Protocol Buffers v27.3

Announcements

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

Compiler

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

C++

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

Java

• Omit the _raw_default_instance_ declaration when using DLL linkage. (22d9a03)

PHP

PHP C-Extension

• Fix segmentation faults with enabled keep_descriptor_pool_after_request (#16993) (ca3b732)

Ruby

Ruby C-Extension

• [Ruby] Fix mismatched pointer type (#17240) (a1d4777)

Other

• Remove /utf-8 flag added in #14197 (e20cb7a)
• Downgrade CMake to 3.29 to workaround Abseil issue. (8a579c1)
• Upgrade macos-11 tests to macos-12 (aec8a76)
• Use explicit names of our large runners (4e3b4f0)
• Upgrade our C++ release tests to large runners. (fa2b2d6)