a22455)
Raise warnings for deprecated python cpp extension GetDebugString(). (b70c4b0)
Nextgen Proto Pythonic API: Add duration.py (903c3f1)
Nextgen Proto Pythonic API: Add timestamp.py (ee26f27)
-Remove service.py usages in builder (2967c52)
Raise warnings for deprecated google/protobuf/reflection.py APIs. (55705f8)
PHP:
Fix: do not throw deprecated warning on field getters for default values (#17788) (6d84da5)
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)
Remove codes for unsupported Ruby (#17353) (184f3a3)
[Ruby] Warn if assigning a "UTF-8" string with invalid UTF-8. (#17253) (b07e4b1)
Ruby C-Extension:
Fixed non-conformance in JSON parsing for empty strings in numeric fields. (#19259) (b69ea96)
Fix a potential Ruby-upb use of uninitialized memory. (4d75c82)
[Ruby] Warn if assigning a "UTF-8" string with invalid UTF-8. (#17253) (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) (b69ea96)
Load Python rules everywhere in protobuf (a18f0de)
Fix a potential Ruby-upb use of uninitialized memory. (4d75c82)
Fixed NAN/INFINITY definitions to work on Windows 11 SDK. (0309d86)
Other:
Fix typo in BCR maintainer name config for acozzette@ (#19307) (02cffa4)
Remove Bazel 6 in BCR presubmits (#19309) (7537b03)
Upgrade rules_cc 0.0.15 and rules_java 8.3.1 (#19215) (fb8ee79)
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)
Docs: add nebius.ai custom options to registry (#18297) (e5d2dbd)
Protobuf-mode: add edition keyword for syntax highlighting (1384512)

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:
Populate Kotlin Manifest Files (#18859) (d82fb47)
Python:
Mute the minor version warning #18096 (#18923) (fe30f9a)
Fix packed reflection handling bug in edition 2023. (#18405) (c4124f9)
Other:
Fix merge conflicts (664a7e1)
[ObjC] Disabling visionOS on CI. (22cd8ba)
Update staleness tests to only run over release branch (#18398) (8e94b14)

Announcements:
Protobuf News may include additional announcements or pre-announcements for upcoming changes.
Python:
Raise warnings for deprecated python syntax usages (74f5cf4)
Ruby:
Add support for extensions in CRuby, JRuby, and FFI Ruby (#14703) (#14756) (e4b00c7)
Add support for options in CRuby, JRuby and FFI (#14594) (#14739) (2495d4f)

Compiler:
Drop support for Bazel 5. (fff4905)
Allow code generators to specify whether or not they support editions. (e2cec78)
Release prototype of Protobuf Editions. (4f9e417)
Compiler: Correct depfile generation when there are no outputs (a44fc2b)
Add dllexport_decl for generated default instance. (#13085) (9d0961a)
In TSan mode, detect concurrent mutations of repeated/map fields. (d800c5f)
Add a workaround for GCC constexpr bug (e15326b)
Turn on the table-driven parser by default, as it is no longer experimental. (c3e2efe)
Shrink code size of generated protocol buffer code via a few (97c3513)
Implement enforcement of target constraints (e3848c1)
Fix(libprotoc): export useful symbols from .so (44b4bcc)
C++:
In OSS mode omit some extern template specializations. We have seen reports of compilers falling over due to the size of translation units. (2ed49c9)
Automated rollback of commit adb2c4b. (9f2d7ea)
Fix building shared libraries on MinGW-w64 (#13240) (c2f07bb)
Enable TSan validation to detect when a mutable accessor of a message is called concurrently with another accessor on the same message, which is a data race. (0275e51)
Release prototype of Protobuf Editions. (4f9e417)
Enable TSan validation to detect when a mutable accessor of a message is called concurrently with another accessor on the same message, which is a data race. (e2eae81)
Fix case of locality optimizer being wrong for split repeated fields and add a check that the optimized order has the same size as the unoptimized order. (76a327e)
Enable TSan validation to detect when a mutable accessor of a message is called concurrently with another accessor on the same message, which is a data race. (80dbc50)
Mark single arg ctor explicit in DynamicMessageFactory. (8fe88a5)
Enable TSan validation to detect when a mutable accessor of a message is called concurrently with another accessor on the same message, which is a data race. (6d79d13)
Let ParseRepeatedStringOnce call AllocateFromStringBlock(). (bcf3e36)
Check next tag in MpRepeatedMessage. (9e1cf6f)
When parsing repeated primitives, append to a tmp array on stack. (adb2c4b)
Add dllexport_decl for generated default instance. (#13085) (9d0961a)
TextFormat::ParseFieldValueFromString now takes absl::string_view as input instead of const std::string & (5411fc6)
In TSan mode, detect concurrent mutations of repeated/map fields. (d800c5f)
Use the same ABI for static and shared libraries on non-Windows platforms (#12983) (4329fde)
Replace ColdChunkSkipper with iterator-based approach. (ad677f3)
Check invalid type_id after casting it to uint32_t. (d890126)
Strengthen assertions on reflection methods. (eb5e9e0)
Add assertions to reflection methods. (5866e45)
Fail to parse message sets if type_id is zero. (bc1b1f6)
Enable the use of [SU]Int32Size and EnumSize templates for AArch64 (#11102) (e285d3e)
Add a workaround for GCC constexpr bug (e15326b)
Add ABSL_ATTRIBUTE_LIFETIME_BOUND attribute on Map, RepeatedField and RepeatedPtrField. (7b7ba2d)
Turn on the table-driven parser by default, as it is no longer experimental. (c3e2efe)
Fix: avoid warnings on MSVC (#12697) (4fcf2c0)
Fix: avoid warnings on Windows (#12701) (f9108c2)
Shrink code size of generated protocol buffer code via a few (97c3513)
Fix(libprotoc): export useful symbols from .so (#12619) (b1ae4fa)
Forbid embedded nulls in json_name. (b478a29)
Implement option retention for C# (5f64444)
Implement enforcement of target constraints (e3848c1)
Make RepeatedField and RepeatedPtrField be destructor skippable for proto arenas. (e4168df)
Update MessageDifferencer to conditionally force comparing additional fields while doing PARTIAL comparison (compare fields which are not repeated, have no presence and are set to their default value). (748f57f)
CMake: Use the correct jsoncpp target name in static builds (#12733) (d372fcd)
Fix: missing -DPROTOBUF_USE_DLLS in pkg-config (#12700) (f86008a)
Avoid using string(JOIN..., which requires cmake 3.12 (adee0a5)
Java:
Put a 4k limit on preallocation to prevent OOM from malformed inputs. (173adca)
Mark OneofDescriptor.isSynthetic() deprecated. (b6b86e2)
Use ProtobufArrayList for repeated bytes field. Presize primitive arrays for fixed-length primitives. (b0b926a)
Add protobuf-kotlin into protobuf-bom (#12936) (943b696)
Handle clear for Java proto3 optionals (synthetic oneofs) using field descriptor instead of clear method. (a534902)
Deps: Update Guava to 32.0.0 (#12953) (cd615a8)
Migrate repeated numeric fields to use bit field to track presence instead of using it to indicate the field mutability to potentially skip work on the field during build operations. (f0de774)
Automated rollback of commit 3e188b7. (a1b3ff0)
Csharp:
[C#] Replace regex that validates descriptor names

Update protobuf dep to latest 23.x commit (#1388) (protocolbuffers/upb@455cfdb)

C++
Update zlib to 1.2.13 (#10819)
Python
Target MacOS 10.9 to fix #10799 (#10807)
Ruby
Replace libc strdup usage with internal impl to restore musl compat (#10818)