v4.31.1

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v4.31.0

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v4.30.2

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v4.30.1

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v3.25.8

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v3.25.7

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v3.25.6

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v3.25.5

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v3.25.4

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v3.25.3

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v3.25.2

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v3.25.1

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v3.25.0

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v3.24.4

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v3.24.3

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v3.24.2

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v3.24.1

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v3.24.0

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v3.23.4

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v3.23.3

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v3.23.2

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v3.23.1

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v3.23.0

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v3.22.5

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v3.22.4

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v3.22.3

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v3.21.7

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v3.21.6

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v3.21.5

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v3.21.4

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v3.21.3

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v3.21.2

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v3.21.1

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v3.21.0

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v3.20.3: Protocol Buffers v3.20.3

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Java

• Refactoring java full runtime to reuse sub-message builders and prepare to
  migrate parsing logic from parse constructor to builder.
• Move proto wireformat parsing functionality from the private "parsing
  constructor" to the Builder class.
• Change the Lite runtime to prefer merging from the wireformat into mutable
  messages rather than building up a new immutable object before merging. This
  way results in fewer allocations and copy operations.
• Make message-type extensions merge from wire-format instead of building up
  instances and merging afterwards. This has much better performance.
• Fix TextFormat parser to build up recurring (but supposedly not repeated)
  sub-messages directly from text rather than building a new sub-message and
  merging the fully formed message into the existing field.
• This release addresses a Security Advisory for Java users

v3.20.2: Protocol Buffers v3.20.2

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C++

• Reduce memory consumption of MessageSet parsing
• This release addresses a Security Advisory for C++ and Python users

v3.20.1: Protocol Buffers v3.20.1

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PHP

• Fix building packaged PHP extension (#​9727)
• Fixed composer.json to only advertise compatibility with PHP 7.0+. (#​9819)

Ruby

• Disable the aarch64 build on macOS until it can be fixed. (#​9816)

Other

• Fix versioning issues in 3.20.0

v3.20.0: Protocol Buffers v3.20.0

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2022-03-25 version 3.20.0 (C++/Java/Python/PHP/Objective-C/C#/Ruby/JavaScript)

Ruby

• Dropped Ruby 2.3 and 2.4 support for CI and releases. (#​9311)
• Added Ruby 3.1 support for CI and releases (#​9566).
• Message.decode/encode: Add recursion_limit option (#​9218/#​9486)
• Allocate with xrealloc()/xfree() so message allocation is visible to the
  Ruby GC. In certain tests this leads to much lower memory usage due to more
  frequent GC runs (#​9586).
• Fix conversion of singleton classes in Ruby (#​9342)
• Suppress warning for intentional circular require (#​9556)
• JSON will now output shorter strings for double and float fields when possible
  without losing precision.
• Encoding and decoding of binary format will now work properly on big-endian
  systems.
• UTF-8 verification was fixed to properly reject surrogate code points.
• Unknown enums for proto2 protos now properly implement proto2's behavior of
  putting such values in unknown fields.

Java

• Revert "Standardize on Array copyOf" (#​9400)
• Resolve more java field accessor name conflicts (#​8198)
• Don't support map fields in DynamicMessage.Builder.{getFieldBuilder,getRepeatedFieldBuilder}
• Fix parseFrom to only throw InvalidProtocolBufferException
• InvalidProtocolBufferException now allows arbitrary wrapped Exception types.
• Fix bug in FieldSet.Builder.mergeFrom
• Flush CodedOutputStream also flushes underlying OutputStream
• When oneof case is the same and the field type is Message, merge the
  subfield. (previously it was replaced.)’
• Add @​CheckReturnValue to some protobuf types
• Report original exceptions when parsing JSON
• Add more info to @​deprecated javadoc for set/get/has methods
• Fix initialization bug in doc comment line numbers
• Fix comments for message set wire format.

Kotlin

• Add test scope to kotlin-test for protobuf-kotlin-lite (#​9518)
• Add orNull extensions for optional message fields.
• Add orNull extensions to all proto3 message fields.

Python

• Dropped support for Python < 3.7 (#​9480)
• Protoc is now able to generate python stubs (.pyi) with --pyi_out
• Pin multibuild scripts to get manylinux1 wheels back (#​9216)
• Fix type annotations of some Duration and Timestamp methods.
• Repeated field containers are now generic in field types and could be used
  in type annotations.
  *[Breaking change] Protobuf python generated codes are simplified. Descriptors and message
  classes' definitions are now dynamic created in internal/builder.py.
  Insertion Points for messages classes are discarded.
• has_presence is added for FieldDescriptor in python
• Loosen indexing type requirements to allow valid index() implementations
  rather than only PyLongObjects.
• Fix the deepcopy bug caused by not copying message_listener.
• Added python JSON parse recursion limit (default 100)
• Path info is added for python JSON parse errors
• Pure python repeated scalar fields will not able to pickle. Convert to list
  first.
• Timestamp.ToDatetime() now accepts an optional tzinfo parameter. If
  specified, the function returns a timezone-aware datetime in the given time
  zone. If omitted or None, the function returns a timezone-naive UTC datetime
  (as previously).
• Adds client_streaming and server_streaming fields to MethodDescriptor.
• Add "ensure_ascii" parameter to json_format.MessageToJson. This allows smaller
  JSON serializations with UTF-8 or other non-ASCII encodings.
• Added experimental support for directly assigning numpy scalars and array.
• Improve the calculation of public_dependencies in DescriptorPool.
• [Breaking Change] Disallow setting fields to numpy singleton arrays or repeated fields to numpy
  multi-dimensional arrays. Numpy arrays should be indexed or flattened explicitly before assignment.

Compiler

• Migrate IsDefault(const std::string*) and UnsafeSetDefault(const std::string*)
• Implement strong qualified tags for TaggedPtr
• Rework allocations to power-of-two byte sizes.
• Migrate IsDefault(const std::string*) and UnsafeSetDefault(const std::string*)
• Implement strong qualified tags for TaggedPtr
• Make TaggedPtr Set...() calls explicitly spell out the content type.
• Check for parsing error before verifying UTF8.
• Enforce a maximum message nesting limit of 32 in the descriptor builder to
  guard against stack overflows
• Fixed bugs in operators for RepeatedPtrIterator
• Assert a maximum map alignment for allocated values
• Fix proto1 group extension protodb parsing error
• Do not log/report the same descriptor symbol multiple times if it contains
  more than one invalid character.
• Add UnknownFieldSet::SerializeToString and SerializeToCodedStream.
• Remove explicit default pointers and deprecated API from protocol compiler

Arenas

• Change Repeated*Field to reuse memory when using arenas.
• Implements pbarenaz for profiling proto arenas
• Introduce CreateString() and CreateArenaString() for cleaner semantics
• Fix unreferenced parameter for MSVC builds
• Add UnsafeSetAllocated to be used for one-of string fields.
• Make Arena::AllocateAligned() a public function.
• Determine if ArenaDtor related code generation is necessary in one place.
• Implement on demand register ArenaDtor for InlinedStringField

C++

• Enable testing via CTest (#​8737)
• Add option to use external GTest in CMake (#​8736)
• CMake: Set correct sonames for libprotobuf-lite.so and libprotoc.so (#​8635) (#​9529)
• Add cmake option protobuf_INSTALL to not install files (#​7123)
• CMake: Allow custom plugin options e.g. to generate mocks (#​9105)
• CMake: Use linker version scripts (#​9545)
• Manually *struct Cord fields to work better with arenas.
• Manually destruct map fields.
• Generate narrower code
• Fix #​9378 by removing
  shadowed cached_size field
• Remove GetPointer() and explicit nullptr defaults.
• Add proto_h flag for speeding up large builds
• Add missing overload for reference wrapped fields.
• Add MergedDescriptorDatabase::FindAllFileNames()
• RepeatedField now defines an iterator type instead of using a pointer.
• Remove obsolete macros GOOGLE_PROTOBUF_HAS_ONEOF and GOOGLE_PROTOBUF_HAS_ARENAS.

PHP

• Fix: add missing reserved classnames (#​9458)
• PHP 8.1 compatibility (#​9370)

C#

• Fix trim warnings (#​9182)
• Fixes NullReferenceException when accessing FieldDescriptor.IsPacked (#​9430)
• Add ToProto() method to all descriptor classes (#​9426)
• Add an option to preserve proto names in JsonFormatter (#​6307)

Objective-C

• Add prefix_to_proto_package_mappings_path option. (#​9498)
• Rename proto_package_to_prefix_mappings_path to package_to_prefix_mappings_path. (#​9552)
• Add a generation option to control use of forward declarations in headers. (#​9568)

v3.19.6: Protocol Buffers v3.19.6

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Java

• Refactoring java full runtime to reuse sub-message builders and prepare to
  migrate parsing logic from parse constructor to builder.
• Move proto wireformat parsing functionality from the private "parsing
  constructor" to the Builder class.
• Change the Lite runtime to prefer merging from the wireformat into mutable
  messages rather than building up a new immutable object before merging. This
  way results in fewer allocations and copy operations.
• Make message-type extensions merge from wire-format instead of building up
  instances and merging afterwards. This has much better performance.
• Fix TextFormat parser to build up recurring (but supposedly not repeated)
  sub-messages directly from text rather than building a new sub-message and
  merging the fully formed message into the existing field.
• This release addresses a Security Advisory for Java users

v3.19.5: Protocol Buffers v3.19.5

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C++

• Reduce memory consumption of MessageSet parsing
• This release addresses a Security Advisory for C++ and Python users

v3.19.4: Protocol Buffers v3.19.4

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Python

• Make libprotobuf symbols local on OSX to fix issue #​9395 (#​9435)

Ruby

• Fixed a data loss bug that could occur when the number of optional fields in a message is an exact multiple of 32. (#​9440).

PHP

• Fixed a data loss bug that could occur when the number of optional fields in a message is an exact multiple of 32. (#​9440).

v3.19.3: Protocol Buffers v3.19.3

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Python

• Fix missing Windows wheel for Python 3.10 on PyPI

v3.19.2: Protocol Buffers v3.19.2

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Java

• Improve performance characteristics of UnknownFieldSet parsing (#​9371)
• This release addresses a Security Advisory for Java users

v3.19.1: Protocol Buffers v3.19.1

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Bazel

• Ensure that release archives contain everything needed for Bazel (#​9131)
• Align dependency handling with Bazel best practices (#​9165)

JavaScript

• Fix ReferenceError: window is not defined when getting the global object (#​9156)

Ruby

• Fix memory leak in MessageClass.encode (#​9150)

v3.19.0: Protocol Buffers v3.19.0

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C++

• Make proto2::Message::DiscardUnknownFields() non-virtual
• Separate RepeatedPtrField into its own header file
• For default floating point values of 0, consider all bits significant
• cmake: support MSVC_RUNTIME_LIBRARY property (#​8851)
• Fix shadowing warnings (#​8926)
• Fix for issue #​8484, constant initialization doesn't compile in msvc clang-cl environment (#​8993)
• Fix build on AIX and SunOS (#​8373) (#​9065)
• Add Android stlport and default toolchains to BUILD. (#​8290)

Java

• For default floating point values of 0, consider all bits significant
• Annotate //java/com/google/protobuf/util/... with nullness annotations
• Use ArrayList copy constructor (#​7853)

Kotlin

• Switch Kotlin proto DSLs to be implemented with inline value classes
• Fixing inlining and deprecation for repeated string fields (#​9120)

Python

• Proto2 DecodeError now includes message name in error message
• Make MessageToDict convert map keys to strings (#​8122)
• Add python-requires in setup.py (#​8989)
• Add python 3.10 (#​9034)

JavaScript

• Skip exports if not available by CommonJS (#​8856)
• JS: Comply with CSP no-unsafe-eval. (#​8864)

PHP

• Added "object" as a reserved name for PHP (#​8962)

Ruby

• Override Map.clone to use Map's dup method (#​7938)
• Ruby: build extensions for arm64-darwin (#​8232)
• Add class method Timestamp.from_time to ruby well known types (#​8562)
• Adopt pure ruby DSL implementation for JRuby (#​9047)
• Add size to Map class (#​8068)
• Fix for descriptor_pb.rb: google/protobuf should be required first (#​9121)

C#

• Correctly set ExtensionRegistry when parsing with MessageParser, but using an already existing CodedInputStream (#​7246)
• [C#] Make FieldDescriptor propertyName public (#​7642)

v3.18.3: Protocol Buffers v3.18.3

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C++

• Reduce memory consumption of MessageSet parsing
• This release addresses a Security Advisory for C++ and Python users

v3.18.2: Protocol Buffers v3.18.2

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Java

• Improve performance characteristics of UnknownFieldSet parsing (#​9371)

v3.18.1: Protocol Buffers v3.18.1

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Python

• Update setup.py to reflect that we now require at least Python 3.5 (#​8989)
• Performance fix for DynamicMessage: force GetRaw() to be inlined (#​9023)

Ruby

• Update ruby_generator.cc to allow proto2 imports in proto3 (#​9003)

v3.18.0: Protocol Buffers v3.18.0

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C++

• Fix warnings raised by clang 11 (#​8664)
• Make StringPiece constructible from std::string_view (#​8707)
• Add missing capability attributes for LLVM 12 (#​8714)
• Stop using std::iterator (deprecated in C++17). (#​8741)
• Move field_access_listener from libprotobuf-lite to libprotobuf (#​8775)
• Fix #​7047 Safely handle setlocale (#​8735)
• Remove deprecated version of SetTotalBytesLimit() (#​8794)
• Support arena allocation of google::protobuf::AnyMetadata (#​8758)
• Fix undefined symbol error around SharedCtor() (#​8827)
• Fix default value of enum(int) in json_util with proto2 (#​8835)
• Better Smaller ByteSizeLong
• Introduce event filters for inject_field_listener_events
• Reduce memory usage of DescriptorPool
• For lazy fields copy serialized form when allowed.
• Re-introduce the InlinedStringField class
• v2 access listener
• Reduce padding in the proto's ExtensionRegistry map.
• GetExtension performance optimizations
• Make tracker a static variable rather than call static functions
• Support extensions in field access listener
• Annotate MergeFrom for field access listener
• Fix incomplete types for field access listener
• Add map_entry/new_map_entry to SpecificField in MessageDifferencer. They
  record the map items which are different in MessageDifferencer's reporter.
• Reduce binary size due to fieldless proto messages
• TextFormat: ParseInfoTree supports getting field end location in addition to
  start.
• Fix repeated enum extension size in field listener
• Enable Any Text Expansion for Descriptors::DebugString()
• Switch from int{8,16,32,64} to int{8,16,32,64}_t

Java

• Fix errorprone conflict (#​8723)
• Removing deprecated TimeUtil class. (#​8749)
• Optimized FieldDescriptor.valueOf() to avoid array copying.
• Removing deprecated TimeUtil class.
• Add Durations.parseUnchecked(String) and Timestamps.parseUnchecked(String)
• FieldMaskUtil: Add convenience method to mask the fields out of a given proto.

JavaScript

• Optimize binary parsing of repeated float64
• Fix for optimization when reading doubles from binary wire format
• Replace toArray implementation with toJSON.

PHP

• Migrate PHP & Ruby to ABSL wyhash (#​8854)
• Added support for PHP 8.1 (currently in RC1) to the C extension (#​8964)
• Fixed PHP SEGV when constructing messages from a destructor. (#​8969)

Ruby

• Move DSL implementation from C to pure Ruby (#​8850)
• Fixed a memory bug with RepeatedField#+. (#​8970)

Python

• Drops support for 2.7 and 3.5.

Other

• [csharp] ByteString.CreateCodedInput should use ArraySegment offset and count (#​8740)
• [ObjC] Add support for using the proto package to prefix symbols. (#​8760)
• field_presence.md: fix Go example (#​8788)