What's Changed

• Bug #20468: Segfault on safe navigation in for target
• Bug #20493: Segfault on rb_io_getline_fast
• Bug #20494: Non-default directories are not searched when checking for a gmp header
• Bug #20499: Ruby builds on macOS store absolute paths for AR and NM in rbconfig since Ruby 3.2.3/3.3.0
• Bug #20500: Non-system directories are not searched when checking for jemalloc headers and libs, and building enc
• Bug #20510: File.open mode argument inconsistency
• Bug #20314: Simultaneous Timeout expires may raise an exception after the block
• Feature #20205: Enable frozen_string_literal by default
• Misc #20507: Allow C extensions to be compiled cleanly with the -Wsign-conversion warning option
• Bug #20512: Order of magnitude performance differenfce in single character slicing UTF-8 strings before and after length method is executed
• Bug #20438: String format "%\n" and "%\0" does not raise format error
• YJIT: limit size of call count stats dict by maximecb · Pull Request #10858
• Bug #20515: --with-gmp is not working - GMP support won't be built
• Bug #20496: Segfault when enabling YJIT
• Feature #20497: Tempfile.create_io
• Bug #20517: Ripper.tokenize('"\\M-あ"') separates encoding valid string to encoding invalid string.
• YJIT: Fix getconstant exits after opt_ltlt fusion by k0kubun · Pull Request #10903
• Add/revise Errno descriptions by BurdetteLamar · Pull Request #10897
• Bug #20522: YJIT can panic if shape transition in gen_setinstancevariable emits a performance warning
• [DOC] Exceptions doc by BurdetteLamar · Pull Request #10865
• Feature #20524: mswin and gmp
• [DOC] Doc for module Errno by BurdetteLamar · Pull Request #10913
• Feature #19998: Emit deprecation warnings when the old (non-Typed) Data_XXX API is used
• Bug #20521: Memory leak in Ripper parsing
• Bug #19749: Confirm correct behaviour when attaching private method with #define_method
• Bug #14480: miniruby crashing when compiled with -O2 or -O1 on aarch64
• Bundle rbs-3.5 by soutaro · Pull Request #10929
• Bug #20397: The nkf license in LEGAL file seems to be obsolete
• Bug #20518: Escaped-newline in %W
• YJIT: implement variable-length context encoding scheme by maximecb · Pull Request #10888
• YJIT: implement cache for recently encoded/decoded contexts by maximecb · Pull Request #10938
• Bug #20566: string << 0xC2 should raise a RangeError if the string encoding is Encoding::ASCII
• Bug #20569: Instruction sequence generated from shareable_constant_value: literal files may not be serialized to binary
• Bug #20154: aarch64: configure overrides -mbranch-protection if it was set in CFLAGS via environment
• Bug #20573: Warning.warn shouldn't be called for disabled warnings
• Bug #20562: Categorize RUBY_FREE_AT_EXIT warning
• Bug #20572: Compilation hangs with nested until
• YJIT: add context cache hits stat by maximecb · Pull Request #10979
• Bug #20577: FREE_AT_EXIT segfaulting after 32683aa1
• RJIT: Fixed and/or reg+disp32 operations by ukolovda · Pull Request #10856
• Bug #20578: Tokenizing string literal that have newline and invalid escape is wrong
• Fixed indents in recently RJIT patch by ukolovda · Pull Request #11001
• Enable LeakChecker for RJIT previously disabled for MJIT by XrXr · Pull Request #10998
• Bug #20579: Ripper.tokenize("1\n ") does not include trailing spaces
• Bug #20585: Size of memory allocated by String.new(:capacity) is different from the specified value
• Bug #20592: Interrupting Addrinfo causes Segmentation fault on alpine
• Bug #20043: defined? checks for method existence but only sometimes
• Bug #20457: Final return is eliminated from the AST
• Test rbs-gem with unreleased version by soutaro · Pull Request #11060
• Use File.open instead of IO.sysopen (backport to 3.5) by soutaro · Pull Request #11061
• [DOC] Doc for exceptions by BurdetteLamar · Pull Request #11008
• Bug #20595: Corruption of encoding name string
• Bug #20598: Corruption of internal encoding string
• Fix comment for VM_CALL_ARGS_SIMPLE by Gadiguibou · Pull Request #11067
• Synchronize Bundler & RubyGems by deivid-rodriguez · Pull Request #11071
• YJIT: Use a special breakpoint address if one isn't explicitly supplied in order to support natural line stepping. by nirvdrum · Pull Request #11083
• Speed up chunkypng benchmark by tenderlove · Pull Request #11087
• Feature #20470: Extract Ruby's Garbage Collector
• Feature #20589: Resize array in rb_ary_freeze and use rb_ary_freeze internally for arrays
• [DOC] Doc for Integer#floor by BurdetteLamar · Pull Request #11077
• Use __CET__ macro to enable IBT support. by voxik · Pull Request #11081
• Bug #20606: Thread#thread_variable_get, Thread#thread_variable? and Thread#[] methods handle non-String/Symbol parameter values differently
• Bug #20601: Configuration flags are not properly propagated to assembler
• Bug #18061: Execshield test: libruby.so.N.N.N: FAIL: property-note test because no .note.gnu.property section found
• Feature #19236: Allow to create hashes with a specific capacity from Ruby
• [DOC] Doc for Float#ceil by BurdetteLamar · Pull Request #11125
• YJIT: add comments and assertions to context cache code by maximecb · Pull Request #10983
• Bug #20593: Kernel#format emits a too many arguments for format string warning when called with a single hash and no key is used
• IBM864 single-byte transcoding by jeremy · Pull Request #10518
• Update yjit.md, explain how to run a single test with test-all by maximecb · Pull Request #11151
• YJIT: increase context cache size to 1024 redux by maximecb · Pull Request #11140
• YJIT: remove doc/yjit/yjit_hacking.md by maximecb · Pull Request #11153
• Feature #20443: Allow Major GC's to be disabled
• Bug #20633: compile error at vm_insnhelper.c when HAVE_DECL_ATOMIC_SIGNAL_FENCE is 0
• YJIT: Local variable register allocation by k0kubun · Pull Request #11157
• YJIT: split chain_depth and flag booleans in context by maximecb · Pull Request #11169
• Feature #20576: Add MatchData#bytebegin and MatchData#byteend
• Bug #20587: dir.c calls blocking filesystem APIs/system calls while holding the GVL
• Feature #18776: Object Shapes
• Bugfix - Typos in comments by jutaz · Pull Request #1140
• YJIT: Allow dev_nodebug to disasm release-mode code by k0kubun · Pull Request #11198
• Bug #20632: madvise(MADV_FREE) failure should not crash the process
• Remove redundant :use_block with yield by k0kubun · Pull Request #11203
• Bug #20641: lib/bundled_gems.rb makes Kernel.require over 100x slower
• Feature #20624: Enhance RubyVM::AbstractSyntaxTree::Node#locations method and RubyVM::AbstractSyntaxTree::Location class
• [DOC] Doc for BasicObject by BurdetteLamar · Pull Request #11139
• Bug #20647: Invalid return in class/module body from within singleton class
• Bug #20649: Ripper fails to tokenize def f; (x)::A =
• Bug #20650: Memory leak in Regexp capture group when timeout
• Bug #20653: Memory leak in String#start_with? when regexp times out
• [DOC] rb_ary_s_create by BurdetteLamar · Pull Request #11256
• Feature #20646: Improve Socket.tcp
• Bug #20655: Calling continuation triggers ensure function of rb_ensure
• Bug #20654: Floor and ceil have unexpected behaviour when ndigits is large
• [DOC] Tweaks for Array.new by BurdetteLamar · Pull Request #11259
• [DOC] Tweaks to Array.try_convert by BurdetteLamar · Pull Request #11260
• Feature #20563: Drop support for old Windows
• YJIT: Decouple Context from encoding details by k0kubun · Pull Request #11283
• [DOC] Adds "Further Considerations" to documentation_guide.md by BurdetteLamar · Pull Request #11281
• YJIT: Enhance the String#<< method substitution to handle integer codepoint values. by nirvdrum · Pull Request #11032
• [DOC] Tweaks to Array#+ by BurdetteLamar · Pull Request #11302
• [DOC] Tweaks to Array#- by BurdetteLamar · Pull Request #11303
• Make YJIT a GC root rather than an object by peterzhu2118 · Pull Request #11343
• Sync rdoc to fix master doc's display issue by st0012 · Pull Request #11345
• [DOC] Tweaks for Array#[]= by BurdetteLamar · Pull Request #11329
• YJIT: Allow tracing fallback counters by k0kubun · Pull Request #11347
• Bug #20668: [3.3] shareable_constant_value: literal crash
• Bug #20344: argument stack underflow (-1)
• [DOC] Tweaks to Array#all? by BurdetteLamar · Pull Request #11365
• Improve base time of assert_linear_performance by tompng · Pull Request #11369
• [DOC] Tweaks to Array#assoc by BurdetteLamar · Pull Request #11384
• Feature #18368: Range#step semantics for non-Numeric ranges
• Bug #20679: Rails CI errors since abc04e898b627ab37fa9dd5e330f239768778d8b
• Decrease the timeout in assert_darwin_vm_dump_works by ono-max · Pull Request #11412
• Bug #20687: Does tarball require baseruby?
• [DOC] Include keywords.rdoc in doc/syntax/ by BurdetteLamar · Pull Request #11414
• Bug #20677: error: mach-o section specifier requires a segment whose length is between 1 and 16 characters
• Bug #20688: Use-after-free in WeakMap and WeakKeyMap
• [DOC] Tweaks for Array#collect! by BurdetteLamar · Pull Request #11434
• Bug #20691: Use-after-free in WeakKeyMap#clear
• Bug #20680: No "void context" warning for literals/etc. in ensure block
• [DOC] Tweaks to Array#combination by BurdetteLamar · Pull Request #11440
• Bug #20701: Hash argument passed as keyword splat can be mutated inside method
• [DOC] Tweaks for Array#cycle by BurdetteLamar · Pull Request #11459
• YJIT: Pass method arguments using registers by k0kubun · Pull Request #11280
• YJIT: Encode doubles to VALUE objects and move stat generation to rust by rwstauner · Pull Request #11388
• [DOC] Array comparing doc by BurdetteLamar · Pull Request #11486
• Bug #20704: Windows: -C option does not work for multibyte path name
• [DOC] Relateds for combo methods by BurdetteLamar · Pull Request #11483
• [DOC] Related for Array#all? and Array#any? by BurdetteLamar · Pull Request #11495
• [DOC] Related for Array#[] by BurdetteLamar · Pull Request #11487
• Bug #20695: Elevated GC allocations in parse.y parser
• Bug #20708: EINTR while opening fifo isn't retried
• Feature #20590: Ensure fork isn't called when raddrinfo's background thread is in getaddrinfo
• Feature #20684: Add optimized instructions for frozen literal Hash and Array
• Issue #11865, lib/csv.rb Added attribute @line. by donilan · Pull Request #1170
• Feature #20707: Move Time#xmlschema into core
• YJIT: Speed up block_assumptions_free by k0kubun · Pull Request #11556
• Feature #20702: Add Array#fetch_values
• Bug #20718: Objects created with Data_Make_Struct and the default free function are not freed
• Bug #20719: Float converts ASCII-incompatible string
• Feature #20594: A new String method to append bytes while preserving encoding
• Bug #20710: Reducing Hash allocation introduces large performance degradation (probably related to VWA)
• [DOC] Rationalize aliases in "What's Here" by BurdetteLamar · Pull Request #11516
• [DOC] Rationalize aliases in "What's Here" by BurdetteLamar · Pull Request #11517
• [DOC] Tweaks for Array#difference by BurdetteLamar · Pull Request #11593
• Bug #20720: prism incorrectly marks SuperNode as forwarding in some cases
• Bug #20586: Some filesystem calls in dir.c are missing error handling and can return incorrect results if interrupted
• Feature #20564: Switch default parser to Prism
• [DOC] Tweaks for Array#fetch by BurdetteLamar · Pull Request #11602
• [DOC] Tweaks for Array#fetch_values by BurdetteLamar · Pull Request #11603
• Bug #20725: Inconsistent handling of doubly-unbounded ranges in Range#overlap?
• Bug #20732: prism emits "mismatched indentations" warning in eval
• Bug #20731: warning: mismatched indentations at 'when' appears with prism enabled ruby
• Bug #20730: LoadError if Rakefile has shebang
• Bug #20735: prism emits "ambiguous &" warning
• Bug #20748: Issue with defined? given method call with block in prism compiler
• Bug #20741: RubyVM::InstructionSequence.compile emits a wrong warning (prism?)
• Bug #20744: syntax error found (SyntaxError) UTF-8 mixed within US-ASCII source reported Ruby with Prism parser
• Bug #20747: [prism] regression in retry precedence
• Bug #20723: IO#close is broken on Ruby 3.3+ when using the Fiber scheduler.
• Bug #20736: prism emits wrong warnings in syntax-error code
• YJIT: Accept key for runtime_stats to return only that stat by rwstauner · Pull Request #11536
• Bug #20754: [doc] Hash::new is missing from rdoc for 3.4
• Bug #20740: prism_compile coding issue for PM_FORWARDING_SUPER_NODE
• Bug #20640: Evaluation Order Issue in f(**h, &h.delete(key))
• Bug #20597: eval('break if false') should raise SyntaxError but retuns nil
• Bug #20607: Exception messages are inconsistent when thread-local variables are accessed
• Bug #20716: Different instance_method behavior in Ruby 2.7 and Ruby 3.x
• Bug #18651: oob access in CP51932 -> CP50220 transcoder
• Bug #20337: Complex#inspect mutates the string returned by real.inspect
• [DOC] More on Array#fill by BurdetteLamar · Pull Request #11610
• Bug #13831: error when try to install
• YJIT: Cache Context decoding by k0kubun · Pull Request #11680
• [DOC] Tweaks for Array#find_index by BurdetteLamar · Pull Request #11686
• Bug #20763: Stack consistency error with bare endless range
• [DOC] Tweaks for Array#flatten by BurdetteLamar · Pull Request #11688
• Bug #10555: '?' is not match to multibyte character at commandline globbing on Windows
• [DOC] Tweaks for Array#insert by BurdetteLamar · Pull Request #11709
• [DOC] Tweaks for Array#flatten! by BurdetteLamar · Pull Request #11689
• [DOC] Tweaks for Array#first by BurdetteLamar · Pull Request #11687
• [DOC] Tweaks for Array#hash by BurdetteLamar · Pull Request #11704
• Bug #20773: CI of RHEL8 and Amazon Linux 2 are failed from Sep 26th
• Bug #20752: IO::Buffer#slice creates mutable IO::Buffer instance that points to readonly memory (e.g. fronzen String)
• Bug #20501: ruby SEGV
• Return an Iterator Instead of a Vector in addrs_to_pages Method by whtsht · Pull Request #11725
• Bug #20755: IO::Buffer#transfer transfers mutable reference to String's memory but not lock ownership
• Bug #20764: Forwarding parameter ... is wrongly allowed in lambda
• [DOC] Tweaks for Array#inspect by BurdetteLamar · Pull Request #11743
• [DOC] Tweaks for Array#last by BurdetteLamar · Pull Request #11748
• [DOC] Tweaks for Array#intersection by BurdetteLamar · Pull Request #11745
• [DOC] Tweaks for Array.intersect? by BurdetteLamar · Pull Request #11744
• [DOC] Tweaks for Array#max by BurdetteLamar · Pull Request #11768
• Update IO::Buffer documentation. by ioquatix · Pull Request #11737
• Add IO::Buffer tests for read and write with length & offset. by ioquatix · Pull Request #11779
• Bug #20620: singleton_method undefined for module using "extend self"
• [DOC] Tweaks for Array#min by BurdetteLamar · Pull Request #11786
• Improve documentation for IO#timeout and related functions. by ioquatix · Pull Request #9527
• Better handling of timeout in rb_io_maybe_wait_*. by ioquatix · Pull Request #9531
• Update io_spec.c to use rb_io_maybe_wait* if possible. by ioquatix · Pull Request #11792
• Direct access to fptr->fd should prefer to use the internal/io.h. by ioquatix · Pull Request #11793
• Bug #20783: --enable-shared and the rpath/runpath are broken on Linux on CRuby master
• [DOC] Tweaks for Array#minmax by BurdetteLamar · Pull Request #11787
• [DOC] Tweaks for Array#one? by BurdetteLamar · Pull Request #11789
• [DOC] Tweaks for Array#none? by BurdetteLamar · Pull Request #11788
• Introduce rb_io_blocking_region which takes struct rb_io argument. by ioquatix · Pull Request #11795
• Bug #20784: ?\ followed by EOF is parsed wrong
• Feature #20705: Should "0.E-9" be a valid float value?
• Bug #20433: Hash.inspect for some hash returns syntax invalid representation
• Bug #20787: IO#readline does not check its arguments like IO#gets and will read more data than limit

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_preview1...v3_4_0_preview2