protobuf changelog

Changelog History

Page 1

• v4.0.0-rc2

  July 21, 2020

• v4.0.0-rc1 Changes

  July 15, 2020

  Note: This release bumps the major version due to backward-incompatible changes in PHP.

  PHP is the only language that has breaking changes in this release.

  PHP

  • The C extension is completely rewritten. The new C extension has significantly
    👍 better parsing performance and fixes a handful of conformance issues. It will
    👍 also make it easier to add support for more features like proto2 and proto3 presence.
  • 👍 The new C extension does not support PHP 5.x, which is the reason for the major
    🔖 version bump. PHP 5.x users can still use pure-PHP.

  C++:

  • ✂ Removed deprecated unsafe arena string accessors
  • Enabled heterogeneous lookup for std::string keys in maps.
  • ✂ Removed implicit conversion from StringPiece to std::string
  • 🛠 Fix use-after-destroy bug when the Map is allocated in the arena.
  • 👌 Improved the randomness of map ordering
  • ➕ Added stack overflow protection for text format with unknown fields
  • 👉 Use std::hash for proto maps to help with portability.
  • ➕ Added more Windows macros to proto whitelist.
  • Arena constructors for map entry messages are now marked "explicit"
    (for regular messages they were already explicit).
  • 🛠 Fix subtle aliasing bug in RepeatedField::Add
  • 🛠 Fix mismatch between MapEntry ByteSize and Serialize with respect to unset
    fields.

  Python:

  • 🛠 JSON format conformance fixes:
    • Reject lowercase t for Timestamp json format.
    • Print full_name directly for extensions (no camelCase).
    • Reject boolean values for integer fields.
    • Reject NaN, Infinity, -Infinity that is not quoted.
    • Base64 fixes for bytes fields: accept URL-safe base64 and missing padding.
  • 🛠 Bugfix for fields/files named "async" or "await".
  • Improved the error message when AttributeError is returned from getattr
    in EnumTypeWrapper.

  Java:

  • 🛠 Fixed a bug where setting optional proto3 enums with setFooValue() would
    not mark the value as present.
  • ➕ Add Subtract function to FieldMaskUtil.

  C#:

  • ⬇️ Dropped support for netstandard1.0 (replaced by support for netstandard1.1).
    📜 This was required to modernize the parsing stack to use the Span<byte>
    type internally. (#7351)
  • ➕ Add ParseFrom(ReadOnlySequence<byte>) method to enable GC friendly
    📜 parsing with reduced allocations and buffer copies. (#7351)
  • ➕ Add support for serialization directly to a IBufferWriter<byte> or
    to a Span<byte> to enable GC friendly serialization.
    The new API is available as extension methods on the IMessage type. (#7576)
  • Add GOOGLE_PROTOBUF_REFSTRUCT_COMPATIBILITY_MODE define to make
    generated code compatible with old C# compilers (pre-roslyn compilers
    👍 from .NET framework and old versions of mono) that do not support
    ref structs. Users that are still on a legacy stack that does
    👍 not support C# 7.2 compiler might need to use the new define
    🏗 in their projects to be able to build the newly generated code. (#7490)
  • 📜 Due to the major overhaul of parsing and serialization internals (#7351 and #7576),
    it is recommended to regenerate your generated code to achieve the best
    🐎 performance (the legacy generated code will still work, but might incur
    🐎 a slight performance penalty).

• v3.14.0 Changes

  November 13, 2020

  Protocol Compiler

  • The proto compiler no longer requires a .proto filename when it is not
    generating code.
  • ➕ Added flag --deterministic_output to protoc --encode=....
  • 🛠 Fixed deadlock when using google.protobuf.Any embedded in aggregate options.

  C++

  • Arenas are now unconditionally enabled. cc_enable_arenas no longer has
    any effect.
  • ✂ Removed inlined string support, which is incompatible with arenas.
  • 🛠 Fix a memory corruption bug in reflection when mixing optional and
    non-optional fields.
  • 👉 Make SpaceUsed() calculation more thorough for map fields.
  • ➕ Add stack overflow protection for text format with unknown field values.
  • 🚦 FieldPath::FollowAll() now returns a bool to signal if an out-of-bounds
    error was encountered.
  • 🐎 Performance improvements for Map.
  • Minor formatting fix when dumping a descriptor to .proto format with
    DebugString.
  • UBSAN fix in RepeatedField (#2073).
  • ✅ When running under ASAN, skip a test that makes huge allocations.
  • 🛠 Fixed a crash that could happen when creating more than 256 extensions in
    a single message.
  • 🛠 Fix a crash in BuildFile when passing in invalid descriptor proto.
  • 🔒 Parser security fix when operating with CodedInputStream.
  • Warn against the use of AllowUnknownExtension.
  • Migrated to C++11 for-range loops instead of index-based loops where
    ⚠ possible. This fixes a lot of warnings when compiling with -Wsign-compare.
  • 🛠 Fix segment fault for proto3 optional (#7805)
  • ➕ Adds a CMake option to build libprotoc separately (#7949)

  Java

  • 🛠 Bugfix in mergeFrom() when a oneof has multiple message fields.
  • 🛠 Fix RopeByteString.RopeInputStream.read() returning -1 when told to read
    0 bytes when not at EOF.
  • 🚚 Redefine remove(Object) on primitive repeated field Lists to avoid
    autoboxing.
  • 👌 Support "\u" escapes in textformat string literals.
  • Trailing empty spaces are no longer ignored for FieldMask.
  • 🛠 Fix FieldMaskUtil.subtract to recursively remove mask.
  • 🗄 Mark enums with @java.lang.Deprecated if the proto enum has option
    🗄 deprecated = true;.
  • ➕ Adding forgotten duration.proto to the lite library (#7738)

  Python

  • 🖨 Print google.protobuf.NullValue as null instead of "NULL_VALUE" when it is
    👉 used outside WKT Value/Struct.
  • 🛠 Fix bug occurring when attempting to deep copy an enum type in python 3.
  • ➕ Add a setuptools extension for generating Python protobufs (#7783)
  • ✂ Remove uses of pkg_resources in non-namespace packages. (#7902)
  • [bazel/py] Omit google/ init.py from the Protobuf runtime. (#7908)
  • ✂ Removed the unnecessary setuptools package dependency for Python package (#7511)
  • 🛠 Fix PyUnknownFields memory leak (#7928)

  PHP

  • ➕ Added support for "==" to the PHP C extension (#7883)
  • ➕ Added == operators for Map and Array. (#7900)
  • Native C well-known types (#7944)
  • ⚡️ Optimized away hex2bin() call in generated code (#8006)
  • 🆕 New version of upb, and a new hash function wyhash in third_party. (#8000)
  • ➕ add missing hasOneof method to check presence of oneof fields (#8003)

  Go

  • ⚡️ Update go_package options to reference google.golang.org/protobuf module.

  C

  • 🚑 annotate ByteString.CopyFrom(ReadOnlySpan) as SecuritySafeCritical (#7701)
  • 🛠 Fix C# optional field reflection when there are regular fields too (#7705)
  • 🛠 Fix parsing negative Int32Value that crosses segment boundary (#8035)

  Javascript

  • 📜 JS: parse (un)packed fields conditionally (#7379)

• v3.14.0-rc3

  November 12, 2020

• v3.14.0-rc2

  November 11, 2020

• v3.14.0-rc1

  November 06, 2020

• v3.13.0

  August 15, 2020

• v3.13.0-rc3

  August 13, 2020

• v3.13.0.1

  October 08, 2020

• v3.12.4

  July 29, 2020

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