Sourced from protobuf's releases.

Protocol Buffers v3.15.8

Ruby

• Fixed memory leak of Ruby arena objects (#8461)

Protocol Buffers v3.15.7

C++

• Remove the ::pb namespace (alias) (#8423)

Ruby

• Fix unbounded memory growth for Ruby <2.7 (#8429)
• Fixed message equality in cases where the message type is different (#8434)

Protocol Buffers v3.15.6

Ruby

• Fixed bug in string comparison logic (#8386)

Protocol Buffers v3.15.5

Ruby

• Fixed quadratic memory use in array append (#8379)

PHP

• Fixed quadratic memory use in array append (#8379)

C++

• Do not disable RTTI by default in the CMake build (#8377)

Protocol Buffers v3.15.4

Ruby

• Fixed SEGV when users pass nil messages (#8363)
• Fixed quadratic memory usage when appending to arrays (#8364)

C++

• Create a CMake option to control whether or not RTTI is enabled (#8361)

PHP

• read_property() handler is not supposed to return NULL (#8362)

Protocol Buffers v3.15.3

Ruby

• Ruby <2.7 now uses WeakMap too, which prevents memory leaks. (#8341)

Protocol Buffers v3.15.2

Ruby

• Fix for FieldDescriptor.get(msg) (#8330)

C++

• Fix PROTOBUF_CONSTINIT macro redefinition (#8323)

Protocol Buffers v3.15.1

Ruby

... (truncated)

• 436bd78 Updated version to 3.15.8 (#8463)
• 1ed9a8b Merge pull request #8461 from haberman/ruby-arena-memory-leak
• 67fee91 Fixed memory leak of Ruby arena objects.
• 878be35 Update protobuf version
• c00c2d4 Updated CHANGES.txt and package.xml with changes for 3.15.7
• 240e54e Remove references to stale benchmark data sources.
• f3f8707 Merge pull request #8434 from haberman/ruby-message-eq
• 38e1b59 Elided the TYPE() and msgdef checks by using CLASS_OF.
• d69f482 Fixed message equality in cases where the message type is different.
• a38319b Merge pull request #8429 from haberman/ruby-gc-secondarymap
• Additional commits viewable in compare view

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