What's Changed

• Bug #21629: Ruby-3.4.7 prints -Wdefault-const-init-field-unsafe warnings on clang / llvm 21 - Ruby - Ruby Issue Tracking System
• Bug #21626: Backport WASI setjmp handler memory leak fixes - Ruby - Ruby Issue Tracking System
• Bug #21631: Backport openssl gem bugfix releases - Ruby - Ruby Issue Tracking System
• Bug #21632: Backport REXML CVE-2025-58767 fix - Ruby - Ruby Issue Tracking System
• Bug #21644: Stack consistency error for the newrange INSN peephole optimization with chilled string - Ruby - Ruby Issue Tracking System
• Bug #21668: Improve performance of UnicodeNormalize.canonical_ordering_one - Ruby - Ruby Issue Tracking System
• Bug #21638: Ractor-local $DEBUG is not marked - Ruby - Ruby Issue Tracking System
• Bug #21652: Marshal#dump documentation out-of-date/unclear regarding Data class - Ruby - Ruby Issue Tracking System
• Bug #13671: Regexp with lookbehind and case-insensitivity raises RegexpError only on strings with certain characters - Ruby - Ruby Issue Tracking System
• Bug #21625: Allow IO#wait_readable together with IO#ungetc even in text mode - Ruby - Ruby Issue Tracking System
• Bug #21671: Rails CI raises Assertion Failed: rbimpl_rstring_getmem:RB_TYPE_P(str, RUBY_T_STRING): actual type: 26 with "-DENABLE_PATH_CHECK=0 -DRUBY_DEBUG=1" enabled - Ruby - Ruby Issue Tracking System
• Update next stable version to 4.0 from 3.5 by hsbt · Pull Request #15146
• Bug #21679: Segfault when ruby calls pthread_detach in rb_getnameinfo - Ruby - Ruby Issue Tracking System
• Bug #21694: Crash when looking up super method from BasicObject - Ruby - Ruby Issue Tracking System
• Bug #21707: Destructuring assignment of SimpleDelegator wrapped array bug with YJIT - Ruby - Ruby Issue Tracking System
• Bug #21265: Crash when proc from Symbol#to_proc called outside refinement scope - Ruby - Ruby Issue Tracking System
• Bug #21703: RUBY_CRASH_REPORT does not work when shelling out in some cases - Ruby - Ruby Issue Tracking System
• Bug #21666: Math.lgamma(-1).should == [infinity_value, 1] fails with Fedora glibc-2.42.9000-8.fc44 - Ruby - Ruby Issue Tracking System
• Bug #21655: segfault when building 3.3.10 with GCC 15.2.1, regression from 3.3.9 - Ruby - Ruby Issue Tracking System
• Bug #21680: Integer#digits bug starting from Ruby 3.1 - Ruby - Ruby Issue Tracking System
• Bug #21705: UNIXServer.open(nil) segfaults on Windows - Ruby - Ruby Issue Tracking System
• Bug #21648: [prism] ruby crashes for for * in [10]; end - Ruby - Ruby Issue Tracking System
• Bug #21187: Strings concatenated with \ getting frozen with literal hashes (PRISM only) - Ruby - Ruby Issue Tracking System
• Bug #21757: Splatted args array is mutated when passing unexpected kwargs - Ruby - Ruby Issue Tracking System
• Bug #21772: ruby: YJIT has panicked StackOpnd(1) should be a heap object, but was ImmSymbol for VALUE(137647867319760) - Ruby - Ruby Issue Tracking System
• Bug #21446: StackOverflow when changing visibility in reopened refinement - Ruby - Ruby Issue Tracking System
• Bug #21779: Do not export functions from statically linked extensions - Ruby - Ruby Issue Tracking System
• Bug #21266: YJIT GC safety crash with proc objects as block argument - 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

https://github.com/ruby/ruby/compare/v3_4_7...v3_4_8