What's Changed

• YJIT: Split the block on optimized getlocal/setlocal by k0kubun · Pull Request #13331
• Bug #21257: YJIT can generate infinite loop when OOM - Ruby - Ruby Issue Tracking System
• Bug #21286: Windows - MSYS2 just updated to GCC 15.1.0, builds failing - Ruby - Ruby Issue Tracking System
• Bug #21327: Windows builds seem broken after clock_gettime changes? - Ruby - Ruby Issue Tracking System
• Bug #21331: heap-use-after-free caused by rehash during transform_values! - Ruby - Ruby Issue Tracking System
• Bug #21289: Fix C level backtraces for USE_ELF - Ruby - Ruby Issue Tracking System

Note: This list is automatically generated by tool/gen-github-release.rb. Because of this, some commits may be missing.

Full Changelog

v3_4_3...v3_4_4

What's Changed

• Bug #21145: Prism accepts newlines in-between curly unicode escape - Ruby - Ruby Issue Tracking System
• Bug #21153: ::Foo ||= p 1 should parse - Ruby - Ruby Issue Tracking System
• Bug #21030: Bug: #step with Range<ActiveSupport::Duration> behavior broken on Ruby 3.4.1 - Ruby - Ruby Issue Tracking System
• Bug #21131: IO.copy_stream: yielded string changes value when duped - Ruby - Ruby Issue Tracking System
• Feature #19521: Support for Module#name= and Class#name=. - Ruby - Ruby Issue Tracking System
• Bug #21159: Module#set_temporary_name should freeze given name - Ruby - Ruby Issue Tracking System
• Bug #21161: Crash when locale is set to Turkish tr_TR.UTF-8 - Ruby - Ruby Issue Tracking System
• Bug #21144: Win32: Use Windows time zone ID as the time zone name if TZ is not set - Ruby - Ruby Issue Tracking System
• Bug #21170: Corrupted Hash (bad VALUE and missing entry) when -1 returned from .hash - Ruby - Ruby Issue Tracking System
• Bug #21172: Race condition in register_fstring - Ruby - Ruby Issue Tracking System
• Bug #21163: Inconsistencies in Kernel.Float compared to other number parsing methods - Ruby - Ruby Issue Tracking System
• Bug #21173: RUBY_FREE_AT_EXIT does not work when error in -r - Ruby - Ruby Issue Tracking System
• Bug #21179: Introduction Happy Eyeballs Version 2 broke Socket.tcp from secondary Ractors - Ruby - Ruby Issue Tracking System
• Bug #19841: Marshal.dump stack overflow with recursive Time - Ruby - Ruby Issue Tracking System
• Bug #21180: SEGV while marking imemo_env->iseq - Ruby - Ruby Issue Tracking System
• Bug #21186: Inconsistent parsing of ?あand 0 - Ruby - Ruby Issue Tracking System
• Bug #21094: Module#set_temporary_name does not affect a name of a nested module - Ruby - Ruby Issue Tracking System
• Bug #21195: Crash when using IO#timeout - Ruby - Ruby Issue Tracking System
• Bug #21196: Ruby 3.4 ignores visibility when passing arguments using ... - Ruby - Ruby Issue Tracking System
• Bug #21141: Time#utc? does not work with a timezone object - Ruby - Ruby Issue Tracking System
• Bug #21211: Incomplete Backtrace for Socket Errors in Ruby 3.4+ - Ruby - Ruby Issue Tracking System
• Bug #21197: Prism does not accept newline after defined? keyword - Ruby - Ruby Issue Tracking System
• Bug #21183: Ractor error with Prism::VERSION - Ruby - Ruby Issue Tracking System
• Bug #21217: Integer.sqrt produces wrong results even on input <= 1e18 - Ruby - Ruby Issue Tracking System
• Bug #21220: Memory corruption in update_line_coverage() [write at index -1] - Ruby - Ruby Issue Tracking System

Note: This list is automatically generated by tool/gen-github-release.rb. Because of this, some commits may be missing.

Full Changelog

v3_4_2...v3_4_3

What's Changed

• Bump net-imap to 0.4.19 for Ruby 3.3 (CVE-2025-25186) by nevans · Pull Request #12732
• Bug #21170: Corrupted Hash (bad VALUE and missing entry) when -1 returned from .hash - Ruby - Ruby Issue Tracking System
• Bug #20951: Confusing handling of timezone object's #utc_to_local results - Ruby - Ruby Issue Tracking System
• Bug #21046: Backport: TLS fix for ARM64 - Ruby - Ruby Issue Tracking System
• Bug #21032: Module#autoload? is slow when $LOAD_PATH contains a relative path - Ruby - Ruby Issue Tracking System
• Bug #21095: Prefer uname -n over hostname in tests. - Ruby - Ruby Issue Tracking System
• Bug #21112: Typo in error message when an incorrect key is used with WeakKeyMap - Ruby - Ruby Issue Tracking System
• Bug #21092: error building ruby 3.4.1 on cygwin/msys2 - Ruby - Ruby Issue Tracking System
• Bug #21159: Module#set_temporary_name should freeze given name - Ruby - Ruby Issue Tracking System
• Bug #21172: Race condition in register_fstring - Ruby - Ruby Issue Tracking System
• Bug #21144: Win32: Use Windows time zone ID as the time zone name if TZ is not set - Ruby - Ruby Issue Tracking System
• Bug #21180: SEGV while marking imemo_env->iseq - Ruby - Ruby Issue Tracking System
• Bug #21131: IO.copy_stream: yielded string changes value when duped - Ruby - Ruby Issue Tracking System
• Bug #19841: Marshal.dump stack overflow with recursive Time - Ruby - Ruby Issue Tracking System
• Bug #21186: Inconsistent parsing of ?あand 0 - Ruby - Ruby Issue Tracking System
• Bug #21094: Module#set_temporary_name does not affect a name of a nested module - Ruby - Ruby Issue Tracking System
• Bug #21195: Crash when using IO#timeout - Ruby - Ruby Issue Tracking System
• Bug #20984: ENV.inspect is not encoding aware - Ruby - Ruby Issue Tracking System
• Bug #21027: not() receiver should be nil - Ruby - Ruby Issue Tracking System
• Bug #21217: Integer.sqrt produces wrong results even on input <= 1e18 - Ruby - Ruby Issue Tracking System
• Bug #21141: Time#utc? does not work with a timezone object - Ruby - Ruby Issue Tracking System

Note: This list is automatically generated by tool/gen-github-release.rb. Because of this, some commits may be missing.

Full Changelog

v3_3_7...v3_3_8

Security fixes

• CVE-2025-27219, CVE-2025-27220 and CVE-2025-27221

What's Changed

• Bug #21092: error building ruby 3.4.1 on cygwin/msys2 - Ruby - Ruby Issue Tracking System
• Bug #21170: Corrupted Hash (bad VALUE and missing entry) when -1 returned from .hash - Ruby - Ruby Issue Tracking System
• Bug #21144: Win32: Use Windows time zone ID as the time zone name if TZ is not set - Ruby - Ruby Issue Tracking System
• Bug #18257: rb_mRubyVMFrozenCore is broken by GC run - Ruby - Ruby Issue Tracking System
• Bug #21032: Module#autoload? is slow when $LOAD_PATH contains a relative path - Ruby - Ruby Issue Tracking System
• Bug #21131: IO.copy_stream: yielded string changes value when duped - Ruby - Ruby Issue Tracking System
• Bug #19584: Crash in rb_gc_register_address - Ruby - Ruby Issue Tracking System
• Bug #21180: SEGV while marking imemo_env->iseq - Ruby - Ruby Issue Tracking System
• Bug #20025: Parsing identifiers/constants is case-folding dependent - Ruby - Ruby Issue Tracking System
• Bug #19426: Endless Range#step of object with #succ method does not work - Ruby - Ruby Issue Tracking System

Note: This list is automatically generated by tool/gen-github-release.rb. Because of this, some commits may be missing.

Full Changelog

v3_2_7...v3_2_8

Security fixes

• CVE-2025-27219, CVE-2025-27220 and CVE-2025-27221
• Update REXML-3.3.4 and rss-0.3.1 as bundled gems

What's Changed

• Bug #20516: The version of rexml in ruby 3.3.2 has not been updated since 3.2.6. - Ruby - Ruby Issue Tracking System
• Improve base time of assert_linear_performance by tompng · Pull Request #11369

Note: This list is automatically generated by tool/gen-github-release.rb. Because of this, some commits may be missing.

Full Changelog

v3_1_6...v3_1_7

What's Changed

• Bug #21024: Ruby including generates compilation warning with GCC 15, header is deprecated in C++17,
• Bug #21021: "try to mark T_NONE object" with 3.4.1
• Bug #20997: YJIT panic assertion left == right failed: leave instruction expects stack size 1, but was: 2
• Bug #20981: rb_undefine_finalizer is missing
• Bug #20989: Segmentation fault in Ripper when lexing /#{"\xcd"}/
• Bug #21003: unexpected warning about ignored block
• Bug #21002: Please include license information of turbo_tests
• Bug #21001: unexpected nil result from proc with ensure and next
• Bug #21010: Endless method definition of []= is SyntaxError in parse.y but allowed in Prism
• Bug #20992: eval(ascii_encoded_code) raises EncodingError when multibyte local variable exists
• Bug #21017: --with-parser=parse.y configure option does not work
• Bug #21014: Prism doesn't set node_id on iseqs correctly
• Bug #21027: not() receiver should be nil
• Bug #20995: exception escapes block given to IO.popen("-") in child process
• Bug #21008: Array#sum, Enumerator#sum, Numeric subclass
• Bug #21044: Prism maximum recursion depth is 1_000, parse.y is 10_000
• Bug #21031: Incompatibility with prism and parse.y when eval'ing unnamed forwarding variables
• Bug #21085: [BUG] Stack consistency error with -ne
• Bug #21048: [Prism] rescue in modifier form with condition behaves differently
• Bug #21046: Backport: TLS fix for ARM64
• Bug #21012: Compiling a['a','b'],=1 with parse.y fails
• Bug #21038: Preserve errno in rb_fiber_scheduler_unblock
• Bug #21032: Module#autoload? is slow when $LOAD_PATH contains a relative path
• Bug #21092: error building ruby 3.4.1 on cygwin/msys2
• Bug #21095: Prefer uname -n over hostname in tests.
• Bug #21103: Binding problem with delegate methods
• Bug #21088: TCPSocket.new raises Socket::ResolutionError instead of Errno::ECONNREFUSED for hosts defined in /etc/hosts
• Bug #21112: Typo in error message when an incorrect key is used with WeakKeyMap
• Bug #21117: Inconsistent behaviour between "_1" and "it" variables
• Bug #21114: Prism hangs up while parsing deeply nested def
• Bug #20984: ENV.inspect is not encoding aware
• Bug #20982: Inconsistency between Hash#inspect and ENV.inspect in Ruby 3.4

Note: This list is automatically generated by tool/gen-github-release.rb. Because of this, some commits may be missing.

Full Changelog

v3_4_1...v3_4_2

What's Changed

• Bug #20853: Hash key retrieval after Process.warmup
• Bug #20868: Method#hash changes after compaction
• Bug #20883: sprintf with binary strings has incorrect coderange
• Bug #20873: printf("%f") returns wrong result for Rational with FIXNUM_MIN
• Bug #20898: Backport https://github.com/ruby/ruby/pull/9737 to Ruby 3.3 and 3.2
• Bug #20871: Including methods in Enumerable doesn't make them available in Array
• Bug #20907: Fiber scheduler does not correctly re-lock mutex if Mutex#sleep is interrupted.
• Bug #20909: Backport String indexing bug fixes
• Bug #20921: Use-after-free in constant cache
• Bug #20915: Segfault with TracePoint#parameters and aliased C method
• Bug #20447: Ruby 3.3.1 broken on i686 due to "incompatible pointer type" error
• Bug #20924: IO#readline ignores the limit argument when the encoding is UTF-32LE and the limit would split a character
• Bug #20984: ENV.inspect is not encoding aware
• Bug #20995: exception escapes block given to IO.popen("-") in child process
• Bug #21008: Array#sum, Enumerator#sum, Numeric subclass
• Bug #21012: Compiling a['a','b'],=1 with parse.y fails
• Bug #21038: Preserve errno in rb_fiber_scheduler_unblock
• Bug #20997: YJIT panic assertion left == right failed: leave instruction expects stack size 1, but was: 2

Note: This list is automatically generated by tool/gen-github-release.rb. Because of this, some commits may be missing.

Full Changelog

v3_2_6...v3_2_7

What's Changed

• Bug #20883: sprintf with binary strings has incorrect coderange
• Bug #20886: Crash due to double free on regex timeout after stack allocations
• Bug #20892: ObjectSpace.dump can produce broken JSON for classes with temporary names
• [Backport 3.3] wasm: align fiber stack pointer to 16 bytes by kateinoigakukun · Pull Request #12101
• Bug #20787: IO#readline does not check its arguments like IO#gets and will read more data than limit
• Bug #20868: Method#hash changes after compaction
• Bug #20873: printf("%f") returns wrong result for Rational with FIXNUM_MIN
• Bug #20907: Fiber scheduler does not correctly re-lock mutex if Mutex#sleep is interrupted.
• Bug #20871: Including methods in Enumerable doesn't make them available in Array
• Bug #20909: Backport String indexing bug fixes
• Bug #20915: Segfault with TracePoint#parameters and aliased C method
• Bug #20921: Use-after-free in constant cache
• Bug #20924: IO#readline ignores the limit argument when the encoding is UTF-32LE and the limit would split a character
• Bug #20950: Use-after-free in ep in Proc#dup for ifunc procs
• Bug #21012: Compiling a['a','b'],=1 with parse.y fails
• Bug #20984: ENV.inspect is not encoding aware
• Bug #20995: exception escapes block given to IO.popen("-") in child process
• Bug #21008: Array#sum, Enumerator#sum, Numeric subclass
• Bug #21038: Preserve errno in rb_fiber_scheduler_unblock
• Bug #20997: YJIT panic assertion left == right failed: leave instruction expects stack size 1, but was: 2

Note: This list is automatically generated by tool/gen-github-release.rb. Because of this, some commits may be missing.

Full Changelog

v3_3_6...v3_3_7

What's Changed

This version only changed version number of Ruby 3.4.0.

Full Changelog

v3_4_0...v3_4_1

This release only listed between 3.4.0-rc1 and 3.4.0 final release. See also 3.4.0-preview1, 3.4.0-preview2 and 3.4.0-rc1.

What's Changed

• Launchable: Start recording test-spec results by ono-max · Pull Request #12302
• Feature #20884: reserve "Ruby" toplevel module for Ruby language
• Feature #20875: Atomic initialization for Ractor local storage
• [DOC] Fix grammar errors, typos, and improve readability of trace_point.rb by st0012 · Pull Request #12150
• Bug #20918: Prism error indicates line number of -e that does not exist
• Feature #20861: Add an environment variable for tuning the default thread quantum
• [DOC] Improve formatting in Markdown files by amomchilov · Pull Request #12322
• Improve "Building Ruby" docs by amomchilov · Pull Request #12320
• get rid of unknown error on travis-ci by nobu · Pull Request #1171
• Launchable: Refactor entrypoint.sh by ono-max · Pull Request #12314
• Bug #20950: Use-after-free in ep in Proc#dup for ifunc procs
• YJIT: Speculate block arg for c_func_method(&nil) calls by XrXr · Pull Request #12326
• [DOC] Fix incorrect Array#fetch_values examples by kyanagi · Pull Request #12337
• [DOC] Improve array.rb documentation by alexcrocha · Pull Request #12340
• Feature #20205: Enable frozen_string_literal by default
• Bug #20952: A weird error message for []= with keyword arguments
• Bug #20638: Threads not collected by GC under RUBY_MN_THREADS=1
• Improve APIs for Globally Enabling/Disabling fast_fallback in Socket by shioimm · Pull Request #12257
• Update NEWS.md for Socket.tcp and TCPSocket.new by shioimm · Pull Request #12347
• Bug #20927: { **{ } } behaves differently when shareable_constant_value: experimental_everything
• Bug #20951: Confusing handling of timezone object's #utc_to_local results
• Bug #20940: Colored syntax error from prism
• [DOC] Adjust argument unpacking docs and document **nil by zverok · Pull Request #12228
• Bug #20954: Ractor.main? returns 0 on the main ractor
• Bug #20785: Should a in b, and c a in b, or c a in b, rescue c be syntax ok?
• Add back summary table for pack/unpack directives by eregon · Pull Request #12349
• Fix constant documents by soutaro · Pull Request #12357
• Launchable: Start recording test-spec in compilers.yaml by ono-max · Pull Request #12364
• Bug #20956: Nested alternation pattern matching bug in 3.4.0-rc1
• [DOC] Change arg names from n to count by BurdetteLamar · Pull Request #12288
• YJIT: Load registers on JIT entry to reuse blocks by k0kubun · Pull Request #12355
• [DOC] Added references of github releases for bundled gems by hsbt · Pull Request #12365
• Wrap do_fast_fallback_getaddrinfo with rb_thread_prevent_fork by shioimm · Pull Request #12366
• Bug #20963: compile error due to lack of MAYBE_UNUSED macro e.g. Oracle Developer Studio 12.x on Solaris 10
• Bug #20433: Hash.inspect for some hash returns syntax invalid representation
• Document 'it' and update numbered parameters docs by zverok · Pull Request #12375
• Bug #20965: it vs binding.local_variables
• Bug #20969: Segmentation fault with Ripper.lex '/(?<_1>)/=~s'
• Bundle rbs-3.8 by soutaro · Pull Request #12399
• Bug #20942: Infinite loop when out of memory
• Fix tests for fast_fallback by shioimm · Pull Request #12406
• Bug #20973: it in pattern matching pin operator causes BUG
• [DOC] Refresh standard libraries page by st0012 · Pull Request #12404
• Bug #20916: Prism compiler should support ** in Ractor constant
• Properly document Ractor#require by zverok · Pull Request #12389
• [DOC] Move Time#xmlschema docs to the core by zverok · Pull Request #12403
• Bug #3456: bisarre comma
• Improve doc for Socket::ResolutionError by shioimm · Pull Request #12434
• Bug #20978: Ractor[]/Thread[]/Fiber[] behavior difference
• YJIT: Return None if entry block compilation fails by k0kubun · Pull Request #12445
• Bug #20779: Un-rescuable thread creation limit on Mac
• Bug #19562: Setting default_(in|ex)ternal encoding after running an Ractor freezes ruby
• Bug #20929: TestTime have an assertion different from current implementation.
• Bug #20979: +comment does not affect parsetree without --parser=parse.y
• Bundle rbs-3.8.0 by soutaro · Pull Request #12453
• Introduce a timeout to prevent rb_thread_fd_select from hanging with write(2) failure by shioimm · Pull Request #12457
• [DOC] Adjust documentation related to backtraces by zverok · Pull Request #12420

Note: This list is automatically generated by tool/gen-github-release.rb. Because of this, some commits may be missing.

Full Changelog

v3_4_0_rc1...v3_4_0